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+/**
+ * @license AngularJS v1.3.20
+ * (c) 2010-2014 Google, Inc. http://angularjs.org
+ * License: MIT
+ */
+(function(window, document, undefined) {'use strict';
+
+/**
+ * @description
+ *
+ * This object provides a utility for producing rich Error messages within
+ * Angular. It can be called as follows:
+ *
+ * var exampleMinErr = minErr('example');
+ * throw exampleMinErr('one', 'This {0} is {1}', foo, bar);
+ *
+ * The above creates an instance of minErr in the example namespace. The
+ * resulting error will have a namespaced error code of example.one.  The
+ * resulting error will replace {0} with the value of foo, and {1} with the
+ * value of bar. The object is not restricted in the number of arguments it can
+ * take.
+ *
+ * If fewer arguments are specified than necessary for interpolation, the extra
+ * interpolation markers will be preserved in the final string.
+ *
+ * Since data will be parsed statically during a build step, some restrictions
+ * are applied with respect to how minErr instances are created and called.
+ * Instances should have names of the form namespaceMinErr for a minErr created
+ * using minErr('namespace') . Error codes, namespaces and template strings
+ * should all be static strings, not variables or general expressions.
+ *
+ * @param {string} module The namespace to use for the new minErr instance.
+ * @param {function} ErrorConstructor Custom error constructor to be instantiated when returning
+ *   error from returned function, for cases when a particular type of error is useful.
+ * @returns {function(code:string, template:string, ...templateArgs): Error} minErr instance
+ */
+
+function minErr(module, ErrorConstructor) {
+  ErrorConstructor = ErrorConstructor || Error;
+  return function() {
+    var code = arguments[0],
+      prefix = '[' + (module ? module + ':' : '') + code + '] ',
+      template = arguments[1],
+      templateArgs = arguments,
+
+      message, i;
+
+    message = prefix + template.replace(/\{\d+\}/g, function(match) {
+      var index = +match.slice(1, -1), arg;
+
+      if (index + 2 < templateArgs.length) {
+        return toDebugString(templateArgs[index + 2]);
+      }
+      return match;
+    });
+
+    message = message + '\nhttp://errors.angularjs.org/1.3.20/' +
+      (module ? module + '/' : '') + code;
+    for (i = 2; i < arguments.length; i++) {
+      message = message + (i == 2 ? '?' : '&') + 'p' + (i - 2) + '=' +
+        encodeURIComponent(toDebugString(arguments[i]));
+    }
+    return new ErrorConstructor(message);
+  };
+}
+
+/* We need to tell jshint what variables are being exported */
+/* global angular: true,
+  msie: true,
+  jqLite: true,
+  jQuery: true,
+  slice: true,
+  splice: true,
+  push: true,
+  toString: true,
+  ngMinErr: true,
+  angularModule: true,
+  uid: true,
+  REGEX_STRING_REGEXP: true,
+  VALIDITY_STATE_PROPERTY: true,
+
+  lowercase: true,
+  uppercase: true,
+  manualLowercase: true,
+  manualUppercase: true,
+  nodeName_: true,
+  isArrayLike: true,
+  forEach: true,
+  sortedKeys: true,
+  forEachSorted: true,
+  reverseParams: true,
+  nextUid: true,
+  setHashKey: true,
+  extend: true,
+  int: true,
+  inherit: true,
+  noop: true,
+  identity: true,
+  valueFn: true,
+  isUndefined: true,
+  isDefined: true,
+  isObject: true,
+  isString: true,
+  isNumber: true,
+  isDate: true,
+  isArray: true,
+  isFunction: true,
+  isRegExp: true,
+  isWindow: true,
+  isScope: true,
+  isFile: true,
+  isFormData: true,
+  isBlob: true,
+  isBoolean: true,
+  isPromiseLike: true,
+  trim: true,
+  escapeForRegexp: true,
+  isElement: true,
+  makeMap: true,
+  includes: true,
+  arrayRemove: true,
+  copy: true,
+  shallowCopy: true,
+  equals: true,
+  csp: true,
+  concat: true,
+  sliceArgs: true,
+  bind: true,
+  toJsonReplacer: true,
+  toJson: true,
+  fromJson: true,
+  startingTag: true,
+  tryDecodeURIComponent: true,
+  parseKeyValue: true,
+  toKeyValue: true,
+  encodeUriSegment: true,
+  encodeUriQuery: true,
+  angularInit: true,
+  bootstrap: true,
+  getTestability: true,
+  snake_case: true,
+  bindJQuery: true,
+  assertArg: true,
+  assertArgFn: true,
+  assertNotHasOwnProperty: true,
+  getter: true,
+  getBlockNodes: true,
+  hasOwnProperty: true,
+  createMap: true,
+
+  NODE_TYPE_ELEMENT: true,
+  NODE_TYPE_ATTRIBUTE: true,
+  NODE_TYPE_TEXT: true,
+  NODE_TYPE_COMMENT: true,
+  NODE_TYPE_DOCUMENT: true,
+  NODE_TYPE_DOCUMENT_FRAGMENT: true,
+*/
+
+////////////////////////////////////
+
+/**
+ * @ngdoc module
+ * @name ng
+ * @module ng
+ * @description
+ *
+ * # ng (core module)
+ * The ng module is loaded by default when an AngularJS application is started. The module itself
+ * contains the essential components for an AngularJS application to function. The table below
+ * lists a high level breakdown of each of the services/factories, filters, directives and testing
+ * components available within this core module.
+ *
+ * <div doc-module-components="ng"></div>
+ */
+
+var REGEX_STRING_REGEXP = /^\/(.+)\/([a-z]*)$/;
+
+// The name of a form control's ValidityState property.
+// This is used so that it's possible for internal tests to create mock ValidityStates.
+var VALIDITY_STATE_PROPERTY = 'validity';
+
+/**
+ * @ngdoc function
+ * @name angular.lowercase
+ * @module ng
+ * @kind function
+ *
+ * @description Converts the specified string to lowercase.
+ * @param {string} string String to be converted to lowercase.
+ * @returns {string} Lowercased string.
+ */
+var lowercase = function(string) {return isString(string) ? string.toLowerCase() : string;};
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+
+/**
+ * @ngdoc function
+ * @name angular.uppercase
+ * @module ng
+ * @kind function
+ *
+ * @description Converts the specified string to uppercase.
+ * @param {string} string String to be converted to uppercase.
+ * @returns {string} Uppercased string.
+ */
+var uppercase = function(string) {return isString(string) ? string.toUpperCase() : string;};
+
+
+var manualLowercase = function(s) {
+  /* jshint bitwise: false */
+  return isString(s)
+      ? s.replace(/[A-Z]/g, function(ch) {return String.fromCharCode(ch.charCodeAt(0) | 32);})
+      : s;
+};
+var manualUppercase = function(s) {
+  /* jshint bitwise: false */
+  return isString(s)
+      ? s.replace(/[a-z]/g, function(ch) {return String.fromCharCode(ch.charCodeAt(0) & ~32);})
+      : s;
+};
+
+
+// String#toLowerCase and String#toUpperCase don't produce correct results in browsers with Turkish
+// locale, for this reason we need to detect this case and redefine lowercase/uppercase methods
+// with correct but slower alternatives.
+if ('i' !== 'I'.toLowerCase()) {
+  lowercase = manualLowercase;
+  uppercase = manualUppercase;
+}
+
+
+var
+    msie,             // holds major version number for IE, or NaN if UA is not IE.
+    jqLite,           // delay binding since jQuery could be loaded after us.
+    jQuery,           // delay binding
+    slice             = [].slice,
+    splice            = [].splice,
+    push              = [].push,
+    toString          = Object.prototype.toString,
+    ngMinErr          = minErr('ng'),
+
+    /** @name angular */
+    angular           = window.angular || (window.angular = {}),
+    angularModule,
+    uid               = 0;
+
+/**
+ * documentMode is an IE-only property
+ * http://msdn.microsoft.com/en-us/library/ie/cc196988(v=vs.85).aspx
+ */
+msie = document.documentMode;
+
+
+/**
+ * @private
+ * @param {*} obj
+ * @return {boolean} Returns true if `obj` is an array or array-like object (NodeList, Arguments,
+ *                   String ...)
+ */
+function isArrayLike(obj) {
+  if (obj == null || isWindow(obj)) {
+    return false;
+  }
+
+  // Support: iOS 8.2 (not reproducible in simulator)
+  // "length" in obj used to prevent JIT error (gh-11508)
+  var length = "length" in Object(obj) && obj.length;
+
+  if (obj.nodeType === NODE_TYPE_ELEMENT && length) {
+    return true;
+  }
+
+  return isString(obj) || isArray(obj) || length === 0 ||
+         typeof length === 'number' && length > 0 && (length - 1) in obj;
+}
+
+/**
+ * @ngdoc function
+ * @name angular.forEach
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Invokes the `iterator` function once for each item in `obj` collection, which can be either an
+ * object or an array. The `iterator` function is invoked with `iterator(value, key, obj)`, where `value`
+ * is the value of an object property or an array element, `key` is the object property key or
+ * array element index and obj is the `obj` itself. Specifying a `context` for the function is optional.
+ *
+ * It is worth noting that `.forEach` does not iterate over inherited properties because it filters
+ * using the `hasOwnProperty` method.
+ *
+ * Unlike ES262's
+ * [Array.prototype.forEach](http://www.ecma-international.org/ecma-262/5.1/#sec-15.4.4.18),
+ * Providing 'undefined' or 'null' values for `obj` will not throw a TypeError, but rather just
+ * return the value provided.
+ *
+   ```js
+     var values = {name: 'misko', gender: 'male'};
+     var log = [];
+     angular.forEach(values, function(value, key) {
+       this.push(key + ': ' + value);
+     }, log);
+     expect(log).toEqual(['name: misko', 'gender: male']);
+   ```
+ *
+ * @param {Object|Array} obj Object to iterate over.
+ * @param {Function} iterator Iterator function.
+ * @param {Object=} context Object to become context (`this`) for the iterator function.
+ * @returns {Object|Array} Reference to `obj`.
+ */
+
+function forEach(obj, iterator, context) {
+  var key, length;
+  if (obj) {
+    if (isFunction(obj)) {
+      for (key in obj) {
+        // Need to check if hasOwnProperty exists,
+        // as on IE8 the result of querySelectorAll is an object without a hasOwnProperty function
+        if (key != 'prototype' && key != 'length' && key != 'name' && (!obj.hasOwnProperty || obj.hasOwnProperty(key))) {
+          iterator.call(context, obj[key], key, obj);
+        }
+      }
+    } else if (isArray(obj) || isArrayLike(obj)) {
+      var isPrimitive = typeof obj !== 'object';
+      for (key = 0, length = obj.length; key < length; key++) {
+        if (isPrimitive || key in obj) {
+          iterator.call(context, obj[key], key, obj);
+        }
+      }
+    } else if (obj.forEach && obj.forEach !== forEach) {
+        obj.forEach(iterator, context, obj);
+    } else {
+      for (key in obj) {
+        if (obj.hasOwnProperty(key)) {
+          iterator.call(context, obj[key], key, obj);
+        }
+      }
+    }
+  }
+  return obj;
+}
+
+function sortedKeys(obj) {
+  return Object.keys(obj).sort();
+}
+
+function forEachSorted(obj, iterator, context) {
+  var keys = sortedKeys(obj);
+  for (var i = 0; i < keys.length; i++) {
+    iterator.call(context, obj[keys[i]], keys[i]);
+  }
+  return keys;
+}
+
+
+/**
+ * when using forEach the params are value, key, but it is often useful to have key, value.
+ * @param {function(string, *)} iteratorFn
+ * @returns {function(*, string)}
+ */
+function reverseParams(iteratorFn) {
+  return function(value, key) { iteratorFn(key, value); };
+}
+
+/**
+ * A consistent way of creating unique IDs in angular.
+ *
+ * Using simple numbers allows us to generate 28.6 million unique ids per second for 10 years before
+ * we hit number precision issues in JavaScript.
+ *
+ * Math.pow(2,53) / 60 / 60 / 24 / 365 / 10 = 28.6M
+ *
+ * @returns {number} an unique alpha-numeric string
+ */
+function nextUid() {
+  return ++uid;
+}
+
+
+/**
+ * Set or clear the hashkey for an object.
+ * @param obj object
+ * @param h the hashkey (!truthy to delete the hashkey)
+ */
+function setHashKey(obj, h) {
+  if (h) {
+    obj.$$hashKey = h;
+  } else {
+    delete obj.$$hashKey;
+  }
+}
+
+/**
+ * @ngdoc function
+ * @name angular.extend
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Extends the destination object `dst` by copying own enumerable properties from the `src` object(s)
+ * to `dst`. You can specify multiple `src` objects. If you want to preserve original objects, you can do so
+ * by passing an empty object as the target: `var object = angular.extend({}, object1, object2)`.
+ * Note: Keep in mind that `angular.extend` does not support recursive merge (deep copy).
+ *
+ * @param {Object} dst Destination object.
+ * @param {...Object} src Source object(s).
+ * @returns {Object} Reference to `dst`.
+ */
+function extend(dst) {
+  var h = dst.$$hashKey;
+
+  for (var i = 1, ii = arguments.length; i < ii; i++) {
+    var obj = arguments[i];
+    if (obj) {
+      var keys = Object.keys(obj);
+      for (var j = 0, jj = keys.length; j < jj; j++) {
+        var key = keys[j];
+        dst[key] = obj[key];
+      }
+    }
+  }
+
+  setHashKey(dst, h);
+  return dst;
+}
+
+function int(str) {
+  return parseInt(str, 10);
+}
+
+
+function inherit(parent, extra) {
+  return extend(Object.create(parent), extra);
+}
+
+/**
+ * @ngdoc function
+ * @name angular.noop
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * A function that performs no operations. This function can be useful when writing code in the
+ * functional style.
+   ```js
+     function foo(callback) {
+       var result = calculateResult();
+       (callback || angular.noop)(result);
+     }
+   ```
+ */
+function noop() {}
+noop.$inject = [];
+
+
+/**
+ * @ngdoc function
+ * @name angular.identity
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * A function that returns its first argument. This function is useful when writing code in the
+ * functional style.
+ *
+   ```js
+     function transformer(transformationFn, value) {
+       return (transformationFn || angular.identity)(value);
+     };
+   ```
+  * @param {*} value to be returned.
+  * @returns {*} the value passed in.
+ */
+function identity($) {return $;}
+identity.$inject = [];
+
+
+function valueFn(value) {return function() {return value;};}
+
+/**
+ * @ngdoc function
+ * @name angular.isUndefined
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Determines if a reference is undefined.
+ *
+ * @param {*} value Reference to check.
+ * @returns {boolean} True if `value` is undefined.
+ */
+function isUndefined(value) {return typeof value === 'undefined';}
+
+
+/**
+ * @ngdoc function
+ * @name angular.isDefined
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Determines if a reference is defined.
+ *
+ * @param {*} value Reference to check.
+ * @returns {boolean} True if `value` is defined.
+ */
+function isDefined(value) {return typeof value !== 'undefined';}
+
+
+/**
+ * @ngdoc function
+ * @name angular.isObject
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Determines if a reference is an `Object`. Unlike `typeof` in JavaScript, `null`s are not
+ * considered to be objects. Note that JavaScript arrays are objects.
+ *
+ * @param {*} value Reference to check.
+ * @returns {boolean} True if `value` is an `Object` but not `null`.
+ */
+function isObject(value) {
+  // http://jsperf.com/isobject4
+  return value !== null && typeof value === 'object';
+}
+
+
+/**
+ * @ngdoc function
+ * @name angular.isString
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Determines if a reference is a `String`.
+ *
+ * @param {*} value Reference to check.
+ * @returns {boolean} True if `value` is a `String`.
+ */
+function isString(value) {return typeof value === 'string';}
+
+
+/**
+ * @ngdoc function
+ * @name angular.isNumber
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Determines if a reference is a `Number`.
+ *
+ * This includes the "special" numbers `NaN`, `+Infinity` and `-Infinity`.
+ *
+ * If you wish to exclude these then you can use the native
+ * [`isFinite'](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/isFinite)
+ * method.
+ *
+ * @param {*} value Reference to check.
+ * @returns {boolean} True if `value` is a `Number`.
+ */
+function isNumber(value) {return typeof value === 'number';}
+
+
+/**
+ * @ngdoc function
+ * @name angular.isDate
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Determines if a value is a date.
+ *
+ * @param {*} value Reference to check.
+ * @returns {boolean} True if `value` is a `Date`.
+ */
+function isDate(value) {
+  return toString.call(value) === '[object Date]';
+}
+
+
+/**
+ * @ngdoc function
+ * @name angular.isArray
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Determines if a reference is an `Array`.
+ *
+ * @param {*} value Reference to check.
+ * @returns {boolean} True if `value` is an `Array`.
+ */
+var isArray = Array.isArray;
+
+/**
+ * @ngdoc function
+ * @name angular.isFunction
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Determines if a reference is a `Function`.
+ *
+ * @param {*} value Reference to check.
+ * @returns {boolean} True if `value` is a `Function`.
+ */
+function isFunction(value) {return typeof value === 'function';}
+
+
+/**
+ * Determines if a value is a regular expression object.
+ *
+ * @private
+ * @param {*} value Reference to check.
+ * @returns {boolean} True if `value` is a `RegExp`.
+ */
+function isRegExp(value) {
+  return toString.call(value) === '[object RegExp]';
+}
+
+
+/**
+ * Checks if `obj` is a window object.
+ *
+ * @private
+ * @param {*} obj Object to check
+ * @returns {boolean} True if `obj` is a window obj.
+ */
+function isWindow(obj) {
+  return obj && obj.window === obj;
+}
+
+
+function isScope(obj) {
+  return obj && obj.$evalAsync && obj.$watch;
+}
+
+
+function isFile(obj) {
+  return toString.call(obj) === '[object File]';
+}
+
+
+function isFormData(obj) {
+  return toString.call(obj) === '[object FormData]';
+}
+
+
+function isBlob(obj) {
+  return toString.call(obj) === '[object Blob]';
+}
+
+
+function isBoolean(value) {
+  return typeof value === 'boolean';
+}
+
+
+function isPromiseLike(obj) {
+  return obj && isFunction(obj.then);
+}
+
+
+var trim = function(value) {
+  return isString(value) ? value.trim() : value;
+};
+
+// Copied from:
+// http://docs.closure-library.googlecode.com/git/local_closure_goog_string_string.js.source.html#line1021
+// Prereq: s is a string.
+var escapeForRegexp = function(s) {
+  return s.replace(/([-()\[\]{}+?*.$\^|,:#<!\\])/g, '\\$1').
+           replace(/\x08/g, '\\x08');
+};
+
+
+/**
+ * @ngdoc function
+ * @name angular.isElement
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Determines if a reference is a DOM element (or wrapped jQuery element).
+ *
+ * @param {*} value Reference to check.
+ * @returns {boolean} True if `value` is a DOM element (or wrapped jQuery element).
+ */
+function isElement(node) {
+  return !!(node &&
+    (node.nodeName  // we are a direct element
+    || (node.prop && node.attr && node.find)));  // we have an on and find method part of jQuery API
+}
+
+/**
+ * @param str 'key1,key2,...'
+ * @returns {object} in the form of {key1:true, key2:true, ...}
+ */
+function makeMap(str) {
+  var obj = {}, items = str.split(","), i;
+  for (i = 0; i < items.length; i++)
+    obj[items[i]] = true;
+  return obj;
+}
+
+
+function nodeName_(element) {
+  return lowercase(element.nodeName || (element[0] && element[0].nodeName));
+}
+
+function includes(array, obj) {
+  return Array.prototype.indexOf.call(array, obj) != -1;
+}
+
+function arrayRemove(array, value) {
+  var index = array.indexOf(value);
+  if (index >= 0)
+    array.splice(index, 1);
+  return value;
+}
+
+/**
+ * @ngdoc function
+ * @name angular.copy
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Creates a deep copy of `source`, which should be an object or an array.
+ *
+ * * If no destination is supplied, a copy of the object or array is created.
+ * * If a destination is provided, all of its elements (for arrays) or properties (for objects)
+ *   are deleted and then all elements/properties from the source are copied to it.
+ * * If `source` is not an object or array (inc. `null` and `undefined`), `source` is returned.
+ * * If `source` is identical to 'destination' an exception will be thrown.
+ *
+ * @param {*} source The source that will be used to make a copy.
+ *                   Can be any type, including primitives, `null`, and `undefined`.
+ * @param {(Object|Array)=} destination Destination into which the source is copied. If
+ *     provided, must be of the same type as `source`.
+ * @returns {*} The copy or updated `destination`, if `destination` was specified.
+ *
+ * @example
+ <example module="copyExample">
+ <file name="index.html">
+ <div ng-controller="ExampleController">
+ <form novalidate class="simple-form">
+ Name: <input type="text" ng-model="user.name" /><br />
+ E-mail: <input type="email" ng-model="user.email" /><br />
+ Gender: <input type="radio" ng-model="user.gender" value="male" />male
+ <input type="radio" ng-model="user.gender" value="female" />female<br />
+ <button ng-click="reset()">RESET</button>
+ <button ng-click="update(user)">SAVE</button>
+ </form>
+ <pre>form = {{user | json}}</pre>
+ <pre>master = {{master | json}}</pre>
+ </div>
+
+ <script>
+  angular.module('copyExample', [])
+    .controller('ExampleController', ['$scope', function($scope) {
+      $scope.master= {};
+
+      $scope.update = function(user) {
+        // Example with 1 argument
+        $scope.master= angular.copy(user);
+      };
+
+      $scope.reset = function() {
+        // Example with 2 arguments
+        angular.copy($scope.master, $scope.user);
+      };
+
+      $scope.reset();
+    }]);
+ </script>
+ </file>
+ </example>
+ */
+function copy(source, destination, stackSource, stackDest) {
+  if (isWindow(source) || isScope(source)) {
+    throw ngMinErr('cpws',
+      "Can't copy! Making copies of Window or Scope instances is not supported.");
+  }
+
+  if (!destination) {
+    destination = source;
+    if (source) {
+      if (isArray(source)) {
+        destination = copy(source, [], stackSource, stackDest);
+      } else if (isDate(source)) {
+        destination = new Date(source.getTime());
+      } else if (isRegExp(source)) {
+        destination = new RegExp(source.source, source.toString().match(/[^\/]*$/)[0]);
+        destination.lastIndex = source.lastIndex;
+      } else if (isObject(source)) {
+        var emptyObject = Object.create(Object.getPrototypeOf(source));
+        destination = copy(source, emptyObject, stackSource, stackDest);
+      }
+    }
+  } else {
+    if (source === destination) throw ngMinErr('cpi',
+      "Can't copy! Source and destination are identical.");
+
+    stackSource = stackSource || [];
+    stackDest = stackDest || [];
+
+    if (isObject(source)) {
+      var index = stackSource.indexOf(source);
+      if (index !== -1) return stackDest[index];
+
+      stackSource.push(source);
+      stackDest.push(destination);
+    }
+
+    var result;
+    if (isArray(source)) {
+      destination.length = 0;
+      for (var i = 0; i < source.length; i++) {
+        result = copy(source[i], null, stackSource, stackDest);
+        if (isObject(source[i])) {
+          stackSource.push(source[i]);
+          stackDest.push(result);
+        }
+        destination.push(result);
+      }
+    } else {
+      var h = destination.$$hashKey;
+      if (isArray(destination)) {
+        destination.length = 0;
+      } else {
+        forEach(destination, function(value, key) {
+          delete destination[key];
+        });
+      }
+      for (var key in source) {
+        if (source.hasOwnProperty(key)) {
+          result = copy(source[key], null, stackSource, stackDest);
+          if (isObject(source[key])) {
+            stackSource.push(source[key]);
+            stackDest.push(result);
+          }
+          destination[key] = result;
+        }
+      }
+      setHashKey(destination,h);
+    }
+
+  }
+  return destination;
+}
+
+/**
+ * Creates a shallow copy of an object, an array or a primitive.
+ *
+ * Assumes that there are no proto properties for objects.
+ */
+function shallowCopy(src, dst) {
+  if (isArray(src)) {
+    dst = dst || [];
+
+    for (var i = 0, ii = src.length; i < ii; i++) {
+      dst[i] = src[i];
+    }
+  } else if (isObject(src)) {
+    dst = dst || {};
+
+    for (var key in src) {
+      if (!(key.charAt(0) === '$' && key.charAt(1) === '$')) {
+        dst[key] = src[key];
+      }
+    }
+  }
+
+  return dst || src;
+}
+
+
+/**
+ * @ngdoc function
+ * @name angular.equals
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Determines if two objects or two values are equivalent. Supports value types, regular
+ * expressions, arrays and objects.
+ *
+ * Two objects or values are considered equivalent if at least one of the following is true:
+ *
+ * * Both objects or values pass `===` comparison.
+ * * Both objects or values are of the same type and all of their properties are equal by
+ *   comparing them with `angular.equals`.
+ * * Both values are NaN. (In JavaScript, NaN == NaN => false. But we consider two NaN as equal)
+ * * Both values represent the same regular expression (In JavaScript,
+ *   /abc/ == /abc/ => false. But we consider two regular expressions as equal when their textual
+ *   representation matches).
+ *
+ * During a property comparison, properties of `function` type and properties with names
+ * that begin with `$` are ignored.
+ *
+ * Scope and DOMWindow objects are being compared only by identify (`===`).
+ *
+ * @param {*} o1 Object or value to compare.
+ * @param {*} o2 Object or value to compare.
+ * @returns {boolean} True if arguments are equal.
+ */
+function equals(o1, o2) {
+  if (o1 === o2) return true;
+  if (o1 === null || o2 === null) return false;
+  if (o1 !== o1 && o2 !== o2) return true; // NaN === NaN
+  var t1 = typeof o1, t2 = typeof o2, length, key, keySet;
+  if (t1 == t2) {
+    if (t1 == 'object') {
+      if (isArray(o1)) {
+        if (!isArray(o2)) return false;
+        if ((length = o1.length) == o2.length) {
+          for (key = 0; key < length; key++) {
+            if (!equals(o1[key], o2[key])) return false;
+          }
+          return true;
+        }
+      } else if (isDate(o1)) {
+        if (!isDate(o2)) return false;
+        return equals(o1.getTime(), o2.getTime());
+      } else if (isRegExp(o1)) {
+        return isRegExp(o2) ? o1.toString() == o2.toString() : false;
+      } else {
+        if (isScope(o1) || isScope(o2) || isWindow(o1) || isWindow(o2) ||
+          isArray(o2) || isDate(o2) || isRegExp(o2)) return false;
+        keySet = {};
+        for (key in o1) {
+          if (key.charAt(0) === '$' || isFunction(o1[key])) continue;
+          if (!equals(o1[key], o2[key])) return false;
+          keySet[key] = true;
+        }
+        for (key in o2) {
+          if (!keySet.hasOwnProperty(key) &&
+              key.charAt(0) !== '$' &&
+              o2[key] !== undefined &&
+              !isFunction(o2[key])) return false;
+        }
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+var csp = function() {
+  if (isDefined(csp.isActive_)) return csp.isActive_;
+
+  var active = !!(document.querySelector('[ng-csp]') ||
+                  document.querySelector('[data-ng-csp]'));
+
+  if (!active) {
+    try {
+      /* jshint -W031, -W054 */
+      new Function('');
+      /* jshint +W031, +W054 */
+    } catch (e) {
+      active = true;
+    }
+  }
+
+  return (csp.isActive_ = active);
+};
+
+
+
+function concat(array1, array2, index) {
+  return array1.concat(slice.call(array2, index));
+}
+
+function sliceArgs(args, startIndex) {
+  return slice.call(args, startIndex || 0);
+}
+
+
+/* jshint -W101 */
+/**
+ * @ngdoc function
+ * @name angular.bind
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Returns a function which calls function `fn` bound to `self` (`self` becomes the `this` for
+ * `fn`). You can supply optional `args` that are prebound to the function. This feature is also
+ * known as [partial application](http://en.wikipedia.org/wiki/Partial_application), as
+ * distinguished from [function currying](http://en.wikipedia.org/wiki/Currying#Contrast_with_partial_function_application).
+ *
+ * @param {Object} self Context which `fn` should be evaluated in.
+ * @param {function()} fn Function to be bound.
+ * @param {...*} args Optional arguments to be prebound to the `fn` function call.
+ * @returns {function()} Function that wraps the `fn` with all the specified bindings.
+ */
+/* jshint +W101 */
+function bind(self, fn) {
+  var curryArgs = arguments.length > 2 ? sliceArgs(arguments, 2) : [];
+  if (isFunction(fn) && !(fn instanceof RegExp)) {
+    return curryArgs.length
+      ? function() {
+          return arguments.length
+            ? fn.apply(self, concat(curryArgs, arguments, 0))
+            : fn.apply(self, curryArgs);
+        }
+      : function() {
+          return arguments.length
+            ? fn.apply(self, arguments)
+            : fn.call(self);
+        };
+  } else {
+    // in IE, native methods are not functions so they cannot be bound (note: they don't need to be)
+    return fn;
+  }
+}
+
+
+function toJsonReplacer(key, value) {
+  var val = value;
+
+  if (typeof key === 'string' && key.charAt(0) === '$' && key.charAt(1) === '$') {
+    val = undefined;
+  } else if (isWindow(value)) {
+    val = '$WINDOW';
+  } else if (value &&  document === value) {
+    val = '$DOCUMENT';
+  } else if (isScope(value)) {
+    val = '$SCOPE';
+  }
+
+  return val;
+}
+
+
+/**
+ * @ngdoc function
+ * @name angular.toJson
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Serializes input into a JSON-formatted string. Properties with leading $$ characters will be
+ * stripped since angular uses this notation internally.
+ *
+ * @param {Object|Array|Date|string|number} obj Input to be serialized into JSON.
+ * @param {boolean|number} [pretty=2] If set to true, the JSON output will contain newlines and whitespace.
+ *    If set to an integer, the JSON output will contain that many spaces per indentation.
+ * @returns {string|undefined} JSON-ified string representing `obj`.
+ */
+function toJson(obj, pretty) {
+  if (typeof obj === 'undefined') return undefined;
+  if (!isNumber(pretty)) {
+    pretty = pretty ? 2 : null;
+  }
+  return JSON.stringify(obj, toJsonReplacer, pretty);
+}
+
+
+/**
+ * @ngdoc function
+ * @name angular.fromJson
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Deserializes a JSON string.
+ *
+ * @param {string} json JSON string to deserialize.
+ * @returns {Object|Array|string|number} Deserialized JSON string.
+ */
+function fromJson(json) {
+  return isString(json)
+      ? JSON.parse(json)
+      : json;
+}
+
+
+/**
+ * @returns {string} Returns the string representation of the element.
+ */
+function startingTag(element) {
+  element = jqLite(element).clone();
+  try {
+    // turns out IE does not let you set .html() on elements which
+    // are not allowed to have children. So we just ignore it.
+    element.empty();
+  } catch (e) {}
+  var elemHtml = jqLite('<div>').append(element).html();
+  try {
+    return element[0].nodeType === NODE_TYPE_TEXT ? lowercase(elemHtml) :
+        elemHtml.
+          match(/^(<[^>]+>)/)[1].
+          replace(/^<([\w\-]+)/, function(match, nodeName) { return '<' + lowercase(nodeName); });
+  } catch (e) {
+    return lowercase(elemHtml);
+  }
+
+}
+
+
+/////////////////////////////////////////////////
+
+/**
+ * Tries to decode the URI component without throwing an exception.
+ *
+ * @private
+ * @param str value potential URI component to check.
+ * @returns {boolean} True if `value` can be decoded
+ * with the decodeURIComponent function.
+ */
+function tryDecodeURIComponent(value) {
+  try {
+    return decodeURIComponent(value);
+  } catch (e) {
+    // Ignore any invalid uri component
+  }
+}
+
+
+/**
+ * Parses an escaped url query string into key-value pairs.
+ * @returns {Object.<string,boolean|Array>}
+ */
+function parseKeyValue(/**string*/keyValue) {
+  var obj = {}, key_value, key;
+  forEach((keyValue || "").split('&'), function(keyValue) {
+    if (keyValue) {
+      key_value = keyValue.replace(/\+/g,'%20').split('=');
+      key = tryDecodeURIComponent(key_value[0]);
+      if (isDefined(key)) {
+        var val = isDefined(key_value[1]) ? tryDecodeURIComponent(key_value[1]) : true;
+        if (!hasOwnProperty.call(obj, key)) {
+          obj[key] = val;
+        } else if (isArray(obj[key])) {
+          obj[key].push(val);
+        } else {
+          obj[key] = [obj[key],val];
+        }
+      }
+    }
+  });
+  return obj;
+}
+
+function toKeyValue(obj) {
+  var parts = [];
+  forEach(obj, function(value, key) {
+    if (isArray(value)) {
+      forEach(value, function(arrayValue) {
+        parts.push(encodeUriQuery(key, true) +
+                   (arrayValue === true ? '' : '=' + encodeUriQuery(arrayValue, true)));
+      });
+    } else {
+    parts.push(encodeUriQuery(key, true) +
+               (value === true ? '' : '=' + encodeUriQuery(value, true)));
+    }
+  });
+  return parts.length ? parts.join('&') : '';
+}
+
+
+/**
+ * We need our custom method because encodeURIComponent is too aggressive and doesn't follow
+ * http://www.ietf.org/rfc/rfc3986.txt with regards to the character set (pchar) allowed in path
+ * segments:
+ *    segment       = *pchar
+ *    pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
+ *    pct-encoded   = "%" HEXDIG HEXDIG
+ *    unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
+ *    sub-delims    = "!" / "$" / "&" / "'" / "(" / ")"
+ *                     / "*" / "+" / "," / ";" / "="
+ */
+function encodeUriSegment(val) {
+  return encodeUriQuery(val, true).
+             replace(/%26/gi, '&').
+             replace(/%3D/gi, '=').
+             replace(/%2B/gi, '+');
+}
+
+
+/**
+ * This method is intended for encoding *key* or *value* parts of query component. We need a custom
+ * method because encodeURIComponent is too aggressive and encodes stuff that doesn't have to be
+ * encoded per http://tools.ietf.org/html/rfc3986:
+ *    query       = *( pchar / "/" / "?" )
+ *    pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
+ *    unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
+ *    pct-encoded   = "%" HEXDIG HEXDIG
+ *    sub-delims    = "!" / "$" / "&" / "'" / "(" / ")"
+ *                     / "*" / "+" / "," / ";" / "="
+ */
+function encodeUriQuery(val, pctEncodeSpaces) {
+  return encodeURIComponent(val).
+             replace(/%40/gi, '@').
+             replace(/%3A/gi, ':').
+             replace(/%24/g, '$').
+             replace(/%2C/gi, ',').
+             replace(/%3B/gi, ';').
+             replace(/%20/g, (pctEncodeSpaces ? '%20' : '+'));
+}
+
+var ngAttrPrefixes = ['ng-', 'data-ng-', 'ng:', 'x-ng-'];
+
+function getNgAttribute(element, ngAttr) {
+  var attr, i, ii = ngAttrPrefixes.length;
+  element = jqLite(element);
+  for (i = 0; i < ii; ++i) {
+    attr = ngAttrPrefixes[i] + ngAttr;
+    if (isString(attr = element.attr(attr))) {
+      return attr;
+    }
+  }
+  return null;
+}
+
+/**
+ * @ngdoc directive
+ * @name ngApp
+ * @module ng
+ *
+ * @element ANY
+ * @param {angular.Module} ngApp an optional application
+ *   {@link angular.module module} name to load.
+ * @param {boolean=} ngStrictDi if this attribute is present on the app element, the injector will be
+ *   created in "strict-di" mode. This means that the application will fail to invoke functions which
+ *   do not use explicit function annotation (and are thus unsuitable for minification), as described
+ *   in {@link guide/di the Dependency Injection guide}, and useful debugging info will assist in
+ *   tracking down the root of these bugs.
+ *
+ * @description
+ *
+ * Use this directive to **auto-bootstrap** an AngularJS application. The `ngApp` directive
+ * designates the **root element** of the application and is typically placed near the root element
+ * of the page - e.g. on the `<body>` or `<html>` tags.
+ *
+ * Only one AngularJS application can be auto-bootstrapped per HTML document. The first `ngApp`
+ * found in the document will be used to define the root element to auto-bootstrap as an
+ * application. To run multiple applications in an HTML document you must manually bootstrap them using
+ * {@link angular.bootstrap} instead. AngularJS applications cannot be nested within each other.
+ *
+ * You can specify an **AngularJS module** to be used as the root module for the application.  This
+ * module will be loaded into the {@link auto.$injector} when the application is bootstrapped. It
+ * should contain the application code needed or have dependencies on other modules that will
+ * contain the code. See {@link angular.module} for more information.
+ *
+ * In the example below if the `ngApp` directive were not placed on the `html` element then the
+ * document would not be compiled, the `AppController` would not be instantiated and the `{{ a+b }}`
+ * would not be resolved to `3`.
+ *
+ * `ngApp` is the easiest, and most common way to bootstrap an application.
+ *
+ <example module="ngAppDemo">
+   <file name="index.html">
+   <div ng-controller="ngAppDemoController">
+     I can add: {{a}} + {{b}} =  {{ a+b }}
+   </div>
+   </file>
+   <file name="script.js">
+   angular.module('ngAppDemo', []).controller('ngAppDemoController', function($scope) {
+     $scope.a = 1;
+     $scope.b = 2;
+   });
+   </file>
+ </example>
+ *
+ * Using `ngStrictDi`, you would see something like this:
+ *
+ <example ng-app-included="true">
+   <file name="index.html">
+   <div ng-app="ngAppStrictDemo" ng-strict-di>
+       <div ng-controller="GoodController1">
+           I can add: {{a}} + {{b}} =  {{ a+b }}
+
+           <p>This renders because the controller does not fail to
+              instantiate, by using explicit annotation style (see
+              script.js for details)
+           </p>
+       </div>
+
+       <div ng-controller="GoodController2">
+           Name: <input ng-model="name"><br />
+           Hello, {{name}}!
+
+           <p>This renders because the controller does not fail to
+              instantiate, by using explicit annotation style
+              (see script.js for details)
+           </p>
+       </div>
+
+       <div ng-controller="BadController">
+           I can add: {{a}} + {{b}} =  {{ a+b }}
+
+           <p>The controller could not be instantiated, due to relying
+              on automatic function annotations (which are disabled in
+              strict mode). As such, the content of this section is not
+              interpolated, and there should be an error in your web console.
+           </p>
+       </div>
+   </div>
+   </file>
+   <file name="script.js">
+   angular.module('ngAppStrictDemo', [])
+     // BadController will fail to instantiate, due to relying on automatic function annotation,
+     // rather than an explicit annotation
+     .controller('BadController', function($scope) {
+       $scope.a = 1;
+       $scope.b = 2;
+     })
+     // Unlike BadController, GoodController1 and GoodController2 will not fail to be instantiated,
+     // due to using explicit annotations using the array style and $inject property, respectively.
+     .controller('GoodController1', ['$scope', function($scope) {
+       $scope.a = 1;
+       $scope.b = 2;
+     }])
+     .controller('GoodController2', GoodController2);
+     function GoodController2($scope) {
+       $scope.name = "World";
+     }
+     GoodController2.$inject = ['$scope'];
+   </file>
+   <file name="style.css">
+   div[ng-controller] {
+       margin-bottom: 1em;
+       -webkit-border-radius: 4px;
+       border-radius: 4px;
+       border: 1px solid;
+       padding: .5em;
+   }
+   div[ng-controller^=Good] {
+       border-color: #d6e9c6;
+       background-color: #dff0d8;
+       color: #3c763d;
+   }
+   div[ng-controller^=Bad] {
+       border-color: #ebccd1;
+       background-color: #f2dede;
+       color: #a94442;
+       margin-bottom: 0;
+   }
+   </file>
+ </example>
+ */
+function angularInit(element, bootstrap) {
+  var appElement,
+      module,
+      config = {};
+
+  // The element `element` has priority over any other element
+  forEach(ngAttrPrefixes, function(prefix) {
+    var name = prefix + 'app';
+
+    if (!appElement && element.hasAttribute && element.hasAttribute(name)) {
+      appElement = element;
+      module = element.getAttribute(name);
+    }
+  });
+  forEach(ngAttrPrefixes, function(prefix) {
+    var name = prefix + 'app';
+    var candidate;
+
+    if (!appElement && (candidate = element.querySelector('[' + name.replace(':', '\\:') + ']'))) {
+      appElement = candidate;
+      module = candidate.getAttribute(name);
+    }
+  });
+  if (appElement) {
+    config.strictDi = getNgAttribute(appElement, "strict-di") !== null;
+    bootstrap(appElement, module ? [module] : [], config);
+  }
+}
+
+/**
+ * @ngdoc function
+ * @name angular.bootstrap
+ * @module ng
+ * @description
+ * Use this function to manually start up angular application.
+ *
+ * See: {@link guide/bootstrap Bootstrap}
+ *
+ * Note that Protractor based end-to-end tests cannot use this function to bootstrap manually.
+ * They must use {@link ng.directive:ngApp ngApp}.
+ *
+ * Angular will detect if it has been loaded into the browser more than once and only allow the
+ * first loaded script to be bootstrapped and will report a warning to the browser console for
+ * each of the subsequent scripts. This prevents strange results in applications, where otherwise
+ * multiple instances of Angular try to work on the DOM.
+ *
+ * ```html
+ * <!doctype html>
+ * <html>
+ * <body>
+ * <div ng-controller="WelcomeController">
+ *   {{greeting}}
+ * </div>
+ *
+ * <script src="angular.js"></script>
+ * <script>
+ *   var app = angular.module('demo', [])
+ *   .controller('WelcomeController', function($scope) {
+ *       $scope.greeting = 'Welcome!';
+ *   });
+ *   angular.bootstrap(document, ['demo']);
+ * </script>
+ * </body>
+ * </html>
+ * ```
+ *
+ * @param {DOMElement} element DOM element which is the root of angular application.
+ * @param {Array<String|Function|Array>=} modules an array of modules to load into the application.
+ *     Each item in the array should be the name of a predefined module or a (DI annotated)
+ *     function that will be invoked by the injector as a `config` block.
+ *     See: {@link angular.module modules}
+ * @param {Object=} config an object for defining configuration options for the application. The
+ *     following keys are supported:
+ *
+ * * `strictDi` - disable automatic function annotation for the application. This is meant to
+ *   assist in finding bugs which break minified code. Defaults to `false`.
+ *
+ * @returns {auto.$injector} Returns the newly created injector for this app.
+ */
+function bootstrap(element, modules, config) {
+  if (!isObject(config)) config = {};
+  var defaultConfig = {
+    strictDi: false
+  };
+  config = extend(defaultConfig, config);
+  var doBootstrap = function() {
+    element = jqLite(element);
+
+    if (element.injector()) {
+      var tag = (element[0] === document) ? 'document' : startingTag(element);
+      //Encode angle brackets to prevent input from being sanitized to empty string #8683
+      throw ngMinErr(
+          'btstrpd',
+          "App Already Bootstrapped with this Element '{0}'",
+          tag.replace(/</,'&lt;').replace(/>/,'&gt;'));
+    }
+
+    modules = modules || [];
+    modules.unshift(['$provide', function($provide) {
+      $provide.value('$rootElement', element);
+    }]);
+
+    if (config.debugInfoEnabled) {
+      // Pushing so that this overrides `debugInfoEnabled` setting defined in user's `modules`.
+      modules.push(['$compileProvider', function($compileProvider) {
+        $compileProvider.debugInfoEnabled(true);
+      }]);
+    }
+
+    modules.unshift('ng');
+    var injector = createInjector(modules, config.strictDi);
+    injector.invoke(['$rootScope', '$rootElement', '$compile', '$injector',
+       function bootstrapApply(scope, element, compile, injector) {
+        scope.$apply(function() {
+          element.data('$injector', injector);
+          compile(element)(scope);
+        });
+      }]
+    );
+    return injector;
+  };
+
+  var NG_ENABLE_DEBUG_INFO = /^NG_ENABLE_DEBUG_INFO!/;
+  var NG_DEFER_BOOTSTRAP = /^NG_DEFER_BOOTSTRAP!/;
+
+  if (window && NG_ENABLE_DEBUG_INFO.test(window.name)) {
+    config.debugInfoEnabled = true;
+    window.name = window.name.replace(NG_ENABLE_DEBUG_INFO, '');
+  }
+
+  if (window && !NG_DEFER_BOOTSTRAP.test(window.name)) {
+    return doBootstrap();
+  }
+
+  window.name = window.name.replace(NG_DEFER_BOOTSTRAP, '');
+  angular.resumeBootstrap = function(extraModules) {
+    forEach(extraModules, function(module) {
+      modules.push(module);
+    });
+    return doBootstrap();
+  };
+
+  if (isFunction(angular.resumeDeferredBootstrap)) {
+    angular.resumeDeferredBootstrap();
+  }
+}
+
+/**
+ * @ngdoc function
+ * @name angular.reloadWithDebugInfo
+ * @module ng
+ * @description
+ * Use this function to reload the current application with debug information turned on.
+ * This takes precedence over a call to `$compileProvider.debugInfoEnabled(false)`.
+ *
+ * See {@link ng.$compileProvider#debugInfoEnabled} for more.
+ */
+function reloadWithDebugInfo() {
+  window.name = 'NG_ENABLE_DEBUG_INFO!' + window.name;
+  window.location.reload();
+}
+
+/**
+ * @name angular.getTestability
+ * @module ng
+ * @description
+ * Get the testability service for the instance of Angular on the given
+ * element.
+ * @param {DOMElement} element DOM element which is the root of angular application.
+ */
+function getTestability(rootElement) {
+  var injector = angular.element(rootElement).injector();
+  if (!injector) {
+    throw ngMinErr('test',
+      'no injector found for element argument to getTestability');
+  }
+  return injector.get('$$testability');
+}
+
+var SNAKE_CASE_REGEXP = /[A-Z]/g;
+function snake_case(name, separator) {
+  separator = separator || '_';
+  return name.replace(SNAKE_CASE_REGEXP, function(letter, pos) {
+    return (pos ? separator : '') + letter.toLowerCase();
+  });
+}
+
+var bindJQueryFired = false;
+var skipDestroyOnNextJQueryCleanData;
+function bindJQuery() {
+  var originalCleanData;
+
+  if (bindJQueryFired) {
+    return;
+  }
+
+  // bind to jQuery if present;
+  jQuery = window.jQuery;
+  // Use jQuery if it exists with proper functionality, otherwise default to us.
+  // Angular 1.2+ requires jQuery 1.7+ for on()/off() support.
+  // Angular 1.3+ technically requires at least jQuery 2.1+ but it may work with older
+  // versions. It will not work for sure with jQuery <1.7, though.
+  if (jQuery && jQuery.fn.on) {
+    jqLite = jQuery;
+    extend(jQuery.fn, {
+      scope: JQLitePrototype.scope,
+      isolateScope: JQLitePrototype.isolateScope,
+      controller: JQLitePrototype.controller,
+      injector: JQLitePrototype.injector,
+      inheritedData: JQLitePrototype.inheritedData
+    });
+
+    // All nodes removed from the DOM via various jQuery APIs like .remove()
+    // are passed through jQuery.cleanData. Monkey-patch this method to fire
+    // the $destroy event on all removed nodes.
+    originalCleanData = jQuery.cleanData;
+    jQuery.cleanData = function(elems) {
+      var events;
+      if (!skipDestroyOnNextJQueryCleanData) {
+        for (var i = 0, elem; (elem = elems[i]) != null; i++) {
+          events = jQuery._data(elem, "events");
+          if (events && events.$destroy) {
+            jQuery(elem).triggerHandler('$destroy');
+          }
+        }
+      } else {
+        skipDestroyOnNextJQueryCleanData = false;
+      }
+      originalCleanData(elems);
+    };
+  } else {
+    jqLite = JQLite;
+  }
+
+  angular.element = jqLite;
+
+  // Prevent double-proxying.
+  bindJQueryFired = true;
+}
+
+/**
+ * throw error if the argument is falsy.
+ */
+function assertArg(arg, name, reason) {
+  if (!arg) {
+    throw ngMinErr('areq', "Argument '{0}' is {1}", (name || '?'), (reason || "required"));
+  }
+  return arg;
+}
+
+function assertArgFn(arg, name, acceptArrayAnnotation) {
+  if (acceptArrayAnnotation && isArray(arg)) {
+      arg = arg[arg.length - 1];
+  }
+
+  assertArg(isFunction(arg), name, 'not a function, got ' +
+      (arg && typeof arg === 'object' ? arg.constructor.name || 'Object' : typeof arg));
+  return arg;
+}
+
+/**
+ * throw error if the name given is hasOwnProperty
+ * @param  {String} name    the name to test
+ * @param  {String} context the context in which the name is used, such as module or directive
+ */
+function assertNotHasOwnProperty(name, context) {
+  if (name === 'hasOwnProperty') {
+    throw ngMinErr('badname', "hasOwnProperty is not a valid {0} name", context);
+  }
+}
+
+/**
+ * Return the value accessible from the object by path. Any undefined traversals are ignored
+ * @param {Object} obj starting object
+ * @param {String} path path to traverse
+ * @param {boolean} [bindFnToScope=true]
+ * @returns {Object} value as accessible by path
+ */
+//TODO(misko): this function needs to be removed
+function getter(obj, path, bindFnToScope) {
+  if (!path) return obj;
+  var keys = path.split('.');
+  var key;
+  var lastInstance = obj;
+  var len = keys.length;
+
+  for (var i = 0; i < len; i++) {
+    key = keys[i];
+    if (obj) {
+      obj = (lastInstance = obj)[key];
+    }
+  }
+  if (!bindFnToScope && isFunction(obj)) {
+    return bind(lastInstance, obj);
+  }
+  return obj;
+}
+
+/**
+ * Return the DOM siblings between the first and last node in the given array.
+ * @param {Array} array like object
+ * @returns {jqLite} jqLite collection containing the nodes
+ */
+function getBlockNodes(nodes) {
+  // TODO(perf): just check if all items in `nodes` are siblings and if they are return the original
+  //             collection, otherwise update the original collection.
+  var node = nodes[0];
+  var endNode = nodes[nodes.length - 1];
+  var blockNodes = [node];
+
+  do {
+    node = node.nextSibling;
+    if (!node) break;
+    blockNodes.push(node);
+  } while (node !== endNode);
+
+  return jqLite(blockNodes);
+}
+
+
+/**
+ * Creates a new object without a prototype. This object is useful for lookup without having to
+ * guard against prototypically inherited properties via hasOwnProperty.
+ *
+ * Related micro-benchmarks:
+ * - http://jsperf.com/object-create2
+ * - http://jsperf.com/proto-map-lookup/2
+ * - http://jsperf.com/for-in-vs-object-keys2
+ *
+ * @returns {Object}
+ */
+function createMap() {
+  return Object.create(null);
+}
+
+var NODE_TYPE_ELEMENT = 1;
+var NODE_TYPE_ATTRIBUTE = 2;
+var NODE_TYPE_TEXT = 3;
+var NODE_TYPE_COMMENT = 8;
+var NODE_TYPE_DOCUMENT = 9;
+var NODE_TYPE_DOCUMENT_FRAGMENT = 11;
+
+/**
+ * @ngdoc type
+ * @name angular.Module
+ * @module ng
+ * @description
+ *
+ * Interface for configuring angular {@link angular.module modules}.
+ */
+
+function setupModuleLoader(window) {
+
+  var $injectorMinErr = minErr('$injector');
+  var ngMinErr = minErr('ng');
+
+  function ensure(obj, name, factory) {
+    return obj[name] || (obj[name] = factory());
+  }
+
+  var angular = ensure(window, 'angular', Object);
+
+  // We need to expose `angular.$$minErr` to modules such as `ngResource` that reference it during bootstrap
+  angular.$$minErr = angular.$$minErr || minErr;
+
+  return ensure(angular, 'module', function() {
+    /** @type {Object.<string, angular.Module>} */
+    var modules = {};
+
+    /**
+     * @ngdoc function
+     * @name angular.module
+     * @module ng
+     * @description
+     *
+     * The `angular.module` is a global place for creating, registering and retrieving Angular
+     * modules.
+     * All modules (angular core or 3rd party) that should be available to an application must be
+     * registered using this mechanism.
+     *
+     * When passed two or more arguments, a new module is created.  If passed only one argument, an
+     * existing module (the name passed as the first argument to `module`) is retrieved.
+     *
+     *
+     * # Module
+     *
+     * A module is a collection of services, directives, controllers, filters, and configuration information.
+     * `angular.module` is used to configure the {@link auto.$injector $injector}.
+     *
+     * ```js
+     * // Create a new module
+     * var myModule = angular.module('myModule', []);
+     *
+     * // register a new service
+     * myModule.value('appName', 'MyCoolApp');
+     *
+     * // configure existing services inside initialization blocks.
+     * myModule.config(['$locationProvider', function($locationProvider) {
+     *   // Configure existing providers
+     *   $locationProvider.hashPrefix('!');
+     * }]);
+     * ```
+     *
+     * Then you can create an injector and load your modules like this:
+     *
+     * ```js
+     * var injector = angular.injector(['ng', 'myModule'])
+     * ```
+     *
+     * However it's more likely that you'll just use
+     * {@link ng.directive:ngApp ngApp} or
+     * {@link angular.bootstrap} to simplify this process for you.
+     *
+     * @param {!string} name The name of the module to create or retrieve.
+     * @param {!Array.<string>=} requires If specified then new module is being created. If
+     *        unspecified then the module is being retrieved for further configuration.
+     * @param {Function=} configFn Optional configuration function for the module. Same as
+     *        {@link angular.Module#config Module#config()}.
+     * @returns {module} new module with the {@link angular.Module} api.
+     */
+    return function module(name, requires, configFn) {
+      var assertNotHasOwnProperty = function(name, context) {
+        if (name === 'hasOwnProperty') {
+          throw ngMinErr('badname', 'hasOwnProperty is not a valid {0} name', context);
+        }
+      };
+
+      assertNotHasOwnProperty(name, 'module');
+      if (requires && modules.hasOwnProperty(name)) {
+        modules[name] = null;
+      }
+      return ensure(modules, name, function() {
+        if (!requires) {
+          throw $injectorMinErr('nomod', "Module '{0}' is not available! You either misspelled " +
+             "the module name or forgot to load it. If registering a module ensure that you " +
+             "specify the dependencies as the second argument.", name);
+        }
+
+        /** @type {!Array.<Array.<*>>} */
+        var invokeQueue = [];
+
+        /** @type {!Array.<Function>} */
+        var configBlocks = [];
+
+        /** @type {!Array.<Function>} */
+        var runBlocks = [];
+
+        var config = invokeLater('$injector', 'invoke', 'push', configBlocks);
+
+        /** @type {angular.Module} */
+        var moduleInstance = {
+          // Private state
+          _invokeQueue: invokeQueue,
+          _configBlocks: configBlocks,
+          _runBlocks: runBlocks,
+
+          /**
+           * @ngdoc property
+           * @name angular.Module#requires
+           * @module ng
+           *
+           * @description
+           * Holds the list of modules which the injector will load before the current module is
+           * loaded.
+           */
+          requires: requires,
+
+          /**
+           * @ngdoc property
+           * @name angular.Module#name
+           * @module ng
+           *
+           * @description
+           * Name of the module.
+           */
+          name: name,
+
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#provider
+           * @module ng
+           * @param {string} name service name
+           * @param {Function} providerType Construction function for creating new instance of the
+           *                                service.
+           * @description
+           * See {@link auto.$provide#provider $provide.provider()}.
+           */
+          provider: invokeLater('$provide', 'provider'),
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#factory
+           * @module ng
+           * @param {string} name service name
+           * @param {Function} providerFunction Function for creating new instance of the service.
+           * @description
+           * See {@link auto.$provide#factory $provide.factory()}.
+           */
+          factory: invokeLater('$provide', 'factory'),
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#service
+           * @module ng
+           * @param {string} name service name
+           * @param {Function} constructor A constructor function that will be instantiated.
+           * @description
+           * See {@link auto.$provide#service $provide.service()}.
+           */
+          service: invokeLater('$provide', 'service'),
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#value
+           * @module ng
+           * @param {string} name service name
+           * @param {*} object Service instance object.
+           * @description
+           * See {@link auto.$provide#value $provide.value()}.
+           */
+          value: invokeLater('$provide', 'value'),
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#constant
+           * @module ng
+           * @param {string} name constant name
+           * @param {*} object Constant value.
+           * @description
+           * Because the constant are fixed, they get applied before other provide methods.
+           * See {@link auto.$provide#constant $provide.constant()}.
+           */
+          constant: invokeLater('$provide', 'constant', 'unshift'),
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#animation
+           * @module ng
+           * @param {string} name animation name
+           * @param {Function} animationFactory Factory function for creating new instance of an
+           *                                    animation.
+           * @description
+           *
+           * **NOTE**: animations take effect only if the **ngAnimate** module is loaded.
+           *
+           *
+           * Defines an animation hook that can be later used with
+           * {@link ngAnimate.$animate $animate} service and directives that use this service.
+           *
+           * ```js
+           * module.animation('.animation-name', function($inject1, $inject2) {
+           *   return {
+           *     eventName : function(element, done) {
+           *       //code to run the animation
+           *       //once complete, then run done()
+           *       return function cancellationFunction(element) {
+           *         //code to cancel the animation
+           *       }
+           *     }
+           *   }
+           * })
+           * ```
+           *
+           * See {@link ng.$animateProvider#register $animateProvider.register()} and
+           * {@link ngAnimate ngAnimate module} for more information.
+           */
+          animation: invokeLater('$animateProvider', 'register'),
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#filter
+           * @module ng
+           * @param {string} name Filter name - this must be a valid angular expression identifier
+           * @param {Function} filterFactory Factory function for creating new instance of filter.
+           * @description
+           * See {@link ng.$filterProvider#register $filterProvider.register()}.
+           *
+           * <div class="alert alert-warning">
+           * **Note:** Filter names must be valid angular {@link expression} identifiers, such as `uppercase` or `orderBy`.
+           * Names with special characters, such as hyphens and dots, are not allowed. If you wish to namespace
+           * your filters, then you can use capitalization (`myappSubsectionFilterx`) or underscores
+           * (`myapp_subsection_filterx`).
+           * </div>
+           */
+          filter: invokeLater('$filterProvider', 'register'),
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#controller
+           * @module ng
+           * @param {string|Object} name Controller name, or an object map of controllers where the
+           *    keys are the names and the values are the constructors.
+           * @param {Function} constructor Controller constructor function.
+           * @description
+           * See {@link ng.$controllerProvider#register $controllerProvider.register()}.
+           */
+          controller: invokeLater('$controllerProvider', 'register'),
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#directive
+           * @module ng
+           * @param {string|Object} name Directive name, or an object map of directives where the
+           *    keys are the names and the values are the factories.
+           * @param {Function} directiveFactory Factory function for creating new instance of
+           * directives.
+           * @description
+           * See {@link ng.$compileProvider#directive $compileProvider.directive()}.
+           */
+          directive: invokeLater('$compileProvider', 'directive'),
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#config
+           * @module ng
+           * @param {Function} configFn Execute this function on module load. Useful for service
+           *    configuration.
+           * @description
+           * Use this method to register work which needs to be performed on module loading.
+           * For more about how to configure services, see
+           * {@link providers#provider-recipe Provider Recipe}.
+           */
+          config: config,
+
+          /**
+           * @ngdoc method
+           * @name angular.Module#run
+           * @module ng
+           * @param {Function} initializationFn Execute this function after injector creation.
+           *    Useful for application initialization.
+           * @description
+           * Use this method to register work which should be performed when the injector is done
+           * loading all modules.
+           */
+          run: function(block) {
+            runBlocks.push(block);
+            return this;
+          }
+        };
+
+        if (configFn) {
+          config(configFn);
+        }
+
+        return moduleInstance;
+
+        /**
+         * @param {string} provider
+         * @param {string} method
+         * @param {String=} insertMethod
+         * @returns {angular.Module}
+         */
+        function invokeLater(provider, method, insertMethod, queue) {
+          if (!queue) queue = invokeQueue;
+          return function() {
+            queue[insertMethod || 'push']([provider, method, arguments]);
+            return moduleInstance;
+          };
+        }
+      });
+    };
+  });
+
+}
+
+/* global: toDebugString: true */
+
+function serializeObject(obj) {
+  var seen = [];
+
+  return JSON.stringify(obj, function(key, val) {
+    val = toJsonReplacer(key, val);
+    if (isObject(val)) {
+
+      if (seen.indexOf(val) >= 0) return '<<already seen>>';
+
+      seen.push(val);
+    }
+    return val;
+  });
+}
+
+function toDebugString(obj) {
+  if (typeof obj === 'function') {
+    return obj.toString().replace(/ \{[\s\S]*$/, '');
+  } else if (typeof obj === 'undefined') {
+    return 'undefined';
+  } else if (typeof obj !== 'string') {
+    return serializeObject(obj);
+  }
+  return obj;
+}
+
+/* global angularModule: true,
+  version: true,
+
+  $LocaleProvider,
+  $CompileProvider,
+
+  htmlAnchorDirective,
+  inputDirective,
+  inputDirective,
+  formDirective,
+  scriptDirective,
+  selectDirective,
+  styleDirective,
+  optionDirective,
+  ngBindDirective,
+  ngBindHtmlDirective,
+  ngBindTemplateDirective,
+  ngClassDirective,
+  ngClassEvenDirective,
+  ngClassOddDirective,
+  ngCspDirective,
+  ngCloakDirective,
+  ngControllerDirective,
+  ngFormDirective,
+  ngHideDirective,
+  ngIfDirective,
+  ngIncludeDirective,
+  ngIncludeFillContentDirective,
+  ngInitDirective,
+  ngNonBindableDirective,
+  ngPluralizeDirective,
+  ngRepeatDirective,
+  ngShowDirective,
+  ngStyleDirective,
+  ngSwitchDirective,
+  ngSwitchWhenDirective,
+  ngSwitchDefaultDirective,
+  ngOptionsDirective,
+  ngTranscludeDirective,
+  ngModelDirective,
+  ngListDirective,
+  ngChangeDirective,
+  patternDirective,
+  patternDirective,
+  requiredDirective,
+  requiredDirective,
+  minlengthDirective,
+  minlengthDirective,
+  maxlengthDirective,
+  maxlengthDirective,
+  ngValueDirective,
+  ngModelOptionsDirective,
+  ngAttributeAliasDirectives,
+  ngEventDirectives,
+
+  $AnchorScrollProvider,
+  $AnimateProvider,
+  $BrowserProvider,
+  $CacheFactoryProvider,
+  $ControllerProvider,
+  $DocumentProvider,
+  $ExceptionHandlerProvider,
+  $FilterProvider,
+  $InterpolateProvider,
+  $IntervalProvider,
+  $HttpProvider,
+  $HttpBackendProvider,
+  $LocationProvider,
+  $LogProvider,
+  $ParseProvider,
+  $RootScopeProvider,
+  $QProvider,
+  $$QProvider,
+  $$SanitizeUriProvider,
+  $SceProvider,
+  $SceDelegateProvider,
+  $SnifferProvider,
+  $TemplateCacheProvider,
+  $TemplateRequestProvider,
+  $$TestabilityProvider,
+  $TimeoutProvider,
+  $$RAFProvider,
+  $$AsyncCallbackProvider,
+  $WindowProvider,
+  $$jqLiteProvider
+*/
+
+
+/**
+ * @ngdoc object
+ * @name angular.version
+ * @module ng
+ * @description
+ * An object that contains information about the current AngularJS version. This object has the
+ * following properties:
+ *
+ * - `full` – `{string}` – Full version string, such as "0.9.18".
+ * - `major` – `{number}` – Major version number, such as "0".
+ * - `minor` – `{number}` – Minor version number, such as "9".
+ * - `dot` – `{number}` – Dot version number, such as "18".
+ * - `codeName` – `{string}` – Code name of the release, such as "jiggling-armfat".
+ */
+var version = {
+  full: '1.3.20',    // all of these placeholder strings will be replaced by grunt's
+  major: 1,    // package task
+  minor: 3,
+  dot: 20,
+  codeName: 'shallow-translucence'
+};
+
+
+function publishExternalAPI(angular) {
+  extend(angular, {
+    'bootstrap': bootstrap,
+    'copy': copy,
+    'extend': extend,
+    'equals': equals,
+    'element': jqLite,
+    'forEach': forEach,
+    'injector': createInjector,
+    'noop': noop,
+    'bind': bind,
+    'toJson': toJson,
+    'fromJson': fromJson,
+    'identity': identity,
+    'isUndefined': isUndefined,
+    'isDefined': isDefined,
+    'isString': isString,
+    'isFunction': isFunction,
+    'isObject': isObject,
+    'isNumber': isNumber,
+    'isElement': isElement,
+    'isArray': isArray,
+    'version': version,
+    'isDate': isDate,
+    'lowercase': lowercase,
+    'uppercase': uppercase,
+    'callbacks': {counter: 0},
+    'getTestability': getTestability,
+    '$$minErr': minErr,
+    '$$csp': csp,
+    'reloadWithDebugInfo': reloadWithDebugInfo
+  });
+
+  angularModule = setupModuleLoader(window);
+  try {
+    angularModule('ngLocale');
+  } catch (e) {
+    angularModule('ngLocale', []).provider('$locale', $LocaleProvider);
+  }
+
+  angularModule('ng', ['ngLocale'], ['$provide',
+    function ngModule($provide) {
+      // $$sanitizeUriProvider needs to be before $compileProvider as it is used by it.
+      $provide.provider({
+        $$sanitizeUri: $$SanitizeUriProvider
+      });
+      $provide.provider('$compile', $CompileProvider).
+        directive({
+            a: htmlAnchorDirective,
+            input: inputDirective,
+            textarea: inputDirective,
+            form: formDirective,
+            script: scriptDirective,
+            select: selectDirective,
+            style: styleDirective,
+            option: optionDirective,
+            ngBind: ngBindDirective,
+            ngBindHtml: ngBindHtmlDirective,
+            ngBindTemplate: ngBindTemplateDirective,
+            ngClass: ngClassDirective,
+            ngClassEven: ngClassEvenDirective,
+            ngClassOdd: ngClassOddDirective,
+            ngCloak: ngCloakDirective,
+            ngController: ngControllerDirective,
+            ngForm: ngFormDirective,
+            ngHide: ngHideDirective,
+            ngIf: ngIfDirective,
+            ngInclude: ngIncludeDirective,
+            ngInit: ngInitDirective,
+            ngNonBindable: ngNonBindableDirective,
+            ngPluralize: ngPluralizeDirective,
+            ngRepeat: ngRepeatDirective,
+            ngShow: ngShowDirective,
+            ngStyle: ngStyleDirective,
+            ngSwitch: ngSwitchDirective,
+            ngSwitchWhen: ngSwitchWhenDirective,
+            ngSwitchDefault: ngSwitchDefaultDirective,
+            ngOptions: ngOptionsDirective,
+            ngTransclude: ngTranscludeDirective,
+            ngModel: ngModelDirective,
+            ngList: ngListDirective,
+            ngChange: ngChangeDirective,
+            pattern: patternDirective,
+            ngPattern: patternDirective,
+            required: requiredDirective,
+            ngRequired: requiredDirective,
+            minlength: minlengthDirective,
+            ngMinlength: minlengthDirective,
+            maxlength: maxlengthDirective,
+            ngMaxlength: maxlengthDirective,
+            ngValue: ngValueDirective,
+            ngModelOptions: ngModelOptionsDirective
+        }).
+        directive({
+          ngInclude: ngIncludeFillContentDirective
+        }).
+        directive(ngAttributeAliasDirectives).
+        directive(ngEventDirectives);
+      $provide.provider({
+        $anchorScroll: $AnchorScrollProvider,
+        $animate: $AnimateProvider,
+        $browser: $BrowserProvider,
+        $cacheFactory: $CacheFactoryProvider,
+        $controller: $ControllerProvider,
+        $document: $DocumentProvider,
+        $exceptionHandler: $ExceptionHandlerProvider,
+        $filter: $FilterProvider,
+        $interpolate: $InterpolateProvider,
+        $interval: $IntervalProvider,
+        $http: $HttpProvider,
+        $httpBackend: $HttpBackendProvider,
+        $location: $LocationProvider,
+        $log: $LogProvider,
+        $parse: $ParseProvider,
+        $rootScope: $RootScopeProvider,
+        $q: $QProvider,
+        $$q: $$QProvider,
+        $sce: $SceProvider,
+        $sceDelegate: $SceDelegateProvider,
+        $sniffer: $SnifferProvider,
+        $templateCache: $TemplateCacheProvider,
+        $templateRequest: $TemplateRequestProvider,
+        $$testability: $$TestabilityProvider,
+        $timeout: $TimeoutProvider,
+        $window: $WindowProvider,
+        $$rAF: $$RAFProvider,
+        $$asyncCallback: $$AsyncCallbackProvider,
+        $$jqLite: $$jqLiteProvider
+      });
+    }
+  ]);
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ *     Any commits to this file should be reviewed with security in mind.  *
+ *   Changes to this file can potentially create security vulnerabilities. *
+ *          An approval from 2 Core members with history of modifying      *
+ *                         this file is required.                          *
+ *                                                                         *
+ *  Does the change somehow allow for arbitrary javascript to be executed? *
+ *    Or allows for someone to change the prototype of built-in objects?   *
+ *     Or gives undesired access to variables likes document or window?    *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/* global JQLitePrototype: true,
+  addEventListenerFn: true,
+  removeEventListenerFn: true,
+  BOOLEAN_ATTR: true,
+  ALIASED_ATTR: true,
+*/
+
+//////////////////////////////////
+//JQLite
+//////////////////////////////////
+
+/**
+ * @ngdoc function
+ * @name angular.element
+ * @module ng
+ * @kind function
+ *
+ * @description
+ * Wraps a raw DOM element or HTML string as a [jQuery](http://jquery.com) element.
+ *
+ * If jQuery is available, `angular.element` is an alias for the
+ * [jQuery](http://api.jquery.com/jQuery/) function. If jQuery is not available, `angular.element`
+ * delegates to Angular's built-in subset of jQuery, called "jQuery lite" or "jqLite."
+ *
+ * <div class="alert alert-success">jqLite is a tiny, API-compatible subset of jQuery that allows
+ * Angular to manipulate the DOM in a cross-browser compatible way. **jqLite** implements only the most
+ * commonly needed functionality with the goal of having a very small footprint.</div>
+ *
+ * To use `jQuery`, simply ensure it is loaded before the `angular.js` file.
+ *
+ * <div class="alert">**Note:** all element references in Angular are always wrapped with jQuery or
+ * jqLite; they are never raw DOM references.</div>
+ *
+ * ## Angular's jqLite
+ * jqLite provides only the following jQuery methods:
+ *
+ * - [`addClass()`](http://api.jquery.com/addClass/)
+ * - [`after()`](http://api.jquery.com/after/)
+ * - [`append()`](http://api.jquery.com/append/)
+ * - [`attr()`](http://api.jquery.com/attr/) - Does not support functions as parameters
+ * - [`bind()`](http://api.jquery.com/bind/) - Does not support namespaces, selectors or eventData
+ * - [`children()`](http://api.jquery.com/children/) - Does not support selectors
+ * - [`clone()`](http://api.jquery.com/clone/)
+ * - [`contents()`](http://api.jquery.com/contents/)
+ * - [`css()`](http://api.jquery.com/css/) - Only retrieves inline-styles, does not call `getComputedStyle()`. As a setter, does not convert numbers to strings or append 'px'.
+ * - [`data()`](http://api.jquery.com/data/)
+ * - [`detach()`](http://api.jquery.com/detach/)
+ * - [`empty()`](http://api.jquery.com/empty/)
+ * - [`eq()`](http://api.jquery.com/eq/)
+ * - [`find()`](http://api.jquery.com/find/) - Limited to lookups by tag name
+ * - [`hasClass()`](http://api.jquery.com/hasClass/)
+ * - [`html()`](http://api.jquery.com/html/)
+ * - [`next()`](http://api.jquery.com/next/) - Does not support selectors
+ * - [`on()`](http://api.jquery.com/on/) - Does not support namespaces, selectors or eventData
+ * - [`off()`](http://api.jquery.com/off/) - Does not support namespaces or selectors
+ * - [`one()`](http://api.jquery.com/one/) - Does not support namespaces or selectors
+ * - [`parent()`](http://api.jquery.com/parent/) - Does not support selectors
+ * - [`prepend()`](http://api.jquery.com/prepend/)
+ * - [`prop()`](http://api.jquery.com/prop/)
+ * - [`ready()`](http://api.jquery.com/ready/)
+ * - [`remove()`](http://api.jquery.com/remove/)
+ * - [`removeAttr()`](http://api.jquery.com/removeAttr/)
+ * - [`removeClass()`](http://api.jquery.com/removeClass/)
+ * - [`removeData()`](http://api.jquery.com/removeData/)
+ * - [`replaceWith()`](http://api.jquery.com/replaceWith/)
+ * - [`text()`](http://api.jquery.com/text/)
+ * - [`toggleClass()`](http://api.jquery.com/toggleClass/)
+ * - [`triggerHandler()`](http://api.jquery.com/triggerHandler/) - Passes a dummy event object to handlers.
+ * - [`unbind()`](http://api.jquery.com/unbind/) - Does not support namespaces
+ * - [`val()`](http://api.jquery.com/val/)
+ * - [`wrap()`](http://api.jquery.com/wrap/)
+ *
+ * ## jQuery/jqLite Extras
+ * Angular also provides the following additional methods and events to both jQuery and jqLite:
+ *
+ * ### Events
+ * - `$destroy` - AngularJS intercepts all jqLite/jQuery's DOM destruction apis and fires this event
+ *    on all DOM nodes being removed.  This can be used to clean up any 3rd party bindings to the DOM
+ *    element before it is removed.
+ *
+ * ### Methods
+ * - `controller(name)` - retrieves the controller of the current element or its parent. By default
+ *   retrieves controller associated with the `ngController` directive. If `name` is provided as
+ *   camelCase directive name, then the controller for this directive will be retrieved (e.g.
+ *   `'ngModel'`).
+ * - `injector()` - retrieves the injector of the current element or its parent.
+ * - `scope()` - retrieves the {@link ng.$rootScope.Scope scope} of the current
+ *   element or its parent. Requires {@link guide/production#disabling-debug-data Debug Data} to
+ *   be enabled.
+ * - `isolateScope()` - retrieves an isolate {@link ng.$rootScope.Scope scope} if one is attached directly to the
+ *   current element. This getter should be used only on elements that contain a directive which starts a new isolate
+ *   scope. Calling `scope()` on this element always returns the original non-isolate scope.
+ *   Requires {@link guide/production#disabling-debug-data Debug Data} to be enabled.
+ * - `inheritedData()` - same as `data()`, but walks up the DOM until a value is found or the top
+ *   parent element is reached.
+ *
+ * @param {string|DOMElement} element HTML string or DOMElement to be wrapped into jQuery.
+ * @returns {Object} jQuery object.
+ */
+
+JQLite.expando = 'ng339';
+
+var jqCache = JQLite.cache = {},
+    jqId = 1,
+    addEventListenerFn = function(element, type, fn) {
+      element.addEventListener(type, fn, false);
+    },
+    removeEventListenerFn = function(element, type, fn) {
+      element.removeEventListener(type, fn, false);
+    };
+
+/*
+ * !!! This is an undocumented "private" function !!!
+ */
+JQLite._data = function(node) {
+  //jQuery always returns an object on cache miss
+  return this.cache[node[this.expando]] || {};
+};
+
+function jqNextId() { return ++jqId; }
+
+
+var SPECIAL_CHARS_REGEXP = /([\:\-\_]+(.))/g;
+var MOZ_HACK_REGEXP = /^moz([A-Z])/;
+var MOUSE_EVENT_MAP= { mouseleave: "mouseout", mouseenter: "mouseover"};
+var jqLiteMinErr = minErr('jqLite');
+
+/**
+ * Converts snake_case to camelCase.
+ * Also there is special case for Moz prefix starting with upper case letter.
+ * @param name Name to normalize
+ */
+function camelCase(name) {
+  return name.
+    replace(SPECIAL_CHARS_REGEXP, function(_, separator, letter, offset) {
+      return offset ? letter.toUpperCase() : letter;
+    }).
+    replace(MOZ_HACK_REGEXP, 'Moz$1');
+}
+
+var SINGLE_TAG_REGEXP = /^<(\w+)\s*\/?>(?:<\/\1>|)$/;
+var HTML_REGEXP = /<|&#?\w+;/;
+var TAG_NAME_REGEXP = /<([\w:]+)/;
+var XHTML_TAG_REGEXP = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi;
+
+var wrapMap = {
+  'option': [1, '<select multiple="multiple">', '</select>'],
+
+  'thead': [1, '<table>', '</table>'],
+  'col': [2, '<table><colgroup>', '</colgroup></table>'],
+  'tr': [2, '<table><tbody>', '</tbody></table>'],
+  'td': [3, '<table><tbody><tr>', '</tr></tbody></table>'],
+  '_default': [0, "", ""]
+};
+
+wrapMap.optgroup = wrapMap.option;
+wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
+wrapMap.th = wrapMap.td;
+
+
+function jqLiteIsTextNode(html) {
+  return !HTML_REGEXP.test(html);
+}
+
+function jqLiteAcceptsData(node) {
+  // The window object can accept data but has no nodeType
+  // Otherwise we are only interested in elements (1) and documents (9)
+  var nodeType = node.nodeType;
+  return nodeType === NODE_TYPE_ELEMENT || !nodeType || nodeType === NODE_TYPE_DOCUMENT;
+}
+
+function jqLiteBuildFragment(html, context) {
+  var tmp, tag, wrap,
+      fragment = context.createDocumentFragment(),
+      nodes = [], i;
+
+  if (jqLiteIsTextNode(html)) {
+    // Convert non-html into a text node
+    nodes.push(context.createTextNode(html));
+  } else {
+    // Convert html into DOM nodes
+    tmp = tmp || fragment.appendChild(context.createElement("div"));
+    tag = (TAG_NAME_REGEXP.exec(html) || ["", ""])[1].toLowerCase();
+    wrap = wrapMap[tag] || wrapMap._default;
+    tmp.innerHTML = wrap[1] + html.replace(XHTML_TAG_REGEXP, "<$1></$2>") + wrap[2];
+
+    // Descend through wrappers to the right content
+    i = wrap[0];
+    while (i--) {
+      tmp = tmp.lastChild;
+    }
+
+    nodes = concat(nodes, tmp.childNodes);
+
+    tmp = fragment.firstChild;
+    tmp.textContent = "";
+  }
+
+  // Remove wrapper from fragment
+  fragment.textContent = "";
+  fragment.innerHTML = ""; // Clear inner HTML
+  forEach(nodes, function(node) {
+    fragment.appendChild(node);
+  });
+
+  return fragment;
+}
+
+function jqLiteParseHTML(html, context) {
+  context = context || document;
+  var parsed;
+
+  if ((parsed = SINGLE_TAG_REGEXP.exec(html))) {
+    return [context.createElement(parsed[1])];
+  }
+
+  if ((parsed = jqLiteBuildFragment(html, context))) {
+    return parsed.childNodes;
+  }
+
+  return [];
+}
+
+/////////////////////////////////////////////
+function JQLite(element) {
+  if (element instanceof JQLite) {
+    return element;
+  }
+
+  var argIsString;
+
+  if (isString(element)) {
+    element = trim(element);
+    argIsString = true;
+  }
+  if (!(this instanceof JQLite)) {
+    if (argIsString && element.charAt(0) != '<') {
+      throw jqLiteMinErr('nosel', 'Looking up elements via selectors is not supported by jqLite! See: http://docs.angularjs.org/api/angular.element');
+    }
+    return new JQLite(element);
+  }
+
+  if (argIsString) {
+    jqLiteAddNodes(this, jqLiteParseHTML(element));
+  } else {
+    jqLiteAddNodes(this, element);
+  }
+}
+
+function jqLiteClone(element) {
+  return element.cloneNode(true);
+}
+
+function jqLiteDealoc(element, onlyDescendants) {
+  if (!onlyDescendants) jqLiteRemoveData(element);
+
+  if (element.querySelectorAll) {
+    var descendants = element.querySelectorAll('*');
+    for (var i = 0, l = descendants.length; i < l; i++) {
+      jqLiteRemoveData(descendants[i]);
+    }
+  }
+}
+
+function jqLiteOff(element, type, fn, unsupported) {
+  if (isDefined(unsupported)) throw jqLiteMinErr('offargs', 'jqLite#off() does not support the `selector` argument');
+
+  var expandoStore = jqLiteExpandoStore(element);
+  var events = expandoStore && expandoStore.events;
+  var handle = expandoStore && expandoStore.handle;
+
+  if (!handle) return; //no listeners registered
+
+  if (!type) {
+    for (type in events) {
+      if (type !== '$destroy') {
+        removeEventListenerFn(element, type, handle);
+      }
+      delete events[type];
+    }
+  } else {
+    forEach(type.split(' '), function(type) {
+      if (isDefined(fn)) {
+        var listenerFns = events[type];
+        arrayRemove(listenerFns || [], fn);
+        if (listenerFns && listenerFns.length > 0) {
+          return;
+        }
+      }
+
+      removeEventListenerFn(element, type, handle);
+      delete events[type];
+    });
+  }
+}
+
+function jqLiteRemoveData(element, name) {
+  var expandoId = element.ng339;
+  var expandoStore = expandoId && jqCache[expandoId];
+
+  if (expandoStore) {
+    if (name) {
+      delete expandoStore.data[name];
+      return;
+    }
+
+    if (expandoStore.handle) {
+      if (expandoStore.events.$destroy) {
+        expandoStore.handle({}, '$destroy');
+      }
+      jqLiteOff(element);
+    }
+    delete jqCache[expandoId];
+    element.ng339 = undefined; // don't delete DOM expandos. IE and Chrome don't like it
+  }
+}
+
+
+function jqLiteExpandoStore(element, createIfNecessary) {
+  var expandoId = element.ng339,
+      expandoStore = expandoId && jqCache[expandoId];
+
+  if (createIfNecessary && !expandoStore) {
+    element.ng339 = expandoId = jqNextId();
+    expandoStore = jqCache[expandoId] = {events: {}, data: {}, handle: undefined};
+  }
+
+  return expandoStore;
+}
+
+
+function jqLiteData(element, key, value) {
+  if (jqLiteAcceptsData(element)) {
+
+    var isSimpleSetter = isDefined(value);
+    var isSimpleGetter = !isSimpleSetter && key && !isObject(key);
+    var massGetter = !key;
+    var expandoStore = jqLiteExpandoStore(element, !isSimpleGetter);
+    var data = expandoStore && expandoStore.data;
+
+    if (isSimpleSetter) { // data('key', value)
+      data[key] = value;
+    } else {
+      if (massGetter) {  // data()
+        return data;
+      } else {
+        if (isSimpleGetter) { // data('key')
+          // don't force creation of expandoStore if it doesn't exist yet
+          return data && data[key];
+        } else { // mass-setter: data({key1: val1, key2: val2})
+          extend(data, key);
+        }
+      }
+    }
+  }
+}
+
+function jqLiteHasClass(element, selector) {
+  if (!element.getAttribute) return false;
+  return ((" " + (element.getAttribute('class') || '') + " ").replace(/[\n\t]/g, " ").
+      indexOf(" " + selector + " ") > -1);
+}
+
+function jqLiteRemoveClass(element, cssClasses) {
+  if (cssClasses && element.setAttribute) {
+    forEach(cssClasses.split(' '), function(cssClass) {
+      element.setAttribute('class', trim(
+          (" " + (element.getAttribute('class') || '') + " ")
+          .replace(/[\n\t]/g, " ")
+          .replace(" " + trim(cssClass) + " ", " "))
+      );
+    });
+  }
+}
+
+function jqLiteAddClass(element, cssClasses) {
+  if (cssClasses && element.setAttribute) {
+    var existingClasses = (' ' + (element.getAttribute('class') || '') + ' ')
+                            .replace(/[\n\t]/g, " ");
+
+    forEach(cssClasses.split(' '), function(cssClass) {
+      cssClass = trim(cssClass);
+      if (existingClasses.indexOf(' ' + cssClass + ' ') === -1) {
+        existingClasses += cssClass + ' ';
+      }
+    });
+
+    element.setAttribute('class', trim(existingClasses));
+  }
+}
+
+
+function jqLiteAddNodes(root, elements) {
+  // THIS CODE IS VERY HOT. Don't make changes without benchmarking.
+
+  if (elements) {
+
+    // if a Node (the most common case)
+    if (elements.nodeType) {
+      root[root.length++] = elements;
+    } else {
+      var length = elements.length;
+
+      // if an Array or NodeList and not a Window
+      if (typeof length === 'number' && elements.window !== elements) {
+        if (length) {
+          for (var i = 0; i < length; i++) {
+            root[root.length++] = elements[i];
+          }
+        }
+      } else {
+        root[root.length++] = elements;
+      }
+    }
+  }
+}
+
+
+function jqLiteController(element, name) {
+  return jqLiteInheritedData(element, '$' + (name || 'ngController') + 'Controller');
+}
+
+function jqLiteInheritedData(element, name, value) {
+  // if element is the document object work with the html element instead
+  // this makes $(document).scope() possible
+  if (element.nodeType == NODE_TYPE_DOCUMENT) {
+    element = element.documentElement;
+  }
+  var names = isArray(name) ? name : [name];
+
+  while (element) {
+    for (var i = 0, ii = names.length; i < ii; i++) {
+      if ((value = jqLite.data(element, names[i])) !== undefined) return value;
+    }
+
+    // If dealing with a document fragment node with a host element, and no parent, use the host
+    // element as the parent. This enables directives within a Shadow DOM or polyfilled Shadow DOM
+    // to lookup parent controllers.
+    element = element.parentNode || (element.nodeType === NODE_TYPE_DOCUMENT_FRAGMENT && element.host);
+  }
+}
+
+function jqLiteEmpty(element) {
+  jqLiteDealoc(element, true);
+  while (element.firstChild) {
+    element.removeChild(element.firstChild);
+  }
+}
+
+function jqLiteRemove(element, keepData) {
+  if (!keepData) jqLiteDealoc(element);
+  var parent = element.parentNode;
+  if (parent) parent.removeChild(element);
+}
+
+
+function jqLiteDocumentLoaded(action, win) {
+  win = win || window;
+  if (win.document.readyState === 'complete') {
+    // Force the action to be run async for consistent behaviour
+    // from the action's point of view
+    // i.e. it will definitely not be in a $apply
+    win.setTimeout(action);
+  } else {
+    // No need to unbind this handler as load is only ever called once
+    jqLite(win).on('load', action);
+  }
+}
+
+//////////////////////////////////////////
+// Functions which are declared directly.
+//////////////////////////////////////////
+var JQLitePrototype = JQLite.prototype = {
+  ready: function(fn) {
+    var fired = false;
+
+    function trigger() {
+      if (fired) return;
+      fired = true;
+      fn();
+    }
+
+    // check if document is already loaded
+    if (document.readyState === 'complete') {
+      setTimeout(trigger);
+    } else {
+      this.on('DOMContentLoaded', trigger); // works for modern browsers and IE9
+      // we can not use jqLite since we are not done loading and jQuery could be loaded later.
+      // jshint -W064
+      JQLite(window).on('load', trigger); // fallback to window.onload for others
+      // jshint +W064
+    }
+  },
+  toString: function() {
+    var value = [];
+    forEach(this, function(e) { value.push('' + e);});
+    return '[' + value.join(', ') + ']';
+  },
+
+  eq: function(index) {
+      return (index >= 0) ? jqLite(this[index]) : jqLite(this[this.length + index]);
+  },
+
+  length: 0,
+  push: push,
+  sort: [].sort,
+  splice: [].splice
+};
+
+//////////////////////////////////////////
+// Functions iterating getter/setters.
+// these functions return self on setter and
+// value on get.
+//////////////////////////////////////////
+var BOOLEAN_ATTR = {};
+forEach('multiple,selected,checked,disabled,readOnly,required,open'.split(','), function(value) {
+  BOOLEAN_ATTR[lowercase(value)] = value;
+});
+var BOOLEAN_ELEMENTS = {};
+forEach('input,select,option,textarea,button,form,details'.split(','), function(value) {
+  BOOLEAN_ELEMENTS[value] = true;
+});
+var ALIASED_ATTR = {
+  'ngMinlength': 'minlength',
+  'ngMaxlength': 'maxlength',
+  'ngMin': 'min',
+  'ngMax': 'max',
+  'ngPattern': 'pattern'
+};
+
+function getBooleanAttrName(element, name) {
+  // check dom last since we will most likely fail on name
+  var booleanAttr = BOOLEAN_ATTR[name.toLowerCase()];
+
+  // booleanAttr is here twice to minimize DOM access
+  return booleanAttr && BOOLEAN_ELEMENTS[nodeName_(element)] && booleanAttr;
+}
+
+function getAliasedAttrName(element, name) {
+  var nodeName = element.nodeName;
+  return (nodeName === 'INPUT' || nodeName === 'TEXTAREA') && ALIASED_ATTR[name];
+}
+
+forEach({
+  data: jqLiteData,
+  removeData: jqLiteRemoveData
+}, function(fn, name) {
+  JQLite[name] = fn;
+});
+
+forEach({
+  data: jqLiteData,
+  inheritedData: jqLiteInheritedData,
+
+  scope: function(element) {
+    // Can't use jqLiteData here directly so we stay compatible with jQuery!
+    return jqLite.data(element, '$scope') || jqLiteInheritedData(element.parentNode || element, ['$isolateScope', '$scope']);
+  },
+
+  isolateScope: function(element) {
+    // Can't use jqLiteData here directly so we stay compatible with jQuery!
+    return jqLite.data(element, '$isolateScope') || jqLite.data(element, '$isolateScopeNoTemplate');
+  },
+
+  controller: jqLiteController,
+
+  injector: function(element) {
+    return jqLiteInheritedData(element, '$injector');
+  },
+
+  removeAttr: function(element, name) {
+    element.removeAttribute(name);
+  },
+
+  hasClass: jqLiteHasClass,
+
+  css: function(element, name, value) {
+    name = camelCase(name);
+
+    if (isDefined(value)) {
+      element.style[name] = value;
+    } else {
+      return element.style[name];
+    }
+  },
+
+  attr: function(element, name, value) {
+    var nodeType = element.nodeType;
+    if (nodeType === NODE_TYPE_TEXT || nodeType === NODE_TYPE_ATTRIBUTE || nodeType === NODE_TYPE_COMMENT) {
+      return;
+    }
+    var lowercasedName = lowercase(name);
+    if (BOOLEAN_ATTR[lowercasedName]) {
+      if (isDefined(value)) {
+        if (!!value) {
+          element[name] = true;
+          element.setAttribute(name, lowercasedName);
+        } else {
+          element[name] = false;
+          element.removeAttribute(lowercasedName);
+        }
+      } else {
+        return (element[name] ||
+                 (element.attributes.getNamedItem(name) || noop).specified)
+               ? lowercasedName
+               : undefined;
+      }
+    } else if (isDefined(value)) {
+      element.setAttribute(name, value);
+    } else if (element.getAttribute) {
+      // the extra argument "2" is to get the right thing for a.href in IE, see jQuery code
+      // some elements (e.g. Document) don't have get attribute, so return undefined
+      var ret = element.getAttribute(name, 2);
+      // normalize non-existing attributes to undefined (as jQuery)
+      return ret === null ? undefined : ret;
+    }
+  },
+
+  prop: function(element, name, value) {
+    if (isDefined(value)) {
+      element[name] = value;
+    } else {
+      return element[name];
+    }
+  },
+
+  text: (function() {
+    getText.$dv = '';
+    return getText;
+
+    function getText(element, value) {
+      if (isUndefined(value)) {
+        var nodeType = element.nodeType;
+        return (nodeType === NODE_TYPE_ELEMENT || nodeType === NODE_TYPE_TEXT) ? element.textContent : '';
+      }
+      element.textContent = value;
+    }
+  })(),
+
+  val: function(element, value) {
+    if (isUndefined(value)) {
+      if (element.multiple && nodeName_(element) === 'select') {
+        var result = [];
+        forEach(element.options, function(option) {
+          if (option.selected) {
+            result.push(option.value || option.text);
+          }
+        });
+        return result.length === 0 ? null : result;
+      }
+      return element.value;
+    }
+    element.value = value;
+  },
+
+  html: function(element, value) {
+    if (isUndefined(value)) {
+      return element.innerHTML;
+    }
+    jqLiteDealoc(element, true);
+    element.innerHTML = value;
+  },
+
+  empty: jqLiteEmpty
+}, function(fn, name) {
+  /**
+   * Properties: writes return selection, reads return first value
+   */
+  JQLite.prototype[name] = function(arg1, arg2) {
+    var i, key;
+    var nodeCount = this.length;
+
+    // jqLiteHasClass has only two arguments, but is a getter-only fn, so we need to special-case it
+    // in a way that survives minification.
+    // jqLiteEmpty takes no arguments but is a setter.
+    if (fn !== jqLiteEmpty &&
+        (((fn.length == 2 && (fn !== jqLiteHasClass && fn !== jqLiteController)) ? arg1 : arg2) === undefined)) {
+      if (isObject(arg1)) {
+
+        // we are a write, but the object properties are the key/values
+        for (i = 0; i < nodeCount; i++) {
+          if (fn === jqLiteData) {
+            // data() takes the whole object in jQuery
+            fn(this[i], arg1);
+          } else {
+            for (key in arg1) {
+              fn(this[i], key, arg1[key]);
+            }
+          }
+        }
+        // return self for chaining
+        return this;
+      } else {
+        // we are a read, so read the first child.
+        // TODO: do we still need this?
+        var value = fn.$dv;
+        // Only if we have $dv do we iterate over all, otherwise it is just the first element.
+        var jj = (value === undefined) ? Math.min(nodeCount, 1) : nodeCount;
+        for (var j = 0; j < jj; j++) {
+          var nodeValue = fn(this[j], arg1, arg2);
+          value = value ? value + nodeValue : nodeValue;
+        }
+        return value;
+      }
+    } else {
+      // we are a write, so apply to all children
+      for (i = 0; i < nodeCount; i++) {
+        fn(this[i], arg1, arg2);
+      }
+      // return self for chaining
+      return this;
+    }
+  };
+});
+
+function createEventHandler(element, events) {
+  var eventHandler = function(event, type) {
+    // jQuery specific api
+    event.isDefaultPrevented = function() {
+      return event.defaultPrevented;
+    };
+
+    var eventFns = events[type || event.type];
+    var eventFnsLength = eventFns ? eventFns.length : 0;
+
+    if (!eventFnsLength) return;
+
+    if (isUndefined(event.immediatePropagationStopped)) {
+      var originalStopImmediatePropagation = event.stopImmediatePropagation;
+      event.stopImmediatePropagation = function() {
+        event.immediatePropagationStopped = true;
+
+        if (event.stopPropagation) {
+          event.stopPropagation();
+        }
+
+        if (originalStopImmediatePropagation) {
+          originalStopImmediatePropagation.call(event);
+        }
+      };
+    }
+
+    event.isImmediatePropagationStopped = function() {
+      return event.immediatePropagationStopped === true;
+    };
+
+    // Copy event handlers in case event handlers array is modified during execution.
+    if ((eventFnsLength > 1)) {
+      eventFns = shallowCopy(eventFns);
+    }
+
+    for (var i = 0; i < eventFnsLength; i++) {
+      if (!event.isImmediatePropagationStopped()) {
+        eventFns[i].call(element, event);
+      }
+    }
+  };
+
+  // TODO: this is a hack for angularMocks/clearDataCache that makes it possible to deregister all
+  //       events on `element`
+  eventHandler.elem = element;
+  return eventHandler;
+}
+
+//////////////////////////////////////////
+// Functions iterating traversal.
+// These functions chain results into a single
+// selector.
+//////////////////////////////////////////
+forEach({
+  removeData: jqLiteRemoveData,
+
+  on: function jqLiteOn(element, type, fn, unsupported) {
+    if (isDefined(unsupported)) throw jqLiteMinErr('onargs', 'jqLite#on() does not support the `selector` or `eventData` parameters');
+
+    // Do not add event handlers to non-elements because they will not be cleaned up.
+    if (!jqLiteAcceptsData(element)) {
+      return;
+    }
+
+    var expandoStore = jqLiteExpandoStore(element, true);
+    var events = expandoStore.events;
+    var handle = expandoStore.handle;
+
+    if (!handle) {
+      handle = expandoStore.handle = createEventHandler(element, events);
+    }
+
+    // http://jsperf.com/string-indexof-vs-split
+    var types = type.indexOf(' ') >= 0 ? type.split(' ') : [type];
+    var i = types.length;
+
+    while (i--) {
+      type = types[i];
+      var eventFns = events[type];
+
+      if (!eventFns) {
+        events[type] = [];
+
+        if (type === 'mouseenter' || type === 'mouseleave') {
+          // Refer to jQuery's implementation of mouseenter & mouseleave
+          // Read about mouseenter and mouseleave:
+          // http://www.quirksmode.org/js/events_mouse.html#link8
+
+          jqLiteOn(element, MOUSE_EVENT_MAP[type], function(event) {
+            var target = this, related = event.relatedTarget;
+            // For mousenter/leave call the handler if related is outside the target.
+            // NB: No relatedTarget if the mouse left/entered the browser window
+            if (!related || (related !== target && !target.contains(related))) {
+              handle(event, type);
+            }
+          });
+
+        } else {
+          if (type !== '$destroy') {
+            addEventListenerFn(element, type, handle);
+          }
+        }
+        eventFns = events[type];
+      }
+      eventFns.push(fn);
+    }
+  },
+
+  off: jqLiteOff,
+
+  one: function(element, type, fn) {
+    element = jqLite(element);
+
+    //add the listener twice so that when it is called
+    //you can remove the original function and still be
+    //able to call element.off(ev, fn) normally
+    element.on(type, function onFn() {
+      element.off(type, fn);
+      element.off(type, onFn);
+    });
+    element.on(type, fn);
+  },
+
+  replaceWith: function(element, replaceNode) {
+    var index, parent = element.parentNode;
+    jqLiteDealoc(element);
+    forEach(new JQLite(replaceNode), function(node) {
+      if (index) {
+        parent.insertBefore(node, index.nextSibling);
+      } else {
+        parent.replaceChild(node, element);
+      }
+      index = node;
+    });
+  },
+
+  children: function(element) {
+    var children = [];
+    forEach(element.childNodes, function(element) {
+      if (element.nodeType === NODE_TYPE_ELEMENT)
+        children.push(element);
+    });
+    return children;
+  },
+
+  contents: function(element) {
+    return element.contentDocument || element.childNodes || [];
+  },
+
+  append: function(element, node) {
+    var nodeType = element.nodeType;
+    if (nodeType !== NODE_TYPE_ELEMENT && nodeType !== NODE_TYPE_DOCUMENT_FRAGMENT) return;
+
+    node = new JQLite(node);
+
+    for (var i = 0, ii = node.length; i < ii; i++) {
+      var child = node[i];
+      element.appendChild(child);
+    }
+  },
+
+  prepend: function(element, node) {
+    if (element.nodeType === NODE_TYPE_ELEMENT) {
+      var index = element.firstChild;
+      forEach(new JQLite(node), function(child) {
+        element.insertBefore(child, index);
+      });
+    }
+  },
+
+  wrap: function(element, wrapNode) {
+    wrapNode = jqLite(wrapNode).eq(0).clone()[0];
+    var parent = element.parentNode;
+    if (parent) {
+      parent.replaceChild(wrapNode, element);
+    }
+    wrapNode.appendChild(element);
+  },
+
+  remove: jqLiteRemove,
+
+  detach: function(element) {
+    jqLiteRemove(element, true);
+  },
+
+  after: function(element, newElement) {
+    var index = element, parent = element.parentNode;
+    newElement = new JQLite(newElement);
+
+    for (var i = 0, ii = newElement.length; i < ii; i++) {
+      var node = newElement[i];
+      parent.insertBefore(node, index.nextSibling);
+      index = node;
+    }
+  },
+
+  addClass: jqLiteAddClass,
+  removeClass: jqLiteRemoveClass,
+
+  toggleClass: function(element, selector, condition) {
+    if (selector) {
+      forEach(selector.split(' '), function(className) {
+        var classCondition = condition;
+        if (isUndefined(classCondition)) {
+          classCondition = !jqLiteHasClass(element, className);
+        }
+        (classCondition ? jqLiteAddClass : jqLiteRemoveClass)(element, className);
+      });
+    }
+  },
+
+  parent: function(element) {
+    var parent = element.parentNode;
+    return parent && parent.nodeType !== NODE_TYPE_DOCUMENT_FRAGMENT ? parent : null;
+  },
+
+  next: function(element) {
+    return element.nextElementSibling;
+  },
+
+  find: function(element, selector) {
+    if (element.getElementsByTagName) {
+      return element.getElementsByTagName(selector);
+    } else {
+      return [];
+    }
+  },
+
+  clone: jqLiteClone,
+
+  triggerHandler: function(element, event, extraParameters) {
+
+    var dummyEvent, eventFnsCopy, handlerArgs;
+    var eventName = event.type || event;
+    var expandoStore = jqLiteExpandoStore(element);
+    var events = expandoStore && expandoStore.events;
+    var eventFns = events && events[eventName];
+
+    if (eventFns) {
+      // Create a dummy event to pass to the handlers
+      dummyEvent = {
+        preventDefault: function() { this.defaultPrevented = true; },
+        isDefaultPrevented: function() { return this.defaultPrevented === true; },
+        stopImmediatePropagation: function() { this.immediatePropagationStopped = true; },
+        isImmediatePropagationStopped: function() { return this.immediatePropagationStopped === true; },
+        stopPropagation: noop,
+        type: eventName,
+        target: element
+      };
+
+      // If a custom event was provided then extend our dummy event with it
+      if (event.type) {
+        dummyEvent = extend(dummyEvent, event);
+      }
+
+      // Copy event handlers in case event handlers array is modified during execution.
+      eventFnsCopy = shallowCopy(eventFns);
+      handlerArgs = extraParameters ? [dummyEvent].concat(extraParameters) : [dummyEvent];
+
+      forEach(eventFnsCopy, function(fn) {
+        if (!dummyEvent.isImmediatePropagationStopped()) {
+          fn.apply(element, handlerArgs);
+        }
+      });
+    }
+  }
+}, function(fn, name) {
+  /**
+   * chaining functions
+   */
+  JQLite.prototype[name] = function(arg1, arg2, arg3) {
+    var value;
+
+    for (var i = 0, ii = this.length; i < ii; i++) {
+      if (isUndefined(value)) {
+        value = fn(this[i], arg1, arg2, arg3);
+        if (isDefined(value)) {
+          // any function which returns a value needs to be wrapped
+          value = jqLite(value);
+        }
+      } else {
+        jqLiteAddNodes(value, fn(this[i], arg1, arg2, arg3));
+      }
+    }
+    return isDefined(value) ? value : this;
+  };
+
+  // bind legacy bind/unbind to on/off
+  JQLite.prototype.bind = JQLite.prototype.on;
+  JQLite.prototype.unbind = JQLite.prototype.off;
+});
+
+
+// Provider for private $$jqLite service
+function $$jqLiteProvider() {
+  this.$get = function $$jqLite() {
+    return extend(JQLite, {
+      hasClass: function(node, classes) {
+        if (node.attr) node = node[0];
+        return jqLiteHasClass(node, classes);
+      },
+      addClass: function(node, classes) {
+        if (node.attr) node = node[0];
+        return jqLiteAddClass(node, classes);
+      },
+      removeClass: function(node, classes) {
+        if (node.attr) node = node[0];
+        return jqLiteRemoveClass(node, classes);
+      }
+    });
+  };
+}
+
+/**
+ * Computes a hash of an 'obj'.
+ * Hash of a:
+ *  string is string
+ *  number is number as string
+ *  object is either result of calling $$hashKey function on the object or uniquely generated id,
+ *         that is also assigned to the $$hashKey property of the object.
+ *
+ * @param obj
+ * @returns {string} hash string such that the same input will have the same hash string.
+ *         The resulting string key is in 'type:hashKey' format.
+ */
+function hashKey(obj, nextUidFn) {
+  var key = obj && obj.$$hashKey;
+
+  if (key) {
+    if (typeof key === 'function') {
+      key = obj.$$hashKey();
+    }
+    return key;
+  }
+
+  var objType = typeof obj;
+  if (objType == 'function' || (objType == 'object' && obj !== null)) {
+    key = obj.$$hashKey = objType + ':' + (nextUidFn || nextUid)();
+  } else {
+    key = objType + ':' + obj;
+  }
+
+  return key;
+}
+
+/**
+ * HashMap which can use objects as keys
+ */
+function HashMap(array, isolatedUid) {
+  if (isolatedUid) {
+    var uid = 0;
+    this.nextUid = function() {
+      return ++uid;
+    };
+  }
+  forEach(array, this.put, this);
+}
+HashMap.prototype = {
+  /**
+   * Store key value pair
+   * @param key key to store can be any type
+   * @param value value to store can be any type
+   */
+  put: function(key, value) {
+    this[hashKey(key, this.nextUid)] = value;
+  },
+
+  /**
+   * @param key
+   * @returns {Object} the value for the key
+   */
+  get: function(key) {
+    return this[hashKey(key, this.nextUid)];
+  },
+
+  /**
+   * Remove the key/value pair
+   * @param key
+   */
+  remove: function(key) {
+    var value = this[key = hashKey(key, this.nextUid)];
+    delete this[key];
+    return value;
+  }
+};
+
+/**
+ * @ngdoc function
+ * @module ng
+ * @name angular.injector
+ * @kind function
+ *
+ * @description
+ * Creates an injector object that can be used for retrieving services as well as for
+ * dependency injection (see {@link guide/di dependency injection}).
+ *
+ * @param {Array.<string|Function>} modules A list of module functions or their aliases. See
+ *     {@link angular.module}. The `ng` module must be explicitly added.
+ * @param {boolean=} [strictDi=false] Whether the injector should be in strict mode, which
+ *     disallows argument name annotation inference.
+ * @returns {injector} Injector object. See {@link auto.$injector $injector}.
+ *
+ * @example
+ * Typical usage
+ * ```js
+ *   // create an injector
+ *   var $injector = angular.injector(['ng']);
+ *
+ *   // use the injector to kick off your application
+ *   // use the type inference to auto inject arguments, or use implicit injection
+ *   $injector.invoke(function($rootScope, $compile, $document) {
+ *     $compile($document)($rootScope);
+ *     $rootScope.$digest();
+ *   });
+ * ```
+ *
+ * Sometimes you want to get access to the injector of a currently running Angular app
+ * from outside Angular. Perhaps, you want to inject and compile some markup after the
+ * application has been bootstrapped. You can do this using the extra `injector()` added
+ * to JQuery/jqLite elements. See {@link angular.element}.
+ *
+ * *This is fairly rare but could be the case if a third party library is injecting the
+ * markup.*
+ *
+ * In the following example a new block of HTML containing a `ng-controller`
+ * directive is added to the end of the document body by JQuery. We then compile and link
+ * it into the current AngularJS scope.
+ *
+ * ```js
+ * var $div = $('<div ng-controller="MyCtrl">{{content.label}}</div>');
+ * $(document.body).append($div);
+ *
+ * angular.element(document).injector().invoke(function($compile) {
+ *   var scope = angular.element($div).scope();
+ *   $compile($div)(scope);
+ * });
+ * ```
+ */
+
+
+/**
+ * @ngdoc module
+ * @name auto
+ * @description
+ *
+ * Implicit module which gets automatically added to each {@link auto.$injector $injector}.
+ */
+
+var FN_ARGS = /^function\s*[^\(]*\(\s*([^\)]*)\)/m;
+var FN_ARG_SPLIT = /,/;
+var FN_ARG = /^\s*(_?)(\S+?)\1\s*$/;
+var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
+var $injectorMinErr = minErr('$injector');
+
+function anonFn(fn) {
+  // For anonymous functions, showing at the very least the function signature can help in
+  // debugging.
+  var fnText = fn.toString().replace(STRIP_COMMENTS, ''),
+      args = fnText.match(FN_ARGS);
+  if (args) {
+    return 'function(' + (args[1] || '').replace(/[\s\r\n]+/, ' ') + ')';
+  }
+  return 'fn';
+}
+
+function annotate(fn, strictDi, name) {
+  var $inject,
+      fnText,
+      argDecl,
+      last;
+
+  if (typeof fn === 'function') {
+    if (!($inject = fn.$inject)) {
+      $inject = [];
+      if (fn.length) {
+        if (strictDi) {
+          if (!isString(name) || !name) {
+            name = fn.name || anonFn(fn);
+          }
+          throw $injectorMinErr('strictdi',
+            '{0} is not using explicit annotation and cannot be invoked in strict mode', name);
+        }
+        fnText = fn.toString().replace(STRIP_COMMENTS, '');
+        argDecl = fnText.match(FN_ARGS);
+        forEach(argDecl[1].split(FN_ARG_SPLIT), function(arg) {
+          arg.replace(FN_ARG, function(all, underscore, name) {
+            $inject.push(name);
+          });
+        });
+      }
+      fn.$inject = $inject;
+    }
+  } else if (isArray(fn)) {
+    last = fn.length - 1;
+    assertArgFn(fn[last], 'fn');
+    $inject = fn.slice(0, last);
+  } else {
+    assertArgFn(fn, 'fn', true);
+  }
+  return $inject;
+}
+
+///////////////////////////////////////
+
+/**
+ * @ngdoc service
+ * @name $injector
+ *
+ * @description
+ *
+ * `$injector` is used to retrieve object instances as defined by
+ * {@link auto.$provide provider}, instantiate types, invoke methods,
+ * and load modules.
+ *
+ * The following always holds true:
+ *
+ * ```js
+ *   var $injector = angular.injector();
+ *   expect($injector.get('$injector')).toBe($injector);
+ *   expect($injector.invoke(function($injector) {
+ *     return $injector;
+ *   })).toBe($injector);
+ * ```
+ *
+ * # Injection Function Annotation
+ *
+ * JavaScript does not have annotations, and annotations are needed for dependency injection. The
+ * following are all valid ways of annotating function with injection arguments and are equivalent.
+ *
+ * ```js
+ *   // inferred (only works if code not minified/obfuscated)
+ *   $injector.invoke(function(serviceA){});
+ *
+ *   // annotated
+ *   function explicit(serviceA) {};
+ *   explicit.$inject = ['serviceA'];
+ *   $injector.invoke(explicit);
+ *
+ *   // inline
+ *   $injector.invoke(['serviceA', function(serviceA){}]);
+ * ```
+ *
+ * ## Inference
+ *
+ * In JavaScript calling `toString()` on a function returns the function definition. The definition
+ * can then be parsed and the function arguments can be extracted. This method of discovering
+ * annotations is disallowed when the injector is in strict mode.
+ * *NOTE:* This does not work with minification, and obfuscation tools since these tools change the
+ * argument names.
+ *
+ * ## `$inject` Annotation
+ * By adding an `$inject` property onto a function the injection parameters can be specified.
+ *
+ * ## Inline
+ * As an array of injection names, where the last item in the array is the function to call.
+ */
+
+/**
+ * @ngdoc method
+ * @name $injector#get
+ *
+ * @description
+ * Return an instance of the service.
+ *
+ * @param {string} name The name of the instance to retrieve.
+ * @param {string=} caller An optional string to provide the origin of the function call for error messages.
+ * @return {*} The instance.
+ */
+
+/**
+ * @ngdoc method
+ * @name $injector#invoke
+ *
+ * @description
+ * Invoke the method and supply the method arguments from the `$injector`.
+ *
+ * @param {Function|Array.<string|Function>} fn The injectable function to invoke. Function parameters are
+ *   injected according to the {@link guide/di $inject Annotation} rules.
+ * @param {Object=} self The `this` for the invoked method.
+ * @param {Object=} locals Optional object. If preset then any argument names are read from this
+ *                         object first, before the `$injector` is consulted.
+ * @returns {*} the value returned by the invoked `fn` function.
+ */
+
+/**
+ * @ngdoc method
+ * @name $injector#has
+ *
+ * @description
+ * Allows the user to query if the particular service exists.
+ *
+ * @param {string} name Name of the service to query.
+ * @returns {boolean} `true` if injector has given service.
+ */
+
+/**
+ * @ngdoc method
+ * @name $injector#instantiate
+ * @description
+ * Create a new instance of JS type. The method takes a constructor function, invokes the new
+ * operator, and supplies all of the arguments to the constructor function as specified by the
+ * constructor annotation.
+ *
+ * @param {Function} Type Annotated constructor function.
+ * @param {Object=} locals Optional object. If preset then any argument names are read from this
+ * object first, before the `$injector` is consulted.
+ * @returns {Object} new instance of `Type`.
+ */
+
+/**
+ * @ngdoc method
+ * @name $injector#annotate
+ *
+ * @description
+ * Returns an array of service names which the function is requesting for injection. This API is
+ * used by the injector to determine which services need to be injected into the function when the
+ * function is invoked. There are three ways in which the function can be annotated with the needed
+ * dependencies.
+ *
+ * # Argument names
+ *
+ * The simplest form is to extract the dependencies from the arguments of the function. This is done
+ * by converting the function into a string using `toString()` method and extracting the argument
+ * names.
+ * ```js
+ *   // Given
+ *   function MyController($scope, $route) {
+ *     // ...
+ *   }
+ *
+ *   // Then
+ *   expect(injector.annotate(MyController)).toEqual(['$scope', '$route']);
+ * ```
+ *
+ * You can disallow this method by using strict injection mode.
+ *
+ * This method does not work with code minification / obfuscation. For this reason the following
+ * annotation strategies are supported.
+ *
+ * # The `$inject` property
+ *
+ * If a function has an `$inject` property and its value is an array of strings, then the strings
+ * represent names of services to be injected into the function.
+ * ```js
+ *   // Given
+ *   var MyController = function(obfuscatedScope, obfuscatedRoute) {
+ *     // ...
+ *   }
+ *   // Define function dependencies
+ *   MyController['$inject'] = ['$scope', '$route'];
+ *
+ *   // Then
+ *   expect(injector.annotate(MyController)).toEqual(['$scope', '$route']);
+ * ```
+ *
+ * # The array notation
+ *
+ * It is often desirable to inline Injected functions and that's when setting the `$inject` property
+ * is very inconvenient. In these situations using the array notation to specify the dependencies in
+ * a way that survives minification is a better choice:
+ *
+ * ```js
+ *   // We wish to write this (not minification / obfuscation safe)
+ *   injector.invoke(function($compile, $rootScope) {
+ *     // ...
+ *   });
+ *
+ *   // We are forced to write break inlining
+ *   var tmpFn = function(obfuscatedCompile, obfuscatedRootScope) {
+ *     // ...
+ *   };
+ *   tmpFn.$inject = ['$compile', '$rootScope'];
+ *   injector.invoke(tmpFn);
+ *
+ *   // To better support inline function the inline annotation is supported
+ *   injector.invoke(['$compile', '$rootScope', function(obfCompile, obfRootScope) {
+ *     // ...
+ *   }]);
+ *
+ *   // Therefore
+ *   expect(injector.annotate(
+ *      ['$compile', '$rootScope', function(obfus_$compile, obfus_$rootScope) {}])
+ *    ).toEqual(['$compile', '$rootScope']);
+ * ```
+ *
+ * @param {Function|Array.<string|Function>} fn Function for which dependent service names need to
+ * be retrieved as described above.
+ *
+ * @param {boolean=} [strictDi=false] Disallow argument name annotation inference.
+ *
+ * @returns {Array.<string>} The names of the services which the function requires.
+ */
+
+
+
+
+/**
+ * @ngdoc service
+ * @name $provide
+ *
+ * @description
+ *
+ * The {@link auto.$provide $provide} service has a number of methods for registering components
+ * with the {@link auto.$injector $injector}. Many of these functions are also exposed on
+ * {@link angular.Module}.
+ *
+ * An Angular **service** is a singleton object created by a **service factory**.  These **service
+ * factories** are functions which, in turn, are created by a **service provider**.
+ * The **service providers** are constructor functions. When instantiated they must contain a
+ * property called `$get`, which holds the **service factory** function.
+ *
+ * When you request a service, the {@link auto.$injector $injector} is responsible for finding the
+ * correct **service provider**, instantiating it and then calling its `$get` **service factory**
+ * function to get the instance of the **service**.
+ *
+ * Often services have no configuration options and there is no need to add methods to the service
+ * provider.  The provider will be no more than a constructor function with a `$get` property. For
+ * these cases the {@link auto.$provide $provide} service has additional helper methods to register
+ * services without specifying a provider.
+ *
+ * * {@link auto.$provide#provider provider(provider)} - registers a **service provider** with the
+ *     {@link auto.$injector $injector}
+ * * {@link auto.$provide#constant constant(obj)} - registers a value/object that can be accessed by
+ *     providers and services.
+ * * {@link auto.$provide#value value(obj)} - registers a value/object that can only be accessed by
+ *     services, not providers.
+ * * {@link auto.$provide#factory factory(fn)} - registers a service **factory function**, `fn`,
+ *     that will be wrapped in a **service provider** object, whose `$get` property will contain the
+ *     given factory function.
+ * * {@link auto.$provide#service service(class)} - registers a **constructor function**, `class`
+ *     that will be wrapped in a **service provider** object, whose `$get` property will instantiate
+ *      a new object using the given constructor function.
+ *
+ * See the individual methods for more information and examples.
+ */
+
+/**
+ * @ngdoc method
+ * @name $provide#provider
+ * @description
+ *
+ * Register a **provider function** with the {@link auto.$injector $injector}. Provider functions
+ * are constructor functions, whose instances are responsible for "providing" a factory for a
+ * service.
+ *
+ * Service provider names start with the name of the service they provide followed by `Provider`.
+ * For example, the {@link ng.$log $log} service has a provider called
+ * {@link ng.$logProvider $logProvider}.
+ *
+ * Service provider objects can have additional methods which allow configuration of the provider
+ * and its service. Importantly, you can configure what kind of service is created by the `$get`
+ * method, or how that service will act. For example, the {@link ng.$logProvider $logProvider} has a
+ * method {@link ng.$logProvider#debugEnabled debugEnabled}
+ * which lets you specify whether the {@link ng.$log $log} service will log debug messages to the
+ * console or not.
+ *
+ * @param {string} name The name of the instance. NOTE: the provider will be available under `name +
+                        'Provider'` key.
+ * @param {(Object|function())} provider If the provider is:
+ *
+ *   - `Object`: then it should have a `$get` method. The `$get` method will be invoked using
+ *     {@link auto.$injector#invoke $injector.invoke()} when an instance needs to be created.
+ *   - `Constructor`: a new instance of the provider will be created using
+ *     {@link auto.$injector#instantiate $injector.instantiate()}, then treated as `object`.
+ *
+ * @returns {Object} registered provider instance
+
+ * @example
+ *
+ * The following example shows how to create a simple event tracking service and register it using
+ * {@link auto.$provide#provider $provide.provider()}.
+ *
+ * ```js
+ *  // Define the eventTracker provider
+ *  function EventTrackerProvider() {
+ *    var trackingUrl = '/track';
+ *
+ *    // A provider method for configuring where the tracked events should been saved
+ *    this.setTrackingUrl = function(url) {
+ *      trackingUrl = url;
+ *    };
+ *
+ *    // The service factory function
+ *    this.$get = ['$http', function($http) {
+ *      var trackedEvents = {};
+ *      return {
+ *        // Call this to track an event
+ *        event: function(event) {
+ *          var count = trackedEvents[event] || 0;
+ *          count += 1;
+ *          trackedEvents[event] = count;
+ *          return count;
+ *        },
+ *        // Call this to save the tracked events to the trackingUrl
+ *        save: function() {
+ *          $http.post(trackingUrl, trackedEvents);
+ *        }
+ *      };
+ *    }];
+ *  }
+ *
+ *  describe('eventTracker', function() {
+ *    var postSpy;
+ *
+ *    beforeEach(module(function($provide) {
+ *      // Register the eventTracker provider
+ *      $provide.provider('eventTracker', EventTrackerProvider);
+ *    }));
+ *
+ *    beforeEach(module(function(eventTrackerProvider) {
+ *      // Configure eventTracker provider
+ *      eventTrackerProvider.setTrackingUrl('/custom-track');
+ *    }));
+ *
+ *    it('tracks events', inject(function(eventTracker) {
+ *      expect(eventTracker.event('login')).toEqual(1);
+ *      expect(eventTracker.event('login')).toEqual(2);
+ *    }));
+ *
+ *    it('saves to the tracking url', inject(function(eventTracker, $http) {
+ *      postSpy = spyOn($http, 'post');
+ *      eventTracker.event('login');
+ *      eventTracker.save();
+ *      expect(postSpy).toHaveBeenCalled();
+ *      expect(postSpy.mostRecentCall.args[0]).not.toEqual('/track');
+ *      expect(postSpy.mostRecentCall.args[0]).toEqual('/custom-track');
+ *      expect(postSpy.mostRecentCall.args[1]).toEqual({ 'login': 1 });
+ *    }));
+ *  });
+ * ```
+ */
+
+/**
+ * @ngdoc method
+ * @name $provide#factory
+ * @description
+ *
+ * Register a **service factory**, which will be called to return the service instance.
+ * This is short for registering a service where its provider consists of only a `$get` property,
+ * which is the given service factory function.
+ * You should use {@link auto.$provide#factory $provide.factory(getFn)} if you do not need to
+ * configure your service in a provider.
+ *
+ * @param {string} name The name of the instance.
+ * @param {Function|Array.<string|Function>} $getFn The injectable $getFn for the instance creation.
+ *                      Internally this is a short hand for `$provide.provider(name, {$get: $getFn})`.
+ * @returns {Object} registered provider instance
+ *
+ * @example
+ * Here is an example of registering a service
+ * ```js
+ *   $provide.factory('ping', ['$http', function($http) {
+ *     return function ping() {
+ *       return $http.send('/ping');
+ *     };
+ *   }]);
+ * ```
+ * You would then inject and use this service like this:
+ * ```js
+ *   someModule.controller('Ctrl', ['ping', function(ping) {
+ *     ping();
+ *   }]);
+ * ```
+ */
+
+
+/**
+ * @ngdoc method
+ * @name $provide#service
+ * @description
+ *
+ * Register a **service constructor**, which will be invoked with `new` to create the service
+ * instance.
+ * This is short for registering a service where its provider's `$get` property is the service
+ * constructor function that will be used to instantiate the service instance.
+ *
+ * You should use {@link auto.$provide#service $provide.service(class)} if you define your service
+ * as a type/class.
+ *
+ * @param {string} name The name of the instance.
+ * @param {Function|Array.<string|Function>} constructor An injectable class (constructor function)
+ *     that will be instantiated.
+ * @returns {Object} registered provider instance
+ *
+ * @example
+ * Here is an example of registering a service using
+ * {@link auto.$provide#service $provide.service(class)}.
+ * ```js
+ *   var Ping = function($http) {
+ *     this.$http = $http;
+ *   };
+ *
+ *   Ping.$inject = ['$http'];
+ *
+ *   Ping.prototype.send = function() {
+ *     return this.$http.get('/ping');
+ *   };
+ *   $provide.service('ping', Ping);
+ * ```
+ * You would then inject and use this service like this:
+ * ```js
+ *   someModule.controller('Ctrl', ['ping', function(ping) {
+ *     ping.send();
+ *   }]);
+ * ```
+ */
+
+
+/**
+ * @ngdoc method
+ * @name $provide#value
+ * @description
+ *
+ * Register a **value service** with the {@link auto.$injector $injector}, such as a string, a
+ * number, an array, an object or a function.  This is short for registering a service where its
+ * provider's `$get` property is a factory function that takes no arguments and returns the **value
+ * service**.
+ *
+ * Value services are similar to constant services, except that they cannot be injected into a
+ * module configuration function (see {@link angular.Module#config}) but they can be overridden by
+ * an Angular
+ * {@link auto.$provide#decorator decorator}.
+ *
+ * @param {string} name The name of the instance.
+ * @param {*} value The value.
+ * @returns {Object} registered provider instance
+ *
+ * @example
+ * Here are some examples of creating value services.
+ * ```js
+ *   $provide.value('ADMIN_USER', 'admin');
+ *
+ *   $provide.value('RoleLookup', { admin: 0, writer: 1, reader: 2 });
+ *
+ *   $provide.value('halfOf', function(value) {
+ *     return value / 2;
+ *   });
+ * ```
+ */
+
+
+/**
+ * @ngdoc method
+ * @name $provide#constant
+ * @description
+ *
+ * Register a **constant service**, such as a string, a number, an array, an object or a function,
+ * with the {@link auto.$injector $injector}. Unlike {@link auto.$provide#value value} it can be
+ * injected into a module configuration function (see {@link angular.Module#config}) and it cannot
+ * be overridden by an Angular {@link auto.$provide#decorator decorator}.
+ *
+ * @param {string} name The name of the constant.
+ * @param {*} value The constant value.
+ * @returns {Object} registered instance
+ *
+ * @example
+ * Here a some examples of creating constants:
+ * ```js
+ *   $provide.constant('SHARD_HEIGHT', 306);
+ *
+ *   $provide.constant('MY_COLOURS', ['red', 'blue', 'grey']);
+ *
+ *   $provide.constant('double', function(value) {
+ *     return value * 2;
+ *   });
+ * ```
+ */
+
+
+/**
+ * @ngdoc method
+ * @name $provide#decorator
+ * @description
+ *
+ * Register a **service decorator** with the {@link auto.$injector $injector}. A service decorator
+ * intercepts the creation of a service, allowing it to override or modify the behaviour of the
+ * service. The object returned by the decorator may be the original service, or a new service
+ * object which replaces or wraps and delegates to the original service.
+ *
+ * @param {string} name The name of the service to decorate.
+ * @param {Function|Array.<string|Function>} decorator This function will be invoked when the service needs to be
+ *    instantiated and should return the decorated service instance. The function is called using
+ *    the {@link auto.$injector#invoke injector.invoke} method and is therefore fully injectable.
+ *    Local injection arguments:
+ *
+ *    * `$delegate` - The original service instance, which can be monkey patched, configured,
+ *      decorated or delegated to.
+ *
+ * @example
+ * Here we decorate the {@link ng.$log $log} service to convert warnings to errors by intercepting
+ * calls to {@link ng.$log#error $log.warn()}.
+ * ```js
+ *   $provide.decorator('$log', ['$delegate', function($delegate) {
+ *     $delegate.warn = $delegate.error;
+ *     return $delegate;
+ *   }]);
+ * ```
+ */
+
+
+function createInjector(modulesToLoad, strictDi) {
+  strictDi = (strictDi === true);
+  var INSTANTIATING = {},
+      providerSuffix = 'Provider',
+      path = [],
+      loadedModules = new HashMap([], true),
+      providerCache = {
+        $provide: {
+            provider: supportObject(provider),
+            factory: supportObject(factory),
+            service: supportObject(service),
+            value: supportObject(value),
+            constant: supportObject(constant),
+            decorator: decorator
+          }
+      },
+      providerInjector = (providerCache.$injector =
+          createInternalInjector(providerCache, function(serviceName, caller) {
+            if (angular.isString(caller)) {
+              path.push(caller);
+            }
+            throw $injectorMinErr('unpr', "Unknown provider: {0}", path.join(' <- '));
+          })),
+      instanceCache = {},
+      instanceInjector = (instanceCache.$injector =
+          createInternalInjector(instanceCache, function(serviceName, caller) {
+            var provider = providerInjector.get(serviceName + providerSuffix, caller);
+            return instanceInjector.invoke(provider.$get, provider, undefined, serviceName);
+          }));
+
+
+  forEach(loadModules(modulesToLoad), function(fn) { instanceInjector.invoke(fn || noop); });
+
+  return instanceInjector;
+
+  ////////////////////////////////////
+  // $provider
+  ////////////////////////////////////
+
+  function supportObject(delegate) {
+    return function(key, value) {
+      if (isObject(key)) {
+        forEach(key, reverseParams(delegate));
+      } else {
+        return delegate(key, value);
+      }
+    };
+  }
+
+  function provider(name, provider_) {
+    assertNotHasOwnProperty(name, 'service');
+    if (isFunction(provider_) || isArray(provider_)) {
+      provider_ = providerInjector.instantiate(provider_);
+    }
+    if (!provider_.$get) {
+      throw $injectorMinErr('pget', "Provider '{0}' must define $get factory method.", name);
+    }
+    return providerCache[name + providerSuffix] = provider_;
+  }
+
+  function enforceReturnValue(name, factory) {
+    return function enforcedReturnValue() {
+      var result = instanceInjector.invoke(factory, this);
+      if (isUndefined(result)) {
+        throw $injectorMinErr('undef', "Provider '{0}' must return a value from $get factory method.", name);
+      }
+      return result;
+    };
+  }
+
+  function factory(name, factoryFn, enforce) {
+    return provider(name, {
+      $get: enforce !== false ? enforceReturnValue(name, factoryFn) : factoryFn
+    });
+  }
+
+  function service(name, constructor) {
+    return factory(name, ['$injector', function($injector) {
+      return $injector.instantiate(constructor);
+    }]);
+  }
+
+  function value(name, val) { return factory(name, valueFn(val), false); }
+
+  function constant(name, value) {
+    assertNotHasOwnProperty(name, 'constant');
+    providerCache[name] = value;
+    instanceCache[name] = value;
+  }
+
+  function decorator(serviceName, decorFn) {
+    var origProvider = providerInjector.get(serviceName + providerSuffix),
+        orig$get = origProvider.$get;
+
+    origProvider.$get = function() {
+      var origInstance = instanceInjector.invoke(orig$get, origProvider);
+      return instanceInjector.invoke(decorFn, null, {$delegate: origInstance});
+    };
+  }
+
+  ////////////////////////////////////
+  // Module Loading
+  ////////////////////////////////////
+  function loadModules(modulesToLoad) {
+    var runBlocks = [], moduleFn;
+    forEach(modulesToLoad, function(module) {
+      if (loadedModules.get(module)) return;
+      loadedModules.put(module, true);
+
+      function runInvokeQueue(queue) {
+        var i, ii;
+        for (i = 0, ii = queue.length; i < ii; i++) {
+          var invokeArgs = queue[i],
+              provider = providerInjector.get(invokeArgs[0]);
+
+          provider[invokeArgs[1]].apply(provider, invokeArgs[2]);
+        }
+      }
+
+      try {
+        if (isString(module)) {
+          moduleFn = angularModule(module);
+          runBlocks = runBlocks.concat(loadModules(moduleFn.requires)).concat(moduleFn._runBlocks);
+          runInvokeQueue(moduleFn._invokeQueue);
+          runInvokeQueue(moduleFn._configBlocks);
+        } else if (isFunction(module)) {
+            runBlocks.push(providerInjector.invoke(module));
+        } else if (isArray(module)) {
+            runBlocks.push(providerInjector.invoke(module));
+        } else {
+          assertArgFn(module, 'module');
+        }
+      } catch (e) {
+        if (isArray(module)) {
+          module = module[module.length - 1];
+        }
+        if (e.message && e.stack && e.stack.indexOf(e.message) == -1) {
+          // Safari & FF's stack traces don't contain error.message content
+          // unlike those of Chrome and IE
+          // So if stack doesn't contain message, we create a new string that contains both.
+          // Since error.stack is read-only in Safari, I'm overriding e and not e.stack here.
+          /* jshint -W022 */
+          e = e.message + '\n' + e.stack;
+        }
+        throw $injectorMinErr('modulerr', "Failed to instantiate module {0} due to:\n{1}",
+                  module, e.stack || e.message || e);
+      }
+    });
+    return runBlocks;
+  }
+
+  ////////////////////////////////////
+  // internal Injector
+  ////////////////////////////////////
+
+  function createInternalInjector(cache, factory) {
+
+    function getService(serviceName, caller) {
+      if (cache.hasOwnProperty(serviceName)) {
+        if (cache[serviceName] === INSTANTIATING) {
+          throw $injectorMinErr('cdep', 'Circular dependency found: {0}',
+                    serviceName + ' <- ' + path.join(' <- '));
+        }
+        return cache[serviceName];
+      } else {
+        try {
+          path.unshift(serviceName);
+          cache[serviceName] = INSTANTIATING;
+          return cache[serviceName] = factory(serviceName, caller);
+        } catch (err) {
+          if (cache[serviceName] === INSTANTIATING) {
+            delete cache[serviceName];
+          }
+          throw err;
+        } finally {
+          path.shift();
+        }
+      }
+    }
+
+    function invoke(fn, self, locals, serviceName) {
+      if (typeof locals === 'string') {
+        serviceName = locals;
+        locals = null;
+      }
+
+      var args = [],
+          $inject = createInjector.$$annotate(fn, strictDi, serviceName),
+          length, i,
+          key;
+
+      for (i = 0, length = $inject.length; i < length; i++) {
+        key = $inject[i];
+        if (typeof key !== 'string') {
+          throw $injectorMinErr('itkn',
+                  'Incorrect injection token! Expected service name as string, got {0}', key);
+        }
+        args.push(
+          locals && locals.hasOwnProperty(key)
+          ? locals[key]
+          : getService(key, serviceName)
+        );
+      }
+      if (isArray(fn)) {
+        fn = fn[length];
+      }
+
+      // http://jsperf.com/angularjs-invoke-apply-vs-switch
+      // #5388
+      return fn.apply(self, args);
+    }
+
+    function instantiate(Type, locals, serviceName) {
+      // Check if Type is annotated and use just the given function at n-1 as parameter
+      // e.g. someModule.factory('greeter', ['$window', function(renamed$window) {}]);
+      // Object creation: http://jsperf.com/create-constructor/2
+      var instance = Object.create((isArray(Type) ? Type[Type.length - 1] : Type).prototype || null);
+      var returnedValue = invoke(Type, instance, locals, serviceName);
+
+      return isObject(returnedValue) || isFunction(returnedValue) ? returnedValue : instance;
+    }
+
+    return {
+      invoke: invoke,
+      instantiate: instantiate,
+      get: getService,
+      annotate: createInjector.$$annotate,
+      has: function(name) {
+        return providerCache.hasOwnProperty(name + providerSuffix) || cache.hasOwnProperty(name);
+      }
+    };
+  }
+}
+
+createInjector.$$annotate = annotate;
+
+/**
+ * @ngdoc provider
+ * @name $anchorScrollProvider
+ *
+ * @description
+ * Use `$anchorScrollProvider` to disable automatic scrolling whenever
+ * {@link ng.$location#hash $location.hash()} changes.
+ */
+function $AnchorScrollProvider() {
+
+  var autoScrollingEnabled = true;
+
+  /**
+   * @ngdoc method
+   * @name $anchorScrollProvider#disableAutoScrolling
+   *
+   * @description
+   * By default, {@link ng.$anchorScroll $anchorScroll()} will automatically detect changes to
+   * {@link ng.$location#hash $location.hash()} and scroll to the element matching the new hash.<br />
+   * Use this method to disable automatic scrolling.
+   *
+   * If automatic scrolling is disabled, one must explicitly call
+   * {@link ng.$anchorScroll $anchorScroll()} in order to scroll to the element related to the
+   * current hash.
+   */
+  this.disableAutoScrolling = function() {
+    autoScrollingEnabled = false;
+  };
+
+  /**
+   * @ngdoc service
+   * @name $anchorScroll
+   * @kind function
+   * @requires $window
+   * @requires $location
+   * @requires $rootScope
+   *
+   * @description
+   * When called, it checks the current value of {@link ng.$location#hash $location.hash()} and
+   * scrolls to the related element, according to the rules specified in the
+   * [Html5 spec](http://dev.w3.org/html5/spec/Overview.html#the-indicated-part-of-the-document).
+   *
+   * It also watches the {@link ng.$location#hash $location.hash()} and automatically scrolls to
+   * match any anchor whenever it changes. This can be disabled by calling
+   * {@link ng.$anchorScrollProvider#disableAutoScrolling $anchorScrollProvider.disableAutoScrolling()}.
+   *
+   * Additionally, you can use its {@link ng.$anchorScroll#yOffset yOffset} property to specify a
+   * vertical scroll-offset (either fixed or dynamic).
+   *
+   * @property {(number|function|jqLite)} yOffset
+   * If set, specifies a vertical scroll-offset. This is often useful when there are fixed
+   * positioned elements at the top of the page, such as navbars, headers etc.
+   *
+   * `yOffset` can be specified in various ways:
+   * - **number**: A fixed number of pixels to be used as offset.<br /><br />
+   * - **function**: A getter function called everytime `$anchorScroll()` is executed. Must return
+   *   a number representing the offset (in pixels).<br /><br />
+   * - **jqLite**: A jqLite/jQuery element to be used for specifying the offset. The distance from
+   *   the top of the page to the element's bottom will be used as offset.<br />
+   *   **Note**: The element will be taken into account only as long as its `position` is set to
+   *   `fixed`. This option is useful, when dealing with responsive navbars/headers that adjust
+   *   their height and/or positioning according to the viewport's size.
+   *
+   * <br />
+   * <div class="alert alert-warning">
+   * In order for `yOffset` to work properly, scrolling should take place on the document's root and
+   * not some child element.
+   * </div>
+   *
+   * @example
+     <example module="anchorScrollExample">
+       <file name="index.html">
+         <div id="scrollArea" ng-controller="ScrollController">
+           <a ng-click="gotoBottom()">Go to bottom</a>
+           <a id="bottom"></a> You're at the bottom!
+         </div>
+       </file>
+       <file name="script.js">
+         angular.module('anchorScrollExample', [])
+           .controller('ScrollController', ['$scope', '$location', '$anchorScroll',
+             function ($scope, $location, $anchorScroll) {
+               $scope.gotoBottom = function() {
+                 // set the location.hash to the id of
+                 // the element you wish to scroll to.
+                 $location.hash('bottom');
+
+                 // call $anchorScroll()
+                 $anchorScroll();
+               };
+             }]);
+       </file>
+       <file name="style.css">
+         #scrollArea {
+           height: 280px;
+           overflow: auto;
+         }
+
+         #bottom {
+           display: block;
+           margin-top: 2000px;
+         }
+       </file>
+     </example>
+   *
+   * <hr />
+   * The example below illustrates the use of a vertical scroll-offset (specified as a fixed value).
+   * See {@link ng.$anchorScroll#yOffset $anchorScroll.yOffset} for more details.
+   *
+   * @example
+     <example module="anchorScrollOffsetExample">
+       <file name="index.html">
+         <div class="fixed-header" ng-controller="headerCtrl">
+           <a href="" ng-click="gotoAnchor(x)" ng-repeat="x in [1,2,3,4,5]">
+             Go to anchor {{x}}
+           </a>
+         </div>
+         <div id="anchor{{x}}" class="anchor" ng-repeat="x in [1,2,3,4,5]">
+           Anchor {{x}} of 5
+         </div>
+       </file>
+       <file name="script.js">
+         angular.module('anchorScrollOffsetExample', [])
+           .run(['$anchorScroll', function($anchorScroll) {
+             $anchorScroll.yOffset = 50;   // always scroll by 50 extra pixels
+           }])
+           .controller('headerCtrl', ['$anchorScroll', '$location', '$scope',
+             function ($anchorScroll, $location, $scope) {
+               $scope.gotoAnchor = function(x) {
+                 var newHash = 'anchor' + x;
+                 if ($location.hash() !== newHash) {
+                   // set the $location.hash to `newHash` and
+                   // $anchorScroll will automatically scroll to it
+                   $location.hash('anchor' + x);
+                 } else {
+                   // call $anchorScroll() explicitly,
+                   // since $location.hash hasn't changed
+                   $anchorScroll();
+                 }
+               };
+             }
+           ]);
+       </file>
+       <file name="style.css">
+         body {
+           padding-top: 50px;
+         }
+
+         .anchor {
+           border: 2px dashed DarkOrchid;
+           padding: 10px 10px 200px 10px;
+         }
+
+         .fixed-header {
+           background-color: rgba(0, 0, 0, 0.2);
+           height: 50px;
+           position: fixed;
+           top: 0; left: 0; right: 0;
+         }
+
+         .fixed-header > a {
+           display: inline-block;
+           margin: 5px 15px;
+         }
+       </file>
+     </example>
+   */
+  this.$get = ['$window', '$location', '$rootScope', function($window, $location, $rootScope) {
+    var document = $window.document;
+
+    // Helper function to get first anchor from a NodeList
+    // (using `Array#some()` instead of `angular#forEach()` since it's more performant
+    //  and working in all supported browsers.)
+    function getFirstAnchor(list) {
+      var result = null;
+      Array.prototype.some.call(list, function(element) {
+        if (nodeName_(element) === 'a') {
+          result = element;
+          return true;
+        }
+      });
+      return result;
+    }
+
+    function getYOffset() {
+
+      var offset = scroll.yOffset;
+
+      if (isFunction(offset)) {
+        offset = offset();
+      } else if (isElement(offset)) {
+        var elem = offset[0];
+        var style = $window.getComputedStyle(elem);
+        if (style.position !== 'fixed') {
+          offset = 0;
+        } else {
+          offset = elem.getBoundingClientRect().bottom;
+        }
+      } else if (!isNumber(offset)) {
+        offset = 0;
+      }
+
+      return offset;
+    }
+
+    function scrollTo(elem) {
+      if (elem) {
+        elem.scrollIntoView();
+
+        var offset = getYOffset();
+
+        if (offset) {
+          // `offset` is the number of pixels we should scroll UP in order to align `elem` properly.
+          // This is true ONLY if the call to `elem.scrollIntoView()` initially aligns `elem` at the
+          // top of the viewport.
+          //
+          // IF the number of pixels from the top of `elem` to the end of the page's content is less
+          // than the height of the viewport, then `elem.scrollIntoView()` will align the `elem` some
+          // way down the page.
+          //
+          // This is often the case for elements near the bottom of the page.
+          //
+          // In such cases we do not need to scroll the whole `offset` up, just the difference between
+          // the top of the element and the offset, which is enough to align the top of `elem` at the
+          // desired position.
+          var elemTop = elem.getBoundingClientRect().top;
+          $window.scrollBy(0, elemTop - offset);
+        }
+      } else {
+        $window.scrollTo(0, 0);
+      }
+    }
+
+    function scroll() {
+      var hash = $location.hash(), elm;
+
+      // empty hash, scroll to the top of the page
+      if (!hash) scrollTo(null);
+
+      // element with given id
+      else if ((elm = document.getElementById(hash))) scrollTo(elm);
+
+      // first anchor with given name :-D
+      else if ((elm = getFirstAnchor(document.getElementsByName(hash)))) scrollTo(elm);
+
+      // no element and hash == 'top', scroll to the top of the page
+      else if (hash === 'top') scrollTo(null);
+    }
+
+    // does not scroll when user clicks on anchor link that is currently on
+    // (no url change, no $location.hash() change), browser native does scroll
+    if (autoScrollingEnabled) {
+      $rootScope.$watch(function autoScrollWatch() {return $location.hash();},
+        function autoScrollWatchAction(newVal, oldVal) {
+          // skip the initial scroll if $location.hash is empty
+          if (newVal === oldVal && newVal === '') return;
+
+          jqLiteDocumentLoaded(function() {
+            $rootScope.$evalAsync(scroll);
+          });
+        });
+    }
+
+    return scroll;
+  }];
+}
+
+var $animateMinErr = minErr('$animate');
+
+/**
+ * @ngdoc provider
+ * @name $animateProvider
+ *
+ * @description
+ * Default implementation of $animate that doesn't perform any animations, instead just
+ * synchronously performs DOM
+ * updates and calls done() callbacks.
+ *
+ * In order to enable animations the ngAnimate module has to be loaded.
+ *
+ * To see the functional implementation check out src/ngAnimate/animate.js
+ */
+var $AnimateProvider = ['$provide', function($provide) {
+
+
+  this.$$selectors = {};
+
+
+  /**
+   * @ngdoc method
+   * @name $animateProvider#register
+   *
+   * @description
+   * Registers a new injectable animation factory function. The factory function produces the
+   * animation object which contains callback functions for each event that is expected to be
+   * animated.
+   *
+   *   * `eventFn`: `function(Element, doneFunction)` The element to animate, the `doneFunction`
+   *   must be called once the element animation is complete. If a function is returned then the
+   *   animation service will use this function to cancel the animation whenever a cancel event is
+   *   triggered.
+   *
+   *
+   * ```js
+   *   return {
+     *     eventFn : function(element, done) {
+     *       //code to run the animation
+     *       //once complete, then run done()
+     *       return function cancellationFunction() {
+     *         //code to cancel the animation
+     *       }
+     *     }
+     *   }
+   * ```
+   *
+   * @param {string} name The name of the animation.
+   * @param {Function} factory The factory function that will be executed to return the animation
+   *                           object.
+   */
+  this.register = function(name, factory) {
+    var key = name + '-animation';
+    if (name && name.charAt(0) != '.') throw $animateMinErr('notcsel',
+        "Expecting class selector starting with '.' got '{0}'.", name);
+    this.$$selectors[name.substr(1)] = key;
+    $provide.factory(key, factory);
+  };
+
+  /**
+   * @ngdoc method
+   * @name $animateProvider#classNameFilter
+   *
+   * @description
+   * Sets and/or returns the CSS class regular expression that is checked when performing
+   * an animation. Upon bootstrap the classNameFilter value is not set at all and will
+   * therefore enable $animate to attempt to perform an animation on any element.
+   * When setting the classNameFilter value, animations will only be performed on elements
+   * that successfully match the filter expression. This in turn can boost performance
+   * for low-powered devices as well as applications containing a lot of structural operations.
+   * @param {RegExp=} expression The className expression which will be checked against all animations
+   * @return {RegExp} The current CSS className expression value. If null then there is no expression value
+   */
+  this.classNameFilter = function(expression) {
+    if (arguments.length === 1) {
+      this.$$classNameFilter = (expression instanceof RegExp) ? expression : null;
+    }
+    return this.$$classNameFilter;
+  };
+
+  this.$get = ['$$q', '$$asyncCallback', '$rootScope', function($$q, $$asyncCallback, $rootScope) {
+
+    var currentDefer;
+
+    function runAnimationPostDigest(fn) {
+      var cancelFn, defer = $$q.defer();
+      defer.promise.$$cancelFn = function ngAnimateMaybeCancel() {
+        cancelFn && cancelFn();
+      };
+
+      $rootScope.$$postDigest(function ngAnimatePostDigest() {
+        cancelFn = fn(function ngAnimateNotifyComplete() {
+          defer.resolve();
+        });
+      });
+
+      return defer.promise;
+    }
+
+    function resolveElementClasses(element, classes) {
+      var toAdd = [], toRemove = [];
+
+      var hasClasses = createMap();
+      forEach((element.attr('class') || '').split(/\s+/), function(className) {
+        hasClasses[className] = true;
+      });
+
+      forEach(classes, function(status, className) {
+        var hasClass = hasClasses[className];
+
+        // If the most recent class manipulation (via $animate) was to remove the class, and the
+        // element currently has the class, the class is scheduled for removal. Otherwise, if
+        // the most recent class manipulation (via $animate) was to add the class, and the
+        // element does not currently have the class, the class is scheduled to be added.
+        if (status === false && hasClass) {
+          toRemove.push(className);
+        } else if (status === true && !hasClass) {
+          toAdd.push(className);
+        }
+      });
+
+      return (toAdd.length + toRemove.length) > 0 &&
+        [toAdd.length ? toAdd : null, toRemove.length ? toRemove : null];
+    }
+
+    function cachedClassManipulation(cache, classes, op) {
+      for (var i=0, ii = classes.length; i < ii; ++i) {
+        var className = classes[i];
+        cache[className] = op;
+      }
+    }
+
+    function asyncPromise() {
+      // only serve one instance of a promise in order to save CPU cycles
+      if (!currentDefer) {
+        currentDefer = $$q.defer();
+        $$asyncCallback(function() {
+          currentDefer.resolve();
+          currentDefer = null;
+        });
+      }
+      return currentDefer.promise;
+    }
+
+    function applyStyles(element, options) {
+      if (angular.isObject(options)) {
+        var styles = extend(options.from || {}, options.to || {});
+        element.css(styles);
+      }
+    }
+
+    /**
+     *
+     * @ngdoc service
+     * @name $animate
+     * @description The $animate service provides rudimentary DOM manipulation functions to
+     * insert, remove and move elements within the DOM, as well as adding and removing classes.
+     * This service is the core service used by the ngAnimate $animator service which provides
+     * high-level animation hooks for CSS and JavaScript.
+     *
+     * $animate is available in the AngularJS core, however, the ngAnimate module must be included
+     * to enable full out animation support. Otherwise, $animate will only perform simple DOM
+     * manipulation operations.
+     *
+     * To learn more about enabling animation support, click here to visit the {@link ngAnimate
+     * ngAnimate module page} as well as the {@link ngAnimate.$animate ngAnimate $animate service
+     * page}.
+     */
+    return {
+      animate: function(element, from, to) {
+        applyStyles(element, { from: from, to: to });
+        return asyncPromise();
+      },
+
+      /**
+       *
+       * @ngdoc method
+       * @name $animate#enter
+       * @kind function
+       * @description Inserts the element into the DOM either after the `after` element or
+       * as the first child within the `parent` element. When the function is called a promise
+       * is returned that will be resolved at a later time.
+       * @param {DOMElement} element the element which will be inserted into the DOM
+       * @param {DOMElement} parent the parent element which will append the element as
+       *   a child (if the after element is not present)
+       * @param {DOMElement} after the sibling element which will append the element
+       *   after itself
+       * @param {object=} options an optional collection of styles that will be applied to the element.
+       * @return {Promise} the animation callback promise
+       */
+      enter: function(element, parent, after, options) {
+        applyStyles(element, options);
+        after ? after.after(element)
+              : parent.prepend(element);
+        return asyncPromise();
+      },
+
+      /**
+       *
+       * @ngdoc method
+       * @name $animate#leave
+       * @kind function
+       * @description Removes the element from the DOM. When the function is called a promise
+       * is returned that will be resolved at a later time.
+       * @param {DOMElement} element the element which will be removed from the DOM
+       * @param {object=} options an optional collection of options that will be applied to the element.
+       * @return {Promise} the animation callback promise
+       */
+      leave: function(element, options) {
+        applyStyles(element, options);
+        element.remove();
+        return asyncPromise();
+      },
+
+      /**
+       *
+       * @ngdoc method
+       * @name $animate#move
+       * @kind function
+       * @description Moves the position of the provided element within the DOM to be placed
+       * either after the `after` element or inside of the `parent` element. When the function
+       * is called a promise is returned that will be resolved at a later time.
+       *
+       * @param {DOMElement} element the element which will be moved around within the
+       *   DOM
+       * @param {DOMElement} parent the parent element where the element will be
+       *   inserted into (if the after element is not present)
+       * @param {DOMElement} after the sibling element where the element will be
+       *   positioned next to
+       * @param {object=} options an optional collection of options that will be applied to the element.
+       * @return {Promise} the animation callback promise
+       */
+      move: function(element, parent, after, options) {
+        // Do not remove element before insert. Removing will cause data associated with the
+        // element to be dropped. Insert will implicitly do the remove.
+        return this.enter(element, parent, after, options);
+      },
+
+      /**
+       *
+       * @ngdoc method
+       * @name $animate#addClass
+       * @kind function
+       * @description Adds the provided className CSS class value to the provided element.
+       * When the function is called a promise is returned that will be resolved at a later time.
+       * @param {DOMElement} element the element which will have the className value
+       *   added to it
+       * @param {string} className the CSS class which will be added to the element
+       * @param {object=} options an optional collection of options that will be applied to the element.
+       * @return {Promise} the animation callback promise
+       */
+      addClass: function(element, className, options) {
+        return this.setClass(element, className, [], options);
+      },
+
+      $$addClassImmediately: function(element, className, options) {
+        element = jqLite(element);
+        className = !isString(className)
+                        ? (isArray(className) ? className.join(' ') : '')
+                        : className;
+        forEach(element, function(element) {
+          jqLiteAddClass(element, className);
+        });
+        applyStyles(element, options);
+        return asyncPromise();
+      },
+
+      /**
+       *
+       * @ngdoc method
+       * @name $animate#removeClass
+       * @kind function
+       * @description Removes the provided className CSS class value from the provided element.
+       * When the function is called a promise is returned that will be resolved at a later time.
+       * @param {DOMElement} element the element which will have the className value
+       *   removed from it
+       * @param {string} className the CSS class which will be removed from the element
+       * @param {object=} options an optional collection of options that will be applied to the element.
+       * @return {Promise} the animation callback promise
+       */
+      removeClass: function(element, className, options) {
+        return this.setClass(element, [], className, options);
+      },
+
+      $$removeClassImmediately: function(element, className, options) {
+        element = jqLite(element);
+        className = !isString(className)
+                        ? (isArray(className) ? className.join(' ') : '')
+                        : className;
+        forEach(element, function(element) {
+          jqLiteRemoveClass(element, className);
+        });
+        applyStyles(element, options);
+        return asyncPromise();
+      },
+
+      /**
+       *
+       * @ngdoc method
+       * @name $animate#setClass
+       * @kind function
+       * @description Adds and/or removes the given CSS classes to and from the element.
+       * When the function is called a promise is returned that will be resolved at a later time.
+       * @param {DOMElement} element the element which will have its CSS classes changed
+       *   removed from it
+       * @param {string} add the CSS classes which will be added to the element
+       * @param {string} remove the CSS class which will be removed from the element
+       * @param {object=} options an optional collection of options that will be applied to the element.
+       * @return {Promise} the animation callback promise
+       */
+      setClass: function(element, add, remove, options) {
+        var self = this;
+        var STORAGE_KEY = '$$animateClasses';
+        var createdCache = false;
+        element = jqLite(element);
+
+        var cache = element.data(STORAGE_KEY);
+        if (!cache) {
+          cache = {
+            classes: {},
+            options: options
+          };
+          createdCache = true;
+        } else if (options && cache.options) {
+          cache.options = angular.extend(cache.options || {}, options);
+        }
+
+        var classes = cache.classes;
+
+        add = isArray(add) ? add : add.split(' ');
+        remove = isArray(remove) ? remove : remove.split(' ');
+        cachedClassManipulation(classes, add, true);
+        cachedClassManipulation(classes, remove, false);
+
+        if (createdCache) {
+          cache.promise = runAnimationPostDigest(function(done) {
+            var cache = element.data(STORAGE_KEY);
+            element.removeData(STORAGE_KEY);
+
+            // in the event that the element is removed before postDigest
+            // is run then the cache will be undefined and there will be
+            // no need anymore to add or remove and of the element classes
+            if (cache) {
+              var classes = resolveElementClasses(element, cache.classes);
+              if (classes) {
+                self.$$setClassImmediately(element, classes[0], classes[1], cache.options);
+              }
+            }
+
+            done();
+          });
+          element.data(STORAGE_KEY, cache);
+        }
+
+        return cache.promise;
+      },
+
+      $$setClassImmediately: function(element, add, remove, options) {
+        add && this.$$addClassImmediately(element, add);
+        remove && this.$$removeClassImmediately(element, remove);
+        applyStyles(element, options);
+        return asyncPromise();
+      },
+
+      enabled: noop,
+      cancel: noop
+    };
+  }];
+}];
+
+function $$AsyncCallbackProvider() {
+  this.$get = ['$$rAF', '$timeout', function($$rAF, $timeout) {
+    return $$rAF.supported
+      ? function(fn) { return $$rAF(fn); }
+      : function(fn) {
+        return $timeout(fn, 0, false);
+      };
+  }];
+}
+
+/* global stripHash: true */
+
+/**
+ * ! This is a private undocumented service !
+ *
+ * @name $browser
+ * @requires $log
+ * @description
+ * This object has two goals:
+ *
+ * - hide all the global state in the browser caused by the window object
+ * - abstract away all the browser specific features and inconsistencies
+ *
+ * For tests we provide {@link ngMock.$browser mock implementation} of the `$browser`
+ * service, which can be used for convenient testing of the application without the interaction with
+ * the real browser apis.
+ */
+/**
+ * @param {object} window The global window object.
+ * @param {object} document jQuery wrapped document.
+ * @param {object} $log window.console or an object with the same interface.
+ * @param {object} $sniffer $sniffer service
+ */
+function Browser(window, document, $log, $sniffer) {
+  var self = this,
+      rawDocument = document[0],
+      location = window.location,
+      history = window.history,
+      setTimeout = window.setTimeout,
+      clearTimeout = window.clearTimeout,
+      pendingDeferIds = {};
+
+  self.isMock = false;
+
+  var outstandingRequestCount = 0;
+  var outstandingRequestCallbacks = [];
+
+  // TODO(vojta): remove this temporary api
+  self.$$completeOutstandingRequest = completeOutstandingRequest;
+  self.$$incOutstandingRequestCount = function() { outstandingRequestCount++; };
+
+  /**
+   * Executes the `fn` function(supports currying) and decrements the `outstandingRequestCallbacks`
+   * counter. If the counter reaches 0, all the `outstandingRequestCallbacks` are executed.
+   */
+  function completeOutstandingRequest(fn) {
+    try {
+      fn.apply(null, sliceArgs(arguments, 1));
+    } finally {
+      outstandingRequestCount--;
+      if (outstandingRequestCount === 0) {
+        while (outstandingRequestCallbacks.length) {
+          try {
+            outstandingRequestCallbacks.pop()();
+          } catch (e) {
+            $log.error(e);
+          }
+        }
+      }
+    }
+  }
+
+  function getHash(url) {
+    var index = url.indexOf('#');
+    return index === -1 ? '' : url.substr(index);
+  }
+
+  /**
+   * @private
+   * Note: this method is used only by scenario runner
+   * TODO(vojta): prefix this method with $$ ?
+   * @param {function()} callback Function that will be called when no outstanding request
+   */
+  self.notifyWhenNoOutstandingRequests = function(callback) {
+    // force browser to execute all pollFns - this is needed so that cookies and other pollers fire
+    // at some deterministic time in respect to the test runner's actions. Leaving things up to the
+    // regular poller would result in flaky tests.
+    forEach(pollFns, function(pollFn) { pollFn(); });
+
+    if (outstandingRequestCount === 0) {
+      callback();
+    } else {
+      outstandingRequestCallbacks.push(callback);
+    }
+  };
+
+  //////////////////////////////////////////////////////////////
+  // Poll Watcher API
+  //////////////////////////////////////////////////////////////
+  var pollFns = [],
+      pollTimeout;
+
+  /**
+   * @name $browser#addPollFn
+   *
+   * @param {function()} fn Poll function to add
+   *
+   * @description
+   * Adds a function to the list of functions that poller periodically executes,
+   * and starts polling if not started yet.
+   *
+   * @returns {function()} the added function
+   */
+  self.addPollFn = function(fn) {
+    if (isUndefined(pollTimeout)) startPoller(100, setTimeout);
+    pollFns.push(fn);
+    return fn;
+  };
+
+  /**
+   * @param {number} interval How often should browser call poll functions (ms)
+   * @param {function()} setTimeout Reference to a real or fake `setTimeout` function.
+   *
+   * @description
+   * Configures the poller to run in the specified intervals, using the specified
+   * setTimeout fn and kicks it off.
+   */
+  function startPoller(interval, setTimeout) {
+    (function check() {
+      forEach(pollFns, function(pollFn) { pollFn(); });
+      pollTimeout = setTimeout(check, interval);
+    })();
+  }
+
+  //////////////////////////////////////////////////////////////
+  // URL API
+  //////////////////////////////////////////////////////////////
+
+  var cachedState, lastHistoryState,
+      lastBrowserUrl = location.href,
+      baseElement = document.find('base'),
+      reloadLocation = null;
+
+  cacheState();
+  lastHistoryState = cachedState;
+
+  /**
+   * @name $browser#url
+   *
+   * @description
+   * GETTER:
+   * Without any argument, this method just returns current value of location.href.
+   *
+   * SETTER:
+   * With at least one argument, this method sets url to new value.
+   * If html5 history api supported, pushState/replaceState is used, otherwise
+   * location.href/location.replace is used.
+   * Returns its own instance to allow chaining
+   *
+   * NOTE: this api is intended for use only by the $location service. Please use the
+   * {@link ng.$location $location service} to change url.
+   *
+   * @param {string} url New url (when used as setter)
+   * @param {boolean=} replace Should new url replace current history record?
+   * @param {object=} state object to use with pushState/replaceState
+   */
+  self.url = function(url, replace, state) {
+    // In modern browsers `history.state` is `null` by default; treating it separately
+    // from `undefined` would cause `$browser.url('/foo')` to change `history.state`
+    // to undefined via `pushState`. Instead, let's change `undefined` to `null` here.
+    if (isUndefined(state)) {
+      state = null;
+    }
+
+    // Android Browser BFCache causes location, history reference to become stale.
+    if (location !== window.location) location = window.location;
+    if (history !== window.history) history = window.history;
+
+    // setter
+    if (url) {
+      var sameState = lastHistoryState === state;
+
+      // Don't change anything if previous and current URLs and states match. This also prevents
+      // IE<10 from getting into redirect loop when in LocationHashbangInHtml5Url mode.
+      // See https://github.com/angular/angular.js/commit/ffb2701
+      if (lastBrowserUrl === url && (!$sniffer.history || sameState)) {
+        return self;
+      }
+      var sameBase = lastBrowserUrl && stripHash(lastBrowserUrl) === stripHash(url);
+      lastBrowserUrl = url;
+      lastHistoryState = state;
+      // Don't use history API if only the hash changed
+      // due to a bug in IE10/IE11 which leads
+      // to not firing a `hashchange` nor `popstate` event
+      // in some cases (see #9143).
+      if ($sniffer.history && (!sameBase || !sameState)) {
+        history[replace ? 'replaceState' : 'pushState'](state, '', url);
+        cacheState();
+        // Do the assignment again so that those two variables are referentially identical.
+        lastHistoryState = cachedState;
+      } else {
+        if (!sameBase || reloadLocation) {
+          reloadLocation = url;
+        }
+        if (replace) {
+          location.replace(url);
+        } else if (!sameBase) {
+          location.href = url;
+        } else {
+          location.hash = getHash(url);
+        }
+      }
+      return self;
+    // getter
+    } else {
+      // - reloadLocation is needed as browsers don't allow to read out
+      //   the new location.href if a reload happened.
+      // - the replacement is a workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=407172
+      return reloadLocation || location.href.replace(/%27/g,"'");
+    }
+  };
+
+  /**
+   * @name $browser#state
+   *
+   * @description
+   * This method is a getter.
+   *
+   * Return history.state or null if history.state is undefined.
+   *
+   * @returns {object} state
+   */
+  self.state = function() {
+    return cachedState;
+  };
+
+  var urlChangeListeners = [],
+      urlChangeInit = false;
+
+  function cacheStateAndFireUrlChange() {
+    cacheState();
+    fireUrlChange();
+  }
+
+  function getCurrentState() {
+    try {
+      return history.state;
+    } catch (e) {
+      // MSIE can reportedly throw when there is no state (UNCONFIRMED).
+    }
+  }
+
+  // This variable should be used *only* inside the cacheState function.
+  var lastCachedState = null;
+  function cacheState() {
+    // This should be the only place in $browser where `history.state` is read.
+    cachedState = getCurrentState();
+    cachedState = isUndefined(cachedState) ? null : cachedState;
+
+    // Prevent callbacks fo fire twice if both hashchange & popstate were fired.
+    if (equals(cachedState, lastCachedState)) {
+      cachedState = lastCachedState;
+    }
+    lastCachedState = cachedState;
+  }
+
+  function fireUrlChange() {
+    if (lastBrowserUrl === self.url() && lastHistoryState === cachedState) {
+      return;
+    }
+
+    lastBrowserUrl = self.url();
+    lastHistoryState = cachedState;
+    forEach(urlChangeListeners, function(listener) {
+      listener(self.url(), cachedState);
+    });
+  }
+
+  /**
+   * @name $browser#onUrlChange
+   *
+   * @description
+   * Register callback function that will be called, when url changes.
+   *
+   * It's only called when the url is changed from outside of angular:
+   * - user types different url into address bar
+   * - user clicks on history (forward/back) button
+   * - user clicks on a link
+   *
+   * It's not called when url is changed by $browser.url() method
+   *
+   * The listener gets called with new url as parameter.
+   *
+   * NOTE: this api is intended for use only by the $location service. Please use the
+   * {@link ng.$location $location service} to monitor url changes in angular apps.
+   *
+   * @param {function(string)} listener Listener function to be called when url changes.
+   * @return {function(string)} Returns the registered listener fn - handy if the fn is anonymous.
+   */
+  self.onUrlChange = function(callback) {
+    // TODO(vojta): refactor to use node's syntax for events
+    if (!urlChangeInit) {
+      // We listen on both (hashchange/popstate) when available, as some browsers (e.g. Opera)
+      // don't fire popstate when user change the address bar and don't fire hashchange when url
+      // changed by push/replaceState
+
+      // html5 history api - popstate event
+      if ($sniffer.history) jqLite(window).on('popstate', cacheStateAndFireUrlChange);
+      // hashchange event
+      jqLite(window).on('hashchange', cacheStateAndFireUrlChange);
+
+      urlChangeInit = true;
+    }
+
+    urlChangeListeners.push(callback);
+    return callback;
+  };
+
+  /**
+   * Checks whether the url has changed outside of Angular.
+   * Needs to be exported to be able to check for changes that have been done in sync,
+   * as hashchange/popstate events fire in async.
+   */
+  self.$$checkUrlChange = fireUrlChange;
+
+  //////////////////////////////////////////////////////////////
+  // Misc API
+  //////////////////////////////////////////////////////////////
+
+  /**
+   * @name $browser#baseHref
+   *
+   * @description
+   * Returns current <base href>
+   * (always relative - without domain)
+   *
+   * @returns {string} The current base href
+   */
+  self.baseHref = function() {
+    var href = baseElement.attr('href');
+    return href ? href.replace(/^(https?\:)?\/\/[^\/]*/, '') : '';
+  };
+
+  //////////////////////////////////////////////////////////////
+  // Cookies API
+  //////////////////////////////////////////////////////////////
+  var lastCookies = {};
+  var lastCookieString = '';
+  var cookiePath = self.baseHref();
+
+  function safeDecodeURIComponent(str) {
+    try {
+      return decodeURIComponent(str);
+    } catch (e) {
+      return str;
+    }
+  }
+
+  /**
+   * @name $browser#cookies
+   *
+   * @param {string=} name Cookie name
+   * @param {string=} value Cookie value
+   *
+   * @description
+   * The cookies method provides a 'private' low level access to browser cookies.
+   * It is not meant to be used directly, use the $cookie service instead.
+   *
+   * The return values vary depending on the arguments that the method was called with as follows:
+   *
+   * - cookies() -> hash of all cookies, this is NOT a copy of the internal state, so do not modify
+   *   it
+   * - cookies(name, value) -> set name to value, if value is undefined delete the cookie
+   * - cookies(name) -> the same as (name, undefined) == DELETES (no one calls it right now that
+   *   way)
+   *
+   * @returns {Object} Hash of all cookies (if called without any parameter)
+   */
+  self.cookies = function(name, value) {
+    var cookieLength, cookieArray, cookie, i, index;
+
+    if (name) {
+      if (value === undefined) {
+        rawDocument.cookie = encodeURIComponent(name) + "=;path=" + cookiePath +
+                                ";expires=Thu, 01 Jan 1970 00:00:00 GMT";
+      } else {
+        if (isString(value)) {
+          cookieLength = (rawDocument.cookie = encodeURIComponent(name) + '=' + encodeURIComponent(value) +
+                                ';path=' + cookiePath).length + 1;
+
+          // per http://www.ietf.org/rfc/rfc2109.txt browser must allow at minimum:
+          // - 300 cookies
+          // - 20 cookies per unique domain
+          // - 4096 bytes per cookie
+          if (cookieLength > 4096) {
+            $log.warn("Cookie '" + name +
+              "' possibly not set or overflowed because it was too large (" +
+              cookieLength + " > 4096 bytes)!");
+          }
+        }
+      }
+    } else {
+      if (rawDocument.cookie !== lastCookieString) {
+        lastCookieString = rawDocument.cookie;
+        cookieArray = lastCookieString.split("; ");
+        lastCookies = {};
+
+        for (i = 0; i < cookieArray.length; i++) {
+          cookie = cookieArray[i];
+          index = cookie.indexOf('=');
+          if (index > 0) { //ignore nameless cookies
+            name = safeDecodeURIComponent(cookie.substring(0, index));
+            // the first value that is seen for a cookie is the most
+            // specific one.  values for the same cookie name that
+            // follow are for less specific paths.
+            if (lastCookies[name] === undefined) {
+              lastCookies[name] = safeDecodeURIComponent(cookie.substring(index + 1));
+            }
+          }
+        }
+      }
+      return lastCookies;
+    }
+  };
+
+
+  /**
+   * @name $browser#defer
+   * @param {function()} fn A function, who's execution should be deferred.
+   * @param {number=} [delay=0] of milliseconds to defer the function execution.
+   * @returns {*} DeferId that can be used to cancel the task via `$browser.defer.cancel()`.
+   *
+   * @description
+   * Executes a fn asynchronously via `setTimeout(fn, delay)`.
+   *
+   * Unlike when calling `setTimeout` directly, in test this function is mocked and instead of using
+   * `setTimeout` in tests, the fns are queued in an array, which can be programmatically flushed
+   * via `$browser.defer.flush()`.
+   *
+   */
+  self.defer = function(fn, delay) {
+    var timeoutId;
+    outstandingRequestCount++;
+    timeoutId = setTimeout(function() {
+      delete pendingDeferIds[timeoutId];
+      completeOutstandingRequest(fn);
+    }, delay || 0);
+    pendingDeferIds[timeoutId] = true;
+    return timeoutId;
+  };
+
+
+  /**
+   * @name $browser#defer.cancel
+   *
+   * @description
+   * Cancels a deferred task identified with `deferId`.
+   *
+   * @param {*} deferId Token returned by the `$browser.defer` function.
+   * @returns {boolean} Returns `true` if the task hasn't executed yet and was successfully
+   *                    canceled.
+   */
+  self.defer.cancel = function(deferId) {
+    if (pendingDeferIds[deferId]) {
+      delete pendingDeferIds[deferId];
+      clearTimeout(deferId);
+      completeOutstandingRequest(noop);
+      return true;
+    }
+    return false;
+  };
+
+}
+
+function $BrowserProvider() {
+  this.$get = ['$window', '$log', '$sniffer', '$document',
+      function($window, $log, $sniffer, $document) {
+        return new Browser($window, $document, $log, $sniffer);
+      }];
+}
+
+/**
+ * @ngdoc service
+ * @name $cacheFactory
+ *
+ * @description
+ * Factory that constructs {@link $cacheFactory.Cache Cache} objects and gives access to
+ * them.
+ *
+ * ```js
+ *
+ *  var cache = $cacheFactory('cacheId');
+ *  expect($cacheFactory.get('cacheId')).toBe(cache);
+ *  expect($cacheFactory.get('noSuchCacheId')).not.toBeDefined();
+ *
+ *  cache.put("key", "value");
+ *  cache.put("another key", "another value");
+ *
+ *  // We've specified no options on creation
+ *  expect(cache.info()).toEqual({id: 'cacheId', size: 2});
+ *
+ * ```
+ *
+ *
+ * @param {string} cacheId Name or id of the newly created cache.
+ * @param {object=} options Options object that specifies the cache behavior. Properties:
+ *
+ *   - `{number=}` `capacity` — turns the cache into LRU cache.
+ *
+ * @returns {object} Newly created cache object with the following set of methods:
+ *
+ * - `{object}` `info()` — Returns id, size, and options of cache.
+ * - `{{*}}` `put({string} key, {*} value)` — Puts a new key-value pair into the cache and returns
+ *   it.
+ * - `{{*}}` `get({string} key)` — Returns cached value for `key` or undefined for cache miss.
+ * - `{void}` `remove({string} key)` — Removes a key-value pair from the cache.
+ * - `{void}` `removeAll()` — Removes all cached values.
+ * - `{void}` `destroy()` — Removes references to this cache from $cacheFactory.
+ *
+ * @example
+   <example module="cacheExampleApp">
+     <file name="index.html">
+       <div ng-controller="CacheController">
+         <input ng-model="newCacheKey" placeholder="Key">
+         <input ng-model="newCacheValue" placeholder="Value">
+         <button ng-click="put(newCacheKey, newCacheValue)">Cache</button>
+
+         <p ng-if="keys.length">Cached Values</p>
+         <div ng-repeat="key in keys">
+           <span ng-bind="key"></span>
+           <span>: </span>
+           <b ng-bind="cache.get(key)"></b>
+         </div>
+
+         <p>Cache Info</p>
+         <div ng-repeat="(key, value) in cache.info()">
+           <span ng-bind="key"></span>
+           <span>: </span>
+           <b ng-bind="value"></b>
+         </div>
+       </div>
+     </file>
+     <file name="script.js">
+       angular.module('cacheExampleApp', []).
+         controller('CacheController', ['$scope', '$cacheFactory', function($scope, $cacheFactory) {
+           $scope.keys = [];
+           $scope.cache = $cacheFactory('cacheId');
+           $scope.put = function(key, value) {
+             if ($scope.cache.get(key) === undefined) {
+               $scope.keys.push(key);
+             }
+             $scope.cache.put(key, value === undefined ? null : value);
+           };
+         }]);
+     </file>
+     <file name="style.css">
+       p {
+         margin: 10px 0 3px;
+       }
+     </file>
+   </example>
+ */
+function $CacheFactoryProvider() {
+
+  this.$get = function() {
+    var caches = {};
+
+    function cacheFactory(cacheId, options) {
+      if (cacheId in caches) {
+        throw minErr('$cacheFactory')('iid', "CacheId '{0}' is already taken!", cacheId);
+      }
+
+      var size = 0,
+          stats = extend({}, options, {id: cacheId}),
+          data = {},
+          capacity = (options && options.capacity) || Number.MAX_VALUE,
+          lruHash = {},
+          freshEnd = null,
+          staleEnd = null;
+
+      /**
+       * @ngdoc type
+       * @name $cacheFactory.Cache
+       *
+       * @description
+       * A cache object used to store and retrieve data, primarily used by
+       * {@link $http $http} and the {@link ng.directive:script script} directive to cache
+       * templates and other data.
+       *
+       * ```js
+       *  angular.module('superCache')
+       *    .factory('superCache', ['$cacheFactory', function($cacheFactory) {
+       *      return $cacheFactory('super-cache');
+       *    }]);
+       * ```
+       *
+       * Example test:
+       *
+       * ```js
+       *  it('should behave like a cache', inject(function(superCache) {
+       *    superCache.put('key', 'value');
+       *    superCache.put('another key', 'another value');
+       *
+       *    expect(superCache.info()).toEqual({
+       *      id: 'super-cache',
+       *      size: 2
+       *    });
+       *
+       *    superCache.remove('another key');
+       *    expect(superCache.get('another key')).toBeUndefined();
+       *
+       *    superCache.removeAll();
+       *    expect(superCache.info()).toEqual({
+       *      id: 'super-cache',
+       *      size: 0
+       *    });
+       *  }));
+       * ```
+       */
+      return caches[cacheId] = {
+
+        /**
+         * @ngdoc method
+         * @name $cacheFactory.Cache#put
+         * @kind function
+         *
+         * @description
+         * Inserts a named entry into the {@link $cacheFactory.Cache Cache} object to be
+         * retrieved later, and incrementing the size of the cache if the key was not already
+         * present in the cache. If behaving like an LRU cache, it will also remove stale
+         * entries from the set.
+         *
+         * It will not insert undefined values into the cache.
+         *
+         * @param {string} key the key under which the cached data is stored.
+         * @param {*} value the value to store alongside the key. If it is undefined, the key
+         *    will not be stored.
+         * @returns {*} the value stored.
+         */
+        put: function(key, value) {
+          if (capacity < Number.MAX_VALUE) {
+            var lruEntry = lruHash[key] || (lruHash[key] = {key: key});
+
+            refresh(lruEntry);
+          }
+
+          if (isUndefined(value)) return;
+          if (!(key in data)) size++;
+          data[key] = value;
+
+          if (size > capacity) {
+            this.remove(staleEnd.key);
+          }
+
+          return value;
+        },
+
+        /**
+         * @ngdoc method
+         * @name $cacheFactory.Cache#get
+         * @kind function
+         *
+         * @description
+         * Retrieves named data stored in the {@link $cacheFactory.Cache Cache} object.
+         *
+         * @param {string} key the key of the data to be retrieved
+         * @returns {*} the value stored.
+         */
+        get: function(key) {
+          if (capacity < Number.MAX_VALUE) {
+            var lruEntry = lruHash[key];
+
+            if (!lruEntry) return;
+
+            refresh(lruEntry);
+          }
+
+          return data[key];
+        },
+
+
+        /**
+         * @ngdoc method
+         * @name $cacheFactory.Cache#remove
+         * @kind function
+         *
+         * @description
+         * Removes an entry from the {@link $cacheFactory.Cache Cache} object.
+         *
+         * @param {string} key the key of the entry to be removed
+         */
+        remove: function(key) {
+          if (capacity < Number.MAX_VALUE) {
+            var lruEntry = lruHash[key];
+
+            if (!lruEntry) return;
+
+            if (lruEntry == freshEnd) freshEnd = lruEntry.p;
+            if (lruEntry == staleEnd) staleEnd = lruEntry.n;
+            link(lruEntry.n,lruEntry.p);
+
+            delete lruHash[key];
+          }
+
+          delete data[key];
+          size--;
+        },
+
+
+        /**
+         * @ngdoc method
+         * @name $cacheFactory.Cache#removeAll
+         * @kind function
+         *
+         * @description
+         * Clears the cache object of any entries.
+         */
+        removeAll: function() {
+          data = {};
+          size = 0;
+          lruHash = {};
+          freshEnd = staleEnd = null;
+        },
+
+
+        /**
+         * @ngdoc method
+         * @name $cacheFactory.Cache#destroy
+         * @kind function
+         *
+         * @description
+         * Destroys the {@link $cacheFactory.Cache Cache} object entirely,
+         * removing it from the {@link $cacheFactory $cacheFactory} set.
+         */
+        destroy: function() {
+          data = null;
+          stats = null;
+          lruHash = null;
+          delete caches[cacheId];
+        },
+
+
+        /**
+         * @ngdoc method
+         * @name $cacheFactory.Cache#info
+         * @kind function
+         *
+         * @description
+         * Retrieve information regarding a particular {@link $cacheFactory.Cache Cache}.
+         *
+         * @returns {object} an object with the following properties:
+         *   <ul>
+         *     <li>**id**: the id of the cache instance</li>
+         *     <li>**size**: the number of entries kept in the cache instance</li>
+         *     <li>**...**: any additional properties from the options object when creating the
+         *       cache.</li>
+         *   </ul>
+         */
+        info: function() {
+          return extend({}, stats, {size: size});
+        }
+      };
+
+
+      /**
+       * makes the `entry` the freshEnd of the LRU linked list
+       */
+      function refresh(entry) {
+        if (entry != freshEnd) {
+          if (!staleEnd) {
+            staleEnd = entry;
+          } else if (staleEnd == entry) {
+            staleEnd = entry.n;
+          }
+
+          link(entry.n, entry.p);
+          link(entry, freshEnd);
+          freshEnd = entry;
+          freshEnd.n = null;
+        }
+      }
+
+
+      /**
+       * bidirectionally links two entries of the LRU linked list
+       */
+      function link(nextEntry, prevEntry) {
+        if (nextEntry != prevEntry) {
+          if (nextEntry) nextEntry.p = prevEntry; //p stands for previous, 'prev' didn't minify
+          if (prevEntry) prevEntry.n = nextEntry; //n stands for next, 'next' didn't minify
+        }
+      }
+    }
+
+
+  /**
+   * @ngdoc method
+   * @name $cacheFactory#info
+   *
+   * @description
+   * Get information about all the caches that have been created
+   *
+   * @returns {Object} - key-value map of `cacheId` to the result of calling `cache#info`
+   */
+    cacheFactory.info = function() {
+      var info = {};
+      forEach(caches, function(cache, cacheId) {
+        info[cacheId] = cache.info();
+      });
+      return info;
+    };
+
+
+  /**
+   * @ngdoc method
+   * @name $cacheFactory#get
+   *
+   * @description
+   * Get access to a cache object by the `cacheId` used when it was created.
+   *
+   * @param {string} cacheId Name or id of a cache to access.
+   * @returns {object} Cache object identified by the cacheId or undefined if no such cache.
+   */
+    cacheFactory.get = function(cacheId) {
+      return caches[cacheId];
+    };
+
+
+    return cacheFactory;
+  };
+}
+
+/**
+ * @ngdoc service
+ * @name $templateCache
+ *
+ * @description
+ * The first time a template is used, it is loaded in the template cache for quick retrieval. You
+ * can load templates directly into the cache in a `script` tag, or by consuming the
+ * `$templateCache` service directly.
+ *
+ * Adding via the `script` tag:
+ *
+ * ```html
+ *   <script type="text/ng-template" id="templateId.html">
+ *     <p>This is the content of the template</p>
+ *   </script>
+ * ```
+ *
+ * **Note:** the `script` tag containing the template does not need to be included in the `head` of
+ * the document, but it must be a descendent of the {@link ng.$rootElement $rootElement} (IE,
+ * element with ng-app attribute), otherwise the template will be ignored.
+ *
+ * Adding via the `$templateCache` service:
+ *
+ * ```js
+ * var myApp = angular.module('myApp', []);
+ * myApp.run(function($templateCache) {
+ *   $templateCache.put('templateId.html', 'This is the content of the template');
+ * });
+ * ```
+ *
+ * To retrieve the template later, simply use it in your HTML:
+ * ```html
+ * <div ng-include=" 'templateId.html' "></div>
+ * ```
+ *
+ * or get it via Javascript:
+ * ```js
+ * $templateCache.get('templateId.html')
+ * ```
+ *
+ * See {@link ng.$cacheFactory $cacheFactory}.
+ *
+ */
+function $TemplateCacheProvider() {
+  this.$get = ['$cacheFactory', function($cacheFactory) {
+    return $cacheFactory('templates');
+  }];
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ *     Any commits to this file should be reviewed with security in mind.  *
+ *   Changes to this file can potentially create security vulnerabilities. *
+ *          An approval from 2 Core members with history of modifying      *
+ *                         this file is required.                          *
+ *                                                                         *
+ *  Does the change somehow allow for arbitrary javascript to be executed? *
+ *    Or allows for someone to change the prototype of built-in objects?   *
+ *     Or gives undesired access to variables likes document or window?    *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/* ! VARIABLE/FUNCTION NAMING CONVENTIONS THAT APPLY TO THIS FILE!
+ *
+ * DOM-related variables:
+ *
+ * - "node" - DOM Node
+ * - "element" - DOM Element or Node
+ * - "$node" or "$element" - jqLite-wrapped node or element
+ *
+ *
+ * Compiler related stuff:
+ *
+ * - "linkFn" - linking fn of a single directive
+ * - "nodeLinkFn" - function that aggregates all linking fns for a particular node
+ * - "childLinkFn" -  function that aggregates all linking fns for child nodes of a particular node
+ * - "compositeLinkFn" - function that aggregates all linking fns for a compilation root (nodeList)
+ */
+
+
+/**
+ * @ngdoc service
+ * @name $compile
+ * @kind function
+ *
+ * @description
+ * Compiles an HTML string or DOM into a template and produces a template function, which
+ * can then be used to link {@link ng.$rootScope.Scope `scope`} and the template together.
+ *
+ * The compilation is a process of walking the DOM tree and matching DOM elements to
+ * {@link ng.$compileProvider#directive directives}.
+ *
+ * <div class="alert alert-warning">
+ * **Note:** This document is an in-depth reference of all directive options.
+ * For a gentle introduction to directives with examples of common use cases,
+ * see the {@link guide/directive directive guide}.
+ * </div>
+ *
+ * ## Comprehensive Directive API
+ *
+ * There are many different options for a directive.
+ *
+ * The difference resides in the return value of the factory function.
+ * You can either return a "Directive Definition Object" (see below) that defines the directive properties,
+ * or just the `postLink` function (all other properties will have the default values).
+ *
+ * <div class="alert alert-success">
+ * **Best Practice:** It's recommended to use the "directive definition object" form.
+ * </div>
+ *
+ * Here's an example directive declared with a Directive Definition Object:
+ *
+ * ```js
+ *   var myModule = angular.module(...);
+ *
+ *   myModule.directive('directiveName', function factory(injectables) {
+ *     var directiveDefinitionObject = {
+ *       priority: 0,
+ *       template: '<div></div>', // or // function(tElement, tAttrs) { ... },
+ *       // or
+ *       // templateUrl: 'directive.html', // or // function(tElement, tAttrs) { ... },
+ *       transclude: false,
+ *       restrict: 'A',
+ *       templateNamespace: 'html',
+ *       scope: false,
+ *       controller: function($scope, $element, $attrs, $transclude, otherInjectables) { ... },
+ *       controllerAs: 'stringIdentifier',
+ *       bindToController: false,
+ *       require: 'siblingDirectiveName', // or // ['^parentDirectiveName', '?optionalDirectiveName', '?^optionalParent'],
+ *       compile: function compile(tElement, tAttrs, transclude) {
+ *         return {
+ *           pre: function preLink(scope, iElement, iAttrs, controller) { ... },
+ *           post: function postLink(scope, iElement, iAttrs, controller) { ... }
+ *         }
+ *         // or
+ *         // return function postLink( ... ) { ... }
+ *       },
+ *       // or
+ *       // link: {
+ *       //  pre: function preLink(scope, iElement, iAttrs, controller) { ... },
+ *       //  post: function postLink(scope, iElement, iAttrs, controller) { ... }
+ *       // }
+ *       // or
+ *       // link: function postLink( ... ) { ... }
+ *     };
+ *     return directiveDefinitionObject;
+ *   });
+ * ```
+ *
+ * <div class="alert alert-warning">
+ * **Note:** Any unspecified options will use the default value. You can see the default values below.
+ * </div>
+ *
+ * Therefore the above can be simplified as:
+ *
+ * ```js
+ *   var myModule = angular.module(...);
+ *
+ *   myModule.directive('directiveName', function factory(injectables) {
+ *     var directiveDefinitionObject = {
+ *       link: function postLink(scope, iElement, iAttrs) { ... }
+ *     };
+ *     return directiveDefinitionObject;
+ *     // or
+ *     // return function postLink(scope, iElement, iAttrs) { ... }
+ *   });
+ * ```
+ *
+ *
+ *
+ * ### Directive Definition Object
+ *
+ * The directive definition object provides instructions to the {@link ng.$compile
+ * compiler}. The attributes are:
+ *
+ * #### `multiElement`
+ * When this property is set to true, the HTML compiler will collect DOM nodes between
+ * nodes with the attributes `directive-name-start` and `directive-name-end`, and group them
+ * together as the directive elements. It is recommended that this feature be used on directives
+ * which are not strictly behavioural (such as {@link ngClick}), and which
+ * do not manipulate or replace child nodes (such as {@link ngInclude}).
+ *
+ * #### `priority`
+ * When there are multiple directives defined on a single DOM element, sometimes it
+ * is necessary to specify the order in which the directives are applied. The `priority` is used
+ * to sort the directives before their `compile` functions get called. Priority is defined as a
+ * number. Directives with greater numerical `priority` are compiled first. Pre-link functions
+ * are also run in priority order, but post-link functions are run in reverse order. The order
+ * of directives with the same priority is undefined. The default priority is `0`.
+ *
+ * #### `terminal`
+ * If set to true then the current `priority` will be the last set of directives
+ * which will execute (any directives at the current priority will still execute
+ * as the order of execution on same `priority` is undefined). Note that expressions
+ * and other directives used in the directive's template will also be excluded from execution.
+ *
+ * #### `scope`
+ * **If set to `true`,** then a new scope will be created for this directive. If multiple directives on the
+ * same element request a new scope, only one new scope is created. The new scope rule does not
+ * apply for the root of the template since the root of the template always gets a new scope.
+ *
+ * **If set to `{}` (object hash),** then a new "isolate" scope is created. The 'isolate' scope differs from
+ * normal scope in that it does not prototypically inherit from the parent scope. This is useful
+ * when creating reusable components, which should not accidentally read or modify data in the
+ * parent scope.
+ *
+ * The 'isolate' scope takes an object hash which defines a set of local scope properties
+ * derived from the parent scope. These local properties are useful for aliasing values for
+ * templates. Locals definition is a hash of local scope property to its source:
+ *
+ * * `@` or `@attr` - bind a local scope property to the value of DOM attribute. The result is
+ *   always a string since DOM attributes are strings. If no `attr` name is specified  then the
+ *   attribute name is assumed to be the same as the local name.
+ *   Given `<widget my-attr="hello {{name}}">` and widget definition
+ *   of `scope: { localName:'@myAttr' }`, then widget scope property `localName` will reflect
+ *   the interpolated value of `hello {{name}}`. As the `name` attribute changes so will the
+ *   `localName` property on the widget scope. The `name` is read from the parent scope (not
+ *   component scope).
+ *
+ * * `=` or `=attr` - set up bi-directional binding between a local scope property and the
+ *   parent scope property of name defined via the value of the `attr` attribute. If no `attr`
+ *   name is specified then the attribute name is assumed to be the same as the local name.
+ *   Given `<widget my-attr="parentModel">` and widget definition of
+ *   `scope: { localModel:'=myAttr' }`, then widget scope property `localModel` will reflect the
+ *   value of `parentModel` on the parent scope. Any changes to `parentModel` will be reflected
+ *   in `localModel` and any changes in `localModel` will reflect in `parentModel`. If the parent
+ *   scope property doesn't exist, it will throw a NON_ASSIGNABLE_MODEL_EXPRESSION exception. You
+ *   can avoid this behavior using `=?` or `=?attr` in order to flag the property as optional. If
+ *   you want to shallow watch for changes (i.e. $watchCollection instead of $watch) you can use
+ *   `=*` or `=*attr` (`=*?` or `=*?attr` if the property is optional).
+ *
+ * * `&` or `&attr` - provides a way to execute an expression in the context of the parent scope.
+ *   If no `attr` name is specified then the attribute name is assumed to be the same as the
+ *   local name. Given `<widget my-attr="count = count + value">` and widget definition of
+ *   `scope: { localFn:'&myAttr' }`, then isolate scope property `localFn` will point to
+ *   a function wrapper for the `count = count + value` expression. Often it's desirable to
+ *   pass data from the isolated scope via an expression to the parent scope, this can be
+ *   done by passing a map of local variable names and values into the expression wrapper fn.
+ *   For example, if the expression is `increment(amount)` then we can specify the amount value
+ *   by calling the `localFn` as `localFn({amount: 22})`.
+ *
+ *
+ * #### `bindToController`
+ * When an isolate scope is used for a component (see above), and `controllerAs` is used, `bindToController: true` will
+ * allow a component to have its properties bound to the controller, rather than to scope. When the controller
+ * is instantiated, the initial values of the isolate scope bindings are already available.
+ *
+ * #### `controller`
+ * Controller constructor function. The controller is instantiated before the
+ * pre-linking phase and it is shared with other directives (see
+ * `require` attribute). This allows the directives to communicate with each other and augment
+ * each other's behavior. The controller is injectable (and supports bracket notation) with the following locals:
+ *
+ * * `$scope` - Current scope associated with the element
+ * * `$element` - Current element
+ * * `$attrs` - Current attributes object for the element
+ * * `$transclude` - A transclude linking function pre-bound to the correct transclusion scope:
+ *   `function([scope], cloneLinkingFn, futureParentElement)`.
+ *    * `scope`: optional argument to override the scope.
+ *    * `cloneLinkingFn`: optional argument to create clones of the original transcluded content.
+ *    * `futureParentElement`:
+ *        * defines the parent to which the `cloneLinkingFn` will add the cloned elements.
+ *        * default: `$element.parent()` resp. `$element` for `transclude:'element'` resp. `transclude:true`.
+ *        * only needed for transcludes that are allowed to contain non html elements (e.g. SVG elements)
+ *          and when the `cloneLinkinFn` is passed,
+ *          as those elements need to created and cloned in a special way when they are defined outside their
+ *          usual containers (e.g. like `<svg>`).
+ *        * See also the `directive.templateNamespace` property.
+ *
+ *
+ * #### `require`
+ * Require another directive and inject its controller as the fourth argument to the linking function. The
+ * `require` takes a string name (or array of strings) of the directive(s) to pass in. If an array is used, the
+ * injected argument will be an array in corresponding order. If no such directive can be
+ * found, or if the directive does not have a controller, then an error is raised (unless no link function
+ * is specified, in which case error checking is skipped). The name can be prefixed with:
+ *
+ * * (no prefix) - Locate the required controller on the current element. Throw an error if not found.
+ * * `?` - Attempt to locate the required controller or pass `null` to the `link` fn if not found.
+ * * `^` - Locate the required controller by searching the element and its parents. Throw an error if not found.
+ * * `^^` - Locate the required controller by searching the element's parents. Throw an error if not found.
+ * * `?^` - Attempt to locate the required controller by searching the element and its parents or pass
+ *   `null` to the `link` fn if not found.
+ * * `?^^` - Attempt to locate the required controller by searching the element's parents, or pass
+ *   `null` to the `link` fn if not found.
+ *
+ *
+ * #### `controllerAs`
+ * Controller alias at the directive scope. An alias for the controller so it
+ * can be referenced at the directive template. The directive needs to define a scope for this
+ * configuration to be used. Useful in the case when directive is used as component.
+ *
+ *
+ * #### `restrict`
+ * String of subset of `EACM` which restricts the directive to a specific directive
+ * declaration style. If omitted, the defaults (elements and attributes) are used.
+ *
+ * * `E` - Element name (default): `<my-directive></my-directive>`
+ * * `A` - Attribute (default): `<div my-directive="exp"></div>`
+ * * `C` - Class: `<div class="my-directive: exp;"></div>`
+ * * `M` - Comment: `<!-- directive: my-directive exp -->`
+ *
+ *
+ * #### `templateNamespace`
+ * String representing the document type used by the markup in the template.
+ * AngularJS needs this information as those elements need to be created and cloned
+ * in a special way when they are defined outside their usual containers like `<svg>` and `<math>`.
+ *
+ * * `html` - All root nodes in the template are HTML. Root nodes may also be
+ *   top-level elements such as `<svg>` or `<math>`.
+ * * `svg` - The root nodes in the template are SVG elements (excluding `<math>`).
+ * * `math` - The root nodes in the template are MathML elements (excluding `<svg>`).
+ *
+ * If no `templateNamespace` is specified, then the namespace is considered to be `html`.
+ *
+ * #### `template`
+ * HTML markup that may:
+ * * Replace the contents of the directive's element (default).
+ * * Replace the directive's element itself (if `replace` is true - DEPRECATED).
+ * * Wrap the contents of the directive's element (if `transclude` is true).
+ *
+ * Value may be:
+ *
+ * * A string. For example `<div red-on-hover>{{delete_str}}</div>`.
+ * * A function which takes two arguments `tElement` and `tAttrs` (described in the `compile`
+ *   function api below) and returns a string value.
+ *
+ *
+ * #### `templateUrl`
+ * This is similar to `template` but the template is loaded from the specified URL, asynchronously.
+ *
+ * Because template loading is asynchronous the compiler will suspend compilation of directives on that element
+ * for later when the template has been resolved.  In the meantime it will continue to compile and link
+ * sibling and parent elements as though this element had not contained any directives.
+ *
+ * The compiler does not suspend the entire compilation to wait for templates to be loaded because this
+ * would result in the whole app "stalling" until all templates are loaded asynchronously - even in the
+ * case when only one deeply nested directive has `templateUrl`.
+ *
+ * Template loading is asynchronous even if the template has been preloaded into the {@link $templateCache}
+ *
+ * You can specify `templateUrl` as a string representing the URL or as a function which takes two
+ * arguments `tElement` and `tAttrs` (described in the `compile` function api below) and returns
+ * a string value representing the url.  In either case, the template URL is passed through {@link
+ * $sce#getTrustedResourceUrl $sce.getTrustedResourceUrl}.
+ *
+ *
+ * #### `replace` ([*DEPRECATED*!], will be removed in next major release - i.e. v2.0)
+ * specify what the template should replace. Defaults to `false`.
+ *
+ * * `true` - the template will replace the directive's element.
+ * * `false` - the template will replace the contents of the directive's element.
+ *
+ * The replacement process migrates all of the attributes / classes from the old element to the new
+ * one. See the {@link guide/directive#template-expanding-directive
+ * Directives Guide} for an example.
+ *
+ * There are very few scenarios where element replacement is required for the application function,
+ * the main one being reusable custom components that are used within SVG contexts
+ * (because SVG doesn't work with custom elements in the DOM tree).
+ *
+ * #### `transclude`
+ * Extract the contents of the element where the directive appears and make it available to the directive.
+ * The contents are compiled and provided to the directive as a **transclusion function**. See the
+ * {@link $compile#transclusion Transclusion} section below.
+ *
+ * There are two kinds of transclusion depending upon whether you want to transclude just the contents of the
+ * directive's element or the entire element:
+ *
+ * * `true` - transclude the content (i.e. the child nodes) of the directive's element.
+ * * `'element'` - transclude the whole of the directive's element including any directives on this
+ *   element that defined at a lower priority than this directive. When used, the `template`
+ *   property is ignored.
+ *
+ *
+ * #### `compile`
+ *
+ * ```js
+ *   function compile(tElement, tAttrs, transclude) { ... }
+ * ```
+ *
+ * The compile function deals with transforming the template DOM. Since most directives do not do
+ * template transformation, it is not used often. The compile function takes the following arguments:
+ *
+ *   * `tElement` - template element - The element where the directive has been declared. It is
+ *     safe to do template transformation on the element and child elements only.
+ *
+ *   * `tAttrs` - template attributes - Normalized list of attributes declared on this element shared
+ *     between all directive compile functions.
+ *
+ *   * `transclude` -  [*DEPRECATED*!] A transclude linking function: `function(scope, cloneLinkingFn)`
+ *
+ * <div class="alert alert-warning">
+ * **Note:** The template instance and the link instance may be different objects if the template has
+ * been cloned. For this reason it is **not** safe to do anything other than DOM transformations that
+ * apply to all cloned DOM nodes within the compile function. Specifically, DOM listener registration
+ * should be done in a linking function rather than in a compile function.
+ * </div>
+
+ * <div class="alert alert-warning">
+ * **Note:** The compile function cannot handle directives that recursively use themselves in their
+ * own templates or compile functions. Compiling these directives results in an infinite loop and a
+ * stack overflow errors.
+ *
+ * This can be avoided by manually using $compile in the postLink function to imperatively compile
+ * a directive's template instead of relying on automatic template compilation via `template` or
+ * `templateUrl` declaration or manual compilation inside the compile function.
+ * </div>
+ *
+ * <div class="alert alert-error">
+ * **Note:** The `transclude` function that is passed to the compile function is deprecated, as it
+ *   e.g. does not know about the right outer scope. Please use the transclude function that is passed
+ *   to the link function instead.
+ * </div>
+
+ * A compile function can have a return value which can be either a function or an object.
+ *
+ * * returning a (post-link) function - is equivalent to registering the linking function via the
+ *   `link` property of the config object when the compile function is empty.
+ *
+ * * returning an object with function(s) registered via `pre` and `post` properties - allows you to
+ *   control when a linking function should be called during the linking phase. See info about
+ *   pre-linking and post-linking functions below.
+ *
+ *
+ * #### `link`
+ * This property is used only if the `compile` property is not defined.
+ *
+ * ```js
+ *   function link(scope, iElement, iAttrs, controller, transcludeFn) { ... }
+ * ```
+ *
+ * The link function is responsible for registering DOM listeners as well as updating the DOM. It is
+ * executed after the template has been cloned. This is where most of the directive logic will be
+ * put.
+ *
+ *   * `scope` - {@link ng.$rootScope.Scope Scope} - The scope to be used by the
+ *     directive for registering {@link ng.$rootScope.Scope#$watch watches}.
+ *
+ *   * `iElement` - instance element - The element where the directive is to be used. It is safe to
+ *     manipulate the children of the element only in `postLink` function since the children have
+ *     already been linked.
+ *
+ *   * `iAttrs` - instance attributes - Normalized list of attributes declared on this element shared
+ *     between all directive linking functions.
+ *
+ *   * `controller` - the directive's required controller instance(s) - Instances are shared
+ *     among all directives, which allows the directives to use the controllers as a communication
+ *     channel. The exact value depends on the directive's `require` property:
+ *       * `string`: the controller instance
+ *       * `array`: array of controller instances
+ *       * no controller(s) required: `undefined`
+ *
+ *     If a required controller cannot be found, and it is optional, the instance is `null`,
+ *     otherwise the {@link error:$compile:ctreq Missing Required Controller} error is thrown.
+ *
+ *   * `transcludeFn` - A transclude linking function pre-bound to the correct transclusion scope.
+ *     This is the same as the `$transclude`
+ *     parameter of directive controllers, see there for details.
+ *     `function([scope], cloneLinkingFn, futureParentElement)`.
+ *
+ * #### Pre-linking function
+ *
+ * Executed before the child elements are linked. Not safe to do DOM transformation since the
+ * compiler linking function will fail to locate the correct elements for linking.
+ *
+ * #### Post-linking function
+ *
+ * Executed after the child elements are linked.
+ *
+ * Note that child elements that contain `templateUrl` directives will not have been compiled
+ * and linked since they are waiting for their template to load asynchronously and their own
+ * compilation and linking has been suspended until that occurs.
+ *
+ * It is safe to do DOM transformation in the post-linking function on elements that are not waiting
+ * for their async templates to be resolved.
+ *
+ *
+ * ### Transclusion
+ *
+ * Transclusion is the process of extracting a collection of DOM elements from one part of the DOM and
+ * copying them to another part of the DOM, while maintaining their connection to the original AngularJS
+ * scope from where they were taken.
+ *
+ * Transclusion is used (often with {@link ngTransclude}) to insert the
+ * original contents of a directive's element into a specified place in the template of the directive.
+ * The benefit of transclusion, over simply moving the DOM elements manually, is that the transcluded
+ * content has access to the properties on the scope from which it was taken, even if the directive
+ * has isolated scope.
+ * See the {@link guide/directive#creating-a-directive-that-wraps-other-elements Directives Guide}.
+ *
+ * This makes it possible for the widget to have private state for its template, while the transcluded
+ * content has access to its originating scope.
+ *
+ * <div class="alert alert-warning">
+ * **Note:** When testing an element transclude directive you must not place the directive at the root of the
+ * DOM fragment that is being compiled. See {@link guide/unit-testing#testing-transclusion-directives
+ * Testing Transclusion Directives}.
+ * </div>
+ *
+ * #### Transclusion Functions
+ *
+ * When a directive requests transclusion, the compiler extracts its contents and provides a **transclusion
+ * function** to the directive's `link` function and `controller`. This transclusion function is a special
+ * **linking function** that will return the compiled contents linked to a new transclusion scope.
+ *
+ * <div class="alert alert-info">
+ * If you are just using {@link ngTransclude} then you don't need to worry about this function, since
+ * ngTransclude will deal with it for us.
+ * </div>
+ *
+ * If you want to manually control the insertion and removal of the transcluded content in your directive
+ * then you must use this transclude function. When you call a transclude function it returns a a jqLite/JQuery
+ * object that contains the compiled DOM, which is linked to the correct transclusion scope.
+ *
+ * When you call a transclusion function you can pass in a **clone attach function**. This function accepts
+ * two parameters, `function(clone, scope) { ... }`, where the `clone` is a fresh compiled copy of your transcluded
+ * content and the `scope` is the newly created transclusion scope, to which the clone is bound.
+ *
+ * <div class="alert alert-info">
+ * **Best Practice**: Always provide a `cloneFn` (clone attach function) when you call a translude function
+ * since you then get a fresh clone of the original DOM and also have access to the new transclusion scope.
+ * </div>
+ *
+ * It is normal practice to attach your transcluded content (`clone`) to the DOM inside your **clone
+ * attach function**:
+ *
+ * ```js
+ * var transcludedContent, transclusionScope;
+ *
+ * $transclude(function(clone, scope) {
+ *   element.append(clone);
+ *   transcludedContent = clone;
+ *   transclusionScope = scope;
+ * });
+ * ```
+ *
+ * Later, if you want to remove the transcluded content from your DOM then you should also destroy the
+ * associated transclusion scope:
+ *
+ * ```js
+ * transcludedContent.remove();
+ * transclusionScope.$destroy();
+ * ```
+ *
+ * <div class="alert alert-info">
+ * **Best Practice**: if you intend to add and remove transcluded content manually in your directive
+ * (by calling the transclude function to get the DOM and and calling `element.remove()` to remove it),
+ * then you are also responsible for calling `$destroy` on the transclusion scope.
+ * </div>
+ *
+ * The built-in DOM manipulation directives, such as {@link ngIf}, {@link ngSwitch} and {@link ngRepeat}
+ * automatically destroy their transluded clones as necessary so you do not need to worry about this if
+ * you are simply using {@link ngTransclude} to inject the transclusion into your directive.
+ *
+ *
+ * #### Transclusion Scopes
+ *
+ * When you call a transclude function it returns a DOM fragment that is pre-bound to a **transclusion
+ * scope**. This scope is special, in that it is a child of the directive's scope (and so gets destroyed
+ * when the directive's scope gets destroyed) but it inherits the properties of the scope from which it
+ * was taken.
+ *
+ * For example consider a directive that uses transclusion and isolated scope. The DOM hierarchy might look
+ * like this:
+ *
+ * ```html
+ * <div ng-app>
+ *   <div isolate>
+ *     <div transclusion>
+ *     </div>
+ *   </div>
+ * </div>
+ * ```
+ *
+ * The `$parent` scope hierarchy will look like this:
+ *
+ * ```
+ * - $rootScope
+ *   - isolate
+ *     - transclusion
+ * ```
+ *
+ * but the scopes will inherit prototypically from different scopes to their `$parent`.
+ *
+ * ```
+ * - $rootScope
+ *   - transclusion
+ * - isolate
+ * ```
+ *
+ *
+ * ### Attributes
+ *
+ * The {@link ng.$compile.directive.Attributes Attributes} object - passed as a parameter in the
+ * `link()` or `compile()` functions. It has a variety of uses.
+ *
+ * accessing *Normalized attribute names:*
+ * Directives like 'ngBind' can be expressed in many ways: 'ng:bind', `data-ng-bind`, or 'x-ng-bind'.
+ * the attributes object allows for normalized access to
+ *   the attributes.
+ *
+ * * *Directive inter-communication:* All directives share the same instance of the attributes
+ *   object which allows the directives to use the attributes object as inter directive
+ *   communication.
+ *
+ * * *Supports interpolation:* Interpolation attributes are assigned to the attribute object
+ *   allowing other directives to read the interpolated value.
+ *
+ * * *Observing interpolated attributes:* Use `$observe` to observe the value changes of attributes
+ *   that contain interpolation (e.g. `src="{{bar}}"`). Not only is this very efficient but it's also
+ *   the only way to easily get the actual value because during the linking phase the interpolation
+ *   hasn't been evaluated yet and so the value is at this time set to `undefined`.
+ *
+ * ```js
+ * function linkingFn(scope, elm, attrs, ctrl) {
+ *   // get the attribute value
+ *   console.log(attrs.ngModel);
+ *
+ *   // change the attribute
+ *   attrs.$set('ngModel', 'new value');
+ *
+ *   // observe changes to interpolated attribute
+ *   attrs.$observe('ngModel', function(value) {
+ *     console.log('ngModel has changed value to ' + value);
+ *   });
+ * }
+ * ```
+ *
+ * ## Example
+ *
+ * <div class="alert alert-warning">
+ * **Note**: Typically directives are registered with `module.directive`. The example below is
+ * to illustrate how `$compile` works.
+ * </div>
+ *
+ <example module="compileExample">
+   <file name="index.html">
+    <script>
+      angular.module('compileExample', [], function($compileProvider) {
+        // configure new 'compile' directive by passing a directive
+        // factory function. The factory function injects the '$compile'
+        $compileProvider.directive('compile', function($compile) {
+          // directive factory creates a link function
+          return function(scope, element, attrs) {
+            scope.$watch(
+              function(scope) {
+                 // watch the 'compile' expression for changes
+                return scope.$eval(attrs.compile);
+              },
+              function(value) {
+                // when the 'compile' expression changes
+                // assign it into the current DOM
+                element.html(value);
+
+                // compile the new DOM and link it to the current
+                // scope.
+                // NOTE: we only compile .childNodes so that
+                // we don't get into infinite loop compiling ourselves
+                $compile(element.contents())(scope);
+              }
+            );
+          };
+        });
+      })
+      .controller('GreeterController', ['$scope', function($scope) {
+        $scope.name = 'Angular';
+        $scope.html = 'Hello {{name}}';
+      }]);
+    </script>
+    <div ng-controller="GreeterController">
+      <input ng-model="name"> <br>
+      <textarea ng-model="html"></textarea> <br>
+      <div compile="html"></div>
+    </div>
+   </file>
+   <file name="protractor.js" type="protractor">
+     it('should auto compile', function() {
+       var textarea = $('textarea');
+       var output = $('div[compile]');
+       // The initial state reads 'Hello Angular'.
+       expect(output.getText()).toBe('Hello Angular');
+       textarea.clear();
+       textarea.sendKeys('{{name}}!');
+       expect(output.getText()).toBe('Angular!');
+     });
+   </file>
+ </example>
+
+ *
+ *
+ * @param {string|DOMElement} element Element or HTML string to compile into a template function.
+ * @param {function(angular.Scope, cloneAttachFn=)} transclude function available to directives - DEPRECATED.
+ *
+ * <div class="alert alert-error">
+ * **Note:** Passing a `transclude` function to the $compile function is deprecated, as it
+ *   e.g. will not use the right outer scope. Please pass the transclude function as a
+ *   `parentBoundTranscludeFn` to the link function instead.
+ * </div>
+ *
+ * @param {number} maxPriority only apply directives lower than given priority (Only effects the
+ *                 root element(s), not their children)
+ * @returns {function(scope, cloneAttachFn=, options=)} a link function which is used to bind template
+ * (a DOM element/tree) to a scope. Where:
+ *
+ *  * `scope` - A {@link ng.$rootScope.Scope Scope} to bind to.
+ *  * `cloneAttachFn` - If `cloneAttachFn` is provided, then the link function will clone the
+ *  `template` and call the `cloneAttachFn` function allowing the caller to attach the
+ *  cloned elements to the DOM document at the appropriate place. The `cloneAttachFn` is
+ *  called as: <br> `cloneAttachFn(clonedElement, scope)` where:
+ *
+ *      * `clonedElement` - is a clone of the original `element` passed into the compiler.
+ *      * `scope` - is the current scope with which the linking function is working with.
+ *
+ *  * `options` - An optional object hash with linking options. If `options` is provided, then the following
+ *  keys may be used to control linking behavior:
+ *
+ *      * `parentBoundTranscludeFn` - the transclude function made available to
+ *        directives; if given, it will be passed through to the link functions of
+ *        directives found in `element` during compilation.
+ *      * `transcludeControllers` - an object hash with keys that map controller names
+ *        to controller instances; if given, it will make the controllers
+ *        available to directives.
+ *      * `futureParentElement` - defines the parent to which the `cloneAttachFn` will add
+ *        the cloned elements; only needed for transcludes that are allowed to contain non html
+ *        elements (e.g. SVG elements). See also the directive.controller property.
+ *
+ * Calling the linking function returns the element of the template. It is either the original
+ * element passed in, or the clone of the element if the `cloneAttachFn` is provided.
+ *
+ * After linking the view is not updated until after a call to $digest which typically is done by
+ * Angular automatically.
+ *
+ * If you need access to the bound view, there are two ways to do it:
+ *
+ * - If you are not asking the linking function to clone the template, create the DOM element(s)
+ *   before you send them to the compiler and keep this reference around.
+ *   ```js
+ *     var element = $compile('<p>{{total}}</p>')(scope);
+ *   ```
+ *
+ * - if on the other hand, you need the element to be cloned, the view reference from the original
+ *   example would not point to the clone, but rather to the original template that was cloned. In
+ *   this case, you can access the clone via the cloneAttachFn:
+ *   ```js
+ *     var templateElement = angular.element('<p>{{total}}</p>'),
+ *         scope = ....;
+ *
+ *     var clonedElement = $compile(templateElement)(scope, function(clonedElement, scope) {
+ *       //attach the clone to DOM document at the right place
+ *     });
+ *
+ *     //now we have reference to the cloned DOM via `clonedElement`
+ *   ```
+ *
+ *
+ * For information on how the compiler works, see the
+ * {@link guide/compiler Angular HTML Compiler} section of the Developer Guide.
+ */
+
+var $compileMinErr = minErr('$compile');
+
+/**
+ * @ngdoc provider
+ * @name $compileProvider
+ *
+ * @description
+ */
+$CompileProvider.$inject = ['$provide', '$$sanitizeUriProvider'];
+function $CompileProvider($provide, $$sanitizeUriProvider) {
+  var hasDirectives = {},
+      Suffix = 'Directive',
+      COMMENT_DIRECTIVE_REGEXP = /^\s*directive\:\s*([\w\-]+)\s+(.*)$/,
+      CLASS_DIRECTIVE_REGEXP = /(([\w\-]+)(?:\:([^;]+))?;?)/,
+      ALL_OR_NOTHING_ATTRS = makeMap('ngSrc,ngSrcset,src,srcset'),
+      REQUIRE_PREFIX_REGEXP = /^(?:(\^\^?)?(\?)?(\^\^?)?)?/;
+
+  // Ref: http://developers.whatwg.org/webappapis.html#event-handler-idl-attributes
+  // The assumption is that future DOM event attribute names will begin with
+  // 'on' and be composed of only English letters.
+  var EVENT_HANDLER_ATTR_REGEXP = /^(on[a-z]+|formaction)$/;
+
+  function parseIsolateBindings(scope, directiveName) {
+    var LOCAL_REGEXP = /^\s*([@&]|=(\*?))(\??)\s*(\w*)\s*$/;
+
+    var bindings = {};
+
+    forEach(scope, function(definition, scopeName) {
+      var match = definition.match(LOCAL_REGEXP);
+
+      if (!match) {
+        throw $compileMinErr('iscp',
+            "Invalid isolate scope definition for directive '{0}'." +
+            " Definition: {... {1}: '{2}' ...}",
+            directiveName, scopeName, definition);
+      }
+
+      bindings[scopeName] = {
+        mode: match[1][0],
+        collection: match[2] === '*',
+        optional: match[3] === '?',
+        attrName: match[4] || scopeName
+      };
+    });
+
+    return bindings;
+  }
+
+  /**
+   * @ngdoc method
+   * @name $compileProvider#directive
+   * @kind function
+   *
+   * @description
+   * Register a new directive with the compiler.
+   *
+   * @param {string|Object} name Name of the directive in camel-case (i.e. <code>ngBind</code> which
+   *    will match as <code>ng-bind</code>), or an object map of directives where the keys are the
+   *    names and the values are the factories.
+   * @param {Function|Array} directiveFactory An injectable directive factory function. See
+   *    {@link guide/directive} for more info.
+   * @returns {ng.$compileProvider} Self for chaining.
+   */
+   this.directive = function registerDirective(name, directiveFactory) {
+    assertNotHasOwnProperty(name, 'directive');
+    if (isString(name)) {
+      assertArg(directiveFactory, 'directiveFactory');
+      if (!hasDirectives.hasOwnProperty(name)) {
+        hasDirectives[name] = [];
+        $provide.factory(name + Suffix, ['$injector', '$exceptionHandler',
+          function($injector, $exceptionHandler) {
+            var directives = [];
+            forEach(hasDirectives[name], function(directiveFactory, index) {
+              try {
+                var directive = $injector.invoke(directiveFactory);
+                if (isFunction(directive)) {
+                  directive = { compile: valueFn(directive) };
+                } else if (!directive.compile && directive.link) {
+                  directive.compile = valueFn(directive.link);
+                }
+                directive.priority = directive.priority || 0;
+                directive.index = index;
+                directive.name = directive.name || name;
+                directive.require = directive.require || (directive.controller && directive.name);
+                directive.restrict = directive.restrict || 'EA';
+                if (isObject(directive.scope)) {
+                  directive.$$isolateBindings = parseIsolateBindings(directive.scope, directive.name);
+                }
+                directives.push(directive);
+              } catch (e) {
+                $exceptionHandler(e);
+              }
+            });
+            return directives;
+          }]);
+      }
+      hasDirectives[name].push(directiveFactory);
+    } else {
+      forEach(name, reverseParams(registerDirective));
+    }
+    return this;
+  };
+
+
+  /**
+   * @ngdoc method
+   * @name $compileProvider#aHrefSanitizationWhitelist
+   * @kind function
+   *
+   * @description
+   * Retrieves or overrides the default regular expression that is used for whitelisting of safe
+   * urls during a[href] sanitization.
+   *
+   * The sanitization is a security measure aimed at preventing XSS attacks via html links.
+   *
+   * Any url about to be assigned to a[href] via data-binding is first normalized and turned into
+   * an absolute url. Afterwards, the url is matched against the `aHrefSanitizationWhitelist`
+   * regular expression. If a match is found, the original url is written into the dom. Otherwise,
+   * the absolute url is prefixed with `'unsafe:'` string and only then is it written into the DOM.
+   *
+   * @param {RegExp=} regexp New regexp to whitelist urls with.
+   * @returns {RegExp|ng.$compileProvider} Current RegExp if called without value or self for
+   *    chaining otherwise.
+   */
+  this.aHrefSanitizationWhitelist = function(regexp) {
+    if (isDefined(regexp)) {
+      $$sanitizeUriProvider.aHrefSanitizationWhitelist(regexp);
+      return this;
+    } else {
+      return $$sanitizeUriProvider.aHrefSanitizationWhitelist();
+    }
+  };
+
+
+  /**
+   * @ngdoc method
+   * @name $compileProvider#imgSrcSanitizationWhitelist
+   * @kind function
+   *
+   * @description
+   * Retrieves or overrides the default regular expression that is used for whitelisting of safe
+   * urls during img[src] sanitization.
+   *
+   * The sanitization is a security measure aimed at prevent XSS attacks via html links.
+   *
+   * Any url about to be assigned to img[src] via data-binding is first normalized and turned into
+   * an absolute url. Afterwards, the url is matched against the `imgSrcSanitizationWhitelist`
+   * regular expression. If a match is found, the original url is written into the dom. Otherwise,
+   * the absolute url is prefixed with `'unsafe:'` string and only then is it written into the DOM.
+   *
+   * @param {RegExp=} regexp New regexp to whitelist urls with.
+   * @returns {RegExp|ng.$compileProvider} Current RegExp if called without value or self for
+   *    chaining otherwise.
+   */
+  this.imgSrcSanitizationWhitelist = function(regexp) {
+    if (isDefined(regexp)) {
+      $$sanitizeUriProvider.imgSrcSanitizationWhitelist(regexp);
+      return this;
+    } else {
+      return $$sanitizeUriProvider.imgSrcSanitizationWhitelist();
+    }
+  };
+
+  /**
+   * @ngdoc method
+   * @name  $compileProvider#debugInfoEnabled
+   *
+   * @param {boolean=} enabled update the debugInfoEnabled state if provided, otherwise just return the
+   * current debugInfoEnabled state
+   * @returns {*} current value if used as getter or itself (chaining) if used as setter
+   *
+   * @kind function
+   *
+   * @description
+   * Call this method to enable/disable various debug runtime information in the compiler such as adding
+   * binding information and a reference to the current scope on to DOM elements.
+   * If enabled, the compiler will add the following to DOM elements that have been bound to the scope
+   * * `ng-binding` CSS class
+   * * `$binding` data property containing an array of the binding expressions
+   *
+   * You may want to disable this in production for a significant performance boost. See
+   * {@link guide/production#disabling-debug-data Disabling Debug Data} for more.
+   *
+   * The default value is true.
+   */
+  var debugInfoEnabled = true;
+  this.debugInfoEnabled = function(enabled) {
+    if (isDefined(enabled)) {
+      debugInfoEnabled = enabled;
+      return this;
+    }
+    return debugInfoEnabled;
+  };
+
+  this.$get = [
+            '$injector', '$interpolate', '$exceptionHandler', '$templateRequest', '$parse',
+            '$controller', '$rootScope', '$document', '$sce', '$animate', '$$sanitizeUri',
+    function($injector,   $interpolate,   $exceptionHandler,   $templateRequest,   $parse,
+             $controller,   $rootScope,   $document,   $sce,   $animate,   $$sanitizeUri) {
+
+    var Attributes = function(element, attributesToCopy) {
+      if (attributesToCopy) {
+        var keys = Object.keys(attributesToCopy);
+        var i, l, key;
+
+        for (i = 0, l = keys.length; i < l; i++) {
+          key = keys[i];
+          this[key] = attributesToCopy[key];
+        }
+      } else {
+        this.$attr = {};
+      }
+
+      this.$$element = element;
+    };
+
+    Attributes.prototype = {
+      /**
+       * @ngdoc method
+       * @name $compile.directive.Attributes#$normalize
+       * @kind function
+       *
+       * @description
+       * Converts an attribute name (e.g. dash/colon/underscore-delimited string, optionally prefixed with `x-` or
+       * `data-`) to its normalized, camelCase form.
+       *
+       * Also there is special case for Moz prefix starting with upper case letter.
+       *
+       * For further information check out the guide on {@link guide/directive#matching-directives Matching Directives}
+       *
+       * @param {string} name Name to normalize
+       */
+      $normalize: directiveNormalize,
+
+
+      /**
+       * @ngdoc method
+       * @name $compile.directive.Attributes#$addClass
+       * @kind function
+       *
+       * @description
+       * Adds the CSS class value specified by the classVal parameter to the element. If animations
+       * are enabled then an animation will be triggered for the class addition.
+       *
+       * @param {string} classVal The className value that will be added to the element
+       */
+      $addClass: function(classVal) {
+        if (classVal && classVal.length > 0) {
+          $animate.addClass(this.$$element, classVal);
+        }
+      },
+
+      /**
+       * @ngdoc method
+       * @name $compile.directive.Attributes#$removeClass
+       * @kind function
+       *
+       * @description
+       * Removes the CSS class value specified by the classVal parameter from the element. If
+       * animations are enabled then an animation will be triggered for the class removal.
+       *
+       * @param {string} classVal The className value that will be removed from the element
+       */
+      $removeClass: function(classVal) {
+        if (classVal && classVal.length > 0) {
+          $animate.removeClass(this.$$element, classVal);
+        }
+      },
+
+      /**
+       * @ngdoc method
+       * @name $compile.directive.Attributes#$updateClass
+       * @kind function
+       *
+       * @description
+       * Adds and removes the appropriate CSS class values to the element based on the difference
+       * between the new and old CSS class values (specified as newClasses and oldClasses).
+       *
+       * @param {string} newClasses The current CSS className value
+       * @param {string} oldClasses The former CSS className value
+       */
+      $updateClass: function(newClasses, oldClasses) {
+        var toAdd = tokenDifference(newClasses, oldClasses);
+        if (toAdd && toAdd.length) {
+          $animate.addClass(this.$$element, toAdd);
+        }
+
+        var toRemove = tokenDifference(oldClasses, newClasses);
+        if (toRemove && toRemove.length) {
+          $animate.removeClass(this.$$element, toRemove);
+        }
+      },
+
+      /**
+       * Set a normalized attribute on the element in a way such that all directives
+       * can share the attribute. This function properly handles boolean attributes.
+       * @param {string} key Normalized key. (ie ngAttribute)
+       * @param {string|boolean} value The value to set. If `null` attribute will be deleted.
+       * @param {boolean=} writeAttr If false, does not write the value to DOM element attribute.
+       *     Defaults to true.
+       * @param {string=} attrName Optional none normalized name. Defaults to key.
+       */
+      $set: function(key, value, writeAttr, attrName) {
+        // TODO: decide whether or not to throw an error if "class"
+        //is set through this function since it may cause $updateClass to
+        //become unstable.
+
+        var node = this.$$element[0],
+            booleanKey = getBooleanAttrName(node, key),
+            aliasedKey = getAliasedAttrName(node, key),
+            observer = key,
+            nodeName;
+
+        if (booleanKey) {
+          this.$$element.prop(key, value);
+          attrName = booleanKey;
+        } else if (aliasedKey) {
+          this[aliasedKey] = value;
+          observer = aliasedKey;
+        }
+
+        this[key] = value;
+
+        // translate normalized key to actual key
+        if (attrName) {
+          this.$attr[key] = attrName;
+        } else {
+          attrName = this.$attr[key];
+          if (!attrName) {
+            this.$attr[key] = attrName = snake_case(key, '-');
+          }
+        }
+
+        nodeName = nodeName_(this.$$element);
+
+        if ((nodeName === 'a' && key === 'href') ||
+            (nodeName === 'img' && key === 'src')) {
+          // sanitize a[href] and img[src] values
+          this[key] = value = $$sanitizeUri(value, key === 'src');
+        } else if (nodeName === 'img' && key === 'srcset') {
+          // sanitize img[srcset] values
+          var result = "";
+
+          // first check if there are spaces because it's not the same pattern
+          var trimmedSrcset = trim(value);
+          //                (   999x   ,|   999w   ,|   ,|,   )
+          var srcPattern = /(\s+\d+x\s*,|\s+\d+w\s*,|\s+,|,\s+)/;
+          var pattern = /\s/.test(trimmedSrcset) ? srcPattern : /(,)/;
+
+          // split srcset into tuple of uri and descriptor except for the last item
+          var rawUris = trimmedSrcset.split(pattern);
+
+          // for each tuples
+          var nbrUrisWith2parts = Math.floor(rawUris.length / 2);
+          for (var i = 0; i < nbrUrisWith2parts; i++) {
+            var innerIdx = i * 2;
+            // sanitize the uri
+            result += $$sanitizeUri(trim(rawUris[innerIdx]), true);
+            // add the descriptor
+            result += (" " + trim(rawUris[innerIdx + 1]));
+          }
+
+          // split the last item into uri and descriptor
+          var lastTuple = trim(rawUris[i * 2]).split(/\s/);
+
+          // sanitize the last uri
+          result += $$sanitizeUri(trim(lastTuple[0]), true);
+
+          // and add the last descriptor if any
+          if (lastTuple.length === 2) {
+            result += (" " + trim(lastTuple[1]));
+          }
+          this[key] = value = result;
+        }
+
+        if (writeAttr !== false) {
+          if (value === null || value === undefined) {
+            this.$$element.removeAttr(attrName);
+          } else {
+            this.$$element.attr(attrName, value);
+          }
+        }
+
+        // fire observers
+        var $$observers = this.$$observers;
+        $$observers && forEach($$observers[observer], function(fn) {
+          try {
+            fn(value);
+          } catch (e) {
+            $exceptionHandler(e);
+          }
+        });
+      },
+
+
+      /**
+       * @ngdoc method
+       * @name $compile.directive.Attributes#$observe
+       * @kind function
+       *
+       * @description
+       * Observes an interpolated attribute.
+       *
+       * The observer function will be invoked once during the next `$digest` following
+       * compilation. The observer is then invoked whenever the interpolated value
+       * changes.
+       *
+       * @param {string} key Normalized key. (ie ngAttribute) .
+       * @param {function(interpolatedValue)} fn Function that will be called whenever
+                the interpolated value of the attribute changes.
+       *        See the {@link guide/directive#text-and-attribute-bindings Directives} guide for more info.
+       * @returns {function()} Returns a deregistration function for this observer.
+       */
+      $observe: function(key, fn) {
+        var attrs = this,
+            $$observers = (attrs.$$observers || (attrs.$$observers = createMap())),
+            listeners = ($$observers[key] || ($$observers[key] = []));
+
+        listeners.push(fn);
+        $rootScope.$evalAsync(function() {
+          if (!listeners.$$inter && attrs.hasOwnProperty(key)) {
+            // no one registered attribute interpolation function, so lets call it manually
+            fn(attrs[key]);
+          }
+        });
+
+        return function() {
+          arrayRemove(listeners, fn);
+        };
+      }
+    };
+
+
+    function safeAddClass($element, className) {
+      try {
+        $element.addClass(className);
+      } catch (e) {
+        // ignore, since it means that we are trying to set class on
+        // SVG element, where class name is read-only.
+      }
+    }
+
+
+    var startSymbol = $interpolate.startSymbol(),
+        endSymbol = $interpolate.endSymbol(),
+        denormalizeTemplate = (startSymbol == '{{' || endSymbol  == '}}')
+            ? identity
+            : function denormalizeTemplate(template) {
+              return template.replace(/\{\{/g, startSymbol).replace(/}}/g, endSymbol);
+        },
+        NG_ATTR_BINDING = /^ngAttr[A-Z]/;
+
+    compile.$$addBindingInfo = debugInfoEnabled ? function $$addBindingInfo($element, binding) {
+      var bindings = $element.data('$binding') || [];
+
+      if (isArray(binding)) {
+        bindings = bindings.concat(binding);
+      } else {
+        bindings.push(binding);
+      }
+
+      $element.data('$binding', bindings);
+    } : noop;
+
+    compile.$$addBindingClass = debugInfoEnabled ? function $$addBindingClass($element) {
+      safeAddClass($element, 'ng-binding');
+    } : noop;
+
+    compile.$$addScopeInfo = debugInfoEnabled ? function $$addScopeInfo($element, scope, isolated, noTemplate) {
+      var dataName = isolated ? (noTemplate ? '$isolateScopeNoTemplate' : '$isolateScope') : '$scope';
+      $element.data(dataName, scope);
+    } : noop;
+
+    compile.$$addScopeClass = debugInfoEnabled ? function $$addScopeClass($element, isolated) {
+      safeAddClass($element, isolated ? 'ng-isolate-scope' : 'ng-scope');
+    } : noop;
+
+    return compile;
+
+    //================================
+
+    function compile($compileNodes, transcludeFn, maxPriority, ignoreDirective,
+                        previousCompileContext) {
+      if (!($compileNodes instanceof jqLite)) {
+        // jquery always rewraps, whereas we need to preserve the original selector so that we can
+        // modify it.
+        $compileNodes = jqLite($compileNodes);
+      }
+      // We can not compile top level text elements since text nodes can be merged and we will
+      // not be able to attach scope data to them, so we will wrap them in <span>
+      forEach($compileNodes, function(node, index) {
+        if (node.nodeType == NODE_TYPE_TEXT && node.nodeValue.match(/\S+/) /* non-empty */ ) {
+          $compileNodes[index] = jqLite(node).wrap('<span></span>').parent()[0];
+        }
+      });
+      var compositeLinkFn =
+              compileNodes($compileNodes, transcludeFn, $compileNodes,
+                           maxPriority, ignoreDirective, previousCompileContext);
+      compile.$$addScopeClass($compileNodes);
+      var namespace = null;
+      return function publicLinkFn(scope, cloneConnectFn, options) {
+        assertArg(scope, 'scope');
+
+        options = options || {};
+        var parentBoundTranscludeFn = options.parentBoundTranscludeFn,
+          transcludeControllers = options.transcludeControllers,
+          futureParentElement = options.futureParentElement;
+
+        // When `parentBoundTranscludeFn` is passed, it is a
+        // `controllersBoundTransclude` function (it was previously passed
+        // as `transclude` to directive.link) so we must unwrap it to get
+        // its `boundTranscludeFn`
+        if (parentBoundTranscludeFn && parentBoundTranscludeFn.$$boundTransclude) {
+          parentBoundTranscludeFn = parentBoundTranscludeFn.$$boundTransclude;
+        }
+
+        if (!namespace) {
+          namespace = detectNamespaceForChildElements(futureParentElement);
+        }
+        var $linkNode;
+        if (namespace !== 'html') {
+          // When using a directive with replace:true and templateUrl the $compileNodes
+          // (or a child element inside of them)
+          // might change, so we need to recreate the namespace adapted compileNodes
+          // for call to the link function.
+          // Note: This will already clone the nodes...
+          $linkNode = jqLite(
+            wrapTemplate(namespace, jqLite('<div>').append($compileNodes).html())
+          );
+        } else if (cloneConnectFn) {
+          // important!!: we must call our jqLite.clone() since the jQuery one is trying to be smart
+          // and sometimes changes the structure of the DOM.
+          $linkNode = JQLitePrototype.clone.call($compileNodes);
+        } else {
+          $linkNode = $compileNodes;
+        }
+
+        if (transcludeControllers) {
+          for (var controllerName in transcludeControllers) {
+            $linkNode.data('$' + controllerName + 'Controller', transcludeControllers[controllerName].instance);
+          }
+        }
+
+        compile.$$addScopeInfo($linkNode, scope);
+
+        if (cloneConnectFn) cloneConnectFn($linkNode, scope);
+        if (compositeLinkFn) compositeLinkFn(scope, $linkNode, $linkNode, parentBoundTranscludeFn);
+        return $linkNode;
+      };
+    }
+
+    function detectNamespaceForChildElements(parentElement) {
+      // TODO: Make this detect MathML as well...
+      var node = parentElement && parentElement[0];
+      if (!node) {
+        return 'html';
+      } else {
+        return nodeName_(node) !== 'foreignobject' && node.toString().match(/SVG/) ? 'svg' : 'html';
+      }
+    }
+
+    /**
+     * Compile function matches each node in nodeList against the directives. Once all directives
+     * for a particular node are collected their compile functions are executed. The compile
+     * functions return values - the linking functions - are combined into a composite linking
+     * function, which is the a linking function for the node.
+     *
+     * @param {NodeList} nodeList an array of nodes or NodeList to compile
+     * @param {function(angular.Scope, cloneAttachFn=)} transcludeFn A linking function, where the
+     *        scope argument is auto-generated to the new child of the transcluded parent scope.
+     * @param {DOMElement=} $rootElement If the nodeList is the root of the compilation tree then
+     *        the rootElement must be set the jqLite collection of the compile root. This is
+     *        needed so that the jqLite collection items can be replaced with widgets.
+     * @param {number=} maxPriority Max directive priority.
+     * @returns {Function} A composite linking function of all of the matched directives or null.
+     */
+    function compileNodes(nodeList, transcludeFn, $rootElement, maxPriority, ignoreDirective,
+                            previousCompileContext) {
+      var linkFns = [],
+          attrs, directives, nodeLinkFn, childNodes, childLinkFn, linkFnFound, nodeLinkFnFound;
+
+      for (var i = 0; i < nodeList.length; i++) {
+        attrs = new Attributes();
+
+        // we must always refer to nodeList[i] since the nodes can be replaced underneath us.
+        directives = collectDirectives(nodeList[i], [], attrs, i === 0 ? maxPriority : undefined,
+                                        ignoreDirective);
+
+        nodeLinkFn = (directives.length)
+            ? applyDirectivesToNode(directives, nodeList[i], attrs, transcludeFn, $rootElement,
+                                      null, [], [], previousCompileContext)
+            : null;
+
+        if (nodeLinkFn && nodeLinkFn.scope) {
+          compile.$$addScopeClass(attrs.$$element);
+        }
+
+        childLinkFn = (nodeLinkFn && nodeLinkFn.terminal ||
+                      !(childNodes = nodeList[i].childNodes) ||
+                      !childNodes.length)
+            ? null
+            : compileNodes(childNodes,
+                 nodeLinkFn ? (
+                  (nodeLinkFn.transcludeOnThisElement || !nodeLinkFn.templateOnThisElement)
+                     && nodeLinkFn.transclude) : transcludeFn);
+
+        if (nodeLinkFn || childLinkFn) {
+          linkFns.push(i, nodeLinkFn, childLinkFn);
+          linkFnFound = true;
+          nodeLinkFnFound = nodeLinkFnFound || nodeLinkFn;
+        }
+
+        //use the previous context only for the first element in the virtual group
+        previousCompileContext = null;
+      }
+
+      // return a linking function if we have found anything, null otherwise
+      return linkFnFound ? compositeLinkFn : null;
+
+      function compositeLinkFn(scope, nodeList, $rootElement, parentBoundTranscludeFn) {
+        var nodeLinkFn, childLinkFn, node, childScope, i, ii, idx, childBoundTranscludeFn;
+        var stableNodeList;
+
+
+        if (nodeLinkFnFound) {
+          // copy nodeList so that if a nodeLinkFn removes or adds an element at this DOM level our
+          // offsets don't get screwed up
+          var nodeListLength = nodeList.length;
+          stableNodeList = new Array(nodeListLength);
+
+          // create a sparse array by only copying the elements which have a linkFn
+          for (i = 0; i < linkFns.length; i+=3) {
+            idx = linkFns[i];
+            stableNodeList[idx] = nodeList[idx];
+          }
+        } else {
+          stableNodeList = nodeList;
+        }
+
+        for (i = 0, ii = linkFns.length; i < ii;) {
+          node = stableNodeList[linkFns[i++]];
+          nodeLinkFn = linkFns[i++];
+          childLinkFn = linkFns[i++];
+
+          if (nodeLinkFn) {
+            if (nodeLinkFn.scope) {
+              childScope = scope.$new();
+              compile.$$addScopeInfo(jqLite(node), childScope);
+            } else {
+              childScope = scope;
+            }
+
+            if (nodeLinkFn.transcludeOnThisElement) {
+              childBoundTranscludeFn = createBoundTranscludeFn(
+                  scope, nodeLinkFn.transclude, parentBoundTranscludeFn,
+                  nodeLinkFn.elementTranscludeOnThisElement);
+
+            } else if (!nodeLinkFn.templateOnThisElement && parentBoundTranscludeFn) {
+              childBoundTranscludeFn = parentBoundTranscludeFn;
+
+            } else if (!parentBoundTranscludeFn && transcludeFn) {
+              childBoundTranscludeFn = createBoundTranscludeFn(scope, transcludeFn);
+
+            } else {
+              childBoundTranscludeFn = null;
+            }
+
+            nodeLinkFn(childLinkFn, childScope, node, $rootElement, childBoundTranscludeFn);
+
+          } else if (childLinkFn) {
+            childLinkFn(scope, node.childNodes, undefined, parentBoundTranscludeFn);
+          }
+        }
+      }
+    }
+
+    function createBoundTranscludeFn(scope, transcludeFn, previousBoundTranscludeFn, elementTransclusion) {
+
+      var boundTranscludeFn = function(transcludedScope, cloneFn, controllers, futureParentElement, containingScope) {
+
+        if (!transcludedScope) {
+          transcludedScope = scope.$new(false, containingScope);
+          transcludedScope.$$transcluded = true;
+        }
+
+        return transcludeFn(transcludedScope, cloneFn, {
+          parentBoundTranscludeFn: previousBoundTranscludeFn,
+          transcludeControllers: controllers,
+          futureParentElement: futureParentElement
+        });
+      };
+
+      return boundTranscludeFn;
+    }
+
+    /**
+     * Looks for directives on the given node and adds them to the directive collection which is
+     * sorted.
+     *
+     * @param node Node to search.
+     * @param directives An array to which the directives are added to. This array is sorted before
+     *        the function returns.
+     * @param attrs The shared attrs object which is used to populate the normalized attributes.
+     * @param {number=} maxPriority Max directive priority.
+     */
+    function collectDirectives(node, directives, attrs, maxPriority, ignoreDirective) {
+      var nodeType = node.nodeType,
+          attrsMap = attrs.$attr,
+          match,
+          className;
+
+      switch (nodeType) {
+        case NODE_TYPE_ELEMENT: /* Element */
+          // use the node name: <directive>
+          addDirective(directives,
+              directiveNormalize(nodeName_(node)), 'E', maxPriority, ignoreDirective);
+
+          // iterate over the attributes
+          for (var attr, name, nName, ngAttrName, value, isNgAttr, nAttrs = node.attributes,
+                   j = 0, jj = nAttrs && nAttrs.length; j < jj; j++) {
+            var attrStartName = false;
+            var attrEndName = false;
+
+            attr = nAttrs[j];
+            name = attr.name;
+            value = trim(attr.value);
+
+            // support ngAttr attribute binding
+            ngAttrName = directiveNormalize(name);
+            if (isNgAttr = NG_ATTR_BINDING.test(ngAttrName)) {
+              name = name.replace(PREFIX_REGEXP, '')
+                .substr(8).replace(/_(.)/g, function(match, letter) {
+                  return letter.toUpperCase();
+                });
+            }
+
+            var directiveNName = ngAttrName.replace(/(Start|End)$/, '');
+            if (directiveIsMultiElement(directiveNName)) {
+              if (ngAttrName === directiveNName + 'Start') {
+                attrStartName = name;
+                attrEndName = name.substr(0, name.length - 5) + 'end';
+                name = name.substr(0, name.length - 6);
+              }
+            }
+
+            nName = directiveNormalize(name.toLowerCase());
+            attrsMap[nName] = name;
+            if (isNgAttr || !attrs.hasOwnProperty(nName)) {
+                attrs[nName] = value;
+                if (getBooleanAttrName(node, nName)) {
+                  attrs[nName] = true; // presence means true
+                }
+            }
+            addAttrInterpolateDirective(node, directives, value, nName, isNgAttr);
+            addDirective(directives, nName, 'A', maxPriority, ignoreDirective, attrStartName,
+                          attrEndName);
+          }
+
+          // use class as directive
+          className = node.className;
+          if (isObject(className)) {
+              // Maybe SVGAnimatedString
+              className = className.animVal;
+          }
+          if (isString(className) && className !== '') {
+            while (match = CLASS_DIRECTIVE_REGEXP.exec(className)) {
+              nName = directiveNormalize(match[2]);
+              if (addDirective(directives, nName, 'C', maxPriority, ignoreDirective)) {
+                attrs[nName] = trim(match[3]);
+              }
+              className = className.substr(match.index + match[0].length);
+            }
+          }
+          break;
+        case NODE_TYPE_TEXT: /* Text Node */
+          addTextInterpolateDirective(directives, node.nodeValue);
+          break;
+        case NODE_TYPE_COMMENT: /* Comment */
+          try {
+            match = COMMENT_DIRECTIVE_REGEXP.exec(node.nodeValue);
+            if (match) {
+              nName = directiveNormalize(match[1]);
+              if (addDirective(directives, nName, 'M', maxPriority, ignoreDirective)) {
+                attrs[nName] = trim(match[2]);
+              }
+            }
+          } catch (e) {
+            // turns out that under some circumstances IE9 throws errors when one attempts to read
+            // comment's node value.
+            // Just ignore it and continue. (Can't seem to reproduce in test case.)
+          }
+          break;
+      }
+
+      directives.sort(byPriority);
+      return directives;
+    }
+
+    /**
+     * Given a node with an directive-start it collects all of the siblings until it finds
+     * directive-end.
+     * @param node
+     * @param attrStart
+     * @param attrEnd
+     * @returns {*}
+     */
+    function groupScan(node, attrStart, attrEnd) {
+      var nodes = [];
+      var depth = 0;
+      if (attrStart && node.hasAttribute && node.hasAttribute(attrStart)) {
+        do {
+          if (!node) {
+            throw $compileMinErr('uterdir',
+                      "Unterminated attribute, found '{0}' but no matching '{1}' found.",
+                      attrStart, attrEnd);
+          }
+          if (node.nodeType == NODE_TYPE_ELEMENT) {
+            if (node.hasAttribute(attrStart)) depth++;
+            if (node.hasAttribute(attrEnd)) depth--;
+          }
+          nodes.push(node);
+          node = node.nextSibling;
+        } while (depth > 0);
+      } else {
+        nodes.push(node);
+      }
+
+      return jqLite(nodes);
+    }
+
+    /**
+     * Wrapper for linking function which converts normal linking function into a grouped
+     * linking function.
+     * @param linkFn
+     * @param attrStart
+     * @param attrEnd
+     * @returns {Function}
+     */
+    function groupElementsLinkFnWrapper(linkFn, attrStart, attrEnd) {
+      return function(scope, element, attrs, controllers, transcludeFn) {
+        element = groupScan(element[0], attrStart, attrEnd);
+        return linkFn(scope, element, attrs, controllers, transcludeFn);
+      };
+    }
+
+    /**
+     * Once the directives have been collected, their compile functions are executed. This method
+     * is responsible for inlining directive templates as well as terminating the application
+     * of the directives if the terminal directive has been reached.
+     *
+     * @param {Array} directives Array of collected directives to execute their compile function.
+     *        this needs to be pre-sorted by priority order.
+     * @param {Node} compileNode The raw DOM node to apply the compile functions to
+     * @param {Object} templateAttrs The shared attribute function
+     * @param {function(angular.Scope, cloneAttachFn=)} transcludeFn A linking function, where the
+     *                                                  scope argument is auto-generated to the new
+     *                                                  child of the transcluded parent scope.
+     * @param {JQLite} jqCollection If we are working on the root of the compile tree then this
+     *                              argument has the root jqLite array so that we can replace nodes
+     *                              on it.
+     * @param {Object=} originalReplaceDirective An optional directive that will be ignored when
+     *                                           compiling the transclusion.
+     * @param {Array.<Function>} preLinkFns
+     * @param {Array.<Function>} postLinkFns
+     * @param {Object} previousCompileContext Context used for previous compilation of the current
+     *                                        node
+     * @returns {Function} linkFn
+     */
+    function applyDirectivesToNode(directives, compileNode, templateAttrs, transcludeFn,
+                                   jqCollection, originalReplaceDirective, preLinkFns, postLinkFns,
+                                   previousCompileContext) {
+      previousCompileContext = previousCompileContext || {};
+
+      var terminalPriority = -Number.MAX_VALUE,
+          newScopeDirective,
+          controllerDirectives = previousCompileContext.controllerDirectives,
+          controllers,
+          newIsolateScopeDirective = previousCompileContext.newIsolateScopeDirective,
+          templateDirective = previousCompileContext.templateDirective,
+          nonTlbTranscludeDirective = previousCompileContext.nonTlbTranscludeDirective,
+          hasTranscludeDirective = false,
+          hasTemplate = false,
+          hasElementTranscludeDirective = previousCompileContext.hasElementTranscludeDirective,
+          $compileNode = templateAttrs.$$element = jqLite(compileNode),
+          directive,
+          directiveName,
+          $template,
+          replaceDirective = originalReplaceDirective,
+          childTranscludeFn = transcludeFn,
+          linkFn,
+          directiveValue;
+
+      // executes all directives on the current element
+      for (var i = 0, ii = directives.length; i < ii; i++) {
+        directive = directives[i];
+        var attrStart = directive.$$start;
+        var attrEnd = directive.$$end;
+
+        // collect multiblock sections
+        if (attrStart) {
+          $compileNode = groupScan(compileNode, attrStart, attrEnd);
+        }
+        $template = undefined;
+
+        if (terminalPriority > directive.priority) {
+          break; // prevent further processing of directives
+        }
+
+        if (directiveValue = directive.scope) {
+
+          // skip the check for directives with async templates, we'll check the derived sync
+          // directive when the template arrives
+          if (!directive.templateUrl) {
+            if (isObject(directiveValue)) {
+              // This directive is trying to add an isolated scope.
+              // Check that there is no scope of any kind already
+              assertNoDuplicate('new/isolated scope', newIsolateScopeDirective || newScopeDirective,
+                                directive, $compileNode);
+              newIsolateScopeDirective = directive;
+            } else {
+              // This directive is trying to add a child scope.
+              // Check that there is no isolated scope already
+              assertNoDuplicate('new/isolated scope', newIsolateScopeDirective, directive,
+                                $compileNode);
+            }
+          }
+
+          newScopeDirective = newScopeDirective || directive;
+        }
+
+        directiveName = directive.name;
+
+        if (!directive.templateUrl && directive.controller) {
+          directiveValue = directive.controller;
+          controllerDirectives = controllerDirectives || {};
+          assertNoDuplicate("'" + directiveName + "' controller",
+              controllerDirectives[directiveName], directive, $compileNode);
+          controllerDirectives[directiveName] = directive;
+        }
+
+        if (directiveValue = directive.transclude) {
+          hasTranscludeDirective = true;
+
+          // Special case ngIf and ngRepeat so that we don't complain about duplicate transclusion.
+          // This option should only be used by directives that know how to safely handle element transclusion,
+          // where the transcluded nodes are added or replaced after linking.
+          if (!directive.$$tlb) {
+            assertNoDuplicate('transclusion', nonTlbTranscludeDirective, directive, $compileNode);
+            nonTlbTranscludeDirective = directive;
+          }
+
+          if (directiveValue == 'element') {
+            hasElementTranscludeDirective = true;
+            terminalPriority = directive.priority;
+            $template = $compileNode;
+            $compileNode = templateAttrs.$$element =
+                jqLite(document.createComment(' ' + directiveName + ': ' +
+                                              templateAttrs[directiveName] + ' '));
+            compileNode = $compileNode[0];
+            replaceWith(jqCollection, sliceArgs($template), compileNode);
+
+            childTranscludeFn = compile($template, transcludeFn, terminalPriority,
+                                        replaceDirective && replaceDirective.name, {
+                                          // Don't pass in:
+                                          // - controllerDirectives - otherwise we'll create duplicates controllers
+                                          // - newIsolateScopeDirective or templateDirective - combining templates with
+                                          //   element transclusion doesn't make sense.
+                                          //
+                                          // We need only nonTlbTranscludeDirective so that we prevent putting transclusion
+                                          // on the same element more than once.
+                                          nonTlbTranscludeDirective: nonTlbTranscludeDirective
+                                        });
+          } else {
+            $template = jqLite(jqLiteClone(compileNode)).contents();
+            $compileNode.empty(); // clear contents
+            childTranscludeFn = compile($template, transcludeFn);
+          }
+        }
+
+        if (directive.template) {
+          hasTemplate = true;
+          assertNoDuplicate('template', templateDirective, directive, $compileNode);
+          templateDirective = directive;
+
+          directiveValue = (isFunction(directive.template))
+              ? directive.template($compileNode, templateAttrs)
+              : directive.template;
+
+          directiveValue = denormalizeTemplate(directiveValue);
+
+          if (directive.replace) {
+            replaceDirective = directive;
+            if (jqLiteIsTextNode(directiveValue)) {
+              $template = [];
+            } else {
+              $template = removeComments(wrapTemplate(directive.templateNamespace, trim(directiveValue)));
+            }
+            compileNode = $template[0];
+
+            if ($template.length != 1 || compileNode.nodeType !== NODE_TYPE_ELEMENT) {
+              throw $compileMinErr('tplrt',
+                  "Template for directive '{0}' must have exactly one root element. {1}",
+                  directiveName, '');
+            }
+
+            replaceWith(jqCollection, $compileNode, compileNode);
+
+            var newTemplateAttrs = {$attr: {}};
+
+            // combine directives from the original node and from the template:
+            // - take the array of directives for this element
+            // - split it into two parts, those that already applied (processed) and those that weren't (unprocessed)
+            // - collect directives from the template and sort them by priority
+            // - combine directives as: processed + template + unprocessed
+            var templateDirectives = collectDirectives(compileNode, [], newTemplateAttrs);
+            var unprocessedDirectives = directives.splice(i + 1, directives.length - (i + 1));
+
+            if (newIsolateScopeDirective) {
+              markDirectivesAsIsolate(templateDirectives);
+            }
+            directives = directives.concat(templateDirectives).concat(unprocessedDirectives);
+            mergeTemplateAttributes(templateAttrs, newTemplateAttrs);
+
+            ii = directives.length;
+          } else {
+            $compileNode.html(directiveValue);
+          }
+        }
+
+        if (directive.templateUrl) {
+          hasTemplate = true;
+          assertNoDuplicate('template', templateDirective, directive, $compileNode);
+          templateDirective = directive;
+
+          if (directive.replace) {
+            replaceDirective = directive;
+          }
+
+          nodeLinkFn = compileTemplateUrl(directives.splice(i, directives.length - i), $compileNode,
+              templateAttrs, jqCollection, hasTranscludeDirective && childTranscludeFn, preLinkFns, postLinkFns, {
+                controllerDirectives: controllerDirectives,
+                newIsolateScopeDirective: newIsolateScopeDirective,
+                templateDirective: templateDirective,
+                nonTlbTranscludeDirective: nonTlbTranscludeDirective
+              });
+          ii = directives.length;
+        } else if (directive.compile) {
+          try {
+            linkFn = directive.compile($compileNode, templateAttrs, childTranscludeFn);
+            if (isFunction(linkFn)) {
+              addLinkFns(null, linkFn, attrStart, attrEnd);
+            } else if (linkFn) {
+              addLinkFns(linkFn.pre, linkFn.post, attrStart, attrEnd);
+            }
+          } catch (e) {
+            $exceptionHandler(e, startingTag($compileNode));
+          }
+        }
+
+        if (directive.terminal) {
+          nodeLinkFn.terminal = true;
+          terminalPriority = Math.max(terminalPriority, directive.priority);
+        }
+
+      }
+
+      nodeLinkFn.scope = newScopeDirective && newScopeDirective.scope === true;
+      nodeLinkFn.transcludeOnThisElement = hasTranscludeDirective;
+      nodeLinkFn.elementTranscludeOnThisElement = hasElementTranscludeDirective;
+      nodeLinkFn.templateOnThisElement = hasTemplate;
+      nodeLinkFn.transclude = childTranscludeFn;
+
+      previousCompileContext.hasElementTranscludeDirective = hasElementTranscludeDirective;
+
+      // might be normal or delayed nodeLinkFn depending on if templateUrl is present
+      return nodeLinkFn;
+
+      ////////////////////
+
+      function addLinkFns(pre, post, attrStart, attrEnd) {
+        if (pre) {
+          if (attrStart) pre = groupElementsLinkFnWrapper(pre, attrStart, attrEnd);
+          pre.require = directive.require;
+          pre.directiveName = directiveName;
+          if (newIsolateScopeDirective === directive || directive.$$isolateScope) {
+            pre = cloneAndAnnotateFn(pre, {isolateScope: true});
+          }
+          preLinkFns.push(pre);
+        }
+        if (post) {
+          if (attrStart) post = groupElementsLinkFnWrapper(post, attrStart, attrEnd);
+          post.require = directive.require;
+          post.directiveName = directiveName;
+          if (newIsolateScopeDirective === directive || directive.$$isolateScope) {
+            post = cloneAndAnnotateFn(post, {isolateScope: true});
+          }
+          postLinkFns.push(post);
+        }
+      }
+
+
+      function getControllers(directiveName, require, $element, elementControllers) {
+        var value, retrievalMethod = 'data', optional = false;
+        var $searchElement = $element;
+        var match;
+        if (isString(require)) {
+          match = require.match(REQUIRE_PREFIX_REGEXP);
+          require = require.substring(match[0].length);
+
+          if (match[3]) {
+            if (match[1]) match[3] = null;
+            else match[1] = match[3];
+          }
+          if (match[1] === '^') {
+            retrievalMethod = 'inheritedData';
+          } else if (match[1] === '^^') {
+            retrievalMethod = 'inheritedData';
+            $searchElement = $element.parent();
+          }
+          if (match[2] === '?') {
+            optional = true;
+          }
+
+          value = null;
+
+          if (elementControllers && retrievalMethod === 'data') {
+            if (value = elementControllers[require]) {
+              value = value.instance;
+            }
+          }
+          value = value || $searchElement[retrievalMethod]('$' + require + 'Controller');
+
+          if (!value && !optional) {
+            throw $compileMinErr('ctreq',
+                "Controller '{0}', required by directive '{1}', can't be found!",
+                require, directiveName);
+          }
+          return value || null;
+        } else if (isArray(require)) {
+          value = [];
+          forEach(require, function(require) {
+            value.push(getControllers(directiveName, require, $element, elementControllers));
+          });
+        }
+        return value;
+      }
+
+
+      function nodeLinkFn(childLinkFn, scope, linkNode, $rootElement, boundTranscludeFn) {
+        var i, ii, linkFn, controller, isolateScope, elementControllers, transcludeFn, $element,
+            attrs;
+
+        if (compileNode === linkNode) {
+          attrs = templateAttrs;
+          $element = templateAttrs.$$element;
+        } else {
+          $element = jqLite(linkNode);
+          attrs = new Attributes($element, templateAttrs);
+        }
+
+        if (newIsolateScopeDirective) {
+          isolateScope = scope.$new(true);
+        }
+
+        if (boundTranscludeFn) {
+          // track `boundTranscludeFn` so it can be unwrapped if `transcludeFn`
+          // is later passed as `parentBoundTranscludeFn` to `publicLinkFn`
+          transcludeFn = controllersBoundTransclude;
+          transcludeFn.$$boundTransclude = boundTranscludeFn;
+        }
+
+        if (controllerDirectives) {
+          // TODO: merge `controllers` and `elementControllers` into single object.
+          controllers = {};
+          elementControllers = {};
+          forEach(controllerDirectives, function(directive) {
+            var locals = {
+              $scope: directive === newIsolateScopeDirective || directive.$$isolateScope ? isolateScope : scope,
+              $element: $element,
+              $attrs: attrs,
+              $transclude: transcludeFn
+            }, controllerInstance;
+
+            controller = directive.controller;
+            if (controller == '@') {
+              controller = attrs[directive.name];
+            }
+
+            controllerInstance = $controller(controller, locals, true, directive.controllerAs);
+
+            // For directives with element transclusion the element is a comment,
+            // but jQuery .data doesn't support attaching data to comment nodes as it's hard to
+            // clean up (http://bugs.jquery.com/ticket/8335).
+            // Instead, we save the controllers for the element in a local hash and attach to .data
+            // later, once we have the actual element.
+            elementControllers[directive.name] = controllerInstance;
+            if (!hasElementTranscludeDirective) {
+              $element.data('$' + directive.name + 'Controller', controllerInstance.instance);
+            }
+
+            controllers[directive.name] = controllerInstance;
+          });
+        }
+
+        if (newIsolateScopeDirective) {
+          compile.$$addScopeInfo($element, isolateScope, true, !(templateDirective && (templateDirective === newIsolateScopeDirective ||
+              templateDirective === newIsolateScopeDirective.$$originalDirective)));
+          compile.$$addScopeClass($element, true);
+
+          var isolateScopeController = controllers && controllers[newIsolateScopeDirective.name];
+          var isolateBindingContext = isolateScope;
+          if (isolateScopeController && isolateScopeController.identifier &&
+              newIsolateScopeDirective.bindToController === true) {
+            isolateBindingContext = isolateScopeController.instance;
+          }
+
+          forEach(isolateScope.$$isolateBindings = newIsolateScopeDirective.$$isolateBindings, function(definition, scopeName) {
+            var attrName = definition.attrName,
+                optional = definition.optional,
+                mode = definition.mode, // @, =, or &
+                lastValue,
+                parentGet, parentSet, compare;
+
+            switch (mode) {
+
+              case '@':
+                attrs.$observe(attrName, function(value) {
+                  isolateBindingContext[scopeName] = value;
+                });
+                attrs.$$observers[attrName].$$scope = scope;
+                if (attrs[attrName]) {
+                  // If the attribute has been provided then we trigger an interpolation to ensure
+                  // the value is there for use in the link fn
+                  isolateBindingContext[scopeName] = $interpolate(attrs[attrName])(scope);
+                }
+                break;
+
+              case '=':
+                if (optional && !attrs[attrName]) {
+                  return;
+                }
+                parentGet = $parse(attrs[attrName]);
+                if (parentGet.literal) {
+                  compare = equals;
+                } else {
+                  compare = function(a, b) { return a === b || (a !== a && b !== b); };
+                }
+                parentSet = parentGet.assign || function() {
+                  // reset the change, or we will throw this exception on every $digest
+                  lastValue = isolateBindingContext[scopeName] = parentGet(scope);
+                  throw $compileMinErr('nonassign',
+                      "Expression '{0}' used with directive '{1}' is non-assignable!",
+                      attrs[attrName], newIsolateScopeDirective.name);
+                };
+                lastValue = isolateBindingContext[scopeName] = parentGet(scope);
+                var parentValueWatch = function parentValueWatch(parentValue) {
+                  if (!compare(parentValue, isolateBindingContext[scopeName])) {
+                    // we are out of sync and need to copy
+                    if (!compare(parentValue, lastValue)) {
+                      // parent changed and it has precedence
+                      isolateBindingContext[scopeName] = parentValue;
+                    } else {
+                      // if the parent can be assigned then do so
+                      parentSet(scope, parentValue = isolateBindingContext[scopeName]);
+                    }
+                  }
+                  return lastValue = parentValue;
+                };
+                parentValueWatch.$stateful = true;
+                var unwatch;
+                if (definition.collection) {
+                  unwatch = scope.$watchCollection(attrs[attrName], parentValueWatch);
+                } else {
+                  unwatch = scope.$watch($parse(attrs[attrName], parentValueWatch), null, parentGet.literal);
+                }
+                isolateScope.$on('$destroy', unwatch);
+                break;
+
+              case '&':
+                parentGet = $parse(attrs[attrName]);
+                isolateBindingContext[scopeName] = function(locals) {
+                  return parentGet(scope, locals);
+                };
+                break;
+            }
+          });
+        }
+        if (controllers) {
+          forEach(controllers, function(controller) {
+            controller();
+          });
+          controllers = null;
+        }
+
+        // PRELINKING
+        for (i = 0, ii = preLinkFns.length; i < ii; i++) {
+          linkFn = preLinkFns[i];
+          invokeLinkFn(linkFn,
+              linkFn.isolateScope ? isolateScope : scope,
+              $element,
+              attrs,
+              linkFn.require && getControllers(linkFn.directiveName, linkFn.require, $element, elementControllers),
+              transcludeFn
+          );
+        }
+
+        // RECURSION
+        // We only pass the isolate scope, if the isolate directive has a template,
+        // otherwise the child elements do not belong to the isolate directive.
+        var scopeToChild = scope;
+        if (newIsolateScopeDirective && (newIsolateScopeDirective.template || newIsolateScopeDirective.templateUrl === null)) {
+          scopeToChild = isolateScope;
+        }
+        childLinkFn && childLinkFn(scopeToChild, linkNode.childNodes, undefined, boundTranscludeFn);
+
+        // POSTLINKING
+        for (i = postLinkFns.length - 1; i >= 0; i--) {
+          linkFn = postLinkFns[i];
+          invokeLinkFn(linkFn,
+              linkFn.isolateScope ? isolateScope : scope,
+              $element,
+              attrs,
+              linkFn.require && getControllers(linkFn.directiveName, linkFn.require, $element, elementControllers),
+              transcludeFn
+          );
+        }
+
+        // This is the function that is injected as `$transclude`.
+        // Note: all arguments are optional!
+        function controllersBoundTransclude(scope, cloneAttachFn, futureParentElement) {
+          var transcludeControllers;
+
+          // No scope passed in:
+          if (!isScope(scope)) {
+            futureParentElement = cloneAttachFn;
+            cloneAttachFn = scope;
+            scope = undefined;
+          }
+
+          if (hasElementTranscludeDirective) {
+            transcludeControllers = elementControllers;
+          }
+          if (!futureParentElement) {
+            futureParentElement = hasElementTranscludeDirective ? $element.parent() : $element;
+          }
+          return boundTranscludeFn(scope, cloneAttachFn, transcludeControllers, futureParentElement, scopeToChild);
+        }
+      }
+    }
+
+    function markDirectivesAsIsolate(directives) {
+      // mark all directives as needing isolate scope.
+      for (var j = 0, jj = directives.length; j < jj; j++) {
+        directives[j] = inherit(directives[j], {$$isolateScope: true});
+      }
+    }
+
+    /**
+     * looks up the directive and decorates it with exception handling and proper parameters. We
+     * call this the boundDirective.
+     *
+     * @param {string} name name of the directive to look up.
+     * @param {string} location The directive must be found in specific format.
+     *   String containing any of theses characters:
+     *
+     *   * `E`: element name
+     *   * `A': attribute
+     *   * `C`: class
+     *   * `M`: comment
+     * @returns {boolean} true if directive was added.
+     */
+    function addDirective(tDirectives, name, location, maxPriority, ignoreDirective, startAttrName,
+                          endAttrName) {
+      if (name === ignoreDirective) return null;
+      var match = null;
+      if (hasDirectives.hasOwnProperty(name)) {
+        for (var directive, directives = $injector.get(name + Suffix),
+            i = 0, ii = directives.length; i < ii; i++) {
+          try {
+            directive = directives[i];
+            if ((maxPriority === undefined || maxPriority > directive.priority) &&
+                 directive.restrict.indexOf(location) != -1) {
+              if (startAttrName) {
+                directive = inherit(directive, {$$start: startAttrName, $$end: endAttrName});
+              }
+              tDirectives.push(directive);
+              match = directive;
+            }
+          } catch (e) { $exceptionHandler(e); }
+        }
+      }
+      return match;
+    }
+
+
+    /**
+     * looks up the directive and returns true if it is a multi-element directive,
+     * and therefore requires DOM nodes between -start and -end markers to be grouped
+     * together.
+     *
+     * @param {string} name name of the directive to look up.
+     * @returns true if directive was registered as multi-element.
+     */
+    function directiveIsMultiElement(name) {
+      if (hasDirectives.hasOwnProperty(name)) {
+        for (var directive, directives = $injector.get(name + Suffix),
+            i = 0, ii = directives.length; i < ii; i++) {
+          directive = directives[i];
+          if (directive.multiElement) {
+            return true;
+          }
+        }
+      }
+      return false;
+    }
+
+    /**
+     * When the element is replaced with HTML template then the new attributes
+     * on the template need to be merged with the existing attributes in the DOM.
+     * The desired effect is to have both of the attributes present.
+     *
+     * @param {object} dst destination attributes (original DOM)
+     * @param {object} src source attributes (from the directive template)
+     */
+    function mergeTemplateAttributes(dst, src) {
+      var srcAttr = src.$attr,
+          dstAttr = dst.$attr,
+          $element = dst.$$element;
+
+      // reapply the old attributes to the new element
+      forEach(dst, function(value, key) {
+        if (key.charAt(0) != '$') {
+          if (src[key] && src[key] !== value) {
+            value += (key === 'style' ? ';' : ' ') + src[key];
+          }
+          dst.$set(key, value, true, srcAttr[key]);
+        }
+      });
+
+      // copy the new attributes on the old attrs object
+      forEach(src, function(value, key) {
+        if (key == 'class') {
+          safeAddClass($element, value);
+          dst['class'] = (dst['class'] ? dst['class'] + ' ' : '') + value;
+        } else if (key == 'style') {
+          $element.attr('style', $element.attr('style') + ';' + value);
+          dst['style'] = (dst['style'] ? dst['style'] + ';' : '') + value;
+          // `dst` will never contain hasOwnProperty as DOM parser won't let it.
+          // You will get an "InvalidCharacterError: DOM Exception 5" error if you
+          // have an attribute like "has-own-property" or "data-has-own-property", etc.
+        } else if (key.charAt(0) != '$' && !dst.hasOwnProperty(key)) {
+          dst[key] = value;
+          dstAttr[key] = srcAttr[key];
+        }
+      });
+    }
+
+
+    function compileTemplateUrl(directives, $compileNode, tAttrs,
+        $rootElement, childTranscludeFn, preLinkFns, postLinkFns, previousCompileContext) {
+      var linkQueue = [],
+          afterTemplateNodeLinkFn,
+          afterTemplateChildLinkFn,
+          beforeTemplateCompileNode = $compileNode[0],
+          origAsyncDirective = directives.shift(),
+          derivedSyncDirective = inherit(origAsyncDirective, {
+            templateUrl: null, transclude: null, replace: null, $$originalDirective: origAsyncDirective
+          }),
+          templateUrl = (isFunction(origAsyncDirective.templateUrl))
+              ? origAsyncDirective.templateUrl($compileNode, tAttrs)
+              : origAsyncDirective.templateUrl,
+          templateNamespace = origAsyncDirective.templateNamespace;
+
+      $compileNode.empty();
+
+      $templateRequest(templateUrl)
+        .then(function(content) {
+          var compileNode, tempTemplateAttrs, $template, childBoundTranscludeFn;
+
+          content = denormalizeTemplate(content);
+
+          if (origAsyncDirective.replace) {
+            if (jqLiteIsTextNode(content)) {
+              $template = [];
+            } else {
+              $template = removeComments(wrapTemplate(templateNamespace, trim(content)));
+            }
+            compileNode = $template[0];
+
+            if ($template.length != 1 || compileNode.nodeType !== NODE_TYPE_ELEMENT) {
+              throw $compileMinErr('tplrt',
+                  "Template for directive '{0}' must have exactly one root element. {1}",
+                  origAsyncDirective.name, templateUrl);
+            }
+
+            tempTemplateAttrs = {$attr: {}};
+            replaceWith($rootElement, $compileNode, compileNode);
+            var templateDirectives = collectDirectives(compileNode, [], tempTemplateAttrs);
+
+            if (isObject(origAsyncDirective.scope)) {
+              markDirectivesAsIsolate(templateDirectives);
+            }
+            directives = templateDirectives.concat(directives);
+            mergeTemplateAttributes(tAttrs, tempTemplateAttrs);
+          } else {
+            compileNode = beforeTemplateCompileNode;
+            $compileNode.html(content);
+          }
+
+          directives.unshift(derivedSyncDirective);
+
+          afterTemplateNodeLinkFn = applyDirectivesToNode(directives, compileNode, tAttrs,
+              childTranscludeFn, $compileNode, origAsyncDirective, preLinkFns, postLinkFns,
+              previousCompileContext);
+          forEach($rootElement, function(node, i) {
+            if (node == compileNode) {
+              $rootElement[i] = $compileNode[0];
+            }
+          });
+          afterTemplateChildLinkFn = compileNodes($compileNode[0].childNodes, childTranscludeFn);
+
+          while (linkQueue.length) {
+            var scope = linkQueue.shift(),
+                beforeTemplateLinkNode = linkQueue.shift(),
+                linkRootElement = linkQueue.shift(),
+                boundTranscludeFn = linkQueue.shift(),
+                linkNode = $compileNode[0];
+
+            if (scope.$$destroyed) continue;
+
+            if (beforeTemplateLinkNode !== beforeTemplateCompileNode) {
+              var oldClasses = beforeTemplateLinkNode.className;
+
+              if (!(previousCompileContext.hasElementTranscludeDirective &&
+                  origAsyncDirective.replace)) {
+                // it was cloned therefore we have to clone as well.
+                linkNode = jqLiteClone(compileNode);
+              }
+              replaceWith(linkRootElement, jqLite(beforeTemplateLinkNode), linkNode);
+
+              // Copy in CSS classes from original node
+              safeAddClass(jqLite(linkNode), oldClasses);
+            }
+            if (afterTemplateNodeLinkFn.transcludeOnThisElement) {
+              childBoundTranscludeFn = createBoundTranscludeFn(scope, afterTemplateNodeLinkFn.transclude, boundTranscludeFn);
+            } else {
+              childBoundTranscludeFn = boundTranscludeFn;
+            }
+            afterTemplateNodeLinkFn(afterTemplateChildLinkFn, scope, linkNode, $rootElement,
+              childBoundTranscludeFn);
+          }
+          linkQueue = null;
+        });
+
+      return function delayedNodeLinkFn(ignoreChildLinkFn, scope, node, rootElement, boundTranscludeFn) {
+        var childBoundTranscludeFn = boundTranscludeFn;
+        if (scope.$$destroyed) return;
+        if (linkQueue) {
+          linkQueue.push(scope,
+                         node,
+                         rootElement,
+                         childBoundTranscludeFn);
+        } else {
+          if (afterTemplateNodeLinkFn.transcludeOnThisElement) {
+            childBoundTranscludeFn = createBoundTranscludeFn(scope, afterTemplateNodeLinkFn.transclude, boundTranscludeFn);
+          }
+          afterTemplateNodeLinkFn(afterTemplateChildLinkFn, scope, node, rootElement, childBoundTranscludeFn);
+        }
+      };
+    }
+
+
+    /**
+     * Sorting function for bound directives.
+     */
+    function byPriority(a, b) {
+      var diff = b.priority - a.priority;
+      if (diff !== 0) return diff;
+      if (a.name !== b.name) return (a.name < b.name) ? -1 : 1;
+      return a.index - b.index;
+    }
+
+
+    function assertNoDuplicate(what, previousDirective, directive, element) {
+      if (previousDirective) {
+        throw $compileMinErr('multidir', 'Multiple directives [{0}, {1}] asking for {2} on: {3}',
+            previousDirective.name, directive.name, what, startingTag(element));
+      }
+    }
+
+
+    function addTextInterpolateDirective(directives, text) {
+      var interpolateFn = $interpolate(text, true);
+      if (interpolateFn) {
+        directives.push({
+          priority: 0,
+          compile: function textInterpolateCompileFn(templateNode) {
+            var templateNodeParent = templateNode.parent(),
+                hasCompileParent = !!templateNodeParent.length;
+
+            // When transcluding a template that has bindings in the root
+            // we don't have a parent and thus need to add the class during linking fn.
+            if (hasCompileParent) compile.$$addBindingClass(templateNodeParent);
+
+            return function textInterpolateLinkFn(scope, node) {
+              var parent = node.parent();
+              if (!hasCompileParent) compile.$$addBindingClass(parent);
+              compile.$$addBindingInfo(parent, interpolateFn.expressions);
+              scope.$watch(interpolateFn, function interpolateFnWatchAction(value) {
+                node[0].nodeValue = value;
+              });
+            };
+          }
+        });
+      }
+    }
+
+
+    function wrapTemplate(type, template) {
+      type = lowercase(type || 'html');
+      switch (type) {
+      case 'svg':
+      case 'math':
+        var wrapper = document.createElement('div');
+        wrapper.innerHTML = '<' + type + '>' + template + '</' + type + '>';
+        return wrapper.childNodes[0].childNodes;
+      default:
+        return template;
+      }
+    }
+
+
+    function getTrustedContext(node, attrNormalizedName) {
+      if (attrNormalizedName == "srcdoc") {
+        return $sce.HTML;
+      }
+      var tag = nodeName_(node);
+      // maction[xlink:href] can source SVG.  It's not limited to <maction>.
+      if (attrNormalizedName == "xlinkHref" ||
+          (tag == "form" && attrNormalizedName == "action") ||
+          (tag != "img" && (attrNormalizedName == "src" ||
+                            attrNormalizedName == "ngSrc"))) {
+        return $sce.RESOURCE_URL;
+      }
+    }
+
+
+    function addAttrInterpolateDirective(node, directives, value, name, allOrNothing) {
+      var trustedContext = getTrustedContext(node, name);
+      allOrNothing = ALL_OR_NOTHING_ATTRS[name] || allOrNothing;
+
+      var interpolateFn = $interpolate(value, true, trustedContext, allOrNothing);
+
+      // no interpolation found -> ignore
+      if (!interpolateFn) return;
+
+
+      if (name === "multiple" && nodeName_(node) === "select") {
+        throw $compileMinErr("selmulti",
+            "Binding to the 'multiple' attribute is not supported. Element: {0}",
+            startingTag(node));
+      }
+
+      directives.push({
+        priority: 100,
+        compile: function() {
+            return {
+              pre: function attrInterpolatePreLinkFn(scope, element, attr) {
+                var $$observers = (attr.$$observers || (attr.$$observers = {}));
+
+                if (EVENT_HANDLER_ATTR_REGEXP.test(name)) {
+                  throw $compileMinErr('nodomevents',
+                      "Interpolations for HTML DOM event attributes are disallowed.  Please use the " +
+                          "ng- versions (such as ng-click instead of onclick) instead.");
+                }
+
+                // If the attribute has changed since last $interpolate()ed
+                var newValue = attr[name];
+                if (newValue !== value) {
+                  // we need to interpolate again since the attribute value has been updated
+                  // (e.g. by another directive's compile function)
+                  // ensure unset/empty values make interpolateFn falsy
+                  interpolateFn = newValue && $interpolate(newValue, true, trustedContext, allOrNothing);
+                  value = newValue;
+                }
+
+                // if attribute was updated so that there is no interpolation going on we don't want to
+                // register any observers
+                if (!interpolateFn) return;
+
+                // initialize attr object so that it's ready in case we need the value for isolate
+                // scope initialization, otherwise the value would not be available from isolate
+                // directive's linking fn during linking phase
+                attr[name] = interpolateFn(scope);
+
+                ($$observers[name] || ($$observers[name] = [])).$$inter = true;
+                (attr.$$observers && attr.$$observers[name].$$scope || scope).
+                  $watch(interpolateFn, function interpolateFnWatchAction(newValue, oldValue) {
+                    //special case for class attribute addition + removal
+                    //so that class changes can tap into the animation
+                    //hooks provided by the $animate service. Be sure to
+                    //skip animations when the first digest occurs (when
+                    //both the new and the old values are the same) since
+                    //the CSS classes are the non-interpolated values
+                    if (name === 'class' && newValue != oldValue) {
+                      attr.$updateClass(newValue, oldValue);
+                    } else {
+                      attr.$set(name, newValue);
+                    }
+                  });
+              }
+            };
+          }
+      });
+    }
+
+
+    /**
+     * This is a special jqLite.replaceWith, which can replace items which
+     * have no parents, provided that the containing jqLite collection is provided.
+     *
+     * @param {JqLite=} $rootElement The root of the compile tree. Used so that we can replace nodes
+     *                               in the root of the tree.
+     * @param {JqLite} elementsToRemove The jqLite element which we are going to replace. We keep
+     *                                  the shell, but replace its DOM node reference.
+     * @param {Node} newNode The new DOM node.
+     */
+    function replaceWith($rootElement, elementsToRemove, newNode) {
+      var firstElementToRemove = elementsToRemove[0],
+          removeCount = elementsToRemove.length,
+          parent = firstElementToRemove.parentNode,
+          i, ii;
+
+      if ($rootElement) {
+        for (i = 0, ii = $rootElement.length; i < ii; i++) {
+          if ($rootElement[i] == firstElementToRemove) {
+            $rootElement[i++] = newNode;
+            for (var j = i, j2 = j + removeCount - 1,
+                     jj = $rootElement.length;
+                 j < jj; j++, j2++) {
+              if (j2 < jj) {
+                $rootElement[j] = $rootElement[j2];
+              } else {
+                delete $rootElement[j];
+              }
+            }
+            $rootElement.length -= removeCount - 1;
+
+            // If the replaced element is also the jQuery .context then replace it
+            // .context is a deprecated jQuery api, so we should set it only when jQuery set it
+            // http://api.jquery.com/context/
+            if ($rootElement.context === firstElementToRemove) {
+              $rootElement.context = newNode;
+            }
+            break;
+          }
+        }
+      }
+
+      if (parent) {
+        parent.replaceChild(newNode, firstElementToRemove);
+      }
+
+      // TODO(perf): what's this document fragment for? is it needed? can we at least reuse it?
+      var fragment = document.createDocumentFragment();
+      fragment.appendChild(firstElementToRemove);
+
+      // Copy over user data (that includes Angular's $scope etc.). Don't copy private
+      // data here because there's no public interface in jQuery to do that and copying over
+      // event listeners (which is the main use of private data) wouldn't work anyway.
+      jqLite(newNode).data(jqLite(firstElementToRemove).data());
+
+      // Remove data of the replaced element. We cannot just call .remove()
+      // on the element it since that would deallocate scope that is needed
+      // for the new node. Instead, remove the data "manually".
+      if (!jQuery) {
+        delete jqLite.cache[firstElementToRemove[jqLite.expando]];
+      } else {
+        // jQuery 2.x doesn't expose the data storage. Use jQuery.cleanData to clean up after
+        // the replaced element. The cleanData version monkey-patched by Angular would cause
+        // the scope to be trashed and we do need the very same scope to work with the new
+        // element. However, we cannot just cache the non-patched version and use it here as
+        // that would break if another library patches the method after Angular does (one
+        // example is jQuery UI). Instead, set a flag indicating scope destroying should be
+        // skipped this one time.
+        skipDestroyOnNextJQueryCleanData = true;
+        jQuery.cleanData([firstElementToRemove]);
+      }
+
+      for (var k = 1, kk = elementsToRemove.length; k < kk; k++) {
+        var element = elementsToRemove[k];
+        jqLite(element).remove(); // must do this way to clean up expando
+        fragment.appendChild(element);
+        delete elementsToRemove[k];
+      }
+
+      elementsToRemove[0] = newNode;
+      elementsToRemove.length = 1;
+    }
+
+
+    function cloneAndAnnotateFn(fn, annotation) {
+      return extend(function() { return fn.apply(null, arguments); }, fn, annotation);
+    }
+
+
+    function invokeLinkFn(linkFn, scope, $element, attrs, controllers, transcludeFn) {
+      try {
+        linkFn(scope, $element, attrs, controllers, transcludeFn);
+      } catch (e) {
+        $exceptionHandler(e, startingTag($element));
+      }
+    }
+  }];
+}
+
+var PREFIX_REGEXP = /^((?:x|data)[\:\-_])/i;
+/**
+ * Converts all accepted directives format into proper directive name.
+ * @param name Name to normalize
+ */
+function directiveNormalize(name) {
+  return camelCase(name.replace(PREFIX_REGEXP, ''));
+}
+
+/**
+ * @ngdoc type
+ * @name $compile.directive.Attributes
+ *
+ * @description
+ * A shared object between directive compile / linking functions which contains normalized DOM
+ * element attributes. The values reflect current binding state `{{ }}`. The normalization is
+ * needed since all of these are treated as equivalent in Angular:
+ *
+ * ```
+ *    <span ng:bind="a" ng-bind="a" data-ng-bind="a" x-ng-bind="a">
+ * ```
+ */
+
+/**
+ * @ngdoc property
+ * @name $compile.directive.Attributes#$attr
+ *
+ * @description
+ * A map of DOM element attribute names to the normalized name. This is
+ * needed to do reverse lookup from normalized name back to actual name.
+ */
+
+
+/**
+ * @ngdoc method
+ * @name $compile.directive.Attributes#$set
+ * @kind function
+ *
+ * @description
+ * Set DOM element attribute value.
+ *
+ *
+ * @param {string} name Normalized element attribute name of the property to modify. The name is
+ *          reverse-translated using the {@link ng.$compile.directive.Attributes#$attr $attr}
+ *          property to the original name.
+ * @param {string} value Value to set the attribute to. The value can be an interpolated string.
+ */
+
+
+
+/**
+ * Closure compiler type information
+ */
+
+function nodesetLinkingFn(
+  /* angular.Scope */ scope,
+  /* NodeList */ nodeList,
+  /* Element */ rootElement,
+  /* function(Function) */ boundTranscludeFn
+) {}
+
+function directiveLinkingFn(
+  /* nodesetLinkingFn */ nodesetLinkingFn,
+  /* angular.Scope */ scope,
+  /* Node */ node,
+  /* Element */ rootElement,
+  /* function(Function) */ boundTranscludeFn
+) {}
+
+function tokenDifference(str1, str2) {
+  var values = '',
+      tokens1 = str1.split(/\s+/),
+      tokens2 = str2.split(/\s+/);
+
+  outer:
+  for (var i = 0; i < tokens1.length; i++) {
+    var token = tokens1[i];
+    for (var j = 0; j < tokens2.length; j++) {
+      if (token == tokens2[j]) continue outer;
+    }
+    values += (values.length > 0 ? ' ' : '') + token;
+  }
+  return values;
+}
+
+function removeComments(jqNodes) {
+  jqNodes = jqLite(jqNodes);
+  var i = jqNodes.length;
+
+  if (i <= 1) {
+    return jqNodes;
+  }
+
+  while (i--) {
+    var node = jqNodes[i];
+    if (node.nodeType === NODE_TYPE_COMMENT) {
+      splice.call(jqNodes, i, 1);
+    }
+  }
+  return jqNodes;
+}
+
+var $controllerMinErr = minErr('$controller');
+
+/**
+ * @ngdoc provider
+ * @name $controllerProvider
+ * @description
+ * The {@link ng.$controller $controller service} is used by Angular to create new
+ * controllers.
+ *
+ * This provider allows controller registration via the
+ * {@link ng.$controllerProvider#register register} method.
+ */
+function $ControllerProvider() {
+  var controllers = {},
+      globals = false,
+      CNTRL_REG = /^(\S+)(\s+as\s+(\w+))?$/;
+
+
+  /**
+   * @ngdoc method
+   * @name $controllerProvider#register
+   * @param {string|Object} name Controller name, or an object map of controllers where the keys are
+   *    the names and the values are the constructors.
+   * @param {Function|Array} constructor Controller constructor fn (optionally decorated with DI
+   *    annotations in the array notation).
+   */
+  this.register = function(name, constructor) {
+    assertNotHasOwnProperty(name, 'controller');
+    if (isObject(name)) {
+      extend(controllers, name);
+    } else {
+      controllers[name] = constructor;
+    }
+  };
+
+  /**
+   * @ngdoc method
+   * @name $controllerProvider#allowGlobals
+   * @description If called, allows `$controller` to find controller constructors on `window`
+   */
+  this.allowGlobals = function() {
+    globals = true;
+  };
+
+
+  this.$get = ['$injector', '$window', function($injector, $window) {
+
+    /**
+     * @ngdoc service
+     * @name $controller
+     * @requires $injector
+     *
+     * @param {Function|string} constructor If called with a function then it's considered to be the
+     *    controller constructor function. Otherwise it's considered to be a string which is used
+     *    to retrieve the controller constructor using the following steps:
+     *
+     *    * check if a controller with given name is registered via `$controllerProvider`
+     *    * check if evaluating the string on the current scope returns a constructor
+     *    * if $controllerProvider#allowGlobals, check `window[constructor]` on the global
+     *      `window` object (not recommended)
+     *
+     *    The string can use the `controller as property` syntax, where the controller instance is published
+     *    as the specified property on the `scope`; the `scope` must be injected into `locals` param for this
+     *    to work correctly.
+     *
+     * @param {Object} locals Injection locals for Controller.
+     * @return {Object} Instance of given controller.
+     *
+     * @description
+     * `$controller` service is responsible for instantiating controllers.
+     *
+     * It's just a simple call to {@link auto.$injector $injector}, but extracted into
+     * a service, so that one can override this service with [BC version](https://gist.github.com/1649788).
+     */
+    return function(expression, locals, later, ident) {
+      // PRIVATE API:
+      //   param `later` --- indicates that the controller's constructor is invoked at a later time.
+      //                     If true, $controller will allocate the object with the correct
+      //                     prototype chain, but will not invoke the controller until a returned
+      //                     callback is invoked.
+      //   param `ident` --- An optional label which overrides the label parsed from the controller
+      //                     expression, if any.
+      var instance, match, constructor, identifier;
+      later = later === true;
+      if (ident && isString(ident)) {
+        identifier = ident;
+      }
+
+      if (isString(expression)) {
+        match = expression.match(CNTRL_REG);
+        if (!match) {
+          throw $controllerMinErr('ctrlfmt',
+            "Badly formed controller string '{0}'. " +
+            "Must match `__name__ as __id__` or `__name__`.", expression);
+        }
+        constructor = match[1],
+        identifier = identifier || match[3];
+        expression = controllers.hasOwnProperty(constructor)
+            ? controllers[constructor]
+            : getter(locals.$scope, constructor, true) ||
+                (globals ? getter($window, constructor, true) : undefined);
+
+        assertArgFn(expression, constructor, true);
+      }
+
+      if (later) {
+        // Instantiate controller later:
+        // This machinery is used to create an instance of the object before calling the
+        // controller's constructor itself.
+        //
+        // This allows properties to be added to the controller before the constructor is
+        // invoked. Primarily, this is used for isolate scope bindings in $compile.
+        //
+        // This feature is not intended for use by applications, and is thus not documented
+        // publicly.
+        // Object creation: http://jsperf.com/create-constructor/2
+        var controllerPrototype = (isArray(expression) ?
+          expression[expression.length - 1] : expression).prototype;
+        instance = Object.create(controllerPrototype || null);
+
+        if (identifier) {
+          addIdentifier(locals, identifier, instance, constructor || expression.name);
+        }
+
+        return extend(function() {
+          $injector.invoke(expression, instance, locals, constructor);
+          return instance;
+        }, {
+          instance: instance,
+          identifier: identifier
+        });
+      }
+
+      instance = $injector.instantiate(expression, locals, constructor);
+
+      if (identifier) {
+        addIdentifier(locals, identifier, instance, constructor || expression.name);
+      }
+
+      return instance;
+    };
+
+    function addIdentifier(locals, identifier, instance, name) {
+      if (!(locals && isObject(locals.$scope))) {
+        throw minErr('$controller')('noscp',
+          "Cannot export controller '{0}' as '{1}'! No $scope object provided via `locals`.",
+          name, identifier);
+      }
+
+      locals.$scope[identifier] = instance;
+    }
+  }];
+}
+
+/**
+ * @ngdoc service
+ * @name $document
+ * @requires $window
+ *
+ * @description
+ * A {@link angular.element jQuery or jqLite} wrapper for the browser's `window.document` object.
+ *
+ * @example
+   <example module="documentExample">
+     <file name="index.html">
+       <div ng-controller="ExampleController">
+         <p>$document title: <b ng-bind="title"></b></p>
+         <p>window.document title: <b ng-bind="windowTitle"></b></p>
+       </div>
+     </file>
+     <file name="script.js">
+       angular.module('documentExample', [])
+         .controller('ExampleController', ['$scope', '$document', function($scope, $document) {
+           $scope.title = $document[0].title;
+           $scope.windowTitle = angular.element(window.document)[0].title;
+         }]);
+     </file>
+   </example>
+ */
+function $DocumentProvider() {
+  this.$get = ['$window', function(window) {
+    return jqLite(window.document);
+  }];
+}
+
+/**
+ * @ngdoc service
+ * @name $exceptionHandler
+ * @requires ng.$log
+ *
+ * @description
+ * Any uncaught exception in angular expressions is delegated to this service.
+ * The default implementation simply delegates to `$log.error` which logs it into
+ * the browser console.
+ *
+ * In unit tests, if `angular-mocks.js` is loaded, this service is overridden by
+ * {@link ngMock.$exceptionHandler mock $exceptionHandler} which aids in testing.
+ *
+ * ## Example:
+ *
+ * ```js
+ *   angular.module('exceptionOverride', []).factory('$exceptionHandler', function() {
+ *     return function(exception, cause) {
+ *       exception.message += ' (caused by "' + cause + '")';
+ *       throw exception;
+ *     };
+ *   });
+ * ```
+ *
+ * This example will override the normal action of `$exceptionHandler`, to make angular
+ * exceptions fail hard when they happen, instead of just logging to the console.
+ *
+ * <hr />
+ * Note, that code executed in event-listeners (even those registered using jqLite's `on`/`bind`
+ * methods) does not delegate exceptions to the {@link ng.$exceptionHandler $exceptionHandler}
+ * (unless executed during a digest).
+ *
+ * If you wish, you can manually delegate exceptions, e.g.
+ * `try { ... } catch(e) { $exceptionHandler(e); }`
+ *
+ * @param {Error} exception Exception associated with the error.
+ * @param {string=} cause optional information about the context in which
+ *       the error was thrown.
+ *
+ */
+function $ExceptionHandlerProvider() {
+  this.$get = ['$log', function($log) {
+    return function(exception, cause) {
+      $log.error.apply($log, arguments);
+    };
+  }];
+}
+
+var APPLICATION_JSON = 'application/json';
+var CONTENT_TYPE_APPLICATION_JSON = {'Content-Type': APPLICATION_JSON + ';charset=utf-8'};
+var JSON_START = /^\[|^\{(?!\{)/;
+var JSON_ENDS = {
+  '[': /]$/,
+  '{': /}$/
+};
+var JSON_PROTECTION_PREFIX = /^\)\]\}',?\n/;
+
+function defaultHttpResponseTransform(data, headers) {
+  if (isString(data)) {
+    // Strip json vulnerability protection prefix and trim whitespace
+    var tempData = data.replace(JSON_PROTECTION_PREFIX, '').trim();
+
+    if (tempData) {
+      var contentType = headers('Content-Type');
+      if ((contentType && (contentType.indexOf(APPLICATION_JSON) === 0)) || isJsonLike(tempData)) {
+        data = fromJson(tempData);
+      }
+    }
+  }
+
+  return data;
+}
+
+function isJsonLike(str) {
+    var jsonStart = str.match(JSON_START);
+    return jsonStart && JSON_ENDS[jsonStart[0]].test(str);
+}
+
+/**
+ * Parse headers into key value object
+ *
+ * @param {string} headers Raw headers as a string
+ * @returns {Object} Parsed headers as key value object
+ */
+function parseHeaders(headers) {
+  var parsed = createMap(), key, val, i;
+
+  if (!headers) return parsed;
+
+  forEach(headers.split('\n'), function(line) {
+    i = line.indexOf(':');
+    key = lowercase(trim(line.substr(0, i)));
+    val = trim(line.substr(i + 1));
+
+    if (key) {
+      parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;
+    }
+  });
+
+  return parsed;
+}
+
+
+/**
+ * Returns a function that provides access to parsed headers.
+ *
+ * Headers are lazy parsed when first requested.
+ * @see parseHeaders
+ *
+ * @param {(string|Object)} headers Headers to provide access to.
+ * @returns {function(string=)} Returns a getter function which if called with:
+ *
+ *   - if called with single an argument returns a single header value or null
+ *   - if called with no arguments returns an object containing all headers.
+ */
+function headersGetter(headers) {
+  var headersObj = isObject(headers) ? headers : undefined;
+
+  return function(name) {
+    if (!headersObj) headersObj =  parseHeaders(headers);
+
+    if (name) {
+      var value = headersObj[lowercase(name)];
+      if (value === void 0) {
+        value = null;
+      }
+      return value;
+    }
+
+    return headersObj;
+  };
+}
+
+
+/**
+ * Chain all given functions
+ *
+ * This function is used for both request and response transforming
+ *
+ * @param {*} data Data to transform.
+ * @param {function(string=)} headers HTTP headers getter fn.
+ * @param {number} status HTTP status code of the response.
+ * @param {(Function|Array.<Function>)} fns Function or an array of functions.
+ * @returns {*} Transformed data.
+ */
+function transformData(data, headers, status, fns) {
+  if (isFunction(fns))
+    return fns(data, headers, status);
+
+  forEach(fns, function(fn) {
+    data = fn(data, headers, status);
+  });
+
+  return data;
+}
+
+
+function isSuccess(status) {
+  return 200 <= status && status < 300;
+}
+
+
+/**
+ * @ngdoc provider
+ * @name $httpProvider
+ * @description
+ * Use `$httpProvider` to change the default behavior of the {@link ng.$http $http} service.
+ * */
+function $HttpProvider() {
+  /**
+   * @ngdoc property
+   * @name $httpProvider#defaults
+   * @description
+   *
+   * Object containing default values for all {@link ng.$http $http} requests.
+   *
+   * - **`defaults.cache`** - {Object} - an object built with {@link ng.$cacheFactory `$cacheFactory`}
+   * that will provide the cache for all requests who set their `cache` property to `true`.
+   * If you set the `default.cache = false` then only requests that specify their own custom
+   * cache object will be cached. See {@link $http#caching $http Caching} for more information.
+   *
+   * - **`defaults.xsrfCookieName`** - {string} - Name of cookie containing the XSRF token.
+   * Defaults value is `'XSRF-TOKEN'`.
+   *
+   * - **`defaults.xsrfHeaderName`** - {string} - Name of HTTP header to populate with the
+   * XSRF token. Defaults value is `'X-XSRF-TOKEN'`.
+   *
+   * - **`defaults.headers`** - {Object} - Default headers for all $http requests.
+   * Refer to {@link ng.$http#setting-http-headers $http} for documentation on
+   * setting default headers.
+   *     - **`defaults.headers.common`**
+   *     - **`defaults.headers.post`**
+   *     - **`defaults.headers.put`**
+   *     - **`defaults.headers.patch`**
+   *
+   **/
+  var defaults = this.defaults = {
+    // transform incoming response data
+    transformResponse: [defaultHttpResponseTransform],
+
+    // transform outgoing request data
+    transformRequest: [function(d) {
+      return isObject(d) && !isFile(d) && !isBlob(d) && !isFormData(d) ? toJson(d) : d;
+    }],
+
+    // default headers
+    headers: {
+      common: {
+        'Accept': 'application/json, text/plain, */*'
+      },
+      post:   shallowCopy(CONTENT_TYPE_APPLICATION_JSON),
+      put:    shallowCopy(CONTENT_TYPE_APPLICATION_JSON),
+      patch:  shallowCopy(CONTENT_TYPE_APPLICATION_JSON)
+    },
+
+    xsrfCookieName: 'XSRF-TOKEN',
+    xsrfHeaderName: 'X-XSRF-TOKEN'
+  };
+
+  var useApplyAsync = false;
+  /**
+   * @ngdoc method
+   * @name $httpProvider#useApplyAsync
+   * @description
+   *
+   * Configure $http service to combine processing of multiple http responses received at around
+   * the same time via {@link ng.$rootScope.Scope#$applyAsync $rootScope.$applyAsync}. This can result in
+   * significant performance improvement for bigger applications that make many HTTP requests
+   * concurrently (common during application bootstrap).
+   *
+   * Defaults to false. If no value is specifed, returns the current configured value.
+   *
+   * @param {boolean=} value If true, when requests are loaded, they will schedule a deferred
+   *    "apply" on the next tick, giving time for subsequent requests in a roughly ~10ms window
+   *    to load and share the same digest cycle.
+   *
+   * @returns {boolean|Object} If a value is specified, returns the $httpProvider for chaining.
+   *    otherwise, returns the current configured value.
+   **/
+  this.useApplyAsync = function(value) {
+    if (isDefined(value)) {
+      useApplyAsync = !!value;
+      return this;
+    }
+    return useApplyAsync;
+  };
+
+  /**
+   * @ngdoc property
+   * @name $httpProvider#interceptors
+   * @description
+   *
+   * Array containing service factories for all synchronous or asynchronous {@link ng.$http $http}
+   * pre-processing of request or postprocessing of responses.
+   *
+   * These service factories are ordered by request, i.e. they are applied in the same order as the
+   * array, on request, but reverse order, on response.
+   *
+   * {@link ng.$http#interceptors Interceptors detailed info}
+   **/
+  var interceptorFactories = this.interceptors = [];
+
+  this.$get = ['$httpBackend', '$browser', '$cacheFactory', '$rootScope', '$q', '$injector',
+      function($httpBackend, $browser, $cacheFactory, $rootScope, $q, $injector) {
+
+    var defaultCache = $cacheFactory('$http');
+
+    /**
+     * Interceptors stored in reverse order. Inner interceptors before outer interceptors.
+     * The reversal is needed so that we can build up the interception chain around the
+     * server request.
+     */
+    var reversedInterceptors = [];
+
+    forEach(interceptorFactories, function(interceptorFactory) {
+      reversedInterceptors.unshift(isString(interceptorFactory)
+          ? $injector.get(interceptorFactory) : $injector.invoke(interceptorFactory));
+    });
+
+    /**
+     * @ngdoc service
+     * @kind function
+     * @name $http
+     * @requires ng.$httpBackend
+     * @requires $cacheFactory
+     * @requires $rootScope
+     * @requires $q
+     * @requires $injector
+     *
+     * @description
+     * The `$http` service is a core Angular service that facilitates communication with the remote
+     * HTTP servers via the browser's [XMLHttpRequest](https://developer.mozilla.org/en/xmlhttprequest)
+     * object or via [JSONP](http://en.wikipedia.org/wiki/JSONP).
+     *
+     * For unit testing applications that use `$http` service, see
+     * {@link ngMock.$httpBackend $httpBackend mock}.
+     *
+     * For a higher level of abstraction, please check out the {@link ngResource.$resource
+     * $resource} service.
+     *
+     * The $http API is based on the {@link ng.$q deferred/promise APIs} exposed by
+     * the $q service. While for simple usage patterns this doesn't matter much, for advanced usage
+     * it is important to familiarize yourself with these APIs and the guarantees they provide.
+     *
+     *
+     * ## General usage
+     * The `$http` service is a function which takes a single argument — a configuration object —
+     * that is used to generate an HTTP request and returns  a {@link ng.$q promise}
+     * with two $http specific methods: `success` and `error`.
+     *
+     * ```js
+     *   // Simple GET request example :
+     *   $http.get('/someUrl').
+     *     success(function(data, status, headers, config) {
+     *       // this callback will be called asynchronously
+     *       // when the response is available
+     *     }).
+     *     error(function(data, status, headers, config) {
+     *       // called asynchronously if an error occurs
+     *       // or server returns response with an error status.
+     *     });
+     * ```
+     *
+     * ```js
+     *   // Simple POST request example (passing data) :
+     *   $http.post('/someUrl', {msg:'hello word!'}).
+     *     success(function(data, status, headers, config) {
+     *       // this callback will be called asynchronously
+     *       // when the response is available
+     *     }).
+     *     error(function(data, status, headers, config) {
+     *       // called asynchronously if an error occurs
+     *       // or server returns response with an error status.
+     *     });
+     * ```
+     *
+     *
+     * Since the returned value of calling the $http function is a `promise`, you can also use
+     * the `then` method to register callbacks, and these callbacks will receive a single argument –
+     * an object representing the response. See the API signature and type info below for more
+     * details.
+     *
+     * A response status code between 200 and 299 is considered a success status and
+     * will result in the success callback being called. Note that if the response is a redirect,
+     * XMLHttpRequest will transparently follow it, meaning that the error callback will not be
+     * called for such responses.
+     *
+     * ## Writing Unit Tests that use $http
+     * When unit testing (using {@link ngMock ngMock}), it is necessary to call
+     * {@link ngMock.$httpBackend#flush $httpBackend.flush()} to flush each pending
+     * request using trained responses.
+     *
+     * ```
+     * $httpBackend.expectGET(...);
+     * $http.get(...);
+     * $httpBackend.flush();
+     * ```
+     *
+     * ## Shortcut methods
+     *
+     * Shortcut methods are also available. All shortcut methods require passing in the URL, and
+     * request data must be passed in for POST/PUT requests.
+     *
+     * ```js
+     *   $http.get('/someUrl').success(successCallback);
+     *   $http.post('/someUrl', data).success(successCallback);
+     * ```
+     *
+     * Complete list of shortcut methods:
+     *
+     * - {@link ng.$http#get $http.get}
+     * - {@link ng.$http#head $http.head}
+     * - {@link ng.$http#post $http.post}
+     * - {@link ng.$http#put $http.put}
+     * - {@link ng.$http#delete $http.delete}
+     * - {@link ng.$http#jsonp $http.jsonp}
+     * - {@link ng.$http#patch $http.patch}
+     *
+     *
+     * ## Setting HTTP Headers
+     *
+     * The $http service will automatically add certain HTTP headers to all requests. These defaults
+     * can be fully configured by accessing the `$httpProvider.defaults.headers` configuration
+     * object, which currently contains this default configuration:
+     *
+     * - `$httpProvider.defaults.headers.common` (headers that are common for all requests):
+     *   - `Accept: application/json, text/plain, * / *`
+     * - `$httpProvider.defaults.headers.post`: (header defaults for POST requests)
+     *   - `Content-Type: application/json`
+     * - `$httpProvider.defaults.headers.put` (header defaults for PUT requests)
+     *   - `Content-Type: application/json`
+     *
+     * To add or overwrite these defaults, simply add or remove a property from these configuration
+     * objects. To add headers for an HTTP method other than POST or PUT, simply add a new object
+     * with the lowercased HTTP method name as the key, e.g.
+     * `$httpProvider.defaults.headers.get = { 'My-Header' : 'value' }.
+     *
+     * The defaults can also be set at runtime via the `$http.defaults` object in the same
+     * fashion. For example:
+     *
+     * ```
+     * module.run(function($http) {
+     *   $http.defaults.headers.common.Authorization = 'Basic YmVlcDpib29w'
+     * });
+     * ```
+     *
+     * In addition, you can supply a `headers` property in the config object passed when
+     * calling `$http(config)`, which overrides the defaults without changing them globally.
+     *
+     * To explicitly remove a header automatically added via $httpProvider.defaults.headers on a per request basis,
+     * Use the `headers` property, setting the desired header to `undefined`. For example:
+     *
+     * ```js
+     * var req = {
+     *  method: 'POST',
+     *  url: 'http://example.com',
+     *  headers: {
+     *    'Content-Type': undefined
+     *  },
+     *  data: { test: 'test' }
+     * }
+     *
+     * $http(req).success(function(){...}).error(function(){...});
+     * ```
+     *
+     * ## Transforming Requests and Responses
+     *
+     * Both requests and responses can be transformed using transformation functions: `transformRequest`
+     * and `transformResponse`. These properties can be a single function that returns
+     * the transformed value (`function(data, headersGetter, status)`) or an array of such transformation functions,
+     * which allows you to `push` or `unshift` a new transformation function into the transformation chain.
+     *
+     * ### Default Transformations
+     *
+     * The `$httpProvider` provider and `$http` service expose `defaults.transformRequest` and
+     * `defaults.transformResponse` properties. If a request does not provide its own transformations
+     * then these will be applied.
+     *
+     * You can augment or replace the default transformations by modifying these properties by adding to or
+     * replacing the array.
+     *
+     * Angular provides the following default transformations:
+     *
+     * Request transformations (`$httpProvider.defaults.transformRequest` and `$http.defaults.transformRequest`):
+     *
+     * - If the `data` property of the request configuration object contains an object, serialize it
+     *   into JSON format.
+     *
+     * Response transformations (`$httpProvider.defaults.transformResponse` and `$http.defaults.transformResponse`):
+     *
+     *  - If XSRF prefix is detected, strip it (see Security Considerations section below).
+     *  - If JSON response is detected, deserialize it using a JSON parser.
+     *
+     *
+     * ### Overriding the Default Transformations Per Request
+     *
+     * If you wish override the request/response transformations only for a single request then provide
+     * `transformRequest` and/or `transformResponse` properties on the configuration object passed
+     * into `$http`.
+     *
+     * Note that if you provide these properties on the config object the default transformations will be
+     * overwritten. If you wish to augment the default transformations then you must include them in your
+     * local transformation array.
+     *
+     * The following code demonstrates adding a new response transformation to be run after the default response
+     * transformations have been run.
+     *
+     * ```js
+     * function appendTransform(defaults, transform) {
+     *
+     *   // We can't guarantee that the default transformation is an array
+     *   defaults = angular.isArray(defaults) ? defaults : [defaults];
+     *
+     *   // Append the new transformation to the defaults
+     *   return defaults.concat(transform);
+     * }
+     *
+     * $http({
+     *   url: '...',
+     *   method: 'GET',
+     *   transformResponse: appendTransform($http.defaults.transformResponse, function(value) {
+     *     return doTransform(value);
+     *   })
+     * });
+     * ```
+     *
+     *
+     * ## Caching
+     *
+     * To enable caching, set the request configuration `cache` property to `true` (to use default
+     * cache) or to a custom cache object (built with {@link ng.$cacheFactory `$cacheFactory`}).
+     * When the cache is enabled, `$http` stores the response from the server in the specified
+     * cache. The next time the same request is made, the response is served from the cache without
+     * sending a request to the server.
+     *
+     * Note that even if the response is served from cache, delivery of the data is asynchronous in
+     * the same way that real requests are.
+     *
+     * If there are multiple GET requests for the same URL that should be cached using the same
+     * cache, but the cache is not populated yet, only one request to the server will be made and
+     * the remaining requests will be fulfilled using the response from the first request.
+     *
+     * You can change the default cache to a new object (built with
+     * {@link ng.$cacheFactory `$cacheFactory`}) by updating the
+     * {@link ng.$http#defaults `$http.defaults.cache`} property. All requests who set
+     * their `cache` property to `true` will now use this cache object.
+     *
+     * If you set the default cache to `false` then only requests that specify their own custom
+     * cache object will be cached.
+     *
+     * ## Interceptors
+     *
+     * Before you start creating interceptors, be sure to understand the
+     * {@link ng.$q $q and deferred/promise APIs}.
+     *
+     * For purposes of global error handling, authentication, or any kind of synchronous or
+     * asynchronous pre-processing of request or postprocessing of responses, it is desirable to be
+     * able to intercept requests before they are handed to the server and
+     * responses before they are handed over to the application code that
+     * initiated these requests. The interceptors leverage the {@link ng.$q
+     * promise APIs} to fulfill this need for both synchronous and asynchronous pre-processing.
+     *
+     * The interceptors are service factories that are registered with the `$httpProvider` by
+     * adding them to the `$httpProvider.interceptors` array. The factory is called and
+     * injected with dependencies (if specified) and returns the interceptor.
+     *
+     * There are two kinds of interceptors (and two kinds of rejection interceptors):
+     *
+     *   * `request`: interceptors get called with a http `config` object. The function is free to
+     *     modify the `config` object or create a new one. The function needs to return the `config`
+     *     object directly, or a promise containing the `config` or a new `config` object.
+     *   * `requestError`: interceptor gets called when a previous interceptor threw an error or
+     *     resolved with a rejection.
+     *   * `response`: interceptors get called with http `response` object. The function is free to
+     *     modify the `response` object or create a new one. The function needs to return the `response`
+     *     object directly, or as a promise containing the `response` or a new `response` object.
+     *   * `responseError`: interceptor gets called when a previous interceptor threw an error or
+     *     resolved with a rejection.
+     *
+     *
+     * ```js
+     *   // register the interceptor as a service
+     *   $provide.factory('myHttpInterceptor', function($q, dependency1, dependency2) {
+     *     return {
+     *       // optional method
+     *       'request': function(config) {
+     *         // do something on success
+     *         return config;
+     *       },
+     *
+     *       // optional method
+     *      'requestError': function(rejection) {
+     *         // do something on error
+     *         if (canRecover(rejection)) {
+     *           return responseOrNewPromise
+     *         }
+     *         return $q.reject(rejection);
+     *       },
+     *
+     *
+     *
+     *       // optional method
+     *       'response': function(response) {
+     *         // do something on success
+     *         return response;
+     *       },
+     *
+     *       // optional method
+     *      'responseError': function(rejection) {
+     *         // do something on error
+     *         if (canRecover(rejection)) {
+     *           return responseOrNewPromise
+     *         }
+     *         return $q.reject(rejection);
+     *       }
+     *     };
+     *   });
+     *
+     *   $httpProvider.interceptors.push('myHttpInterceptor');
+     *
+     *
+     *   // alternatively, register the interceptor via an anonymous factory
+     *   $httpProvider.interceptors.push(function($q, dependency1, dependency2) {
+     *     return {
+     *      'request': function(config) {
+     *          // same as above
+     *       },
+     *
+     *       'response': function(response) {
+     *          // same as above
+     *       }
+     *     };
+     *   });
+     * ```
+     *
+     * ## Security Considerations
+     *
+     * When designing web applications, consider security threats from:
+     *
+     * - [JSON vulnerability](http://haacked.com/archive/2008/11/20/anatomy-of-a-subtle-json-vulnerability.aspx)
+     * - [XSRF](http://en.wikipedia.org/wiki/Cross-site_request_forgery)
+     *
+     * Both server and the client must cooperate in order to eliminate these threats. Angular comes
+     * pre-configured with strategies that address these issues, but for this to work backend server
+     * cooperation is required.
+     *
+     * ### JSON Vulnerability Protection
+     *
+     * A [JSON vulnerability](http://haacked.com/archive/2008/11/20/anatomy-of-a-subtle-json-vulnerability.aspx)
+     * allows third party website to turn your JSON resource URL into
+     * [JSONP](http://en.wikipedia.org/wiki/JSONP) request under some conditions. To
+     * counter this your server can prefix all JSON requests with following string `")]}',\n"`.
+     * Angular will automatically strip the prefix before processing it as JSON.
+     *
+     * For example if your server needs to return:
+     * ```js
+     * ['one','two']
+     * ```
+     *
+     * which is vulnerable to attack, your server can return:
+     * ```js
+     * )]}',
+     * ['one','two']
+     * ```
+     *
+     * Angular will strip the prefix, before processing the JSON.
+     *
+     *
+     * ### Cross Site Request Forgery (XSRF) Protection
+     *
+     * [XSRF](http://en.wikipedia.org/wiki/Cross-site_request_forgery) is a technique by which
+     * an unauthorized site can gain your user's private data. Angular provides a mechanism
+     * to counter XSRF. When performing XHR requests, the $http service reads a token from a cookie
+     * (by default, `XSRF-TOKEN`) and sets it as an HTTP header (`X-XSRF-TOKEN`). Since only
+     * JavaScript that runs on your domain could read the cookie, your server can be assured that
+     * the XHR came from JavaScript running on your domain. The header will not be set for
+     * cross-domain requests.
+     *
+     * To take advantage of this, your server needs to set a token in a JavaScript readable session
+     * cookie called `XSRF-TOKEN` on the first HTTP GET request. On subsequent XHR requests the
+     * server can verify that the cookie matches `X-XSRF-TOKEN` HTTP header, and therefore be sure
+     * that only JavaScript running on your domain could have sent the request. The token must be
+     * unique for each user and must be verifiable by the server (to prevent the JavaScript from
+     * making up its own tokens). We recommend that the token is a digest of your site's
+     * authentication cookie with a [salt](https://en.wikipedia.org/wiki/Salt_(cryptography&#41;)
+     * for added security.
+     *
+     * The name of the headers can be specified using the xsrfHeaderName and xsrfCookieName
+     * properties of either $httpProvider.defaults at config-time, $http.defaults at run-time,
+     * or the per-request config object.
+     *
+     *
+     * @param {object} config Object describing the request to be made and how it should be
+     *    processed. The object has following properties:
+     *
+     *    - **method** – `{string}` – HTTP method (e.g. 'GET', 'POST', etc)
+     *    - **url** – `{string}` – Absolute or relative URL of the resource that is being requested.
+     *    - **params** – `{Object.<string|Object>}` – Map of strings or objects which will be turned
+     *      to `?key1=value1&key2=value2` after the url. If the value is not a string, it will be
+     *      JSONified.
+     *    - **data** – `{string|Object}` – Data to be sent as the request message data.
+     *    - **headers** – `{Object}` – Map of strings or functions which return strings representing
+     *      HTTP headers to send to the server. If the return value of a function is null, the
+     *      header will not be sent.
+     *    - **xsrfHeaderName** – `{string}` – Name of HTTP header to populate with the XSRF token.
+     *    - **xsrfCookieName** – `{string}` – Name of cookie containing the XSRF token.
+     *    - **transformRequest** –
+     *      `{function(data, headersGetter)|Array.<function(data, headersGetter)>}` –
+     *      transform function or an array of such functions. The transform function takes the http
+     *      request body and headers and returns its transformed (typically serialized) version.
+     *      See {@link ng.$http#overriding-the-default-transformations-per-request
+     *      Overriding the Default Transformations}
+     *    - **transformResponse** –
+     *      `{function(data, headersGetter, status)|Array.<function(data, headersGetter, status)>}` –
+     *      transform function or an array of such functions. The transform function takes the http
+     *      response body, headers and status and returns its transformed (typically deserialized) version.
+     *      See {@link ng.$http#overriding-the-default-transformations-per-request
+     *      Overriding the Default Transformations}
+     *    - **cache** – `{boolean|Cache}` – If true, a default $http cache will be used to cache the
+     *      GET request, otherwise if a cache instance built with
+     *      {@link ng.$cacheFactory $cacheFactory}, this cache will be used for
+     *      caching.
+     *    - **timeout** – `{number|Promise}` – timeout in milliseconds, or {@link ng.$q promise}
+     *      that should abort the request when resolved.
+     *    - **withCredentials** - `{boolean}` - whether to set the `withCredentials` flag on the
+     *      XHR object. See [requests with credentials](https://developer.mozilla.org/docs/Web/HTTP/Access_control_CORS#Requests_with_credentials)
+     *      for more information.
+     *    - **responseType** - `{string}` - see
+     *      [requestType](https://developer.mozilla.org/en-US/docs/DOM/XMLHttpRequest#responseType).
+     *
+     * @returns {HttpPromise} Returns a {@link ng.$q promise} object with the
+     *   standard `then` method and two http specific methods: `success` and `error`. The `then`
+     *   method takes two arguments a success and an error callback which will be called with a
+     *   response object. The `success` and `error` methods take a single argument - a function that
+     *   will be called when the request succeeds or fails respectively. The arguments passed into
+     *   these functions are destructured representation of the response object passed into the
+     *   `then` method. The response object has these properties:
+     *
+     *   - **data** – `{string|Object}` – The response body transformed with the transform
+     *     functions.
+     *   - **status** – `{number}` – HTTP status code of the response.
+     *   - **headers** – `{function([headerName])}` – Header getter function.
+     *   - **config** – `{Object}` – The configuration object that was used to generate the request.
+     *   - **statusText** – `{string}` – HTTP status text of the response.
+     *
+     * @property {Array.<Object>} pendingRequests Array of config objects for currently pending
+     *   requests. This is primarily meant to be used for debugging purposes.
+     *
+     *
+     * @example
+<example module="httpExample">
+<file name="index.html">
+  <div ng-controller="FetchController">
+    <select ng-model="method">
+      <option>GET</option>
+      <option>JSONP</option>
+    </select>
+    <input type="text" ng-model="url" size="80"/>
+    <button id="fetchbtn" ng-click="fetch()">fetch</button><br>
+    <button id="samplegetbtn" ng-click="updateModel('GET', 'http-hello.html')">Sample GET</button>
+    <button id="samplejsonpbtn"
+      ng-click="updateModel('JSONP',
+                    'https://angularjs.org/greet.php?callback=JSON_CALLBACK&name=Super%20Hero')">
+      Sample JSONP
+    </button>
+    <button id="invalidjsonpbtn"
+      ng-click="updateModel('JSONP', 'https://angularjs.org/doesntexist&callback=JSON_CALLBACK')">
+        Invalid JSONP
+      </button>
+    <pre>http status code: {{status}}</pre>
+    <pre>http response data: {{data}}</pre>
+  </div>
+</file>
+<file name="script.js">
+  angular.module('httpExample', [])
+    .controller('FetchController', ['$scope', '$http', '$templateCache',
+      function($scope, $http, $templateCache) {
+        $scope.method = 'GET';
+        $scope.url = 'http-hello.html';
+
+        $scope.fetch = function() {
+          $scope.code = null;
+          $scope.response = null;
+
+          $http({method: $scope.method, url: $scope.url, cache: $templateCache}).
+            success(function(data, status) {
+              $scope.status = status;
+              $scope.data = data;
+            }).
+            error(function(data, status) {
+              $scope.data = data || "Request failed";
+              $scope.status = status;
+          });
+        };
+
+        $scope.updateModel = function(method, url) {
+          $scope.method = method;
+          $scope.url = url;
+        };
+      }]);
+</file>
+<file name="http-hello.html">
+  Hello, $http!
+</file>
+<file name="protractor.js" type="protractor">
+  var status = element(by.binding('status'));
+  var data = element(by.binding('data'));
+  var fetchBtn = element(by.id('fetchbtn'));
+  var sampleGetBtn = element(by.id('samplegetbtn'));
+  var sampleJsonpBtn = element(by.id('samplejsonpbtn'));
+  var invalidJsonpBtn = element(by.id('invalidjsonpbtn'));
+
+  it('should make an xhr GET request', function() {
+    sampleGetBtn.click();
+    fetchBtn.click();
+    expect(status.getText()).toMatch('200');
+    expect(data.getText()).toMatch(/Hello, \$http!/);
+  });
+
+// Commented out due to flakes. See https://github.com/angular/angular.js/issues/9185
+// it('should make a JSONP request to angularjs.org', function() {
+//   sampleJsonpBtn.click();
+//   fetchBtn.click();
+//   expect(status.getText()).toMatch('200');
+//   expect(data.getText()).toMatch(/Super Hero!/);
+// });
+
+  it('should make JSONP request to invalid URL and invoke the error handler',
+      function() {
+    invalidJsonpBtn.click();
+    fetchBtn.click();
+    expect(status.getText()).toMatch('0');
+    expect(data.getText()).toMatch('Request failed');
+  });
+</file>
+</example>
+     */
+    function $http(requestConfig) {
+
+      if (!angular.isObject(requestConfig)) {
+        throw minErr('$http')('badreq', 'Http request configuration must be an object.  Received: {0}', requestConfig);
+      }
+
+      var config = extend({
+        method: 'get',
+        transformRequest: defaults.transformRequest,
+        transformResponse: defaults.transformResponse
+      }, requestConfig);
+
+      config.headers = mergeHeaders(requestConfig);
+      config.method = uppercase(config.method);
+
+      var serverRequest = function(config) {
+        var headers = config.headers;
+        var reqData = transformData(config.data, headersGetter(headers), undefined, config.transformRequest);
+
+        // strip content-type if data is undefined
+        if (isUndefined(reqData)) {
+          forEach(headers, function(value, header) {
+            if (lowercase(header) === 'content-type') {
+                delete headers[header];
+            }
+          });
+        }
+
+        if (isUndefined(config.withCredentials) && !isUndefined(defaults.withCredentials)) {
+          config.withCredentials = defaults.withCredentials;
+        }
+
+        // send request
+        return sendReq(config, reqData).then(transformResponse, transformResponse);
+      };
+
+      var chain = [serverRequest, undefined];
+      var promise = $q.when(config);
+
+      // apply interceptors
+      forEach(reversedInterceptors, function(interceptor) {
+        if (interceptor.request || interceptor.requestError) {
+          chain.unshift(interceptor.request, interceptor.requestError);
+        }
+        if (interceptor.response || interceptor.responseError) {
+          chain.push(interceptor.response, interceptor.responseError);
+        }
+      });
+
+      while (chain.length) {
+        var thenFn = chain.shift();
+        var rejectFn = chain.shift();
+
+        promise = promise.then(thenFn, rejectFn);
+      }
+
+      promise.success = function(fn) {
+        assertArgFn(fn, 'fn');
+
+        promise.then(function(response) {
+          fn(response.data, response.status, response.headers, config);
+        });
+        return promise;
+      };
+
+      promise.error = function(fn) {
+        assertArgFn(fn, 'fn');
+
+        promise.then(null, function(response) {
+          fn(response.data, response.status, response.headers, config);
+        });
+        return promise;
+      };
+
+      return promise;
+
+      function transformResponse(response) {
+        // make a copy since the response must be cacheable
+        var resp = extend({}, response);
+        if (!response.data) {
+          resp.data = response.data;
+        } else {
+          resp.data = transformData(response.data, response.headers, response.status, config.transformResponse);
+        }
+        return (isSuccess(response.status))
+          ? resp
+          : $q.reject(resp);
+      }
+
+      function executeHeaderFns(headers) {
+        var headerContent, processedHeaders = {};
+
+        forEach(headers, function(headerFn, header) {
+          if (isFunction(headerFn)) {
+            headerContent = headerFn();
+            if (headerContent != null) {
+              processedHeaders[header] = headerContent;
+            }
+          } else {
+            processedHeaders[header] = headerFn;
+          }
+        });
+
+        return processedHeaders;
+      }
+
+      function mergeHeaders(config) {
+        var defHeaders = defaults.headers,
+            reqHeaders = extend({}, config.headers),
+            defHeaderName, lowercaseDefHeaderName, reqHeaderName;
+
+        defHeaders = extend({}, defHeaders.common, defHeaders[lowercase(config.method)]);
+
+        // using for-in instead of forEach to avoid unecessary iteration after header has been found
+        defaultHeadersIteration:
+        for (defHeaderName in defHeaders) {
+          lowercaseDefHeaderName = lowercase(defHeaderName);
+
+          for (reqHeaderName in reqHeaders) {
+            if (lowercase(reqHeaderName) === lowercaseDefHeaderName) {
+              continue defaultHeadersIteration;
+            }
+          }
+
+          reqHeaders[defHeaderName] = defHeaders[defHeaderName];
+        }
+
+        // execute if header value is a function for merged headers
+        return executeHeaderFns(reqHeaders);
+      }
+    }
+
+    $http.pendingRequests = [];
+
+    /**
+     * @ngdoc method
+     * @name $http#get
+     *
+     * @description
+     * Shortcut method to perform `GET` request.
+     *
+     * @param {string} url Relative or absolute URL specifying the destination of the request
+     * @param {Object=} config Optional configuration object
+     * @returns {HttpPromise} Future object
+     */
+
+    /**
+     * @ngdoc method
+     * @name $http#delete
+     *
+     * @description
+     * Shortcut method to perform `DELETE` request.
+     *
+     * @param {string} url Relative or absolute URL specifying the destination of the request
+     * @param {Object=} config Optional configuration object
+     * @returns {HttpPromise} Future object
+     */
+
+    /**
+     * @ngdoc method
+     * @name $http#head
+     *
+     * @description
+     * Shortcut method to perform `HEAD` request.
+     *
+     * @param {string} url Relative or absolute URL specifying the destination of the request
+     * @param {Object=} config Optional configuration object
+     * @returns {HttpPromise} Future object
+     */
+
+    /**
+     * @ngdoc method
+     * @name $http#jsonp
+     *
+     * @description
+     * Shortcut method to perform `JSONP` request.
+     *
+     * @param {string} url Relative or absolute URL specifying the destination of the request.
+     *                     The name of the callback should be the string `JSON_CALLBACK`.
+     * @param {Object=} config Optional configuration object
+     * @returns {HttpPromise} Future object
+     */
+    createShortMethods('get', 'delete', 'head', 'jsonp');
+
+    /**
+     * @ngdoc method
+     * @name $http#post
+     *
+     * @description
+     * Shortcut method to perform `POST` request.
+     *
+     * @param {string} url Relative or absolute URL specifying the destination of the request
+     * @param {*} data Request content
+     * @param {Object=} config Optional configuration object
+     * @returns {HttpPromise} Future object
+     */
+
+    /**
+     * @ngdoc method
+     * @name $http#put
+     *
+     * @description
+     * Shortcut method to perform `PUT` request.
+     *
+     * @param {string} url Relative or absolute URL specifying the destination of the request
+     * @param {*} data Request content
+     * @param {Object=} config Optional configuration object
+     * @returns {HttpPromise} Future object
+     */
+
+     /**
+      * @ngdoc method
+      * @name $http#patch
+      *
+      * @description
+      * Shortcut method to perform `PATCH` request.
+      *
+      * @param {string} url Relative or absolute URL specifying the destination of the request
+      * @param {*} data Request content
+      * @param {Object=} config Optional configuration object
+      * @returns {HttpPromise} Future object
+      */
+    createShortMethodsWithData('post', 'put', 'patch');
+
+        /**
+         * @ngdoc property
+         * @name $http#defaults
+         *
+         * @description
+         * Runtime equivalent of the `$httpProvider.defaults` property. Allows configuration of
+         * default headers, withCredentials as well as request and response transformations.
+         *
+         * See "Setting HTTP Headers" and "Transforming Requests and Responses" sections above.
+         */
+    $http.defaults = defaults;
+
+
+    return $http;
+
+
+    function createShortMethods(names) {
+      forEach(arguments, function(name) {
+        $http[name] = function(url, config) {
+          return $http(extend(config || {}, {
+            method: name,
+            url: url
+          }));
+        };
+      });
+    }
+
+
+    function createShortMethodsWithData(name) {
+      forEach(arguments, function(name) {
+        $http[name] = function(url, data, config) {
+          return $http(extend(config || {}, {
+            method: name,
+            url: url,
+            data: data
+          }));
+        };
+      });
+    }
+
+
+    /**
+     * Makes the request.
+     *
+     * !!! ACCESSES CLOSURE VARS:
+     * $httpBackend, defaults, $log, $rootScope, defaultCache, $http.pendingRequests
+     */
+    function sendReq(config, reqData) {
+      var deferred = $q.defer(),
+          promise = deferred.promise,
+          cache,
+          cachedResp,
+          reqHeaders = config.headers,
+          url = buildUrl(config.url, config.params);
+
+      $http.pendingRequests.push(config);
+      promise.then(removePendingReq, removePendingReq);
+
+
+      if ((config.cache || defaults.cache) && config.cache !== false &&
+          (config.method === 'GET' || config.method === 'JSONP')) {
+        cache = isObject(config.cache) ? config.cache
+              : isObject(defaults.cache) ? defaults.cache
+              : defaultCache;
+      }
+
+      if (cache) {
+        cachedResp = cache.get(url);
+        if (isDefined(cachedResp)) {
+          if (isPromiseLike(cachedResp)) {
+            // cached request has already been sent, but there is no response yet
+            cachedResp.then(resolvePromiseWithResult, resolvePromiseWithResult);
+          } else {
+            // serving from cache
+            if (isArray(cachedResp)) {
+              resolvePromise(cachedResp[1], cachedResp[0], shallowCopy(cachedResp[2]), cachedResp[3]);
+            } else {
+              resolvePromise(cachedResp, 200, {}, 'OK');
+            }
+          }
+        } else {
+          // put the promise for the non-transformed response into cache as a placeholder
+          cache.put(url, promise);
+        }
+      }
+
+
+      // if we won't have the response in cache, set the xsrf headers and
+      // send the request to the backend
+      if (isUndefined(cachedResp)) {
+        var xsrfValue = urlIsSameOrigin(config.url)
+            ? $browser.cookies()[config.xsrfCookieName || defaults.xsrfCookieName]
+            : undefined;
+        if (xsrfValue) {
+          reqHeaders[(config.xsrfHeaderName || defaults.xsrfHeaderName)] = xsrfValue;
+        }
+
+        $httpBackend(config.method, url, reqData, done, reqHeaders, config.timeout,
+            config.withCredentials, config.responseType);
+      }
+
+      return promise;
+
+
+      /**
+       * Callback registered to $httpBackend():
+       *  - caches the response if desired
+       *  - resolves the raw $http promise
+       *  - calls $apply
+       */
+      function done(status, response, headersString, statusText) {
+        if (cache) {
+          if (isSuccess(status)) {
+            cache.put(url, [status, response, parseHeaders(headersString), statusText]);
+          } else {
+            // remove promise from the cache
+            cache.remove(url);
+          }
+        }
+
+        function resolveHttpPromise() {
+          resolvePromise(response, status, headersString, statusText);
+        }
+
+        if (useApplyAsync) {
+          $rootScope.$applyAsync(resolveHttpPromise);
+        } else {
+          resolveHttpPromise();
+          if (!$rootScope.$$phase) $rootScope.$apply();
+        }
+      }
+
+
+      /**
+       * Resolves the raw $http promise.
+       */
+      function resolvePromise(response, status, headers, statusText) {
+        //status: HTTP response status code, 0, -1 (aborted by timeout / promise)
+        status = status >= -1 ? status : 0;
+
+        (isSuccess(status) ? deferred.resolve : deferred.reject)({
+          data: response,
+          status: status,
+          headers: headersGetter(headers),
+          config: config,
+          statusText: statusText
+        });
+      }
+
+      function resolvePromiseWithResult(result) {
+        resolvePromise(result.data, result.status, shallowCopy(result.headers()), result.statusText);
+      }
+
+      function removePendingReq() {
+        var idx = $http.pendingRequests.indexOf(config);
+        if (idx !== -1) $http.pendingRequests.splice(idx, 1);
+      }
+    }
+
+
+    function buildUrl(url, params) {
+      if (!params) return url;
+      var parts = [];
+      forEachSorted(params, function(value, key) {
+        if (value === null || isUndefined(value)) return;
+        if (!isArray(value)) value = [value];
+
+        forEach(value, function(v) {
+          if (isObject(v)) {
+            if (isDate(v)) {
+              v = v.toISOString();
+            } else {
+              v = toJson(v);
+            }
+          }
+          parts.push(encodeUriQuery(key) + '=' +
+                     encodeUriQuery(v));
+        });
+      });
+      if (parts.length > 0) {
+        url += ((url.indexOf('?') == -1) ? '?' : '&') + parts.join('&');
+      }
+      return url;
+    }
+  }];
+}
+
+function createXhr() {
+    return new window.XMLHttpRequest();
+}
+
+/**
+ * @ngdoc service
+ * @name $httpBackend
+ * @requires $window
+ * @requires $document
+ *
+ * @description
+ * HTTP backend used by the {@link ng.$http service} that delegates to
+ * XMLHttpRequest object or JSONP and deals with browser incompatibilities.
+ *
+ * You should never need to use this service directly, instead use the higher-level abstractions:
+ * {@link ng.$http $http} or {@link ngResource.$resource $resource}.
+ *
+ * During testing this implementation is swapped with {@link ngMock.$httpBackend mock
+ * $httpBackend} which can be trained with responses.
+ */
+function $HttpBackendProvider() {
+  this.$get = ['$browser', '$window', '$document', function($browser, $window, $document) {
+    return createHttpBackend($browser, createXhr, $browser.defer, $window.angular.callbacks, $document[0]);
+  }];
+}
+
+function createHttpBackend($browser, createXhr, $browserDefer, callbacks, rawDocument) {
+  // TODO(vojta): fix the signature
+  return function(method, url, post, callback, headers, timeout, withCredentials, responseType) {
+    $browser.$$incOutstandingRequestCount();
+    url = url || $browser.url();
+
+    if (lowercase(method) == 'jsonp') {
+      var callbackId = '_' + (callbacks.counter++).toString(36);
+      callbacks[callbackId] = function(data) {
+        callbacks[callbackId].data = data;
+        callbacks[callbackId].called = true;
+      };
+
+      var jsonpDone = jsonpReq(url.replace('JSON_CALLBACK', 'angular.callbacks.' + callbackId),
+          callbackId, function(status, text) {
+        completeRequest(callback, status, callbacks[callbackId].data, "", text);
+        callbacks[callbackId] = noop;
+      });
+    } else {
+
+      var xhr = createXhr();
+
+      xhr.open(method, url, true);
+      forEach(headers, function(value, key) {
+        if (isDefined(value)) {
+            xhr.setRequestHeader(key, value);
+        }
+      });
+
+      xhr.onload = function requestLoaded() {
+        var statusText = xhr.statusText || '';
+
+        // responseText is the old-school way of retrieving response (supported by IE9)
+        // response/responseType properties were introduced in XHR Level2 spec (supported by IE10)
+        var response = ('response' in xhr) ? xhr.response : xhr.responseText;
+
+        // normalize IE9 bug (http://bugs.jquery.com/ticket/1450)
+        var status = xhr.status === 1223 ? 204 : xhr.status;
+
+        // fix status code when it is 0 (0 status is undocumented).
+        // Occurs when accessing file resources or on Android 4.1 stock browser
+        // while retrieving files from application cache.
+        if (status === 0) {
+          status = response ? 200 : urlResolve(url).protocol == 'file' ? 404 : 0;
+        }
+
+        completeRequest(callback,
+            status,
+            response,
+            xhr.getAllResponseHeaders(),
+            statusText);
+      };
+
+      var requestError = function() {
+        // The response is always empty
+        // See https://xhr.spec.whatwg.org/#request-error-steps and https://fetch.spec.whatwg.org/#concept-network-error
+        completeRequest(callback, -1, null, null, '');
+      };
+
+      xhr.onerror = requestError;
+      xhr.onabort = requestError;
+
+      if (withCredentials) {
+        xhr.withCredentials = true;
+      }
+
+      if (responseType) {
+        try {
+          xhr.responseType = responseType;
+        } catch (e) {
+          // WebKit added support for the json responseType value on 09/03/2013
+          // https://bugs.webkit.org/show_bug.cgi?id=73648. Versions of Safari prior to 7 are
+          // known to throw when setting the value "json" as the response type. Other older
+          // browsers implementing the responseType
+          //
+          // The json response type can be ignored if not supported, because JSON payloads are
+          // parsed on the client-side regardless.
+          if (responseType !== 'json') {
+            throw e;
+          }
+        }
+      }
+
+      xhr.send(post || null);
+    }
+
+    if (timeout > 0) {
+      var timeoutId = $browserDefer(timeoutRequest, timeout);
+    } else if (isPromiseLike(timeout)) {
+      timeout.then(timeoutRequest);
+    }
+
+
+    function timeoutRequest() {
+      jsonpDone && jsonpDone();
+      xhr && xhr.abort();
+    }
+
+    function completeRequest(callback, status, response, headersString, statusText) {
+      // cancel timeout and subsequent timeout promise resolution
+      if (timeoutId !== undefined) {
+        $browserDefer.cancel(timeoutId);
+      }
+      jsonpDone = xhr = null;
+
+      callback(status, response, headersString, statusText);
+      $browser.$$completeOutstandingRequest(noop);
+    }
+  };
+
+  function jsonpReq(url, callbackId, done) {
+    // we can't use jQuery/jqLite here because jQuery does crazy stuff with script elements, e.g.:
+    // - fetches local scripts via XHR and evals them
+    // - adds and immediately removes script elements from the document
+    var script = rawDocument.createElement('script'), callback = null;
+    script.type = "text/javascript";
+    script.src = url;
+    script.async = true;
+
+    callback = function(event) {
+      removeEventListenerFn(script, "load", callback);
+      removeEventListenerFn(script, "error", callback);
+      rawDocument.body.removeChild(script);
+      script = null;
+      var status = -1;
+      var text = "unknown";
+
+      if (event) {
+        if (event.type === "load" && !callbacks[callbackId].called) {
+          event = { type: "error" };
+        }
+        text = event.type;
+        status = event.type === "error" ? 404 : 200;
+      }
+
+      if (done) {
+        done(status, text);
+      }
+    };
+
+    addEventListenerFn(script, "load", callback);
+    addEventListenerFn(script, "error", callback);
+    rawDocument.body.appendChild(script);
+    return callback;
+  }
+}
+
+var $interpolateMinErr = minErr('$interpolate');
+
+/**
+ * @ngdoc provider
+ * @name $interpolateProvider
+ *
+ * @description
+ *
+ * Used for configuring the interpolation markup. Defaults to `{{` and `}}`.
+ *
+ * @example
+<example module="customInterpolationApp">
+<file name="index.html">
+<script>
+  var customInterpolationApp = angular.module('customInterpolationApp', []);
+
+  customInterpolationApp.config(function($interpolateProvider) {
+    $interpolateProvider.startSymbol('//');
+    $interpolateProvider.endSymbol('//');
+  });
+
+
+  customInterpolationApp.controller('DemoController', function() {
+      this.label = "This binding is brought you by // interpolation symbols.";
+  });
+</script>
+<div ng-app="App" ng-controller="DemoController as demo">
+    //demo.label//
+</div>
+</file>
+<file name="protractor.js" type="protractor">
+  it('should interpolate binding with custom symbols', function() {
+    expect(element(by.binding('demo.label')).getText()).toBe('This binding is brought you by // interpolation symbols.');
+  });
+</file>
+</example>
+ */
+function $InterpolateProvider() {
+  var startSymbol = '{{';
+  var endSymbol = '}}';
+
+  /**
+   * @ngdoc method
+   * @name $interpolateProvider#startSymbol
+   * @description
+   * Symbol to denote start of expression in the interpolated string. Defaults to `{{`.
+   *
+   * @param {string=} value new value to set the starting symbol to.
+   * @returns {string|self} Returns the symbol when used as getter and self if used as setter.
+   */
+  this.startSymbol = function(value) {
+    if (value) {
+      startSymbol = value;
+      return this;
+    } else {
+      return startSymbol;
+    }
+  };
+
+  /**
+   * @ngdoc method
+   * @name $interpolateProvider#endSymbol
+   * @description
+   * Symbol to denote the end of expression in the interpolated string. Defaults to `}}`.
+   *
+   * @param {string=} value new value to set the ending symbol to.
+   * @returns {string|self} Returns the symbol when used as getter and self if used as setter.
+   */
+  this.endSymbol = function(value) {
+    if (value) {
+      endSymbol = value;
+      return this;
+    } else {
+      return endSymbol;
+    }
+  };
+
+
+  this.$get = ['$parse', '$exceptionHandler', '$sce', function($parse, $exceptionHandler, $sce) {
+    var startSymbolLength = startSymbol.length,
+        endSymbolLength = endSymbol.length,
+        escapedStartRegexp = new RegExp(startSymbol.replace(/./g, escape), 'g'),
+        escapedEndRegexp = new RegExp(endSymbol.replace(/./g, escape), 'g');
+
+    function escape(ch) {
+      return '\\\\\\' + ch;
+    }
+
+    /**
+     * @ngdoc service
+     * @name $interpolate
+     * @kind function
+     *
+     * @requires $parse
+     * @requires $sce
+     *
+     * @description
+     *
+     * Compiles a string with markup into an interpolation function. This service is used by the
+     * HTML {@link ng.$compile $compile} service for data binding. See
+     * {@link ng.$interpolateProvider $interpolateProvider} for configuring the
+     * interpolation markup.
+     *
+     *
+     * ```js
+     *   var $interpolate = ...; // injected
+     *   var exp = $interpolate('Hello {{name | uppercase}}!');
+     *   expect(exp({name:'Angular'}).toEqual('Hello ANGULAR!');
+     * ```
+     *
+     * `$interpolate` takes an optional fourth argument, `allOrNothing`. If `allOrNothing` is
+     * `true`, the interpolation function will return `undefined` unless all embedded expressions
+     * evaluate to a value other than `undefined`.
+     *
+     * ```js
+     *   var $interpolate = ...; // injected
+     *   var context = {greeting: 'Hello', name: undefined };
+     *
+     *   // default "forgiving" mode
+     *   var exp = $interpolate('{{greeting}} {{name}}!');
+     *   expect(exp(context)).toEqual('Hello !');
+     *
+     *   // "allOrNothing" mode
+     *   exp = $interpolate('{{greeting}} {{name}}!', false, null, true);
+     *   expect(exp(context)).toBeUndefined();
+     *   context.name = 'Angular';
+     *   expect(exp(context)).toEqual('Hello Angular!');
+     * ```
+     *
+     * `allOrNothing` is useful for interpolating URLs. `ngSrc` and `ngSrcset` use this behavior.
+     *
+     * ####Escaped Interpolation
+     * $interpolate provides a mechanism for escaping interpolation markers. Start and end markers
+     * can be escaped by preceding each of their characters with a REVERSE SOLIDUS U+005C (backslash).
+     * It will be rendered as a regular start/end marker, and will not be interpreted as an expression
+     * or binding.
+     *
+     * This enables web-servers to prevent script injection attacks and defacing attacks, to some
+     * degree, while also enabling code examples to work without relying on the
+     * {@link ng.directive:ngNonBindable ngNonBindable} directive.
+     *
+     * **For security purposes, it is strongly encouraged that web servers escape user-supplied data,
+     * replacing angle brackets (&lt;, &gt;) with &amp;lt; and &amp;gt; respectively, and replacing all
+     * interpolation start/end markers with their escaped counterparts.**
+     *
+     * Escaped interpolation markers are only replaced with the actual interpolation markers in rendered
+     * output when the $interpolate service processes the text. So, for HTML elements interpolated
+     * by {@link ng.$compile $compile}, or otherwise interpolated with the `mustHaveExpression` parameter
+     * set to `true`, the interpolated text must contain an unescaped interpolation expression. As such,
+     * this is typically useful only when user-data is used in rendering a template from the server, or
+     * when otherwise untrusted data is used by a directive.
+     *
+     * <example>
+     *  <file name="index.html">
+     *    <div ng-init="username='A user'">
+     *      <p ng-init="apptitle='Escaping demo'">{{apptitle}}: \{\{ username = "defaced value"; \}\}
+     *        </p>
+     *      <p><strong>{{username}}</strong> attempts to inject code which will deface the
+     *        application, but fails to accomplish their task, because the server has correctly
+     *        escaped the interpolation start/end markers with REVERSE SOLIDUS U+005C (backslash)
+     *        characters.</p>
+     *      <p>Instead, the result of the attempted script injection is visible, and can be removed
+     *        from the database by an administrator.</p>
+     *    </div>
+     *  </file>
+     * </example>
+     *
+     * @param {string} text The text with markup to interpolate.
+     * @param {boolean=} mustHaveExpression if set to true then the interpolation string must have
+     *    embedded expression in order to return an interpolation function. Strings with no
+     *    embedded expression will return null for the interpolation function.
+     * @param {string=} trustedContext when provided, the returned function passes the interpolated
+     *    result through {@link ng.$sce#getTrusted $sce.getTrusted(interpolatedResult,
+     *    trustedContext)} before returning it.  Refer to the {@link ng.$sce $sce} service that
+     *    provides Strict Contextual Escaping for details.
+     * @param {boolean=} allOrNothing if `true`, then the returned function returns undefined
+     *    unless all embedded expressions evaluate to a value other than `undefined`.
+     * @returns {function(context)} an interpolation function which is used to compute the
+     *    interpolated string. The function has these parameters:
+     *
+     * - `context`: evaluation context for all expressions embedded in the interpolated text
+     */
+    function $interpolate(text, mustHaveExpression, trustedContext, allOrNothing) {
+      allOrNothing = !!allOrNothing;
+      var startIndex,
+          endIndex,
+          index = 0,
+          expressions = [],
+          parseFns = [],
+          textLength = text.length,
+          exp,
+          concat = [],
+          expressionPositions = [];
+
+      while (index < textLength) {
+        if (((startIndex = text.indexOf(startSymbol, index)) != -1) &&
+             ((endIndex = text.indexOf(endSymbol, startIndex + startSymbolLength)) != -1)) {
+          if (index !== startIndex) {
+            concat.push(unescapeText(text.substring(index, startIndex)));
+          }
+          exp = text.substring(startIndex + startSymbolLength, endIndex);
+          expressions.push(exp);
+          parseFns.push($parse(exp, parseStringifyInterceptor));
+          index = endIndex + endSymbolLength;
+          expressionPositions.push(concat.length);
+          concat.push('');
+        } else {
+          // we did not find an interpolation, so we have to add the remainder to the separators array
+          if (index !== textLength) {
+            concat.push(unescapeText(text.substring(index)));
+          }
+          break;
+        }
+      }
+
+      // Concatenating expressions makes it hard to reason about whether some combination of
+      // concatenated values are unsafe to use and could easily lead to XSS.  By requiring that a
+      // single expression be used for iframe[src], object[src], etc., we ensure that the value
+      // that's used is assigned or constructed by some JS code somewhere that is more testable or
+      // make it obvious that you bound the value to some user controlled value.  This helps reduce
+      // the load when auditing for XSS issues.
+      if (trustedContext && concat.length > 1) {
+          throw $interpolateMinErr('noconcat',
+              "Error while interpolating: {0}\nStrict Contextual Escaping disallows " +
+              "interpolations that concatenate multiple expressions when a trusted value is " +
+              "required.  See http://docs.angularjs.org/api/ng.$sce", text);
+      }
+
+      if (!mustHaveExpression || expressions.length) {
+        var compute = function(values) {
+          for (var i = 0, ii = expressions.length; i < ii; i++) {
+            if (allOrNothing && isUndefined(values[i])) return;
+            concat[expressionPositions[i]] = values[i];
+          }
+          return concat.join('');
+        };
+
+        var getValue = function(value) {
+          return trustedContext ?
+            $sce.getTrusted(trustedContext, value) :
+            $sce.valueOf(value);
+        };
+
+        var stringify = function(value) {
+          if (value == null) { // null || undefined
+            return '';
+          }
+          switch (typeof value) {
+            case 'string':
+              break;
+            case 'number':
+              value = '' + value;
+              break;
+            default:
+              value = toJson(value);
+          }
+
+          return value;
+        };
+
+        return extend(function interpolationFn(context) {
+            var i = 0;
+            var ii = expressions.length;
+            var values = new Array(ii);
+
+            try {
+              for (; i < ii; i++) {
+                values[i] = parseFns[i](context);
+              }
+
+              return compute(values);
+            } catch (err) {
+              var newErr = $interpolateMinErr('interr', "Can't interpolate: {0}\n{1}", text,
+                  err.toString());
+              $exceptionHandler(newErr);
+            }
+
+          }, {
+          // all of these properties are undocumented for now
+          exp: text, //just for compatibility with regular watchers created via $watch
+          expressions: expressions,
+          $$watchDelegate: function(scope, listener, objectEquality) {
+            var lastValue;
+            return scope.$watchGroup(parseFns, function interpolateFnWatcher(values, oldValues) {
+              var currValue = compute(values);
+              if (isFunction(listener)) {
+                listener.call(this, currValue, values !== oldValues ? lastValue : currValue, scope);
+              }
+              lastValue = currValue;
+            }, objectEquality);
+          }
+        });
+      }
+
+      function unescapeText(text) {
+        return text.replace(escapedStartRegexp, startSymbol).
+          replace(escapedEndRegexp, endSymbol);
+      }
+
+      function parseStringifyInterceptor(value) {
+        try {
+          value = getValue(value);
+          return allOrNothing && !isDefined(value) ? value : stringify(value);
+        } catch (err) {
+          var newErr = $interpolateMinErr('interr', "Can't interpolate: {0}\n{1}", text,
+            err.toString());
+          $exceptionHandler(newErr);
+        }
+      }
+    }
+
+
+    /**
+     * @ngdoc method
+     * @name $interpolate#startSymbol
+     * @description
+     * Symbol to denote the start of expression in the interpolated string. Defaults to `{{`.
+     *
+     * Use {@link ng.$interpolateProvider#startSymbol `$interpolateProvider.startSymbol`} to change
+     * the symbol.
+     *
+     * @returns {string} start symbol.
+     */
+    $interpolate.startSymbol = function() {
+      return startSymbol;
+    };
+
+
+    /**
+     * @ngdoc method
+     * @name $interpolate#endSymbol
+     * @description
+     * Symbol to denote the end of expression in the interpolated string. Defaults to `}}`.
+     *
+     * Use {@link ng.$interpolateProvider#endSymbol `$interpolateProvider.endSymbol`} to change
+     * the symbol.
+     *
+     * @returns {string} end symbol.
+     */
+    $interpolate.endSymbol = function() {
+      return endSymbol;
+    };
+
+    return $interpolate;
+  }];
+}
+
+function $IntervalProvider() {
+  this.$get = ['$rootScope', '$window', '$q', '$$q',
+       function($rootScope,   $window,   $q,   $$q) {
+    var intervals = {};
+
+
+     /**
+      * @ngdoc service
+      * @name $interval
+      *
+      * @description
+      * Angular's wrapper for `window.setInterval`. The `fn` function is executed every `delay`
+      * milliseconds.
+      *
+      * The return value of registering an interval function is a promise. This promise will be
+      * notified upon each tick of the interval, and will be resolved after `count` iterations, or
+      * run indefinitely if `count` is not defined. The value of the notification will be the
+      * number of iterations that have run.
+      * To cancel an interval, call `$interval.cancel(promise)`.
+      *
+      * In tests you can use {@link ngMock.$interval#flush `$interval.flush(millis)`} to
+      * move forward by `millis` milliseconds and trigger any functions scheduled to run in that
+      * time.
+      *
+      * <div class="alert alert-warning">
+      * **Note**: Intervals created by this service must be explicitly destroyed when you are finished
+      * with them.  In particular they are not automatically destroyed when a controller's scope or a
+      * directive's element are destroyed.
+      * You should take this into consideration and make sure to always cancel the interval at the
+      * appropriate moment.  See the example below for more details on how and when to do this.
+      * </div>
+      *
+      * @param {function()} fn A function that should be called repeatedly.
+      * @param {number} delay Number of milliseconds between each function call.
+      * @param {number=} [count=0] Number of times to repeat. If not set, or 0, will repeat
+      *   indefinitely.
+      * @param {boolean=} [invokeApply=true] If set to `false` skips model dirty checking, otherwise
+      *   will invoke `fn` within the {@link ng.$rootScope.Scope#$apply $apply} block.
+      * @returns {promise} A promise which will be notified on each iteration.
+      *
+      * @example
+      * <example module="intervalExample">
+      * <file name="index.html">
+      *   <script>
+      *     angular.module('intervalExample', [])
+      *       .controller('ExampleController', ['$scope', '$interval',
+      *         function($scope, $interval) {
+      *           $scope.format = 'M/d/yy h:mm:ss a';
+      *           $scope.blood_1 = 100;
+      *           $scope.blood_2 = 120;
+      *
+      *           var stop;
+      *           $scope.fight = function() {
+      *             // Don't start a new fight if we are already fighting
+      *             if ( angular.isDefined(stop) ) return;
+      *
+      *             stop = $interval(function() {
+      *               if ($scope.blood_1 > 0 && $scope.blood_2 > 0) {
+      *                 $scope.blood_1 = $scope.blood_1 - 3;
+      *                 $scope.blood_2 = $scope.blood_2 - 4;
+      *               } else {
+      *                 $scope.stopFight();
+      *               }
+      *             }, 100);
+      *           };
+      *
+      *           $scope.stopFight = function() {
+      *             if (angular.isDefined(stop)) {
+      *               $interval.cancel(stop);
+      *               stop = undefined;
+      *             }
+      *           };
+      *
+      *           $scope.resetFight = function() {
+      *             $scope.blood_1 = 100;
+      *             $scope.blood_2 = 120;
+      *           };
+      *
+      *           $scope.$on('$destroy', function() {
+      *             // Make sure that the interval is destroyed too
+      *             $scope.stopFight();
+      *           });
+      *         }])
+      *       // Register the 'myCurrentTime' directive factory method.
+      *       // We inject $interval and dateFilter service since the factory method is DI.
+      *       .directive('myCurrentTime', ['$interval', 'dateFilter',
+      *         function($interval, dateFilter) {
+      *           // return the directive link function. (compile function not needed)
+      *           return function(scope, element, attrs) {
+      *             var format,  // date format
+      *                 stopTime; // so that we can cancel the time updates
+      *
+      *             // used to update the UI
+      *             function updateTime() {
+      *               element.text(dateFilter(new Date(), format));
+      *             }
+      *
+      *             // watch the expression, and update the UI on change.
+      *             scope.$watch(attrs.myCurrentTime, function(value) {
+      *               format = value;
+      *               updateTime();
+      *             });
+      *
+      *             stopTime = $interval(updateTime, 1000);
+      *
+      *             // listen on DOM destroy (removal) event, and cancel the next UI update
+      *             // to prevent updating time after the DOM element was removed.
+      *             element.on('$destroy', function() {
+      *               $interval.cancel(stopTime);
+      *             });
+      *           }
+      *         }]);
+      *   </script>
+      *
+      *   <div>
+      *     <div ng-controller="ExampleController">
+      *       Date format: <input ng-model="format"> <hr/>
+      *       Current time is: <span my-current-time="format"></span>
+      *       <hr/>
+      *       Blood 1 : <font color='red'>{{blood_1}}</font>
+      *       Blood 2 : <font color='red'>{{blood_2}}</font>
+      *       <button type="button" data-ng-click="fight()">Fight</button>
+      *       <button type="button" data-ng-click="stopFight()">StopFight</button>
+      *       <button type="button" data-ng-click="resetFight()">resetFight</button>
+      *     </div>
+      *   </div>
+      *
+      * </file>
+      * </example>
+      */
+    function interval(fn, delay, count, invokeApply) {
+      var setInterval = $window.setInterval,
+          clearInterval = $window.clearInterval,
+          iteration = 0,
+          skipApply = (isDefined(invokeApply) && !invokeApply),
+          deferred = (skipApply ? $$q : $q).defer(),
+          promise = deferred.promise;
+
+      count = isDefined(count) ? count : 0;
+
+      promise.then(null, null, fn);
+
+      promise.$$intervalId = setInterval(function tick() {
+        deferred.notify(iteration++);
+
+        if (count > 0 && iteration >= count) {
+          deferred.resolve(iteration);
+          clearInterval(promise.$$intervalId);
+          delete intervals[promise.$$intervalId];
+        }
+
+        if (!skipApply) $rootScope.$apply();
+
+      }, delay);
+
+      intervals[promise.$$intervalId] = deferred;
+
+      return promise;
+    }
+
+
+     /**
+      * @ngdoc method
+      * @name $interval#cancel
+      *
+      * @description
+      * Cancels a task associated with the `promise`.
+      *
+      * @param {promise} promise returned by the `$interval` function.
+      * @returns {boolean} Returns `true` if the task was successfully canceled.
+      */
+    interval.cancel = function(promise) {
+      if (promise && promise.$$intervalId in intervals) {
+        intervals[promise.$$intervalId].reject('canceled');
+        $window.clearInterval(promise.$$intervalId);
+        delete intervals[promise.$$intervalId];
+        return true;
+      }
+      return false;
+    };
+
+    return interval;
+  }];
+}
+
+/**
+ * @ngdoc service
+ * @name $locale
+ *
+ * @description
+ * $locale service provides localization rules for various Angular components. As of right now the
+ * only public api is:
+ *
+ * * `id` – `{string}` – locale id formatted as `languageId-countryId` (e.g. `en-us`)
+ */
+function $LocaleProvider() {
+  this.$get = function() {
+    return {
+      id: 'en-us',
+
+      NUMBER_FORMATS: {
+        DECIMAL_SEP: '.',
+        GROUP_SEP: ',',
+        PATTERNS: [
+          { // Decimal Pattern
+            minInt: 1,
+            minFrac: 0,
+            maxFrac: 3,
+            posPre: '',
+            posSuf: '',
+            negPre: '-',
+            negSuf: '',
+            gSize: 3,
+            lgSize: 3
+          },{ //Currency Pattern
+            minInt: 1,
+            minFrac: 2,
+            maxFrac: 2,
+            posPre: '\u00A4',
+            posSuf: '',
+            negPre: '(\u00A4',
+            negSuf: ')',
+            gSize: 3,
+            lgSize: 3
+          }
+        ],
+        CURRENCY_SYM: '$'
+      },
+
+      DATETIME_FORMATS: {
+        MONTH:
+            'January,February,March,April,May,June,July,August,September,October,November,December'
+            .split(','),
+        SHORTMONTH:  'Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec'.split(','),
+        DAY: 'Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday'.split(','),
+        SHORTDAY: 'Sun,Mon,Tue,Wed,Thu,Fri,Sat'.split(','),
+        AMPMS: ['AM','PM'],
+        medium: 'MMM d, y h:mm:ss a',
+        'short': 'M/d/yy h:mm a',
+        fullDate: 'EEEE, MMMM d, y',
+        longDate: 'MMMM d, y',
+        mediumDate: 'MMM d, y',
+        shortDate: 'M/d/yy',
+        mediumTime: 'h:mm:ss a',
+        shortTime: 'h:mm a',
+        ERANAMES: [
+          "Before Christ",
+          "Anno Domini"
+        ],
+        ERAS: [
+          "BC",
+          "AD"
+        ]
+      },
+
+      pluralCat: function(num) {
+        if (num === 1) {
+          return 'one';
+        }
+        return 'other';
+      }
+    };
+  };
+}
+
+var PATH_MATCH = /^([^\?#]*)(\?([^#]*))?(#(.*))?$/,
+    DEFAULT_PORTS = {'http': 80, 'https': 443, 'ftp': 21};
+var $locationMinErr = minErr('$location');
+
+
+/**
+ * Encode path using encodeUriSegment, ignoring forward slashes
+ *
+ * @param {string} path Path to encode
+ * @returns {string}
+ */
+function encodePath(path) {
+  var segments = path.split('/'),
+      i = segments.length;
+
+  while (i--) {
+    segments[i] = encodeUriSegment(segments[i]);
+  }
+
+  return segments.join('/');
+}
+
+function parseAbsoluteUrl(absoluteUrl, locationObj) {
+  var parsedUrl = urlResolve(absoluteUrl);
+
+  locationObj.$$protocol = parsedUrl.protocol;
+  locationObj.$$host = parsedUrl.hostname;
+  locationObj.$$port = int(parsedUrl.port) || DEFAULT_PORTS[parsedUrl.protocol] || null;
+}
+
+
+function parseAppUrl(relativeUrl, locationObj) {
+  var prefixed = (relativeUrl.charAt(0) !== '/');
+  if (prefixed) {
+    relativeUrl = '/' + relativeUrl;
+  }
+  var match = urlResolve(relativeUrl);
+  locationObj.$$path = decodeURIComponent(prefixed && match.pathname.charAt(0) === '/' ?
+      match.pathname.substring(1) : match.pathname);
+  locationObj.$$search = parseKeyValue(match.search);
+  locationObj.$$hash = decodeURIComponent(match.hash);
+
+  // make sure path starts with '/';
+  if (locationObj.$$path && locationObj.$$path.charAt(0) != '/') {
+    locationObj.$$path = '/' + locationObj.$$path;
+  }
+}
+
+
+/**
+ *
+ * @param {string} begin
+ * @param {string} whole
+ * @returns {string} returns text from whole after begin or undefined if it does not begin with
+ *                   expected string.
+ */
+function beginsWith(begin, whole) {
+  if (whole.indexOf(begin) === 0) {
+    return whole.substr(begin.length);
+  }
+}
+
+
+function stripHash(url) {
+  var index = url.indexOf('#');
+  return index == -1 ? url : url.substr(0, index);
+}
+
+function trimEmptyHash(url) {
+  return url.replace(/(#.+)|#$/, '$1');
+}
+
+
+function stripFile(url) {
+  return url.substr(0, stripHash(url).lastIndexOf('/') + 1);
+}
+
+/* return the server only (scheme://host:port) */
+function serverBase(url) {
+  return url.substring(0, url.indexOf('/', url.indexOf('//') + 2));
+}
+
+
+/**
+ * LocationHtml5Url represents an url
+ * This object is exposed as $location service when HTML5 mode is enabled and supported
+ *
+ * @constructor
+ * @param {string} appBase application base URL
+ * @param {string} appBaseNoFile application base URL stripped of any filename
+ * @param {string} basePrefix url path prefix
+ */
+function LocationHtml5Url(appBase, appBaseNoFile, basePrefix) {
+  this.$$html5 = true;
+  basePrefix = basePrefix || '';
+  parseAbsoluteUrl(appBase, this);
+
+
+  /**
+   * Parse given html5 (regular) url string into properties
+   * @param {string} url HTML5 url
+   * @private
+   */
+  this.$$parse = function(url) {
+    var pathUrl = beginsWith(appBaseNoFile, url);
+    if (!isString(pathUrl)) {
+      throw $locationMinErr('ipthprfx', 'Invalid url "{0}", missing path prefix "{1}".', url,
+          appBaseNoFile);
+    }
+
+    parseAppUrl(pathUrl, this);
+
+    if (!this.$$path) {
+      this.$$path = '/';
+    }
+
+    this.$$compose();
+  };
+
+  /**
+   * Compose url and update `absUrl` property
+   * @private
+   */
+  this.$$compose = function() {
+    var search = toKeyValue(this.$$search),
+        hash = this.$$hash ? '#' + encodeUriSegment(this.$$hash) : '';
+
+    this.$$url = encodePath(this.$$path) + (search ? '?' + search : '') + hash;
+    this.$$absUrl = appBaseNoFile + this.$$url.substr(1); // first char is always '/'
+  };
+
+  this.$$parseLinkUrl = function(url, relHref) {
+    if (relHref && relHref[0] === '#') {
+      // special case for links to hash fragments:
+      // keep the old url and only replace the hash fragment
+      this.hash(relHref.slice(1));
+      return true;
+    }
+    var appUrl, prevAppUrl;
+    var rewrittenUrl;
+
+    if ((appUrl = beginsWith(appBase, url)) !== undefined) {
+      prevAppUrl = appUrl;
+      if ((appUrl = beginsWith(basePrefix, appUrl)) !== undefined) {
+        rewrittenUrl = appBaseNoFile + (beginsWith('/', appUrl) || appUrl);
+      } else {
+        rewrittenUrl = appBase + prevAppUrl;
+      }
+    } else if ((appUrl = beginsWith(appBaseNoFile, url)) !== undefined) {
+      rewrittenUrl = appBaseNoFile + appUrl;
+    } else if (appBaseNoFile == url + '/') {
+      rewrittenUrl = appBaseNoFile;
+    }
+    if (rewrittenUrl) {
+      this.$$parse(rewrittenUrl);
+    }
+    return !!rewrittenUrl;
+  };
+}
+
+
+/**
+ * LocationHashbangUrl represents url
+ * This object is exposed as $location service when developer doesn't opt into html5 mode.
+ * It also serves as the base class for html5 mode fallback on legacy browsers.
+ *
+ * @constructor
+ * @param {string} appBase application base URL
+ * @param {string} appBaseNoFile application base URL stripped of any filename
+ * @param {string} hashPrefix hashbang prefix
+ */
+function LocationHashbangUrl(appBase, appBaseNoFile, hashPrefix) {
+
+  parseAbsoluteUrl(appBase, this);
+
+
+  /**
+   * Parse given hashbang url into properties
+   * @param {string} url Hashbang url
+   * @private
+   */
+  this.$$parse = function(url) {
+    var withoutBaseUrl = beginsWith(appBase, url) || beginsWith(appBaseNoFile, url);
+    var withoutHashUrl;
+
+    if (!isUndefined(withoutBaseUrl) && withoutBaseUrl.charAt(0) === '#') {
+
+      // The rest of the url starts with a hash so we have
+      // got either a hashbang path or a plain hash fragment
+      withoutHashUrl = beginsWith(hashPrefix, withoutBaseUrl);
+      if (isUndefined(withoutHashUrl)) {
+        // There was no hashbang prefix so we just have a hash fragment
+        withoutHashUrl = withoutBaseUrl;
+      }
+
+    } else {
+      // There was no hashbang path nor hash fragment:
+      // If we are in HTML5 mode we use what is left as the path;
+      // Otherwise we ignore what is left
+      if (this.$$html5) {
+        withoutHashUrl = withoutBaseUrl;
+      } else {
+        withoutHashUrl = '';
+        if (isUndefined(withoutBaseUrl)) {
+          appBase = url;
+          this.replace();
+        }
+      }
+    }
+
+    parseAppUrl(withoutHashUrl, this);
+
+    this.$$path = removeWindowsDriveName(this.$$path, withoutHashUrl, appBase);
+
+    this.$$compose();
+
+    /*
+     * In Windows, on an anchor node on documents loaded from
+     * the filesystem, the browser will return a pathname
+     * prefixed with the drive name ('/C:/path') when a
+     * pathname without a drive is set:
+     *  * a.setAttribute('href', '/foo')
+     *   * a.pathname === '/C:/foo' //true
+     *
+     * Inside of Angular, we're always using pathnames that
+     * do not include drive names for routing.
+     */
+    function removeWindowsDriveName(path, url, base) {
+      /*
+      Matches paths for file protocol on windows,
+      such as /C:/foo/bar, and captures only /foo/bar.
+      */
+      var windowsFilePathExp = /^\/[A-Z]:(\/.*)/;
+
+      var firstPathSegmentMatch;
+
+      //Get the relative path from the input URL.
+      if (url.indexOf(base) === 0) {
+        url = url.replace(base, '');
+      }
+
+      // The input URL intentionally contains a first path segment that ends with a colon.
+      if (windowsFilePathExp.exec(url)) {
+        return path;
+      }
+
+      firstPathSegmentMatch = windowsFilePathExp.exec(path);
+      return firstPathSegmentMatch ? firstPathSegmentMatch[1] : path;
+    }
+  };
+
+  /**
+   * Compose hashbang url and update `absUrl` property
+   * @private
+   */
+  this.$$compose = function() {
+    var search = toKeyValue(this.$$search),
+        hash = this.$$hash ? '#' + encodeUriSegment(this.$$hash) : '';
+
+    this.$$url = encodePath(this.$$path) + (search ? '?' + search : '') + hash;
+    this.$$absUrl = appBase + (this.$$url ? hashPrefix + this.$$url : '');
+  };
+
+  this.$$parseLinkUrl = function(url, relHref) {
+    if (stripHash(appBase) == stripHash(url)) {
+      this.$$parse(url);
+      return true;
+    }
+    return false;
+  };
+}
+
+
+/**
+ * LocationHashbangUrl represents url
+ * This object is exposed as $location service when html5 history api is enabled but the browser
+ * does not support it.
+ *
+ * @constructor
+ * @param {string} appBase application base URL
+ * @param {string} appBaseNoFile application base URL stripped of any filename
+ * @param {string} hashPrefix hashbang prefix
+ */
+function LocationHashbangInHtml5Url(appBase, appBaseNoFile, hashPrefix) {
+  this.$$html5 = true;
+  LocationHashbangUrl.apply(this, arguments);
+
+  this.$$parseLinkUrl = function(url, relHref) {
+    if (relHref && relHref[0] === '#') {
+      // special case for links to hash fragments:
+      // keep the old url and only replace the hash fragment
+      this.hash(relHref.slice(1));
+      return true;
+    }
+
+    var rewrittenUrl;
+    var appUrl;
+
+    if (appBase == stripHash(url)) {
+      rewrittenUrl = url;
+    } else if ((appUrl = beginsWith(appBaseNoFile, url))) {
+      rewrittenUrl = appBase + hashPrefix + appUrl;
+    } else if (appBaseNoFile === url + '/') {
+      rewrittenUrl = appBaseNoFile;
+    }
+    if (rewrittenUrl) {
+      this.$$parse(rewrittenUrl);
+    }
+    return !!rewrittenUrl;
+  };
+
+  this.$$compose = function() {
+    var search = toKeyValue(this.$$search),
+        hash = this.$$hash ? '#' + encodeUriSegment(this.$$hash) : '';
+
+    this.$$url = encodePath(this.$$path) + (search ? '?' + search : '') + hash;
+    // include hashPrefix in $$absUrl when $$url is empty so IE9 does not reload page because of removal of '#'
+    this.$$absUrl = appBase + hashPrefix + this.$$url;
+  };
+
+}
+
+
+var locationPrototype = {
+
+  /**
+   * Are we in html5 mode?
+   * @private
+   */
+  $$html5: false,
+
+  /**
+   * Has any change been replacing?
+   * @private
+   */
+  $$replace: false,
+
+  /**
+   * @ngdoc method
+   * @name $location#absUrl
+   *
+   * @description
+   * This method is getter only.
+   *
+   * Return full url representation with all segments encoded according to rules specified in
+   * [RFC 3986](http://www.ietf.org/rfc/rfc3986.txt).
+   *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var absUrl = $location.absUrl();
+   * // => "http://example.com/#/some/path?foo=bar&baz=xoxo"
+   * ```
+   *
+   * @return {string} full url
+   */
+  absUrl: locationGetter('$$absUrl'),
+
+  /**
+   * @ngdoc method
+   * @name $location#url
+   *
+   * @description
+   * This method is getter / setter.
+   *
+   * Return url (e.g. `/path?a=b#hash`) when called without any parameter.
+   *
+   * Change path, search and hash, when called with parameter and return `$location`.
+   *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var url = $location.url();
+   * // => "/some/path?foo=bar&baz=xoxo"
+   * ```
+   *
+   * @param {string=} url New url without base prefix (e.g. `/path?a=b#hash`)
+   * @return {string} url
+   */
+  url: function(url) {
+    if (isUndefined(url))
+      return this.$$url;
+
+    var match = PATH_MATCH.exec(url);
+    if (match[1] || url === '') this.path(decodeURIComponent(match[1]));
+    if (match[2] || match[1] || url === '') this.search(match[3] || '');
+    this.hash(match[5] || '');
+
+    return this;
+  },
+
+  /**
+   * @ngdoc method
+   * @name $location#protocol
+   *
+   * @description
+   * This method is getter only.
+   *
+   * Return protocol of current url.
+   *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var protocol = $location.protocol();
+   * // => "http"
+   * ```
+   *
+   * @return {string} protocol of current url
+   */
+  protocol: locationGetter('$$protocol'),
+
+  /**
+   * @ngdoc method
+   * @name $location#host
+   *
+   * @description
+   * This method is getter only.
+   *
+   * Return host of current url.
+   *
+   * Note: compared to the non-angular version `location.host` which returns `hostname:port`, this returns the `hostname` portion only.
+   *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var host = $location.host();
+   * // => "example.com"
+   *
+   * // given url http://user:password@example.com:8080/#/some/path?foo=bar&baz=xoxo
+   * host = $location.host();
+   * // => "example.com"
+   * host = location.host;
+   * // => "example.com:8080"
+   * ```
+   *
+   * @return {string} host of current url.
+   */
+  host: locationGetter('$$host'),
+
+  /**
+   * @ngdoc method
+   * @name $location#port
+   *
+   * @description
+   * This method is getter only.
+   *
+   * Return port of current url.
+   *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var port = $location.port();
+   * // => 80
+   * ```
+   *
+   * @return {Number} port
+   */
+  port: locationGetter('$$port'),
+
+  /**
+   * @ngdoc method
+   * @name $location#path
+   *
+   * @description
+   * This method is getter / setter.
+   *
+   * Return path of current url when called without any parameter.
+   *
+   * Change path when called with parameter and return `$location`.
+   *
+   * Note: Path should always begin with forward slash (/), this method will add the forward slash
+   * if it is missing.
+   *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var path = $location.path();
+   * // => "/some/path"
+   * ```
+   *
+   * @param {(string|number)=} path New path
+   * @return {string} path
+   */
+  path: locationGetterSetter('$$path', function(path) {
+    path = path !== null ? path.toString() : '';
+    return path.charAt(0) == '/' ? path : '/' + path;
+  }),
+
+  /**
+   * @ngdoc method
+   * @name $location#search
+   *
+   * @description
+   * This method is getter / setter.
+   *
+   * Return search part (as object) of current url when called without any parameter.
+   *
+   * Change search part when called with parameter and return `$location`.
+   *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo
+   * var searchObject = $location.search();
+   * // => {foo: 'bar', baz: 'xoxo'}
+   *
+   * // set foo to 'yipee'
+   * $location.search('foo', 'yipee');
+   * // $location.search() => {foo: 'yipee', baz: 'xoxo'}
+   * ```
+   *
+   * @param {string|Object.<string>|Object.<Array.<string>>} search New search params - string or
+   * hash object.
+   *
+   * When called with a single argument the method acts as a setter, setting the `search` component
+   * of `$location` to the specified value.
+   *
+   * If the argument is a hash object containing an array of values, these values will be encoded
+   * as duplicate search parameters in the url.
+   *
+   * @param {(string|Number|Array<string>|boolean)=} paramValue If `search` is a string or number, then `paramValue`
+   * will override only a single search property.
+   *
+   * If `paramValue` is an array, it will override the property of the `search` component of
+   * `$location` specified via the first argument.
+   *
+   * If `paramValue` is `null`, the property specified via the first argument will be deleted.
+   *
+   * If `paramValue` is `true`, the property specified via the first argument will be added with no
+   * value nor trailing equal sign.
+   *
+   * @return {Object} If called with no arguments returns the parsed `search` object. If called with
+   * one or more arguments returns `$location` object itself.
+   */
+  search: function(search, paramValue) {
+    switch (arguments.length) {
+      case 0:
+        return this.$$search;
+      case 1:
+        if (isString(search) || isNumber(search)) {
+          search = search.toString();
+          this.$$search = parseKeyValue(search);
+        } else if (isObject(search)) {
+          search = copy(search, {});
+          // remove object undefined or null properties
+          forEach(search, function(value, key) {
+            if (value == null) delete search[key];
+          });
+
+          this.$$search = search;
+        } else {
+          throw $locationMinErr('isrcharg',
+              'The first argument of the `$location#search()` call must be a string or an object.');
+        }
+        break;
+      default:
+        if (isUndefined(paramValue) || paramValue === null) {
+          delete this.$$search[search];
+        } else {
+          this.$$search[search] = paramValue;
+        }
+    }
+
+    this.$$compose();
+    return this;
+  },
+
+  /**
+   * @ngdoc method
+   * @name $location#hash
+   *
+   * @description
+   * This method is getter / setter.
+   *
+   * Return hash fragment when called without any parameter.
+   *
+   * Change hash fragment when called with parameter and return `$location`.
+   *
+   *
+   * ```js
+   * // given url http://example.com/#/some/path?foo=bar&baz=xoxo#hashValue
+   * var hash = $location.hash();
+   * // => "hashValue"
+   * ```
+   *
+   * @param {(string|number)=} hash New hash fragment
+   * @return {string} hash
+   */
+  hash: locationGetterSetter('$$hash', function(hash) {
+    return hash !== null ? hash.toString() : '';
+  }),
+
+  /**
+   * @ngdoc method
+   * @name $location#replace
+   *
+   * @description
+   * If called, all changes to $location during current `$digest` will be replacing current history
+   * record, instead of adding new one.
+   */
+  replace: function() {
+    this.$$replace = true;
+    return this;
+  }
+};
+
+forEach([LocationHashbangInHtml5Url, LocationHashbangUrl, LocationHtml5Url], function(Location) {
+  Location.prototype = Object.create(locationPrototype);
+
+  /**
+   * @ngdoc method
+   * @name $location#state
+   *
+   * @description
+   * This method is getter / setter.
+   *
+   * Return the history state object when called without any parameter.
+   *
+   * Change the history state object when called with one parameter and return `$location`.
+   * The state object is later passed to `pushState` or `replaceState`.
+   *
+   * NOTE: This method is supported only in HTML5 mode and only in browsers supporting
+   * the HTML5 History API (i.e. methods `pushState` and `replaceState`). If you need to support
+   * older browsers (like IE9 or Android < 4.0), don't use this method.
+   *
+   * @param {object=} state State object for pushState or replaceState
+   * @return {object} state
+   */
+  Location.prototype.state = function(state) {
+    if (!arguments.length)
+      return this.$$state;
+
+    if (Location !== LocationHtml5Url || !this.$$html5) {
+      throw $locationMinErr('nostate', 'History API state support is available only ' +
+        'in HTML5 mode and only in browsers supporting HTML5 History API');
+    }
+    // The user might modify `stateObject` after invoking `$location.state(stateObject)`
+    // but we're changing the $$state reference to $browser.state() during the $digest
+    // so the modification window is narrow.
+    this.$$state = isUndefined(state) ? null : state;
+
+    return this;
+  };
+});
+
+
+function locationGetter(property) {
+  return function() {
+    return this[property];
+  };
+}
+
+
+function locationGetterSetter(property, preprocess) {
+  return function(value) {
+    if (isUndefined(value))
+      return this[property];
+
+    this[property] = preprocess(value);
+    this.$$compose();
+
+    return this;
+  };
+}
+
+
+/**
+ * @ngdoc service
+ * @name $location
+ *
+ * @requires $rootElement
+ *
+ * @description
+ * The $location service parses the URL in the browser address bar (based on the
+ * [window.location](https://developer.mozilla.org/en/window.location)) and makes the URL
+ * available to your application. Changes to the URL in the address bar are reflected into
+ * $location service and changes to $location are reflected into the browser address bar.
+ *
+ * **The $location service:**
+ *
+ * - Exposes the current URL in the browser address bar, so you can
+ *   - Watch and observe the URL.
+ *   - Change the URL.
+ * - Synchronizes the URL with the browser when the user
+ *   - Changes the address bar.
+ *   - Clicks the back or forward button (or clicks a History link).
+ *   - Clicks on a link.
+ * - Represents the URL object as a set of methods (protocol, host, port, path, search, hash).
+ *
+ * For more information see {@link guide/$location Developer Guide: Using $location}
+ */
+
+/**
+ * @ngdoc provider
+ * @name $locationProvider
+ * @description
+ * Use the `$locationProvider` to configure how the application deep linking paths are stored.
+ */
+function $LocationProvider() {
+  var hashPrefix = '',
+      html5Mode = {
+        enabled: false,
+        requireBase: true,
+        rewriteLinks: true
+      };
+
+  /**
+   * @ngdoc method
+   * @name $locationProvider#hashPrefix
+   * @description
+   * @param {string=} prefix Prefix for hash part (containing path and search)
+   * @returns {*} current value if used as getter or itself (chaining) if used as setter
+   */
+  this.hashPrefix = function(prefix) {
+    if (isDefined(prefix)) {
+      hashPrefix = prefix;
+      return this;
+    } else {
+      return hashPrefix;
+    }
+  };
+
+  /**
+   * @ngdoc method
+   * @name $locationProvider#html5Mode
+   * @description
+   * @param {(boolean|Object)=} mode If boolean, sets `html5Mode.enabled` to value.
+   *   If object, sets `enabled`, `requireBase` and `rewriteLinks` to respective values. Supported
+   *   properties:
+   *   - **enabled** – `{boolean}` – (default: false) If true, will rely on `history.pushState` to
+   *     change urls where supported. Will fall back to hash-prefixed paths in browsers that do not
+   *     support `pushState`.
+   *   - **requireBase** - `{boolean}` - (default: `true`) When html5Mode is enabled, specifies
+   *     whether or not a <base> tag is required to be present. If `enabled` and `requireBase` are
+   *     true, and a base tag is not present, an error will be thrown when `$location` is injected.
+   *     See the {@link guide/$location $location guide for more information}
+   *   - **rewriteLinks** - `{boolean}` - (default: `true`) When html5Mode is enabled,
+   *     enables/disables url rewriting for relative links.
+   *
+   * @returns {Object} html5Mode object if used as getter or itself (chaining) if used as setter
+   */
+  this.html5Mode = function(mode) {
+    if (isBoolean(mode)) {
+      html5Mode.enabled = mode;
+      return this;
+    } else if (isObject(mode)) {
+
+      if (isBoolean(mode.enabled)) {
+        html5Mode.enabled = mode.enabled;
+      }
+
+      if (isBoolean(mode.requireBase)) {
+        html5Mode.requireBase = mode.requireBase;
+      }
+
+      if (isBoolean(mode.rewriteLinks)) {
+        html5Mode.rewriteLinks = mode.rewriteLinks;
+      }
+
+      return this;
+    } else {
+      return html5Mode;
+    }
+  };
+
+  /**
+   * @ngdoc event
+   * @name $location#$locationChangeStart
+   * @eventType broadcast on root scope
+   * @description
+   * Broadcasted before a URL will change.
+   *
+   * This change can be prevented by calling
+   * `preventDefault` method of the event. See {@link ng.$rootScope.Scope#$on} for more
+   * details about event object. Upon successful change
+   * {@link ng.$location#$locationChangeSuccess $locationChangeSuccess} is fired.
+   *
+   * The `newState` and `oldState` parameters may be defined only in HTML5 mode and when
+   * the browser supports the HTML5 History API.
+   *
+   * @param {Object} angularEvent Synthetic event object.
+   * @param {string} newUrl New URL
+   * @param {string=} oldUrl URL that was before it was changed.
+   * @param {string=} newState New history state object
+   * @param {string=} oldState History state object that was before it was changed.
+   */
+
+  /**
+   * @ngdoc event
+   * @name $location#$locationChangeSuccess
+   * @eventType broadcast on root scope
+   * @description
+   * Broadcasted after a URL was changed.
+   *
+   * The `newState` and `oldState` parameters may be defined only in HTML5 mode and when
+   * the browser supports the HTML5 History API.
+   *
+   * @param {Object} angularEvent Synthetic event object.
+   * @param {string} newUrl New URL
+   * @param {string=} oldUrl URL that was before it was changed.
+   * @param {string=} newState New history state object
+   * @param {string=} oldState History state object that was before it was changed.
+   */
+
+  this.$get = ['$rootScope', '$browser', '$sniffer', '$rootElement', '$window',
+      function($rootScope, $browser, $sniffer, $rootElement, $window) {
+    var $location,
+        LocationMode,
+        baseHref = $browser.baseHref(), // if base[href] is undefined, it defaults to ''
+        initialUrl = $browser.url(),
+        appBase;
+
+    if (html5Mode.enabled) {
+      if (!baseHref && html5Mode.requireBase) {
+        throw $locationMinErr('nobase',
+          "$location in HTML5 mode requires a <base> tag to be present!");
+      }
+      appBase = serverBase(initialUrl) + (baseHref || '/');
+      LocationMode = $sniffer.history ? LocationHtml5Url : LocationHashbangInHtml5Url;
+    } else {
+      appBase = stripHash(initialUrl);
+      LocationMode = LocationHashbangUrl;
+    }
+    var appBaseNoFile = stripFile(appBase);
+
+    $location = new LocationMode(appBase, appBaseNoFile, '#' + hashPrefix);
+    $location.$$parseLinkUrl(initialUrl, initialUrl);
+
+    $location.$$state = $browser.state();
+
+    var IGNORE_URI_REGEXP = /^\s*(javascript|mailto):/i;
+
+    function setBrowserUrlWithFallback(url, replace, state) {
+      var oldUrl = $location.url();
+      var oldState = $location.$$state;
+      try {
+        $browser.url(url, replace, state);
+
+        // Make sure $location.state() returns referentially identical (not just deeply equal)
+        // state object; this makes possible quick checking if the state changed in the digest
+        // loop. Checking deep equality would be too expensive.
+        $location.$$state = $browser.state();
+      } catch (e) {
+        // Restore old values if pushState fails
+        $location.url(oldUrl);
+        $location.$$state = oldState;
+
+        throw e;
+      }
+    }
+
+    $rootElement.on('click', function(event) {
+      // TODO(vojta): rewrite link when opening in new tab/window (in legacy browser)
+      // currently we open nice url link and redirect then
+
+      if (!html5Mode.rewriteLinks || event.ctrlKey || event.metaKey || event.shiftKey || event.which == 2 || event.button == 2) return;
+
+      var elm = jqLite(event.target);
+
+      // traverse the DOM up to find first A tag
+      while (nodeName_(elm[0]) !== 'a') {
+        // ignore rewriting if no A tag (reached root element, or no parent - removed from document)
+        if (elm[0] === $rootElement[0] || !(elm = elm.parent())[0]) return;
+      }
+
+      var absHref = elm.prop('href');
+      // get the actual href attribute - see
+      // http://msdn.microsoft.com/en-us/library/ie/dd347148(v=vs.85).aspx
+      var relHref = elm.attr('href') || elm.attr('xlink:href');
+
+      if (isObject(absHref) && absHref.toString() === '[object SVGAnimatedString]') {
+        // SVGAnimatedString.animVal should be identical to SVGAnimatedString.baseVal, unless during
+        // an animation.
+        absHref = urlResolve(absHref.animVal).href;
+      }
+
+      // Ignore when url is started with javascript: or mailto:
+      if (IGNORE_URI_REGEXP.test(absHref)) return;
+
+      if (absHref && !elm.attr('target') && !event.isDefaultPrevented()) {
+        if ($location.$$parseLinkUrl(absHref, relHref)) {
+          // We do a preventDefault for all urls that are part of the angular application,
+          // in html5mode and also without, so that we are able to abort navigation without
+          // getting double entries in the location history.
+          event.preventDefault();
+          // update location manually
+          if ($location.absUrl() != $browser.url()) {
+            $rootScope.$apply();
+            // hack to work around FF6 bug 684208 when scenario runner clicks on links
+            $window.angular['ff-684208-preventDefault'] = true;
+          }
+        }
+      }
+    });
+
+
+    // rewrite hashbang url <> html5 url
+    if (trimEmptyHash($location.absUrl()) != trimEmptyHash(initialUrl)) {
+      $browser.url($location.absUrl(), true);
+    }
+
+    var initializing = true;
+
+    // update $location when $browser url changes
+    $browser.onUrlChange(function(newUrl, newState) {
+
+      if (isUndefined(beginsWith(appBaseNoFile, newUrl))) {
+        // If we are navigating outside of the app then force a reload
+        $window.location.href = newUrl;
+        return;
+      }
+
+      $rootScope.$evalAsync(function() {
+        var oldUrl = $location.absUrl();
+        var oldState = $location.$$state;
+        var defaultPrevented;
+
+        $location.$$parse(newUrl);
+        $location.$$state = newState;
+
+        defaultPrevented = $rootScope.$broadcast('$locationChangeStart', newUrl, oldUrl,
+            newState, oldState).defaultPrevented;
+
+        // if the location was changed by a `$locationChangeStart` handler then stop
+        // processing this location change
+        if ($location.absUrl() !== newUrl) return;
+
+        if (defaultPrevented) {
+          $location.$$parse(oldUrl);
+          $location.$$state = oldState;
+          setBrowserUrlWithFallback(oldUrl, false, oldState);
+        } else {
+          initializing = false;
+          afterLocationChange(oldUrl, oldState);
+        }
+      });
+      if (!$rootScope.$$phase) $rootScope.$digest();
+    });
+
+    // update browser
+    $rootScope.$watch(function $locationWatch() {
+      var oldUrl = trimEmptyHash($browser.url());
+      var newUrl = trimEmptyHash($location.absUrl());
+      var oldState = $browser.state();
+      var currentReplace = $location.$$replace;
+      var urlOrStateChanged = oldUrl !== newUrl ||
+        ($location.$$html5 && $sniffer.history && oldState !== $location.$$state);
+
+      if (initializing || urlOrStateChanged) {
+        initializing = false;
+
+        $rootScope.$evalAsync(function() {
+          var newUrl = $location.absUrl();
+          var defaultPrevented = $rootScope.$broadcast('$locationChangeStart', newUrl, oldUrl,
+              $location.$$state, oldState).defaultPrevented;
+
+          // if the location was changed by a `$locationChangeStart` handler then stop
+          // processing this location change
+          if ($location.absUrl() !== newUrl) return;
+
+          if (defaultPrevented) {
+            $location.$$parse(oldUrl);
+            $location.$$state = oldState;
+          } else {
+            if (urlOrStateChanged) {
+              setBrowserUrlWithFallback(newUrl, currentReplace,
+                                        oldState === $location.$$state ? null : $location.$$state);
+            }
+            afterLocationChange(oldUrl, oldState);
+          }
+        });
+      }
+
+      $location.$$replace = false;
+
+      // we don't need to return anything because $evalAsync will make the digest loop dirty when
+      // there is a change
+    });
+
+    return $location;
+
+    function afterLocationChange(oldUrl, oldState) {
+      $rootScope.$broadcast('$locationChangeSuccess', $location.absUrl(), oldUrl,
+        $location.$$state, oldState);
+    }
+}];
+}
+
+/**
+ * @ngdoc service
+ * @name $log
+ * @requires $window
+ *
+ * @description
+ * Simple service for logging. Default implementation safely writes the message
+ * into the browser's console (if present).
+ *
+ * The main purpose of this service is to simplify debugging and troubleshooting.
+ *
+ * The default is to log `debug` messages. You can use
+ * {@link ng.$logProvider ng.$logProvider#debugEnabled} to change this.
+ *
+ * @example
+   <example module="logExample">
+     <file name="script.js">
+       angular.module('logExample', [])
+         .controller('LogController', ['$scope', '$log', function($scope, $log) {
+           $scope.$log = $log;
+           $scope.message = 'Hello World!';
+         }]);
+     </file>
+     <file name="index.html">
+       <div ng-controller="LogController">
+         <p>Reload this page with open console, enter text and hit the log button...</p>
+         Message:
+         <input type="text" ng-model="message"/>
+         <button ng-click="$log.log(message)">log</button>
+         <button ng-click="$log.warn(message)">warn</button>
+         <button ng-click="$log.info(message)">info</button>
+         <button ng-click="$log.error(message)">error</button>
+         <button ng-click="$log.debug(message)">debug</button>
+       </div>
+     </file>
+   </example>
+ */
+
+/**
+ * @ngdoc provider
+ * @name $logProvider
+ * @description
+ * Use the `$logProvider` to configure how the application logs messages
+ */
+function $LogProvider() {
+  var debug = true,
+      self = this;
+
+  /**
+   * @ngdoc method
+   * @name $logProvider#debugEnabled
+   * @description
+   * @param {boolean=} flag enable or disable debug level messages
+   * @returns {*} current value if used as getter or itself (chaining) if used as setter
+   */
+  this.debugEnabled = function(flag) {
+    if (isDefined(flag)) {
+      debug = flag;
+    return this;
+    } else {
+      return debug;
+    }
+  };
+
+  this.$get = ['$window', function($window) {
+    return {
+      /**
+       * @ngdoc method
+       * @name $log#log
+       *
+       * @description
+       * Write a log message
+       */
+      log: consoleLog('log'),
+
+      /**
+       * @ngdoc method
+       * @name $log#info
+       *
+       * @description
+       * Write an information message
+       */
+      info: consoleLog('info'),
+
+      /**
+       * @ngdoc method
+       * @name $log#warn
+       *
+       * @description
+       * Write a warning message
+       */
+      warn: consoleLog('warn'),
+
+      /**
+       * @ngdoc method
+       * @name $log#error
+       *
+       * @description
+       * Write an error message
+       */
+      error: consoleLog('error'),
+
+      /**
+       * @ngdoc method
+       * @name $log#debug
+       *
+       * @description
+       * Write a debug message
+       */
+      debug: (function() {
+        var fn = consoleLog('debug');
+
+        return function() {
+          if (debug) {
+            fn.apply(self, arguments);
+          }
+        };
+      }())
+    };
+
+    function formatError(arg) {
+      if (arg instanceof Error) {
+        if (arg.stack) {
+          arg = (arg.message && arg.stack.indexOf(arg.message) === -1)
+              ? 'Error: ' + arg.message + '\n' + arg.stack
+              : arg.stack;
+        } else if (arg.sourceURL) {
+          arg = arg.message + '\n' + arg.sourceURL + ':' + arg.line;
+        }
+      }
+      return arg;
+    }
+
+    function consoleLog(type) {
+      var console = $window.console || {},
+          logFn = console[type] || console.log || noop,
+          hasApply = false;
+
+      // Note: reading logFn.apply throws an error in IE11 in IE8 document mode.
+      // The reason behind this is that console.log has type "object" in IE8...
+      try {
+        hasApply = !!logFn.apply;
+      } catch (e) {}
+
+      if (hasApply) {
+        return function() {
+          var args = [];
+          forEach(arguments, function(arg) {
+            args.push(formatError(arg));
+          });
+          return logFn.apply(console, args);
+        };
+      }
+
+      // we are IE which either doesn't have window.console => this is noop and we do nothing,
+      // or we are IE where console.log doesn't have apply so we log at least first 2 args
+      return function(arg1, arg2) {
+        logFn(arg1, arg2 == null ? '' : arg2);
+      };
+    }
+  }];
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ *     Any commits to this file should be reviewed with security in mind.  *
+ *   Changes to this file can potentially create security vulnerabilities. *
+ *          An approval from 2 Core members with history of modifying      *
+ *                         this file is required.                          *
+ *                                                                         *
+ *  Does the change somehow allow for arbitrary javascript to be executed? *
+ *    Or allows for someone to change the prototype of built-in objects?   *
+ *     Or gives undesired access to variables likes document or window?    *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+var $parseMinErr = minErr('$parse');
+
+// Sandboxing Angular Expressions
+// ------------------------------
+// Angular expressions are generally considered safe because these expressions only have direct
+// access to `$scope` and locals. However, one can obtain the ability to execute arbitrary JS code by
+// obtaining a reference to native JS functions such as the Function constructor.
+//
+// As an example, consider the following Angular expression:
+//
+//   {}.toString.constructor('alert("evil JS code")')
+//
+// This sandboxing technique is not perfect and doesn't aim to be. The goal is to prevent exploits
+// against the expression language, but not to prevent exploits that were enabled by exposing
+// sensitive JavaScript or browser APIs on Scope. Exposing such objects on a Scope is never a good
+// practice and therefore we are not even trying to protect against interaction with an object
+// explicitly exposed in this way.
+//
+// In general, it is not possible to access a Window object from an angular expression unless a
+// window or some DOM object that has a reference to window is published onto a Scope.
+// Similarly we prevent invocations of function known to be dangerous, as well as assignments to
+// native objects.
+//
+// See https://docs.angularjs.org/guide/security
+
+
+function ensureSafeMemberName(name, fullExpression) {
+  if (name === "__defineGetter__" || name === "__defineSetter__"
+      || name === "__lookupGetter__" || name === "__lookupSetter__"
+      || name === "__proto__") {
+    throw $parseMinErr('isecfld',
+        'Attempting to access a disallowed field in Angular expressions! '
+        + 'Expression: {0}', fullExpression);
+  }
+  return name;
+}
+
+function getStringValue(name, fullExpression) {
+  // From the JavaScript docs:
+  // Property names must be strings. This means that non-string objects cannot be used
+  // as keys in an object. Any non-string object, including a number, is typecasted
+  // into a string via the toString method.
+  //
+  // So, to ensure that we are checking the same `name` that JavaScript would use,
+  // we cast it to a string, if possible.
+  // Doing `name + ''` can cause a repl error if the result to `toString` is not a string,
+  // this is, this will handle objects that misbehave.
+  name = name + '';
+  if (!isString(name)) {
+    throw $parseMinErr('iseccst',
+        'Cannot convert object to primitive value! '
+        + 'Expression: {0}', fullExpression);
+  }
+  return name;
+}
+
+function ensureSafeObject(obj, fullExpression) {
+  // nifty check if obj is Function that is fast and works across iframes and other contexts
+  if (obj) {
+    if (obj.constructor === obj) {
+      throw $parseMinErr('isecfn',
+          'Referencing Function in Angular expressions is disallowed! Expression: {0}',
+          fullExpression);
+    } else if (// isWindow(obj)
+        obj.window === obj) {
+      throw $parseMinErr('isecwindow',
+          'Referencing the Window in Angular expressions is disallowed! Expression: {0}',
+          fullExpression);
+    } else if (// isElement(obj)
+        obj.children && (obj.nodeName || (obj.prop && obj.attr && obj.find))) {
+      throw $parseMinErr('isecdom',
+          'Referencing DOM nodes in Angular expressions is disallowed! Expression: {0}',
+          fullExpression);
+    } else if (// block Object so that we can't get hold of dangerous Object.* methods
+        obj === Object) {
+      throw $parseMinErr('isecobj',
+          'Referencing Object in Angular expressions is disallowed! Expression: {0}',
+          fullExpression);
+    }
+  }
+  return obj;
+}
+
+var CALL = Function.prototype.call;
+var APPLY = Function.prototype.apply;
+var BIND = Function.prototype.bind;
+
+function ensureSafeFunction(obj, fullExpression) {
+  if (obj) {
+    if (obj.constructor === obj) {
+      throw $parseMinErr('isecfn',
+        'Referencing Function in Angular expressions is disallowed! Expression: {0}',
+        fullExpression);
+    } else if (obj === CALL || obj === APPLY || obj === BIND) {
+      throw $parseMinErr('isecff',
+        'Referencing call, apply or bind in Angular expressions is disallowed! Expression: {0}',
+        fullExpression);
+    }
+  }
+}
+
+//Keyword constants
+var CONSTANTS = createMap();
+forEach({
+  'null': function() { return null; },
+  'true': function() { return true; },
+  'false': function() { return false; },
+  'undefined': function() {}
+}, function(constantGetter, name) {
+  constantGetter.constant = constantGetter.literal = constantGetter.sharedGetter = true;
+  CONSTANTS[name] = constantGetter;
+});
+
+//Not quite a constant, but can be lex/parsed the same
+CONSTANTS['this'] = function(self) { return self; };
+CONSTANTS['this'].sharedGetter = true;
+
+
+//Operators - will be wrapped by binaryFn/unaryFn/assignment/filter
+var OPERATORS = extend(createMap(), {
+    '+':function(self, locals, a, b) {
+      a=a(self, locals); b=b(self, locals);
+      if (isDefined(a)) {
+        if (isDefined(b)) {
+          return a + b;
+        }
+        return a;
+      }
+      return isDefined(b) ? b : undefined;},
+    '-':function(self, locals, a, b) {
+          a=a(self, locals); b=b(self, locals);
+          return (isDefined(a) ? a : 0) - (isDefined(b) ? b : 0);
+        },
+    '*':function(self, locals, a, b) {return a(self, locals) * b(self, locals);},
+    '/':function(self, locals, a, b) {return a(self, locals) / b(self, locals);},
+    '%':function(self, locals, a, b) {return a(self, locals) % b(self, locals);},
+    '===':function(self, locals, a, b) {return a(self, locals) === b(self, locals);},
+    '!==':function(self, locals, a, b) {return a(self, locals) !== b(self, locals);},
+    '==':function(self, locals, a, b) {return a(self, locals) == b(self, locals);},
+    '!=':function(self, locals, a, b) {return a(self, locals) != b(self, locals);},
+    '<':function(self, locals, a, b) {return a(self, locals) < b(self, locals);},
+    '>':function(self, locals, a, b) {return a(self, locals) > b(self, locals);},
+    '<=':function(self, locals, a, b) {return a(self, locals) <= b(self, locals);},
+    '>=':function(self, locals, a, b) {return a(self, locals) >= b(self, locals);},
+    '&&':function(self, locals, a, b) {return a(self, locals) && b(self, locals);},
+    '||':function(self, locals, a, b) {return a(self, locals) || b(self, locals);},
+    '!':function(self, locals, a) {return !a(self, locals);},
+
+    //Tokenized as operators but parsed as assignment/filters
+    '=':true,
+    '|':true
+});
+var ESCAPE = {"n":"\n", "f":"\f", "r":"\r", "t":"\t", "v":"\v", "'":"'", '"':'"'};
+
+
+/////////////////////////////////////////
+
+
+/**
+ * @constructor
+ */
+var Lexer = function(options) {
+  this.options = options;
+};
+
+Lexer.prototype = {
+  constructor: Lexer,
+
+  lex: function(text) {
+    this.text = text;
+    this.index = 0;
+    this.tokens = [];
+
+    while (this.index < this.text.length) {
+      var ch = this.text.charAt(this.index);
+      if (ch === '"' || ch === "'") {
+        this.readString(ch);
+      } else if (this.isNumber(ch) || ch === '.' && this.isNumber(this.peek())) {
+        this.readNumber();
+      } else if (this.isIdent(ch)) {
+        this.readIdent();
+      } else if (this.is(ch, '(){}[].,;:?')) {
+        this.tokens.push({index: this.index, text: ch});
+        this.index++;
+      } else if (this.isWhitespace(ch)) {
+        this.index++;
+      } else {
+        var ch2 = ch + this.peek();
+        var ch3 = ch2 + this.peek(2);
+        var op1 = OPERATORS[ch];
+        var op2 = OPERATORS[ch2];
+        var op3 = OPERATORS[ch3];
+        if (op1 || op2 || op3) {
+          var token = op3 ? ch3 : (op2 ? ch2 : ch);
+          this.tokens.push({index: this.index, text: token, operator: true});
+          this.index += token.length;
+        } else {
+          this.throwError('Unexpected next character ', this.index, this.index + 1);
+        }
+      }
+    }
+    return this.tokens;
+  },
+
+  is: function(ch, chars) {
+    return chars.indexOf(ch) !== -1;
+  },
+
+  peek: function(i) {
+    var num = i || 1;
+    return (this.index + num < this.text.length) ? this.text.charAt(this.index + num) : false;
+  },
+
+  isNumber: function(ch) {
+    return ('0' <= ch && ch <= '9') && typeof ch === "string";
+  },
+
+  isWhitespace: function(ch) {
+    // IE treats non-breaking space as \u00A0
+    return (ch === ' ' || ch === '\r' || ch === '\t' ||
+            ch === '\n' || ch === '\v' || ch === '\u00A0');
+  },
+
+  isIdent: function(ch) {
+    return ('a' <= ch && ch <= 'z' ||
+            'A' <= ch && ch <= 'Z' ||
+            '_' === ch || ch === '$');
+  },
+
+  isExpOperator: function(ch) {
+    return (ch === '-' || ch === '+' || this.isNumber(ch));
+  },
+
+  throwError: function(error, start, end) {
+    end = end || this.index;
+    var colStr = (isDefined(start)
+            ? 's ' + start +  '-' + this.index + ' [' + this.text.substring(start, end) + ']'
+            : ' ' + end);
+    throw $parseMinErr('lexerr', 'Lexer Error: {0} at column{1} in expression [{2}].',
+        error, colStr, this.text);
+  },
+
+  readNumber: function() {
+    var number = '';
+    var start = this.index;
+    while (this.index < this.text.length) {
+      var ch = lowercase(this.text.charAt(this.index));
+      if (ch == '.' || this.isNumber(ch)) {
+        number += ch;
+      } else {
+        var peekCh = this.peek();
+        if (ch == 'e' && this.isExpOperator(peekCh)) {
+          number += ch;
+        } else if (this.isExpOperator(ch) &&
+            peekCh && this.isNumber(peekCh) &&
+            number.charAt(number.length - 1) == 'e') {
+          number += ch;
+        } else if (this.isExpOperator(ch) &&
+            (!peekCh || !this.isNumber(peekCh)) &&
+            number.charAt(number.length - 1) == 'e') {
+          this.throwError('Invalid exponent');
+        } else {
+          break;
+        }
+      }
+      this.index++;
+    }
+    this.tokens.push({
+      index: start,
+      text: number,
+      constant: true,
+      value: Number(number)
+    });
+  },
+
+  readIdent: function() {
+    var start = this.index;
+    while (this.index < this.text.length) {
+      var ch = this.text.charAt(this.index);
+      if (!(this.isIdent(ch) || this.isNumber(ch))) {
+        break;
+      }
+      this.index++;
+    }
+    this.tokens.push({
+      index: start,
+      text: this.text.slice(start, this.index),
+      identifier: true
+    });
+  },
+
+  readString: function(quote) {
+    var start = this.index;
+    this.index++;
+    var string = '';
+    var rawString = quote;
+    var escape = false;
+    while (this.index < this.text.length) {
+      var ch = this.text.charAt(this.index);
+      rawString += ch;
+      if (escape) {
+        if (ch === 'u') {
+          var hex = this.text.substring(this.index + 1, this.index + 5);
+          if (!hex.match(/[\da-f]{4}/i))
+            this.throwError('Invalid unicode escape [\\u' + hex + ']');
+          this.index += 4;
+          string += String.fromCharCode(parseInt(hex, 16));
+        } else {
+          var rep = ESCAPE[ch];
+          string = string + (rep || ch);
+        }
+        escape = false;
+      } else if (ch === '\\') {
+        escape = true;
+      } else if (ch === quote) {
+        this.index++;
+        this.tokens.push({
+          index: start,
+          text: rawString,
+          constant: true,
+          value: string
+        });
+        return;
+      } else {
+        string += ch;
+      }
+      this.index++;
+    }
+    this.throwError('Unterminated quote', start);
+  }
+};
+
+
+function isConstant(exp) {
+  return exp.constant;
+}
+
+/**
+ * @constructor
+ */
+var Parser = function(lexer, $filter, options) {
+  this.lexer = lexer;
+  this.$filter = $filter;
+  this.options = options;
+};
+
+Parser.ZERO = extend(function() {
+  return 0;
+}, {
+  sharedGetter: true,
+  constant: true
+});
+
+Parser.prototype = {
+  constructor: Parser,
+
+  parse: function(text) {
+    this.text = text;
+    this.tokens = this.lexer.lex(text);
+
+    var value = this.statements();
+
+    if (this.tokens.length !== 0) {
+      this.throwError('is an unexpected token', this.tokens[0]);
+    }
+
+    value.literal = !!value.literal;
+    value.constant = !!value.constant;
+
+    return value;
+  },
+
+  primary: function() {
+    var primary;
+    if (this.expect('(')) {
+      primary = this.filterChain();
+      this.consume(')');
+    } else if (this.expect('[')) {
+      primary = this.arrayDeclaration();
+    } else if (this.expect('{')) {
+      primary = this.object();
+    } else if (this.peek().identifier && this.peek().text in CONSTANTS) {
+      primary = CONSTANTS[this.consume().text];
+    } else if (this.peek().identifier) {
+      primary = this.identifier();
+    } else if (this.peek().constant) {
+      primary = this.constant();
+    } else {
+      this.throwError('not a primary expression', this.peek());
+    }
+
+    var next, context;
+    while ((next = this.expect('(', '[', '.'))) {
+      if (next.text === '(') {
+        primary = this.functionCall(primary, context);
+        context = null;
+      } else if (next.text === '[') {
+        context = primary;
+        primary = this.objectIndex(primary);
+      } else if (next.text === '.') {
+        context = primary;
+        primary = this.fieldAccess(primary);
+      } else {
+        this.throwError('IMPOSSIBLE');
+      }
+    }
+    return primary;
+  },
+
+  throwError: function(msg, token) {
+    throw $parseMinErr('syntax',
+        'Syntax Error: Token \'{0}\' {1} at column {2} of the expression [{3}] starting at [{4}].',
+          token.text, msg, (token.index + 1), this.text, this.text.substring(token.index));
+  },
+
+  peekToken: function() {
+    if (this.tokens.length === 0)
+      throw $parseMinErr('ueoe', 'Unexpected end of expression: {0}', this.text);
+    return this.tokens[0];
+  },
+
+  peek: function(e1, e2, e3, e4) {
+    return this.peekAhead(0, e1, e2, e3, e4);
+  },
+  peekAhead: function(i, e1, e2, e3, e4) {
+    if (this.tokens.length > i) {
+      var token = this.tokens[i];
+      var t = token.text;
+      if (t === e1 || t === e2 || t === e3 || t === e4 ||
+          (!e1 && !e2 && !e3 && !e4)) {
+        return token;
+      }
+    }
+    return false;
+  },
+
+  expect: function(e1, e2, e3, e4) {
+    var token = this.peek(e1, e2, e3, e4);
+    if (token) {
+      this.tokens.shift();
+      return token;
+    }
+    return false;
+  },
+
+  consume: function(e1) {
+    if (this.tokens.length === 0) {
+      throw $parseMinErr('ueoe', 'Unexpected end of expression: {0}', this.text);
+    }
+
+    var token = this.expect(e1);
+    if (!token) {
+      this.throwError('is unexpected, expecting [' + e1 + ']', this.peek());
+    }
+    return token;
+  },
+
+  unaryFn: function(op, right) {
+    var fn = OPERATORS[op];
+    return extend(function $parseUnaryFn(self, locals) {
+      return fn(self, locals, right);
+    }, {
+      constant:right.constant,
+      inputs: [right]
+    });
+  },
+
+  binaryFn: function(left, op, right, isBranching) {
+    var fn = OPERATORS[op];
+    return extend(function $parseBinaryFn(self, locals) {
+      return fn(self, locals, left, right);
+    }, {
+      constant: left.constant && right.constant,
+      inputs: !isBranching && [left, right]
+    });
+  },
+
+  identifier: function() {
+    var id = this.consume().text;
+
+    //Continue reading each `.identifier` unless it is a method invocation
+    while (this.peek('.') && this.peekAhead(1).identifier && !this.peekAhead(2, '(')) {
+      id += this.consume().text + this.consume().text;
+    }
+
+    return getterFn(id, this.options, this.text);
+  },
+
+  constant: function() {
+    var value = this.consume().value;
+
+    return extend(function $parseConstant() {
+      return value;
+    }, {
+      constant: true,
+      literal: true
+    });
+  },
+
+  statements: function() {
+    var statements = [];
+    while (true) {
+      if (this.tokens.length > 0 && !this.peek('}', ')', ';', ']'))
+        statements.push(this.filterChain());
+      if (!this.expect(';')) {
+        // optimize for the common case where there is only one statement.
+        // TODO(size): maybe we should not support multiple statements?
+        return (statements.length === 1)
+            ? statements[0]
+            : function $parseStatements(self, locals) {
+                var value;
+                for (var i = 0, ii = statements.length; i < ii; i++) {
+                  value = statements[i](self, locals);
+                }
+                return value;
+              };
+      }
+    }
+  },
+
+  filterChain: function() {
+    var left = this.expression();
+    var token;
+    while ((token = this.expect('|'))) {
+      left = this.filter(left);
+    }
+    return left;
+  },
+
+  filter: function(inputFn) {
+    var fn = this.$filter(this.consume().text);
+    var argsFn;
+    var args;
+
+    if (this.peek(':')) {
+      argsFn = [];
+      args = []; // we can safely reuse the array
+      while (this.expect(':')) {
+        argsFn.push(this.expression());
+      }
+    }
+
+    var inputs = [inputFn].concat(argsFn || []);
+
+    return extend(function $parseFilter(self, locals) {
+      var input = inputFn(self, locals);
+      if (args) {
+        args[0] = input;
+
+        var i = argsFn.length;
+        while (i--) {
+          args[i + 1] = argsFn[i](self, locals);
+        }
+
+        return fn.apply(undefined, args);
+      }
+
+      return fn(input);
+    }, {
+      constant: !fn.$stateful && inputs.every(isConstant),
+      inputs: !fn.$stateful && inputs
+    });
+  },
+
+  expression: function() {
+    return this.assignment();
+  },
+
+  assignment: function() {
+    var left = this.ternary();
+    var right;
+    var token;
+    if ((token = this.expect('='))) {
+      if (!left.assign) {
+        this.throwError('implies assignment but [' +
+            this.text.substring(0, token.index) + '] can not be assigned to', token);
+      }
+      right = this.ternary();
+      return extend(function $parseAssignment(scope, locals) {
+        return left.assign(scope, right(scope, locals), locals);
+      }, {
+        inputs: [left, right]
+      });
+    }
+    return left;
+  },
+
+  ternary: function() {
+    var left = this.logicalOR();
+    var middle;
+    var token;
+    if ((token = this.expect('?'))) {
+      middle = this.assignment();
+      if (this.consume(':')) {
+        var right = this.assignment();
+
+        return extend(function $parseTernary(self, locals) {
+          return left(self, locals) ? middle(self, locals) : right(self, locals);
+        }, {
+          constant: left.constant && middle.constant && right.constant
+        });
+      }
+    }
+
+    return left;
+  },
+
+  logicalOR: function() {
+    var left = this.logicalAND();
+    var token;
+    while ((token = this.expect('||'))) {
+      left = this.binaryFn(left, token.text, this.logicalAND(), true);
+    }
+    return left;
+  },
+
+  logicalAND: function() {
+    var left = this.equality();
+    var token;
+    while ((token = this.expect('&&'))) {
+      left = this.binaryFn(left, token.text, this.equality(), true);
+    }
+    return left;
+  },
+
+  equality: function() {
+    var left = this.relational();
+    var token;
+    while ((token = this.expect('==','!=','===','!=='))) {
+      left = this.binaryFn(left, token.text, this.relational());
+    }
+    return left;
+  },
+
+  relational: function() {
+    var left = this.additive();
+    var token;
+    while ((token = this.expect('<', '>', '<=', '>='))) {
+      left = this.binaryFn(left, token.text, this.additive());
+    }
+    return left;
+  },
+
+  additive: function() {
+    var left = this.multiplicative();
+    var token;
+    while ((token = this.expect('+','-'))) {
+      left = this.binaryFn(left, token.text, this.multiplicative());
+    }
+    return left;
+  },
+
+  multiplicative: function() {
+    var left = this.unary();
+    var token;
+    while ((token = this.expect('*','/','%'))) {
+      left = this.binaryFn(left, token.text, this.unary());
+    }
+    return left;
+  },
+
+  unary: function() {
+    var token;
+    if (this.expect('+')) {
+      return this.primary();
+    } else if ((token = this.expect('-'))) {
+      return this.binaryFn(Parser.ZERO, token.text, this.unary());
+    } else if ((token = this.expect('!'))) {
+      return this.unaryFn(token.text, this.unary());
+    } else {
+      return this.primary();
+    }
+  },
+
+  fieldAccess: function(object) {
+    var getter = this.identifier();
+
+    return extend(function $parseFieldAccess(scope, locals, self) {
+      var o = self || object(scope, locals);
+      return (o == null) ? undefined : getter(o);
+    }, {
+      assign: function(scope, value, locals) {
+        var o = object(scope, locals);
+        if (!o) object.assign(scope, o = {}, locals);
+        return getter.assign(o, value);
+      }
+    });
+  },
+
+  objectIndex: function(obj) {
+    var expression = this.text;
+
+    var indexFn = this.expression();
+    this.consume(']');
+
+    return extend(function $parseObjectIndex(self, locals) {
+      var o = obj(self, locals),
+          i = getStringValue(indexFn(self, locals), expression),
+          v;
+
+      ensureSafeMemberName(i, expression);
+      if (!o) return undefined;
+      v = ensureSafeObject(o[i], expression);
+      return v;
+    }, {
+      assign: function(self, value, locals) {
+        var key = ensureSafeMemberName(getStringValue(indexFn(self, locals), expression), expression);
+        // prevent overwriting of Function.constructor which would break ensureSafeObject check
+        var o = ensureSafeObject(obj(self, locals), expression);
+        if (!o) obj.assign(self, o = {}, locals);
+        return o[key] = value;
+      }
+    });
+  },
+
+  functionCall: function(fnGetter, contextGetter) {
+    var argsFn = [];
+    if (this.peekToken().text !== ')') {
+      do {
+        argsFn.push(this.expression());
+      } while (this.expect(','));
+    }
+    this.consume(')');
+
+    var expressionText = this.text;
+    // we can safely reuse the array across invocations
+    var args = argsFn.length ? [] : null;
+
+    return function $parseFunctionCall(scope, locals) {
+      var context = contextGetter ? contextGetter(scope, locals) : isDefined(contextGetter) ? undefined : scope;
+      var fn = fnGetter(scope, locals, context) || noop;
+
+      if (args) {
+        var i = argsFn.length;
+        while (i--) {
+          args[i] = ensureSafeObject(argsFn[i](scope, locals), expressionText);
+        }
+      }
+
+      ensureSafeObject(context, expressionText);
+      ensureSafeFunction(fn, expressionText);
+
+      // IE doesn't have apply for some native functions
+      var v = fn.apply
+            ? fn.apply(context, args)
+            : fn(args[0], args[1], args[2], args[3], args[4]);
+
+      if (args) {
+        // Free-up the memory (arguments of the last function call).
+        args.length = 0;
+      }
+
+      return ensureSafeObject(v, expressionText);
+      };
+  },
+
+  // This is used with json array declaration
+  arrayDeclaration: function() {
+    var elementFns = [];
+    if (this.peekToken().text !== ']') {
+      do {
+        if (this.peek(']')) {
+          // Support trailing commas per ES5.1.
+          break;
+        }
+        elementFns.push(this.expression());
+      } while (this.expect(','));
+    }
+    this.consume(']');
+
+    return extend(function $parseArrayLiteral(self, locals) {
+      var array = [];
+      for (var i = 0, ii = elementFns.length; i < ii; i++) {
+        array.push(elementFns[i](self, locals));
+      }
+      return array;
+    }, {
+      literal: true,
+      constant: elementFns.every(isConstant),
+      inputs: elementFns
+    });
+  },
+
+  object: function() {
+    var keys = [], valueFns = [];
+    if (this.peekToken().text !== '}') {
+      do {
+        if (this.peek('}')) {
+          // Support trailing commas per ES5.1.
+          break;
+        }
+        var token = this.consume();
+        if (token.constant) {
+          keys.push(token.value);
+        } else if (token.identifier) {
+          keys.push(token.text);
+        } else {
+          this.throwError("invalid key", token);
+        }
+        this.consume(':');
+        valueFns.push(this.expression());
+      } while (this.expect(','));
+    }
+    this.consume('}');
+
+    return extend(function $parseObjectLiteral(self, locals) {
+      var object = {};
+      for (var i = 0, ii = valueFns.length; i < ii; i++) {
+        object[keys[i]] = valueFns[i](self, locals);
+      }
+      return object;
+    }, {
+      literal: true,
+      constant: valueFns.every(isConstant),
+      inputs: valueFns
+    });
+  }
+};
+
+
+//////////////////////////////////////////////////
+// Parser helper functions
+//////////////////////////////////////////////////
+
+function setter(obj, locals, path, setValue, fullExp) {
+  ensureSafeObject(obj, fullExp);
+  ensureSafeObject(locals, fullExp);
+
+  var element = path.split('.'), key;
+  for (var i = 0; element.length > 1; i++) {
+    key = ensureSafeMemberName(element.shift(), fullExp);
+    var propertyObj = (i === 0 && locals && locals[key]) || obj[key];
+    if (!propertyObj) {
+      propertyObj = {};
+      obj[key] = propertyObj;
+    }
+    obj = ensureSafeObject(propertyObj, fullExp);
+  }
+  key = ensureSafeMemberName(element.shift(), fullExp);
+  ensureSafeObject(obj[key], fullExp);
+  obj[key] = setValue;
+  return setValue;
+}
+
+var getterFnCacheDefault = createMap();
+var getterFnCacheExpensive = createMap();
+
+function isPossiblyDangerousMemberName(name) {
+  return name == 'constructor';
+}
+
+/**
+ * Implementation of the "Black Hole" variant from:
+ * - http://jsperf.com/angularjs-parse-getter/4
+ * - http://jsperf.com/path-evaluation-simplified/7
+ */
+function cspSafeGetterFn(key0, key1, key2, key3, key4, fullExp, expensiveChecks) {
+  ensureSafeMemberName(key0, fullExp);
+  ensureSafeMemberName(key1, fullExp);
+  ensureSafeMemberName(key2, fullExp);
+  ensureSafeMemberName(key3, fullExp);
+  ensureSafeMemberName(key4, fullExp);
+  var eso = function(o) {
+    return ensureSafeObject(o, fullExp);
+  };
+  var eso0 = (expensiveChecks || isPossiblyDangerousMemberName(key0)) ? eso : identity;
+  var eso1 = (expensiveChecks || isPossiblyDangerousMemberName(key1)) ? eso : identity;
+  var eso2 = (expensiveChecks || isPossiblyDangerousMemberName(key2)) ? eso : identity;
+  var eso3 = (expensiveChecks || isPossiblyDangerousMemberName(key3)) ? eso : identity;
+  var eso4 = (expensiveChecks || isPossiblyDangerousMemberName(key4)) ? eso : identity;
+
+  return function cspSafeGetter(scope, locals) {
+    var pathVal = (locals && locals.hasOwnProperty(key0)) ? locals : scope;
+
+    if (pathVal == null) return pathVal;
+    pathVal = eso0(pathVal[key0]);
+
+    if (!key1) return pathVal;
+    if (pathVal == null) return undefined;
+    pathVal = eso1(pathVal[key1]);
+
+    if (!key2) return pathVal;
+    if (pathVal == null) return undefined;
+    pathVal = eso2(pathVal[key2]);
+
+    if (!key3) return pathVal;
+    if (pathVal == null) return undefined;
+    pathVal = eso3(pathVal[key3]);
+
+    if (!key4) return pathVal;
+    if (pathVal == null) return undefined;
+    pathVal = eso4(pathVal[key4]);
+
+    return pathVal;
+  };
+}
+
+function getterFnWithEnsureSafeObject(fn, fullExpression) {
+  return function(s, l) {
+    return fn(s, l, ensureSafeObject, fullExpression);
+  };
+}
+
+function getterFn(path, options, fullExp) {
+  var expensiveChecks = options.expensiveChecks;
+  var getterFnCache = (expensiveChecks ? getterFnCacheExpensive : getterFnCacheDefault);
+  var fn = getterFnCache[path];
+  if (fn) return fn;
+
+
+  var pathKeys = path.split('.'),
+      pathKeysLength = pathKeys.length;
+
+  // http://jsperf.com/angularjs-parse-getter/6
+  if (options.csp) {
+    if (pathKeysLength < 6) {
+      fn = cspSafeGetterFn(pathKeys[0], pathKeys[1], pathKeys[2], pathKeys[3], pathKeys[4], fullExp, expensiveChecks);
+    } else {
+      fn = function cspSafeGetter(scope, locals) {
+        var i = 0, val;
+        do {
+          val = cspSafeGetterFn(pathKeys[i++], pathKeys[i++], pathKeys[i++], pathKeys[i++],
+                                pathKeys[i++], fullExp, expensiveChecks)(scope, locals);
+
+          locals = undefined; // clear after first iteration
+          scope = val;
+        } while (i < pathKeysLength);
+        return val;
+      };
+    }
+  } else {
+    var code = '';
+    if (expensiveChecks) {
+      code += 's = eso(s, fe);\nl = eso(l, fe);\n';
+    }
+    var needsEnsureSafeObject = expensiveChecks;
+    forEach(pathKeys, function(key, index) {
+      ensureSafeMemberName(key, fullExp);
+      var lookupJs = (index
+                      // we simply dereference 's' on any .dot notation
+                      ? 's'
+                      // but if we are first then we check locals first, and if so read it first
+                      : '((l&&l.hasOwnProperty("' + key + '"))?l:s)') + '.' + key;
+      if (expensiveChecks || isPossiblyDangerousMemberName(key)) {
+        lookupJs = 'eso(' + lookupJs + ', fe)';
+        needsEnsureSafeObject = true;
+      }
+      code += 'if(s == null) return undefined;\n' +
+              's=' + lookupJs + ';\n';
+    });
+    code += 'return s;';
+
+    /* jshint -W054 */
+    var evaledFnGetter = new Function('s', 'l', 'eso', 'fe', code); // s=scope, l=locals, eso=ensureSafeObject
+    /* jshint +W054 */
+    evaledFnGetter.toString = valueFn(code);
+    if (needsEnsureSafeObject) {
+      evaledFnGetter = getterFnWithEnsureSafeObject(evaledFnGetter, fullExp);
+    }
+    fn = evaledFnGetter;
+  }
+
+  fn.sharedGetter = true;
+  fn.assign = function(self, value, locals) {
+    return setter(self, locals, path, value, path);
+  };
+  getterFnCache[path] = fn;
+  return fn;
+}
+
+var objectValueOf = Object.prototype.valueOf;
+
+function getValueOf(value) {
+  return isFunction(value.valueOf) ? value.valueOf() : objectValueOf.call(value);
+}
+
+///////////////////////////////////
+
+/**
+ * @ngdoc service
+ * @name $parse
+ * @kind function
+ *
+ * @description
+ *
+ * Converts Angular {@link guide/expression expression} into a function.
+ *
+ * ```js
+ *   var getter = $parse('user.name');
+ *   var setter = getter.assign;
+ *   var context = {user:{name:'angular'}};
+ *   var locals = {user:{name:'local'}};
+ *
+ *   expect(getter(context)).toEqual('angular');
+ *   setter(context, 'newValue');
+ *   expect(context.user.name).toEqual('newValue');
+ *   expect(getter(context, locals)).toEqual('local');
+ * ```
+ *
+ *
+ * @param {string} expression String expression to compile.
+ * @returns {function(context, locals)} a function which represents the compiled expression:
+ *
+ *    * `context` – `{object}` – an object against which any expressions embedded in the strings
+ *      are evaluated against (typically a scope object).
+ *    * `locals` – `{object=}` – local variables context object, useful for overriding values in
+ *      `context`.
+ *
+ *    The returned function also has the following properties:
+ *      * `literal` – `{boolean}` – whether the expression's top-level node is a JavaScript
+ *        literal.
+ *      * `constant` – `{boolean}` – whether the expression is made entirely of JavaScript
+ *        constant literals.
+ *      * `assign` – `{?function(context, value)}` – if the expression is assignable, this will be
+ *        set to a function to change its value on the given context.
+ *
+ */
+
+
+/**
+ * @ngdoc provider
+ * @name $parseProvider
+ *
+ * @description
+ * `$parseProvider` can be used for configuring the default behavior of the {@link ng.$parse $parse}
+ *  service.
+ */
+function $ParseProvider() {
+  var cacheDefault = createMap();
+  var cacheExpensive = createMap();
+
+
+
+  this.$get = ['$filter', '$sniffer', function($filter, $sniffer) {
+    var $parseOptions = {
+          csp: $sniffer.csp,
+          expensiveChecks: false
+        },
+        $parseOptionsExpensive = {
+          csp: $sniffer.csp,
+          expensiveChecks: true
+        };
+
+    function wrapSharedExpression(exp) {
+      var wrapped = exp;
+
+      if (exp.sharedGetter) {
+        wrapped = function $parseWrapper(self, locals) {
+          return exp(self, locals);
+        };
+        wrapped.literal = exp.literal;
+        wrapped.constant = exp.constant;
+        wrapped.assign = exp.assign;
+      }
+
+      return wrapped;
+    }
+
+    return function $parse(exp, interceptorFn, expensiveChecks) {
+      var parsedExpression, oneTime, cacheKey;
+
+      switch (typeof exp) {
+        case 'string':
+          cacheKey = exp = exp.trim();
+
+          var cache = (expensiveChecks ? cacheExpensive : cacheDefault);
+          parsedExpression = cache[cacheKey];
+
+          if (!parsedExpression) {
+            if (exp.charAt(0) === ':' && exp.charAt(1) === ':') {
+              oneTime = true;
+              exp = exp.substring(2);
+            }
+
+            var parseOptions = expensiveChecks ? $parseOptionsExpensive : $parseOptions;
+            var lexer = new Lexer(parseOptions);
+            var parser = new Parser(lexer, $filter, parseOptions);
+            parsedExpression = parser.parse(exp);
+
+            if (parsedExpression.constant) {
+              parsedExpression.$$watchDelegate = constantWatchDelegate;
+            } else if (oneTime) {
+              //oneTime is not part of the exp passed to the Parser so we may have to
+              //wrap the parsedExpression before adding a $$watchDelegate
+              parsedExpression = wrapSharedExpression(parsedExpression);
+              parsedExpression.$$watchDelegate = parsedExpression.literal ?
+                oneTimeLiteralWatchDelegate : oneTimeWatchDelegate;
+            } else if (parsedExpression.inputs) {
+              parsedExpression.$$watchDelegate = inputsWatchDelegate;
+            }
+
+            cache[cacheKey] = parsedExpression;
+          }
+          return addInterceptor(parsedExpression, interceptorFn);
+
+        case 'function':
+          return addInterceptor(exp, interceptorFn);
+
+        default:
+          return addInterceptor(noop, interceptorFn);
+      }
+    };
+
+    function collectExpressionInputs(inputs, list) {
+      for (var i = 0, ii = inputs.length; i < ii; i++) {
+        var input = inputs[i];
+        if (!input.constant) {
+          if (input.inputs) {
+            collectExpressionInputs(input.inputs, list);
+          } else if (list.indexOf(input) === -1) { // TODO(perf) can we do better?
+            list.push(input);
+          }
+        }
+      }
+
+      return list;
+    }
+
+    function expressionInputDirtyCheck(newValue, oldValueOfValue) {
+
+      if (newValue == null || oldValueOfValue == null) { // null/undefined
+        return newValue === oldValueOfValue;
+      }
+
+      if (typeof newValue === 'object') {
+
+        // attempt to convert the value to a primitive type
+        // TODO(docs): add a note to docs that by implementing valueOf even objects and arrays can
+        //             be cheaply dirty-checked
+        newValue = getValueOf(newValue);
+
+        if (typeof newValue === 'object') {
+          // objects/arrays are not supported - deep-watching them would be too expensive
+          return false;
+        }
+
+        // fall-through to the primitive equality check
+      }
+
+      //Primitive or NaN
+      return newValue === oldValueOfValue || (newValue !== newValue && oldValueOfValue !== oldValueOfValue);
+    }
+
+    function inputsWatchDelegate(scope, listener, objectEquality, parsedExpression) {
+      var inputExpressions = parsedExpression.$$inputs ||
+                    (parsedExpression.$$inputs = collectExpressionInputs(parsedExpression.inputs, []));
+
+      var lastResult;
+
+      if (inputExpressions.length === 1) {
+        var oldInputValue = expressionInputDirtyCheck; // init to something unique so that equals check fails
+        inputExpressions = inputExpressions[0];
+        return scope.$watch(function expressionInputWatch(scope) {
+          var newInputValue = inputExpressions(scope);
+          if (!expressionInputDirtyCheck(newInputValue, oldInputValue)) {
+            lastResult = parsedExpression(scope);
+            oldInputValue = newInputValue && getValueOf(newInputValue);
+          }
+          return lastResult;
+        }, listener, objectEquality);
+      }
+
+      var oldInputValueOfValues = [];
+      for (var i = 0, ii = inputExpressions.length; i < ii; i++) {
+        oldInputValueOfValues[i] = expressionInputDirtyCheck; // init to something unique so that equals check fails
+      }
+
+      return scope.$watch(function expressionInputsWatch(scope) {
+        var changed = false;
+
+        for (var i = 0, ii = inputExpressions.length; i < ii; i++) {
+          var newInputValue = inputExpressions[i](scope);
+          if (changed || (changed = !expressionInputDirtyCheck(newInputValue, oldInputValueOfValues[i]))) {
+            oldInputValueOfValues[i] = newInputValue && getValueOf(newInputValue);
+          }
+        }
+
+        if (changed) {
+          lastResult = parsedExpression(scope);
+        }
+
+        return lastResult;
+      }, listener, objectEquality);
+    }
+
+    function oneTimeWatchDelegate(scope, listener, objectEquality, parsedExpression) {
+      var unwatch, lastValue;
+      return unwatch = scope.$watch(function oneTimeWatch(scope) {
+        return parsedExpression(scope);
+      }, function oneTimeListener(value, old, scope) {
+        lastValue = value;
+        if (isFunction(listener)) {
+          listener.apply(this, arguments);
+        }
+        if (isDefined(value)) {
+          scope.$$postDigest(function() {
+            if (isDefined(lastValue)) {
+              unwatch();
+            }
+          });
+        }
+      }, objectEquality);
+    }
+
+    function oneTimeLiteralWatchDelegate(scope, listener, objectEquality, parsedExpression) {
+      var unwatch, lastValue;
+      return unwatch = scope.$watch(function oneTimeWatch(scope) {
+        return parsedExpression(scope);
+      }, function oneTimeListener(value, old, scope) {
+        lastValue = value;
+        if (isFunction(listener)) {
+          listener.call(this, value, old, scope);
+        }
+        if (isAllDefined(value)) {
+          scope.$$postDigest(function() {
+            if (isAllDefined(lastValue)) unwatch();
+          });
+        }
+      }, objectEquality);
+
+      function isAllDefined(value) {
+        var allDefined = true;
+        forEach(value, function(val) {
+          if (!isDefined(val)) allDefined = false;
+        });
+        return allDefined;
+      }
+    }
+
+    function constantWatchDelegate(scope, listener, objectEquality, parsedExpression) {
+      var unwatch;
+      return unwatch = scope.$watch(function constantWatch(scope) {
+        return parsedExpression(scope);
+      }, function constantListener(value, old, scope) {
+        if (isFunction(listener)) {
+          listener.apply(this, arguments);
+        }
+        unwatch();
+      }, objectEquality);
+    }
+
+    function addInterceptor(parsedExpression, interceptorFn) {
+      if (!interceptorFn) return parsedExpression;
+      var watchDelegate = parsedExpression.$$watchDelegate;
+
+      var regularWatch =
+          watchDelegate !== oneTimeLiteralWatchDelegate &&
+          watchDelegate !== oneTimeWatchDelegate;
+
+      var fn = regularWatch ? function regularInterceptedExpression(scope, locals) {
+        var value = parsedExpression(scope, locals);
+        return interceptorFn(value, scope, locals);
+      } : function oneTimeInterceptedExpression(scope, locals) {
+        var value = parsedExpression(scope, locals);
+        var result = interceptorFn(value, scope, locals);
+        // we only return the interceptor's result if the
+        // initial value is defined (for bind-once)
+        return isDefined(value) ? result : value;
+      };
+
+      // Propagate $$watchDelegates other then inputsWatchDelegate
+      if (parsedExpression.$$watchDelegate &&
+          parsedExpression.$$watchDelegate !== inputsWatchDelegate) {
+        fn.$$watchDelegate = parsedExpression.$$watchDelegate;
+      } else if (!interceptorFn.$stateful) {
+        // If there is an interceptor, but no watchDelegate then treat the interceptor like
+        // we treat filters - it is assumed to be a pure function unless flagged with $stateful
+        fn.$$watchDelegate = inputsWatchDelegate;
+        fn.inputs = [parsedExpression];
+      }
+
+      return fn;
+    }
+  }];
+}
+
+/**
+ * @ngdoc service
+ * @name $q
+ * @requires $rootScope
+ *
+ * @description
+ * A service that helps you run functions asynchronously, and use their return values (or exceptions)
+ * when they are done processing.
+ *
+ * This is an implementation of promises/deferred objects inspired by
+ * [Kris Kowal's Q](https://github.com/kriskowal/q).
+ *
+ * $q can be used in two fashions --- one which is more similar to Kris Kowal's Q or jQuery's Deferred
+ * implementations, and the other which resembles ES6 promises to some degree.
+ *
+ * # $q constructor
+ *
+ * The streamlined ES6 style promise is essentially just using $q as a constructor which takes a `resolver`
+ * function as the first argument. This is similar to the native Promise implementation from ES6 Harmony,
+ * see [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise).
+ *
+ * While the constructor-style use is supported, not all of the supporting methods from ES6 Harmony promises are
+ * available yet.
+ *
+ * It can be used like so:
+ *
+ * ```js
+ *   // for the purpose of this example let's assume that variables `$q` and `okToGreet`
+ *   // are available in the current lexical scope (they could have been injected or passed in).
+ *
+ *   function asyncGreet(name) {
+ *     // perform some asynchronous operation, resolve or reject the promise when appropriate.
+ *     return $q(function(resolve, reject) {
+ *       setTimeout(function() {
+ *         if (okToGreet(name)) {
+ *           resolve('Hello, ' + name + '!');
+ *         } else {
+ *           reject('Greeting ' + name + ' is not allowed.');
+ *         }
+ *       }, 1000);
+ *     });
+ *   }
+ *
+ *   var promise = asyncGreet('Robin Hood');
+ *   promise.then(function(greeting) {
+ *     alert('Success: ' + greeting);
+ *   }, function(reason) {
+ *     alert('Failed: ' + reason);
+ *   });
+ * ```
+ *
+ * Note: progress/notify callbacks are not currently supported via the ES6-style interface.
+ *
+ * However, the more traditional CommonJS-style usage is still available, and documented below.
+ *
+ * [The CommonJS Promise proposal](http://wiki.commonjs.org/wiki/Promises) describes a promise as an
+ * interface for interacting with an object that represents the result of an action that is
+ * performed asynchronously, and may or may not be finished at any given point in time.
+ *
+ * From the perspective of dealing with error handling, deferred and promise APIs are to
+ * asynchronous programming what `try`, `catch` and `throw` keywords are to synchronous programming.
+ *
+ * ```js
+ *   // for the purpose of this example let's assume that variables `$q` and `okToGreet`
+ *   // are available in the current lexical scope (they could have been injected or passed in).
+ *
+ *   function asyncGreet(name) {
+ *     var deferred = $q.defer();
+ *
+ *     setTimeout(function() {
+ *       deferred.notify('About to greet ' + name + '.');
+ *
+ *       if (okToGreet(name)) {
+ *         deferred.resolve('Hello, ' + name + '!');
+ *       } else {
+ *         deferred.reject('Greeting ' + name + ' is not allowed.');
+ *       }
+ *     }, 1000);
+ *
+ *     return deferred.promise;
+ *   }
+ *
+ *   var promise = asyncGreet('Robin Hood');
+ *   promise.then(function(greeting) {
+ *     alert('Success: ' + greeting);
+ *   }, function(reason) {
+ *     alert('Failed: ' + reason);
+ *   }, function(update) {
+ *     alert('Got notification: ' + update);
+ *   });
+ * ```
+ *
+ * At first it might not be obvious why this extra complexity is worth the trouble. The payoff
+ * comes in the way of guarantees that promise and deferred APIs make, see
+ * https://github.com/kriskowal/uncommonjs/blob/master/promises/specification.md.
+ *
+ * Additionally the promise api allows for composition that is very hard to do with the
+ * traditional callback ([CPS](http://en.wikipedia.org/wiki/Continuation-passing_style)) approach.
+ * For more on this please see the [Q documentation](https://github.com/kriskowal/q) especially the
+ * section on serial or parallel joining of promises.
+ *
+ * # The Deferred API
+ *
+ * A new instance of deferred is constructed by calling `$q.defer()`.
+ *
+ * The purpose of the deferred object is to expose the associated Promise instance as well as APIs
+ * that can be used for signaling the successful or unsuccessful completion, as well as the status
+ * of the task.
+ *
+ * **Methods**
+ *
+ * - `resolve(value)` – resolves the derived promise with the `value`. If the value is a rejection
+ *   constructed via `$q.reject`, the promise will be rejected instead.
+ * - `reject(reason)` – rejects the derived promise with the `reason`. This is equivalent to
+ *   resolving it with a rejection constructed via `$q.reject`.
+ * - `notify(value)` - provides updates on the status of the promise's execution. This may be called
+ *   multiple times before the promise is either resolved or rejected.
+ *
+ * **Properties**
+ *
+ * - promise – `{Promise}` – promise object associated with this deferred.
+ *
+ *
+ * # The Promise API
+ *
+ * A new promise instance is created when a deferred instance is created and can be retrieved by
+ * calling `deferred.promise`.
+ *
+ * The purpose of the promise object is to allow for interested parties to get access to the result
+ * of the deferred task when it completes.
+ *
+ * **Methods**
+ *
+ * - `then(successCallback, errorCallback, notifyCallback)` – regardless of when the promise was or
+ *   will be resolved or rejected, `then` calls one of the success or error callbacks asynchronously
+ *   as soon as the result is available. The callbacks are called with a single argument: the result
+ *   or rejection reason. Additionally, the notify callback may be called zero or more times to
+ *   provide a progress indication, before the promise is resolved or rejected.
+ *
+ *   This method *returns a new promise* which is resolved or rejected via the return value of the
+ *   `successCallback`, `errorCallback`. It also notifies via the return value of the
+ *   `notifyCallback` method. The promise cannot be resolved or rejected from the notifyCallback
+ *   method.
+ *
+ * - `catch(errorCallback)` – shorthand for `promise.then(null, errorCallback)`
+ *
+ * - `finally(callback, notifyCallback)` – allows you to observe either the fulfillment or rejection of a promise,
+ *   but to do so without modifying the final value. This is useful to release resources or do some
+ *   clean-up that needs to be done whether the promise was rejected or resolved. See the [full
+ *   specification](https://github.com/kriskowal/q/wiki/API-Reference#promisefinallycallback) for
+ *   more information.
+ *
+ * # Chaining promises
+ *
+ * Because calling the `then` method of a promise returns a new derived promise, it is easily
+ * possible to create a chain of promises:
+ *
+ * ```js
+ *   promiseB = promiseA.then(function(result) {
+ *     return result + 1;
+ *   });
+ *
+ *   // promiseB will be resolved immediately after promiseA is resolved and its value
+ *   // will be the result of promiseA incremented by 1
+ * ```
+ *
+ * It is possible to create chains of any length and since a promise can be resolved with another
+ * promise (which will defer its resolution further), it is possible to pause/defer resolution of
+ * the promises at any point in the chain. This makes it possible to implement powerful APIs like
+ * $http's response interceptors.
+ *
+ *
+ * # Differences between Kris Kowal's Q and $q
+ *
+ *  There are two main differences:
+ *
+ * - $q is integrated with the {@link ng.$rootScope.Scope} Scope model observation
+ *   mechanism in angular, which means faster propagation of resolution or rejection into your
+ *   models and avoiding unnecessary browser repaints, which would result in flickering UI.
+ * - Q has many more features than $q, but that comes at a cost of bytes. $q is tiny, but contains
+ *   all the important functionality needed for common async tasks.
+ *
+ *  # Testing
+ *
+ *  ```js
+ *    it('should simulate promise', inject(function($q, $rootScope) {
+ *      var deferred = $q.defer();
+ *      var promise = deferred.promise;
+ *      var resolvedValue;
+ *
+ *      promise.then(function(value) { resolvedValue = value; });
+ *      expect(resolvedValue).toBeUndefined();
+ *
+ *      // Simulate resolving of promise
+ *      deferred.resolve(123);
+ *      // Note that the 'then' function does not get called synchronously.
+ *      // This is because we want the promise API to always be async, whether or not
+ *      // it got called synchronously or asynchronously.
+ *      expect(resolvedValue).toBeUndefined();
+ *
+ *      // Propagate promise resolution to 'then' functions using $apply().
+ *      $rootScope.$apply();
+ *      expect(resolvedValue).toEqual(123);
+ *    }));
+ *  ```
+ *
+ * @param {function(function, function)} resolver Function which is responsible for resolving or
+ *   rejecting the newly created promise. The first parameter is a function which resolves the
+ *   promise, the second parameter is a function which rejects the promise.
+ *
+ * @returns {Promise} The newly created promise.
+ */
+function $QProvider() {
+
+  this.$get = ['$rootScope', '$exceptionHandler', function($rootScope, $exceptionHandler) {
+    return qFactory(function(callback) {
+      $rootScope.$evalAsync(callback);
+    }, $exceptionHandler);
+  }];
+}
+
+function $$QProvider() {
+  this.$get = ['$browser', '$exceptionHandler', function($browser, $exceptionHandler) {
+    return qFactory(function(callback) {
+      $browser.defer(callback);
+    }, $exceptionHandler);
+  }];
+}
+
+/**
+ * Constructs a promise manager.
+ *
+ * @param {function(function)} nextTick Function for executing functions in the next turn.
+ * @param {function(...*)} exceptionHandler Function into which unexpected exceptions are passed for
+ *     debugging purposes.
+ * @returns {object} Promise manager.
+ */
+function qFactory(nextTick, exceptionHandler) {
+  var $qMinErr = minErr('$q', TypeError);
+  function callOnce(self, resolveFn, rejectFn) {
+    var called = false;
+    function wrap(fn) {
+      return function(value) {
+        if (called) return;
+        called = true;
+        fn.call(self, value);
+      };
+    }
+
+    return [wrap(resolveFn), wrap(rejectFn)];
+  }
+
+  /**
+   * @ngdoc method
+   * @name ng.$q#defer
+   * @kind function
+   *
+   * @description
+   * Creates a `Deferred` object which represents a task which will finish in the future.
+   *
+   * @returns {Deferred} Returns a new instance of deferred.
+   */
+  var defer = function() {
+    return new Deferred();
+  };
+
+  function Promise() {
+    this.$$state = { status: 0 };
+  }
+
+  Promise.prototype = {
+    then: function(onFulfilled, onRejected, progressBack) {
+      var result = new Deferred();
+
+      this.$$state.pending = this.$$state.pending || [];
+      this.$$state.pending.push([result, onFulfilled, onRejected, progressBack]);
+      if (this.$$state.status > 0) scheduleProcessQueue(this.$$state);
+
+      return result.promise;
+    },
+
+    "catch": function(callback) {
+      return this.then(null, callback);
+    },
+
+    "finally": function(callback, progressBack) {
+      return this.then(function(value) {
+        return handleCallback(value, true, callback);
+      }, function(error) {
+        return handleCallback(error, false, callback);
+      }, progressBack);
+    }
+  };
+
+  //Faster, more basic than angular.bind http://jsperf.com/angular-bind-vs-custom-vs-native
+  function simpleBind(context, fn) {
+    return function(value) {
+      fn.call(context, value);
+    };
+  }
+
+  function processQueue(state) {
+    var fn, promise, pending;
+
+    pending = state.pending;
+    state.processScheduled = false;
+    state.pending = undefined;
+    for (var i = 0, ii = pending.length; i < ii; ++i) {
+      promise = pending[i][0];
+      fn = pending[i][state.status];
+      try {
+        if (isFunction(fn)) {
+          promise.resolve(fn(state.value));
+        } else if (state.status === 1) {
+          promise.resolve(state.value);
+        } else {
+          promise.reject(state.value);
+        }
+      } catch (e) {
+        promise.reject(e);
+        exceptionHandler(e);
+      }
+    }
+  }
+
+  function scheduleProcessQueue(state) {
+    if (state.processScheduled || !state.pending) return;
+    state.processScheduled = true;
+    nextTick(function() { processQueue(state); });
+  }
+
+  function Deferred() {
+    this.promise = new Promise();
+    //Necessary to support unbound execution :/
+    this.resolve = simpleBind(this, this.resolve);
+    this.reject = simpleBind(this, this.reject);
+    this.notify = simpleBind(this, this.notify);
+  }
+
+  Deferred.prototype = {
+    resolve: function(val) {
+      if (this.promise.$$state.status) return;
+      if (val === this.promise) {
+        this.$$reject($qMinErr(
+          'qcycle',
+          "Expected promise to be resolved with value other than itself '{0}'",
+          val));
+      } else {
+        this.$$resolve(val);
+      }
+
+    },
+
+    $$resolve: function(val) {
+      var then, fns;
+
+      fns = callOnce(this, this.$$resolve, this.$$reject);
+      try {
+        if ((isObject(val) || isFunction(val))) then = val && val.then;
+        if (isFunction(then)) {
+          this.promise.$$state.status = -1;
+          then.call(val, fns[0], fns[1], this.notify);
+        } else {
+          this.promise.$$state.value = val;
+          this.promise.$$state.status = 1;
+          scheduleProcessQueue(this.promise.$$state);
+        }
+      } catch (e) {
+        fns[1](e);
+        exceptionHandler(e);
+      }
+    },
+
+    reject: function(reason) {
+      if (this.promise.$$state.status) return;
+      this.$$reject(reason);
+    },
+
+    $$reject: function(reason) {
+      this.promise.$$state.value = reason;
+      this.promise.$$state.status = 2;
+      scheduleProcessQueue(this.promise.$$state);
+    },
+
+    notify: function(progress) {
+      var callbacks = this.promise.$$state.pending;
+
+      if ((this.promise.$$state.status <= 0) && callbacks && callbacks.length) {
+        nextTick(function() {
+          var callback, result;
+          for (var i = 0, ii = callbacks.length; i < ii; i++) {
+            result = callbacks[i][0];
+            callback = callbacks[i][3];
+            try {
+              result.notify(isFunction(callback) ? callback(progress) : progress);
+            } catch (e) {
+              exceptionHandler(e);
+            }
+          }
+        });
+      }
+    }
+  };
+
+  /**
+   * @ngdoc method
+   * @name $q#reject
+   * @kind function
+   *
+   * @description
+   * Creates a promise that is resolved as rejected with the specified `reason`. This api should be
+   * used to forward rejection in a chain of promises. If you are dealing with the last promise in
+   * a promise chain, you don't need to worry about it.
+   *
+   * When comparing deferreds/promises to the familiar behavior of try/catch/throw, think of
+   * `reject` as the `throw` keyword in JavaScript. This also means that if you "catch" an error via
+   * a promise error callback and you want to forward the error to the promise derived from the
+   * current promise, you have to "rethrow" the error by returning a rejection constructed via
+   * `reject`.
+   *
+   * ```js
+   *   promiseB = promiseA.then(function(result) {
+   *     // success: do something and resolve promiseB
+   *     //          with the old or a new result
+   *     return result;
+   *   }, function(reason) {
+   *     // error: handle the error if possible and
+   *     //        resolve promiseB with newPromiseOrValue,
+   *     //        otherwise forward the rejection to promiseB
+   *     if (canHandle(reason)) {
+   *      // handle the error and recover
+   *      return newPromiseOrValue;
+   *     }
+   *     return $q.reject(reason);
+   *   });
+   * ```
+   *
+   * @param {*} reason Constant, message, exception or an object representing the rejection reason.
+   * @returns {Promise} Returns a promise that was already resolved as rejected with the `reason`.
+   */
+  var reject = function(reason) {
+    var result = new Deferred();
+    result.reject(reason);
+    return result.promise;
+  };
+
+  var makePromise = function makePromise(value, resolved) {
+    var result = new Deferred();
+    if (resolved) {
+      result.resolve(value);
+    } else {
+      result.reject(value);
+    }
+    return result.promise;
+  };
+
+  var handleCallback = function handleCallback(value, isResolved, callback) {
+    var callbackOutput = null;
+    try {
+      if (isFunction(callback)) callbackOutput = callback();
+    } catch (e) {
+      return makePromise(e, false);
+    }
+    if (isPromiseLike(callbackOutput)) {
+      return callbackOutput.then(function() {
+        return makePromise(value, isResolved);
+      }, function(error) {
+        return makePromise(error, false);
+      });
+    } else {
+      return makePromise(value, isResolved);
+    }
+  };
+
+  /**
+   * @ngdoc method
+   * @name $q#when
+   * @kind function
+   *
+   * @description
+   * Wraps an object that might be a value or a (3rd party) then-able promise into a $q promise.
+   * This is useful when you are dealing with an object that might or might not be a promise, or if
+   * the promise comes from a source that can't be trusted.
+   *
+   * @param {*} value Value or a promise
+   * @returns {Promise} Returns a promise of the passed value or promise
+   */
+
+
+  var when = function(value, callback, errback, progressBack) {
+    var result = new Deferred();
+    result.resolve(value);
+    return result.promise.then(callback, errback, progressBack);
+  };
+
+  /**
+   * @ngdoc method
+   * @name $q#all
+   * @kind function
+   *
+   * @description
+   * Combines multiple promises into a single promise that is resolved when all of the input
+   * promises are resolved.
+   *
+   * @param {Array.<Promise>|Object.<Promise>} promises An array or hash of promises.
+   * @returns {Promise} Returns a single promise that will be resolved with an array/hash of values,
+   *   each value corresponding to the promise at the same index/key in the `promises` array/hash.
+   *   If any of the promises is resolved with a rejection, this resulting promise will be rejected
+   *   with the same rejection value.
+   */
+
+  function all(promises) {
+    var deferred = new Deferred(),
+        counter = 0,
+        results = isArray(promises) ? [] : {};
+
+    forEach(promises, function(promise, key) {
+      counter++;
+      when(promise).then(function(value) {
+        if (results.hasOwnProperty(key)) return;
+        results[key] = value;
+        if (!(--counter)) deferred.resolve(results);
+      }, function(reason) {
+        if (results.hasOwnProperty(key)) return;
+        deferred.reject(reason);
+      });
+    });
+
+    if (counter === 0) {
+      deferred.resolve(results);
+    }
+
+    return deferred.promise;
+  }
+
+  var $Q = function Q(resolver) {
+    if (!isFunction(resolver)) {
+      throw $qMinErr('norslvr', "Expected resolverFn, got '{0}'", resolver);
+    }
+
+    if (!(this instanceof Q)) {
+      // More useful when $Q is the Promise itself.
+      return new Q(resolver);
+    }
+
+    var deferred = new Deferred();
+
+    function resolveFn(value) {
+      deferred.resolve(value);
+    }
+
+    function rejectFn(reason) {
+      deferred.reject(reason);
+    }
+
+    resolver(resolveFn, rejectFn);
+
+    return deferred.promise;
+  };
+
+  $Q.defer = defer;
+  $Q.reject = reject;
+  $Q.when = when;
+  $Q.all = all;
+
+  return $Q;
+}
+
+function $$RAFProvider() { //rAF
+  this.$get = ['$window', '$timeout', function($window, $timeout) {
+    var requestAnimationFrame = $window.requestAnimationFrame ||
+                                $window.webkitRequestAnimationFrame;
+
+    var cancelAnimationFrame = $window.cancelAnimationFrame ||
+                               $window.webkitCancelAnimationFrame ||
+                               $window.webkitCancelRequestAnimationFrame;
+
+    var rafSupported = !!requestAnimationFrame;
+    var rafFn = rafSupported
+      ? function(fn) {
+          var id = requestAnimationFrame(fn);
+          return function() {
+            cancelAnimationFrame(id);
+          };
+        }
+      : function(fn) {
+          var timer = $timeout(fn, 16.66, false); // 1000 / 60 = 16.666
+          return function() {
+            $timeout.cancel(timer);
+          };
+        };
+
+    queueFn.supported = rafSupported;
+
+    var cancelLastRAF;
+    var taskCount = 0;
+    var taskQueue = [];
+    return queueFn;
+
+    function flush() {
+      for (var i = 0; i < taskQueue.length; i++) {
+        var task = taskQueue[i];
+        if (task) {
+          taskQueue[i] = null;
+          task();
+        }
+      }
+      taskCount = taskQueue.length = 0;
+    }
+
+    function queueFn(asyncFn) {
+      var index = taskQueue.length;
+
+      taskCount++;
+      taskQueue.push(asyncFn);
+
+      if (index === 0) {
+        cancelLastRAF = rafFn(flush);
+      }
+
+      return function cancelQueueFn() {
+        if (index >= 0) {
+          taskQueue[index] = null;
+          index = null;
+
+          if (--taskCount === 0 && cancelLastRAF) {
+            cancelLastRAF();
+            cancelLastRAF = null;
+            taskQueue.length = 0;
+          }
+        }
+      };
+    }
+  }];
+}
+
+/**
+ * DESIGN NOTES
+ *
+ * The design decisions behind the scope are heavily favored for speed and memory consumption.
+ *
+ * The typical use of scope is to watch the expressions, which most of the time return the same
+ * value as last time so we optimize the operation.
+ *
+ * Closures construction is expensive in terms of speed as well as memory:
+ *   - No closures, instead use prototypical inheritance for API
+ *   - Internal state needs to be stored on scope directly, which means that private state is
+ *     exposed as $$____ properties
+ *
+ * Loop operations are optimized by using while(count--) { ... }
+ *   - this means that in order to keep the same order of execution as addition we have to add
+ *     items to the array at the beginning (unshift) instead of at the end (push)
+ *
+ * Child scopes are created and removed often
+ *   - Using an array would be slow since inserts in middle are expensive so we use linked list
+ *
+ * There are few watches then a lot of observers. This is why you don't want the observer to be
+ * implemented in the same way as watch. Watch requires return of initialization function which
+ * are expensive to construct.
+ */
+
+
+/**
+ * @ngdoc provider
+ * @name $rootScopeProvider
+ * @description
+ *
+ * Provider for the $rootScope service.
+ */
+
+/**
+ * @ngdoc method
+ * @name $rootScopeProvider#digestTtl
+ * @description
+ *
+ * Sets the number of `$digest` iterations the scope should attempt to execute before giving up and
+ * assuming that the model is unstable.
+ *
+ * The current default is 10 iterations.
+ *
+ * In complex applications it's possible that the dependencies between `$watch`s will result in
+ * several digest iterations. However if an application needs more than the default 10 digest
+ * iterations for its model to stabilize then you should investigate what is causing the model to
+ * continuously change during the digest.
+ *
+ * Increasing the TTL could have performance implications, so you should not change it without
+ * proper justification.
+ *
+ * @param {number} limit The number of digest iterations.
+ */
+
+
+/**
+ * @ngdoc service
+ * @name $rootScope
+ * @description
+ *
+ * Every application has a single root {@link ng.$rootScope.Scope scope}.
+ * All other scopes are descendant scopes of the root scope. Scopes provide separation
+ * between the model and the view, via a mechanism for watching the model for changes.
+ * They also provide an event emission/broadcast and subscription facility. See the
+ * {@link guide/scope developer guide on scopes}.
+ */
+function $RootScopeProvider() {
+  var TTL = 10;
+  var $rootScopeMinErr = minErr('$rootScope');
+  var lastDirtyWatch = null;
+  var applyAsyncId = null;
+
+  this.digestTtl = function(value) {
+    if (arguments.length) {
+      TTL = value;
+    }
+    return TTL;
+  };
+
+  function createChildScopeClass(parent) {
+    function ChildScope() {
+      this.$$watchers = this.$$nextSibling =
+          this.$$childHead = this.$$childTail = null;
+      this.$$listeners = {};
+      this.$$listenerCount = {};
+      this.$id = nextUid();
+      this.$$ChildScope = null;
+    }
+    ChildScope.prototype = parent;
+    return ChildScope;
+  }
+
+  this.$get = ['$injector', '$exceptionHandler', '$parse', '$browser',
+      function($injector, $exceptionHandler, $parse, $browser) {
+
+    function destroyChildScope($event) {
+        $event.currentScope.$$destroyed = true;
+    }
+
+    /**
+     * @ngdoc type
+     * @name $rootScope.Scope
+     *
+     * @description
+     * A root scope can be retrieved using the {@link ng.$rootScope $rootScope} key from the
+     * {@link auto.$injector $injector}. Child scopes are created using the
+     * {@link ng.$rootScope.Scope#$new $new()} method. (Most scopes are created automatically when
+     * compiled HTML template is executed.) See also the {@link guide/scope Scopes guide} for
+     * an in-depth introduction and usage examples.
+     *
+     *
+     * # Inheritance
+     * A scope can inherit from a parent scope, as in this example:
+     * ```js
+         var parent = $rootScope;
+         var child = parent.$new();
+
+         parent.salutation = "Hello";
+         expect(child.salutation).toEqual('Hello');
+
+         child.salutation = "Welcome";
+         expect(child.salutation).toEqual('Welcome');
+         expect(parent.salutation).toEqual('Hello');
+     * ```
+     *
+     * When interacting with `Scope` in tests, additional helper methods are available on the
+     * instances of `Scope` type. See {@link ngMock.$rootScope.Scope ngMock Scope} for additional
+     * details.
+     *
+     *
+     * @param {Object.<string, function()>=} providers Map of service factory which need to be
+     *                                       provided for the current scope. Defaults to {@link ng}.
+     * @param {Object.<string, *>=} instanceCache Provides pre-instantiated services which should
+     *                              append/override services provided by `providers`. This is handy
+     *                              when unit-testing and having the need to override a default
+     *                              service.
+     * @returns {Object} Newly created scope.
+     *
+     */
+    function Scope() {
+      this.$id = nextUid();
+      this.$$phase = this.$parent = this.$$watchers =
+                     this.$$nextSibling = this.$$prevSibling =
+                     this.$$childHead = this.$$childTail = null;
+      this.$root = this;
+      this.$$destroyed = false;
+      this.$$listeners = {};
+      this.$$listenerCount = {};
+      this.$$isolateBindings = null;
+    }
+
+    /**
+     * @ngdoc property
+     * @name $rootScope.Scope#$id
+     *
+     * @description
+     * Unique scope ID (monotonically increasing) useful for debugging.
+     */
+
+     /**
+      * @ngdoc property
+      * @name $rootScope.Scope#$parent
+      *
+      * @description
+      * Reference to the parent scope.
+      */
+
+      /**
+       * @ngdoc property
+       * @name $rootScope.Scope#$root
+       *
+       * @description
+       * Reference to the root scope.
+       */
+
+    Scope.prototype = {
+      constructor: Scope,
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$new
+       * @kind function
+       *
+       * @description
+       * Creates a new child {@link ng.$rootScope.Scope scope}.
+       *
+       * The parent scope will propagate the {@link ng.$rootScope.Scope#$digest $digest()} event.
+       * The scope can be removed from the scope hierarchy using {@link ng.$rootScope.Scope#$destroy $destroy()}.
+       *
+       * {@link ng.$rootScope.Scope#$destroy $destroy()} must be called on a scope when it is
+       * desired for the scope and its child scopes to be permanently detached from the parent and
+       * thus stop participating in model change detection and listener notification by invoking.
+       *
+       * @param {boolean} isolate If true, then the scope does not prototypically inherit from the
+       *         parent scope. The scope is isolated, as it can not see parent scope properties.
+       *         When creating widgets, it is useful for the widget to not accidentally read parent
+       *         state.
+       *
+       * @param {Scope} [parent=this] The {@link ng.$rootScope.Scope `Scope`} that will be the `$parent`
+       *                              of the newly created scope. Defaults to `this` scope if not provided.
+       *                              This is used when creating a transclude scope to correctly place it
+       *                              in the scope hierarchy while maintaining the correct prototypical
+       *                              inheritance.
+       *
+       * @returns {Object} The newly created child scope.
+       *
+       */
+      $new: function(isolate, parent) {
+        var child;
+
+        parent = parent || this;
+
+        if (isolate) {
+          child = new Scope();
+          child.$root = this.$root;
+        } else {
+          // Only create a child scope class if somebody asks for one,
+          // but cache it to allow the VM to optimize lookups.
+          if (!this.$$ChildScope) {
+            this.$$ChildScope = createChildScopeClass(this);
+          }
+          child = new this.$$ChildScope();
+        }
+        child.$parent = parent;
+        child.$$prevSibling = parent.$$childTail;
+        if (parent.$$childHead) {
+          parent.$$childTail.$$nextSibling = child;
+          parent.$$childTail = child;
+        } else {
+          parent.$$childHead = parent.$$childTail = child;
+        }
+
+        // When the new scope is not isolated or we inherit from `this`, and
+        // the parent scope is destroyed, the property `$$destroyed` is inherited
+        // prototypically. In all other cases, this property needs to be set
+        // when the parent scope is destroyed.
+        // The listener needs to be added after the parent is set
+        if (isolate || parent != this) child.$on('$destroy', destroyChildScope);
+
+        return child;
+      },
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$watch
+       * @kind function
+       *
+       * @description
+       * Registers a `listener` callback to be executed whenever the `watchExpression` changes.
+       *
+       * - The `watchExpression` is called on every call to {@link ng.$rootScope.Scope#$digest
+       *   $digest()} and should return the value that will be watched. (Since
+       *   {@link ng.$rootScope.Scope#$digest $digest()} reruns when it detects changes the
+       *   `watchExpression` can execute multiple times per
+       *   {@link ng.$rootScope.Scope#$digest $digest()} and should be idempotent.)
+       * - The `listener` is called only when the value from the current `watchExpression` and the
+       *   previous call to `watchExpression` are not equal (with the exception of the initial run,
+       *   see below). Inequality is determined according to reference inequality,
+       *   [strict comparison](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators)
+       *    via the `!==` Javascript operator, unless `objectEquality == true`
+       *   (see next point)
+       * - When `objectEquality == true`, inequality of the `watchExpression` is determined
+       *   according to the {@link angular.equals} function. To save the value of the object for
+       *   later comparison, the {@link angular.copy} function is used. This therefore means that
+       *   watching complex objects will have adverse memory and performance implications.
+       * - The watch `listener` may change the model, which may trigger other `listener`s to fire.
+       *   This is achieved by rerunning the watchers until no changes are detected. The rerun
+       *   iteration limit is 10 to prevent an infinite loop deadlock.
+       *
+       *
+       * If you want to be notified whenever {@link ng.$rootScope.Scope#$digest $digest} is called,
+       * you can register a `watchExpression` function with no `listener`. (Be prepared for
+       * multiple calls to your `watchExpression` because it will execute multiple times in a
+       * single {@link ng.$rootScope.Scope#$digest $digest} cycle if a change is detected.)
+       *
+       * After a watcher is registered with the scope, the `listener` fn is called asynchronously
+       * (via {@link ng.$rootScope.Scope#$evalAsync $evalAsync}) to initialize the
+       * watcher. In rare cases, this is undesirable because the listener is called when the result
+       * of `watchExpression` didn't change. To detect this scenario within the `listener` fn, you
+       * can compare the `newVal` and `oldVal`. If these two values are identical (`===`) then the
+       * listener was called due to initialization.
+       *
+       *
+       *
+       * # Example
+       * ```js
+           // let's assume that scope was dependency injected as the $rootScope
+           var scope = $rootScope;
+           scope.name = 'misko';
+           scope.counter = 0;
+
+           expect(scope.counter).toEqual(0);
+           scope.$watch('name', function(newValue, oldValue) {
+             scope.counter = scope.counter + 1;
+           });
+           expect(scope.counter).toEqual(0);
+
+           scope.$digest();
+           // the listener is always called during the first $digest loop after it was registered
+           expect(scope.counter).toEqual(1);
+
+           scope.$digest();
+           // but now it will not be called unless the value changes
+           expect(scope.counter).toEqual(1);
+
+           scope.name = 'adam';
+           scope.$digest();
+           expect(scope.counter).toEqual(2);
+
+
+
+           // Using a function as a watchExpression
+           var food;
+           scope.foodCounter = 0;
+           expect(scope.foodCounter).toEqual(0);
+           scope.$watch(
+             // This function returns the value being watched. It is called for each turn of the $digest loop
+             function() { return food; },
+             // This is the change listener, called when the value returned from the above function changes
+             function(newValue, oldValue) {
+               if ( newValue !== oldValue ) {
+                 // Only increment the counter if the value changed
+                 scope.foodCounter = scope.foodCounter + 1;
+               }
+             }
+           );
+           // No digest has been run so the counter will be zero
+           expect(scope.foodCounter).toEqual(0);
+
+           // Run the digest but since food has not changed count will still be zero
+           scope.$digest();
+           expect(scope.foodCounter).toEqual(0);
+
+           // Update food and run digest.  Now the counter will increment
+           food = 'cheeseburger';
+           scope.$digest();
+           expect(scope.foodCounter).toEqual(1);
+
+       * ```
+       *
+       *
+       *
+       * @param {(function()|string)} watchExpression Expression that is evaluated on each
+       *    {@link ng.$rootScope.Scope#$digest $digest} cycle. A change in the return value triggers
+       *    a call to the `listener`.
+       *
+       *    - `string`: Evaluated as {@link guide/expression expression}
+       *    - `function(scope)`: called with current `scope` as a parameter.
+       * @param {function(newVal, oldVal, scope)} listener Callback called whenever the value
+       *    of `watchExpression` changes.
+       *
+       *    - `newVal` contains the current value of the `watchExpression`
+       *    - `oldVal` contains the previous value of the `watchExpression`
+       *    - `scope` refers to the current scope
+       * @param {boolean=} objectEquality Compare for object equality using {@link angular.equals} instead of
+       *     comparing for reference equality.
+       * @returns {function()} Returns a deregistration function for this listener.
+       */
+      $watch: function(watchExp, listener, objectEquality) {
+        var get = $parse(watchExp);
+
+        if (get.$$watchDelegate) {
+          return get.$$watchDelegate(this, listener, objectEquality, get);
+        }
+        var scope = this,
+            array = scope.$$watchers,
+            watcher = {
+              fn: listener,
+              last: initWatchVal,
+              get: get,
+              exp: watchExp,
+              eq: !!objectEquality
+            };
+
+        lastDirtyWatch = null;
+
+        if (!isFunction(listener)) {
+          watcher.fn = noop;
+        }
+
+        if (!array) {
+          array = scope.$$watchers = [];
+        }
+        // we use unshift since we use a while loop in $digest for speed.
+        // the while loop reads in reverse order.
+        array.unshift(watcher);
+
+        return function deregisterWatch() {
+          arrayRemove(array, watcher);
+          lastDirtyWatch = null;
+        };
+      },
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$watchGroup
+       * @kind function
+       *
+       * @description
+       * A variant of {@link ng.$rootScope.Scope#$watch $watch()} where it watches an array of `watchExpressions`.
+       * If any one expression in the collection changes the `listener` is executed.
+       *
+       * - The items in the `watchExpressions` array are observed via standard $watch operation and are examined on every
+       *   call to $digest() to see if any items changes.
+       * - The `listener` is called whenever any expression in the `watchExpressions` array changes.
+       *
+       * @param {Array.<string|Function(scope)>} watchExpressions Array of expressions that will be individually
+       * watched using {@link ng.$rootScope.Scope#$watch $watch()}
+       *
+       * @param {function(newValues, oldValues, scope)} listener Callback called whenever the return value of any
+       *    expression in `watchExpressions` changes
+       *    The `newValues` array contains the current values of the `watchExpressions`, with the indexes matching
+       *    those of `watchExpression`
+       *    and the `oldValues` array contains the previous values of the `watchExpressions`, with the indexes matching
+       *    those of `watchExpression`
+       *    The `scope` refers to the current scope.
+       * @returns {function()} Returns a de-registration function for all listeners.
+       */
+      $watchGroup: function(watchExpressions, listener) {
+        var oldValues = new Array(watchExpressions.length);
+        var newValues = new Array(watchExpressions.length);
+        var deregisterFns = [];
+        var self = this;
+        var changeReactionScheduled = false;
+        var firstRun = true;
+
+        if (!watchExpressions.length) {
+          // No expressions means we call the listener ASAP
+          var shouldCall = true;
+          self.$evalAsync(function() {
+            if (shouldCall) listener(newValues, newValues, self);
+          });
+          return function deregisterWatchGroup() {
+            shouldCall = false;
+          };
+        }
+
+        if (watchExpressions.length === 1) {
+          // Special case size of one
+          return this.$watch(watchExpressions[0], function watchGroupAction(value, oldValue, scope) {
+            newValues[0] = value;
+            oldValues[0] = oldValue;
+            listener(newValues, (value === oldValue) ? newValues : oldValues, scope);
+          });
+        }
+
+        forEach(watchExpressions, function(expr, i) {
+          var unwatchFn = self.$watch(expr, function watchGroupSubAction(value, oldValue) {
+            newValues[i] = value;
+            oldValues[i] = oldValue;
+            if (!changeReactionScheduled) {
+              changeReactionScheduled = true;
+              self.$evalAsync(watchGroupAction);
+            }
+          });
+          deregisterFns.push(unwatchFn);
+        });
+
+        function watchGroupAction() {
+          changeReactionScheduled = false;
+
+          if (firstRun) {
+            firstRun = false;
+            listener(newValues, newValues, self);
+          } else {
+            listener(newValues, oldValues, self);
+          }
+        }
+
+        return function deregisterWatchGroup() {
+          while (deregisterFns.length) {
+            deregisterFns.shift()();
+          }
+        };
+      },
+
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$watchCollection
+       * @kind function
+       *
+       * @description
+       * Shallow watches the properties of an object and fires whenever any of the properties change
+       * (for arrays, this implies watching the array items; for object maps, this implies watching
+       * the properties). If a change is detected, the `listener` callback is fired.
+       *
+       * - The `obj` collection is observed via standard $watch operation and is examined on every
+       *   call to $digest() to see if any items have been added, removed, or moved.
+       * - The `listener` is called whenever anything within the `obj` has changed. Examples include
+       *   adding, removing, and moving items belonging to an object or array.
+       *
+       *
+       * # Example
+       * ```js
+          $scope.names = ['igor', 'matias', 'misko', 'james'];
+          $scope.dataCount = 4;
+
+          $scope.$watchCollection('names', function(newNames, oldNames) {
+            $scope.dataCount = newNames.length;
+          });
+
+          expect($scope.dataCount).toEqual(4);
+          $scope.$digest();
+
+          //still at 4 ... no changes
+          expect($scope.dataCount).toEqual(4);
+
+          $scope.names.pop();
+          $scope.$digest();
+
+          //now there's been a change
+          expect($scope.dataCount).toEqual(3);
+       * ```
+       *
+       *
+       * @param {string|function(scope)} obj Evaluated as {@link guide/expression expression}. The
+       *    expression value should evaluate to an object or an array which is observed on each
+       *    {@link ng.$rootScope.Scope#$digest $digest} cycle. Any shallow change within the
+       *    collection will trigger a call to the `listener`.
+       *
+       * @param {function(newCollection, oldCollection, scope)} listener a callback function called
+       *    when a change is detected.
+       *    - The `newCollection` object is the newly modified data obtained from the `obj` expression
+       *    - The `oldCollection` object is a copy of the former collection data.
+       *      Due to performance considerations, the`oldCollection` value is computed only if the
+       *      `listener` function declares two or more arguments.
+       *    - The `scope` argument refers to the current scope.
+       *
+       * @returns {function()} Returns a de-registration function for this listener. When the
+       *    de-registration function is executed, the internal watch operation is terminated.
+       */
+      $watchCollection: function(obj, listener) {
+        $watchCollectionInterceptor.$stateful = true;
+
+        var self = this;
+        // the current value, updated on each dirty-check run
+        var newValue;
+        // a shallow copy of the newValue from the last dirty-check run,
+        // updated to match newValue during dirty-check run
+        var oldValue;
+        // a shallow copy of the newValue from when the last change happened
+        var veryOldValue;
+        // only track veryOldValue if the listener is asking for it
+        var trackVeryOldValue = (listener.length > 1);
+        var changeDetected = 0;
+        var changeDetector = $parse(obj, $watchCollectionInterceptor);
+        var internalArray = [];
+        var internalObject = {};
+        var initRun = true;
+        var oldLength = 0;
+
+        function $watchCollectionInterceptor(_value) {
+          newValue = _value;
+          var newLength, key, bothNaN, newItem, oldItem;
+
+          // If the new value is undefined, then return undefined as the watch may be a one-time watch
+          if (isUndefined(newValue)) return;
+
+          if (!isObject(newValue)) { // if primitive
+            if (oldValue !== newValue) {
+              oldValue = newValue;
+              changeDetected++;
+            }
+          } else if (isArrayLike(newValue)) {
+            if (oldValue !== internalArray) {
+              // we are transitioning from something which was not an array into array.
+              oldValue = internalArray;
+              oldLength = oldValue.length = 0;
+              changeDetected++;
+            }
+
+            newLength = newValue.length;
+
+            if (oldLength !== newLength) {
+              // if lengths do not match we need to trigger change notification
+              changeDetected++;
+              oldValue.length = oldLength = newLength;
+            }
+            // copy the items to oldValue and look for changes.
+            for (var i = 0; i < newLength; i++) {
+              oldItem = oldValue[i];
+              newItem = newValue[i];
+
+              bothNaN = (oldItem !== oldItem) && (newItem !== newItem);
+              if (!bothNaN && (oldItem !== newItem)) {
+                changeDetected++;
+                oldValue[i] = newItem;
+              }
+            }
+          } else {
+            if (oldValue !== internalObject) {
+              // we are transitioning from something which was not an object into object.
+              oldValue = internalObject = {};
+              oldLength = 0;
+              changeDetected++;
+            }
+            // copy the items to oldValue and look for changes.
+            newLength = 0;
+            for (key in newValue) {
+              if (newValue.hasOwnProperty(key)) {
+                newLength++;
+                newItem = newValue[key];
+                oldItem = oldValue[key];
+
+                if (key in oldValue) {
+                  bothNaN = (oldItem !== oldItem) && (newItem !== newItem);
+                  if (!bothNaN && (oldItem !== newItem)) {
+                    changeDetected++;
+                    oldValue[key] = newItem;
+                  }
+                } else {
+                  oldLength++;
+                  oldValue[key] = newItem;
+                  changeDetected++;
+                }
+              }
+            }
+            if (oldLength > newLength) {
+              // we used to have more keys, need to find them and destroy them.
+              changeDetected++;
+              for (key in oldValue) {
+                if (!newValue.hasOwnProperty(key)) {
+                  oldLength--;
+                  delete oldValue[key];
+                }
+              }
+            }
+          }
+          return changeDetected;
+        }
+
+        function $watchCollectionAction() {
+          if (initRun) {
+            initRun = false;
+            listener(newValue, newValue, self);
+          } else {
+            listener(newValue, veryOldValue, self);
+          }
+
+          // make a copy for the next time a collection is changed
+          if (trackVeryOldValue) {
+            if (!isObject(newValue)) {
+              //primitive
+              veryOldValue = newValue;
+            } else if (isArrayLike(newValue)) {
+              veryOldValue = new Array(newValue.length);
+              for (var i = 0; i < newValue.length; i++) {
+                veryOldValue[i] = newValue[i];
+              }
+            } else { // if object
+              veryOldValue = {};
+              for (var key in newValue) {
+                if (hasOwnProperty.call(newValue, key)) {
+                  veryOldValue[key] = newValue[key];
+                }
+              }
+            }
+          }
+        }
+
+        return this.$watch(changeDetector, $watchCollectionAction);
+      },
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$digest
+       * @kind function
+       *
+       * @description
+       * Processes all of the {@link ng.$rootScope.Scope#$watch watchers} of the current scope and
+       * its children. Because a {@link ng.$rootScope.Scope#$watch watcher}'s listener can change
+       * the model, the `$digest()` keeps calling the {@link ng.$rootScope.Scope#$watch watchers}
+       * until no more listeners are firing. This means that it is possible to get into an infinite
+       * loop. This function will throw `'Maximum iteration limit exceeded.'` if the number of
+       * iterations exceeds 10.
+       *
+       * Usually, you don't call `$digest()` directly in
+       * {@link ng.directive:ngController controllers} or in
+       * {@link ng.$compileProvider#directive directives}.
+       * Instead, you should call {@link ng.$rootScope.Scope#$apply $apply()} (typically from within
+       * a {@link ng.$compileProvider#directive directive}), which will force a `$digest()`.
+       *
+       * If you want to be notified whenever `$digest()` is called,
+       * you can register a `watchExpression` function with
+       * {@link ng.$rootScope.Scope#$watch $watch()} with no `listener`.
+       *
+       * In unit tests, you may need to call `$digest()` to simulate the scope life cycle.
+       *
+       * # Example
+       * ```js
+           var scope = ...;
+           scope.name = 'misko';
+           scope.counter = 0;
+
+           expect(scope.counter).toEqual(0);
+           scope.$watch('name', function(newValue, oldValue) {
+             scope.counter = scope.counter + 1;
+           });
+           expect(scope.counter).toEqual(0);
+
+           scope.$digest();
+           // the listener is always called during the first $digest loop after it was registered
+           expect(scope.counter).toEqual(1);
+
+           scope.$digest();
+           // but now it will not be called unless the value changes
+           expect(scope.counter).toEqual(1);
+
+           scope.name = 'adam';
+           scope.$digest();
+           expect(scope.counter).toEqual(2);
+       * ```
+       *
+       */
+      $digest: function() {
+        var watch, value, last,
+            watchers,
+            length,
+            dirty, ttl = TTL,
+            next, current, target = this,
+            watchLog = [],
+            logIdx, logMsg, asyncTask;
+
+        beginPhase('$digest');
+        // Check for changes to browser url that happened in sync before the call to $digest
+        $browser.$$checkUrlChange();
+
+        if (this === $rootScope && applyAsyncId !== null) {
+          // If this is the root scope, and $applyAsync has scheduled a deferred $apply(), then
+          // cancel the scheduled $apply and flush the queue of expressions to be evaluated.
+          $browser.defer.cancel(applyAsyncId);
+          flushApplyAsync();
+        }
+
+        lastDirtyWatch = null;
+
+        do { // "while dirty" loop
+          dirty = false;
+          current = target;
+
+          while (asyncQueue.length) {
+            try {
+              asyncTask = asyncQueue.shift();
+              asyncTask.scope.$eval(asyncTask.expression, asyncTask.locals);
+            } catch (e) {
+              $exceptionHandler(e);
+            }
+            lastDirtyWatch = null;
+          }
+
+          traverseScopesLoop:
+          do { // "traverse the scopes" loop
+            if ((watchers = current.$$watchers)) {
+              // process our watches
+              length = watchers.length;
+              while (length--) {
+                try {
+                  watch = watchers[length];
+                  // Most common watches are on primitives, in which case we can short
+                  // circuit it with === operator, only when === fails do we use .equals
+                  if (watch) {
+                    if ((value = watch.get(current)) !== (last = watch.last) &&
+                        !(watch.eq
+                            ? equals(value, last)
+                            : (typeof value === 'number' && typeof last === 'number'
+                               && isNaN(value) && isNaN(last)))) {
+                      dirty = true;
+                      lastDirtyWatch = watch;
+                      watch.last = watch.eq ? copy(value, null) : value;
+                      watch.fn(value, ((last === initWatchVal) ? value : last), current);
+                      if (ttl < 5) {
+                        logIdx = 4 - ttl;
+                        if (!watchLog[logIdx]) watchLog[logIdx] = [];
+                        watchLog[logIdx].push({
+                          msg: isFunction(watch.exp) ? 'fn: ' + (watch.exp.name || watch.exp.toString()) : watch.exp,
+                          newVal: value,
+                          oldVal: last
+                        });
+                      }
+                    } else if (watch === lastDirtyWatch) {
+                      // If the most recently dirty watcher is now clean, short circuit since the remaining watchers
+                      // have already been tested.
+                      dirty = false;
+                      break traverseScopesLoop;
+                    }
+                  }
+                } catch (e) {
+                  $exceptionHandler(e);
+                }
+              }
+            }
+
+            // Insanity Warning: scope depth-first traversal
+            // yes, this code is a bit crazy, but it works and we have tests to prove it!
+            // this piece should be kept in sync with the traversal in $broadcast
+            if (!(next = (current.$$childHead ||
+                (current !== target && current.$$nextSibling)))) {
+              while (current !== target && !(next = current.$$nextSibling)) {
+                current = current.$parent;
+              }
+            }
+          } while ((current = next));
+
+          // `break traverseScopesLoop;` takes us to here
+
+          if ((dirty || asyncQueue.length) && !(ttl--)) {
+            clearPhase();
+            throw $rootScopeMinErr('infdig',
+                '{0} $digest() iterations reached. Aborting!\n' +
+                'Watchers fired in the last 5 iterations: {1}',
+                TTL, watchLog);
+          }
+
+        } while (dirty || asyncQueue.length);
+
+        clearPhase();
+
+        while (postDigestQueue.length) {
+          try {
+            postDigestQueue.shift()();
+          } catch (e) {
+            $exceptionHandler(e);
+          }
+        }
+      },
+
+
+      /**
+       * @ngdoc event
+       * @name $rootScope.Scope#$destroy
+       * @eventType broadcast on scope being destroyed
+       *
+       * @description
+       * Broadcasted when a scope and its children are being destroyed.
+       *
+       * Note that, in AngularJS, there is also a `$destroy` jQuery event, which can be used to
+       * clean up DOM bindings before an element is removed from the DOM.
+       */
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$destroy
+       * @kind function
+       *
+       * @description
+       * Removes the current scope (and all of its children) from the parent scope. Removal implies
+       * that calls to {@link ng.$rootScope.Scope#$digest $digest()} will no longer
+       * propagate to the current scope and its children. Removal also implies that the current
+       * scope is eligible for garbage collection.
+       *
+       * The `$destroy()` is usually used by directives such as
+       * {@link ng.directive:ngRepeat ngRepeat} for managing the
+       * unrolling of the loop.
+       *
+       * Just before a scope is destroyed, a `$destroy` event is broadcasted on this scope.
+       * Application code can register a `$destroy` event handler that will give it a chance to
+       * perform any necessary cleanup.
+       *
+       * Note that, in AngularJS, there is also a `$destroy` jQuery event, which can be used to
+       * clean up DOM bindings before an element is removed from the DOM.
+       */
+      $destroy: function() {
+        // we can't destroy the root scope or a scope that has been already destroyed
+        if (this.$$destroyed) return;
+        var parent = this.$parent;
+
+        this.$broadcast('$destroy');
+        this.$$destroyed = true;
+        if (this === $rootScope) return;
+
+        for (var eventName in this.$$listenerCount) {
+          decrementListenerCount(this, this.$$listenerCount[eventName], eventName);
+        }
+
+        // sever all the references to parent scopes (after this cleanup, the current scope should
+        // not be retained by any of our references and should be eligible for garbage collection)
+        if (parent.$$childHead == this) parent.$$childHead = this.$$nextSibling;
+        if (parent.$$childTail == this) parent.$$childTail = this.$$prevSibling;
+        if (this.$$prevSibling) this.$$prevSibling.$$nextSibling = this.$$nextSibling;
+        if (this.$$nextSibling) this.$$nextSibling.$$prevSibling = this.$$prevSibling;
+
+        // Disable listeners, watchers and apply/digest methods
+        this.$destroy = this.$digest = this.$apply = this.$evalAsync = this.$applyAsync = noop;
+        this.$on = this.$watch = this.$watchGroup = function() { return noop; };
+        this.$$listeners = {};
+
+        // All of the code below is bogus code that works around V8's memory leak via optimized code
+        // and inline caches.
+        //
+        // see:
+        // - https://code.google.com/p/v8/issues/detail?id=2073#c26
+        // - https://github.com/angular/angular.js/issues/6794#issuecomment-38648909
+        // - https://github.com/angular/angular.js/issues/1313#issuecomment-10378451
+
+        this.$parent = this.$$nextSibling = this.$$prevSibling = this.$$childHead =
+            this.$$childTail = this.$root = this.$$watchers = null;
+      },
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$eval
+       * @kind function
+       *
+       * @description
+       * Executes the `expression` on the current scope and returns the result. Any exceptions in
+       * the expression are propagated (uncaught). This is useful when evaluating Angular
+       * expressions.
+       *
+       * # Example
+       * ```js
+           var scope = ng.$rootScope.Scope();
+           scope.a = 1;
+           scope.b = 2;
+
+           expect(scope.$eval('a+b')).toEqual(3);
+           expect(scope.$eval(function(scope){ return scope.a + scope.b; })).toEqual(3);
+       * ```
+       *
+       * @param {(string|function())=} expression An angular expression to be executed.
+       *
+       *    - `string`: execute using the rules as defined in  {@link guide/expression expression}.
+       *    - `function(scope)`: execute the function with the current `scope` parameter.
+       *
+       * @param {(object)=} locals Local variables object, useful for overriding values in scope.
+       * @returns {*} The result of evaluating the expression.
+       */
+      $eval: function(expr, locals) {
+        return $parse(expr)(this, locals);
+      },
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$evalAsync
+       * @kind function
+       *
+       * @description
+       * Executes the expression on the current scope at a later point in time.
+       *
+       * The `$evalAsync` makes no guarantees as to when the `expression` will be executed, only
+       * that:
+       *
+       *   - it will execute after the function that scheduled the evaluation (preferably before DOM
+       *     rendering).
+       *   - at least one {@link ng.$rootScope.Scope#$digest $digest cycle} will be performed after
+       *     `expression` execution.
+       *
+       * Any exceptions from the execution of the expression are forwarded to the
+       * {@link ng.$exceptionHandler $exceptionHandler} service.
+       *
+       * __Note:__ if this function is called outside of a `$digest` cycle, a new `$digest` cycle
+       * will be scheduled. However, it is encouraged to always call code that changes the model
+       * from within an `$apply` call. That includes code evaluated via `$evalAsync`.
+       *
+       * @param {(string|function())=} expression An angular expression to be executed.
+       *
+       *    - `string`: execute using the rules as defined in {@link guide/expression expression}.
+       *    - `function(scope)`: execute the function with the current `scope` parameter.
+       *
+       * @param {(object)=} locals Local variables object, useful for overriding values in scope.
+       */
+      $evalAsync: function(expr, locals) {
+        // if we are outside of an $digest loop and this is the first time we are scheduling async
+        // task also schedule async auto-flush
+        if (!$rootScope.$$phase && !asyncQueue.length) {
+          $browser.defer(function() {
+            if (asyncQueue.length) {
+              $rootScope.$digest();
+            }
+          });
+        }
+
+        asyncQueue.push({scope: this, expression: expr, locals: locals});
+      },
+
+      $$postDigest: function(fn) {
+        postDigestQueue.push(fn);
+      },
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$apply
+       * @kind function
+       *
+       * @description
+       * `$apply()` is used to execute an expression in angular from outside of the angular
+       * framework. (For example from browser DOM events, setTimeout, XHR or third party libraries).
+       * Because we are calling into the angular framework we need to perform proper scope life
+       * cycle of {@link ng.$exceptionHandler exception handling},
+       * {@link ng.$rootScope.Scope#$digest executing watches}.
+       *
+       * ## Life cycle
+       *
+       * # Pseudo-Code of `$apply()`
+       * ```js
+           function $apply(expr) {
+             try {
+               return $eval(expr);
+             } catch (e) {
+               $exceptionHandler(e);
+             } finally {
+               $root.$digest();
+             }
+           }
+       * ```
+       *
+       *
+       * Scope's `$apply()` method transitions through the following stages:
+       *
+       * 1. The {@link guide/expression expression} is executed using the
+       *    {@link ng.$rootScope.Scope#$eval $eval()} method.
+       * 2. Any exceptions from the execution of the expression are forwarded to the
+       *    {@link ng.$exceptionHandler $exceptionHandler} service.
+       * 3. The {@link ng.$rootScope.Scope#$watch watch} listeners are fired immediately after the
+       *    expression was executed using the {@link ng.$rootScope.Scope#$digest $digest()} method.
+       *
+       *
+       * @param {(string|function())=} exp An angular expression to be executed.
+       *
+       *    - `string`: execute using the rules as defined in {@link guide/expression expression}.
+       *    - `function(scope)`: execute the function with current `scope` parameter.
+       *
+       * @returns {*} The result of evaluating the expression.
+       */
+      $apply: function(expr) {
+        try {
+          beginPhase('$apply');
+          return this.$eval(expr);
+        } catch (e) {
+          $exceptionHandler(e);
+        } finally {
+          clearPhase();
+          try {
+            $rootScope.$digest();
+          } catch (e) {
+            $exceptionHandler(e);
+            throw e;
+          }
+        }
+      },
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$applyAsync
+       * @kind function
+       *
+       * @description
+       * Schedule the invocation of $apply to occur at a later time. The actual time difference
+       * varies across browsers, but is typically around ~10 milliseconds.
+       *
+       * This can be used to queue up multiple expressions which need to be evaluated in the same
+       * digest.
+       *
+       * @param {(string|function())=} exp An angular expression to be executed.
+       *
+       *    - `string`: execute using the rules as defined in {@link guide/expression expression}.
+       *    - `function(scope)`: execute the function with current `scope` parameter.
+       */
+      $applyAsync: function(expr) {
+        var scope = this;
+        expr && applyAsyncQueue.push($applyAsyncExpression);
+        scheduleApplyAsync();
+
+        function $applyAsyncExpression() {
+          scope.$eval(expr);
+        }
+      },
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$on
+       * @kind function
+       *
+       * @description
+       * Listens on events of a given type. See {@link ng.$rootScope.Scope#$emit $emit} for
+       * discussion of event life cycle.
+       *
+       * The event listener function format is: `function(event, args...)`. The `event` object
+       * passed into the listener has the following attributes:
+       *
+       *   - `targetScope` - `{Scope}`: the scope on which the event was `$emit`-ed or
+       *     `$broadcast`-ed.
+       *   - `currentScope` - `{Scope}`: the scope that is currently handling the event. Once the
+       *     event propagates through the scope hierarchy, this property is set to null.
+       *   - `name` - `{string}`: name of the event.
+       *   - `stopPropagation` - `{function=}`: calling `stopPropagation` function will cancel
+       *     further event propagation (available only for events that were `$emit`-ed).
+       *   - `preventDefault` - `{function}`: calling `preventDefault` sets `defaultPrevented` flag
+       *     to true.
+       *   - `defaultPrevented` - `{boolean}`: true if `preventDefault` was called.
+       *
+       * @param {string} name Event name to listen on.
+       * @param {function(event, ...args)} listener Function to call when the event is emitted.
+       * @returns {function()} Returns a deregistration function for this listener.
+       */
+      $on: function(name, listener) {
+        var namedListeners = this.$$listeners[name];
+        if (!namedListeners) {
+          this.$$listeners[name] = namedListeners = [];
+        }
+        namedListeners.push(listener);
+
+        var current = this;
+        do {
+          if (!current.$$listenerCount[name]) {
+            current.$$listenerCount[name] = 0;
+          }
+          current.$$listenerCount[name]++;
+        } while ((current = current.$parent));
+
+        var self = this;
+        return function() {
+          var indexOfListener = namedListeners.indexOf(listener);
+          if (indexOfListener !== -1) {
+            namedListeners[indexOfListener] = null;
+            decrementListenerCount(self, 1, name);
+          }
+        };
+      },
+
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$emit
+       * @kind function
+       *
+       * @description
+       * Dispatches an event `name` upwards through the scope hierarchy notifying the
+       * registered {@link ng.$rootScope.Scope#$on} listeners.
+       *
+       * The event life cycle starts at the scope on which `$emit` was called. All
+       * {@link ng.$rootScope.Scope#$on listeners} listening for `name` event on this scope get
+       * notified. Afterwards, the event traverses upwards toward the root scope and calls all
+       * registered listeners along the way. The event will stop propagating if one of the listeners
+       * cancels it.
+       *
+       * Any exception emitted from the {@link ng.$rootScope.Scope#$on listeners} will be passed
+       * onto the {@link ng.$exceptionHandler $exceptionHandler} service.
+       *
+       * @param {string} name Event name to emit.
+       * @param {...*} args Optional one or more arguments which will be passed onto the event listeners.
+       * @return {Object} Event object (see {@link ng.$rootScope.Scope#$on}).
+       */
+      $emit: function(name, args) {
+        var empty = [],
+            namedListeners,
+            scope = this,
+            stopPropagation = false,
+            event = {
+              name: name,
+              targetScope: scope,
+              stopPropagation: function() {stopPropagation = true;},
+              preventDefault: function() {
+                event.defaultPrevented = true;
+              },
+              defaultPrevented: false
+            },
+            listenerArgs = concat([event], arguments, 1),
+            i, length;
+
+        do {
+          namedListeners = scope.$$listeners[name] || empty;
+          event.currentScope = scope;
+          for (i = 0, length = namedListeners.length; i < length; i++) {
+
+            // if listeners were deregistered, defragment the array
+            if (!namedListeners[i]) {
+              namedListeners.splice(i, 1);
+              i--;
+              length--;
+              continue;
+            }
+            try {
+              //allow all listeners attached to the current scope to run
+              namedListeners[i].apply(null, listenerArgs);
+            } catch (e) {
+              $exceptionHandler(e);
+            }
+          }
+          //if any listener on the current scope stops propagation, prevent bubbling
+          if (stopPropagation) {
+            event.currentScope = null;
+            return event;
+          }
+          //traverse upwards
+          scope = scope.$parent;
+        } while (scope);
+
+        event.currentScope = null;
+
+        return event;
+      },
+
+
+      /**
+       * @ngdoc method
+       * @name $rootScope.Scope#$broadcast
+       * @kind function
+       *
+       * @description
+       * Dispatches an event `name` downwards to all child scopes (and their children) notifying the
+       * registered {@link ng.$rootScope.Scope#$on} listeners.
+       *
+       * The event life cycle starts at the scope on which `$broadcast` was called. All
+       * {@link ng.$rootScope.Scope#$on listeners} listening for `name` event on this scope get
+       * notified. Afterwards, the event propagates to all direct and indirect scopes of the current
+       * scope and calls all registered listeners along the way. The event cannot be canceled.
+       *
+       * Any exception emitted from the {@link ng.$rootScope.Scope#$on listeners} will be passed
+       * onto the {@link ng.$exceptionHandler $exceptionHandler} service.
+       *
+       * @param {string} name Event name to broadcast.
+       * @param {...*} args Optional one or more arguments which will be passed onto the event listeners.
+       * @return {Object} Event object, see {@link ng.$rootScope.Scope#$on}
+       */
+      $broadcast: function(name, args) {
+        var target = this,
+            current = target,
+            next = target,
+            event = {
+              name: name,
+              targetScope: target,
+              preventDefault: function() {
+                event.defaultPrevented = true;
+              },
+              defaultPrevented: false
+            };
+
+        if (!target.$$listenerCount[name]) return event;
+
+        var listenerArgs = concat([event], arguments, 1),
+            listeners, i, length;
+
+        //down while you can, then up and next sibling or up and next sibling until back at root
+        while ((current = next)) {
+          event.currentScope = current;
+          listeners = current.$$listeners[name] || [];
+          for (i = 0, length = listeners.length; i < length; i++) {
+            // if listeners were deregistered, defragment the array
+            if (!listeners[i]) {
+              listeners.splice(i, 1);
+              i--;
+              length--;
+              continue;
+            }
+
+            try {
+              listeners[i].apply(null, listenerArgs);
+            } catch (e) {
+              $exceptionHandler(e);
+            }
+          }
+
+          // Insanity Warning: scope depth-first traversal
+          // yes, this code is a bit crazy, but it works and we have tests to prove it!
+          // this piece should be kept in sync with the traversal in $digest
+          // (though it differs due to having the extra check for $$listenerCount)
+          if (!(next = ((current.$$listenerCount[name] && current.$$childHead) ||
+              (current !== target && current.$$nextSibling)))) {
+            while (current !== target && !(next = current.$$nextSibling)) {
+              current = current.$parent;
+            }
+          }
+        }
+
+        event.currentScope = null;
+        return event;
+      }
+    };
+
+    var $rootScope = new Scope();
+
+    //The internal queues. Expose them on the $rootScope for debugging/testing purposes.
+    var asyncQueue = $rootScope.$$asyncQueue = [];
+    var postDigestQueue = $rootScope.$$postDigestQueue = [];
+    var applyAsyncQueue = $rootScope.$$applyAsyncQueue = [];
+
+    return $rootScope;
+
+
+    function beginPhase(phase) {
+      if ($rootScope.$$phase) {
+        throw $rootScopeMinErr('inprog', '{0} already in progress', $rootScope.$$phase);
+      }
+
+      $rootScope.$$phase = phase;
+    }
+
+    function clearPhase() {
+      $rootScope.$$phase = null;
+    }
+
+
+    function decrementListenerCount(current, count, name) {
+      do {
+        current.$$listenerCount[name] -= count;
+
+        if (current.$$listenerCount[name] === 0) {
+          delete current.$$listenerCount[name];
+        }
+      } while ((current = current.$parent));
+    }
+
+    /**
+     * function used as an initial value for watchers.
+     * because it's unique we can easily tell it apart from other values
+     */
+    function initWatchVal() {}
+
+    function flushApplyAsync() {
+      while (applyAsyncQueue.length) {
+        try {
+          applyAsyncQueue.shift()();
+        } catch (e) {
+          $exceptionHandler(e);
+        }
+      }
+      applyAsyncId = null;
+    }
+
+    function scheduleApplyAsync() {
+      if (applyAsyncId === null) {
+        applyAsyncId = $browser.defer(function() {
+          $rootScope.$apply(flushApplyAsync);
+        });
+      }
+    }
+  }];
+}
+
+/**
+ * @description
+ * Private service to sanitize uris for links and images. Used by $compile and $sanitize.
+ */
+function $$SanitizeUriProvider() {
+  var aHrefSanitizationWhitelist = /^\s*(https?|ftp|mailto|tel|file):/,
+    imgSrcSanitizationWhitelist = /^\s*((https?|ftp|file|blob):|data:image\/)/;
+
+  /**
+   * @description
+   * Retrieves or overrides the default regular expression that is used for whitelisting of safe
+   * urls during a[href] sanitization.
+   *
+   * The sanitization is a security measure aimed at prevent XSS attacks via html links.
+   *
+   * Any url about to be assigned to a[href] via data-binding is first normalized and turned into
+   * an absolute url. Afterwards, the url is matched against the `aHrefSanitizationWhitelist`
+   * regular expression. If a match is found, the original url is written into the dom. Otherwise,
+   * the absolute url is prefixed with `'unsafe:'` string and only then is it written into the DOM.
+   *
+   * @param {RegExp=} regexp New regexp to whitelist urls with.
+   * @returns {RegExp|ng.$compileProvider} Current RegExp if called without value or self for
+   *    chaining otherwise.
+   */
+  this.aHrefSanitizationWhitelist = function(regexp) {
+    if (isDefined(regexp)) {
+      aHrefSanitizationWhitelist = regexp;
+      return this;
+    }
+    return aHrefSanitizationWhitelist;
+  };
+
+
+  /**
+   * @description
+   * Retrieves or overrides the default regular expression that is used for whitelisting of safe
+   * urls during img[src] sanitization.
+   *
+   * The sanitization is a security measure aimed at prevent XSS attacks via html links.
+   *
+   * Any url about to be assigned to img[src] via data-binding is first normalized and turned into
+   * an absolute url. Afterwards, the url is matched against the `imgSrcSanitizationWhitelist`
+   * regular expression. If a match is found, the original url is written into the dom. Otherwise,
+   * the absolute url is prefixed with `'unsafe:'` string and only then is it written into the DOM.
+   *
+   * @param {RegExp=} regexp New regexp to whitelist urls with.
+   * @returns {RegExp|ng.$compileProvider} Current RegExp if called without value or self for
+   *    chaining otherwise.
+   */
+  this.imgSrcSanitizationWhitelist = function(regexp) {
+    if (isDefined(regexp)) {
+      imgSrcSanitizationWhitelist = regexp;
+      return this;
+    }
+    return imgSrcSanitizationWhitelist;
+  };
+
+  this.$get = function() {
+    return function sanitizeUri(uri, isImage) {
+      var regex = isImage ? imgSrcSanitizationWhitelist : aHrefSanitizationWhitelist;
+      var normalizedVal;
+      normalizedVal = urlResolve(uri).href;
+      if (normalizedVal !== '' && !normalizedVal.match(regex)) {
+        return 'unsafe:' + normalizedVal;
+      }
+      return uri;
+    };
+  };
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ *     Any commits to this file should be reviewed with security in mind.  *
+ *   Changes to this file can potentially create security vulnerabilities. *
+ *          An approval from 2 Core members with history of modifying      *
+ *                         this file is required.                          *
+ *                                                                         *
+ *  Does the change somehow allow for arbitrary javascript to be executed? *
+ *    Or allows for someone to change the prototype of built-in objects?   *
+ *     Or gives undesired access to variables likes document or window?    *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+var $sceMinErr = minErr('$sce');
+
+var SCE_CONTEXTS = {
+  HTML: 'html',
+  CSS: 'css',
+  URL: 'url',
+  // RESOURCE_URL is a subtype of URL used in contexts where a privileged resource is sourced from a
+  // url.  (e.g. ng-include, script src, templateUrl)
+  RESOURCE_URL: 'resourceUrl',
+  JS: 'js'
+};
+
+// Helper functions follow.
+
+function adjustMatcher(matcher) {
+  if (matcher === 'self') {
+    return matcher;
+  } else if (isString(matcher)) {
+    // Strings match exactly except for 2 wildcards - '*' and '**'.
+    // '*' matches any character except those from the set ':/.?&'.
+    // '**' matches any character (like .* in a RegExp).
+    // More than 2 *'s raises an error as it's ill defined.
+    if (matcher.indexOf('***') > -1) {
+      throw $sceMinErr('iwcard',
+          'Illegal sequence *** in string matcher.  String: {0}', matcher);
+    }
+    matcher = escapeForRegexp(matcher).
+                  replace('\\*\\*', '.*').
+                  replace('\\*', '[^:/.?&;]*');
+    return new RegExp('^' + matcher + '$');
+  } else if (isRegExp(matcher)) {
+    // The only other type of matcher allowed is a Regexp.
+    // Match entire URL / disallow partial matches.
+    // Flags are reset (i.e. no global, ignoreCase or multiline)
+    return new RegExp('^' + matcher.source + '$');
+  } else {
+    throw $sceMinErr('imatcher',
+        'Matchers may only be "self", string patterns or RegExp objects');
+  }
+}
+
+
+function adjustMatchers(matchers) {
+  var adjustedMatchers = [];
+  if (isDefined(matchers)) {
+    forEach(matchers, function(matcher) {
+      adjustedMatchers.push(adjustMatcher(matcher));
+    });
+  }
+  return adjustedMatchers;
+}
+
+
+/**
+ * @ngdoc service
+ * @name $sceDelegate
+ * @kind function
+ *
+ * @description
+ *
+ * `$sceDelegate` is a service that is used by the `$sce` service to provide {@link ng.$sce Strict
+ * Contextual Escaping (SCE)} services to AngularJS.
+ *
+ * Typically, you would configure or override the {@link ng.$sceDelegate $sceDelegate} instead of
+ * the `$sce` service to customize the way Strict Contextual Escaping works in AngularJS.  This is
+ * because, while the `$sce` provides numerous shorthand methods, etc., you really only need to
+ * override 3 core functions (`trustAs`, `getTrusted` and `valueOf`) to replace the way things
+ * work because `$sce` delegates to `$sceDelegate` for these operations.
+ *
+ * Refer {@link ng.$sceDelegateProvider $sceDelegateProvider} to configure this service.
+ *
+ * The default instance of `$sceDelegate` should work out of the box with little pain.  While you
+ * can override it completely to change the behavior of `$sce`, the common case would
+ * involve configuring the {@link ng.$sceDelegateProvider $sceDelegateProvider} instead by setting
+ * your own whitelists and blacklists for trusting URLs used for loading AngularJS resources such as
+ * templates.  Refer {@link ng.$sceDelegateProvider#resourceUrlWhitelist
+ * $sceDelegateProvider.resourceUrlWhitelist} and {@link
+ * ng.$sceDelegateProvider#resourceUrlBlacklist $sceDelegateProvider.resourceUrlBlacklist}
+ */
+
+/**
+ * @ngdoc provider
+ * @name $sceDelegateProvider
+ * @description
+ *
+ * The `$sceDelegateProvider` provider allows developers to configure the {@link ng.$sceDelegate
+ * $sceDelegate} service.  This allows one to get/set the whitelists and blacklists used to ensure
+ * that the URLs used for sourcing Angular templates are safe.  Refer {@link
+ * ng.$sceDelegateProvider#resourceUrlWhitelist $sceDelegateProvider.resourceUrlWhitelist} and
+ * {@link ng.$sceDelegateProvider#resourceUrlBlacklist $sceDelegateProvider.resourceUrlBlacklist}
+ *
+ * For the general details about this service in Angular, read the main page for {@link ng.$sce
+ * Strict Contextual Escaping (SCE)}.
+ *
+ * **Example**:  Consider the following case. <a name="example"></a>
+ *
+ * - your app is hosted at url `http://myapp.example.com/`
+ * - but some of your templates are hosted on other domains you control such as
+ *   `http://srv01.assets.example.com/`,  `http://srv02.assets.example.com/`, etc.
+ * - and you have an open redirect at `http://myapp.example.com/clickThru?...`.
+ *
+ * Here is what a secure configuration for this scenario might look like:
+ *
+ * ```
+ *  angular.module('myApp', []).config(function($sceDelegateProvider) {
+ *    $sceDelegateProvider.resourceUrlWhitelist([
+ *      // Allow same origin resource loads.
+ *      'self',
+ *      // Allow loading from our assets domain.  Notice the difference between * and **.
+ *      'http://srv*.assets.example.com/**'
+ *    ]);
+ *
+ *    // The blacklist overrides the whitelist so the open redirect here is blocked.
+ *    $sceDelegateProvider.resourceUrlBlacklist([
+ *      'http://myapp.example.com/clickThru**'
+ *    ]);
+ *  });
+ * ```
+ */
+
+function $SceDelegateProvider() {
+  this.SCE_CONTEXTS = SCE_CONTEXTS;
+
+  // Resource URLs can also be trusted by policy.
+  var resourceUrlWhitelist = ['self'],
+      resourceUrlBlacklist = [];
+
+  /**
+   * @ngdoc method
+   * @name $sceDelegateProvider#resourceUrlWhitelist
+   * @kind function
+   *
+   * @param {Array=} whitelist When provided, replaces the resourceUrlWhitelist with the value
+   *     provided.  This must be an array or null.  A snapshot of this array is used so further
+   *     changes to the array are ignored.
+   *
+   *     Follow {@link ng.$sce#resourceUrlPatternItem this link} for a description of the items
+   *     allowed in this array.
+   *
+   *     Note: **an empty whitelist array will block all URLs**!
+   *
+   * @return {Array} the currently set whitelist array.
+   *
+   * The **default value** when no whitelist has been explicitly set is `['self']` allowing only
+   * same origin resource requests.
+   *
+   * @description
+   * Sets/Gets the whitelist of trusted resource URLs.
+   */
+  this.resourceUrlWhitelist = function(value) {
+    if (arguments.length) {
+      resourceUrlWhitelist = adjustMatchers(value);
+    }
+    return resourceUrlWhitelist;
+  };
+
+  /**
+   * @ngdoc method
+   * @name $sceDelegateProvider#resourceUrlBlacklist
+   * @kind function
+   *
+   * @param {Array=} blacklist When provided, replaces the resourceUrlBlacklist with the value
+   *     provided.  This must be an array or null.  A snapshot of this array is used so further
+   *     changes to the array are ignored.
+   *
+   *     Follow {@link ng.$sce#resourceUrlPatternItem this link} for a description of the items
+   *     allowed in this array.
+   *
+   *     The typical usage for the blacklist is to **block
+   *     [open redirects](http://cwe.mitre.org/data/definitions/601.html)** served by your domain as
+   *     these would otherwise be trusted but actually return content from the redirected domain.
+   *
+   *     Finally, **the blacklist overrides the whitelist** and has the final say.
+   *
+   * @return {Array} the currently set blacklist array.
+   *
+   * The **default value** when no whitelist has been explicitly set is the empty array (i.e. there
+   * is no blacklist.)
+   *
+   * @description
+   * Sets/Gets the blacklist of trusted resource URLs.
+   */
+
+  this.resourceUrlBlacklist = function(value) {
+    if (arguments.length) {
+      resourceUrlBlacklist = adjustMatchers(value);
+    }
+    return resourceUrlBlacklist;
+  };
+
+  this.$get = ['$injector', function($injector) {
+
+    var htmlSanitizer = function htmlSanitizer(html) {
+      throw $sceMinErr('unsafe', 'Attempting to use an unsafe value in a safe context.');
+    };
+
+    if ($injector.has('$sanitize')) {
+      htmlSanitizer = $injector.get('$sanitize');
+    }
+
+
+    function matchUrl(matcher, parsedUrl) {
+      if (matcher === 'self') {
+        return urlIsSameOrigin(parsedUrl);
+      } else {
+        // definitely a regex.  See adjustMatchers()
+        return !!matcher.exec(parsedUrl.href);
+      }
+    }
+
+    function isResourceUrlAllowedByPolicy(url) {
+      var parsedUrl = urlResolve(url.toString());
+      var i, n, allowed = false;
+      // Ensure that at least one item from the whitelist allows this url.
+      for (i = 0, n = resourceUrlWhitelist.length; i < n; i++) {
+        if (matchUrl(resourceUrlWhitelist[i], parsedUrl)) {
+          allowed = true;
+          break;
+        }
+      }
+      if (allowed) {
+        // Ensure that no item from the blacklist blocked this url.
+        for (i = 0, n = resourceUrlBlacklist.length; i < n; i++) {
+          if (matchUrl(resourceUrlBlacklist[i], parsedUrl)) {
+            allowed = false;
+            break;
+          }
+        }
+      }
+      return allowed;
+    }
+
+    function generateHolderType(Base) {
+      var holderType = function TrustedValueHolderType(trustedValue) {
+        this.$$unwrapTrustedValue = function() {
+          return trustedValue;
+        };
+      };
+      if (Base) {
+        holderType.prototype = new Base();
+      }
+      holderType.prototype.valueOf = function sceValueOf() {
+        return this.$$unwrapTrustedValue();
+      };
+      holderType.prototype.toString = function sceToString() {
+        return this.$$unwrapTrustedValue().toString();
+      };
+      return holderType;
+    }
+
+    var trustedValueHolderBase = generateHolderType(),
+        byType = {};
+
+    byType[SCE_CONTEXTS.HTML] = generateHolderType(trustedValueHolderBase);
+    byType[SCE_CONTEXTS.CSS] = generateHolderType(trustedValueHolderBase);
+    byType[SCE_CONTEXTS.URL] = generateHolderType(trustedValueHolderBase);
+    byType[SCE_CONTEXTS.JS] = generateHolderType(trustedValueHolderBase);
+    byType[SCE_CONTEXTS.RESOURCE_URL] = generateHolderType(byType[SCE_CONTEXTS.URL]);
+
+    /**
+     * @ngdoc method
+     * @name $sceDelegate#trustAs
+     *
+     * @description
+     * Returns an object that is trusted by angular for use in specified strict
+     * contextual escaping contexts (such as ng-bind-html, ng-include, any src
+     * attribute interpolation, any dom event binding attribute interpolation
+     * such as for onclick,  etc.) that uses the provided value.
+     * See {@link ng.$sce $sce} for enabling strict contextual escaping.
+     *
+     * @param {string} type The kind of context in which this value is safe for use.  e.g. url,
+     *   resourceUrl, html, js and css.
+     * @param {*} value The value that that should be considered trusted/safe.
+     * @returns {*} A value that can be used to stand in for the provided `value` in places
+     * where Angular expects a $sce.trustAs() return value.
+     */
+    function trustAs(type, trustedValue) {
+      var Constructor = (byType.hasOwnProperty(type) ? byType[type] : null);
+      if (!Constructor) {
+        throw $sceMinErr('icontext',
+            'Attempted to trust a value in invalid context. Context: {0}; Value: {1}',
+            type, trustedValue);
+      }
+      if (trustedValue === null || trustedValue === undefined || trustedValue === '') {
+        return trustedValue;
+      }
+      // All the current contexts in SCE_CONTEXTS happen to be strings.  In order to avoid trusting
+      // mutable objects, we ensure here that the value passed in is actually a string.
+      if (typeof trustedValue !== 'string') {
+        throw $sceMinErr('itype',
+            'Attempted to trust a non-string value in a content requiring a string: Context: {0}',
+            type);
+      }
+      return new Constructor(trustedValue);
+    }
+
+    /**
+     * @ngdoc method
+     * @name $sceDelegate#valueOf
+     *
+     * @description
+     * If the passed parameter had been returned by a prior call to {@link ng.$sceDelegate#trustAs
+     * `$sceDelegate.trustAs`}, returns the value that had been passed to {@link
+     * ng.$sceDelegate#trustAs `$sceDelegate.trustAs`}.
+     *
+     * If the passed parameter is not a value that had been returned by {@link
+     * ng.$sceDelegate#trustAs `$sceDelegate.trustAs`}, returns it as-is.
+     *
+     * @param {*} value The result of a prior {@link ng.$sceDelegate#trustAs `$sceDelegate.trustAs`}
+     *      call or anything else.
+     * @returns {*} The `value` that was originally provided to {@link ng.$sceDelegate#trustAs
+     *     `$sceDelegate.trustAs`} if `value` is the result of such a call.  Otherwise, returns
+     *     `value` unchanged.
+     */
+    function valueOf(maybeTrusted) {
+      if (maybeTrusted instanceof trustedValueHolderBase) {
+        return maybeTrusted.$$unwrapTrustedValue();
+      } else {
+        return maybeTrusted;
+      }
+    }
+
+    /**
+     * @ngdoc method
+     * @name $sceDelegate#getTrusted
+     *
+     * @description
+     * Takes the result of a {@link ng.$sceDelegate#trustAs `$sceDelegate.trustAs`} call and
+     * returns the originally supplied value if the queried context type is a supertype of the
+     * created type.  If this condition isn't satisfied, throws an exception.
+     *
+     * @param {string} type The kind of context in which this value is to be used.
+     * @param {*} maybeTrusted The result of a prior {@link ng.$sceDelegate#trustAs
+     *     `$sceDelegate.trustAs`} call.
+     * @returns {*} The value the was originally provided to {@link ng.$sceDelegate#trustAs
+     *     `$sceDelegate.trustAs`} if valid in this context.  Otherwise, throws an exception.
+     */
+    function getTrusted(type, maybeTrusted) {
+      if (maybeTrusted === null || maybeTrusted === undefined || maybeTrusted === '') {
+        return maybeTrusted;
+      }
+      var constructor = (byType.hasOwnProperty(type) ? byType[type] : null);
+      if (constructor && maybeTrusted instanceof constructor) {
+        return maybeTrusted.$$unwrapTrustedValue();
+      }
+      // If we get here, then we may only take one of two actions.
+      // 1. sanitize the value for the requested type, or
+      // 2. throw an exception.
+      if (type === SCE_CONTEXTS.RESOURCE_URL) {
+        if (isResourceUrlAllowedByPolicy(maybeTrusted)) {
+          return maybeTrusted;
+        } else {
+          throw $sceMinErr('insecurl',
+              'Blocked loading resource from url not allowed by $sceDelegate policy.  URL: {0}',
+              maybeTrusted.toString());
+        }
+      } else if (type === SCE_CONTEXTS.HTML) {
+        return htmlSanitizer(maybeTrusted);
+      }
+      throw $sceMinErr('unsafe', 'Attempting to use an unsafe value in a safe context.');
+    }
+
+    return { trustAs: trustAs,
+             getTrusted: getTrusted,
+             valueOf: valueOf };
+  }];
+}
+
+
+/**
+ * @ngdoc provider
+ * @name $sceProvider
+ * @description
+ *
+ * The $sceProvider provider allows developers to configure the {@link ng.$sce $sce} service.
+ * -   enable/disable Strict Contextual Escaping (SCE) in a module
+ * -   override the default implementation with a custom delegate
+ *
+ * Read more about {@link ng.$sce Strict Contextual Escaping (SCE)}.
+ */
+
+/* jshint maxlen: false*/
+
+/**
+ * @ngdoc service
+ * @name $sce
+ * @kind function
+ *
+ * @description
+ *
+ * `$sce` is a service that provides Strict Contextual Escaping services to AngularJS.
+ *
+ * # Strict Contextual Escaping
+ *
+ * Strict Contextual Escaping (SCE) is a mode in which AngularJS requires bindings in certain
+ * contexts to result in a value that is marked as safe to use for that context.  One example of
+ * such a context is binding arbitrary html controlled by the user via `ng-bind-html`.  We refer
+ * to these contexts as privileged or SCE contexts.
+ *
+ * As of version 1.2, Angular ships with SCE enabled by default.
+ *
+ * Note:  When enabled (the default), IE<11 in quirks mode is not supported.  In this mode, IE<11 allow
+ * one to execute arbitrary javascript by the use of the expression() syntax.  Refer
+ * <http://blogs.msdn.com/b/ie/archive/2008/10/16/ending-expressions.aspx> to learn more about them.
+ * You can ensure your document is in standards mode and not quirks mode by adding `<!doctype html>`
+ * to the top of your HTML document.
+ *
+ * SCE assists in writing code in way that (a) is secure by default and (b) makes auditing for
+ * security vulnerabilities such as XSS, clickjacking, etc. a lot easier.
+ *
+ * Here's an example of a binding in a privileged context:
+ *
+ * ```
+ * <input ng-model="userHtml">
+ * <div ng-bind-html="userHtml"></div>
+ * ```
+ *
+ * Notice that `ng-bind-html` is bound to `userHtml` controlled by the user.  With SCE
+ * disabled, this application allows the user to render arbitrary HTML into the DIV.
+ * In a more realistic example, one may be rendering user comments, blog articles, etc. via
+ * bindings.  (HTML is just one example of a context where rendering user controlled input creates
+ * security vulnerabilities.)
+ *
+ * For the case of HTML, you might use a library, either on the client side, or on the server side,
+ * to sanitize unsafe HTML before binding to the value and rendering it in the document.
+ *
+ * How would you ensure that every place that used these types of bindings was bound to a value that
+ * was sanitized by your library (or returned as safe for rendering by your server?)  How can you
+ * ensure that you didn't accidentally delete the line that sanitized the value, or renamed some
+ * properties/fields and forgot to update the binding to the sanitized value?
+ *
+ * To be secure by default, you want to ensure that any such bindings are disallowed unless you can
+ * determine that something explicitly says it's safe to use a value for binding in that
+ * context.  You can then audit your code (a simple grep would do) to ensure that this is only done
+ * for those values that you can easily tell are safe - because they were received from your server,
+ * sanitized by your library, etc.  You can organize your codebase to help with this - perhaps
+ * allowing only the files in a specific directory to do this.  Ensuring that the internal API
+ * exposed by that code doesn't markup arbitrary values as safe then becomes a more manageable task.
+ *
+ * In the case of AngularJS' SCE service, one uses {@link ng.$sce#trustAs $sce.trustAs}
+ * (and shorthand methods such as {@link ng.$sce#trustAsHtml $sce.trustAsHtml}, etc.) to
+ * obtain values that will be accepted by SCE / privileged contexts.
+ *
+ *
+ * ## How does it work?
+ *
+ * In privileged contexts, directives and code will bind to the result of {@link ng.$sce#getTrusted
+ * $sce.getTrusted(context, value)} rather than to the value directly.  Directives use {@link
+ * ng.$sce#parseAs $sce.parseAs} rather than `$parse` to watch attribute bindings, which performs the
+ * {@link ng.$sce#getTrusted $sce.getTrusted} behind the scenes on non-constant literals.
+ *
+ * As an example, {@link ng.directive:ngBindHtml ngBindHtml} uses {@link
+ * ng.$sce#parseAsHtml $sce.parseAsHtml(binding expression)}.  Here's the actual code (slightly
+ * simplified):
+ *
+ * ```
+ * var ngBindHtmlDirective = ['$sce', function($sce) {
+ *   return function(scope, element, attr) {
+ *     scope.$watch($sce.parseAsHtml(attr.ngBindHtml), function(value) {
+ *       element.html(value || '');
+ *     });
+ *   };
+ * }];
+ * ```
+ *
+ * ## Impact on loading templates
+ *
+ * This applies both to the {@link ng.directive:ngInclude `ng-include`} directive as well as
+ * `templateUrl`'s specified by {@link guide/directive directives}.
+ *
+ * By default, Angular only loads templates from the same domain and protocol as the application
+ * document.  This is done by calling {@link ng.$sce#getTrustedResourceUrl
+ * $sce.getTrustedResourceUrl} on the template URL.  To load templates from other domains and/or
+ * protocols, you may either either {@link ng.$sceDelegateProvider#resourceUrlWhitelist whitelist
+ * them} or {@link ng.$sce#trustAsResourceUrl wrap it} into a trusted value.
+ *
+ * *Please note*:
+ * The browser's
+ * [Same Origin Policy](https://code.google.com/p/browsersec/wiki/Part2#Same-origin_policy_for_XMLHttpRequest)
+ * and [Cross-Origin Resource Sharing (CORS)](http://www.w3.org/TR/cors/)
+ * policy apply in addition to this and may further restrict whether the template is successfully
+ * loaded.  This means that without the right CORS policy, loading templates from a different domain
+ * won't work on all browsers.  Also, loading templates from `file://` URL does not work on some
+ * browsers.
+ *
+ * ## This feels like too much overhead
+ *
+ * It's important to remember that SCE only applies to interpolation expressions.
+ *
+ * If your expressions are constant literals, they're automatically trusted and you don't need to
+ * call `$sce.trustAs` on them (remember to include the `ngSanitize` module) (e.g.
+ * `<div ng-bind-html="'<b>implicitly trusted</b>'"></div>`) just works.
+ *
+ * Additionally, `a[href]` and `img[src]` automatically sanitize their URLs and do not pass them
+ * through {@link ng.$sce#getTrusted $sce.getTrusted}.  SCE doesn't play a role here.
+ *
+ * The included {@link ng.$sceDelegate $sceDelegate} comes with sane defaults to allow you to load
+ * templates in `ng-include` from your application's domain without having to even know about SCE.
+ * It blocks loading templates from other domains or loading templates over http from an https
+ * served document.  You can change these by setting your own custom {@link
+ * ng.$sceDelegateProvider#resourceUrlWhitelist whitelists} and {@link
+ * ng.$sceDelegateProvider#resourceUrlBlacklist blacklists} for matching such URLs.
+ *
+ * This significantly reduces the overhead.  It is far easier to pay the small overhead and have an
+ * application that's secure and can be audited to verify that with much more ease than bolting
+ * security onto an application later.
+ *
+ * <a name="contexts"></a>
+ * ## What trusted context types are supported?
+ *
+ * | Context             | Notes          |
+ * |---------------------|----------------|
+ * | `$sce.HTML`         | For HTML that's safe to source into the application.  The {@link ng.directive:ngBindHtml ngBindHtml} directive uses this context for bindings. If an unsafe value is encountered and the {@link ngSanitize $sanitize} module is present this will sanitize the value instead of throwing an error. |
+ * | `$sce.CSS`          | For CSS that's safe to source into the application.  Currently unused.  Feel free to use it in your own directives. |
+ * | `$sce.URL`          | For URLs that are safe to follow as links.  Currently unused (`<a href=` and `<img src=` sanitize their urls and don't constitute an SCE context. |
+ * | `$sce.RESOURCE_URL` | For URLs that are not only safe to follow as links, but whose contents are also safe to include in your application.  Examples include `ng-include`, `src` / `ngSrc` bindings for tags other than `IMG` (e.g. `IFRAME`, `OBJECT`, etc.)  <br><br>Note that `$sce.RESOURCE_URL` makes a stronger statement about the URL than `$sce.URL` does and therefore contexts requiring values trusted for `$sce.RESOURCE_URL` can be used anywhere that values trusted for `$sce.URL` are required. |
+ * | `$sce.JS`           | For JavaScript that is safe to execute in your application's context.  Currently unused.  Feel free to use it in your own directives. |
+ *
+ * ## Format of items in {@link ng.$sceDelegateProvider#resourceUrlWhitelist resourceUrlWhitelist}/{@link ng.$sceDelegateProvider#resourceUrlBlacklist Blacklist} <a name="resourceUrlPatternItem"></a>
+ *
+ *  Each element in these arrays must be one of the following:
+ *
+ *  - **'self'**
+ *    - The special **string**, `'self'`, can be used to match against all URLs of the **same
+ *      domain** as the application document using the **same protocol**.
+ *  - **String** (except the special value `'self'`)
+ *    - The string is matched against the full *normalized / absolute URL* of the resource
+ *      being tested (substring matches are not good enough.)
+ *    - There are exactly **two wildcard sequences** - `*` and `**`.  All other characters
+ *      match themselves.
+ *    - `*`: matches zero or more occurrences of any character other than one of the following 6
+ *      characters: '`:`', '`/`', '`.`', '`?`', '`&`' and ';'.  It's a useful wildcard for use
+ *      in a whitelist.
+ *    - `**`: matches zero or more occurrences of *any* character.  As such, it's not
+ *      appropriate for use in a scheme, domain, etc. as it would match too much.  (e.g.
+ *      http://**.example.com/ would match http://evil.com/?ignore=.example.com/ and that might
+ *      not have been the intention.)  Its usage at the very end of the path is ok.  (e.g.
+ *      http://foo.example.com/templates/**).
+ *  - **RegExp** (*see caveat below*)
+ *    - *Caveat*:  While regular expressions are powerful and offer great flexibility,  their syntax
+ *      (and all the inevitable escaping) makes them *harder to maintain*.  It's easy to
+ *      accidentally introduce a bug when one updates a complex expression (imho, all regexes should
+ *      have good test coverage).  For instance, the use of `.` in the regex is correct only in a
+ *      small number of cases.  A `.` character in the regex used when matching the scheme or a
+ *      subdomain could be matched against a `:` or literal `.` that was likely not intended.   It
+ *      is highly recommended to use the string patterns and only fall back to regular expressions
+ *      as a last resort.
+ *    - The regular expression must be an instance of RegExp (i.e. not a string.)  It is
+ *      matched against the **entire** *normalized / absolute URL* of the resource being tested
+ *      (even when the RegExp did not have the `^` and `$` codes.)  In addition, any flags
+ *      present on the RegExp (such as multiline, global, ignoreCase) are ignored.
+ *    - If you are generating your JavaScript from some other templating engine (not
+ *      recommended, e.g. in issue [#4006](https://github.com/angular/angular.js/issues/4006)),
+ *      remember to escape your regular expression (and be aware that you might need more than
+ *      one level of escaping depending on your templating engine and the way you interpolated
+ *      the value.)  Do make use of your platform's escaping mechanism as it might be good
+ *      enough before coding your own.  E.g. Ruby has
+ *      [Regexp.escape(str)](http://www.ruby-doc.org/core-2.0.0/Regexp.html#method-c-escape)
+ *      and Python has [re.escape](http://docs.python.org/library/re.html#re.escape).
+ *      Javascript lacks a similar built in function for escaping.  Take a look at Google
+ *      Closure library's [goog.string.regExpEscape(s)](
+ *      http://docs.closure-library.googlecode.com/git/closure_goog_string_string.js.source.html#line962).
+ *
+ * Refer {@link ng.$sceDelegateProvider $sceDelegateProvider} for an example.
+ *
+ * ## Show me an example using SCE.
+ *
+ * <example module="mySceApp" deps="angular-sanitize.js">
+ * <file name="index.html">
+ *   <div ng-controller="AppController as myCtrl">
+ *     <i ng-bind-html="myCtrl.explicitlyTrustedHtml" id="explicitlyTrustedHtml"></i><br><br>
+ *     <b>User comments</b><br>
+ *     By default, HTML that isn't explicitly trusted (e.g. Alice's comment) is sanitized when
+ *     $sanitize is available.  If $sanitize isn't available, this results in an error instead of an
+ *     exploit.
+ *     <div class="well">
+ *       <div ng-repeat="userComment in myCtrl.userComments">
+ *         <b>{{userComment.name}}</b>:
+ *         <span ng-bind-html="userComment.htmlComment" class="htmlComment"></span>
+ *         <br>
+ *       </div>
+ *     </div>
+ *   </div>
+ * </file>
+ *
+ * <file name="script.js">
+ *   angular.module('mySceApp', ['ngSanitize'])
+ *     .controller('AppController', ['$http', '$templateCache', '$sce',
+ *       function($http, $templateCache, $sce) {
+ *         var self = this;
+ *         $http.get("test_data.json", {cache: $templateCache}).success(function(userComments) {
+ *           self.userComments = userComments;
+ *         });
+ *         self.explicitlyTrustedHtml = $sce.trustAsHtml(
+ *             '<span onmouseover="this.textContent=&quot;Explicitly trusted HTML bypasses ' +
+ *             'sanitization.&quot;">Hover over this text.</span>');
+ *       }]);
+ * </file>
+ *
+ * <file name="test_data.json">
+ * [
+ *   { "name": "Alice",
+ *     "htmlComment":
+ *         "<span onmouseover='this.textContent=\"PWN3D!\"'>Is <i>anyone</i> reading this?</span>"
+ *   },
+ *   { "name": "Bob",
+ *     "htmlComment": "<i>Yes!</i>  Am I the only other one?"
+ *   }
+ * ]
+ * </file>
+ *
+ * <file name="protractor.js" type="protractor">
+ *   describe('SCE doc demo', function() {
+ *     it('should sanitize untrusted values', function() {
+ *       expect(element.all(by.css('.htmlComment')).first().getInnerHtml())
+ *           .toBe('<span>Is <i>anyone</i> reading this?</span>');
+ *     });
+ *
+ *     it('should NOT sanitize explicitly trusted values', function() {
+ *       expect(element(by.id('explicitlyTrustedHtml')).getInnerHtml()).toBe(
+ *           '<span onmouseover="this.textContent=&quot;Explicitly trusted HTML bypasses ' +
+ *           'sanitization.&quot;">Hover over this text.</span>');
+ *     });
+ *   });
+ * </file>
+ * </example>
+ *
+ *
+ *
+ * ## Can I disable SCE completely?
+ *
+ * Yes, you can.  However, this is strongly discouraged.  SCE gives you a lot of security benefits
+ * for little coding overhead.  It will be much harder to take an SCE disabled application and
+ * either secure it on your own or enable SCE at a later stage.  It might make sense to disable SCE
+ * for cases where you have a lot of existing code that was written before SCE was introduced and
+ * you're migrating them a module at a time.
+ *
+ * That said, here's how you can completely disable SCE:
+ *
+ * ```
+ * angular.module('myAppWithSceDisabledmyApp', []).config(function($sceProvider) {
+ *   // Completely disable SCE.  For demonstration purposes only!
+ *   // Do not use in new projects.
+ *   $sceProvider.enabled(false);
+ * });
+ * ```
+ *
+ */
+/* jshint maxlen: 100 */
+
+function $SceProvider() {
+  var enabled = true;
+
+  /**
+   * @ngdoc method
+   * @name $sceProvider#enabled
+   * @kind function
+   *
+   * @param {boolean=} value If provided, then enables/disables SCE.
+   * @return {boolean} true if SCE is enabled, false otherwise.
+   *
+   * @description
+   * Enables/disables SCE and returns the current value.
+   */
+  this.enabled = function(value) {
+    if (arguments.length) {
+      enabled = !!value;
+    }
+    return enabled;
+  };
+
+
+  /* Design notes on the default implementation for SCE.
+   *
+   * The API contract for the SCE delegate
+   * -------------------------------------
+   * The SCE delegate object must provide the following 3 methods:
+   *
+   * - trustAs(contextEnum, value)
+   *     This method is used to tell the SCE service that the provided value is OK to use in the
+   *     contexts specified by contextEnum.  It must return an object that will be accepted by
+   *     getTrusted() for a compatible contextEnum and return this value.
+   *
+   * - valueOf(value)
+   *     For values that were not produced by trustAs(), return them as is.  For values that were
+   *     produced by trustAs(), return the corresponding input value to trustAs.  Basically, if
+   *     trustAs is wrapping the given values into some type, this operation unwraps it when given
+   *     such a value.
+   *
+   * - getTrusted(contextEnum, value)
+   *     This function should return the a value that is safe to use in the context specified by
+   *     contextEnum or throw and exception otherwise.
+   *
+   * NOTE: This contract deliberately does NOT state that values returned by trustAs() must be
+   * opaque or wrapped in some holder object.  That happens to be an implementation detail.  For
+   * instance, an implementation could maintain a registry of all trusted objects by context.  In
+   * such a case, trustAs() would return the same object that was passed in.  getTrusted() would
+   * return the same object passed in if it was found in the registry under a compatible context or
+   * throw an exception otherwise.  An implementation might only wrap values some of the time based
+   * on some criteria.  getTrusted() might return a value and not throw an exception for special
+   * constants or objects even if not wrapped.  All such implementations fulfill this contract.
+   *
+   *
+   * A note on the inheritance model for SCE contexts
+   * ------------------------------------------------
+   * I've used inheritance and made RESOURCE_URL wrapped types a subtype of URL wrapped types.  This
+   * is purely an implementation details.
+   *
+   * The contract is simply this:
+   *
+   *     getTrusted($sce.RESOURCE_URL, value) succeeding implies that getTrusted($sce.URL, value)
+   *     will also succeed.
+   *
+   * Inheritance happens to capture this in a natural way.  In some future, we
+   * may not use inheritance anymore.  That is OK because no code outside of
+   * sce.js and sceSpecs.js would need to be aware of this detail.
+   */
+
+  this.$get = ['$parse', '$sceDelegate', function(
+                $parse,   $sceDelegate) {
+    // Prereq: Ensure that we're not running in IE<11 quirks mode.  In that mode, IE < 11 allow
+    // the "expression(javascript expression)" syntax which is insecure.
+    if (enabled && msie < 8) {
+      throw $sceMinErr('iequirks',
+        'Strict Contextual Escaping does not support Internet Explorer version < 11 in quirks ' +
+        'mode.  You can fix this by adding the text <!doctype html> to the top of your HTML ' +
+        'document.  See http://docs.angularjs.org/api/ng.$sce for more information.');
+    }
+
+    var sce = shallowCopy(SCE_CONTEXTS);
+
+    /**
+     * @ngdoc method
+     * @name $sce#isEnabled
+     * @kind function
+     *
+     * @return {Boolean} true if SCE is enabled, false otherwise.  If you want to set the value, you
+     * have to do it at module config time on {@link ng.$sceProvider $sceProvider}.
+     *
+     * @description
+     * Returns a boolean indicating if SCE is enabled.
+     */
+    sce.isEnabled = function() {
+      return enabled;
+    };
+    sce.trustAs = $sceDelegate.trustAs;
+    sce.getTrusted = $sceDelegate.getTrusted;
+    sce.valueOf = $sceDelegate.valueOf;
+
+    if (!enabled) {
+      sce.trustAs = sce.getTrusted = function(type, value) { return value; };
+      sce.valueOf = identity;
+    }
+
+    /**
+     * @ngdoc method
+     * @name $sce#parseAs
+     *
+     * @description
+     * Converts Angular {@link guide/expression expression} into a function.  This is like {@link
+     * ng.$parse $parse} and is identical when the expression is a literal constant.  Otherwise, it
+     * wraps the expression in a call to {@link ng.$sce#getTrusted $sce.getTrusted(*type*,
+     * *result*)}
+     *
+     * @param {string} type The kind of SCE context in which this result will be used.
+     * @param {string} expression String expression to compile.
+     * @returns {function(context, locals)} a function which represents the compiled expression:
+     *
+     *    * `context` – `{object}` – an object against which any expressions embedded in the strings
+     *      are evaluated against (typically a scope object).
+     *    * `locals` – `{object=}` – local variables context object, useful for overriding values in
+     *      `context`.
+     */
+    sce.parseAs = function sceParseAs(type, expr) {
+      var parsed = $parse(expr);
+      if (parsed.literal && parsed.constant) {
+        return parsed;
+      } else {
+        return $parse(expr, function(value) {
+          return sce.getTrusted(type, value);
+        });
+      }
+    };
+
+    /**
+     * @ngdoc method
+     * @name $sce#trustAs
+     *
+     * @description
+     * Delegates to {@link ng.$sceDelegate#trustAs `$sceDelegate.trustAs`}.  As such,
+     * returns an object that is trusted by angular for use in specified strict contextual
+     * escaping contexts (such as ng-bind-html, ng-include, any src attribute
+     * interpolation, any dom event binding attribute interpolation such as for onclick,  etc.)
+     * that uses the provided value.  See * {@link ng.$sce $sce} for enabling strict contextual
+     * escaping.
+     *
+     * @param {string} type The kind of context in which this value is safe for use.  e.g. url,
+     *   resource_url, html, js and css.
+     * @param {*} value The value that that should be considered trusted/safe.
+     * @returns {*} A value that can be used to stand in for the provided `value` in places
+     * where Angular expects a $sce.trustAs() return value.
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#trustAsHtml
+     *
+     * @description
+     * Shorthand method.  `$sce.trustAsHtml(value)` →
+     *     {@link ng.$sceDelegate#trustAs `$sceDelegate.trustAs($sce.HTML, value)`}
+     *
+     * @param {*} value The value to trustAs.
+     * @returns {*} An object that can be passed to {@link ng.$sce#getTrustedHtml
+     *     $sce.getTrustedHtml(value)} to obtain the original value.  (privileged directives
+     *     only accept expressions that are either literal constants or are the
+     *     return value of {@link ng.$sce#trustAs $sce.trustAs}.)
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#trustAsUrl
+     *
+     * @description
+     * Shorthand method.  `$sce.trustAsUrl(value)` →
+     *     {@link ng.$sceDelegate#trustAs `$sceDelegate.trustAs($sce.URL, value)`}
+     *
+     * @param {*} value The value to trustAs.
+     * @returns {*} An object that can be passed to {@link ng.$sce#getTrustedUrl
+     *     $sce.getTrustedUrl(value)} to obtain the original value.  (privileged directives
+     *     only accept expressions that are either literal constants or are the
+     *     return value of {@link ng.$sce#trustAs $sce.trustAs}.)
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#trustAsResourceUrl
+     *
+     * @description
+     * Shorthand method.  `$sce.trustAsResourceUrl(value)` →
+     *     {@link ng.$sceDelegate#trustAs `$sceDelegate.trustAs($sce.RESOURCE_URL, value)`}
+     *
+     * @param {*} value The value to trustAs.
+     * @returns {*} An object that can be passed to {@link ng.$sce#getTrustedResourceUrl
+     *     $sce.getTrustedResourceUrl(value)} to obtain the original value.  (privileged directives
+     *     only accept expressions that are either literal constants or are the return
+     *     value of {@link ng.$sce#trustAs $sce.trustAs}.)
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#trustAsJs
+     *
+     * @description
+     * Shorthand method.  `$sce.trustAsJs(value)` →
+     *     {@link ng.$sceDelegate#trustAs `$sceDelegate.trustAs($sce.JS, value)`}
+     *
+     * @param {*} value The value to trustAs.
+     * @returns {*} An object that can be passed to {@link ng.$sce#getTrustedJs
+     *     $sce.getTrustedJs(value)} to obtain the original value.  (privileged directives
+     *     only accept expressions that are either literal constants or are the
+     *     return value of {@link ng.$sce#trustAs $sce.trustAs}.)
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#getTrusted
+     *
+     * @description
+     * Delegates to {@link ng.$sceDelegate#getTrusted `$sceDelegate.getTrusted`}.  As such,
+     * takes the result of a {@link ng.$sce#trustAs `$sce.trustAs`}() call and returns the
+     * originally supplied value if the queried context type is a supertype of the created type.
+     * If this condition isn't satisfied, throws an exception.
+     *
+     * @param {string} type The kind of context in which this value is to be used.
+     * @param {*} maybeTrusted The result of a prior {@link ng.$sce#trustAs `$sce.trustAs`}
+     *                         call.
+     * @returns {*} The value the was originally provided to
+     *              {@link ng.$sce#trustAs `$sce.trustAs`} if valid in this context.
+     *              Otherwise, throws an exception.
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#getTrustedHtml
+     *
+     * @description
+     * Shorthand method.  `$sce.getTrustedHtml(value)` →
+     *     {@link ng.$sceDelegate#getTrusted `$sceDelegate.getTrusted($sce.HTML, value)`}
+     *
+     * @param {*} value The value to pass to `$sce.getTrusted`.
+     * @returns {*} The return value of `$sce.getTrusted($sce.HTML, value)`
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#getTrustedCss
+     *
+     * @description
+     * Shorthand method.  `$sce.getTrustedCss(value)` →
+     *     {@link ng.$sceDelegate#getTrusted `$sceDelegate.getTrusted($sce.CSS, value)`}
+     *
+     * @param {*} value The value to pass to `$sce.getTrusted`.
+     * @returns {*} The return value of `$sce.getTrusted($sce.CSS, value)`
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#getTrustedUrl
+     *
+     * @description
+     * Shorthand method.  `$sce.getTrustedUrl(value)` →
+     *     {@link ng.$sceDelegate#getTrusted `$sceDelegate.getTrusted($sce.URL, value)`}
+     *
+     * @param {*} value The value to pass to `$sce.getTrusted`.
+     * @returns {*} The return value of `$sce.getTrusted($sce.URL, value)`
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#getTrustedResourceUrl
+     *
+     * @description
+     * Shorthand method.  `$sce.getTrustedResourceUrl(value)` →
+     *     {@link ng.$sceDelegate#getTrusted `$sceDelegate.getTrusted($sce.RESOURCE_URL, value)`}
+     *
+     * @param {*} value The value to pass to `$sceDelegate.getTrusted`.
+     * @returns {*} The return value of `$sce.getTrusted($sce.RESOURCE_URL, value)`
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#getTrustedJs
+     *
+     * @description
+     * Shorthand method.  `$sce.getTrustedJs(value)` →
+     *     {@link ng.$sceDelegate#getTrusted `$sceDelegate.getTrusted($sce.JS, value)`}
+     *
+     * @param {*} value The value to pass to `$sce.getTrusted`.
+     * @returns {*} The return value of `$sce.getTrusted($sce.JS, value)`
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#parseAsHtml
+     *
+     * @description
+     * Shorthand method.  `$sce.parseAsHtml(expression string)` →
+     *     {@link ng.$sce#parseAs `$sce.parseAs($sce.HTML, value)`}
+     *
+     * @param {string} expression String expression to compile.
+     * @returns {function(context, locals)} a function which represents the compiled expression:
+     *
+     *    * `context` – `{object}` – an object against which any expressions embedded in the strings
+     *      are evaluated against (typically a scope object).
+     *    * `locals` – `{object=}` – local variables context object, useful for overriding values in
+     *      `context`.
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#parseAsCss
+     *
+     * @description
+     * Shorthand method.  `$sce.parseAsCss(value)` →
+     *     {@link ng.$sce#parseAs `$sce.parseAs($sce.CSS, value)`}
+     *
+     * @param {string} expression String expression to compile.
+     * @returns {function(context, locals)} a function which represents the compiled expression:
+     *
+     *    * `context` – `{object}` – an object against which any expressions embedded in the strings
+     *      are evaluated against (typically a scope object).
+     *    * `locals` – `{object=}` – local variables context object, useful for overriding values in
+     *      `context`.
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#parseAsUrl
+     *
+     * @description
+     * Shorthand method.  `$sce.parseAsUrl(value)` →
+     *     {@link ng.$sce#parseAs `$sce.parseAs($sce.URL, value)`}
+     *
+     * @param {string} expression String expression to compile.
+     * @returns {function(context, locals)} a function which represents the compiled expression:
+     *
+     *    * `context` – `{object}` – an object against which any expressions embedded in the strings
+     *      are evaluated against (typically a scope object).
+     *    * `locals` – `{object=}` – local variables context object, useful for overriding values in
+     *      `context`.
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#parseAsResourceUrl
+     *
+     * @description
+     * Shorthand method.  `$sce.parseAsResourceUrl(value)` →
+     *     {@link ng.$sce#parseAs `$sce.parseAs($sce.RESOURCE_URL, value)`}
+     *
+     * @param {string} expression String expression to compile.
+     * @returns {function(context, locals)} a function which represents the compiled expression:
+     *
+     *    * `context` – `{object}` – an object against which any expressions embedded in the strings
+     *      are evaluated against (typically a scope object).
+     *    * `locals` – `{object=}` – local variables context object, useful for overriding values in
+     *      `context`.
+     */
+
+    /**
+     * @ngdoc method
+     * @name $sce#parseAsJs
+     *
+     * @description
+     * Shorthand method.  `$sce.parseAsJs(value)` →
+     *     {@link ng.$sce#parseAs `$sce.parseAs($sce.JS, value)`}
+     *
+     * @param {string} expression String expression to compile.
+     * @returns {function(context, locals)} a function which represents the compiled expression:
+     *
+     *    * `context` – `{object}` – an object against which any expressions embedded in the strings
+     *      are evaluated against (typically a scope object).
+     *    * `locals` – `{object=}` – local variables context object, useful for overriding values in
+     *      `context`.
+     */
+
+    // Shorthand delegations.
+    var parse = sce.parseAs,
+        getTrusted = sce.getTrusted,
+        trustAs = sce.trustAs;
+
+    forEach(SCE_CONTEXTS, function(enumValue, name) {
+      var lName = lowercase(name);
+      sce[camelCase("parse_as_" + lName)] = function(expr) {
+        return parse(enumValue, expr);
+      };
+      sce[camelCase("get_trusted_" + lName)] = function(value) {
+        return getTrusted(enumValue, value);
+      };
+      sce[camelCase("trust_as_" + lName)] = function(value) {
+        return trustAs(enumValue, value);
+      };
+    });
+
+    return sce;
+  }];
+}
+
+/**
+ * !!! This is an undocumented "private" service !!!
+ *
+ * @name $sniffer
+ * @requires $window
+ * @requires $document
+ *
+ * @property {boolean} history Does the browser support html5 history api ?
+ * @property {boolean} transitions Does the browser support CSS transition events ?
+ * @property {boolean} animations Does the browser support CSS animation events ?
+ *
+ * @description
+ * This is very simple implementation of testing browser's features.
+ */
+function $SnifferProvider() {
+  this.$get = ['$window', '$document', function($window, $document) {
+    var eventSupport = {},
+        android =
+          int((/android (\d+)/.exec(lowercase(($window.navigator || {}).userAgent)) || [])[1]),
+        boxee = /Boxee/i.test(($window.navigator || {}).userAgent),
+        document = $document[0] || {},
+        vendorPrefix,
+        vendorRegex = /^(Moz|webkit|ms)(?=[A-Z])/,
+        bodyStyle = document.body && document.body.style,
+        transitions = false,
+        animations = false,
+        match;
+
+    if (bodyStyle) {
+      for (var prop in bodyStyle) {
+        if (match = vendorRegex.exec(prop)) {
+          vendorPrefix = match[0];
+          vendorPrefix = vendorPrefix.substr(0, 1).toUpperCase() + vendorPrefix.substr(1);
+          break;
+        }
+      }
+
+      if (!vendorPrefix) {
+        vendorPrefix = ('WebkitOpacity' in bodyStyle) && 'webkit';
+      }
+
+      transitions = !!(('transition' in bodyStyle) || (vendorPrefix + 'Transition' in bodyStyle));
+      animations  = !!(('animation' in bodyStyle) || (vendorPrefix + 'Animation' in bodyStyle));
+
+      if (android && (!transitions ||  !animations)) {
+        transitions = isString(document.body.style.webkitTransition);
+        animations = isString(document.body.style.webkitAnimation);
+      }
+    }
+
+
+    return {
+      // Android has history.pushState, but it does not update location correctly
+      // so let's not use the history API at all.
+      // http://code.google.com/p/android/issues/detail?id=17471
+      // https://github.com/angular/angular.js/issues/904
+
+      // older webkit browser (533.9) on Boxee box has exactly the same problem as Android has
+      // so let's not use the history API also
+      // We are purposefully using `!(android < 4)` to cover the case when `android` is undefined
+      // jshint -W018
+      history: !!($window.history && $window.history.pushState && !(android < 4) && !boxee),
+      // jshint +W018
+      hasEvent: function(event) {
+        // IE9 implements 'input' event it's so fubared that we rather pretend that it doesn't have
+        // it. In particular the event is not fired when backspace or delete key are pressed or
+        // when cut operation is performed.
+        // IE10+ implements 'input' event but it erroneously fires under various situations,
+        // e.g. when placeholder changes, or a form is focused.
+        if (event === 'input' && msie <= 11) return false;
+
+        if (isUndefined(eventSupport[event])) {
+          var divElm = document.createElement('div');
+          eventSupport[event] = 'on' + event in divElm;
+        }
+
+        return eventSupport[event];
+      },
+      csp: csp(),
+      vendorPrefix: vendorPrefix,
+      transitions: transitions,
+      animations: animations,
+      android: android
+    };
+  }];
+}
+
+var $compileMinErr = minErr('$compile');
+
+/**
+ * @ngdoc service
+ * @name $templateRequest
+ *
+ * @description
+ * The `$templateRequest` service runs security checks then downloads the provided template using
+ * `$http` and, upon success, stores the contents inside of `$templateCache`. If the HTTP request
+ * fails or the response data of the HTTP request is empty, a `$compile` error will be thrown (the
+ * exception can be thwarted by setting the 2nd parameter of the function to true). Note that the
+ * contents of `$templateCache` are trusted, so the call to `$sce.getTrustedUrl(tpl)` is omitted
+ * when `tpl` is of type string and `$templateCache` has the matching entry.
+ *
+ * @param {string|TrustedResourceUrl} tpl The HTTP request template URL
+ * @param {boolean=} ignoreRequestError Whether or not to ignore the exception when the request fails or the template is empty
+ *
+ * @return {Promise} the HTTP Promise for the given.
+ *
+ * @property {number} totalPendingRequests total amount of pending template requests being downloaded.
+ */
+function $TemplateRequestProvider() {
+  this.$get = ['$templateCache', '$http', '$q', '$sce', function($templateCache, $http, $q, $sce) {
+    function handleRequestFn(tpl, ignoreRequestError) {
+      handleRequestFn.totalPendingRequests++;
+
+      // We consider the template cache holds only trusted templates, so
+      // there's no need to go through whitelisting again for keys that already
+      // are included in there. This also makes Angular accept any script
+      // directive, no matter its name. However, we still need to unwrap trusted
+      // types.
+      if (!isString(tpl) || !$templateCache.get(tpl)) {
+        tpl = $sce.getTrustedResourceUrl(tpl);
+      }
+
+      var transformResponse = $http.defaults && $http.defaults.transformResponse;
+
+      if (isArray(transformResponse)) {
+        transformResponse = transformResponse.filter(function(transformer) {
+          return transformer !== defaultHttpResponseTransform;
+        });
+      } else if (transformResponse === defaultHttpResponseTransform) {
+        transformResponse = null;
+      }
+
+      var httpOptions = {
+        cache: $templateCache,
+        transformResponse: transformResponse
+      };
+
+      return $http.get(tpl, httpOptions)
+        ['finally'](function() {
+          handleRequestFn.totalPendingRequests--;
+        })
+        .then(function(response) {
+          return response.data;
+        }, handleError);
+
+      function handleError(resp) {
+        if (!ignoreRequestError) {
+          throw $compileMinErr('tpload', 'Failed to load template: {0}', tpl);
+        }
+        return $q.reject(resp);
+      }
+    }
+
+    handleRequestFn.totalPendingRequests = 0;
+
+    return handleRequestFn;
+  }];
+}
+
+function $$TestabilityProvider() {
+  this.$get = ['$rootScope', '$browser', '$location',
+       function($rootScope,   $browser,   $location) {
+
+    /**
+     * @name $testability
+     *
+     * @description
+     * The private $$testability service provides a collection of methods for use when debugging
+     * or by automated test and debugging tools.
+     */
+    var testability = {};
+
+    /**
+     * @name $$testability#findBindings
+     *
+     * @description
+     * Returns an array of elements that are bound (via ng-bind or {{}})
+     * to expressions matching the input.
+     *
+     * @param {Element} element The element root to search from.
+     * @param {string} expression The binding expression to match.
+     * @param {boolean} opt_exactMatch If true, only returns exact matches
+     *     for the expression. Filters and whitespace are ignored.
+     */
+    testability.findBindings = function(element, expression, opt_exactMatch) {
+      var bindings = element.getElementsByClassName('ng-binding');
+      var matches = [];
+      forEach(bindings, function(binding) {
+        var dataBinding = angular.element(binding).data('$binding');
+        if (dataBinding) {
+          forEach(dataBinding, function(bindingName) {
+            if (opt_exactMatch) {
+              var matcher = new RegExp('(^|\\s)' + escapeForRegexp(expression) + '(\\s|\\||$)');
+              if (matcher.test(bindingName)) {
+                matches.push(binding);
+              }
+            } else {
+              if (bindingName.indexOf(expression) != -1) {
+                matches.push(binding);
+              }
+            }
+          });
+        }
+      });
+      return matches;
+    };
+
+    /**
+     * @name $$testability#findModels
+     *
+     * @description
+     * Returns an array of elements that are two-way found via ng-model to
+     * expressions matching the input.
+     *
+     * @param {Element} element The element root to search from.
+     * @param {string} expression The model expression to match.
+     * @param {boolean} opt_exactMatch If true, only returns exact matches
+     *     for the expression.
+     */
+    testability.findModels = function(element, expression, opt_exactMatch) {
+      var prefixes = ['ng-', 'data-ng-', 'ng\\:'];
+      for (var p = 0; p < prefixes.length; ++p) {
+        var attributeEquals = opt_exactMatch ? '=' : '*=';
+        var selector = '[' + prefixes[p] + 'model' + attributeEquals + '"' + expression + '"]';
+        var elements = element.querySelectorAll(selector);
+        if (elements.length) {
+          return elements;
+        }
+      }
+    };
+
+    /**
+     * @name $$testability#getLocation
+     *
+     * @description
+     * Shortcut for getting the location in a browser agnostic way. Returns
+     *     the path, search, and hash. (e.g. /path?a=b#hash)
+     */
+    testability.getLocation = function() {
+      return $location.url();
+    };
+
+    /**
+     * @name $$testability#setLocation
+     *
+     * @description
+     * Shortcut for navigating to a location without doing a full page reload.
+     *
+     * @param {string} url The location url (path, search and hash,
+     *     e.g. /path?a=b#hash) to go to.
+     */
+    testability.setLocation = function(url) {
+      if (url !== $location.url()) {
+        $location.url(url);
+        $rootScope.$digest();
+      }
+    };
+
+    /**
+     * @name $$testability#whenStable
+     *
+     * @description
+     * Calls the callback when $timeout and $http requests are completed.
+     *
+     * @param {function} callback
+     */
+    testability.whenStable = function(callback) {
+      $browser.notifyWhenNoOutstandingRequests(callback);
+    };
+
+    return testability;
+  }];
+}
+
+function $TimeoutProvider() {
+  this.$get = ['$rootScope', '$browser', '$q', '$$q', '$exceptionHandler',
+       function($rootScope,   $browser,   $q,   $$q,   $exceptionHandler) {
+    var deferreds = {};
+
+
+     /**
+      * @ngdoc service
+      * @name $timeout
+      *
+      * @description
+      * Angular's wrapper for `window.setTimeout`. The `fn` function is wrapped into a try/catch
+      * block and delegates any exceptions to
+      * {@link ng.$exceptionHandler $exceptionHandler} service.
+      *
+      * The return value of registering a timeout function is a promise, which will be resolved when
+      * the timeout is reached and the timeout function is executed.
+      *
+      * To cancel a timeout request, call `$timeout.cancel(promise)`.
+      *
+      * In tests you can use {@link ngMock.$timeout `$timeout.flush()`} to
+      * synchronously flush the queue of deferred functions.
+      *
+      * @param {function()} fn A function, whose execution should be delayed.
+      * @param {number=} [delay=0] Delay in milliseconds.
+      * @param {boolean=} [invokeApply=true] If set to `false` skips model dirty checking, otherwise
+      *   will invoke `fn` within the {@link ng.$rootScope.Scope#$apply $apply} block.
+      * @returns {Promise} Promise that will be resolved when the timeout is reached. The value this
+      *   promise will be resolved with is the return value of the `fn` function.
+      *
+      */
+    function timeout(fn, delay, invokeApply) {
+      var skipApply = (isDefined(invokeApply) && !invokeApply),
+          deferred = (skipApply ? $$q : $q).defer(),
+          promise = deferred.promise,
+          timeoutId;
+
+      timeoutId = $browser.defer(function() {
+        try {
+          deferred.resolve(fn());
+        } catch (e) {
+          deferred.reject(e);
+          $exceptionHandler(e);
+        }
+        finally {
+          delete deferreds[promise.$$timeoutId];
+        }
+
+        if (!skipApply) $rootScope.$apply();
+      }, delay);
+
+      promise.$$timeoutId = timeoutId;
+      deferreds[timeoutId] = deferred;
+
+      return promise;
+    }
+
+
+     /**
+      * @ngdoc method
+      * @name $timeout#cancel
+      *
+      * @description
+      * Cancels a task associated with the `promise`. As a result of this, the promise will be
+      * resolved with a rejection.
+      *
+      * @param {Promise=} promise Promise returned by the `$timeout` function.
+      * @returns {boolean} Returns `true` if the task hasn't executed yet and was successfully
+      *   canceled.
+      */
+    timeout.cancel = function(promise) {
+      if (promise && promise.$$timeoutId in deferreds) {
+        deferreds[promise.$$timeoutId].reject('canceled');
+        delete deferreds[promise.$$timeoutId];
+        return $browser.defer.cancel(promise.$$timeoutId);
+      }
+      return false;
+    };
+
+    return timeout;
+  }];
+}
+
+// NOTE:  The usage of window and document instead of $window and $document here is
+// deliberate.  This service depends on the specific behavior of anchor nodes created by the
+// browser (resolving and parsing URLs) that is unlikely to be provided by mock objects and
+// cause us to break tests.  In addition, when the browser resolves a URL for XHR, it
+// doesn't know about mocked locations and resolves URLs to the real document - which is
+// exactly the behavior needed here.  There is little value is mocking these out for this
+// service.
+var urlParsingNode = document.createElement("a");
+var originUrl = urlResolve(window.location.href);
+
+
+/**
+ *
+ * Implementation Notes for non-IE browsers
+ * ----------------------------------------
+ * Assigning a URL to the href property of an anchor DOM node, even one attached to the DOM,
+ * results both in the normalizing and parsing of the URL.  Normalizing means that a relative
+ * URL will be resolved into an absolute URL in the context of the application document.
+ * Parsing means that the anchor node's host, hostname, protocol, port, pathname and related
+ * properties are all populated to reflect the normalized URL.  This approach has wide
+ * compatibility - Safari 1+, Mozilla 1+, Opera 7+,e etc.  See
+ * http://www.aptana.com/reference/html/api/HTMLAnchorElement.html
+ *
+ * Implementation Notes for IE
+ * ---------------------------
+ * IE <= 10 normalizes the URL when assigned to the anchor node similar to the other
+ * browsers.  However, the parsed components will not be set if the URL assigned did not specify
+ * them.  (e.g. if you assign a.href = "foo", then a.protocol, a.host, etc. will be empty.)  We
+ * work around that by performing the parsing in a 2nd step by taking a previously normalized
+ * URL (e.g. by assigning to a.href) and assigning it a.href again.  This correctly populates the
+ * properties such as protocol, hostname, port, etc.
+ *
+ * References:
+ *   http://developer.mozilla.org/en-US/docs/Web/API/HTMLAnchorElement
+ *   http://www.aptana.com/reference/html/api/HTMLAnchorElement.html
+ *   http://url.spec.whatwg.org/#urlutils
+ *   https://github.com/angular/angular.js/pull/2902
+ *   http://james.padolsey.com/javascript/parsing-urls-with-the-dom/
+ *
+ * @kind function
+ * @param {string} url The URL to be parsed.
+ * @description Normalizes and parses a URL.
+ * @returns {object} Returns the normalized URL as a dictionary.
+ *
+ *   | member name   | Description    |
+ *   |---------------|----------------|
+ *   | href          | A normalized version of the provided URL if it was not an absolute URL |
+ *   | protocol      | The protocol including the trailing colon                              |
+ *   | host          | The host and port (if the port is non-default) of the normalizedUrl    |
+ *   | search        | The search params, minus the question mark                             |
+ *   | hash          | The hash string, minus the hash symbol
+ *   | hostname      | The hostname
+ *   | port          | The port, without ":"
+ *   | pathname      | The pathname, beginning with "/"
+ *
+ */
+function urlResolve(url) {
+  var href = url;
+
+  if (msie) {
+    // Normalize before parse.  Refer Implementation Notes on why this is
+    // done in two steps on IE.
+    urlParsingNode.setAttribute("href", href);
+    href = urlParsingNode.href;
+  }
+
+  urlParsingNode.setAttribute('href', href);
+
+  // urlParsingNode provides the UrlUtils interface - http://url.spec.whatwg.org/#urlutils
+  return {
+    href: urlParsingNode.href,
+    protocol: urlParsingNode.protocol ? urlParsingNode.protocol.replace(/:$/, '') : '',
+    host: urlParsingNode.host,
+    search: urlParsingNode.search ? urlParsingNode.search.replace(/^\?/, '') : '',
+    hash: urlParsingNode.hash ? urlParsingNode.hash.replace(/^#/, '') : '',
+    hostname: urlParsingNode.hostname,
+    port: urlParsingNode.port,
+    pathname: (urlParsingNode.pathname.charAt(0) === '/')
+      ? urlParsingNode.pathname
+      : '/' + urlParsingNode.pathname
+  };
+}
+
+/**
+ * Parse a request URL and determine whether this is a same-origin request as the application document.
+ *
+ * @param {string|object} requestUrl The url of the request as a string that will be resolved
+ * or a parsed URL object.
+ * @returns {boolean} Whether the request is for the same origin as the application document.
+ */
+function urlIsSameOrigin(requestUrl) {
+  var parsed = (isString(requestUrl)) ? urlResolve(requestUrl) : requestUrl;
+  return (parsed.protocol === originUrl.protocol &&
+          parsed.host === originUrl.host);
+}
+
+/**
+ * @ngdoc service
+ * @name $window
+ *
+ * @description
+ * A reference to the browser's `window` object. While `window`
+ * is globally available in JavaScript, it causes testability problems, because
+ * it is a global variable. In angular we always refer to it through the
+ * `$window` service, so it may be overridden, removed or mocked for testing.
+ *
+ * Expressions, like the one defined for the `ngClick` directive in the example
+ * below, are evaluated with respect to the current scope.  Therefore, there is
+ * no risk of inadvertently coding in a dependency on a global value in such an
+ * expression.
+ *
+ * @example
+   <example module="windowExample">
+     <file name="index.html">
+       <script>
+         angular.module('windowExample', [])
+           .controller('ExampleController', ['$scope', '$window', function($scope, $window) {
+             $scope.greeting = 'Hello, World!';
+             $scope.doGreeting = function(greeting) {
+               $window.alert(greeting);
+             };
+           }]);
+       </script>
+       <div ng-controller="ExampleController">
+         <input type="text" ng-model="greeting" />
+         <button ng-click="doGreeting(greeting)">ALERT</button>
+       </div>
+     </file>
+     <file name="protractor.js" type="protractor">
+      it('should display the greeting in the input box', function() {
+       element(by.model('greeting')).sendKeys('Hello, E2E Tests');
+       // If we click the button it will block the test runner
+       // element(':button').click();
+      });
+     </file>
+   </example>
+ */
+function $WindowProvider() {
+  this.$get = valueFn(window);
+}
+
+/* global currencyFilter: true,
+ dateFilter: true,
+ filterFilter: true,
+ jsonFilter: true,
+ limitToFilter: true,
+ lowercaseFilter: true,
+ numberFilter: true,
+ orderByFilter: true,
+ uppercaseFilter: true,
+ */
+
+/**
+ * @ngdoc provider
+ * @name $filterProvider
+ * @description
+ *
+ * Filters are just functions which transform input to an output. However filters need to be
+ * Dependency Injected. To achieve this a filter definition consists of a factory function which is
+ * annotated with dependencies and is responsible for creating a filter function.
+ *
+ * <div class="alert alert-warning">
+ * **Note:** Filter names must be valid angular {@link expression} identifiers, such as `uppercase` or `orderBy`.
+ * Names with special characters, such as hyphens and dots, are not allowed. If you wish to namespace
+ * your filters, then you can use capitalization (`myappSubsectionFilterx`) or underscores
+ * (`myapp_subsection_filterx`).
+ * </div>
+ *
+ * ```js
+ *   // Filter registration
+ *   function MyModule($provide, $filterProvider) {
+ *     // create a service to demonstrate injection (not always needed)
+ *     $provide.value('greet', function(name){
+ *       return 'Hello ' + name + '!';
+ *     });
+ *
+ *     // register a filter factory which uses the
+ *     // greet service to demonstrate DI.
+ *     $filterProvider.register('greet', function(greet){
+ *       // return the filter function which uses the greet service
+ *       // to generate salutation
+ *       return function(text) {
+ *         // filters need to be forgiving so check input validity
+ *         return text && greet(text) || text;
+ *       };
+ *     });
+ *   }
+ * ```
+ *
+ * The filter function is registered with the `$injector` under the filter name suffix with
+ * `Filter`.
+ *
+ * ```js
+ *   it('should be the same instance', inject(
+ *     function($filterProvider) {
+ *       $filterProvider.register('reverse', function(){
+ *         return ...;
+ *       });
+ *     },
+ *     function($filter, reverseFilter) {
+ *       expect($filter('reverse')).toBe(reverseFilter);
+ *     });
+ * ```
+ *
+ *
+ * For more information about how angular filters work, and how to create your own filters, see
+ * {@link guide/filter Filters} in the Angular Developer Guide.
+ */
+
+/**
+ * @ngdoc service
+ * @name $filter
+ * @kind function
+ * @description
+ * Filters are used for formatting data displayed to the user.
+ *
+ * The general syntax in templates is as follows:
+ *
+ *         {{ expression [| filter_name[:parameter_value] ... ] }}
+ *
+ * @param {String} name Name of the filter function to retrieve
+ * @return {Function} the filter function
+ * @example
+   <example name="$filter" module="filterExample">
+     <file name="index.html">
+       <div ng-controller="MainCtrl">
+        <h3>{{ originalText }}</h3>
+        <h3>{{ filteredText }}</h3>
+       </div>
+     </file>
+
+     <file name="script.js">
+      angular.module('filterExample', [])
+      .controller('MainCtrl', function($scope, $filter) {
+        $scope.originalText = 'hello';
+        $scope.filteredText = $filter('uppercase')($scope.originalText);
+      });
+     </file>
+   </example>
+  */
+$FilterProvider.$inject = ['$provide'];
+function $FilterProvider($provide) {
+  var suffix = 'Filter';
+
+  /**
+   * @ngdoc method
+   * @name $filterProvider#register
+   * @param {string|Object} name Name of the filter function, or an object map of filters where
+   *    the keys are the filter names and the values are the filter factories.
+   *
+   *    <div class="alert alert-warning">
+   *    **Note:** Filter names must be valid angular {@link expression} identifiers, such as `uppercase` or `orderBy`.
+   *    Names with special characters, such as hyphens and dots, are not allowed. If you wish to namespace
+   *    your filters, then you can use capitalization (`myappSubsectionFilterx`) or underscores
+   *    (`myapp_subsection_filterx`).
+   *    </div>
+   * @returns {Object} Registered filter instance, or if a map of filters was provided then a map
+   *    of the registered filter instances.
+   */
+  function register(name, factory) {
+    if (isObject(name)) {
+      var filters = {};
+      forEach(name, function(filter, key) {
+        filters[key] = register(key, filter);
+      });
+      return filters;
+    } else {
+      return $provide.factory(name + suffix, factory);
+    }
+  }
+  this.register = register;
+
+  this.$get = ['$injector', function($injector) {
+    return function(name) {
+      return $injector.get(name + suffix);
+    };
+  }];
+
+  ////////////////////////////////////////
+
+  /* global
+    currencyFilter: false,
+    dateFilter: false,
+    filterFilter: false,
+    jsonFilter: false,
+    limitToFilter: false,
+    lowercaseFilter: false,
+    numberFilter: false,
+    orderByFilter: false,
+    uppercaseFilter: false,
+  */
+
+  register('currency', currencyFilter);
+  register('date', dateFilter);
+  register('filter', filterFilter);
+  register('json', jsonFilter);
+  register('limitTo', limitToFilter);
+  register('lowercase', lowercaseFilter);
+  register('number', numberFilter);
+  register('orderBy', orderByFilter);
+  register('uppercase', uppercaseFilter);
+}
+
+/**
+ * @ngdoc filter
+ * @name filter
+ * @kind function
+ *
+ * @description
+ * Selects a subset of items from `array` and returns it as a new array.
+ *
+ * @param {Array} array The source array.
+ * @param {string|Object|function()} expression The predicate to be used for selecting items from
+ *   `array`.
+ *
+ *   Can be one of:
+ *
+ *   - `string`: The string is used for matching against the contents of the `array`. All strings or
+ *     objects with string properties in `array` that match this string will be returned. This also
+ *     applies to nested object properties.
+ *     The predicate can be negated by prefixing the string with `!`.
+ *
+ *   - `Object`: A pattern object can be used to filter specific properties on objects contained
+ *     by `array`. For example `{name:"M", phone:"1"}` predicate will return an array of items
+ *     which have property `name` containing "M" and property `phone` containing "1". A special
+ *     property name `$` can be used (as in `{$:"text"}`) to accept a match against any
+ *     property of the object or its nested object properties. That's equivalent to the simple
+ *     substring match with a `string` as described above. The predicate can be negated by prefixing
+ *     the string with `!`.
+ *     For example `{name: "!M"}` predicate will return an array of items which have property `name`
+ *     not containing "M".
+ *
+ *     Note that a named property will match properties on the same level only, while the special
+ *     `$` property will match properties on the same level or deeper. E.g. an array item like
+ *     `{name: {first: 'John', last: 'Doe'}}` will **not** be matched by `{name: 'John'}`, but
+ *     **will** be matched by `{$: 'John'}`.
+ *
+ *   - `function(value, index)`: A predicate function can be used to write arbitrary filters. The
+ *     function is called for each element of `array`. The final result is an array of those
+ *     elements that the predicate returned true for.
+ *
+ * @param {function(actual, expected)|true|undefined} comparator Comparator which is used in
+ *     determining if the expected value (from the filter expression) and actual value (from
+ *     the object in the array) should be considered a match.
+ *
+ *   Can be one of:
+ *
+ *   - `function(actual, expected)`:
+ *     The function will be given the object value and the predicate value to compare and
+ *     should return true if both values should be considered equal.
+ *
+ *   - `true`: A shorthand for `function(actual, expected) { return angular.equals(actual, expected)}`.
+ *     This is essentially strict comparison of expected and actual.
+ *
+ *   - `false|undefined`: A short hand for a function which will look for a substring match in case
+ *     insensitive way.
+ *
+ * @example
+   <example>
+     <file name="index.html">
+       <div ng-init="friends = [{name:'John', phone:'555-1276'},
+                                {name:'Mary', phone:'800-BIG-MARY'},
+                                {name:'Mike', phone:'555-4321'},
+                                {name:'Adam', phone:'555-5678'},
+                                {name:'Julie', phone:'555-8765'},
+                                {name:'Juliette', phone:'555-5678'}]"></div>
+
+       Search: <input ng-model="searchText">
+       <table id="searchTextResults">
+         <tr><th>Name</th><th>Phone</th></tr>
+         <tr ng-repeat="friend in friends | filter:searchText">
+           <td>{{friend.name}}</td>
+           <td>{{friend.phone}}</td>
+         </tr>
+       </table>
+       <hr>
+       Any: <input ng-model="search.$"> <br>
+       Name only <input ng-model="search.name"><br>
+       Phone only <input ng-model="search.phone"><br>
+       Equality <input type="checkbox" ng-model="strict"><br>
+       <table id="searchObjResults">
+         <tr><th>Name</th><th>Phone</th></tr>
+         <tr ng-repeat="friendObj in friends | filter:search:strict">
+           <td>{{friendObj.name}}</td>
+           <td>{{friendObj.phone}}</td>
+         </tr>
+       </table>
+     </file>
+     <file name="protractor.js" type="protractor">
+       var expectFriendNames = function(expectedNames, key) {
+         element.all(by.repeater(key + ' in friends').column(key + '.name')).then(function(arr) {
+           arr.forEach(function(wd, i) {
+             expect(wd.getText()).toMatch(expectedNames[i]);
+           });
+         });
+       };
+
+       it('should search across all fields when filtering with a string', function() {
+         var searchText = element(by.model('searchText'));
+         searchText.clear();
+         searchText.sendKeys('m');
+         expectFriendNames(['Mary', 'Mike', 'Adam'], 'friend');
+
+         searchText.clear();
+         searchText.sendKeys('76');
+         expectFriendNames(['John', 'Julie'], 'friend');
+       });
+
+       it('should search in specific fields when filtering with a predicate object', function() {
+         var searchAny = element(by.model('search.$'));
+         searchAny.clear();
+         searchAny.sendKeys('i');
+         expectFriendNames(['Mary', 'Mike', 'Julie', 'Juliette'], 'friendObj');
+       });
+       it('should use a equal comparison when comparator is true', function() {
+         var searchName = element(by.model('search.name'));
+         var strict = element(by.model('strict'));
+         searchName.clear();
+         searchName.sendKeys('Julie');
+         strict.click();
+         expectFriendNames(['Julie'], 'friendObj');
+       });
+     </file>
+   </example>
+ */
+function filterFilter() {
+  return function(array, expression, comparator) {
+    if (!isArray(array)) return array;
+
+    var expressionType = (expression !== null) ? typeof expression : 'null';
+    var predicateFn;
+    var matchAgainstAnyProp;
+
+    switch (expressionType) {
+      case 'function':
+        predicateFn = expression;
+        break;
+      case 'boolean':
+      case 'null':
+      case 'number':
+      case 'string':
+        matchAgainstAnyProp = true;
+        //jshint -W086
+      case 'object':
+        //jshint +W086
+        predicateFn = createPredicateFn(expression, comparator, matchAgainstAnyProp);
+        break;
+      default:
+        return array;
+    }
+
+    return array.filter(predicateFn);
+  };
+}
+
+// Helper functions for `filterFilter`
+function createPredicateFn(expression, comparator, matchAgainstAnyProp) {
+  var shouldMatchPrimitives = isObject(expression) && ('$' in expression);
+  var predicateFn;
+
+  if (comparator === true) {
+    comparator = equals;
+  } else if (!isFunction(comparator)) {
+    comparator = function(actual, expected) {
+      if (isUndefined(actual)) {
+        // No substring matching against `undefined`
+        return false;
+      }
+      if ((actual === null) || (expected === null)) {
+        // No substring matching against `null`; only match against `null`
+        return actual === expected;
+      }
+      if (isObject(actual) || isObject(expected)) {
+        // Prevent an object to be considered equal to a string like `'[object'`
+        return false;
+      }
+
+      actual = lowercase('' + actual);
+      expected = lowercase('' + expected);
+      return actual.indexOf(expected) !== -1;
+    };
+  }
+
+  predicateFn = function(item) {
+    if (shouldMatchPrimitives && !isObject(item)) {
+      return deepCompare(item, expression.$, comparator, false);
+    }
+    return deepCompare(item, expression, comparator, matchAgainstAnyProp);
+  };
+
+  return predicateFn;
+}
+
+function deepCompare(actual, expected, comparator, matchAgainstAnyProp, dontMatchWholeObject) {
+  var actualType = (actual !== null) ? typeof actual : 'null';
+  var expectedType = (expected !== null) ? typeof expected : 'null';
+
+  if ((expectedType === 'string') && (expected.charAt(0) === '!')) {
+    return !deepCompare(actual, expected.substring(1), comparator, matchAgainstAnyProp);
+  } else if (isArray(actual)) {
+    // In case `actual` is an array, consider it a match
+    // if ANY of it's items matches `expected`
+    return actual.some(function(item) {
+      return deepCompare(item, expected, comparator, matchAgainstAnyProp);
+    });
+  }
+
+  switch (actualType) {
+    case 'object':
+      var key;
+      if (matchAgainstAnyProp) {
+        for (key in actual) {
+          if ((key.charAt(0) !== '$') && deepCompare(actual[key], expected, comparator, true)) {
+            return true;
+          }
+        }
+        return dontMatchWholeObject ? false : deepCompare(actual, expected, comparator, false);
+      } else if (expectedType === 'object') {
+        for (key in expected) {
+          var expectedVal = expected[key];
+          if (isFunction(expectedVal) || isUndefined(expectedVal)) {
+            continue;
+          }
+
+          var matchAnyProperty = key === '$';
+          var actualVal = matchAnyProperty ? actual : actual[key];
+          if (!deepCompare(actualVal, expectedVal, comparator, matchAnyProperty, matchAnyProperty)) {
+            return false;
+          }
+        }
+        return true;
+      } else {
+        return comparator(actual, expected);
+      }
+      break;
+    case 'function':
+      return false;
+    default:
+      return comparator(actual, expected);
+  }
+}
+
+/**
+ * @ngdoc filter
+ * @name currency
+ * @kind function
+ *
+ * @description
+ * Formats a number as a currency (ie $1,234.56). When no currency symbol is provided, default
+ * symbol for current locale is used.
+ *
+ * @param {number} amount Input to filter.
+ * @param {string=} symbol Currency symbol or identifier to be displayed.
+ * @param {number=} fractionSize Number of decimal places to round the amount to, defaults to default max fraction size for current locale
+ * @returns {string} Formatted number.
+ *
+ *
+ * @example
+   <example module="currencyExample">
+     <file name="index.html">
+       <script>
+         angular.module('currencyExample', [])
+           .controller('ExampleController', ['$scope', function($scope) {
+             $scope.amount = 1234.56;
+           }]);
+       </script>
+       <div ng-controller="ExampleController">
+         <input type="number" ng-model="amount"> <br>
+         default currency symbol ($): <span id="currency-default">{{amount | currency}}</span><br>
+         custom currency identifier (USD$): <span id="currency-custom">{{amount | currency:"USD$"}}</span>
+         no fractions (0): <span id="currency-no-fractions">{{amount | currency:"USD$":0}}</span>
+       </div>
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should init with 1234.56', function() {
+         expect(element(by.id('currency-default')).getText()).toBe('$1,234.56');
+         expect(element(by.id('currency-custom')).getText()).toBe('USD$1,234.56');
+         expect(element(by.id('currency-no-fractions')).getText()).toBe('USD$1,235');
+       });
+       it('should update', function() {
+         if (browser.params.browser == 'safari') {
+           // Safari does not understand the minus key. See
+           // https://github.com/angular/protractor/issues/481
+           return;
+         }
+         element(by.model('amount')).clear();
+         element(by.model('amount')).sendKeys('-1234');
+         expect(element(by.id('currency-default')).getText()).toBe('($1,234.00)');
+         expect(element(by.id('currency-custom')).getText()).toBe('(USD$1,234.00)');
+         expect(element(by.id('currency-no-fractions')).getText()).toBe('(USD$1,234)');
+       });
+     </file>
+   </example>
+ */
+currencyFilter.$inject = ['$locale'];
+function currencyFilter($locale) {
+  var formats = $locale.NUMBER_FORMATS;
+  return function(amount, currencySymbol, fractionSize) {
+    if (isUndefined(currencySymbol)) {
+      currencySymbol = formats.CURRENCY_SYM;
+    }
+
+    if (isUndefined(fractionSize)) {
+      fractionSize = formats.PATTERNS[1].maxFrac;
+    }
+
+    // if null or undefined pass it through
+    return (amount == null)
+        ? amount
+        : formatNumber(amount, formats.PATTERNS[1], formats.GROUP_SEP, formats.DECIMAL_SEP, fractionSize).
+            replace(/\u00A4/g, currencySymbol);
+  };
+}
+
+/**
+ * @ngdoc filter
+ * @name number
+ * @kind function
+ *
+ * @description
+ * Formats a number as text.
+ *
+ * If the input is null or undefined, it will just be returned.
+ * If the input is infinite (Infinity/-Infinity) the Infinity symbol '∞' is returned.
+ * If the input is not a number an empty string is returned.
+ *
+ * @param {number|string} number Number to format.
+ * @param {(number|string)=} fractionSize Number of decimal places to round the number to.
+ * If this is not provided then the fraction size is computed from the current locale's number
+ * formatting pattern. In the case of the default locale, it will be 3.
+ * @returns {string} Number rounded to decimalPlaces and places a “,” after each third digit.
+ *
+ * @example
+   <example module="numberFilterExample">
+     <file name="index.html">
+       <script>
+         angular.module('numberFilterExample', [])
+           .controller('ExampleController', ['$scope', function($scope) {
+             $scope.val = 1234.56789;
+           }]);
+       </script>
+       <div ng-controller="ExampleController">
+         Enter number: <input ng-model='val'><br>
+         Default formatting: <span id='number-default'>{{val | number}}</span><br>
+         No fractions: <span>{{val | number:0}}</span><br>
+         Negative number: <span>{{-val | number:4}}</span>
+       </div>
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should format numbers', function() {
+         expect(element(by.id('number-default')).getText()).toBe('1,234.568');
+         expect(element(by.binding('val | number:0')).getText()).toBe('1,235');
+         expect(element(by.binding('-val | number:4')).getText()).toBe('-1,234.5679');
+       });
+
+       it('should update', function() {
+         element(by.model('val')).clear();
+         element(by.model('val')).sendKeys('3374.333');
+         expect(element(by.id('number-default')).getText()).toBe('3,374.333');
+         expect(element(by.binding('val | number:0')).getText()).toBe('3,374');
+         expect(element(by.binding('-val | number:4')).getText()).toBe('-3,374.3330');
+      });
+     </file>
+   </example>
+ */
+
+
+numberFilter.$inject = ['$locale'];
+function numberFilter($locale) {
+  var formats = $locale.NUMBER_FORMATS;
+  return function(number, fractionSize) {
+
+    // if null or undefined pass it through
+    return (number == null)
+        ? number
+        : formatNumber(number, formats.PATTERNS[0], formats.GROUP_SEP, formats.DECIMAL_SEP,
+                       fractionSize);
+  };
+}
+
+var DECIMAL_SEP = '.';
+function formatNumber(number, pattern, groupSep, decimalSep, fractionSize) {
+  if (!isFinite(number) || isObject(number)) return '';
+
+  var isNegative = number < 0;
+  number = Math.abs(number);
+  var numStr = number + '',
+      formatedText = '',
+      parts = [];
+
+  var hasExponent = false;
+  if (numStr.indexOf('e') !== -1) {
+    var match = numStr.match(/([\d\.]+)e(-?)(\d+)/);
+    if (match && match[2] == '-' && match[3] > fractionSize + 1) {
+      number = 0;
+    } else {
+      formatedText = numStr;
+      hasExponent = true;
+    }
+  }
+
+  if (!hasExponent) {
+    var fractionLen = (numStr.split(DECIMAL_SEP)[1] || '').length;
+
+    // determine fractionSize if it is not specified
+    if (isUndefined(fractionSize)) {
+      fractionSize = Math.min(Math.max(pattern.minFrac, fractionLen), pattern.maxFrac);
+    }
+
+    // safely round numbers in JS without hitting imprecisions of floating-point arithmetics
+    // inspired by:
+    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/round
+    number = +(Math.round(+(number.toString() + 'e' + fractionSize)).toString() + 'e' + -fractionSize);
+
+    var fraction = ('' + number).split(DECIMAL_SEP);
+    var whole = fraction[0];
+    fraction = fraction[1] || '';
+
+    var i, pos = 0,
+        lgroup = pattern.lgSize,
+        group = pattern.gSize;
+
+    if (whole.length >= (lgroup + group)) {
+      pos = whole.length - lgroup;
+      for (i = 0; i < pos; i++) {
+        if ((pos - i) % group === 0 && i !== 0) {
+          formatedText += groupSep;
+        }
+        formatedText += whole.charAt(i);
+      }
+    }
+
+    for (i = pos; i < whole.length; i++) {
+      if ((whole.length - i) % lgroup === 0 && i !== 0) {
+        formatedText += groupSep;
+      }
+      formatedText += whole.charAt(i);
+    }
+
+    // format fraction part.
+    while (fraction.length < fractionSize) {
+      fraction += '0';
+    }
+
+    if (fractionSize && fractionSize !== "0") formatedText += decimalSep + fraction.substr(0, fractionSize);
+  } else {
+    if (fractionSize > 0 && number < 1) {
+      formatedText = number.toFixed(fractionSize);
+      number = parseFloat(formatedText);
+    }
+  }
+
+  if (number === 0) {
+    isNegative = false;
+  }
+
+  parts.push(isNegative ? pattern.negPre : pattern.posPre,
+             formatedText,
+             isNegative ? pattern.negSuf : pattern.posSuf);
+  return parts.join('');
+}
+
+function padNumber(num, digits, trim) {
+  var neg = '';
+  if (num < 0) {
+    neg =  '-';
+    num = -num;
+  }
+  num = '' + num;
+  while (num.length < digits) num = '0' + num;
+  if (trim)
+    num = num.substr(num.length - digits);
+  return neg + num;
+}
+
+
+function dateGetter(name, size, offset, trim) {
+  offset = offset || 0;
+  return function(date) {
+    var value = date['get' + name]();
+    if (offset > 0 || value > -offset)
+      value += offset;
+    if (value === 0 && offset == -12) value = 12;
+    return padNumber(value, size, trim);
+  };
+}
+
+function dateStrGetter(name, shortForm) {
+  return function(date, formats) {
+    var value = date['get' + name]();
+    var get = uppercase(shortForm ? ('SHORT' + name) : name);
+
+    return formats[get][value];
+  };
+}
+
+function timeZoneGetter(date) {
+  var zone = -1 * date.getTimezoneOffset();
+  var paddedZone = (zone >= 0) ? "+" : "";
+
+  paddedZone += padNumber(Math[zone > 0 ? 'floor' : 'ceil'](zone / 60), 2) +
+                padNumber(Math.abs(zone % 60), 2);
+
+  return paddedZone;
+}
+
+function getFirstThursdayOfYear(year) {
+    // 0 = index of January
+    var dayOfWeekOnFirst = (new Date(year, 0, 1)).getDay();
+    // 4 = index of Thursday (+1 to account for 1st = 5)
+    // 11 = index of *next* Thursday (+1 account for 1st = 12)
+    return new Date(year, 0, ((dayOfWeekOnFirst <= 4) ? 5 : 12) - dayOfWeekOnFirst);
+}
+
+function getThursdayThisWeek(datetime) {
+    return new Date(datetime.getFullYear(), datetime.getMonth(),
+      // 4 = index of Thursday
+      datetime.getDate() + (4 - datetime.getDay()));
+}
+
+function weekGetter(size) {
+   return function(date) {
+      var firstThurs = getFirstThursdayOfYear(date.getFullYear()),
+         thisThurs = getThursdayThisWeek(date);
+
+      var diff = +thisThurs - +firstThurs,
+         result = 1 + Math.round(diff / 6.048e8); // 6.048e8 ms per week
+
+      return padNumber(result, size);
+   };
+}
+
+function ampmGetter(date, formats) {
+  return date.getHours() < 12 ? formats.AMPMS[0] : formats.AMPMS[1];
+}
+
+function eraGetter(date, formats) {
+  return date.getFullYear() <= 0 ? formats.ERAS[0] : formats.ERAS[1];
+}
+
+function longEraGetter(date, formats) {
+  return date.getFullYear() <= 0 ? formats.ERANAMES[0] : formats.ERANAMES[1];
+}
+
+var DATE_FORMATS = {
+  yyyy: dateGetter('FullYear', 4),
+    yy: dateGetter('FullYear', 2, 0, true),
+     y: dateGetter('FullYear', 1),
+  MMMM: dateStrGetter('Month'),
+   MMM: dateStrGetter('Month', true),
+    MM: dateGetter('Month', 2, 1),
+     M: dateGetter('Month', 1, 1),
+    dd: dateGetter('Date', 2),
+     d: dateGetter('Date', 1),
+    HH: dateGetter('Hours', 2),
+     H: dateGetter('Hours', 1),
+    hh: dateGetter('Hours', 2, -12),
+     h: dateGetter('Hours', 1, -12),
+    mm: dateGetter('Minutes', 2),
+     m: dateGetter('Minutes', 1),
+    ss: dateGetter('Seconds', 2),
+     s: dateGetter('Seconds', 1),
+     // while ISO 8601 requires fractions to be prefixed with `.` or `,`
+     // we can be just safely rely on using `sss` since we currently don't support single or two digit fractions
+   sss: dateGetter('Milliseconds', 3),
+  EEEE: dateStrGetter('Day'),
+   EEE: dateStrGetter('Day', true),
+     a: ampmGetter,
+     Z: timeZoneGetter,
+    ww: weekGetter(2),
+     w: weekGetter(1),
+     G: eraGetter,
+     GG: eraGetter,
+     GGG: eraGetter,
+     GGGG: longEraGetter
+};
+
+var DATE_FORMATS_SPLIT = /((?:[^yMdHhmsaZEwG']+)|(?:'(?:[^']|'')*')|(?:E+|y+|M+|d+|H+|h+|m+|s+|a|Z|G+|w+))(.*)/,
+    NUMBER_STRING = /^\-?\d+$/;
+
+/**
+ * @ngdoc filter
+ * @name date
+ * @kind function
+ *
+ * @description
+ *   Formats `date` to a string based on the requested `format`.
+ *
+ *   `format` string can be composed of the following elements:
+ *
+ *   * `'yyyy'`: 4 digit representation of year (e.g. AD 1 => 0001, AD 2010 => 2010)
+ *   * `'yy'`: 2 digit representation of year, padded (00-99). (e.g. AD 2001 => 01, AD 2010 => 10)
+ *   * `'y'`: 1 digit representation of year, e.g. (AD 1 => 1, AD 199 => 199)
+ *   * `'MMMM'`: Month in year (January-December)
+ *   * `'MMM'`: Month in year (Jan-Dec)
+ *   * `'MM'`: Month in year, padded (01-12)
+ *   * `'M'`: Month in year (1-12)
+ *   * `'dd'`: Day in month, padded (01-31)
+ *   * `'d'`: Day in month (1-31)
+ *   * `'EEEE'`: Day in Week,(Sunday-Saturday)
+ *   * `'EEE'`: Day in Week, (Sun-Sat)
+ *   * `'HH'`: Hour in day, padded (00-23)
+ *   * `'H'`: Hour in day (0-23)
+ *   * `'hh'`: Hour in AM/PM, padded (01-12)
+ *   * `'h'`: Hour in AM/PM, (1-12)
+ *   * `'mm'`: Minute in hour, padded (00-59)
+ *   * `'m'`: Minute in hour (0-59)
+ *   * `'ss'`: Second in minute, padded (00-59)
+ *   * `'s'`: Second in minute (0-59)
+ *   * `'sss'`: Millisecond in second, padded (000-999)
+ *   * `'a'`: AM/PM marker
+ *   * `'Z'`: 4 digit (+sign) representation of the timezone offset (-1200-+1200)
+ *   * `'ww'`: Week of year, padded (00-53). Week 01 is the week with the first Thursday of the year
+ *   * `'w'`: Week of year (0-53). Week 1 is the week with the first Thursday of the year
+ *   * `'G'`, `'GG'`, `'GGG'`: The abbreviated form of the era string (e.g. 'AD')
+ *   * `'GGGG'`: The long form of the era string (e.g. 'Anno Domini')
+ *
+ *   `format` string can also be one of the following predefined
+ *   {@link guide/i18n localizable formats}:
+ *
+ *   * `'medium'`: equivalent to `'MMM d, y h:mm:ss a'` for en_US locale
+ *     (e.g. Sep 3, 2010 12:05:08 PM)
+ *   * `'short'`: equivalent to `'M/d/yy h:mm a'` for en_US  locale (e.g. 9/3/10 12:05 PM)
+ *   * `'fullDate'`: equivalent to `'EEEE, MMMM d, y'` for en_US  locale
+ *     (e.g. Friday, September 3, 2010)
+ *   * `'longDate'`: equivalent to `'MMMM d, y'` for en_US  locale (e.g. September 3, 2010)
+ *   * `'mediumDate'`: equivalent to `'MMM d, y'` for en_US  locale (e.g. Sep 3, 2010)
+ *   * `'shortDate'`: equivalent to `'M/d/yy'` for en_US locale (e.g. 9/3/10)
+ *   * `'mediumTime'`: equivalent to `'h:mm:ss a'` for en_US locale (e.g. 12:05:08 PM)
+ *   * `'shortTime'`: equivalent to `'h:mm a'` for en_US locale (e.g. 12:05 PM)
+ *
+ *   `format` string can contain literal values. These need to be escaped by surrounding with single quotes (e.g.
+ *   `"h 'in the morning'"`). In order to output a single quote, escape it - i.e., two single quotes in a sequence
+ *   (e.g. `"h 'o''clock'"`).
+ *
+ * @param {(Date|number|string)} date Date to format either as Date object, milliseconds (string or
+ *    number) or various ISO 8601 datetime string formats (e.g. yyyy-MM-ddTHH:mm:ss.sssZ and its
+ *    shorter versions like yyyy-MM-ddTHH:mmZ, yyyy-MM-dd or yyyyMMddTHHmmssZ). If no timezone is
+ *    specified in the string input, the time is considered to be in the local timezone.
+ * @param {string=} format Formatting rules (see Description). If not specified,
+ *    `mediumDate` is used.
+ * @param {string=} timezone Timezone to be used for formatting. Right now, only `'UTC'` is supported.
+ *    If not specified, the timezone of the browser will be used.
+ * @returns {string} Formatted string or the input if input is not recognized as date/millis.
+ *
+ * @example
+   <example>
+     <file name="index.html">
+       <span ng-non-bindable>{{1288323623006 | date:'medium'}}</span>:
+           <span>{{1288323623006 | date:'medium'}}</span><br>
+       <span ng-non-bindable>{{1288323623006 | date:'yyyy-MM-dd HH:mm:ss Z'}}</span>:
+          <span>{{1288323623006 | date:'yyyy-MM-dd HH:mm:ss Z'}}</span><br>
+       <span ng-non-bindable>{{1288323623006 | date:'MM/dd/yyyy @ h:mma'}}</span>:
+          <span>{{'1288323623006' | date:'MM/dd/yyyy @ h:mma'}}</span><br>
+       <span ng-non-bindable>{{1288323623006 | date:"MM/dd/yyyy 'at' h:mma"}}</span>:
+          <span>{{'1288323623006' | date:"MM/dd/yyyy 'at' h:mma"}}</span><br>
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should format date', function() {
+         expect(element(by.binding("1288323623006 | date:'medium'")).getText()).
+            toMatch(/Oct 2\d, 2010 \d{1,2}:\d{2}:\d{2} (AM|PM)/);
+         expect(element(by.binding("1288323623006 | date:'yyyy-MM-dd HH:mm:ss Z'")).getText()).
+            toMatch(/2010\-10\-2\d \d{2}:\d{2}:\d{2} (\-|\+)?\d{4}/);
+         expect(element(by.binding("'1288323623006' | date:'MM/dd/yyyy @ h:mma'")).getText()).
+            toMatch(/10\/2\d\/2010 @ \d{1,2}:\d{2}(AM|PM)/);
+         expect(element(by.binding("'1288323623006' | date:\"MM/dd/yyyy 'at' h:mma\"")).getText()).
+            toMatch(/10\/2\d\/2010 at \d{1,2}:\d{2}(AM|PM)/);
+       });
+     </file>
+   </example>
+ */
+dateFilter.$inject = ['$locale'];
+function dateFilter($locale) {
+
+
+  var R_ISO8601_STR = /^(\d{4})-?(\d\d)-?(\d\d)(?:T(\d\d)(?::?(\d\d)(?::?(\d\d)(?:\.(\d+))?)?)?(Z|([+-])(\d\d):?(\d\d))?)?$/;
+                     // 1        2       3         4          5          6          7          8  9     10      11
+  function jsonStringToDate(string) {
+    var match;
+    if (match = string.match(R_ISO8601_STR)) {
+      var date = new Date(0),
+          tzHour = 0,
+          tzMin  = 0,
+          dateSetter = match[8] ? date.setUTCFullYear : date.setFullYear,
+          timeSetter = match[8] ? date.setUTCHours : date.setHours;
+
+      if (match[9]) {
+        tzHour = int(match[9] + match[10]);
+        tzMin = int(match[9] + match[11]);
+      }
+      dateSetter.call(date, int(match[1]), int(match[2]) - 1, int(match[3]));
+      var h = int(match[4] || 0) - tzHour;
+      var m = int(match[5] || 0) - tzMin;
+      var s = int(match[6] || 0);
+      var ms = Math.round(parseFloat('0.' + (match[7] || 0)) * 1000);
+      timeSetter.call(date, h, m, s, ms);
+      return date;
+    }
+    return string;
+  }
+
+
+  return function(date, format, timezone) {
+    var text = '',
+        parts = [],
+        fn, match;
+
+    format = format || 'mediumDate';
+    format = $locale.DATETIME_FORMATS[format] || format;
+    if (isString(date)) {
+      date = NUMBER_STRING.test(date) ? int(date) : jsonStringToDate(date);
+    }
+
+    if (isNumber(date)) {
+      date = new Date(date);
+    }
+
+    if (!isDate(date)) {
+      return date;
+    }
+
+    while (format) {
+      match = DATE_FORMATS_SPLIT.exec(format);
+      if (match) {
+        parts = concat(parts, match, 1);
+        format = parts.pop();
+      } else {
+        parts.push(format);
+        format = null;
+      }
+    }
+
+    if (timezone && timezone === 'UTC') {
+      date = new Date(date.getTime());
+      date.setMinutes(date.getMinutes() + date.getTimezoneOffset());
+    }
+    forEach(parts, function(value) {
+      fn = DATE_FORMATS[value];
+      text += fn ? fn(date, $locale.DATETIME_FORMATS)
+                 : value.replace(/(^'|'$)/g, '').replace(/''/g, "'");
+    });
+
+    return text;
+  };
+}
+
+
+/**
+ * @ngdoc filter
+ * @name json
+ * @kind function
+ *
+ * @description
+ *   Allows you to convert a JavaScript object into JSON string.
+ *
+ *   This filter is mostly useful for debugging. When using the double curly {{value}} notation
+ *   the binding is automatically converted to JSON.
+ *
+ * @param {*} object Any JavaScript object (including arrays and primitive types) to filter.
+ * @param {number=} spacing The number of spaces to use per indentation, defaults to 2.
+ * @returns {string} JSON string.
+ *
+ *
+ * @example
+   <example>
+     <file name="index.html">
+       <pre id="default-spacing">{{ {'name':'value'} | json }}</pre>
+       <pre id="custom-spacing">{{ {'name':'value'} | json:4 }}</pre>
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should jsonify filtered objects', function() {
+         expect(element(by.id('default-spacing')).getText()).toMatch(/\{\n  "name": ?"value"\n}/);
+         expect(element(by.id('custom-spacing')).getText()).toMatch(/\{\n    "name": ?"value"\n}/);
+       });
+     </file>
+   </example>
+ *
+ */
+function jsonFilter() {
+  return function(object, spacing) {
+    if (isUndefined(spacing)) {
+        spacing = 2;
+    }
+    return toJson(object, spacing);
+  };
+}
+
+
+/**
+ * @ngdoc filter
+ * @name lowercase
+ * @kind function
+ * @description
+ * Converts string to lowercase.
+ * @see angular.lowercase
+ */
+var lowercaseFilter = valueFn(lowercase);
+
+
+/**
+ * @ngdoc filter
+ * @name uppercase
+ * @kind function
+ * @description
+ * Converts string to uppercase.
+ * @see angular.uppercase
+ */
+var uppercaseFilter = valueFn(uppercase);
+
+/**
+ * @ngdoc filter
+ * @name limitTo
+ * @kind function
+ *
+ * @description
+ * Creates a new array or string containing only a specified number of elements. The elements
+ * are taken from either the beginning or the end of the source array, string or number, as specified by
+ * the value and sign (positive or negative) of `limit`. If a number is used as input, it is
+ * converted to a string.
+ *
+ * @param {Array|string|number} input Source array, string or number to be limited.
+ * @param {string|number} limit The length of the returned array or string. If the `limit` number
+ *     is positive, `limit` number of items from the beginning of the source array/string are copied.
+ *     If the number is negative, `limit` number  of items from the end of the source array/string
+ *     are copied. The `limit` will be trimmed if it exceeds `array.length`
+ * @returns {Array|string} A new sub-array or substring of length `limit` or less if input array
+ *     had less than `limit` elements.
+ *
+ * @example
+   <example module="limitToExample">
+     <file name="index.html">
+       <script>
+         angular.module('limitToExample', [])
+           .controller('ExampleController', ['$scope', function($scope) {
+             $scope.numbers = [1,2,3,4,5,6,7,8,9];
+             $scope.letters = "abcdefghi";
+             $scope.longNumber = 2345432342;
+             $scope.numLimit = 3;
+             $scope.letterLimit = 3;
+             $scope.longNumberLimit = 3;
+           }]);
+       </script>
+       <div ng-controller="ExampleController">
+         Limit {{numbers}} to: <input type="number" step="1" ng-model="numLimit">
+         <p>Output numbers: {{ numbers | limitTo:numLimit }}</p>
+         Limit {{letters}} to: <input type="number" step="1" ng-model="letterLimit">
+         <p>Output letters: {{ letters | limitTo:letterLimit }}</p>
+         Limit {{longNumber}} to: <input type="number" step="1" ng-model="longNumberLimit">
+         <p>Output long number: {{ longNumber | limitTo:longNumberLimit }}</p>
+       </div>
+     </file>
+     <file name="protractor.js" type="protractor">
+       var numLimitInput = element(by.model('numLimit'));
+       var letterLimitInput = element(by.model('letterLimit'));
+       var longNumberLimitInput = element(by.model('longNumberLimit'));
+       var limitedNumbers = element(by.binding('numbers | limitTo:numLimit'));
+       var limitedLetters = element(by.binding('letters | limitTo:letterLimit'));
+       var limitedLongNumber = element(by.binding('longNumber | limitTo:longNumberLimit'));
+
+       it('should limit the number array to first three items', function() {
+         expect(numLimitInput.getAttribute('value')).toBe('3');
+         expect(letterLimitInput.getAttribute('value')).toBe('3');
+         expect(longNumberLimitInput.getAttribute('value')).toBe('3');
+         expect(limitedNumbers.getText()).toEqual('Output numbers: [1,2,3]');
+         expect(limitedLetters.getText()).toEqual('Output letters: abc');
+         expect(limitedLongNumber.getText()).toEqual('Output long number: 234');
+       });
+
+       // There is a bug in safari and protractor that doesn't like the minus key
+       // it('should update the output when -3 is entered', function() {
+       //   numLimitInput.clear();
+       //   numLimitInput.sendKeys('-3');
+       //   letterLimitInput.clear();
+       //   letterLimitInput.sendKeys('-3');
+       //   longNumberLimitInput.clear();
+       //   longNumberLimitInput.sendKeys('-3');
+       //   expect(limitedNumbers.getText()).toEqual('Output numbers: [7,8,9]');
+       //   expect(limitedLetters.getText()).toEqual('Output letters: ghi');
+       //   expect(limitedLongNumber.getText()).toEqual('Output long number: 342');
+       // });
+
+       it('should not exceed the maximum size of input array', function() {
+         numLimitInput.clear();
+         numLimitInput.sendKeys('100');
+         letterLimitInput.clear();
+         letterLimitInput.sendKeys('100');
+         longNumberLimitInput.clear();
+         longNumberLimitInput.sendKeys('100');
+         expect(limitedNumbers.getText()).toEqual('Output numbers: [1,2,3,4,5,6,7,8,9]');
+         expect(limitedLetters.getText()).toEqual('Output letters: abcdefghi');
+         expect(limitedLongNumber.getText()).toEqual('Output long number: 2345432342');
+       });
+     </file>
+   </example>
+*/
+function limitToFilter() {
+  return function(input, limit) {
+    if (isNumber(input)) input = input.toString();
+    if (!isArray(input) && !isString(input)) return input;
+
+    if (Math.abs(Number(limit)) === Infinity) {
+      limit = Number(limit);
+    } else {
+      limit = int(limit);
+    }
+
+    //NaN check on limit
+    if (limit) {
+      return limit > 0 ? input.slice(0, limit) : input.slice(limit);
+    } else {
+      return isString(input) ? "" : [];
+    }
+  };
+}
+
+/**
+ * @ngdoc filter
+ * @name orderBy
+ * @kind function
+ *
+ * @description
+ * Orders a specified `array` by the `expression` predicate. It is ordered alphabetically
+ * for strings and numerically for numbers. Note: if you notice numbers are not being sorted
+ * correctly, make sure they are actually being saved as numbers and not strings.
+ *
+ * @param {Array} array The array to sort.
+ * @param {function(*)|string|Array.<(function(*)|string)>=} expression A predicate to be
+ *    used by the comparator to determine the order of elements.
+ *
+ *    Can be one of:
+ *
+ *    - `function`: Getter function. The result of this function will be sorted using the
+ *      `<`, `===`, `>` operator.
+ *    - `string`: An Angular expression. The result of this expression is used to compare elements
+ *      (for example `name` to sort by a property called `name` or `name.substr(0, 3)` to sort by
+ *      3 first characters of a property called `name`). The result of a constant expression
+ *      is interpreted as a property name to be used in comparisons (for example `"special name"`
+ *      to sort object by the value of their `special name` property). An expression can be
+ *      optionally prefixed with `+` or `-` to control ascending or descending sort order
+ *      (for example, `+name` or `-name`). If no property is provided, (e.g. `'+'`) then the array
+ *      element itself is used to compare where sorting.
+ *    - `Array`: An array of function or string predicates. The first predicate in the array
+ *      is used for sorting, but when two items are equivalent, the next predicate is used.
+ *
+ *    If the predicate is missing or empty then it defaults to `'+'`.
+ *
+ * @param {boolean=} reverse Reverse the order of the array.
+ * @returns {Array} Sorted copy of the source array.
+ *
+ *
+ * @example
+ * The example below demonstrates a simple ngRepeat, where the data is sorted
+ * by age in descending order (predicate is set to `'-age'`).
+ * `reverse` is not set, which means it defaults to `false`.
+   <example module="orderByExample">
+     <file name="index.html">
+       <script>
+         angular.module('orderByExample', [])
+           .controller('ExampleController', ['$scope', function($scope) {
+             $scope.friends =
+                 [{name:'John', phone:'555-1212', age:10},
+                  {name:'Mary', phone:'555-9876', age:19},
+                  {name:'Mike', phone:'555-4321', age:21},
+                  {name:'Adam', phone:'555-5678', age:35},
+                  {name:'Julie', phone:'555-8765', age:29}];
+           }]);
+       </script>
+       <div ng-controller="ExampleController">
+         <table class="friend">
+           <tr>
+             <th>Name</th>
+             <th>Phone Number</th>
+             <th>Age</th>
+           </tr>
+           <tr ng-repeat="friend in friends | orderBy:'-age'">
+             <td>{{friend.name}}</td>
+             <td>{{friend.phone}}</td>
+             <td>{{friend.age}}</td>
+           </tr>
+         </table>
+       </div>
+     </file>
+   </example>
+ *
+ * The predicate and reverse parameters can be controlled dynamically through scope properties,
+ * as shown in the next example.
+ * @example
+   <example module="orderByExample">
+     <file name="index.html">
+       <script>
+         angular.module('orderByExample', [])
+           .controller('ExampleController', ['$scope', function($scope) {
+             $scope.friends =
+                 [{name:'John', phone:'555-1212', age:10},
+                  {name:'Mary', phone:'555-9876', age:19},
+                  {name:'Mike', phone:'555-4321', age:21},
+                  {name:'Adam', phone:'555-5678', age:35},
+                  {name:'Julie', phone:'555-8765', age:29}];
+             $scope.predicate = '-age';
+           }]);
+       </script>
+       <div ng-controller="ExampleController">
+         <pre>Sorting predicate = {{predicate}}; reverse = {{reverse}}</pre>
+         <hr/>
+         [ <a href="" ng-click="predicate=''">unsorted</a> ]
+         <table class="friend">
+           <tr>
+             <th><a href="" ng-click="predicate = 'name'; reverse=false">Name</a>
+                 (<a href="" ng-click="predicate = '-name'; reverse=false">^</a>)</th>
+             <th><a href="" ng-click="predicate = 'phone'; reverse=!reverse">Phone Number</a></th>
+             <th><a href="" ng-click="predicate = 'age'; reverse=!reverse">Age</a></th>
+           </tr>
+           <tr ng-repeat="friend in friends | orderBy:predicate:reverse">
+             <td>{{friend.name}}</td>
+             <td>{{friend.phone}}</td>
+             <td>{{friend.age}}</td>
+           </tr>
+         </table>
+       </div>
+     </file>
+   </example>
+ *
+ * It's also possible to call the orderBy filter manually, by injecting `$filter`, retrieving the
+ * filter routine with `$filter('orderBy')`, and calling the returned filter routine with the
+ * desired parameters.
+ *
+ * Example:
+ *
+ * @example
+  <example module="orderByExample">
+    <file name="index.html">
+      <div ng-controller="ExampleController">
+        <table class="friend">
+          <tr>
+            <th><a href="" ng-click="reverse=false;order('name', false)">Name</a>
+              (<a href="" ng-click="order('-name',false)">^</a>)</th>
+            <th><a href="" ng-click="reverse=!reverse;order('phone', reverse)">Phone Number</a></th>
+            <th><a href="" ng-click="reverse=!reverse;order('age',reverse)">Age</a></th>
+          </tr>
+          <tr ng-repeat="friend in friends">
+            <td>{{friend.name}}</td>
+            <td>{{friend.phone}}</td>
+            <td>{{friend.age}}</td>
+          </tr>
+        </table>
+      </div>
+    </file>
+
+    <file name="script.js">
+      angular.module('orderByExample', [])
+        .controller('ExampleController', ['$scope', '$filter', function($scope, $filter) {
+          var orderBy = $filter('orderBy');
+          $scope.friends = [
+            { name: 'John',    phone: '555-1212',    age: 10 },
+            { name: 'Mary',    phone: '555-9876',    age: 19 },
+            { name: 'Mike',    phone: '555-4321',    age: 21 },
+            { name: 'Adam',    phone: '555-5678',    age: 35 },
+            { name: 'Julie',   phone: '555-8765',    age: 29 }
+          ];
+          $scope.order = function(predicate, reverse) {
+            $scope.friends = orderBy($scope.friends, predicate, reverse);
+          };
+          $scope.order('-age',false);
+        }]);
+    </file>
+</example>
+ */
+orderByFilter.$inject = ['$parse'];
+function orderByFilter($parse) {
+  return function(array, sortPredicate, reverseOrder) {
+    if (!(isArrayLike(array))) return array;
+    sortPredicate = isArray(sortPredicate) ? sortPredicate : [sortPredicate];
+    if (sortPredicate.length === 0) { sortPredicate = ['+']; }
+    sortPredicate = sortPredicate.map(function(predicate) {
+      var descending = false, get = predicate || identity;
+      if (isString(predicate)) {
+        if ((predicate.charAt(0) == '+' || predicate.charAt(0) == '-')) {
+          descending = predicate.charAt(0) == '-';
+          predicate = predicate.substring(1);
+        }
+        if (predicate === '') {
+          // Effectively no predicate was passed so we compare identity
+          return reverseComparator(compare, descending);
+        }
+        get = $parse(predicate);
+        if (get.constant) {
+          var key = get();
+          return reverseComparator(function(a, b) {
+            return compare(a[key], b[key]);
+          }, descending);
+        }
+      }
+      return reverseComparator(function(a, b) {
+        return compare(get(a),get(b));
+      }, descending);
+    });
+    return slice.call(array).sort(reverseComparator(comparator, reverseOrder));
+
+    function comparator(o1, o2) {
+      for (var i = 0; i < sortPredicate.length; i++) {
+        var comp = sortPredicate[i](o1, o2);
+        if (comp !== 0) return comp;
+      }
+      return 0;
+    }
+    function reverseComparator(comp, descending) {
+      return descending
+          ? function(a, b) {return comp(b,a);}
+          : comp;
+    }
+
+    function isPrimitive(value) {
+      switch (typeof value) {
+        case 'number': /* falls through */
+        case 'boolean': /* falls through */
+        case 'string':
+          return true;
+        default:
+          return false;
+      }
+    }
+
+    function objectToString(value) {
+      if (value === null) return 'null';
+      if (typeof value.valueOf === 'function') {
+        value = value.valueOf();
+        if (isPrimitive(value)) return value;
+      }
+      if (typeof value.toString === 'function') {
+        value = value.toString();
+        if (isPrimitive(value)) return value;
+      }
+      return '';
+    }
+
+    function compare(v1, v2) {
+      var t1 = typeof v1;
+      var t2 = typeof v2;
+      if (t1 === t2 && t1 === "object") {
+        v1 = objectToString(v1);
+        v2 = objectToString(v2);
+      }
+      if (t1 === t2) {
+        if (t1 === "string") {
+           v1 = v1.toLowerCase();
+           v2 = v2.toLowerCase();
+        }
+        if (v1 === v2) return 0;
+        return v1 < v2 ? -1 : 1;
+      } else {
+        return t1 < t2 ? -1 : 1;
+      }
+    }
+  };
+}
+
+function ngDirective(directive) {
+  if (isFunction(directive)) {
+    directive = {
+      link: directive
+    };
+  }
+  directive.restrict = directive.restrict || 'AC';
+  return valueFn(directive);
+}
+
+/**
+ * @ngdoc directive
+ * @name a
+ * @restrict E
+ *
+ * @description
+ * Modifies the default behavior of the html A tag so that the default action is prevented when
+ * the href attribute is empty.
+ *
+ * This change permits the easy creation of action links with the `ngClick` directive
+ * without changing the location or causing page reloads, e.g.:
+ * `<a href="" ng-click="list.addItem()">Add Item</a>`
+ */
+var htmlAnchorDirective = valueFn({
+  restrict: 'E',
+  compile: function(element, attr) {
+    if (!attr.href && !attr.xlinkHref && !attr.name) {
+      return function(scope, element) {
+        // If the linked element is not an anchor tag anymore, do nothing
+        if (element[0].nodeName.toLowerCase() !== 'a') return;
+
+        // SVGAElement does not use the href attribute, but rather the 'xlinkHref' attribute.
+        var href = toString.call(element.prop('href')) === '[object SVGAnimatedString]' ?
+                   'xlink:href' : 'href';
+        element.on('click', function(event) {
+          // if we have no href url, then don't navigate anywhere.
+          if (!element.attr(href)) {
+            event.preventDefault();
+          }
+        });
+      };
+    }
+  }
+});
+
+/**
+ * @ngdoc directive
+ * @name ngHref
+ * @restrict A
+ * @priority 99
+ *
+ * @description
+ * Using Angular markup like `{{hash}}` in an href attribute will
+ * make the link go to the wrong URL if the user clicks it before
+ * Angular has a chance to replace the `{{hash}}` markup with its
+ * value. Until Angular replaces the markup the link will be broken
+ * and will most likely return a 404 error. The `ngHref` directive
+ * solves this problem.
+ *
+ * The wrong way to write it:
+ * ```html
+ * <a href="http://www.gravatar.com/avatar/{{hash}}">link1</a>
+ * ```
+ *
+ * The correct way to write it:
+ * ```html
+ * <a ng-href="http://www.gravatar.com/avatar/{{hash}}">link1</a>
+ * ```
+ *
+ * @element A
+ * @param {template} ngHref any string which can contain `{{}}` markup.
+ *
+ * @example
+ * This example shows various combinations of `href`, `ng-href` and `ng-click` attributes
+ * in links and their different behaviors:
+    <example>
+      <file name="index.html">
+        <input ng-model="value" /><br />
+        <a id="link-1" href ng-click="value = 1">link 1</a> (link, don't reload)<br />
+        <a id="link-2" href="" ng-click="value = 2">link 2</a> (link, don't reload)<br />
+        <a id="link-3" ng-href="/{{'123'}}">link 3</a> (link, reload!)<br />
+        <a id="link-4" href="" name="xx" ng-click="value = 4">anchor</a> (link, don't reload)<br />
+        <a id="link-5" name="xxx" ng-click="value = 5">anchor</a> (no link)<br />
+        <a id="link-6" ng-href="{{value}}">link</a> (link, change location)
+      </file>
+      <file name="protractor.js" type="protractor">
+        it('should execute ng-click but not reload when href without value', function() {
+          element(by.id('link-1')).click();
+          expect(element(by.model('value')).getAttribute('value')).toEqual('1');
+          expect(element(by.id('link-1')).getAttribute('href')).toBe('');
+        });
+
+        it('should execute ng-click but not reload when href empty string', function() {
+          element(by.id('link-2')).click();
+          expect(element(by.model('value')).getAttribute('value')).toEqual('2');
+          expect(element(by.id('link-2')).getAttribute('href')).toBe('');
+        });
+
+        it('should execute ng-click and change url when ng-href specified', function() {
+          expect(element(by.id('link-3')).getAttribute('href')).toMatch(/\/123$/);
+
+          element(by.id('link-3')).click();
+
+          // At this point, we navigate away from an Angular page, so we need
+          // to use browser.driver to get the base webdriver.
+
+          browser.wait(function() {
+            return browser.driver.getCurrentUrl().then(function(url) {
+              return url.match(/\/123$/);
+            });
+          }, 5000, 'page should navigate to /123');
+        });
+
+        xit('should execute ng-click but not reload when href empty string and name specified', function() {
+          element(by.id('link-4')).click();
+          expect(element(by.model('value')).getAttribute('value')).toEqual('4');
+          expect(element(by.id('link-4')).getAttribute('href')).toBe('');
+        });
+
+        it('should execute ng-click but not reload when no href but name specified', function() {
+          element(by.id('link-5')).click();
+          expect(element(by.model('value')).getAttribute('value')).toEqual('5');
+          expect(element(by.id('link-5')).getAttribute('href')).toBe(null);
+        });
+
+        it('should only change url when only ng-href', function() {
+          element(by.model('value')).clear();
+          element(by.model('value')).sendKeys('6');
+          expect(element(by.id('link-6')).getAttribute('href')).toMatch(/\/6$/);
+
+          element(by.id('link-6')).click();
+
+          // At this point, we navigate away from an Angular page, so we need
+          // to use browser.driver to get the base webdriver.
+          browser.wait(function() {
+            return browser.driver.getCurrentUrl().then(function(url) {
+              return url.match(/\/6$/);
+            });
+          }, 5000, 'page should navigate to /6');
+        });
+      </file>
+    </example>
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngSrc
+ * @restrict A
+ * @priority 99
+ *
+ * @description
+ * Using Angular markup like `{{hash}}` in a `src` attribute doesn't
+ * work right: The browser will fetch from the URL with the literal
+ * text `{{hash}}` until Angular replaces the expression inside
+ * `{{hash}}`. The `ngSrc` directive solves this problem.
+ *
+ * The buggy way to write it:
+ * ```html
+ * <img src="http://www.gravatar.com/avatar/{{hash}}"/>
+ * ```
+ *
+ * The correct way to write it:
+ * ```html
+ * <img ng-src="http://www.gravatar.com/avatar/{{hash}}"/>
+ * ```
+ *
+ * @element IMG
+ * @param {template} ngSrc any string which can contain `{{}}` markup.
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngSrcset
+ * @restrict A
+ * @priority 99
+ *
+ * @description
+ * Using Angular markup like `{{hash}}` in a `srcset` attribute doesn't
+ * work right: The browser will fetch from the URL with the literal
+ * text `{{hash}}` until Angular replaces the expression inside
+ * `{{hash}}`. The `ngSrcset` directive solves this problem.
+ *
+ * The buggy way to write it:
+ * ```html
+ * <img srcset="http://www.gravatar.com/avatar/{{hash}} 2x"/>
+ * ```
+ *
+ * The correct way to write it:
+ * ```html
+ * <img ng-srcset="http://www.gravatar.com/avatar/{{hash}} 2x"/>
+ * ```
+ *
+ * @element IMG
+ * @param {template} ngSrcset any string which can contain `{{}}` markup.
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngDisabled
+ * @restrict A
+ * @priority 100
+ *
+ * @description
+ *
+ * This directive sets the `disabled` attribute on the element if the
+ * {@link guide/expression expression} inside `ngDisabled` evaluates to truthy.
+ *
+ * A special directive is necessary because we cannot use interpolation inside the `disabled`
+ * attribute.  The following example would make the button enabled on Chrome/Firefox
+ * but not on older IEs:
+ *
+ * ```html
+ * <!-- See below for an example of ng-disabled being used correctly -->
+ * <div ng-init="isDisabled = false">
+ *  <button disabled="{{isDisabled}}">Disabled</button>
+ * </div>
+ * ```
+ *
+ * This is because the HTML specification does not require browsers to preserve the values of
+ * boolean attributes such as `disabled` (Their presence means true and their absence means false.)
+ * If we put an Angular interpolation expression into such an attribute then the
+ * binding information would be lost when the browser removes the attribute.
+ *
+ * @example
+    <example>
+      <file name="index.html">
+        Click me to toggle: <input type="checkbox" ng-model="checked"><br/>
+        <button ng-model="button" ng-disabled="checked">Button</button>
+      </file>
+      <file name="protractor.js" type="protractor">
+        it('should toggle button', function() {
+          expect(element(by.css('button')).getAttribute('disabled')).toBeFalsy();
+          element(by.model('checked')).click();
+          expect(element(by.css('button')).getAttribute('disabled')).toBeTruthy();
+        });
+      </file>
+    </example>
+ *
+ * @element INPUT
+ * @param {expression} ngDisabled If the {@link guide/expression expression} is truthy,
+ *     then the `disabled` attribute will be set on the element
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngChecked
+ * @restrict A
+ * @priority 100
+ *
+ * @description
+ * The HTML specification does not require browsers to preserve the values of boolean attributes
+ * such as checked. (Their presence means true and their absence means false.)
+ * If we put an Angular interpolation expression into such an attribute then the
+ * binding information would be lost when the browser removes the attribute.
+ * The `ngChecked` directive solves this problem for the `checked` attribute.
+ * This complementary directive is not removed by the browser and so provides
+ * a permanent reliable place to store the binding information.
+ * @example
+    <example>
+      <file name="index.html">
+        Check me to check both: <input type="checkbox" ng-model="master"><br/>
+        <input id="checkSlave" type="checkbox" ng-checked="master">
+      </file>
+      <file name="protractor.js" type="protractor">
+        it('should check both checkBoxes', function() {
+          expect(element(by.id('checkSlave')).getAttribute('checked')).toBeFalsy();
+          element(by.model('master')).click();
+          expect(element(by.id('checkSlave')).getAttribute('checked')).toBeTruthy();
+        });
+      </file>
+    </example>
+ *
+ * @element INPUT
+ * @param {expression} ngChecked If the {@link guide/expression expression} is truthy,
+ *     then special attribute "checked" will be set on the element
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngReadonly
+ * @restrict A
+ * @priority 100
+ *
+ * @description
+ * The HTML specification does not require browsers to preserve the values of boolean attributes
+ * such as readonly. (Their presence means true and their absence means false.)
+ * If we put an Angular interpolation expression into such an attribute then the
+ * binding information would be lost when the browser removes the attribute.
+ * The `ngReadonly` directive solves this problem for the `readonly` attribute.
+ * This complementary directive is not removed by the browser and so provides
+ * a permanent reliable place to store the binding information.
+ * @example
+    <example>
+      <file name="index.html">
+        Check me to make text readonly: <input type="checkbox" ng-model="checked"><br/>
+        <input type="text" ng-readonly="checked" value="I'm Angular"/>
+      </file>
+      <file name="protractor.js" type="protractor">
+        it('should toggle readonly attr', function() {
+          expect(element(by.css('[type="text"]')).getAttribute('readonly')).toBeFalsy();
+          element(by.model('checked')).click();
+          expect(element(by.css('[type="text"]')).getAttribute('readonly')).toBeTruthy();
+        });
+      </file>
+    </example>
+ *
+ * @element INPUT
+ * @param {expression} ngReadonly If the {@link guide/expression expression} is truthy,
+ *     then special attribute "readonly" will be set on the element
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngSelected
+ * @restrict A
+ * @priority 100
+ *
+ * @description
+ * The HTML specification does not require browsers to preserve the values of boolean attributes
+ * such as selected. (Their presence means true and their absence means false.)
+ * If we put an Angular interpolation expression into such an attribute then the
+ * binding information would be lost when the browser removes the attribute.
+ * The `ngSelected` directive solves this problem for the `selected` attribute.
+ * This complementary directive is not removed by the browser and so provides
+ * a permanent reliable place to store the binding information.
+ *
+ * @example
+    <example>
+      <file name="index.html">
+        Check me to select: <input type="checkbox" ng-model="selected"><br/>
+        <select>
+          <option>Hello!</option>
+          <option id="greet" ng-selected="selected">Greetings!</option>
+        </select>
+      </file>
+      <file name="protractor.js" type="protractor">
+        it('should select Greetings!', function() {
+          expect(element(by.id('greet')).getAttribute('selected')).toBeFalsy();
+          element(by.model('selected')).click();
+          expect(element(by.id('greet')).getAttribute('selected')).toBeTruthy();
+        });
+      </file>
+    </example>
+ *
+ * @element OPTION
+ * @param {expression} ngSelected If the {@link guide/expression expression} is truthy,
+ *     then special attribute "selected" will be set on the element
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngOpen
+ * @restrict A
+ * @priority 100
+ *
+ * @description
+ * The HTML specification does not require browsers to preserve the values of boolean attributes
+ * such as open. (Their presence means true and their absence means false.)
+ * If we put an Angular interpolation expression into such an attribute then the
+ * binding information would be lost when the browser removes the attribute.
+ * The `ngOpen` directive solves this problem for the `open` attribute.
+ * This complementary directive is not removed by the browser and so provides
+ * a permanent reliable place to store the binding information.
+ * @example
+     <example>
+       <file name="index.html">
+         Check me check multiple: <input type="checkbox" ng-model="open"><br/>
+         <details id="details" ng-open="open">
+            <summary>Show/Hide me</summary>
+         </details>
+       </file>
+       <file name="protractor.js" type="protractor">
+         it('should toggle open', function() {
+           expect(element(by.id('details')).getAttribute('open')).toBeFalsy();
+           element(by.model('open')).click();
+           expect(element(by.id('details')).getAttribute('open')).toBeTruthy();
+         });
+       </file>
+     </example>
+ *
+ * @element DETAILS
+ * @param {expression} ngOpen If the {@link guide/expression expression} is truthy,
+ *     then special attribute "open" will be set on the element
+ */
+
+var ngAttributeAliasDirectives = {};
+
+
+// boolean attrs are evaluated
+forEach(BOOLEAN_ATTR, function(propName, attrName) {
+  // binding to multiple is not supported
+  if (propName == "multiple") return;
+
+  var normalized = directiveNormalize('ng-' + attrName);
+  ngAttributeAliasDirectives[normalized] = function() {
+    return {
+      restrict: 'A',
+      priority: 100,
+      link: function(scope, element, attr) {
+        scope.$watch(attr[normalized], function ngBooleanAttrWatchAction(value) {
+          attr.$set(attrName, !!value);
+        });
+      }
+    };
+  };
+});
+
+// aliased input attrs are evaluated
+forEach(ALIASED_ATTR, function(htmlAttr, ngAttr) {
+  ngAttributeAliasDirectives[ngAttr] = function() {
+    return {
+      priority: 100,
+      link: function(scope, element, attr) {
+        //special case ngPattern when a literal regular expression value
+        //is used as the expression (this way we don't have to watch anything).
+        if (ngAttr === "ngPattern" && attr.ngPattern.charAt(0) == "/") {
+          var match = attr.ngPattern.match(REGEX_STRING_REGEXP);
+          if (match) {
+            attr.$set("ngPattern", new RegExp(match[1], match[2]));
+            return;
+          }
+        }
+
+        scope.$watch(attr[ngAttr], function ngAttrAliasWatchAction(value) {
+          attr.$set(ngAttr, value);
+        });
+      }
+    };
+  };
+});
+
+// ng-src, ng-srcset, ng-href are interpolated
+forEach(['src', 'srcset', 'href'], function(attrName) {
+  var normalized = directiveNormalize('ng-' + attrName);
+  ngAttributeAliasDirectives[normalized] = function() {
+    return {
+      priority: 99, // it needs to run after the attributes are interpolated
+      link: function(scope, element, attr) {
+        var propName = attrName,
+            name = attrName;
+
+        if (attrName === 'href' &&
+            toString.call(element.prop('href')) === '[object SVGAnimatedString]') {
+          name = 'xlinkHref';
+          attr.$attr[name] = 'xlink:href';
+          propName = null;
+        }
+
+        attr.$observe(normalized, function(value) {
+          if (!value) {
+            if (attrName === 'href') {
+              attr.$set(name, null);
+            }
+            return;
+          }
+
+          attr.$set(name, value);
+
+          // on IE, if "ng:src" directive declaration is used and "src" attribute doesn't exist
+          // then calling element.setAttribute('src', 'foo') doesn't do anything, so we need
+          // to set the property as well to achieve the desired effect.
+          // we use attr[attrName] value since $set can sanitize the url.
+          if (msie && propName) element.prop(propName, attr[name]);
+        });
+      }
+    };
+  };
+});
+
+/* global -nullFormCtrl, -SUBMITTED_CLASS, addSetValidityMethod: true
+ */
+var nullFormCtrl = {
+  $addControl: noop,
+  $$renameControl: nullFormRenameControl,
+  $removeControl: noop,
+  $setValidity: noop,
+  $setDirty: noop,
+  $setPristine: noop,
+  $setSubmitted: noop
+},
+SUBMITTED_CLASS = 'ng-submitted';
+
+function nullFormRenameControl(control, name) {
+  control.$name = name;
+}
+
+/**
+ * @ngdoc type
+ * @name form.FormController
+ *
+ * @property {boolean} $pristine True if user has not interacted with the form yet.
+ * @property {boolean} $dirty True if user has already interacted with the form.
+ * @property {boolean} $valid True if all of the containing forms and controls are valid.
+ * @property {boolean} $invalid True if at least one containing control or form is invalid.
+ * @property {boolean} $submitted True if user has submitted the form even if its invalid.
+ *
+ * @property {Object} $error Is an object hash, containing references to controls or
+ *  forms with failing validators, where:
+ *
+ *  - keys are validation tokens (error names),
+ *  - values are arrays of controls or forms that have a failing validator for given error name.
+ *
+ *  Built-in validation tokens:
+ *
+ *  - `email`
+ *  - `max`
+ *  - `maxlength`
+ *  - `min`
+ *  - `minlength`
+ *  - `number`
+ *  - `pattern`
+ *  - `required`
+ *  - `url`
+ *  - `date`
+ *  - `datetimelocal`
+ *  - `time`
+ *  - `week`
+ *  - `month`
+ *
+ * @description
+ * `FormController` keeps track of all its controls and nested forms as well as the state of them,
+ * such as being valid/invalid or dirty/pristine.
+ *
+ * Each {@link ng.directive:form form} directive creates an instance
+ * of `FormController`.
+ *
+ */
+//asks for $scope to fool the BC controller module
+FormController.$inject = ['$element', '$attrs', '$scope', '$animate', '$interpolate'];
+function FormController(element, attrs, $scope, $animate, $interpolate) {
+  var form = this,
+      controls = [];
+
+  var parentForm = form.$$parentForm = element.parent().controller('form') || nullFormCtrl;
+
+  // init state
+  form.$error = {};
+  form.$$success = {};
+  form.$pending = undefined;
+  form.$name = $interpolate(attrs.name || attrs.ngForm || '')($scope);
+  form.$dirty = false;
+  form.$pristine = true;
+  form.$valid = true;
+  form.$invalid = false;
+  form.$submitted = false;
+
+  parentForm.$addControl(form);
+
+  /**
+   * @ngdoc method
+   * @name form.FormController#$rollbackViewValue
+   *
+   * @description
+   * Rollback all form controls pending updates to the `$modelValue`.
+   *
+   * Updates may be pending by a debounced event or because the input is waiting for a some future
+   * event defined in `ng-model-options`. This method is typically needed by the reset button of
+   * a form that uses `ng-model-options` to pend updates.
+   */
+  form.$rollbackViewValue = function() {
+    forEach(controls, function(control) {
+      control.$rollbackViewValue();
+    });
+  };
+
+  /**
+   * @ngdoc method
+   * @name form.FormController#$commitViewValue
+   *
+   * @description
+   * Commit all form controls pending updates to the `$modelValue`.
+   *
+   * Updates may be pending by a debounced event or because the input is waiting for a some future
+   * event defined in `ng-model-options`. This method is rarely needed as `NgModelController`
+   * usually handles calling this in response to input events.
+   */
+  form.$commitViewValue = function() {
+    forEach(controls, function(control) {
+      control.$commitViewValue();
+    });
+  };
+
+  /**
+   * @ngdoc method
+   * @name form.FormController#$addControl
+   *
+   * @description
+   * Register a control with the form.
+   *
+   * Input elements using ngModelController do this automatically when they are linked.
+   */
+  form.$addControl = function(control) {
+    // Breaking change - before, inputs whose name was "hasOwnProperty" were quietly ignored
+    // and not added to the scope.  Now we throw an error.
+    assertNotHasOwnProperty(control.$name, 'input');
+    controls.push(control);
+
+    if (control.$name) {
+      form[control.$name] = control;
+    }
+  };
+
+  // Private API: rename a form control
+  form.$$renameControl = function(control, newName) {
+    var oldName = control.$name;
+
+    if (form[oldName] === control) {
+      delete form[oldName];
+    }
+    form[newName] = control;
+    control.$name = newName;
+  };
+
+  /**
+   * @ngdoc method
+   * @name form.FormController#$removeControl
+   *
+   * @description
+   * Deregister a control from the form.
+   *
+   * Input elements using ngModelController do this automatically when they are destroyed.
+   */
+  form.$removeControl = function(control) {
+    if (control.$name && form[control.$name] === control) {
+      delete form[control.$name];
+    }
+    forEach(form.$pending, function(value, name) {
+      form.$setValidity(name, null, control);
+    });
+    forEach(form.$error, function(value, name) {
+      form.$setValidity(name, null, control);
+    });
+    forEach(form.$$success, function(value, name) {
+      form.$setValidity(name, null, control);
+    });
+
+    arrayRemove(controls, control);
+  };
+
+
+  /**
+   * @ngdoc method
+   * @name form.FormController#$setValidity
+   *
+   * @description
+   * Sets the validity of a form control.
+   *
+   * This method will also propagate to parent forms.
+   */
+  addSetValidityMethod({
+    ctrl: this,
+    $element: element,
+    set: function(object, property, controller) {
+      var list = object[property];
+      if (!list) {
+        object[property] = [controller];
+      } else {
+        var index = list.indexOf(controller);
+        if (index === -1) {
+          list.push(controller);
+        }
+      }
+    },
+    unset: function(object, property, controller) {
+      var list = object[property];
+      if (!list) {
+        return;
+      }
+      arrayRemove(list, controller);
+      if (list.length === 0) {
+        delete object[property];
+      }
+    },
+    parentForm: parentForm,
+    $animate: $animate
+  });
+
+  /**
+   * @ngdoc method
+   * @name form.FormController#$setDirty
+   *
+   * @description
+   * Sets the form to a dirty state.
+   *
+   * This method can be called to add the 'ng-dirty' class and set the form to a dirty
+   * state (ng-dirty class). This method will also propagate to parent forms.
+   */
+  form.$setDirty = function() {
+    $animate.removeClass(element, PRISTINE_CLASS);
+    $animate.addClass(element, DIRTY_CLASS);
+    form.$dirty = true;
+    form.$pristine = false;
+    parentForm.$setDirty();
+  };
+
+  /**
+   * @ngdoc method
+   * @name form.FormController#$setPristine
+   *
+   * @description
+   * Sets the form to its pristine state.
+   *
+   * This method can be called to remove the 'ng-dirty' class and set the form to its pristine
+   * state (ng-pristine class). This method will also propagate to all the controls contained
+   * in this form.
+   *
+   * Setting a form back to a pristine state is often useful when we want to 'reuse' a form after
+   * saving or resetting it.
+   */
+  form.$setPristine = function() {
+    $animate.setClass(element, PRISTINE_CLASS, DIRTY_CLASS + ' ' + SUBMITTED_CLASS);
+    form.$dirty = false;
+    form.$pristine = true;
+    form.$submitted = false;
+    forEach(controls, function(control) {
+      control.$setPristine();
+    });
+  };
+
+  /**
+   * @ngdoc method
+   * @name form.FormController#$setUntouched
+   *
+   * @description
+   * Sets the form to its untouched state.
+   *
+   * This method can be called to remove the 'ng-touched' class and set the form controls to their
+   * untouched state (ng-untouched class).
+   *
+   * Setting a form controls back to their untouched state is often useful when setting the form
+   * back to its pristine state.
+   */
+  form.$setUntouched = function() {
+    forEach(controls, function(control) {
+      control.$setUntouched();
+    });
+  };
+
+  /**
+   * @ngdoc method
+   * @name form.FormController#$setSubmitted
+   *
+   * @description
+   * Sets the form to its submitted state.
+   */
+  form.$setSubmitted = function() {
+    $animate.addClass(element, SUBMITTED_CLASS);
+    form.$submitted = true;
+    parentForm.$setSubmitted();
+  };
+}
+
+/**
+ * @ngdoc directive
+ * @name ngForm
+ * @restrict EAC
+ *
+ * @description
+ * Nestable alias of {@link ng.directive:form `form`} directive. HTML
+ * does not allow nesting of form elements. It is useful to nest forms, for example if the validity of a
+ * sub-group of controls needs to be determined.
+ *
+ * Note: the purpose of `ngForm` is to group controls,
+ * but not to be a replacement for the `<form>` tag with all of its capabilities
+ * (e.g. posting to the server, ...).
+ *
+ * @param {string=} ngForm|name Name of the form. If specified, the form controller will be published into
+ *                       related scope, under this name.
+ *
+ */
+
+ /**
+ * @ngdoc directive
+ * @name form
+ * @restrict E
+ *
+ * @description
+ * Directive that instantiates
+ * {@link form.FormController FormController}.
+ *
+ * If the `name` attribute is specified, the form controller is published onto the current scope under
+ * this name.
+ *
+ * # Alias: {@link ng.directive:ngForm `ngForm`}
+ *
+ * In Angular, forms can be nested. This means that the outer form is valid when all of the child
+ * forms are valid as well. However, browsers do not allow nesting of `<form>` elements, so
+ * Angular provides the {@link ng.directive:ngForm `ngForm`} directive which behaves identically to
+ * `<form>` but can be nested.  This allows you to have nested forms, which is very useful when
+ * using Angular validation directives in forms that are dynamically generated using the
+ * {@link ng.directive:ngRepeat `ngRepeat`} directive. Since you cannot dynamically generate the `name`
+ * attribute of input elements using interpolation, you have to wrap each set of repeated inputs in an
+ * `ngForm` directive and nest these in an outer `form` element.
+ *
+ *
+ * # CSS classes
+ *  - `ng-valid` is set if the form is valid.
+ *  - `ng-invalid` is set if the form is invalid.
+ *  - `ng-pristine` is set if the form is pristine.
+ *  - `ng-dirty` is set if the form is dirty.
+ *  - `ng-submitted` is set if the form was submitted.
+ *
+ * Keep in mind that ngAnimate can detect each of these classes when added and removed.
+ *
+ *
+ * # Submitting a form and preventing the default action
+ *
+ * Since the role of forms in client-side Angular applications is different than in classical
+ * roundtrip apps, it is desirable for the browser not to translate the form submission into a full
+ * page reload that sends the data to the server. Instead some javascript logic should be triggered
+ * to handle the form submission in an application-specific way.
+ *
+ * For this reason, Angular prevents the default action (form submission to the server) unless the
+ * `<form>` element has an `action` attribute specified.
+ *
+ * You can use one of the following two ways to specify what javascript method should be called when
+ * a form is submitted:
+ *
+ * - {@link ng.directive:ngSubmit ngSubmit} directive on the form element
+ * - {@link ng.directive:ngClick ngClick} directive on the first
+  *  button or input field of type submit (input[type=submit])
+ *
+ * To prevent double execution of the handler, use only one of the {@link ng.directive:ngSubmit ngSubmit}
+ * or {@link ng.directive:ngClick ngClick} directives.
+ * This is because of the following form submission rules in the HTML specification:
+ *
+ * - If a form has only one input field then hitting enter in this field triggers form submit
+ * (`ngSubmit`)
+ * - if a form has 2+ input fields and no buttons or input[type=submit] then hitting enter
+ * doesn't trigger submit
+ * - if a form has one or more input fields and one or more buttons or input[type=submit] then
+ * hitting enter in any of the input fields will trigger the click handler on the *first* button or
+ * input[type=submit] (`ngClick`) *and* a submit handler on the enclosing form (`ngSubmit`)
+ *
+ * Any pending `ngModelOptions` changes will take place immediately when an enclosing form is
+ * submitted. Note that `ngClick` events will occur before the model is updated. Use `ngSubmit`
+ * to have access to the updated model.
+ *
+ * ## Animation Hooks
+ *
+ * Animations in ngForm are triggered when any of the associated CSS classes are added and removed.
+ * These classes are: `.ng-pristine`, `.ng-dirty`, `.ng-invalid` and `.ng-valid` as well as any
+ * other validations that are performed within the form. Animations in ngForm are similar to how
+ * they work in ngClass and animations can be hooked into using CSS transitions, keyframes as well
+ * as JS animations.
+ *
+ * The following example shows a simple way to utilize CSS transitions to style a form element
+ * that has been rendered as invalid after it has been validated:
+ *
+ * <pre>
+ * //be sure to include ngAnimate as a module to hook into more
+ * //advanced animations
+ * .my-form {
+ *   transition:0.5s linear all;
+ *   background: white;
+ * }
+ * .my-form.ng-invalid {
+ *   background: red;
+ *   color:white;
+ * }
+ * </pre>
+ *
+ * @example
+    <example deps="angular-animate.js" animations="true" fixBase="true" module="formExample">
+      <file name="index.html">
+       <script>
+         angular.module('formExample', [])
+           .controller('FormController', ['$scope', function($scope) {
+             $scope.userType = 'guest';
+           }]);
+       </script>
+       <style>
+        .my-form {
+          -webkit-transition:all linear 0.5s;
+          transition:all linear 0.5s;
+          background: transparent;
+        }
+        .my-form.ng-invalid {
+          background: red;
+        }
+       </style>
+       <form name="myForm" ng-controller="FormController" class="my-form">
+         userType: <input name="input" ng-model="userType" required>
+         <span class="error" ng-show="myForm.input.$error.required">Required!</span><br>
+         <code>userType = {{userType}}</code><br>
+         <code>myForm.input.$valid = {{myForm.input.$valid}}</code><br>
+         <code>myForm.input.$error = {{myForm.input.$error}}</code><br>
+         <code>myForm.$valid = {{myForm.$valid}}</code><br>
+         <code>myForm.$error.required = {{!!myForm.$error.required}}</code><br>
+        </form>
+      </file>
+      <file name="protractor.js" type="protractor">
+        it('should initialize to model', function() {
+          var userType = element(by.binding('userType'));
+          var valid = element(by.binding('myForm.input.$valid'));
+
+          expect(userType.getText()).toContain('guest');
+          expect(valid.getText()).toContain('true');
+        });
+
+        it('should be invalid if empty', function() {
+          var userType = element(by.binding('userType'));
+          var valid = element(by.binding('myForm.input.$valid'));
+          var userInput = element(by.model('userType'));
+
+          userInput.clear();
+          userInput.sendKeys('');
+
+          expect(userType.getText()).toEqual('userType =');
+          expect(valid.getText()).toContain('false');
+        });
+      </file>
+    </example>
+ *
+ * @param {string=} name Name of the form. If specified, the form controller will be published into
+ *                       related scope, under this name.
+ */
+var formDirectiveFactory = function(isNgForm) {
+  return ['$timeout', function($timeout) {
+    var formDirective = {
+      name: 'form',
+      restrict: isNgForm ? 'EAC' : 'E',
+      controller: FormController,
+      compile: function ngFormCompile(formElement, attr) {
+        // Setup initial state of the control
+        formElement.addClass(PRISTINE_CLASS).addClass(VALID_CLASS);
+
+        var nameAttr = attr.name ? 'name' : (isNgForm && attr.ngForm ? 'ngForm' : false);
+
+        return {
+          pre: function ngFormPreLink(scope, formElement, attr, controller) {
+            // if `action` attr is not present on the form, prevent the default action (submission)
+            if (!('action' in attr)) {
+              // we can't use jq events because if a form is destroyed during submission the default
+              // action is not prevented. see #1238
+              //
+              // IE 9 is not affected because it doesn't fire a submit event and try to do a full
+              // page reload if the form was destroyed by submission of the form via a click handler
+              // on a button in the form. Looks like an IE9 specific bug.
+              var handleFormSubmission = function(event) {
+                scope.$apply(function() {
+                  controller.$commitViewValue();
+                  controller.$setSubmitted();
+                });
+
+                event.preventDefault();
+              };
+
+              addEventListenerFn(formElement[0], 'submit', handleFormSubmission);
+
+              // unregister the preventDefault listener so that we don't not leak memory but in a
+              // way that will achieve the prevention of the default action.
+              formElement.on('$destroy', function() {
+                $timeout(function() {
+                  removeEventListenerFn(formElement[0], 'submit', handleFormSubmission);
+                }, 0, false);
+              });
+            }
+
+            var parentFormCtrl = controller.$$parentForm;
+
+            if (nameAttr) {
+              setter(scope, null, controller.$name, controller, controller.$name);
+              attr.$observe(nameAttr, function(newValue) {
+                if (controller.$name === newValue) return;
+                setter(scope, null, controller.$name, undefined, controller.$name);
+                parentFormCtrl.$$renameControl(controller, newValue);
+                setter(scope, null, controller.$name, controller, controller.$name);
+              });
+            }
+            formElement.on('$destroy', function() {
+              parentFormCtrl.$removeControl(controller);
+              if (nameAttr) {
+                setter(scope, null, attr[nameAttr], undefined, controller.$name);
+              }
+              extend(controller, nullFormCtrl); //stop propagating child destruction handlers upwards
+            });
+          }
+        };
+      }
+    };
+
+    return formDirective;
+  }];
+};
+
+var formDirective = formDirectiveFactory();
+var ngFormDirective = formDirectiveFactory(true);
+
+/* global VALID_CLASS: false,
+  INVALID_CLASS: false,
+  PRISTINE_CLASS: false,
+  DIRTY_CLASS: false,
+  UNTOUCHED_CLASS: false,
+  TOUCHED_CLASS: false,
+  ngModelMinErr: false,
+*/
+
+// Regex code is obtained from SO: https://stackoverflow.com/questions/3143070/javascript-regex-iso-datetime#answer-3143231
+var ISO_DATE_REGEXP = /\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d:[0-5]\d\.\d+([+-][0-2]\d:[0-5]\d|Z)/;
+var URL_REGEXP = /^(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?$/;
+var EMAIL_REGEXP = /^[a-z0-9!#$%&'*+\/=?^_`{|}~.-]+@[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$/i;
+var NUMBER_REGEXP = /^\s*(\-|\+)?(\d+|(\d*(\.\d*)))\s*$/;
+var DATE_REGEXP = /^(\d{4})-(\d{2})-(\d{2})$/;
+var DATETIMELOCAL_REGEXP = /^(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d)(?::(\d\d)(\.\d{1,3})?)?$/;
+var WEEK_REGEXP = /^(\d{4})-W(\d\d)$/;
+var MONTH_REGEXP = /^(\d{4})-(\d\d)$/;
+var TIME_REGEXP = /^(\d\d):(\d\d)(?::(\d\d)(\.\d{1,3})?)?$/;
+
+var inputType = {
+
+  /**
+   * @ngdoc input
+   * @name input[text]
+   *
+   * @description
+   * Standard HTML text input with angular data binding, inherited by most of the `input` elements.
+   *
+   *
+   * @param {string} ngModel Assignable angular expression to data-bind to.
+   * @param {string=} name Property name of the form under which the control is published.
+   * @param {string=} required Adds `required` validation error key if the value is not entered.
+   * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+   *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+   *    `required` when you want to data-bind to the `required` attribute.
+   * @param {number=} ngMinlength Sets `minlength` validation error key if the value is shorter than
+   *    minlength.
+   * @param {number=} ngMaxlength Sets `maxlength` validation error key if the value is longer than
+   *    maxlength. Setting the attribute to a negative or non-numeric value, allows view values of
+   *    any length.
+   * @param {string=} pattern Similar to `ngPattern` except that the attribute value is the actual string
+   *    that contains the regular expression body that will be converted to a regular expression
+   *    as in the ngPattern directive.
+   * @param {string=} ngPattern Sets `pattern` validation error key if the ngModel value does not match
+   *    a RegExp found by evaluating the Angular expression given in the attribute value.
+   *    If the expression evaluates to a RegExp object then this is used directly.
+   *    If the expression is a string then it will be converted to a RegExp after wrapping it in `^` and `$`
+   *    characters. For instance, `"abc"` will be converted to `new RegExp('^abc$')`.
+   * @param {string=} ngChange Angular expression to be executed when input changes due to user
+   *    interaction with the input element.
+   * @param {boolean=} [ngTrim=true] If set to false Angular will not automatically trim the input.
+   *    This parameter is ignored for input[type=password] controls, which will never trim the
+   *    input.
+   *
+   * @example
+      <example name="text-input-directive" module="textInputExample">
+        <file name="index.html">
+         <script>
+           angular.module('textInputExample', [])
+             .controller('ExampleController', ['$scope', function($scope) {
+               $scope.example = {
+                 text: 'guest',
+                 word: /^\s*\w*\s*$/
+               };
+             }]);
+         </script>
+         <form name="myForm" ng-controller="ExampleController">
+           Single word: <input type="text" name="input" ng-model="example.text"
+                               ng-pattern="example.word" required ng-trim="false">
+           <span class="error" ng-show="myForm.input.$error.required">
+             Required!</span>
+           <span class="error" ng-show="myForm.input.$error.pattern">
+             Single word only!</span>
+
+           <tt>text = {{example.text}}</tt><br/>
+           <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+           <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+           <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+           <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+          </form>
+        </file>
+        <file name="protractor.js" type="protractor">
+          var text = element(by.binding('example.text'));
+          var valid = element(by.binding('myForm.input.$valid'));
+          var input = element(by.model('example.text'));
+
+          it('should initialize to model', function() {
+            expect(text.getText()).toContain('guest');
+            expect(valid.getText()).toContain('true');
+          });
+
+          it('should be invalid if empty', function() {
+            input.clear();
+            input.sendKeys('');
+
+            expect(text.getText()).toEqual('text =');
+            expect(valid.getText()).toContain('false');
+          });
+
+          it('should be invalid if multi word', function() {
+            input.clear();
+            input.sendKeys('hello world');
+
+            expect(valid.getText()).toContain('false');
+          });
+        </file>
+      </example>
+   */
+  'text': textInputType,
+
+    /**
+     * @ngdoc input
+     * @name input[date]
+     *
+     * @description
+     * Input with date validation and transformation. In browsers that do not yet support
+     * the HTML5 date input, a text element will be used. In that case, text must be entered in a valid ISO-8601
+     * date format (yyyy-MM-dd), for example: `2009-01-06`. Since many
+     * modern browsers do not yet support this input type, it is important to provide cues to users on the
+     * expected input format via a placeholder or label.
+     *
+     * The model must always be a Date object, otherwise Angular will throw an error.
+     * Invalid `Date` objects (dates whose `getTime()` is `NaN`) will be rendered as an empty string.
+     *
+     * The timezone to be used to read/write the `Date` instance in the model can be defined using
+     * {@link ng.directive:ngModelOptions ngModelOptions}. By default, this is the timezone of the browser.
+     *
+     * @param {string} ngModel Assignable angular expression to data-bind to.
+     * @param {string=} name Property name of the form under which the control is published.
+     * @param {string=} min Sets the `min` validation error key if the value entered is less than `min`. This must be a
+     * valid ISO date string (yyyy-MM-dd).
+     * @param {string=} max Sets the `max` validation error key if the value entered is greater than `max`. This must be
+     * a valid ISO date string (yyyy-MM-dd).
+     * @param {string=} required Sets `required` validation error key if the value is not entered.
+     * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+     *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+     *    `required` when you want to data-bind to the `required` attribute.
+     * @param {string=} ngChange Angular expression to be executed when input changes due to user
+     *    interaction with the input element.
+     *
+     * @example
+     <example name="date-input-directive" module="dateInputExample">
+     <file name="index.html">
+       <script>
+          angular.module('dateInputExample', [])
+            .controller('DateController', ['$scope', function($scope) {
+              $scope.example = {
+                value: new Date(2013, 9, 22)
+              };
+            }]);
+       </script>
+       <form name="myForm" ng-controller="DateController as dateCtrl">
+          Pick a date in 2013:
+          <input type="date" id="exampleInput" name="input" ng-model="example.value"
+              placeholder="yyyy-MM-dd" min="2013-01-01" max="2013-12-31" required />
+          <span class="error" ng-show="myForm.input.$error.required">
+              Required!</span>
+          <span class="error" ng-show="myForm.input.$error.date">
+              Not a valid date!</span>
+           <tt>value = {{example.value | date: "yyyy-MM-dd"}}</tt><br/>
+           <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+           <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+           <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+           <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+       </form>
+     </file>
+     <file name="protractor.js" type="protractor">
+        var value = element(by.binding('example.value | date: "yyyy-MM-dd"'));
+        var valid = element(by.binding('myForm.input.$valid'));
+        var input = element(by.model('example.value'));
+
+        // currently protractor/webdriver does not support
+        // sending keys to all known HTML5 input controls
+        // for various browsers (see https://github.com/angular/protractor/issues/562).
+        function setInput(val) {
+          // set the value of the element and force validation.
+          var scr = "var ipt = document.getElementById('exampleInput'); " +
+          "ipt.value = '" + val + "';" +
+          "angular.element(ipt).scope().$apply(function(s) { s.myForm[ipt.name].$setViewValue('" + val + "'); });";
+          browser.executeScript(scr);
+        }
+
+        it('should initialize to model', function() {
+          expect(value.getText()).toContain('2013-10-22');
+          expect(valid.getText()).toContain('myForm.input.$valid = true');
+        });
+
+        it('should be invalid if empty', function() {
+          setInput('');
+          expect(value.getText()).toEqual('value =');
+          expect(valid.getText()).toContain('myForm.input.$valid = false');
+        });
+
+        it('should be invalid if over max', function() {
+          setInput('2015-01-01');
+          expect(value.getText()).toContain('');
+          expect(valid.getText()).toContain('myForm.input.$valid = false');
+        });
+     </file>
+     </example>
+     */
+  'date': createDateInputType('date', DATE_REGEXP,
+         createDateParser(DATE_REGEXP, ['yyyy', 'MM', 'dd']),
+         'yyyy-MM-dd'),
+
+   /**
+    * @ngdoc input
+    * @name input[datetime-local]
+    *
+    * @description
+    * Input with datetime validation and transformation. In browsers that do not yet support
+    * the HTML5 date input, a text element will be used. In that case, the text must be entered in a valid ISO-8601
+    * local datetime format (yyyy-MM-ddTHH:mm:ss), for example: `2010-12-28T14:57:00`.
+    *
+    * The model must always be a Date object, otherwise Angular will throw an error.
+    * Invalid `Date` objects (dates whose `getTime()` is `NaN`) will be rendered as an empty string.
+    *
+    * The timezone to be used to read/write the `Date` instance in the model can be defined using
+    * {@link ng.directive:ngModelOptions ngModelOptions}. By default, this is the timezone of the browser.
+    *
+    * @param {string} ngModel Assignable angular expression to data-bind to.
+    * @param {string=} name Property name of the form under which the control is published.
+    * @param {string=} min Sets the `min` validation error key if the value entered is less than `min`. This must be a
+    * valid ISO datetime format (yyyy-MM-ddTHH:mm:ss).
+    * @param {string=} max Sets the `max` validation error key if the value entered is greater than `max`. This must be
+    * a valid ISO datetime format (yyyy-MM-ddTHH:mm:ss).
+    * @param {string=} required Sets `required` validation error key if the value is not entered.
+    * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+    *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+    *    `required` when you want to data-bind to the `required` attribute.
+    * @param {string=} ngChange Angular expression to be executed when input changes due to user
+    *    interaction with the input element.
+    *
+    * @example
+    <example name="datetimelocal-input-directive" module="dateExample">
+    <file name="index.html">
+      <script>
+        angular.module('dateExample', [])
+          .controller('DateController', ['$scope', function($scope) {
+            $scope.example = {
+              value: new Date(2010, 11, 28, 14, 57)
+            };
+          }]);
+      </script>
+      <form name="myForm" ng-controller="DateController as dateCtrl">
+        Pick a date between in 2013:
+        <input type="datetime-local" id="exampleInput" name="input" ng-model="example.value"
+            placeholder="yyyy-MM-ddTHH:mm:ss" min="2001-01-01T00:00:00" max="2013-12-31T00:00:00" required />
+        <span class="error" ng-show="myForm.input.$error.required">
+            Required!</span>
+        <span class="error" ng-show="myForm.input.$error.datetimelocal">
+            Not a valid date!</span>
+        <tt>value = {{example.value | date: "yyyy-MM-ddTHH:mm:ss"}}</tt><br/>
+        <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+        <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+        <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+        <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+      </form>
+    </file>
+    <file name="protractor.js" type="protractor">
+      var value = element(by.binding('example.value | date: "yyyy-MM-ddTHH:mm:ss"'));
+      var valid = element(by.binding('myForm.input.$valid'));
+      var input = element(by.model('example.value'));
+
+      // currently protractor/webdriver does not support
+      // sending keys to all known HTML5 input controls
+      // for various browsers (https://github.com/angular/protractor/issues/562).
+      function setInput(val) {
+        // set the value of the element and force validation.
+        var scr = "var ipt = document.getElementById('exampleInput'); " +
+        "ipt.value = '" + val + "';" +
+        "angular.element(ipt).scope().$apply(function(s) { s.myForm[ipt.name].$setViewValue('" + val + "'); });";
+        browser.executeScript(scr);
+      }
+
+      it('should initialize to model', function() {
+        expect(value.getText()).toContain('2010-12-28T14:57:00');
+        expect(valid.getText()).toContain('myForm.input.$valid = true');
+      });
+
+      it('should be invalid if empty', function() {
+        setInput('');
+        expect(value.getText()).toEqual('value =');
+        expect(valid.getText()).toContain('myForm.input.$valid = false');
+      });
+
+      it('should be invalid if over max', function() {
+        setInput('2015-01-01T23:59:00');
+        expect(value.getText()).toContain('');
+        expect(valid.getText()).toContain('myForm.input.$valid = false');
+      });
+    </file>
+    </example>
+    */
+  'datetime-local': createDateInputType('datetimelocal', DATETIMELOCAL_REGEXP,
+      createDateParser(DATETIMELOCAL_REGEXP, ['yyyy', 'MM', 'dd', 'HH', 'mm', 'ss', 'sss']),
+      'yyyy-MM-ddTHH:mm:ss.sss'),
+
+  /**
+   * @ngdoc input
+   * @name input[time]
+   *
+   * @description
+   * Input with time validation and transformation. In browsers that do not yet support
+   * the HTML5 date input, a text element will be used. In that case, the text must be entered in a valid ISO-8601
+   * local time format (HH:mm:ss), for example: `14:57:00`. Model must be a Date object. This binding will always output a
+   * Date object to the model of January 1, 1970, or local date `new Date(1970, 0, 1, HH, mm, ss)`.
+   *
+   * The model must always be a Date object, otherwise Angular will throw an error.
+   * Invalid `Date` objects (dates whose `getTime()` is `NaN`) will be rendered as an empty string.
+   *
+   * The timezone to be used to read/write the `Date` instance in the model can be defined using
+   * {@link ng.directive:ngModelOptions ngModelOptions}. By default, this is the timezone of the browser.
+   *
+   * @param {string} ngModel Assignable angular expression to data-bind to.
+   * @param {string=} name Property name of the form under which the control is published.
+   * @param {string=} min Sets the `min` validation error key if the value entered is less than `min`. This must be a
+   * valid ISO time format (HH:mm:ss).
+   * @param {string=} max Sets the `max` validation error key if the value entered is greater than `max`. This must be a
+   * valid ISO time format (HH:mm:ss).
+   * @param {string=} required Sets `required` validation error key if the value is not entered.
+   * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+   *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+   *    `required` when you want to data-bind to the `required` attribute.
+   * @param {string=} ngChange Angular expression to be executed when input changes due to user
+   *    interaction with the input element.
+   *
+   * @example
+   <example name="time-input-directive" module="timeExample">
+   <file name="index.html">
+     <script>
+      angular.module('timeExample', [])
+        .controller('DateController', ['$scope', function($scope) {
+          $scope.example = {
+            value: new Date(1970, 0, 1, 14, 57, 0)
+          };
+        }]);
+     </script>
+     <form name="myForm" ng-controller="DateController as dateCtrl">
+        Pick a between 8am and 5pm:
+        <input type="time" id="exampleInput" name="input" ng-model="example.value"
+            placeholder="HH:mm:ss" min="08:00:00" max="17:00:00" required />
+        <span class="error" ng-show="myForm.input.$error.required">
+            Required!</span>
+        <span class="error" ng-show="myForm.input.$error.time">
+            Not a valid date!</span>
+        <tt>value = {{example.value | date: "HH:mm:ss"}}</tt><br/>
+        <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+        <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+        <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+        <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+     </form>
+   </file>
+   <file name="protractor.js" type="protractor">
+      var value = element(by.binding('example.value | date: "HH:mm:ss"'));
+      var valid = element(by.binding('myForm.input.$valid'));
+      var input = element(by.model('example.value'));
+
+      // currently protractor/webdriver does not support
+      // sending keys to all known HTML5 input controls
+      // for various browsers (https://github.com/angular/protractor/issues/562).
+      function setInput(val) {
+        // set the value of the element and force validation.
+        var scr = "var ipt = document.getElementById('exampleInput'); " +
+        "ipt.value = '" + val + "';" +
+        "angular.element(ipt).scope().$apply(function(s) { s.myForm[ipt.name].$setViewValue('" + val + "'); });";
+        browser.executeScript(scr);
+      }
+
+      it('should initialize to model', function() {
+        expect(value.getText()).toContain('14:57:00');
+        expect(valid.getText()).toContain('myForm.input.$valid = true');
+      });
+
+      it('should be invalid if empty', function() {
+        setInput('');
+        expect(value.getText()).toEqual('value =');
+        expect(valid.getText()).toContain('myForm.input.$valid = false');
+      });
+
+      it('should be invalid if over max', function() {
+        setInput('23:59:00');
+        expect(value.getText()).toContain('');
+        expect(valid.getText()).toContain('myForm.input.$valid = false');
+      });
+   </file>
+   </example>
+   */
+  'time': createDateInputType('time', TIME_REGEXP,
+      createDateParser(TIME_REGEXP, ['HH', 'mm', 'ss', 'sss']),
+     'HH:mm:ss.sss'),
+
+   /**
+    * @ngdoc input
+    * @name input[week]
+    *
+    * @description
+    * Input with week-of-the-year validation and transformation to Date. In browsers that do not yet support
+    * the HTML5 week input, a text element will be used. In that case, the text must be entered in a valid ISO-8601
+    * week format (yyyy-W##), for example: `2013-W02`.
+    *
+    * The model must always be a Date object, otherwise Angular will throw an error.
+    * Invalid `Date` objects (dates whose `getTime()` is `NaN`) will be rendered as an empty string.
+    *
+    * The timezone to be used to read/write the `Date` instance in the model can be defined using
+    * {@link ng.directive:ngModelOptions ngModelOptions}. By default, this is the timezone of the browser.
+    *
+    * @param {string} ngModel Assignable angular expression to data-bind to.
+    * @param {string=} name Property name of the form under which the control is published.
+    * @param {string=} min Sets the `min` validation error key if the value entered is less than `min`. This must be a
+    * valid ISO week format (yyyy-W##).
+    * @param {string=} max Sets the `max` validation error key if the value entered is greater than `max`. This must be
+    * a valid ISO week format (yyyy-W##).
+    * @param {string=} required Sets `required` validation error key if the value is not entered.
+    * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+    *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+    *    `required` when you want to data-bind to the `required` attribute.
+    * @param {string=} ngChange Angular expression to be executed when input changes due to user
+    *    interaction with the input element.
+    *
+    * @example
+    <example name="week-input-directive" module="weekExample">
+    <file name="index.html">
+      <script>
+      angular.module('weekExample', [])
+        .controller('DateController', ['$scope', function($scope) {
+          $scope.example = {
+            value: new Date(2013, 0, 3)
+          };
+        }]);
+      </script>
+      <form name="myForm" ng-controller="DateController as dateCtrl">
+        Pick a date between in 2013:
+        <input id="exampleInput" type="week" name="input" ng-model="example.value"
+            placeholder="YYYY-W##" min="2012-W32" max="2013-W52" required />
+        <span class="error" ng-show="myForm.input.$error.required">
+            Required!</span>
+        <span class="error" ng-show="myForm.input.$error.week">
+            Not a valid date!</span>
+        <tt>value = {{example.value | date: "yyyy-Www"}}</tt><br/>
+        <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+        <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+        <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+        <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+      </form>
+    </file>
+    <file name="protractor.js" type="protractor">
+      var value = element(by.binding('example.value | date: "yyyy-Www"'));
+      var valid = element(by.binding('myForm.input.$valid'));
+      var input = element(by.model('example.value'));
+
+      // currently protractor/webdriver does not support
+      // sending keys to all known HTML5 input controls
+      // for various browsers (https://github.com/angular/protractor/issues/562).
+      function setInput(val) {
+        // set the value of the element and force validation.
+        var scr = "var ipt = document.getElementById('exampleInput'); " +
+        "ipt.value = '" + val + "';" +
+        "angular.element(ipt).scope().$apply(function(s) { s.myForm[ipt.name].$setViewValue('" + val + "'); });";
+        browser.executeScript(scr);
+      }
+
+      it('should initialize to model', function() {
+        expect(value.getText()).toContain('2013-W01');
+        expect(valid.getText()).toContain('myForm.input.$valid = true');
+      });
+
+      it('should be invalid if empty', function() {
+        setInput('');
+        expect(value.getText()).toEqual('value =');
+        expect(valid.getText()).toContain('myForm.input.$valid = false');
+      });
+
+      it('should be invalid if over max', function() {
+        setInput('2015-W01');
+        expect(value.getText()).toContain('');
+        expect(valid.getText()).toContain('myForm.input.$valid = false');
+      });
+    </file>
+    </example>
+    */
+  'week': createDateInputType('week', WEEK_REGEXP, weekParser, 'yyyy-Www'),
+
+  /**
+   * @ngdoc input
+   * @name input[month]
+   *
+   * @description
+   * Input with month validation and transformation. In browsers that do not yet support
+   * the HTML5 month input, a text element will be used. In that case, the text must be entered in a valid ISO-8601
+   * month format (yyyy-MM), for example: `2009-01`.
+   *
+   * The model must always be a Date object, otherwise Angular will throw an error.
+   * Invalid `Date` objects (dates whose `getTime()` is `NaN`) will be rendered as an empty string.
+   * If the model is not set to the first of the month, the next view to model update will set it
+   * to the first of the month.
+   *
+   * The timezone to be used to read/write the `Date` instance in the model can be defined using
+   * {@link ng.directive:ngModelOptions ngModelOptions}. By default, this is the timezone of the browser.
+   *
+   * @param {string} ngModel Assignable angular expression to data-bind to.
+   * @param {string=} name Property name of the form under which the control is published.
+   * @param {string=} min Sets the `min` validation error key if the value entered is less than `min`. This must be
+   * a valid ISO month format (yyyy-MM).
+   * @param {string=} max Sets the `max` validation error key if the value entered is greater than `max`. This must
+   * be a valid ISO month format (yyyy-MM).
+   * @param {string=} required Sets `required` validation error key if the value is not entered.
+   * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+   *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+   *    `required` when you want to data-bind to the `required` attribute.
+   * @param {string=} ngChange Angular expression to be executed when input changes due to user
+   *    interaction with the input element.
+   *
+   * @example
+   <example name="month-input-directive" module="monthExample">
+   <file name="index.html">
+     <script>
+      angular.module('monthExample', [])
+        .controller('DateController', ['$scope', function($scope) {
+          $scope.example = {
+            value: new Date(2013, 9, 1)
+          };
+        }]);
+     </script>
+     <form name="myForm" ng-controller="DateController as dateCtrl">
+       Pick a month in 2013:
+       <input id="exampleInput" type="month" name="input" ng-model="example.value"
+          placeholder="yyyy-MM" min="2013-01" max="2013-12" required />
+       <span class="error" ng-show="myForm.input.$error.required">
+          Required!</span>
+       <span class="error" ng-show="myForm.input.$error.month">
+          Not a valid month!</span>
+       <tt>value = {{example.value | date: "yyyy-MM"}}</tt><br/>
+       <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+       <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+       <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+       <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+     </form>
+   </file>
+   <file name="protractor.js" type="protractor">
+      var value = element(by.binding('example.value | date: "yyyy-MM"'));
+      var valid = element(by.binding('myForm.input.$valid'));
+      var input = element(by.model('example.value'));
+
+      // currently protractor/webdriver does not support
+      // sending keys to all known HTML5 input controls
+      // for various browsers (https://github.com/angular/protractor/issues/562).
+      function setInput(val) {
+        // set the value of the element and force validation.
+        var scr = "var ipt = document.getElementById('exampleInput'); " +
+        "ipt.value = '" + val + "';" +
+        "angular.element(ipt).scope().$apply(function(s) { s.myForm[ipt.name].$setViewValue('" + val + "'); });";
+        browser.executeScript(scr);
+      }
+
+      it('should initialize to model', function() {
+        expect(value.getText()).toContain('2013-10');
+        expect(valid.getText()).toContain('myForm.input.$valid = true');
+      });
+
+      it('should be invalid if empty', function() {
+        setInput('');
+        expect(value.getText()).toEqual('value =');
+        expect(valid.getText()).toContain('myForm.input.$valid = false');
+      });
+
+      it('should be invalid if over max', function() {
+        setInput('2015-01');
+        expect(value.getText()).toContain('');
+        expect(valid.getText()).toContain('myForm.input.$valid = false');
+      });
+   </file>
+   </example>
+   */
+  'month': createDateInputType('month', MONTH_REGEXP,
+     createDateParser(MONTH_REGEXP, ['yyyy', 'MM']),
+     'yyyy-MM'),
+
+  /**
+   * @ngdoc input
+   * @name input[number]
+   *
+   * @description
+   * Text input with number validation and transformation. Sets the `number` validation
+   * error if not a valid number.
+   *
+   * <div class="alert alert-warning">
+   * The model must always be of type `number` otherwise Angular will throw an error.
+   * Be aware that a string containing a number is not enough. See the {@link ngModel:numfmt}
+   * error docs for more information and an example of how to convert your model if necessary.
+   * </div>
+   *
+   * @param {string} ngModel Assignable angular expression to data-bind to.
+   * @param {string=} name Property name of the form under which the control is published.
+   * @param {string=} min Sets the `min` validation error key if the value entered is less than `min`.
+   * @param {string=} max Sets the `max` validation error key if the value entered is greater than `max`.
+   * @param {string=} required Sets `required` validation error key if the value is not entered.
+   * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+   *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+   *    `required` when you want to data-bind to the `required` attribute.
+   * @param {number=} ngMinlength Sets `minlength` validation error key if the value is shorter than
+   *    minlength.
+   * @param {number=} ngMaxlength Sets `maxlength` validation error key if the value is longer than
+   *    maxlength. Setting the attribute to a negative or non-numeric value, allows view values of
+   *    any length.
+   * @param {string=} pattern Similar to `ngPattern` except that the attribute value is the actual string
+   *    that contains the regular expression body that will be converted to a regular expression
+   *    as in the ngPattern directive.
+   * @param {string=} ngPattern Sets `pattern` validation error key if the ngModel value does not match
+   *    a RegExp found by evaluating the Angular expression given in the attribute value.
+   *    If the expression evaluates to a RegExp object then this is used directly.
+   *    If the expression is a string then it will be converted to a RegExp after wrapping it in `^` and `$`
+   *    characters. For instance, `"abc"` will be converted to `new RegExp('^abc$')`.
+   * @param {string=} ngChange Angular expression to be executed when input changes due to user
+   *    interaction with the input element.
+   *
+   * @example
+      <example name="number-input-directive" module="numberExample">
+        <file name="index.html">
+         <script>
+           angular.module('numberExample', [])
+             .controller('ExampleController', ['$scope', function($scope) {
+               $scope.example = {
+                 value: 12
+               };
+             }]);
+         </script>
+         <form name="myForm" ng-controller="ExampleController">
+           Number: <input type="number" name="input" ng-model="example.value"
+                          min="0" max="99" required>
+           <span class="error" ng-show="myForm.input.$error.required">
+             Required!</span>
+           <span class="error" ng-show="myForm.input.$error.number">
+             Not valid number!</span>
+           <tt>value = {{example.value}}</tt><br/>
+           <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+           <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+           <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+           <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+          </form>
+        </file>
+        <file name="protractor.js" type="protractor">
+          var value = element(by.binding('example.value'));
+          var valid = element(by.binding('myForm.input.$valid'));
+          var input = element(by.model('example.value'));
+
+          it('should initialize to model', function() {
+            expect(value.getText()).toContain('12');
+            expect(valid.getText()).toContain('true');
+          });
+
+          it('should be invalid if empty', function() {
+            input.clear();
+            input.sendKeys('');
+            expect(value.getText()).toEqual('value =');
+            expect(valid.getText()).toContain('false');
+          });
+
+          it('should be invalid if over max', function() {
+            input.clear();
+            input.sendKeys('123');
+            expect(value.getText()).toEqual('value =');
+            expect(valid.getText()).toContain('false');
+          });
+        </file>
+      </example>
+   */
+  'number': numberInputType,
+
+
+  /**
+   * @ngdoc input
+   * @name input[url]
+   *
+   * @description
+   * Text input with URL validation. Sets the `url` validation error key if the content is not a
+   * valid URL.
+   *
+   * <div class="alert alert-warning">
+   * **Note:** `input[url]` uses a regex to validate urls that is derived from the regex
+   * used in Chromium. If you need stricter validation, you can use `ng-pattern` or modify
+   * the built-in validators (see the {@link guide/forms Forms guide})
+   * </div>
+   *
+   * @param {string} ngModel Assignable angular expression to data-bind to.
+   * @param {string=} name Property name of the form under which the control is published.
+   * @param {string=} required Sets `required` validation error key if the value is not entered.
+   * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+   *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+   *    `required` when you want to data-bind to the `required` attribute.
+   * @param {number=} ngMinlength Sets `minlength` validation error key if the value is shorter than
+   *    minlength.
+   * @param {number=} ngMaxlength Sets `maxlength` validation error key if the value is longer than
+   *    maxlength. Setting the attribute to a negative or non-numeric value, allows view values of
+   *    any length.
+   * @param {string=} pattern Similar to `ngPattern` except that the attribute value is the actual string
+   *    that contains the regular expression body that will be converted to a regular expression
+   *    as in the ngPattern directive.
+   * @param {string=} ngPattern Sets `pattern` validation error key if the ngModel value does not match
+   *    a RegExp found by evaluating the Angular expression given in the attribute value.
+   *    If the expression evaluates to a RegExp object then this is used directly.
+   *    If the expression is a string then it will be converted to a RegExp after wrapping it in `^` and `$`
+   *    characters. For instance, `"abc"` will be converted to `new RegExp('^abc$')`.
+   * @param {string=} ngChange Angular expression to be executed when input changes due to user
+   *    interaction with the input element.
+   *
+   * @example
+      <example name="url-input-directive" module="urlExample">
+        <file name="index.html">
+         <script>
+           angular.module('urlExample', [])
+             .controller('ExampleController', ['$scope', function($scope) {
+               $scope.url = {
+                 text: 'http://google.com'
+               };
+             }]);
+         </script>
+         <form name="myForm" ng-controller="ExampleController">
+           URL: <input type="url" name="input" ng-model="url.text" required>
+           <span class="error" ng-show="myForm.input.$error.required">
+             Required!</span>
+           <span class="error" ng-show="myForm.input.$error.url">
+             Not valid url!</span>
+           <tt>text = {{url.text}}</tt><br/>
+           <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+           <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+           <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+           <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+           <tt>myForm.$error.url = {{!!myForm.$error.url}}</tt><br/>
+          </form>
+        </file>
+        <file name="protractor.js" type="protractor">
+          var text = element(by.binding('url.text'));
+          var valid = element(by.binding('myForm.input.$valid'));
+          var input = element(by.model('url.text'));
+
+          it('should initialize to model', function() {
+            expect(text.getText()).toContain('http://google.com');
+            expect(valid.getText()).toContain('true');
+          });
+
+          it('should be invalid if empty', function() {
+            input.clear();
+            input.sendKeys('');
+
+            expect(text.getText()).toEqual('text =');
+            expect(valid.getText()).toContain('false');
+          });
+
+          it('should be invalid if not url', function() {
+            input.clear();
+            input.sendKeys('box');
+
+            expect(valid.getText()).toContain('false');
+          });
+        </file>
+      </example>
+   */
+  'url': urlInputType,
+
+
+  /**
+   * @ngdoc input
+   * @name input[email]
+   *
+   * @description
+   * Text input with email validation. Sets the `email` validation error key if not a valid email
+   * address.
+   *
+   * <div class="alert alert-warning">
+   * **Note:** `input[email]` uses a regex to validate email addresses that is derived from the regex
+   * used in Chromium. If you need stricter validation (e.g. requiring a top-level domain), you can
+   * use `ng-pattern` or modify the built-in validators (see the {@link guide/forms Forms guide})
+   * </div>
+   *
+   * @param {string} ngModel Assignable angular expression to data-bind to.
+   * @param {string=} name Property name of the form under which the control is published.
+   * @param {string=} required Sets `required` validation error key if the value is not entered.
+   * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+   *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+   *    `required` when you want to data-bind to the `required` attribute.
+   * @param {number=} ngMinlength Sets `minlength` validation error key if the value is shorter than
+   *    minlength.
+   * @param {number=} ngMaxlength Sets `maxlength` validation error key if the value is longer than
+   *    maxlength. Setting the attribute to a negative or non-numeric value, allows view values of
+   *    any length.
+   * @param {string=} pattern Similar to `ngPattern` except that the attribute value is the actual string
+   *    that contains the regular expression body that will be converted to a regular expression
+   *    as in the ngPattern directive.
+   * @param {string=} ngPattern Sets `pattern` validation error key if the ngModel value does not match
+   *    a RegExp found by evaluating the Angular expression given in the attribute value.
+   *    If the expression evaluates to a RegExp object then this is used directly.
+   *    If the expression is a string then it will be converted to a RegExp after wrapping it in `^` and `$`
+   *    characters. For instance, `"abc"` will be converted to `new RegExp('^abc$')`.
+   * @param {string=} ngChange Angular expression to be executed when input changes due to user
+   *    interaction with the input element.
+   *
+   * @example
+      <example name="email-input-directive" module="emailExample">
+        <file name="index.html">
+         <script>
+           angular.module('emailExample', [])
+             .controller('ExampleController', ['$scope', function($scope) {
+               $scope.email = {
+                 text: 'me@example.com'
+               };
+             }]);
+         </script>
+           <form name="myForm" ng-controller="ExampleController">
+             Email: <input type="email" name="input" ng-model="email.text" required>
+             <span class="error" ng-show="myForm.input.$error.required">
+               Required!</span>
+             <span class="error" ng-show="myForm.input.$error.email">
+               Not valid email!</span>
+             <tt>text = {{email.text}}</tt><br/>
+             <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+             <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+             <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+             <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+             <tt>myForm.$error.email = {{!!myForm.$error.email}}</tt><br/>
+           </form>
+         </file>
+        <file name="protractor.js" type="protractor">
+          var text = element(by.binding('email.text'));
+          var valid = element(by.binding('myForm.input.$valid'));
+          var input = element(by.model('email.text'));
+
+          it('should initialize to model', function() {
+            expect(text.getText()).toContain('me@example.com');
+            expect(valid.getText()).toContain('true');
+          });
+
+          it('should be invalid if empty', function() {
+            input.clear();
+            input.sendKeys('');
+            expect(text.getText()).toEqual('text =');
+            expect(valid.getText()).toContain('false');
+          });
+
+          it('should be invalid if not email', function() {
+            input.clear();
+            input.sendKeys('xxx');
+
+            expect(valid.getText()).toContain('false');
+          });
+        </file>
+      </example>
+   */
+  'email': emailInputType,
+
+
+  /**
+   * @ngdoc input
+   * @name input[radio]
+   *
+   * @description
+   * HTML radio button.
+   *
+   * @param {string} ngModel Assignable angular expression to data-bind to.
+   * @param {string} value The value to which the expression should be set when selected.
+   * @param {string=} name Property name of the form under which the control is published.
+   * @param {string=} ngChange Angular expression to be executed when input changes due to user
+   *    interaction with the input element.
+   * @param {string} ngValue Angular expression which sets the value to which the expression should
+   *    be set when selected.
+   *
+   * @example
+      <example name="radio-input-directive" module="radioExample">
+        <file name="index.html">
+         <script>
+           angular.module('radioExample', [])
+             .controller('ExampleController', ['$scope', function($scope) {
+               $scope.color = {
+                 name: 'blue'
+               };
+               $scope.specialValue = {
+                 "id": "12345",
+                 "value": "green"
+               };
+             }]);
+         </script>
+         <form name="myForm" ng-controller="ExampleController">
+           <input type="radio" ng-model="color.name" value="red">  Red <br/>
+           <input type="radio" ng-model="color.name" ng-value="specialValue"> Green <br/>
+           <input type="radio" ng-model="color.name" value="blue"> Blue <br/>
+           <tt>color = {{color.name | json}}</tt><br/>
+          </form>
+          Note that `ng-value="specialValue"` sets radio item's value to be the value of `$scope.specialValue`.
+        </file>
+        <file name="protractor.js" type="protractor">
+          it('should change state', function() {
+            var color = element(by.binding('color.name'));
+
+            expect(color.getText()).toContain('blue');
+
+            element.all(by.model('color.name')).get(0).click();
+
+            expect(color.getText()).toContain('red');
+          });
+        </file>
+      </example>
+   */
+  'radio': radioInputType,
+
+
+  /**
+   * @ngdoc input
+   * @name input[checkbox]
+   *
+   * @description
+   * HTML checkbox.
+   *
+   * @param {string} ngModel Assignable angular expression to data-bind to.
+   * @param {string=} name Property name of the form under which the control is published.
+   * @param {expression=} ngTrueValue The value to which the expression should be set when selected.
+   * @param {expression=} ngFalseValue The value to which the expression should be set when not selected.
+   * @param {string=} ngChange Angular expression to be executed when input changes due to user
+   *    interaction with the input element.
+   *
+   * @example
+      <example name="checkbox-input-directive" module="checkboxExample">
+        <file name="index.html">
+         <script>
+           angular.module('checkboxExample', [])
+             .controller('ExampleController', ['$scope', function($scope) {
+               $scope.checkboxModel = {
+                value1 : true,
+                value2 : 'YES'
+              };
+             }]);
+         </script>
+         <form name="myForm" ng-controller="ExampleController">
+           Value1: <input type="checkbox" ng-model="checkboxModel.value1"> <br/>
+           Value2: <input type="checkbox" ng-model="checkboxModel.value2"
+                          ng-true-value="'YES'" ng-false-value="'NO'"> <br/>
+           <tt>value1 = {{checkboxModel.value1}}</tt><br/>
+           <tt>value2 = {{checkboxModel.value2}}</tt><br/>
+          </form>
+        </file>
+        <file name="protractor.js" type="protractor">
+          it('should change state', function() {
+            var value1 = element(by.binding('checkboxModel.value1'));
+            var value2 = element(by.binding('checkboxModel.value2'));
+
+            expect(value1.getText()).toContain('true');
+            expect(value2.getText()).toContain('YES');
+
+            element(by.model('checkboxModel.value1')).click();
+            element(by.model('checkboxModel.value2')).click();
+
+            expect(value1.getText()).toContain('false');
+            expect(value2.getText()).toContain('NO');
+          });
+        </file>
+      </example>
+   */
+  'checkbox': checkboxInputType,
+
+  'hidden': noop,
+  'button': noop,
+  'submit': noop,
+  'reset': noop,
+  'file': noop
+};
+
+function stringBasedInputType(ctrl) {
+  ctrl.$formatters.push(function(value) {
+    return ctrl.$isEmpty(value) ? value : value.toString();
+  });
+}
+
+function textInputType(scope, element, attr, ctrl, $sniffer, $browser) {
+  baseInputType(scope, element, attr, ctrl, $sniffer, $browser);
+  stringBasedInputType(ctrl);
+}
+
+function baseInputType(scope, element, attr, ctrl, $sniffer, $browser) {
+  var type = lowercase(element[0].type);
+
+  // In composition mode, users are still inputing intermediate text buffer,
+  // hold the listener until composition is done.
+  // More about composition events: https://developer.mozilla.org/en-US/docs/Web/API/CompositionEvent
+  if (!$sniffer.android) {
+    var composing = false;
+
+    element.on('compositionstart', function(data) {
+      composing = true;
+    });
+
+    element.on('compositionend', function() {
+      composing = false;
+      listener();
+    });
+  }
+
+  var listener = function(ev) {
+    if (timeout) {
+      $browser.defer.cancel(timeout);
+      timeout = null;
+    }
+    if (composing) return;
+    var value = element.val(),
+        event = ev && ev.type;
+
+    // By default we will trim the value
+    // If the attribute ng-trim exists we will avoid trimming
+    // If input type is 'password', the value is never trimmed
+    if (type !== 'password' && (!attr.ngTrim || attr.ngTrim !== 'false')) {
+      value = trim(value);
+    }
+
+    // If a control is suffering from bad input (due to native validators), browsers discard its
+    // value, so it may be necessary to revalidate (by calling $setViewValue again) even if the
+    // control's value is the same empty value twice in a row.
+    if (ctrl.$viewValue !== value || (value === '' && ctrl.$$hasNativeValidators)) {
+      ctrl.$setViewValue(value, event);
+    }
+  };
+
+  // if the browser does support "input" event, we are fine - except on IE9 which doesn't fire the
+  // input event on backspace, delete or cut
+  if ($sniffer.hasEvent('input')) {
+    element.on('input', listener);
+  } else {
+    var timeout;
+
+    var deferListener = function(ev, input, origValue) {
+      if (!timeout) {
+        timeout = $browser.defer(function() {
+          timeout = null;
+          if (!input || input.value !== origValue) {
+            listener(ev);
+          }
+        });
+      }
+    };
+
+    element.on('keydown', function(event) {
+      var key = event.keyCode;
+
+      // ignore
+      //    command            modifiers                   arrows
+      if (key === 91 || (15 < key && key < 19) || (37 <= key && key <= 40)) return;
+
+      deferListener(event, this, this.value);
+    });
+
+    // if user modifies input value using context menu in IE, we need "paste" and "cut" events to catch it
+    if ($sniffer.hasEvent('paste')) {
+      element.on('paste cut', deferListener);
+    }
+  }
+
+  // if user paste into input using mouse on older browser
+  // or form autocomplete on newer browser, we need "change" event to catch it
+  element.on('change', listener);
+
+  ctrl.$render = function() {
+    element.val(ctrl.$isEmpty(ctrl.$viewValue) ? '' : ctrl.$viewValue);
+  };
+}
+
+function weekParser(isoWeek, existingDate) {
+  if (isDate(isoWeek)) {
+    return isoWeek;
+  }
+
+  if (isString(isoWeek)) {
+    WEEK_REGEXP.lastIndex = 0;
+    var parts = WEEK_REGEXP.exec(isoWeek);
+    if (parts) {
+      var year = +parts[1],
+          week = +parts[2],
+          hours = 0,
+          minutes = 0,
+          seconds = 0,
+          milliseconds = 0,
+          firstThurs = getFirstThursdayOfYear(year),
+          addDays = (week - 1) * 7;
+
+      if (existingDate) {
+        hours = existingDate.getHours();
+        minutes = existingDate.getMinutes();
+        seconds = existingDate.getSeconds();
+        milliseconds = existingDate.getMilliseconds();
+      }
+
+      return new Date(year, 0, firstThurs.getDate() + addDays, hours, minutes, seconds, milliseconds);
+    }
+  }
+
+  return NaN;
+}
+
+function createDateParser(regexp, mapping) {
+  return function(iso, date) {
+    var parts, map;
+
+    if (isDate(iso)) {
+      return iso;
+    }
+
+    if (isString(iso)) {
+      // When a date is JSON'ified to wraps itself inside of an extra
+      // set of double quotes. This makes the date parsing code unable
+      // to match the date string and parse it as a date.
+      if (iso.charAt(0) == '"' && iso.charAt(iso.length - 1) == '"') {
+        iso = iso.substring(1, iso.length - 1);
+      }
+      if (ISO_DATE_REGEXP.test(iso)) {
+        return new Date(iso);
+      }
+      regexp.lastIndex = 0;
+      parts = regexp.exec(iso);
+
+      if (parts) {
+        parts.shift();
+        if (date) {
+          map = {
+            yyyy: date.getFullYear(),
+            MM: date.getMonth() + 1,
+            dd: date.getDate(),
+            HH: date.getHours(),
+            mm: date.getMinutes(),
+            ss: date.getSeconds(),
+            sss: date.getMilliseconds() / 1000
+          };
+        } else {
+          map = { yyyy: 1970, MM: 1, dd: 1, HH: 0, mm: 0, ss: 0, sss: 0 };
+        }
+
+        forEach(parts, function(part, index) {
+          if (index < mapping.length) {
+            map[mapping[index]] = +part;
+          }
+        });
+        return new Date(map.yyyy, map.MM - 1, map.dd, map.HH, map.mm, map.ss || 0, map.sss * 1000 || 0);
+      }
+    }
+
+    return NaN;
+  };
+}
+
+function createDateInputType(type, regexp, parseDate, format) {
+  return function dynamicDateInputType(scope, element, attr, ctrl, $sniffer, $browser, $filter) {
+    badInputChecker(scope, element, attr, ctrl);
+    baseInputType(scope, element, attr, ctrl, $sniffer, $browser);
+    var timezone = ctrl && ctrl.$options && ctrl.$options.timezone;
+    var previousDate;
+
+    ctrl.$$parserName = type;
+    ctrl.$parsers.push(function(value) {
+      if (ctrl.$isEmpty(value)) return null;
+      if (regexp.test(value)) {
+        // Note: We cannot read ctrl.$modelValue, as there might be a different
+        // parser/formatter in the processing chain so that the model
+        // contains some different data format!
+        var parsedDate = parseDate(value, previousDate);
+        if (timezone === 'UTC') {
+          parsedDate.setMinutes(parsedDate.getMinutes() - parsedDate.getTimezoneOffset());
+        }
+        return parsedDate;
+      }
+      return undefined;
+    });
+
+    ctrl.$formatters.push(function(value) {
+      if (value && !isDate(value)) {
+        throw ngModelMinErr('datefmt', 'Expected `{0}` to be a date', value);
+      }
+      if (isValidDate(value)) {
+        previousDate = value;
+        if (previousDate && timezone === 'UTC') {
+          var timezoneOffset = 60000 * previousDate.getTimezoneOffset();
+          previousDate = new Date(previousDate.getTime() + timezoneOffset);
+        }
+        return $filter('date')(value, format, timezone);
+      } else {
+        previousDate = null;
+        return '';
+      }
+    });
+
+    if (isDefined(attr.min) || attr.ngMin) {
+      var minVal;
+      ctrl.$validators.min = function(value) {
+        return !isValidDate(value) || isUndefined(minVal) || parseDate(value) >= minVal;
+      };
+      attr.$observe('min', function(val) {
+        minVal = parseObservedDateValue(val);
+        ctrl.$validate();
+      });
+    }
+
+    if (isDefined(attr.max) || attr.ngMax) {
+      var maxVal;
+      ctrl.$validators.max = function(value) {
+        return !isValidDate(value) || isUndefined(maxVal) || parseDate(value) <= maxVal;
+      };
+      attr.$observe('max', function(val) {
+        maxVal = parseObservedDateValue(val);
+        ctrl.$validate();
+      });
+    }
+
+    function isValidDate(value) {
+      // Invalid Date: getTime() returns NaN
+      return value && !(value.getTime && value.getTime() !== value.getTime());
+    }
+
+    function parseObservedDateValue(val) {
+      return isDefined(val) ? (isDate(val) ? val : parseDate(val)) : undefined;
+    }
+  };
+}
+
+function badInputChecker(scope, element, attr, ctrl) {
+  var node = element[0];
+  var nativeValidation = ctrl.$$hasNativeValidators = isObject(node.validity);
+  if (nativeValidation) {
+    ctrl.$parsers.push(function(value) {
+      var validity = element.prop(VALIDITY_STATE_PROPERTY) || {};
+      // Detect bug in FF35 for input[email] (https://bugzilla.mozilla.org/show_bug.cgi?id=1064430):
+      // - also sets validity.badInput (should only be validity.typeMismatch).
+      // - see http://www.whatwg.org/specs/web-apps/current-work/multipage/forms.html#e-mail-state-(type=email)
+      // - can ignore this case as we can still read out the erroneous email...
+      return validity.badInput && !validity.typeMismatch ? undefined : value;
+    });
+  }
+}
+
+function numberInputType(scope, element, attr, ctrl, $sniffer, $browser) {
+  badInputChecker(scope, element, attr, ctrl);
+  baseInputType(scope, element, attr, ctrl, $sniffer, $browser);
+
+  ctrl.$$parserName = 'number';
+  ctrl.$parsers.push(function(value) {
+    if (ctrl.$isEmpty(value))      return null;
+    if (NUMBER_REGEXP.test(value)) return parseFloat(value);
+    return undefined;
+  });
+
+  ctrl.$formatters.push(function(value) {
+    if (!ctrl.$isEmpty(value)) {
+      if (!isNumber(value)) {
+        throw ngModelMinErr('numfmt', 'Expected `{0}` to be a number', value);
+      }
+      value = value.toString();
+    }
+    return value;
+  });
+
+  if (isDefined(attr.min) || attr.ngMin) {
+    var minVal;
+    ctrl.$validators.min = function(value) {
+      return ctrl.$isEmpty(value) || isUndefined(minVal) || value >= minVal;
+    };
+
+    attr.$observe('min', function(val) {
+      if (isDefined(val) && !isNumber(val)) {
+        val = parseFloat(val, 10);
+      }
+      minVal = isNumber(val) && !isNaN(val) ? val : undefined;
+      // TODO(matsko): implement validateLater to reduce number of validations
+      ctrl.$validate();
+    });
+  }
+
+  if (isDefined(attr.max) || attr.ngMax) {
+    var maxVal;
+    ctrl.$validators.max = function(value) {
+      return ctrl.$isEmpty(value) || isUndefined(maxVal) || value <= maxVal;
+    };
+
+    attr.$observe('max', function(val) {
+      if (isDefined(val) && !isNumber(val)) {
+        val = parseFloat(val, 10);
+      }
+      maxVal = isNumber(val) && !isNaN(val) ? val : undefined;
+      // TODO(matsko): implement validateLater to reduce number of validations
+      ctrl.$validate();
+    });
+  }
+}
+
+function urlInputType(scope, element, attr, ctrl, $sniffer, $browser) {
+  // Note: no badInputChecker here by purpose as `url` is only a validation
+  // in browsers, i.e. we can always read out input.value even if it is not valid!
+  baseInputType(scope, element, attr, ctrl, $sniffer, $browser);
+  stringBasedInputType(ctrl);
+
+  ctrl.$$parserName = 'url';
+  ctrl.$validators.url = function(modelValue, viewValue) {
+    var value = modelValue || viewValue;
+    return ctrl.$isEmpty(value) || URL_REGEXP.test(value);
+  };
+}
+
+function emailInputType(scope, element, attr, ctrl, $sniffer, $browser) {
+  // Note: no badInputChecker here by purpose as `url` is only a validation
+  // in browsers, i.e. we can always read out input.value even if it is not valid!
+  baseInputType(scope, element, attr, ctrl, $sniffer, $browser);
+  stringBasedInputType(ctrl);
+
+  ctrl.$$parserName = 'email';
+  ctrl.$validators.email = function(modelValue, viewValue) {
+    var value = modelValue || viewValue;
+    return ctrl.$isEmpty(value) || EMAIL_REGEXP.test(value);
+  };
+}
+
+function radioInputType(scope, element, attr, ctrl) {
+  // make the name unique, if not defined
+  if (isUndefined(attr.name)) {
+    element.attr('name', nextUid());
+  }
+
+  var listener = function(ev) {
+    if (element[0].checked) {
+      ctrl.$setViewValue(attr.value, ev && ev.type);
+    }
+  };
+
+  element.on('click', listener);
+
+  ctrl.$render = function() {
+    var value = attr.value;
+    element[0].checked = (value == ctrl.$viewValue);
+  };
+
+  attr.$observe('value', ctrl.$render);
+}
+
+function parseConstantExpr($parse, context, name, expression, fallback) {
+  var parseFn;
+  if (isDefined(expression)) {
+    parseFn = $parse(expression);
+    if (!parseFn.constant) {
+      throw ngModelMinErr('constexpr', 'Expected constant expression for `{0}`, but saw ' +
+                                   '`{1}`.', name, expression);
+    }
+    return parseFn(context);
+  }
+  return fallback;
+}
+
+function checkboxInputType(scope, element, attr, ctrl, $sniffer, $browser, $filter, $parse) {
+  var trueValue = parseConstantExpr($parse, scope, 'ngTrueValue', attr.ngTrueValue, true);
+  var falseValue = parseConstantExpr($parse, scope, 'ngFalseValue', attr.ngFalseValue, false);
+
+  var listener = function(ev) {
+    ctrl.$setViewValue(element[0].checked, ev && ev.type);
+  };
+
+  element.on('click', listener);
+
+  ctrl.$render = function() {
+    element[0].checked = ctrl.$viewValue;
+  };
+
+  // Override the standard `$isEmpty` because the $viewValue of an empty checkbox is always set to `false`
+  // This is because of the parser below, which compares the `$modelValue` with `trueValue` to convert
+  // it to a boolean.
+  ctrl.$isEmpty = function(value) {
+    return value === false;
+  };
+
+  ctrl.$formatters.push(function(value) {
+    return equals(value, trueValue);
+  });
+
+  ctrl.$parsers.push(function(value) {
+    return value ? trueValue : falseValue;
+  });
+}
+
+
+/**
+ * @ngdoc directive
+ * @name textarea
+ * @restrict E
+ *
+ * @description
+ * HTML textarea element control with angular data-binding. The data-binding and validation
+ * properties of this element are exactly the same as those of the
+ * {@link ng.directive:input input element}.
+ *
+ * @param {string} ngModel Assignable angular expression to data-bind to.
+ * @param {string=} name Property name of the form under which the control is published.
+ * @param {string=} required Sets `required` validation error key if the value is not entered.
+ * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+ *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+ *    `required` when you want to data-bind to the `required` attribute.
+ * @param {number=} ngMinlength Sets `minlength` validation error key if the value is shorter than
+ *    minlength.
+ * @param {number=} ngMaxlength Sets `maxlength` validation error key if the value is longer than
+ *    maxlength. Setting the attribute to a negative or non-numeric value, allows view values of any
+ *    length.
+ * @param {string=} ngPattern Sets `pattern` validation error key if the value does not match the
+ *    RegExp pattern expression. Expected value is `/regexp/` for inline patterns or `regexp` for
+ *    patterns defined as scope expressions.
+ * @param {string=} ngChange Angular expression to be executed when input changes due to user
+ *    interaction with the input element.
+ * @param {boolean=} [ngTrim=true] If set to false Angular will not automatically trim the input.
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name input
+ * @restrict E
+ *
+ * @description
+ * HTML input element control. When used together with {@link ngModel `ngModel`}, it provides data-binding,
+ * input state control, and validation.
+ * Input control follows HTML5 input types and polyfills the HTML5 validation behavior for older browsers.
+ *
+ * <div class="alert alert-warning">
+ * **Note:** Not every feature offered is available for all input types.
+ * Specifically, data binding and event handling via `ng-model` is unsupported for `input[file]`.
+ * </div>
+ *
+ * @param {string} ngModel Assignable angular expression to data-bind to.
+ * @param {string=} name Property name of the form under which the control is published.
+ * @param {string=} required Sets `required` validation error key if the value is not entered.
+ * @param {boolean=} ngRequired Sets `required` attribute if set to true
+ * @param {number=} ngMinlength Sets `minlength` validation error key if the value is shorter than
+ *    minlength.
+ * @param {number=} ngMaxlength Sets `maxlength` validation error key if the value is longer than
+ *    maxlength. Setting the attribute to a negative or non-numeric value, allows view values of any
+ *    length.
+ * @param {string=} ngPattern Sets `pattern` validation error key if the value does not match the
+ *    RegExp pattern expression. Expected value is `/regexp/` for inline patterns or `regexp` for
+ *    patterns defined as scope expressions.
+ * @param {string=} ngChange Angular expression to be executed when input changes due to user
+ *    interaction with the input element.
+ * @param {boolean=} [ngTrim=true] If set to false Angular will not automatically trim the input.
+ *    This parameter is ignored for input[type=password] controls, which will never trim the
+ *    input.
+ *
+ * @example
+    <example name="input-directive" module="inputExample">
+      <file name="index.html">
+       <script>
+          angular.module('inputExample', [])
+            .controller('ExampleController', ['$scope', function($scope) {
+              $scope.user = {name: 'guest', last: 'visitor'};
+            }]);
+       </script>
+       <div ng-controller="ExampleController">
+         <form name="myForm">
+           User name: <input type="text" name="userName" ng-model="user.name" required>
+           <span class="error" ng-show="myForm.userName.$error.required">
+             Required!</span><br>
+           Last name: <input type="text" name="lastName" ng-model="user.last"
+             ng-minlength="3" ng-maxlength="10">
+           <span class="error" ng-show="myForm.lastName.$error.minlength">
+             Too short!</span>
+           <span class="error" ng-show="myForm.lastName.$error.maxlength">
+             Too long!</span><br>
+         </form>
+         <hr>
+         <tt>user = {{user}}</tt><br/>
+         <tt>myForm.userName.$valid = {{myForm.userName.$valid}}</tt><br>
+         <tt>myForm.userName.$error = {{myForm.userName.$error}}</tt><br>
+         <tt>myForm.lastName.$valid = {{myForm.lastName.$valid}}</tt><br>
+         <tt>myForm.lastName.$error = {{myForm.lastName.$error}}</tt><br>
+         <tt>myForm.$valid = {{myForm.$valid}}</tt><br>
+         <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br>
+         <tt>myForm.$error.minlength = {{!!myForm.$error.minlength}}</tt><br>
+         <tt>myForm.$error.maxlength = {{!!myForm.$error.maxlength}}</tt><br>
+       </div>
+      </file>
+      <file name="protractor.js" type="protractor">
+        var user = element(by.exactBinding('user'));
+        var userNameValid = element(by.binding('myForm.userName.$valid'));
+        var lastNameValid = element(by.binding('myForm.lastName.$valid'));
+        var lastNameError = element(by.binding('myForm.lastName.$error'));
+        var formValid = element(by.binding('myForm.$valid'));
+        var userNameInput = element(by.model('user.name'));
+        var userLastInput = element(by.model('user.last'));
+
+        it('should initialize to model', function() {
+          expect(user.getText()).toContain('{"name":"guest","last":"visitor"}');
+          expect(userNameValid.getText()).toContain('true');
+          expect(formValid.getText()).toContain('true');
+        });
+
+        it('should be invalid if empty when required', function() {
+          userNameInput.clear();
+          userNameInput.sendKeys('');
+
+          expect(user.getText()).toContain('{"last":"visitor"}');
+          expect(userNameValid.getText()).toContain('false');
+          expect(formValid.getText()).toContain('false');
+        });
+
+        it('should be valid if empty when min length is set', function() {
+          userLastInput.clear();
+          userLastInput.sendKeys('');
+
+          expect(user.getText()).toContain('{"name":"guest","last":""}');
+          expect(lastNameValid.getText()).toContain('true');
+          expect(formValid.getText()).toContain('true');
+        });
+
+        it('should be invalid if less than required min length', function() {
+          userLastInput.clear();
+          userLastInput.sendKeys('xx');
+
+          expect(user.getText()).toContain('{"name":"guest"}');
+          expect(lastNameValid.getText()).toContain('false');
+          expect(lastNameError.getText()).toContain('minlength');
+          expect(formValid.getText()).toContain('false');
+        });
+
+        it('should be invalid if longer than max length', function() {
+          userLastInput.clear();
+          userLastInput.sendKeys('some ridiculously long name');
+
+          expect(user.getText()).toContain('{"name":"guest"}');
+          expect(lastNameValid.getText()).toContain('false');
+          expect(lastNameError.getText()).toContain('maxlength');
+          expect(formValid.getText()).toContain('false');
+        });
+      </file>
+    </example>
+ */
+var inputDirective = ['$browser', '$sniffer', '$filter', '$parse',
+    function($browser, $sniffer, $filter, $parse) {
+  return {
+    restrict: 'E',
+    require: ['?ngModel'],
+    link: {
+      pre: function(scope, element, attr, ctrls) {
+        if (ctrls[0]) {
+          (inputType[lowercase(attr.type)] || inputType.text)(scope, element, attr, ctrls[0], $sniffer,
+                                                              $browser, $filter, $parse);
+        }
+      }
+    }
+  };
+}];
+
+
+
+var CONSTANT_VALUE_REGEXP = /^(true|false|\d+)$/;
+/**
+ * @ngdoc directive
+ * @name ngValue
+ *
+ * @description
+ * Binds the given expression to the value of `<option>` or {@link input[radio] `input[radio]`},
+ * so that when the element is selected, the {@link ngModel `ngModel`} of that element is set to
+ * the bound value.
+ *
+ * `ngValue` is useful when dynamically generating lists of radio buttons using
+ * {@link ngRepeat `ngRepeat`}, as shown below.
+ *
+ * Likewise, `ngValue` can be used to generate `<option>` elements for
+ * the {@link select `select`} element. In that case however, only strings are supported
+ * for the `value `attribute, so the resulting `ngModel` will always be a string.
+ * Support for `select` models with non-string values is available via `ngOptions`.
+ *
+ * @element input
+ * @param {string=} ngValue angular expression, whose value will be bound to the `value` attribute
+ *   of the `input` element
+ *
+ * @example
+    <example name="ngValue-directive" module="valueExample">
+      <file name="index.html">
+       <script>
+          angular.module('valueExample', [])
+            .controller('ExampleController', ['$scope', function($scope) {
+              $scope.names = ['pizza', 'unicorns', 'robots'];
+              $scope.my = { favorite: 'unicorns' };
+            }]);
+       </script>
+        <form ng-controller="ExampleController">
+          <h2>Which is your favorite?</h2>
+            <label ng-repeat="name in names" for="{{name}}">
+              {{name}}
+              <input type="radio"
+                     ng-model="my.favorite"
+                     ng-value="name"
+                     id="{{name}}"
+                     name="favorite">
+            </label>
+          <div>You chose {{my.favorite}}</div>
+        </form>
+      </file>
+      <file name="protractor.js" type="protractor">
+        var favorite = element(by.binding('my.favorite'));
+
+        it('should initialize to model', function() {
+          expect(favorite.getText()).toContain('unicorns');
+        });
+        it('should bind the values to the inputs', function() {
+          element.all(by.model('my.favorite')).get(0).click();
+          expect(favorite.getText()).toContain('pizza');
+        });
+      </file>
+    </example>
+ */
+var ngValueDirective = function() {
+  return {
+    restrict: 'A',
+    priority: 100,
+    compile: function(tpl, tplAttr) {
+      if (CONSTANT_VALUE_REGEXP.test(tplAttr.ngValue)) {
+        return function ngValueConstantLink(scope, elm, attr) {
+          attr.$set('value', scope.$eval(attr.ngValue));
+        };
+      } else {
+        return function ngValueLink(scope, elm, attr) {
+          scope.$watch(attr.ngValue, function valueWatchAction(value) {
+            attr.$set('value', value);
+          });
+        };
+      }
+    }
+  };
+};
+
+/**
+ * @ngdoc directive
+ * @name ngBind
+ * @restrict AC
+ *
+ * @description
+ * The `ngBind` attribute tells Angular to replace the text content of the specified HTML element
+ * with the value of a given expression, and to update the text content when the value of that
+ * expression changes.
+ *
+ * Typically, you don't use `ngBind` directly, but instead you use the double curly markup like
+ * `{{ expression }}` which is similar but less verbose.
+ *
+ * It is preferable to use `ngBind` instead of `{{ expression }}` if a template is momentarily
+ * displayed by the browser in its raw state before Angular compiles it. Since `ngBind` is an
+ * element attribute, it makes the bindings invisible to the user while the page is loading.
+ *
+ * An alternative solution to this problem would be using the
+ * {@link ng.directive:ngCloak ngCloak} directive.
+ *
+ *
+ * @element ANY
+ * @param {expression} ngBind {@link guide/expression Expression} to evaluate.
+ *
+ * @example
+ * Enter a name in the Live Preview text box; the greeting below the text box changes instantly.
+   <example module="bindExample">
+     <file name="index.html">
+       <script>
+         angular.module('bindExample', [])
+           .controller('ExampleController', ['$scope', function($scope) {
+             $scope.name = 'Whirled';
+           }]);
+       </script>
+       <div ng-controller="ExampleController">
+         Enter name: <input type="text" ng-model="name"><br>
+         Hello <span ng-bind="name"></span>!
+       </div>
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should check ng-bind', function() {
+         var nameInput = element(by.model('name'));
+
+         expect(element(by.binding('name')).getText()).toBe('Whirled');
+         nameInput.clear();
+         nameInput.sendKeys('world');
+         expect(element(by.binding('name')).getText()).toBe('world');
+       });
+     </file>
+   </example>
+ */
+var ngBindDirective = ['$compile', function($compile) {
+  return {
+    restrict: 'AC',
+    compile: function ngBindCompile(templateElement) {
+      $compile.$$addBindingClass(templateElement);
+      return function ngBindLink(scope, element, attr) {
+        $compile.$$addBindingInfo(element, attr.ngBind);
+        element = element[0];
+        scope.$watch(attr.ngBind, function ngBindWatchAction(value) {
+          element.textContent = value === undefined ? '' : value;
+        });
+      };
+    }
+  };
+}];
+
+
+/**
+ * @ngdoc directive
+ * @name ngBindTemplate
+ *
+ * @description
+ * The `ngBindTemplate` directive specifies that the element
+ * text content should be replaced with the interpolation of the template
+ * in the `ngBindTemplate` attribute.
+ * Unlike `ngBind`, the `ngBindTemplate` can contain multiple `{{` `}}`
+ * expressions. This directive is needed since some HTML elements
+ * (such as TITLE and OPTION) cannot contain SPAN elements.
+ *
+ * @element ANY
+ * @param {string} ngBindTemplate template of form
+ *   <tt>{{</tt> <tt>expression</tt> <tt>}}</tt> to eval.
+ *
+ * @example
+ * Try it here: enter text in text box and watch the greeting change.
+   <example module="bindExample">
+     <file name="index.html">
+       <script>
+         angular.module('bindExample', [])
+           .controller('ExampleController', ['$scope', function($scope) {
+             $scope.salutation = 'Hello';
+             $scope.name = 'World';
+           }]);
+       </script>
+       <div ng-controller="ExampleController">
+        Salutation: <input type="text" ng-model="salutation"><br>
+        Name: <input type="text" ng-model="name"><br>
+        <pre ng-bind-template="{{salutation}} {{name}}!"></pre>
+       </div>
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should check ng-bind', function() {
+         var salutationElem = element(by.binding('salutation'));
+         var salutationInput = element(by.model('salutation'));
+         var nameInput = element(by.model('name'));
+
+         expect(salutationElem.getText()).toBe('Hello World!');
+
+         salutationInput.clear();
+         salutationInput.sendKeys('Greetings');
+         nameInput.clear();
+         nameInput.sendKeys('user');
+
+         expect(salutationElem.getText()).toBe('Greetings user!');
+       });
+     </file>
+   </example>
+ */
+var ngBindTemplateDirective = ['$interpolate', '$compile', function($interpolate, $compile) {
+  return {
+    compile: function ngBindTemplateCompile(templateElement) {
+      $compile.$$addBindingClass(templateElement);
+      return function ngBindTemplateLink(scope, element, attr) {
+        var interpolateFn = $interpolate(element.attr(attr.$attr.ngBindTemplate));
+        $compile.$$addBindingInfo(element, interpolateFn.expressions);
+        element = element[0];
+        attr.$observe('ngBindTemplate', function(value) {
+          element.textContent = value === undefined ? '' : value;
+        });
+      };
+    }
+  };
+}];
+
+
+/**
+ * @ngdoc directive
+ * @name ngBindHtml
+ *
+ * @description
+ * Evaluates the expression and inserts the resulting HTML into the element in a secure way. By default,
+ * the resulting HTML content will be sanitized using the {@link ngSanitize.$sanitize $sanitize} service.
+ * To utilize this functionality, ensure that `$sanitize` is available, for example, by including {@link
+ * ngSanitize} in your module's dependencies (not in core Angular). In order to use {@link ngSanitize}
+ * in your module's dependencies, you need to include "angular-sanitize.js" in your application.
+ *
+ * You may also bypass sanitization for values you know are safe. To do so, bind to
+ * an explicitly trusted value via {@link ng.$sce#trustAsHtml $sce.trustAsHtml}.  See the example
+ * under {@link ng.$sce#show-me-an-example-using-sce- Strict Contextual Escaping (SCE)}.
+ *
+ * Note: If a `$sanitize` service is unavailable and the bound value isn't explicitly trusted, you
+ * will have an exception (instead of an exploit.)
+ *
+ * @element ANY
+ * @param {expression} ngBindHtml {@link guide/expression Expression} to evaluate.
+ *
+ * @example
+
+   <example module="bindHtmlExample" deps="angular-sanitize.js">
+     <file name="index.html">
+       <div ng-controller="ExampleController">
+        <p ng-bind-html="myHTML"></p>
+       </div>
+     </file>
+
+     <file name="script.js">
+       angular.module('bindHtmlExample', ['ngSanitize'])
+         .controller('ExampleController', ['$scope', function($scope) {
+           $scope.myHTML =
+              'I am an <code>HTML</code>string with ' +
+              '<a href="#">links!</a> and other <em>stuff</em>';
+         }]);
+     </file>
+
+     <file name="protractor.js" type="protractor">
+       it('should check ng-bind-html', function() {
+         expect(element(by.binding('myHTML')).getText()).toBe(
+             'I am an HTMLstring with links! and other stuff');
+       });
+     </file>
+   </example>
+ */
+var ngBindHtmlDirective = ['$sce', '$parse', '$compile', function($sce, $parse, $compile) {
+  return {
+    restrict: 'A',
+    compile: function ngBindHtmlCompile(tElement, tAttrs) {
+      var ngBindHtmlGetter = $parse(tAttrs.ngBindHtml);
+      var ngBindHtmlWatch = $parse(tAttrs.ngBindHtml, function getStringValue(value) {
+        return (value || '').toString();
+      });
+      $compile.$$addBindingClass(tElement);
+
+      return function ngBindHtmlLink(scope, element, attr) {
+        $compile.$$addBindingInfo(element, attr.ngBindHtml);
+
+        scope.$watch(ngBindHtmlWatch, function ngBindHtmlWatchAction() {
+          // we re-evaluate the expr because we want a TrustedValueHolderType
+          // for $sce, not a string
+          element.html($sce.getTrustedHtml(ngBindHtmlGetter(scope)) || '');
+        });
+      };
+    }
+  };
+}];
+
+/**
+ * @ngdoc directive
+ * @name ngChange
+ *
+ * @description
+ * Evaluate the given expression when the user changes the input.
+ * The expression is evaluated immediately, unlike the JavaScript onchange event
+ * which only triggers at the end of a change (usually, when the user leaves the
+ * form element or presses the return key).
+ *
+ * The `ngChange` expression is only evaluated when a change in the input value causes
+ * a new value to be committed to the model.
+ *
+ * It will not be evaluated:
+ * * if the value returned from the `$parsers` transformation pipeline has not changed
+ * * if the input has continued to be invalid since the model will stay `null`
+ * * if the model is changed programmatically and not by a change to the input value
+ *
+ *
+ * Note, this directive requires `ngModel` to be present.
+ *
+ * @element input
+ * @param {expression} ngChange {@link guide/expression Expression} to evaluate upon change
+ * in input value.
+ *
+ * @example
+ * <example name="ngChange-directive" module="changeExample">
+ *   <file name="index.html">
+ *     <script>
+ *       angular.module('changeExample', [])
+ *         .controller('ExampleController', ['$scope', function($scope) {
+ *           $scope.counter = 0;
+ *           $scope.change = function() {
+ *             $scope.counter++;
+ *           };
+ *         }]);
+ *     </script>
+ *     <div ng-controller="ExampleController">
+ *       <input type="checkbox" ng-model="confirmed" ng-change="change()" id="ng-change-example1" />
+ *       <input type="checkbox" ng-model="confirmed" id="ng-change-example2" />
+ *       <label for="ng-change-example2">Confirmed</label><br />
+ *       <tt>debug = {{confirmed}}</tt><br/>
+ *       <tt>counter = {{counter}}</tt><br/>
+ *     </div>
+ *   </file>
+ *   <file name="protractor.js" type="protractor">
+ *     var counter = element(by.binding('counter'));
+ *     var debug = element(by.binding('confirmed'));
+ *
+ *     it('should evaluate the expression if changing from view', function() {
+ *       expect(counter.getText()).toContain('0');
+ *
+ *       element(by.id('ng-change-example1')).click();
+ *
+ *       expect(counter.getText()).toContain('1');
+ *       expect(debug.getText()).toContain('true');
+ *     });
+ *
+ *     it('should not evaluate the expression if changing from model', function() {
+ *       element(by.id('ng-change-example2')).click();
+
+ *       expect(counter.getText()).toContain('0');
+ *       expect(debug.getText()).toContain('true');
+ *     });
+ *   </file>
+ * </example>
+ */
+var ngChangeDirective = valueFn({
+  restrict: 'A',
+  require: 'ngModel',
+  link: function(scope, element, attr, ctrl) {
+    ctrl.$viewChangeListeners.push(function() {
+      scope.$eval(attr.ngChange);
+    });
+  }
+});
+
+function classDirective(name, selector) {
+  name = 'ngClass' + name;
+  return ['$animate', function($animate) {
+    return {
+      restrict: 'AC',
+      link: function(scope, element, attr) {
+        var oldVal;
+
+        scope.$watch(attr[name], ngClassWatchAction, true);
+
+        attr.$observe('class', function(value) {
+          ngClassWatchAction(scope.$eval(attr[name]));
+        });
+
+
+        if (name !== 'ngClass') {
+          scope.$watch('$index', function($index, old$index) {
+            // jshint bitwise: false
+            var mod = $index & 1;
+            if (mod !== (old$index & 1)) {
+              var classes = arrayClasses(scope.$eval(attr[name]));
+              mod === selector ?
+                addClasses(classes) :
+                removeClasses(classes);
+            }
+          });
+        }
+
+        function addClasses(classes) {
+          var newClasses = digestClassCounts(classes, 1);
+          attr.$addClass(newClasses);
+        }
+
+        function removeClasses(classes) {
+          var newClasses = digestClassCounts(classes, -1);
+          attr.$removeClass(newClasses);
+        }
+
+        function digestClassCounts(classes, count) {
+          var classCounts = element.data('$classCounts') || {};
+          var classesToUpdate = [];
+          forEach(classes, function(className) {
+            if (count > 0 || classCounts[className]) {
+              classCounts[className] = (classCounts[className] || 0) + count;
+              if (classCounts[className] === +(count > 0)) {
+                classesToUpdate.push(className);
+              }
+            }
+          });
+          element.data('$classCounts', classCounts);
+          return classesToUpdate.join(' ');
+        }
+
+        function updateClasses(oldClasses, newClasses) {
+          var toAdd = arrayDifference(newClasses, oldClasses);
+          var toRemove = arrayDifference(oldClasses, newClasses);
+          toAdd = digestClassCounts(toAdd, 1);
+          toRemove = digestClassCounts(toRemove, -1);
+          if (toAdd && toAdd.length) {
+            $animate.addClass(element, toAdd);
+          }
+          if (toRemove && toRemove.length) {
+            $animate.removeClass(element, toRemove);
+          }
+        }
+
+        function ngClassWatchAction(newVal) {
+          if (selector === true || scope.$index % 2 === selector) {
+            var newClasses = arrayClasses(newVal || []);
+            if (!oldVal) {
+              addClasses(newClasses);
+            } else if (!equals(newVal,oldVal)) {
+              var oldClasses = arrayClasses(oldVal);
+              updateClasses(oldClasses, newClasses);
+            }
+          }
+          oldVal = shallowCopy(newVal);
+        }
+      }
+    };
+
+    function arrayDifference(tokens1, tokens2) {
+      var values = [];
+
+      outer:
+      for (var i = 0; i < tokens1.length; i++) {
+        var token = tokens1[i];
+        for (var j = 0; j < tokens2.length; j++) {
+          if (token == tokens2[j]) continue outer;
+        }
+        values.push(token);
+      }
+      return values;
+    }
+
+    function arrayClasses(classVal) {
+      if (isArray(classVal)) {
+        return classVal;
+      } else if (isString(classVal)) {
+        return classVal.split(' ');
+      } else if (isObject(classVal)) {
+        var classes = [];
+        forEach(classVal, function(v, k) {
+          if (v) {
+            classes = classes.concat(k.split(' '));
+          }
+        });
+        return classes;
+      }
+      return classVal;
+    }
+  }];
+}
+
+/**
+ * @ngdoc directive
+ * @name ngClass
+ * @restrict AC
+ *
+ * @description
+ * The `ngClass` directive allows you to dynamically set CSS classes on an HTML element by databinding
+ * an expression that represents all classes to be added.
+ *
+ * The directive operates in three different ways, depending on which of three types the expression
+ * evaluates to:
+ *
+ * 1. If the expression evaluates to a string, the string should be one or more space-delimited class
+ * names.
+ *
+ * 2. If the expression evaluates to an array, each element of the array should be a string that is
+ * one or more space-delimited class names.
+ *
+ * 3. If the expression evaluates to an object, then for each key-value pair of the
+ * object with a truthy value the corresponding key is used as a class name.
+ *
+ * The directive won't add duplicate classes if a particular class was already set.
+ *
+ * When the expression changes, the previously added classes are removed and only then the
+ * new classes are added.
+ *
+ * @animations
+ * **add** - happens just before the class is applied to the elements
+ *
+ * **remove** - happens just before the class is removed from the element
+ *
+ * @element ANY
+ * @param {expression} ngClass {@link guide/expression Expression} to eval. The result
+ *   of the evaluation can be a string representing space delimited class
+ *   names, an array, or a map of class names to boolean values. In the case of a map, the
+ *   names of the properties whose values are truthy will be added as css classes to the
+ *   element.
+ *
+ * @example Example that demonstrates basic bindings via ngClass directive.
+   <example>
+     <file name="index.html">
+       <p ng-class="{strike: deleted, bold: important, red: error}">Map Syntax Example</p>
+       <input type="checkbox" ng-model="deleted"> deleted (apply "strike" class)<br>
+       <input type="checkbox" ng-model="important"> important (apply "bold" class)<br>
+       <input type="checkbox" ng-model="error"> error (apply "red" class)
+       <hr>
+       <p ng-class="style">Using String Syntax</p>
+       <input type="text" ng-model="style" placeholder="Type: bold strike red">
+       <hr>
+       <p ng-class="[style1, style2, style3]">Using Array Syntax</p>
+       <input ng-model="style1" placeholder="Type: bold, strike or red"><br>
+       <input ng-model="style2" placeholder="Type: bold, strike or red"><br>
+       <input ng-model="style3" placeholder="Type: bold, strike or red"><br>
+     </file>
+     <file name="style.css">
+       .strike {
+         text-decoration: line-through;
+       }
+       .bold {
+           font-weight: bold;
+       }
+       .red {
+           color: red;
+       }
+     </file>
+     <file name="protractor.js" type="protractor">
+       var ps = element.all(by.css('p'));
+
+       it('should let you toggle the class', function() {
+
+         expect(ps.first().getAttribute('class')).not.toMatch(/bold/);
+         expect(ps.first().getAttribute('class')).not.toMatch(/red/);
+
+         element(by.model('important')).click();
+         expect(ps.first().getAttribute('class')).toMatch(/bold/);
+
+         element(by.model('error')).click();
+         expect(ps.first().getAttribute('class')).toMatch(/red/);
+       });
+
+       it('should let you toggle string example', function() {
+         expect(ps.get(1).getAttribute('class')).toBe('');
+         element(by.model('style')).clear();
+         element(by.model('style')).sendKeys('red');
+         expect(ps.get(1).getAttribute('class')).toBe('red');
+       });
+
+       it('array example should have 3 classes', function() {
+         expect(ps.last().getAttribute('class')).toBe('');
+         element(by.model('style1')).sendKeys('bold');
+         element(by.model('style2')).sendKeys('strike');
+         element(by.model('style3')).sendKeys('red');
+         expect(ps.last().getAttribute('class')).toBe('bold strike red');
+       });
+     </file>
+   </example>
+
+   ## Animations
+
+   The example below demonstrates how to perform animations using ngClass.
+
+   <example module="ngAnimate" deps="angular-animate.js" animations="true">
+     <file name="index.html">
+      <input id="setbtn" type="button" value="set" ng-click="myVar='my-class'">
+      <input id="clearbtn" type="button" value="clear" ng-click="myVar=''">
+      <br>
+      <span class="base-class" ng-class="myVar">Sample Text</span>
+     </file>
+     <file name="style.css">
+       .base-class {
+         -webkit-transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
+         transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
+       }
+
+       .base-class.my-class {
+         color: red;
+         font-size:3em;
+       }
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should check ng-class', function() {
+         expect(element(by.css('.base-class')).getAttribute('class')).not.
+           toMatch(/my-class/);
+
+         element(by.id('setbtn')).click();
+
+         expect(element(by.css('.base-class')).getAttribute('class')).
+           toMatch(/my-class/);
+
+         element(by.id('clearbtn')).click();
+
+         expect(element(by.css('.base-class')).getAttribute('class')).not.
+           toMatch(/my-class/);
+       });
+     </file>
+   </example>
+
+
+   ## ngClass and pre-existing CSS3 Transitions/Animations
+   The ngClass directive still supports CSS3 Transitions/Animations even if they do not follow the ngAnimate CSS naming structure.
+   Upon animation ngAnimate will apply supplementary CSS classes to track the start and end of an animation, but this will not hinder
+   any pre-existing CSS transitions already on the element. To get an idea of what happens during a class-based animation, be sure
+   to view the step by step details of {@link ng.$animate#addClass $animate.addClass} and
+   {@link ng.$animate#removeClass $animate.removeClass}.
+ */
+var ngClassDirective = classDirective('', true);
+
+/**
+ * @ngdoc directive
+ * @name ngClassOdd
+ * @restrict AC
+ *
+ * @description
+ * The `ngClassOdd` and `ngClassEven` directives work exactly as
+ * {@link ng.directive:ngClass ngClass}, except they work in
+ * conjunction with `ngRepeat` and take effect only on odd (even) rows.
+ *
+ * This directive can be applied only within the scope of an
+ * {@link ng.directive:ngRepeat ngRepeat}.
+ *
+ * @element ANY
+ * @param {expression} ngClassOdd {@link guide/expression Expression} to eval. The result
+ *   of the evaluation can be a string representing space delimited class names or an array.
+ *
+ * @example
+   <example>
+     <file name="index.html">
+        <ol ng-init="names=['John', 'Mary', 'Cate', 'Suz']">
+          <li ng-repeat="name in names">
+           <span ng-class-odd="'odd'" ng-class-even="'even'">
+             {{name}}
+           </span>
+          </li>
+        </ol>
+     </file>
+     <file name="style.css">
+       .odd {
+         color: red;
+       }
+       .even {
+         color: blue;
+       }
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should check ng-class-odd and ng-class-even', function() {
+         expect(element(by.repeater('name in names').row(0).column('name')).getAttribute('class')).
+           toMatch(/odd/);
+         expect(element(by.repeater('name in names').row(1).column('name')).getAttribute('class')).
+           toMatch(/even/);
+       });
+     </file>
+   </example>
+ */
+var ngClassOddDirective = classDirective('Odd', 0);
+
+/**
+ * @ngdoc directive
+ * @name ngClassEven
+ * @restrict AC
+ *
+ * @description
+ * The `ngClassOdd` and `ngClassEven` directives work exactly as
+ * {@link ng.directive:ngClass ngClass}, except they work in
+ * conjunction with `ngRepeat` and take effect only on odd (even) rows.
+ *
+ * This directive can be applied only within the scope of an
+ * {@link ng.directive:ngRepeat ngRepeat}.
+ *
+ * @element ANY
+ * @param {expression} ngClassEven {@link guide/expression Expression} to eval. The
+ *   result of the evaluation can be a string representing space delimited class names or an array.
+ *
+ * @example
+   <example>
+     <file name="index.html">
+        <ol ng-init="names=['John', 'Mary', 'Cate', 'Suz']">
+          <li ng-repeat="name in names">
+           <span ng-class-odd="'odd'" ng-class-even="'even'">
+             {{name}} &nbsp; &nbsp; &nbsp;
+           </span>
+          </li>
+        </ol>
+     </file>
+     <file name="style.css">
+       .odd {
+         color: red;
+       }
+       .even {
+         color: blue;
+       }
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should check ng-class-odd and ng-class-even', function() {
+         expect(element(by.repeater('name in names').row(0).column('name')).getAttribute('class')).
+           toMatch(/odd/);
+         expect(element(by.repeater('name in names').row(1).column('name')).getAttribute('class')).
+           toMatch(/even/);
+       });
+     </file>
+   </example>
+ */
+var ngClassEvenDirective = classDirective('Even', 1);
+
+/**
+ * @ngdoc directive
+ * @name ngCloak
+ * @restrict AC
+ *
+ * @description
+ * The `ngCloak` directive is used to prevent the Angular html template from being briefly
+ * displayed by the browser in its raw (uncompiled) form while your application is loading. Use this
+ * directive to avoid the undesirable flicker effect caused by the html template display.
+ *
+ * The directive can be applied to the `<body>` element, but the preferred usage is to apply
+ * multiple `ngCloak` directives to small portions of the page to permit progressive rendering
+ * of the browser view.
+ *
+ * `ngCloak` works in cooperation with the following css rule embedded within `angular.js` and
+ * `angular.min.js`.
+ * For CSP mode please add `angular-csp.css` to your html file (see {@link ng.directive:ngCsp ngCsp}).
+ *
+ * ```css
+ * [ng\:cloak], [ng-cloak], [data-ng-cloak], [x-ng-cloak], .ng-cloak, .x-ng-cloak {
+ *   display: none !important;
+ * }
+ * ```
+ *
+ * When this css rule is loaded by the browser, all html elements (including their children) that
+ * are tagged with the `ngCloak` directive are hidden. When Angular encounters this directive
+ * during the compilation of the template it deletes the `ngCloak` element attribute, making
+ * the compiled element visible.
+ *
+ * For the best result, the `angular.js` script must be loaded in the head section of the html
+ * document; alternatively, the css rule above must be included in the external stylesheet of the
+ * application.
+ *
+ * @element ANY
+ *
+ * @example
+   <example>
+     <file name="index.html">
+        <div id="template1" ng-cloak>{{ 'hello' }}</div>
+        <div id="template2" class="ng-cloak">{{ 'world' }}</div>
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should remove the template directive and css class', function() {
+         expect($('#template1').getAttribute('ng-cloak')).
+           toBeNull();
+         expect($('#template2').getAttribute('ng-cloak')).
+           toBeNull();
+       });
+     </file>
+   </example>
+ *
+ */
+var ngCloakDirective = ngDirective({
+  compile: function(element, attr) {
+    attr.$set('ngCloak', undefined);
+    element.removeClass('ng-cloak');
+  }
+});
+
+/**
+ * @ngdoc directive
+ * @name ngController
+ *
+ * @description
+ * The `ngController` directive attaches a controller class to the view. This is a key aspect of how angular
+ * supports the principles behind the Model-View-Controller design pattern.
+ *
+ * MVC components in angular:
+ *
+ * * Model — Models are the properties of a scope; scopes are attached to the DOM where scope properties
+ *   are accessed through bindings.
+ * * View — The template (HTML with data bindings) that is rendered into the View.
+ * * Controller — The `ngController` directive specifies a Controller class; the class contains business
+ *   logic behind the application to decorate the scope with functions and values
+ *
+ * Note that you can also attach controllers to the DOM by declaring it in a route definition
+ * via the {@link ngRoute.$route $route} service. A common mistake is to declare the controller
+ * again using `ng-controller` in the template itself.  This will cause the controller to be attached
+ * and executed twice.
+ *
+ * @element ANY
+ * @scope
+ * @priority 500
+ * @param {expression} ngController Name of a constructor function registered with the current
+ * {@link ng.$controllerProvider $controllerProvider} or an {@link guide/expression expression}
+ * that on the current scope evaluates to a constructor function.
+ *
+ * The controller instance can be published into a scope property by specifying
+ * `ng-controller="as propertyName"`.
+ *
+ * If the current `$controllerProvider` is configured to use globals (via
+ * {@link ng.$controllerProvider#allowGlobals `$controllerProvider.allowGlobals()` }), this may
+ * also be the name of a globally accessible constructor function (not recommended).
+ *
+ * @example
+ * Here is a simple form for editing user contact information. Adding, removing, clearing, and
+ * greeting are methods declared on the controller (see source tab). These methods can
+ * easily be called from the angular markup. Any changes to the data are automatically reflected
+ * in the View without the need for a manual update.
+ *
+ * Two different declaration styles are included below:
+ *
+ * * one binds methods and properties directly onto the controller using `this`:
+ * `ng-controller="SettingsController1 as settings"`
+ * * one injects `$scope` into the controller:
+ * `ng-controller="SettingsController2"`
+ *
+ * The second option is more common in the Angular community, and is generally used in boilerplates
+ * and in this guide. However, there are advantages to binding properties directly to the controller
+ * and avoiding scope.
+ *
+ * * Using `controller as` makes it obvious which controller you are accessing in the template when
+ * multiple controllers apply to an element.
+ * * If you are writing your controllers as classes you have easier access to the properties and
+ * methods, which will appear on the scope, from inside the controller code.
+ * * Since there is always a `.` in the bindings, you don't have to worry about prototypal
+ * inheritance masking primitives.
+ *
+ * This example demonstrates the `controller as` syntax.
+ *
+ * <example name="ngControllerAs" module="controllerAsExample">
+ *   <file name="index.html">
+ *    <div id="ctrl-as-exmpl" ng-controller="SettingsController1 as settings">
+ *      Name: <input type="text" ng-model="settings.name"/>
+ *      [ <a href="" ng-click="settings.greet()">greet</a> ]<br/>
+ *      Contact:
+ *      <ul>
+ *        <li ng-repeat="contact in settings.contacts">
+ *          <select ng-model="contact.type">
+ *             <option>phone</option>
+ *             <option>email</option>
+ *          </select>
+ *          <input type="text" ng-model="contact.value"/>
+ *          [ <a href="" ng-click="settings.clearContact(contact)">clear</a>
+ *          | <a href="" ng-click="settings.removeContact(contact)">X</a> ]
+ *        </li>
+ *        <li>[ <a href="" ng-click="settings.addContact()">add</a> ]</li>
+ *     </ul>
+ *    </div>
+ *   </file>
+ *   <file name="app.js">
+ *    angular.module('controllerAsExample', [])
+ *      .controller('SettingsController1', SettingsController1);
+ *
+ *    function SettingsController1() {
+ *      this.name = "John Smith";
+ *      this.contacts = [
+ *        {type: 'phone', value: '408 555 1212'},
+ *        {type: 'email', value: 'john.smith@example.org'} ];
+ *    }
+ *
+ *    SettingsController1.prototype.greet = function() {
+ *      alert(this.name);
+ *    };
+ *
+ *    SettingsController1.prototype.addContact = function() {
+ *      this.contacts.push({type: 'email', value: 'yourname@example.org'});
+ *    };
+ *
+ *    SettingsController1.prototype.removeContact = function(contactToRemove) {
+ *     var index = this.contacts.indexOf(contactToRemove);
+ *      this.contacts.splice(index, 1);
+ *    };
+ *
+ *    SettingsController1.prototype.clearContact = function(contact) {
+ *      contact.type = 'phone';
+ *      contact.value = '';
+ *    };
+ *   </file>
+ *   <file name="protractor.js" type="protractor">
+ *     it('should check controller as', function() {
+ *       var container = element(by.id('ctrl-as-exmpl'));
+ *         expect(container.element(by.model('settings.name'))
+ *           .getAttribute('value')).toBe('John Smith');
+ *
+ *       var firstRepeat =
+ *           container.element(by.repeater('contact in settings.contacts').row(0));
+ *       var secondRepeat =
+ *           container.element(by.repeater('contact in settings.contacts').row(1));
+ *
+ *       expect(firstRepeat.element(by.model('contact.value')).getAttribute('value'))
+ *           .toBe('408 555 1212');
+ *
+ *       expect(secondRepeat.element(by.model('contact.value')).getAttribute('value'))
+ *           .toBe('john.smith@example.org');
+ *
+ *       firstRepeat.element(by.linkText('clear')).click();
+ *
+ *       expect(firstRepeat.element(by.model('contact.value')).getAttribute('value'))
+ *           .toBe('');
+ *
+ *       container.element(by.linkText('add')).click();
+ *
+ *       expect(container.element(by.repeater('contact in settings.contacts').row(2))
+ *           .element(by.model('contact.value'))
+ *           .getAttribute('value'))
+ *           .toBe('yourname@example.org');
+ *     });
+ *   </file>
+ * </example>
+ *
+ * This example demonstrates the "attach to `$scope`" style of controller.
+ *
+ * <example name="ngController" module="controllerExample">
+ *  <file name="index.html">
+ *   <div id="ctrl-exmpl" ng-controller="SettingsController2">
+ *     Name: <input type="text" ng-model="name"/>
+ *     [ <a href="" ng-click="greet()">greet</a> ]<br/>
+ *     Contact:
+ *     <ul>
+ *       <li ng-repeat="contact in contacts">
+ *         <select ng-model="contact.type">
+ *            <option>phone</option>
+ *            <option>email</option>
+ *         </select>
+ *         <input type="text" ng-model="contact.value"/>
+ *         [ <a href="" ng-click="clearContact(contact)">clear</a>
+ *         | <a href="" ng-click="removeContact(contact)">X</a> ]
+ *       </li>
+ *       <li>[ <a href="" ng-click="addContact()">add</a> ]</li>
+ *    </ul>
+ *   </div>
+ *  </file>
+ *  <file name="app.js">
+ *   angular.module('controllerExample', [])
+ *     .controller('SettingsController2', ['$scope', SettingsController2]);
+ *
+ *   function SettingsController2($scope) {
+ *     $scope.name = "John Smith";
+ *     $scope.contacts = [
+ *       {type:'phone', value:'408 555 1212'},
+ *       {type:'email', value:'john.smith@example.org'} ];
+ *
+ *     $scope.greet = function() {
+ *       alert($scope.name);
+ *     };
+ *
+ *     $scope.addContact = function() {
+ *       $scope.contacts.push({type:'email', value:'yourname@example.org'});
+ *     };
+ *
+ *     $scope.removeContact = function(contactToRemove) {
+ *       var index = $scope.contacts.indexOf(contactToRemove);
+ *       $scope.contacts.splice(index, 1);
+ *     };
+ *
+ *     $scope.clearContact = function(contact) {
+ *       contact.type = 'phone';
+ *       contact.value = '';
+ *     };
+ *   }
+ *  </file>
+ *  <file name="protractor.js" type="protractor">
+ *    it('should check controller', function() {
+ *      var container = element(by.id('ctrl-exmpl'));
+ *
+ *      expect(container.element(by.model('name'))
+ *          .getAttribute('value')).toBe('John Smith');
+ *
+ *      var firstRepeat =
+ *          container.element(by.repeater('contact in contacts').row(0));
+ *      var secondRepeat =
+ *          container.element(by.repeater('contact in contacts').row(1));
+ *
+ *      expect(firstRepeat.element(by.model('contact.value')).getAttribute('value'))
+ *          .toBe('408 555 1212');
+ *      expect(secondRepeat.element(by.model('contact.value')).getAttribute('value'))
+ *          .toBe('john.smith@example.org');
+ *
+ *      firstRepeat.element(by.linkText('clear')).click();
+ *
+ *      expect(firstRepeat.element(by.model('contact.value')).getAttribute('value'))
+ *          .toBe('');
+ *
+ *      container.element(by.linkText('add')).click();
+ *
+ *      expect(container.element(by.repeater('contact in contacts').row(2))
+ *          .element(by.model('contact.value'))
+ *          .getAttribute('value'))
+ *          .toBe('yourname@example.org');
+ *    });
+ *  </file>
+ *</example>
+
+ */
+var ngControllerDirective = [function() {
+  return {
+    restrict: 'A',
+    scope: true,
+    controller: '@',
+    priority: 500
+  };
+}];
+
+/**
+ * @ngdoc directive
+ * @name ngCsp
+ *
+ * @element html
+ * @description
+ * Enables [CSP (Content Security Policy)](https://developer.mozilla.org/en/Security/CSP) support.
+ *
+ * This is necessary when developing things like Google Chrome Extensions or Universal Windows Apps.
+ *
+ * CSP forbids apps to use `eval` or `Function(string)` generated functions (among other things).
+ * For Angular to be CSP compatible there are only two things that we need to do differently:
+ *
+ * - don't use `Function` constructor to generate optimized value getters
+ * - don't inject custom stylesheet into the document
+ *
+ * AngularJS uses `Function(string)` generated functions as a speed optimization. Applying the `ngCsp`
+ * directive will cause Angular to use CSP compatibility mode. When this mode is on AngularJS will
+ * evaluate all expressions up to 30% slower than in non-CSP mode, but no security violations will
+ * be raised.
+ *
+ * CSP forbids JavaScript to inline stylesheet rules. In non CSP mode Angular automatically
+ * includes some CSS rules (e.g. {@link ng.directive:ngCloak ngCloak}).
+ * To make those directives work in CSP mode, include the `angular-csp.css` manually.
+ *
+ * Angular tries to autodetect if CSP is active and automatically turn on the CSP-safe mode. This
+ * autodetection however triggers a CSP error to be logged in the console:
+ *
+ * ```
+ * Refused to evaluate a string as JavaScript because 'unsafe-eval' is not an allowed source of
+ * script in the following Content Security Policy directive: "default-src 'self'". Note that
+ * 'script-src' was not explicitly set, so 'default-src' is used as a fallback.
+ * ```
+ *
+ * This error is harmless but annoying. To prevent the error from showing up, put the `ngCsp`
+ * directive on the root element of the application or on the `angular.js` script tag, whichever
+ * appears first in the html document.
+ *
+ * *Note: This directive is only available in the `ng-csp` and `data-ng-csp` attribute form.*
+ *
+ * @example
+ * This example shows how to apply the `ngCsp` directive to the `html` tag.
+   ```html
+     <!doctype html>
+     <html ng-app ng-csp>
+     ...
+     ...
+     </html>
+   ```
+  * @example
+      // Note: the suffix `.csp` in the example name triggers
+      // csp mode in our http server!
+      <example name="example.csp" module="cspExample" ng-csp="true">
+        <file name="index.html">
+          <div ng-controller="MainController as ctrl">
+            <div>
+              <button ng-click="ctrl.inc()" id="inc">Increment</button>
+              <span id="counter">
+                {{ctrl.counter}}
+              </span>
+            </div>
+
+            <div>
+              <button ng-click="ctrl.evil()" id="evil">Evil</button>
+              <span id="evilError">
+                {{ctrl.evilError}}
+              </span>
+            </div>
+          </div>
+        </file>
+        <file name="script.js">
+           angular.module('cspExample', [])
+             .controller('MainController', function() {
+                this.counter = 0;
+                this.inc = function() {
+                  this.counter++;
+                };
+                this.evil = function() {
+                  // jshint evil:true
+                  try {
+                    eval('1+2');
+                  } catch (e) {
+                    this.evilError = e.message;
+                  }
+                };
+              });
+        </file>
+        <file name="protractor.js" type="protractor">
+          var util, webdriver;
+
+          var incBtn = element(by.id('inc'));
+          var counter = element(by.id('counter'));
+          var evilBtn = element(by.id('evil'));
+          var evilError = element(by.id('evilError'));
+
+          function getAndClearSevereErrors() {
+            return browser.manage().logs().get('browser').then(function(browserLog) {
+              return browserLog.filter(function(logEntry) {
+                return logEntry.level.value > webdriver.logging.Level.WARNING.value;
+              });
+            });
+          }
+
+          function clearErrors() {
+            getAndClearSevereErrors();
+          }
+
+          function expectNoErrors() {
+            getAndClearSevereErrors().then(function(filteredLog) {
+              expect(filteredLog.length).toEqual(0);
+              if (filteredLog.length) {
+                console.log('browser console errors: ' + util.inspect(filteredLog));
+              }
+            });
+          }
+
+          function expectError(regex) {
+            getAndClearSevereErrors().then(function(filteredLog) {
+              var found = false;
+              filteredLog.forEach(function(log) {
+                if (log.message.match(regex)) {
+                  found = true;
+                }
+              });
+              if (!found) {
+                throw new Error('expected an error that matches ' + regex);
+              }
+            });
+          }
+
+          beforeEach(function() {
+            util = require('util');
+            webdriver = require('protractor/node_modules/selenium-webdriver');
+          });
+
+          // For now, we only test on Chrome,
+          // as Safari does not load the page with Protractor's injected scripts,
+          // and Firefox webdriver always disables content security policy (#6358)
+          if (browser.params.browser !== 'chrome') {
+            return;
+          }
+
+          it('should not report errors when the page is loaded', function() {
+            // clear errors so we are not dependent on previous tests
+            clearErrors();
+            // Need to reload the page as the page is already loaded when
+            // we come here
+            browser.driver.getCurrentUrl().then(function(url) {
+              browser.get(url);
+            });
+            expectNoErrors();
+          });
+
+          it('should evaluate expressions', function() {
+            expect(counter.getText()).toEqual('0');
+            incBtn.click();
+            expect(counter.getText()).toEqual('1');
+            expectNoErrors();
+          });
+
+          it('should throw and report an error when using "eval"', function() {
+            evilBtn.click();
+            expect(evilError.getText()).toMatch(/Content Security Policy/);
+            expectError(/Content Security Policy/);
+          });
+        </file>
+      </example>
+  */
+
+// ngCsp is not implemented as a proper directive any more, because we need it be processed while we
+// bootstrap the system (before $parse is instantiated), for this reason we just have
+// the csp.isActive() fn that looks for ng-csp attribute anywhere in the current doc
+
+/**
+ * @ngdoc directive
+ * @name ngClick
+ *
+ * @description
+ * The ngClick directive allows you to specify custom behavior when
+ * an element is clicked.
+ *
+ * @element ANY
+ * @priority 0
+ * @param {expression} ngClick {@link guide/expression Expression} to evaluate upon
+ * click. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <button ng-click="count = count + 1" ng-init="count=0">
+        Increment
+      </button>
+      <span>
+        count: {{count}}
+      </span>
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should check ng-click', function() {
+         expect(element(by.binding('count')).getText()).toMatch('0');
+         element(by.css('button')).click();
+         expect(element(by.binding('count')).getText()).toMatch('1');
+       });
+     </file>
+   </example>
+ */
+/*
+ * A collection of directives that allows creation of custom event handlers that are defined as
+ * angular expressions and are compiled and executed within the current scope.
+ */
+var ngEventDirectives = {};
+
+// For events that might fire synchronously during DOM manipulation
+// we need to execute their event handlers asynchronously using $evalAsync,
+// so that they are not executed in an inconsistent state.
+var forceAsyncEvents = {
+  'blur': true,
+  'focus': true
+};
+forEach(
+  'click dblclick mousedown mouseup mouseover mouseout mousemove mouseenter mouseleave keydown keyup keypress submit focus blur copy cut paste'.split(' '),
+  function(eventName) {
+    var directiveName = directiveNormalize('ng-' + eventName);
+    ngEventDirectives[directiveName] = ['$parse', '$rootScope', function($parse, $rootScope) {
+      return {
+        restrict: 'A',
+        compile: function($element, attr) {
+          // We expose the powerful $event object on the scope that provides access to the Window,
+          // etc. that isn't protected by the fast paths in $parse.  We explicitly request better
+          // checks at the cost of speed since event handler expressions are not executed as
+          // frequently as regular change detection.
+          var fn = $parse(attr[directiveName], /* interceptorFn */ null, /* expensiveChecks */ true);
+          return function ngEventHandler(scope, element) {
+            element.on(eventName, function(event) {
+              var callback = function() {
+                fn(scope, {$event:event});
+              };
+              if (forceAsyncEvents[eventName] && $rootScope.$$phase) {
+                scope.$evalAsync(callback);
+              } else {
+                scope.$apply(callback);
+              }
+            });
+          };
+        }
+      };
+    }];
+  }
+);
+
+/**
+ * @ngdoc directive
+ * @name ngDblclick
+ *
+ * @description
+ * The `ngDblclick` directive allows you to specify custom behavior on a dblclick event.
+ *
+ * @element ANY
+ * @priority 0
+ * @param {expression} ngDblclick {@link guide/expression Expression} to evaluate upon
+ * a dblclick. (The Event object is available as `$event`)
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <button ng-dblclick="count = count + 1" ng-init="count=0">
+        Increment (on double click)
+      </button>
+      count: {{count}}
+     </file>
+   </example>
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngMousedown
+ *
+ * @description
+ * The ngMousedown directive allows you to specify custom behavior on mousedown event.
+ *
+ * @element ANY
+ * @priority 0
+ * @param {expression} ngMousedown {@link guide/expression Expression} to evaluate upon
+ * mousedown. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <button ng-mousedown="count = count + 1" ng-init="count=0">
+        Increment (on mouse down)
+      </button>
+      count: {{count}}
+     </file>
+   </example>
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngMouseup
+ *
+ * @description
+ * Specify custom behavior on mouseup event.
+ *
+ * @element ANY
+ * @priority 0
+ * @param {expression} ngMouseup {@link guide/expression Expression} to evaluate upon
+ * mouseup. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <button ng-mouseup="count = count + 1" ng-init="count=0">
+        Increment (on mouse up)
+      </button>
+      count: {{count}}
+     </file>
+   </example>
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngMouseover
+ *
+ * @description
+ * Specify custom behavior on mouseover event.
+ *
+ * @element ANY
+ * @priority 0
+ * @param {expression} ngMouseover {@link guide/expression Expression} to evaluate upon
+ * mouseover. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <button ng-mouseover="count = count + 1" ng-init="count=0">
+        Increment (when mouse is over)
+      </button>
+      count: {{count}}
+     </file>
+   </example>
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngMouseenter
+ *
+ * @description
+ * Specify custom behavior on mouseenter event.
+ *
+ * @element ANY
+ * @priority 0
+ * @param {expression} ngMouseenter {@link guide/expression Expression} to evaluate upon
+ * mouseenter. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <button ng-mouseenter="count = count + 1" ng-init="count=0">
+        Increment (when mouse enters)
+      </button>
+      count: {{count}}
+     </file>
+   </example>
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngMouseleave
+ *
+ * @description
+ * Specify custom behavior on mouseleave event.
+ *
+ * @element ANY
+ * @priority 0
+ * @param {expression} ngMouseleave {@link guide/expression Expression} to evaluate upon
+ * mouseleave. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <button ng-mouseleave="count = count + 1" ng-init="count=0">
+        Increment (when mouse leaves)
+      </button>
+      count: {{count}}
+     </file>
+   </example>
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngMousemove
+ *
+ * @description
+ * Specify custom behavior on mousemove event.
+ *
+ * @element ANY
+ * @priority 0
+ * @param {expression} ngMousemove {@link guide/expression Expression} to evaluate upon
+ * mousemove. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <button ng-mousemove="count = count + 1" ng-init="count=0">
+        Increment (when mouse moves)
+      </button>
+      count: {{count}}
+     </file>
+   </example>
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngKeydown
+ *
+ * @description
+ * Specify custom behavior on keydown event.
+ *
+ * @element ANY
+ * @priority 0
+ * @param {expression} ngKeydown {@link guide/expression Expression} to evaluate upon
+ * keydown. (Event object is available as `$event` and can be interrogated for keyCode, altKey, etc.)
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <input ng-keydown="count = count + 1" ng-init="count=0">
+      key down count: {{count}}
+     </file>
+   </example>
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngKeyup
+ *
+ * @description
+ * Specify custom behavior on keyup event.
+ *
+ * @element ANY
+ * @priority 0
+ * @param {expression} ngKeyup {@link guide/expression Expression} to evaluate upon
+ * keyup. (Event object is available as `$event` and can be interrogated for keyCode, altKey, etc.)
+ *
+ * @example
+   <example>
+     <file name="index.html">
+       <p>Typing in the input box below updates the key count</p>
+       <input ng-keyup="count = count + 1" ng-init="count=0"> key up count: {{count}}
+
+       <p>Typing in the input box below updates the keycode</p>
+       <input ng-keyup="event=$event">
+       <p>event keyCode: {{ event.keyCode }}</p>
+       <p>event altKey: {{ event.altKey }}</p>
+     </file>
+   </example>
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngKeypress
+ *
+ * @description
+ * Specify custom behavior on keypress event.
+ *
+ * @element ANY
+ * @param {expression} ngKeypress {@link guide/expression Expression} to evaluate upon
+ * keypress. ({@link guide/expression#-event- Event object is available as `$event`}
+ * and can be interrogated for keyCode, altKey, etc.)
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <input ng-keypress="count = count + 1" ng-init="count=0">
+      key press count: {{count}}
+     </file>
+   </example>
+ */
+
+
+/**
+ * @ngdoc directive
+ * @name ngSubmit
+ *
+ * @description
+ * Enables binding angular expressions to onsubmit events.
+ *
+ * Additionally it prevents the default action (which for form means sending the request to the
+ * server and reloading the current page), but only if the form does not contain `action`,
+ * `data-action`, or `x-action` attributes.
+ *
+ * <div class="alert alert-warning">
+ * **Warning:** Be careful not to cause "double-submission" by using both the `ngClick` and
+ * `ngSubmit` handlers together. See the
+ * {@link form#submitting-a-form-and-preventing-the-default-action `form` directive documentation}
+ * for a detailed discussion of when `ngSubmit` may be triggered.
+ * </div>
+ *
+ * @element form
+ * @priority 0
+ * @param {expression} ngSubmit {@link guide/expression Expression} to eval.
+ * ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example module="submitExample">
+     <file name="index.html">
+      <script>
+        angular.module('submitExample', [])
+          .controller('ExampleController', ['$scope', function($scope) {
+            $scope.list = [];
+            $scope.text = 'hello';
+            $scope.submit = function() {
+              if ($scope.text) {
+                $scope.list.push(this.text);
+                $scope.text = '';
+              }
+            };
+          }]);
+      </script>
+      <form ng-submit="submit()" ng-controller="ExampleController">
+        Enter text and hit enter:
+        <input type="text" ng-model="text" name="text" />
+        <input type="submit" id="submit" value="Submit" />
+        <pre>list={{list}}</pre>
+      </form>
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should check ng-submit', function() {
+         expect(element(by.binding('list')).getText()).toBe('list=[]');
+         element(by.css('#submit')).click();
+         expect(element(by.binding('list')).getText()).toContain('hello');
+         expect(element(by.model('text')).getAttribute('value')).toBe('');
+       });
+       it('should ignore empty strings', function() {
+         expect(element(by.binding('list')).getText()).toBe('list=[]');
+         element(by.css('#submit')).click();
+         element(by.css('#submit')).click();
+         expect(element(by.binding('list')).getText()).toContain('hello');
+        });
+     </file>
+   </example>
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngFocus
+ *
+ * @description
+ * Specify custom behavior on focus event.
+ *
+ * Note: As the `focus` event is executed synchronously when calling `input.focus()`
+ * AngularJS executes the expression using `scope.$evalAsync` if the event is fired
+ * during an `$apply` to ensure a consistent state.
+ *
+ * @element window, input, select, textarea, a
+ * @priority 0
+ * @param {expression} ngFocus {@link guide/expression Expression} to evaluate upon
+ * focus. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+ * See {@link ng.directive:ngClick ngClick}
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngBlur
+ *
+ * @description
+ * Specify custom behavior on blur event.
+ *
+ * A [blur event](https://developer.mozilla.org/en-US/docs/Web/Events/blur) fires when
+ * an element has lost focus.
+ *
+ * Note: As the `blur` event is executed synchronously also during DOM manipulations
+ * (e.g. removing a focussed input),
+ * AngularJS executes the expression using `scope.$evalAsync` if the event is fired
+ * during an `$apply` to ensure a consistent state.
+ *
+ * @element window, input, select, textarea, a
+ * @priority 0
+ * @param {expression} ngBlur {@link guide/expression Expression} to evaluate upon
+ * blur. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+ * See {@link ng.directive:ngClick ngClick}
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngCopy
+ *
+ * @description
+ * Specify custom behavior on copy event.
+ *
+ * @element window, input, select, textarea, a
+ * @priority 0
+ * @param {expression} ngCopy {@link guide/expression Expression} to evaluate upon
+ * copy. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <input ng-copy="copied=true" ng-init="copied=false; value='copy me'" ng-model="value">
+      copied: {{copied}}
+     </file>
+   </example>
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngCut
+ *
+ * @description
+ * Specify custom behavior on cut event.
+ *
+ * @element window, input, select, textarea, a
+ * @priority 0
+ * @param {expression} ngCut {@link guide/expression Expression} to evaluate upon
+ * cut. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <input ng-cut="cut=true" ng-init="cut=false; value='cut me'" ng-model="value">
+      cut: {{cut}}
+     </file>
+   </example>
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngPaste
+ *
+ * @description
+ * Specify custom behavior on paste event.
+ *
+ * @element window, input, select, textarea, a
+ * @priority 0
+ * @param {expression} ngPaste {@link guide/expression Expression} to evaluate upon
+ * paste. ({@link guide/expression#-event- Event object is available as `$event`})
+ *
+ * @example
+   <example>
+     <file name="index.html">
+      <input ng-paste="paste=true" ng-init="paste=false" placeholder='paste here'>
+      pasted: {{paste}}
+     </file>
+   </example>
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngIf
+ * @restrict A
+ *
+ * @description
+ * The `ngIf` directive removes or recreates a portion of the DOM tree based on an
+ * {expression}. If the expression assigned to `ngIf` evaluates to a false
+ * value then the element is removed from the DOM, otherwise a clone of the
+ * element is reinserted into the DOM.
+ *
+ * `ngIf` differs from `ngShow` and `ngHide` in that `ngIf` completely removes and recreates the
+ * element in the DOM rather than changing its visibility via the `display` css property.  A common
+ * case when this difference is significant is when using css selectors that rely on an element's
+ * position within the DOM, such as the `:first-child` or `:last-child` pseudo-classes.
+ *
+ * Note that when an element is removed using `ngIf` its scope is destroyed and a new scope
+ * is created when the element is restored.  The scope created within `ngIf` inherits from
+ * its parent scope using
+ * [prototypal inheritance](https://github.com/angular/angular.js/wiki/Understanding-Scopes#javascript-prototypal-inheritance).
+ * An important implication of this is if `ngModel` is used within `ngIf` to bind to
+ * a javascript primitive defined in the parent scope. In this case any modifications made to the
+ * variable within the child scope will override (hide) the value in the parent scope.
+ *
+ * Also, `ngIf` recreates elements using their compiled state. An example of this behavior
+ * is if an element's class attribute is directly modified after it's compiled, using something like
+ * jQuery's `.addClass()` method, and the element is later removed. When `ngIf` recreates the element
+ * the added class will be lost because the original compiled state is used to regenerate the element.
+ *
+ * Additionally, you can provide animations via the `ngAnimate` module to animate the `enter`
+ * and `leave` effects.
+ *
+ * @animations
+ * enter - happens just after the `ngIf` contents change and a new DOM element is created and injected into the `ngIf` container
+ * leave - happens just before the `ngIf` contents are removed from the DOM
+ *
+ * @element ANY
+ * @scope
+ * @priority 600
+ * @param {expression} ngIf If the {@link guide/expression expression} is falsy then
+ *     the element is removed from the DOM tree. If it is truthy a copy of the compiled
+ *     element is added to the DOM tree.
+ *
+ * @example
+  <example module="ngAnimate" deps="angular-animate.js" animations="true">
+    <file name="index.html">
+      Click me: <input type="checkbox" ng-model="checked" ng-init="checked=true" /><br/>
+      Show when checked:
+      <span ng-if="checked" class="animate-if">
+        This is removed when the checkbox is unchecked.
+      </span>
+    </file>
+    <file name="animations.css">
+      .animate-if {
+        background:white;
+        border:1px solid black;
+        padding:10px;
+      }
+
+      .animate-if.ng-enter, .animate-if.ng-leave {
+        -webkit-transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
+        transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
+      }
+
+      .animate-if.ng-enter,
+      .animate-if.ng-leave.ng-leave-active {
+        opacity:0;
+      }
+
+      .animate-if.ng-leave,
+      .animate-if.ng-enter.ng-enter-active {
+        opacity:1;
+      }
+    </file>
+  </example>
+ */
+var ngIfDirective = ['$animate', function($animate) {
+  return {
+    multiElement: true,
+    transclude: 'element',
+    priority: 600,
+    terminal: true,
+    restrict: 'A',
+    $$tlb: true,
+    link: function($scope, $element, $attr, ctrl, $transclude) {
+        var block, childScope, previousElements;
+        $scope.$watch($attr.ngIf, function ngIfWatchAction(value) {
+
+          if (value) {
+            if (!childScope) {
+              $transclude(function(clone, newScope) {
+                childScope = newScope;
+                clone[clone.length++] = document.createComment(' end ngIf: ' + $attr.ngIf + ' ');
+                // Note: We only need the first/last node of the cloned nodes.
+                // However, we need to keep the reference to the jqlite wrapper as it might be changed later
+                // by a directive with templateUrl when its template arrives.
+                block = {
+                  clone: clone
+                };
+                $animate.enter(clone, $element.parent(), $element);
+              });
+            }
+          } else {
+            if (previousElements) {
+              previousElements.remove();
+              previousElements = null;
+            }
+            if (childScope) {
+              childScope.$destroy();
+              childScope = null;
+            }
+            if (block) {
+              previousElements = getBlockNodes(block.clone);
+              $animate.leave(previousElements).then(function() {
+                previousElements = null;
+              });
+              block = null;
+            }
+          }
+        });
+    }
+  };
+}];
+
+/**
+ * @ngdoc directive
+ * @name ngInclude
+ * @restrict ECA
+ *
+ * @description
+ * Fetches, compiles and includes an external HTML fragment.
+ *
+ * By default, the template URL is restricted to the same domain and protocol as the
+ * application document. This is done by calling {@link $sce#getTrustedResourceUrl
+ * $sce.getTrustedResourceUrl} on it. To load templates from other domains or protocols
+ * you may either {@link ng.$sceDelegateProvider#resourceUrlWhitelist whitelist them} or
+ * {@link $sce#trustAsResourceUrl wrap them} as trusted values. Refer to Angular's {@link
+ * ng.$sce Strict Contextual Escaping}.
+ *
+ * In addition, the browser's
+ * [Same Origin Policy](https://code.google.com/p/browsersec/wiki/Part2#Same-origin_policy_for_XMLHttpRequest)
+ * and [Cross-Origin Resource Sharing (CORS)](http://www.w3.org/TR/cors/)
+ * policy may further restrict whether the template is successfully loaded.
+ * For example, `ngInclude` won't work for cross-domain requests on all browsers and for `file://`
+ * access on some browsers.
+ *
+ * @animations
+ * enter - animation is used to bring new content into the browser.
+ * leave - animation is used to animate existing content away.
+ *
+ * The enter and leave animation occur concurrently.
+ *
+ * @scope
+ * @priority 400
+ *
+ * @param {string} ngInclude|src angular expression evaluating to URL. If the source is a string constant,
+ *                 make sure you wrap it in **single** quotes, e.g. `src="'myPartialTemplate.html'"`.
+ * @param {string=} onload Expression to evaluate when a new partial is loaded.
+ *
+ * @param {string=} autoscroll Whether `ngInclude` should call {@link ng.$anchorScroll
+ *                  $anchorScroll} to scroll the viewport after the content is loaded.
+ *
+ *                  - If the attribute is not set, disable scrolling.
+ *                  - If the attribute is set without value, enable scrolling.
+ *                  - Otherwise enable scrolling only if the expression evaluates to truthy value.
+ *
+ * @example
+  <example module="includeExample" deps="angular-animate.js" animations="true">
+    <file name="index.html">
+     <div ng-controller="ExampleController">
+       <select ng-model="template" ng-options="t.name for t in templates">
+        <option value="">(blank)</option>
+       </select>
+       url of the template: <code>{{template.url}}</code>
+       <hr/>
+       <div class="slide-animate-container">
+         <div class="slide-animate" ng-include="template.url"></div>
+       </div>
+     </div>
+    </file>
+    <file name="script.js">
+      angular.module('includeExample', ['ngAnimate'])
+        .controller('ExampleController', ['$scope', function($scope) {
+          $scope.templates =
+            [ { name: 'template1.html', url: 'template1.html'},
+              { name: 'template2.html', url: 'template2.html'} ];
+          $scope.template = $scope.templates[0];
+        }]);
+     </file>
+    <file name="template1.html">
+      Content of template1.html
+    </file>
+    <file name="template2.html">
+      Content of template2.html
+    </file>
+    <file name="animations.css">
+      .slide-animate-container {
+        position:relative;
+        background:white;
+        border:1px solid black;
+        height:40px;
+        overflow:hidden;
+      }
+
+      .slide-animate {
+        padding:10px;
+      }
+
+      .slide-animate.ng-enter, .slide-animate.ng-leave {
+        -webkit-transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
+        transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
+
+        position:absolute;
+        top:0;
+        left:0;
+        right:0;
+        bottom:0;
+        display:block;
+        padding:10px;
+      }
+
+      .slide-animate.ng-enter {
+        top:-50px;
+      }
+      .slide-animate.ng-enter.ng-enter-active {
+        top:0;
+      }
+
+      .slide-animate.ng-leave {
+        top:0;
+      }
+      .slide-animate.ng-leave.ng-leave-active {
+        top:50px;
+      }
+    </file>
+    <file name="protractor.js" type="protractor">
+      var templateSelect = element(by.model('template'));
+      var includeElem = element(by.css('[ng-include]'));
+
+      it('should load template1.html', function() {
+        expect(includeElem.getText()).toMatch(/Content of template1.html/);
+      });
+
+      it('should load template2.html', function() {
+        if (browser.params.browser == 'firefox') {
+          // Firefox can't handle using selects
+          // See https://github.com/angular/protractor/issues/480
+          return;
+        }
+        templateSelect.click();
+        templateSelect.all(by.css('option')).get(2).click();
+        expect(includeElem.getText()).toMatch(/Content of template2.html/);
+      });
+
+      it('should change to blank', function() {
+        if (browser.params.browser == 'firefox') {
+          // Firefox can't handle using selects
+          return;
+        }
+        templateSelect.click();
+        templateSelect.all(by.css('option')).get(0).click();
+        expect(includeElem.isPresent()).toBe(false);
+      });
+    </file>
+  </example>
+ */
+
+
+/**
+ * @ngdoc event
+ * @name ngInclude#$includeContentRequested
+ * @eventType emit on the scope ngInclude was declared in
+ * @description
+ * Emitted every time the ngInclude content is requested.
+ *
+ * @param {Object} angularEvent Synthetic event object.
+ * @param {String} src URL of content to load.
+ */
+
+
+/**
+ * @ngdoc event
+ * @name ngInclude#$includeContentLoaded
+ * @eventType emit on the current ngInclude scope
+ * @description
+ * Emitted every time the ngInclude content is reloaded.
+ *
+ * @param {Object} angularEvent Synthetic event object.
+ * @param {String} src URL of content to load.
+ */
+
+
+/**
+ * @ngdoc event
+ * @name ngInclude#$includeContentError
+ * @eventType emit on the scope ngInclude was declared in
+ * @description
+ * Emitted when a template HTTP request yields an erroneous response (status < 200 || status > 299)
+ *
+ * @param {Object} angularEvent Synthetic event object.
+ * @param {String} src URL of content to load.
+ */
+var ngIncludeDirective = ['$templateRequest', '$anchorScroll', '$animate',
+                  function($templateRequest,   $anchorScroll,   $animate) {
+  return {
+    restrict: 'ECA',
+    priority: 400,
+    terminal: true,
+    transclude: 'element',
+    controller: angular.noop,
+    compile: function(element, attr) {
+      var srcExp = attr.ngInclude || attr.src,
+          onloadExp = attr.onload || '',
+          autoScrollExp = attr.autoscroll;
+
+      return function(scope, $element, $attr, ctrl, $transclude) {
+        var changeCounter = 0,
+            currentScope,
+            previousElement,
+            currentElement;
+
+        var cleanupLastIncludeContent = function() {
+          if (previousElement) {
+            previousElement.remove();
+            previousElement = null;
+          }
+          if (currentScope) {
+            currentScope.$destroy();
+            currentScope = null;
+          }
+          if (currentElement) {
+            $animate.leave(currentElement).then(function() {
+              previousElement = null;
+            });
+            previousElement = currentElement;
+            currentElement = null;
+          }
+        };
+
+        scope.$watch(srcExp, function ngIncludeWatchAction(src) {
+          var afterAnimation = function() {
+            if (isDefined(autoScrollExp) && (!autoScrollExp || scope.$eval(autoScrollExp))) {
+              $anchorScroll();
+            }
+          };
+          var thisChangeId = ++changeCounter;
+
+          if (src) {
+            //set the 2nd param to true to ignore the template request error so that the inner
+            //contents and scope can be cleaned up.
+            $templateRequest(src, true).then(function(response) {
+              if (thisChangeId !== changeCounter) return;
+              var newScope = scope.$new();
+              ctrl.template = response;
+
+              // Note: This will also link all children of ng-include that were contained in the original
+              // html. If that content contains controllers, ... they could pollute/change the scope.
+              // However, using ng-include on an element with additional content does not make sense...
+              // Note: We can't remove them in the cloneAttchFn of $transclude as that
+              // function is called before linking the content, which would apply child
+              // directives to non existing elements.
+              var clone = $transclude(newScope, function(clone) {
+                cleanupLastIncludeContent();
+                $animate.enter(clone, null, $element).then(afterAnimation);
+              });
+
+              currentScope = newScope;
+              currentElement = clone;
+
+              currentScope.$emit('$includeContentLoaded', src);
+              scope.$eval(onloadExp);
+            }, function() {
+              if (thisChangeId === changeCounter) {
+                cleanupLastIncludeContent();
+                scope.$emit('$includeContentError', src);
+              }
+            });
+            scope.$emit('$includeContentRequested', src);
+          } else {
+            cleanupLastIncludeContent();
+            ctrl.template = null;
+          }
+        });
+      };
+    }
+  };
+}];
+
+// This directive is called during the $transclude call of the first `ngInclude` directive.
+// It will replace and compile the content of the element with the loaded template.
+// We need this directive so that the element content is already filled when
+// the link function of another directive on the same element as ngInclude
+// is called.
+var ngIncludeFillContentDirective = ['$compile',
+  function($compile) {
+    return {
+      restrict: 'ECA',
+      priority: -400,
+      require: 'ngInclude',
+      link: function(scope, $element, $attr, ctrl) {
+        if (/SVG/.test($element[0].toString())) {
+          // WebKit: https://bugs.webkit.org/show_bug.cgi?id=135698 --- SVG elements do not
+          // support innerHTML, so detect this here and try to generate the contents
+          // specially.
+          $element.empty();
+          $compile(jqLiteBuildFragment(ctrl.template, document).childNodes)(scope,
+              function namespaceAdaptedClone(clone) {
+            $element.append(clone);
+          }, {futureParentElement: $element});
+          return;
+        }
+
+        $element.html(ctrl.template);
+        $compile($element.contents())(scope);
+      }
+    };
+  }];
+
+/**
+ * @ngdoc directive
+ * @name ngInit
+ * @restrict AC
+ *
+ * @description
+ * The `ngInit` directive allows you to evaluate an expression in the
+ * current scope.
+ *
+ * <div class="alert alert-error">
+ * The only appropriate use of `ngInit` is for aliasing special properties of
+ * {@link ng.directive:ngRepeat `ngRepeat`}, as seen in the demo below. Besides this case, you
+ * should use {@link guide/controller controllers} rather than `ngInit`
+ * to initialize values on a scope.
+ * </div>
+ * <div class="alert alert-warning">
+ * **Note**: If you have assignment in `ngInit` along with {@link ng.$filter `$filter`}, make
+ * sure you have parenthesis for correct precedence:
+ * <pre class="prettyprint">
+ * `<div ng-init="test1 = (data | orderBy:'name')"></div>`
+ * </pre>
+ * </div>
+ *
+ * @priority 450
+ *
+ * @element ANY
+ * @param {expression} ngInit {@link guide/expression Expression} to eval.
+ *
+ * @example
+   <example module="initExample">
+     <file name="index.html">
+   <script>
+     angular.module('initExample', [])
+       .controller('ExampleController', ['$scope', function($scope) {
+         $scope.list = [['a', 'b'], ['c', 'd']];
+       }]);
+   </script>
+   <div ng-controller="ExampleController">
+     <div ng-repeat="innerList in list" ng-init="outerIndex = $index">
+       <div ng-repeat="value in innerList" ng-init="innerIndex = $index">
+          <span class="example-init">list[ {{outerIndex}} ][ {{innerIndex}} ] = {{value}};</span>
+       </div>
+     </div>
+   </div>
+     </file>
+     <file name="protractor.js" type="protractor">
+       it('should alias index positions', function() {
+         var elements = element.all(by.css('.example-init'));
+         expect(elements.get(0).getText()).toBe('list[ 0 ][ 0 ] = a;');
+         expect(elements.get(1).getText()).toBe('list[ 0 ][ 1 ] = b;');
+         expect(elements.get(2).getText()).toBe('list[ 1 ][ 0 ] = c;');
+         expect(elements.get(3).getText()).toBe('list[ 1 ][ 1 ] = d;');
+       });
+     </file>
+   </example>
+ */
+var ngInitDirective = ngDirective({
+  priority: 450,
+  compile: function() {
+    return {
+      pre: function(scope, element, attrs) {
+        scope.$eval(attrs.ngInit);
+      }
+    };
+  }
+});
+
+/**
+ * @ngdoc directive
+ * @name ngList
+ *
+ * @description
+ * Text input that converts between a delimited string and an array of strings. The default
+ * delimiter is a comma followed by a space - equivalent to `ng-list=", "`. You can specify a custom
+ * delimiter as the value of the `ngList` attribute - for example, `ng-list=" | "`.
+ *
+ * The behaviour of the directive is affected by the use of the `ngTrim` attribute.
+ * * If `ngTrim` is set to `"false"` then whitespace around both the separator and each
+ *   list item is respected. This implies that the user of the directive is responsible for
+ *   dealing with whitespace but also allows you to use whitespace as a delimiter, such as a
+ *   tab or newline character.
+ * * Otherwise whitespace around the delimiter is ignored when splitting (although it is respected
+ *   when joining the list items back together) and whitespace around each list item is stripped
+ *   before it is added to the model.
+ *
+ * ### Example with Validation
+ *
+ * <example name="ngList-directive" module="listExample">
+ *   <file name="app.js">
+ *      angular.module('listExample', [])
+ *        .controller('ExampleController', ['$scope', function($scope) {
+ *          $scope.names = ['morpheus', 'neo', 'trinity'];
+ *        }]);
+ *   </file>
+ *   <file name="index.html">
+ *    <form name="myForm" ng-controller="ExampleController">
+ *      List: <input name="namesInput" ng-model="names" ng-list required>
+ *      <span class="error" ng-show="myForm.namesInput.$error.required">
+ *        Required!</span>
+ *      <br>
+ *      <tt>names = {{names}}</tt><br/>
+ *      <tt>myForm.namesInput.$valid = {{myForm.namesInput.$valid}}</tt><br/>
+ *      <tt>myForm.namesInput.$error = {{myForm.namesInput.$error}}</tt><br/>
+ *      <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+ *      <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+ *     </form>
+ *   </file>
+ *   <file name="protractor.js" type="protractor">
+ *     var listInput = element(by.model('names'));
+ *     var names = element(by.exactBinding('names'));
+ *     var valid = element(by.binding('myForm.namesInput.$valid'));
+ *     var error = element(by.css('span.error'));
+ *
+ *     it('should initialize to model', function() {
+ *       expect(names.getText()).toContain('["morpheus","neo","trinity"]');
+ *       expect(valid.getText()).toContain('true');
+ *       expect(error.getCssValue('display')).toBe('none');
+ *     });
+ *
+ *     it('should be invalid if empty', function() {
+ *       listInput.clear();
+ *       listInput.sendKeys('');
+ *
+ *       expect(names.getText()).toContain('');
+ *       expect(valid.getText()).toContain('false');
+ *       expect(error.getCssValue('display')).not.toBe('none');
+ *     });
+ *   </file>
+ * </example>
+ *
+ * ### Example - splitting on whitespace
+ * <example name="ngList-directive-newlines">
+ *   <file name="index.html">
+ *    <textarea ng-model="list" ng-list="&#10;" ng-trim="false"></textarea>
+ *    <pre>{{ list | json }}</pre>
+ *   </file>
+ *   <file name="protractor.js" type="protractor">
+ *     it("should split the text by newlines", function() {
+ *       var listInput = element(by.model('list'));
+ *       var output = element(by.binding('list | json'));
+ *       listInput.sendKeys('abc\ndef\nghi');
+ *       expect(output.getText()).toContain('[\n  "abc",\n  "def",\n  "ghi"\n]');
+ *     });
+ *   </file>
+ * </example>
+ *
+ * @element input
+ * @param {string=} ngList optional delimiter that should be used to split the value.
+ */
+var ngListDirective = function() {
+  return {
+    restrict: 'A',
+    priority: 100,
+    require: 'ngModel',
+    link: function(scope, element, attr, ctrl) {
+      // We want to control whitespace trimming so we use this convoluted approach
+      // to access the ngList attribute, which doesn't pre-trim the attribute
+      var ngList = element.attr(attr.$attr.ngList) || ', ';
+      var trimValues = attr.ngTrim !== 'false';
+      var separator = trimValues ? trim(ngList) : ngList;
+
+      var parse = function(viewValue) {
+        // If the viewValue is invalid (say required but empty) it will be `undefined`
+        if (isUndefined(viewValue)) return;
+
+        var list = [];
+
+        if (viewValue) {
+          forEach(viewValue.split(separator), function(value) {
+            if (value) list.push(trimValues ? trim(value) : value);
+          });
+        }
+
+        return list;
+      };
+
+      ctrl.$parsers.push(parse);
+      ctrl.$formatters.push(function(value) {
+        if (isArray(value)) {
+          return value.join(ngList);
+        }
+
+        return undefined;
+      });
+
+      // Override the standard $isEmpty because an empty array means the input is empty.
+      ctrl.$isEmpty = function(value) {
+        return !value || !value.length;
+      };
+    }
+  };
+};
+
+/* global VALID_CLASS: true,
+  INVALID_CLASS: true,
+  PRISTINE_CLASS: true,
+  DIRTY_CLASS: true,
+  UNTOUCHED_CLASS: true,
+  TOUCHED_CLASS: true,
+*/
+
+var VALID_CLASS = 'ng-valid',
+    INVALID_CLASS = 'ng-invalid',
+    PRISTINE_CLASS = 'ng-pristine',
+    DIRTY_CLASS = 'ng-dirty',
+    UNTOUCHED_CLASS = 'ng-untouched',
+    TOUCHED_CLASS = 'ng-touched',
+    PENDING_CLASS = 'ng-pending';
+
+var ngModelMinErr = minErr('ngModel');
+
+/**
+ * @ngdoc type
+ * @name ngModel.NgModelController
+ *
+ * @property {string} $viewValue Actual string value in the view.
+ * @property {*} $modelValue The value in the model that the control is bound to.
+ * @property {Array.<Function>} $parsers Array of functions to execute, as a pipeline, whenever
+       the control reads value from the DOM. The functions are called in array order, each passing
+       its return value through to the next. The last return value is forwarded to the
+       {@link ngModel.NgModelController#$validators `$validators`} collection.
+
+Parsers are used to sanitize / convert the {@link ngModel.NgModelController#$viewValue
+`$viewValue`}.
+
+Returning `undefined` from a parser means a parse error occurred. In that case,
+no {@link ngModel.NgModelController#$validators `$validators`} will run and the `ngModel`
+will be set to `undefined` unless {@link ngModelOptions `ngModelOptions.allowInvalid`}
+is set to `true`. The parse error is stored in `ngModel.$error.parse`.
+
+ *
+ * @property {Array.<Function>} $formatters Array of functions to execute, as a pipeline, whenever
+       the model value changes. The functions are called in reverse array order, each passing the value through to the
+       next. The last return value is used as the actual DOM value.
+       Used to format / convert values for display in the control.
+ * ```js
+ * function formatter(value) {
+ *   if (value) {
+ *     return value.toUpperCase();
+ *   }
+ * }
+ * ngModel.$formatters.push(formatter);
+ * ```
+ *
+ * @property {Object.<string, function>} $validators A collection of validators that are applied
+ *      whenever the model value changes. The key value within the object refers to the name of the
+ *      validator while the function refers to the validation operation. The validation operation is
+ *      provided with the model value as an argument and must return a true or false value depending
+ *      on the response of that validation.
+ *
+ * ```js
+ * ngModel.$validators.validCharacters = function(modelValue, viewValue) {
+ *   var value = modelValue || viewValue;
+ *   return /[0-9]+/.test(value) &&
+ *          /[a-z]+/.test(value) &&
+ *          /[A-Z]+/.test(value) &&
+ *          /\W+/.test(value);
+ * };
+ * ```
+ *
+ * @property {Object.<string, function>} $asyncValidators A collection of validations that are expected to
+ *      perform an asynchronous validation (e.g. a HTTP request). The validation function that is provided
+ *      is expected to return a promise when it is run during the model validation process. Once the promise
+ *      is delivered then the validation status will be set to true when fulfilled and false when rejected.
+ *      When the asynchronous validators are triggered, each of the validators will run in parallel and the model
+ *      value will only be updated once all validators have been fulfilled. As long as an asynchronous validator
+ *      is unfulfilled, its key will be added to the controllers `$pending` property. Also, all asynchronous validators
+ *      will only run once all synchronous validators have passed.
+ *
+ * Please note that if $http is used then it is important that the server returns a success HTTP response code
+ * in order to fulfill the validation and a status level of `4xx` in order to reject the validation.
+ *
+ * ```js
+ * ngModel.$asyncValidators.uniqueUsername = function(modelValue, viewValue) {
+ *   var value = modelValue || viewValue;
+ *
+ *   // Lookup user by username
+ *   return $http.get('/api/users/' + value).
+ *      then(function resolved() {
+ *        //username exists, this means validation fails
+ *        return $q.reject('exists');
+ *      }, function rejected() {
+ *        //username does not exist, therefore this validation passes
+ *        return true;
+ *      });
+ * };
+ * ```
+ *
+ * @property {Array.<Function>} $viewChangeListeners Array of functions to execute whenever the
+ *     view value has changed. It is called with no arguments, and its return value is ignored.
+ *     This can be used in place of additional $watches against the model value.
+ *
+ * @property {Object} $error An object hash with all failing validator ids as keys.
+ * @property {Object} $pending An object hash with all pending validator ids as keys.
+ *
+ * @property {boolean} $untouched True if control has not lost focus yet.
+ * @property {boolean} $touched True if control has lost focus.
+ * @property {boolean} $pristine True if user has not interacted with the control yet.
+ * @property {boolean} $dirty True if user has already interacted with the control.
+ * @property {boolean} $valid True if there is no error.
+ * @property {boolean} $invalid True if at least one error on the control.
+ * @property {string} $name The name attribute of the control.
+ *
+ * @description
+ *
+ * `NgModelController` provides API for the {@link ngModel `ngModel`} directive.
+ * The controller contains services for data-binding, validation, CSS updates, and value formatting
+ * and parsing. It purposefully does not contain any logic which deals with DOM rendering or
+ * listening to DOM events.
+ * Such DOM related logic should be provided by other directives which make use of
+ * `NgModelController` for data-binding to control elements.
+ * Angular provides this DOM logic for most {@link input `input`} elements.
+ * At the end of this page you can find a {@link ngModel.NgModelController#custom-control-example
+ * custom control example} that uses `ngModelController` to bind to `contenteditable` elements.
+ *
+ * @example
+ * ### Custom Control Example
+ * This example shows how to use `NgModelController` with a custom control to achieve
+ * data-binding. Notice how different directives (`contenteditable`, `ng-model`, and `required`)
+ * collaborate together to achieve the desired result.
+ *
+ * `contenteditable` is an HTML5 attribute, which tells the browser to let the element
+ * contents be edited in place by the user.
+ *
+ * We are using the {@link ng.service:$sce $sce} service here and include the {@link ngSanitize $sanitize}
+ * module to automatically remove "bad" content like inline event listener (e.g. `<span onclick="...">`).
+ * However, as we are using `$sce` the model can still decide to provide unsafe content if it marks
+ * that content using the `$sce` service.
+ *
+ * <example name="NgModelController" module="customControl" deps="angular-sanitize.js">
+    <file name="style.css">
+      [contenteditable] {
+        border: 1px solid black;
+        background-color: white;
+        min-height: 20px;
+      }
+
+      .ng-invalid {
+        border: 1px solid red;
+      }
+
+    </file>
+    <file name="script.js">
+      angular.module('customControl', ['ngSanitize']).
+        directive('contenteditable', ['$sce', function($sce) {
+          return {
+            restrict: 'A', // only activate on element attribute
+            require: '?ngModel', // get a hold of NgModelController
+            link: function(scope, element, attrs, ngModel) {
+              if (!ngModel) return; // do nothing if no ng-model
+
+              // Specify how UI should be updated
+              ngModel.$render = function() {
+                element.html($sce.getTrustedHtml(ngModel.$viewValue || ''));
+              };
+
+              // Listen for change events to enable binding
+              element.on('blur keyup change', function() {
+                scope.$evalAsync(read);
+              });
+              read(); // initialize
+
+              // Write data to the model
+              function read() {
+                var html = element.html();
+                // When we clear the content editable the browser leaves a <br> behind
+                // If strip-br attribute is provided then we strip this out
+                if ( attrs.stripBr && html == '<br>' ) {
+                  html = '';
+                }
+                ngModel.$setViewValue(html);
+              }
+            }
+          };
+        }]);
+    </file>
+    <file name="index.html">
+      <form name="myForm">
+       <div contenteditable
+            name="myWidget" ng-model="userContent"
+            strip-br="true"
+            required>Change me!</div>
+        <span ng-show="myForm.myWidget.$error.required">Required!</span>
+       <hr>
+       <textarea ng-model="userContent"></textarea>
+      </form>
+    </file>
+    <file name="protractor.js" type="protractor">
+    it('should data-bind and become invalid', function() {
+      if (browser.params.browser == 'safari' || browser.params.browser == 'firefox') {
+        // SafariDriver can't handle contenteditable
+        // and Firefox driver can't clear contenteditables very well
+        return;
+      }
+      var contentEditable = element(by.css('[contenteditable]'));
+      var content = 'Change me!';
+
+      expect(contentEditable.getText()).toEqual(content);
+
+      contentEditable.clear();
+      contentEditable.sendKeys(protractor.Key.BACK_SPACE);
+      expect(contentEditable.getText()).toEqual('');
+      expect(contentEditable.getAttribute('class')).toMatch(/ng-invalid-required/);
+    });
+    </file>
+ * </example>
+ *
+ *
+ */
+var NgModelController = ['$scope', '$exceptionHandler', '$attrs', '$element', '$parse', '$animate', '$timeout', '$rootScope', '$q', '$interpolate',
+    function($scope, $exceptionHandler, $attr, $element, $parse, $animate, $timeout, $rootScope, $q, $interpolate) {
+  this.$viewValue = Number.NaN;
+  this.$modelValue = Number.NaN;
+  this.$$rawModelValue = undefined; // stores the parsed modelValue / model set from scope regardless of validity.
+  this.$validators = {};
+  this.$asyncValidators = {};
+  this.$parsers = [];
+  this.$formatters = [];
+  this.$viewChangeListeners = [];
+  this.$untouched = true;
+  this.$touched = false;
+  this.$pristine = true;
+  this.$dirty = false;
+  this.$valid = true;
+  this.$invalid = false;
+  this.$error = {}; // keep invalid keys here
+  this.$$success = {}; // keep valid keys here
+  this.$pending = undefined; // keep pending keys here
+  this.$name = $interpolate($attr.name || '', false)($scope);
+
+
+  var parsedNgModel = $parse($attr.ngModel),
+      parsedNgModelAssign = parsedNgModel.assign,
+      ngModelGet = parsedNgModel,
+      ngModelSet = parsedNgModelAssign,
+      pendingDebounce = null,
+      parserValid,
+      ctrl = this;
+
+  this.$$setOptions = function(options) {
+    ctrl.$options = options;
+    if (options && options.getterSetter) {
+      var invokeModelGetter = $parse($attr.ngModel + '()'),
+          invokeModelSetter = $parse($attr.ngModel + '($$$p)');
+
+      ngModelGet = function($scope) {
+        var modelValue = parsedNgModel($scope);
+        if (isFunction(modelValue)) {
+          modelValue = invokeModelGetter($scope);
+        }
+        return modelValue;
+      };
+      ngModelSet = function($scope, newValue) {
+        if (isFunction(parsedNgModel($scope))) {
+          invokeModelSetter($scope, {$$$p: ctrl.$modelValue});
+        } else {
+          parsedNgModelAssign($scope, ctrl.$modelValue);
+        }
+      };
+    } else if (!parsedNgModel.assign) {
+      throw ngModelMinErr('nonassign', "Expression '{0}' is non-assignable. Element: {1}",
+          $attr.ngModel, startingTag($element));
+    }
+  };
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$render
+   *
+   * @description
+   * Called when the view needs to be updated. It is expected that the user of the ng-model
+   * directive will implement this method.
+   *
+   * The `$render()` method is invoked in the following situations:
+   *
+   * * `$rollbackViewValue()` is called.  If we are rolling back the view value to the last
+   *   committed value then `$render()` is called to update the input control.
+   * * The value referenced by `ng-model` is changed programmatically and both the `$modelValue` and
+   *   the `$viewValue` are different to last time.
+   *
+   * Since `ng-model` does not do a deep watch, `$render()` is only invoked if the values of
+   * `$modelValue` and `$viewValue` are actually different to their previous value. If `$modelValue`
+   * or `$viewValue` are objects (rather than a string or number) then `$render()` will not be
+   * invoked if you only change a property on the objects.
+   */
+  this.$render = noop;
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$isEmpty
+   *
+   * @description
+   * This is called when we need to determine if the value of an input is empty.
+   *
+   * For instance, the required directive does this to work out if the input has data or not.
+   *
+   * The default `$isEmpty` function checks whether the value is `undefined`, `''`, `null` or `NaN`.
+   *
+   * You can override this for input directives whose concept of being empty is different to the
+   * default. The `checkboxInputType` directive does this because in its case a value of `false`
+   * implies empty.
+   *
+   * @param {*} value The value of the input to check for emptiness.
+   * @returns {boolean} True if `value` is "empty".
+   */
+  this.$isEmpty = function(value) {
+    return isUndefined(value) || value === '' || value === null || value !== value;
+  };
+
+  var parentForm = $element.inheritedData('$formController') || nullFormCtrl,
+      currentValidationRunId = 0;
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$setValidity
+   *
+   * @description
+   * Change the validity state, and notify the form.
+   *
+   * This method can be called within $parsers/$formatters or a custom validation implementation.
+   * However, in most cases it should be sufficient to use the `ngModel.$validators` and
+   * `ngModel.$asyncValidators` collections which will call `$setValidity` automatically.
+   *
+   * @param {string} validationErrorKey Name of the validator. The `validationErrorKey` will be assigned
+   *        to either `$error[validationErrorKey]` or `$pending[validationErrorKey]`
+   *        (for unfulfilled `$asyncValidators`), so that it is available for data-binding.
+   *        The `validationErrorKey` should be in camelCase and will get converted into dash-case
+   *        for class name. Example: `myError` will result in `ng-valid-my-error` and `ng-invalid-my-error`
+   *        class and can be bound to as  `{{someForm.someControl.$error.myError}}` .
+   * @param {boolean} isValid Whether the current state is valid (true), invalid (false), pending (undefined),
+   *                          or skipped (null). Pending is used for unfulfilled `$asyncValidators`.
+   *                          Skipped is used by Angular when validators do not run because of parse errors and
+   *                          when `$asyncValidators` do not run because any of the `$validators` failed.
+   */
+  addSetValidityMethod({
+    ctrl: this,
+    $element: $element,
+    set: function(object, property) {
+      object[property] = true;
+    },
+    unset: function(object, property) {
+      delete object[property];
+    },
+    parentForm: parentForm,
+    $animate: $animate
+  });
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$setPristine
+   *
+   * @description
+   * Sets the control to its pristine state.
+   *
+   * This method can be called to remove the `ng-dirty` class and set the control to its pristine
+   * state (`ng-pristine` class). A model is considered to be pristine when the control
+   * has not been changed from when first compiled.
+   */
+  this.$setPristine = function() {
+    ctrl.$dirty = false;
+    ctrl.$pristine = true;
+    $animate.removeClass($element, DIRTY_CLASS);
+    $animate.addClass($element, PRISTINE_CLASS);
+  };
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$setDirty
+   *
+   * @description
+   * Sets the control to its dirty state.
+   *
+   * This method can be called to remove the `ng-pristine` class and set the control to its dirty
+   * state (`ng-dirty` class). A model is considered to be dirty when the control has been changed
+   * from when first compiled.
+   */
+  this.$setDirty = function() {
+    ctrl.$dirty = true;
+    ctrl.$pristine = false;
+    $animate.removeClass($element, PRISTINE_CLASS);
+    $animate.addClass($element, DIRTY_CLASS);
+    parentForm.$setDirty();
+  };
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$setUntouched
+   *
+   * @description
+   * Sets the control to its untouched state.
+   *
+   * This method can be called to remove the `ng-touched` class and set the control to its
+   * untouched state (`ng-untouched` class). Upon compilation, a model is set as untouched
+   * by default, however this function can be used to restore that state if the model has
+   * already been touched by the user.
+   */
+  this.$setUntouched = function() {
+    ctrl.$touched = false;
+    ctrl.$untouched = true;
+    $animate.setClass($element, UNTOUCHED_CLASS, TOUCHED_CLASS);
+  };
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$setTouched
+   *
+   * @description
+   * Sets the control to its touched state.
+   *
+   * This method can be called to remove the `ng-untouched` class and set the control to its
+   * touched state (`ng-touched` class). A model is considered to be touched when the user has
+   * first focused the control element and then shifted focus away from the control (blur event).
+   */
+  this.$setTouched = function() {
+    ctrl.$touched = true;
+    ctrl.$untouched = false;
+    $animate.setClass($element, TOUCHED_CLASS, UNTOUCHED_CLASS);
+  };
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$rollbackViewValue
+   *
+   * @description
+   * Cancel an update and reset the input element's value to prevent an update to the `$modelValue`,
+   * which may be caused by a pending debounced event or because the input is waiting for a some
+   * future event.
+   *
+   * If you have an input that uses `ng-model-options` to set up debounced events or events such
+   * as blur you can have a situation where there is a period when the `$viewValue`
+   * is out of synch with the ngModel's `$modelValue`.
+   *
+   * In this case, you can run into difficulties if you try to update the ngModel's `$modelValue`
+   * programmatically before these debounced/future events have resolved/occurred, because Angular's
+   * dirty checking mechanism is not able to tell whether the model has actually changed or not.
+   *
+   * The `$rollbackViewValue()` method should be called before programmatically changing the model of an
+   * input which may have such events pending. This is important in order to make sure that the
+   * input field will be updated with the new model value and any pending operations are cancelled.
+   *
+   * <example name="ng-model-cancel-update" module="cancel-update-example">
+   *   <file name="app.js">
+   *     angular.module('cancel-update-example', [])
+   *
+   *     .controller('CancelUpdateController', ['$scope', function($scope) {
+   *       $scope.resetWithCancel = function(e) {
+   *         if (e.keyCode == 27) {
+   *           $scope.myForm.myInput1.$rollbackViewValue();
+   *           $scope.myValue = '';
+   *         }
+   *       };
+   *       $scope.resetWithoutCancel = function(e) {
+   *         if (e.keyCode == 27) {
+   *           $scope.myValue = '';
+   *         }
+   *       };
+   *     }]);
+   *   </file>
+   *   <file name="index.html">
+   *     <div ng-controller="CancelUpdateController">
+   *       <p>Try typing something in each input.  See that the model only updates when you
+   *          blur off the input.
+   *        </p>
+   *        <p>Now see what happens if you start typing then press the Escape key</p>
+   *
+   *       <form name="myForm" ng-model-options="{ updateOn: 'blur' }">
+   *         <p>With $rollbackViewValue()</p>
+   *         <input name="myInput1" ng-model="myValue" ng-keydown="resetWithCancel($event)"><br/>
+   *         myValue: "{{ myValue }}"
+   *
+   *         <p>Without $rollbackViewValue()</p>
+   *         <input name="myInput2" ng-model="myValue" ng-keydown="resetWithoutCancel($event)"><br/>
+   *         myValue: "{{ myValue }}"
+   *       </form>
+   *     </div>
+   *   </file>
+   * </example>
+   */
+  this.$rollbackViewValue = function() {
+    $timeout.cancel(pendingDebounce);
+    ctrl.$viewValue = ctrl.$$lastCommittedViewValue;
+    ctrl.$render();
+  };
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$validate
+   *
+   * @description
+   * Runs each of the registered validators (first synchronous validators and then
+   * asynchronous validators).
+   * If the validity changes to invalid, the model will be set to `undefined`,
+   * unless {@link ngModelOptions `ngModelOptions.allowInvalid`} is `true`.
+   * If the validity changes to valid, it will set the model to the last available valid
+   * `$modelValue`, i.e. either the last parsed value or the last value set from the scope.
+   */
+  this.$validate = function() {
+    // ignore $validate before model is initialized
+    if (isNumber(ctrl.$modelValue) && isNaN(ctrl.$modelValue)) {
+      return;
+    }
+
+    var viewValue = ctrl.$$lastCommittedViewValue;
+    // Note: we use the $$rawModelValue as $modelValue might have been
+    // set to undefined during a view -> model update that found validation
+    // errors. We can't parse the view here, since that could change
+    // the model although neither viewValue nor the model on the scope changed
+    var modelValue = ctrl.$$rawModelValue;
+
+    var prevValid = ctrl.$valid;
+    var prevModelValue = ctrl.$modelValue;
+
+    var allowInvalid = ctrl.$options && ctrl.$options.allowInvalid;
+
+    ctrl.$$runValidators(modelValue, viewValue, function(allValid) {
+      // If there was no change in validity, don't update the model
+      // This prevents changing an invalid modelValue to undefined
+      if (!allowInvalid && prevValid !== allValid) {
+        // Note: Don't check ctrl.$valid here, as we could have
+        // external validators (e.g. calculated on the server),
+        // that just call $setValidity and need the model value
+        // to calculate their validity.
+        ctrl.$modelValue = allValid ? modelValue : undefined;
+
+        if (ctrl.$modelValue !== prevModelValue) {
+          ctrl.$$writeModelToScope();
+        }
+      }
+    });
+
+  };
+
+  this.$$runValidators = function(modelValue, viewValue, doneCallback) {
+    currentValidationRunId++;
+    var localValidationRunId = currentValidationRunId;
+
+    // check parser error
+    if (!processParseErrors()) {
+      validationDone(false);
+      return;
+    }
+    if (!processSyncValidators()) {
+      validationDone(false);
+      return;
+    }
+    processAsyncValidators();
+
+    function processParseErrors() {
+      var errorKey = ctrl.$$parserName || 'parse';
+      if (parserValid === undefined) {
+        setValidity(errorKey, null);
+      } else {
+        if (!parserValid) {
+          forEach(ctrl.$validators, function(v, name) {
+            setValidity(name, null);
+          });
+          forEach(ctrl.$asyncValidators, function(v, name) {
+            setValidity(name, null);
+          });
+        }
+        // Set the parse error last, to prevent unsetting it, should a $validators key == parserName
+        setValidity(errorKey, parserValid);
+        return parserValid;
+      }
+      return true;
+    }
+
+    function processSyncValidators() {
+      var syncValidatorsValid = true;
+      forEach(ctrl.$validators, function(validator, name) {
+        var result = validator(modelValue, viewValue);
+        syncValidatorsValid = syncValidatorsValid && result;
+        setValidity(name, result);
+      });
+      if (!syncValidatorsValid) {
+        forEach(ctrl.$asyncValidators, function(v, name) {
+          setValidity(name, null);
+        });
+        return false;
+      }
+      return true;
+    }
+
+    function processAsyncValidators() {
+      var validatorPromises = [];
+      var allValid = true;
+      forEach(ctrl.$asyncValidators, function(validator, name) {
+        var promise = validator(modelValue, viewValue);
+        if (!isPromiseLike(promise)) {
+          throw ngModelMinErr("$asyncValidators",
+            "Expected asynchronous validator to return a promise but got '{0}' instead.", promise);
+        }
+        setValidity(name, undefined);
+        validatorPromises.push(promise.then(function() {
+          setValidity(name, true);
+        }, function(error) {
+          allValid = false;
+          setValidity(name, false);
+        }));
+      });
+      if (!validatorPromises.length) {
+        validationDone(true);
+      } else {
+        $q.all(validatorPromises).then(function() {
+          validationDone(allValid);
+        }, noop);
+      }
+    }
+
+    function setValidity(name, isValid) {
+      if (localValidationRunId === currentValidationRunId) {
+        ctrl.$setValidity(name, isValid);
+      }
+    }
+
+    function validationDone(allValid) {
+      if (localValidationRunId === currentValidationRunId) {
+
+        doneCallback(allValid);
+      }
+    }
+  };
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$commitViewValue
+   *
+   * @description
+   * Commit a pending update to the `$modelValue`.
+   *
+   * Updates may be pending by a debounced event or because the input is waiting for a some future
+   * event defined in `ng-model-options`. this method is rarely needed as `NgModelController`
+   * usually handles calling this in response to input events.
+   */
+  this.$commitViewValue = function() {
+    var viewValue = ctrl.$viewValue;
+
+    $timeout.cancel(pendingDebounce);
+
+    // If the view value has not changed then we should just exit, except in the case where there is
+    // a native validator on the element. In this case the validation state may have changed even though
+    // the viewValue has stayed empty.
+    if (ctrl.$$lastCommittedViewValue === viewValue && (viewValue !== '' || !ctrl.$$hasNativeValidators)) {
+      return;
+    }
+    ctrl.$$lastCommittedViewValue = viewValue;
+
+    // change to dirty
+    if (ctrl.$pristine) {
+      this.$setDirty();
+    }
+    this.$$parseAndValidate();
+  };
+
+  this.$$parseAndValidate = function() {
+    var viewValue = ctrl.$$lastCommittedViewValue;
+    var modelValue = viewValue;
+    parserValid = isUndefined(modelValue) ? undefined : true;
+
+    if (parserValid) {
+      for (var i = 0; i < ctrl.$parsers.length; i++) {
+        modelValue = ctrl.$parsers[i](modelValue);
+        if (isUndefined(modelValue)) {
+          parserValid = false;
+          break;
+        }
+      }
+    }
+    if (isNumber(ctrl.$modelValue) && isNaN(ctrl.$modelValue)) {
+      // ctrl.$modelValue has not been touched yet...
+      ctrl.$modelValue = ngModelGet($scope);
+    }
+    var prevModelValue = ctrl.$modelValue;
+    var allowInvalid = ctrl.$options && ctrl.$options.allowInvalid;
+    ctrl.$$rawModelValue = modelValue;
+
+    if (allowInvalid) {
+      ctrl.$modelValue = modelValue;
+      writeToModelIfNeeded();
+    }
+
+    // Pass the $$lastCommittedViewValue here, because the cached viewValue might be out of date.
+    // This can happen if e.g. $setViewValue is called from inside a parser
+    ctrl.$$runValidators(modelValue, ctrl.$$lastCommittedViewValue, function(allValid) {
+      if (!allowInvalid) {
+        // Note: Don't check ctrl.$valid here, as we could have
+        // external validators (e.g. calculated on the server),
+        // that just call $setValidity and need the model value
+        // to calculate their validity.
+        ctrl.$modelValue = allValid ? modelValue : undefined;
+        writeToModelIfNeeded();
+      }
+    });
+
+    function writeToModelIfNeeded() {
+      if (ctrl.$modelValue !== prevModelValue) {
+        ctrl.$$writeModelToScope();
+      }
+    }
+  };
+
+  this.$$writeModelToScope = function() {
+    ngModelSet($scope, ctrl.$modelValue);
+    forEach(ctrl.$viewChangeListeners, function(listener) {
+      try {
+        listener();
+      } catch (e) {
+        $exceptionHandler(e);
+      }
+    });
+  };
+
+  /**
+   * @ngdoc method
+   * @name ngModel.NgModelController#$setViewValue
+   *
+   * @description
+   * Update the view value.
+   *
+   * This method should be called when an input directive want to change the view value; typically,
+   * this is done from within a DOM event handler.
+   *
+   * For example {@link ng.directive:input input} calls it when the value of the input changes and
+   * {@link ng.directive:select select} calls it when an option is selected.
+   *
+   * If the new `value` is an object (rather than a string or a number), we should make a copy of the
+   * object before passing it to `$setViewValue`.  This is because `ngModel` does not perform a deep
+   * watch of objects, it only looks for a change of identity. If you only change the property of
+   * the object then ngModel will not realise that the object has changed and will not invoke the
+   * `$parsers` and `$validators` pipelines.
+   *
+   * For this reason, you should not change properties of the copy once it has been passed to
+   * `$setViewValue`. Otherwise you may cause the model value on the scope to change incorrectly.
+   *
+   * When this method is called, the new `value` will be staged for committing through the `$parsers`
+   * and `$validators` pipelines. If there are no special {@link ngModelOptions} specified then the staged
+   * value sent directly for processing, finally to be applied to `$modelValue` and then the
+   * **expression** specified in the `ng-model` attribute.
+   *
+   * Lastly, all the registered change listeners, in the `$viewChangeListeners` list, are called.
+   *
+   * In case the {@link ng.directive:ngModelOptions ngModelOptions} directive is used with `updateOn`
+   * and the `default` trigger is not listed, all those actions will remain pending until one of the
+   * `updateOn` events is triggered on the DOM element.
+   * All these actions will be debounced if the {@link ng.directive:ngModelOptions ngModelOptions}
+   * directive is used with a custom debounce for this particular event.
+   *
+   * Note that calling this function does not trigger a `$digest`.
+   *
+   * @param {string} value Value from the view.
+   * @param {string} trigger Event that triggered the update.
+   */
+  this.$setViewValue = function(value, trigger) {
+    ctrl.$viewValue = value;
+    if (!ctrl.$options || ctrl.$options.updateOnDefault) {
+      ctrl.$$debounceViewValueCommit(trigger);
+    }
+  };
+
+  this.$$debounceViewValueCommit = function(trigger) {
+    var debounceDelay = 0,
+        options = ctrl.$options,
+        debounce;
+
+    if (options && isDefined(options.debounce)) {
+      debounce = options.debounce;
+      if (isNumber(debounce)) {
+        debounceDelay = debounce;
+      } else if (isNumber(debounce[trigger])) {
+        debounceDelay = debounce[trigger];
+      } else if (isNumber(debounce['default'])) {
+        debounceDelay = debounce['default'];
+      }
+    }
+
+    $timeout.cancel(pendingDebounce);
+    if (debounceDelay) {
+      pendingDebounce = $timeout(function() {
+        ctrl.$commitViewValue();
+      }, debounceDelay);
+    } else if ($rootScope.$$phase) {
+      ctrl.$commitViewValue();
+    } else {
+      $scope.$apply(function() {
+        ctrl.$commitViewValue();
+      });
+    }
+  };
+
+  // model -> value
+  // Note: we cannot use a normal scope.$watch as we want to detect the following:
+  // 1. scope value is 'a'
+  // 2. user enters 'b'
+  // 3. ng-change kicks in and reverts scope value to 'a'
+  //    -> scope value did not change since the last digest as
+  //       ng-change executes in apply phase
+  // 4. view should be changed back to 'a'
+  $scope.$watch(function ngModelWatch() {
+    var modelValue = ngModelGet($scope);
+
+    // if scope model value and ngModel value are out of sync
+    // TODO(perf): why not move this to the action fn?
+    if (modelValue !== ctrl.$modelValue &&
+       // checks for NaN is needed to allow setting the model to NaN when there's an asyncValidator
+       (ctrl.$modelValue === ctrl.$modelValue || modelValue === modelValue)
+    ) {
+      ctrl.$modelValue = ctrl.$$rawModelValue = modelValue;
+      parserValid = undefined;
+
+      var formatters = ctrl.$formatters,
+          idx = formatters.length;
+
+      var viewValue = modelValue;
+      while (idx--) {
+        viewValue = formatters[idx](viewValue);
+      }
+      if (ctrl.$viewValue !== viewValue) {
+        ctrl.$viewValue = ctrl.$$lastCommittedViewValue = viewValue;
+        ctrl.$render();
+
+        ctrl.$$runValidators(modelValue, viewValue, noop);
+      }
+    }
+
+    return modelValue;
+  });
+}];
+
+
+/**
+ * @ngdoc directive
+ * @name ngModel
+ *
+ * @element input
+ * @priority 1
+ *
+ * @description
+ * The `ngModel` directive binds an `input`,`select`, `textarea` (or custom form control) to a
+ * property on the scope using {@link ngModel.NgModelController NgModelController},
+ * which is created and exposed by this directive.
+ *
+ * `ngModel` is responsible for:
+ *
+ * - Binding the view into the model, which other directives such as `input`, `textarea` or `select`
+ *   require.
+ * - Providing validation behavior (i.e. required, number, email, url).
+ * - Keeping the state of the control (valid/invalid, dirty/pristine, touched/untouched, validation errors).
+ * - Setting related css classes on the element (`ng-valid`, `ng-invalid`, `ng-dirty`, `ng-pristine`, `ng-touched`, `ng-untouched`) including animations.
+ * - Registering the control with its parent {@link ng.directive:form form}.
+ *
+ * Note: `ngModel` will try to bind to the property given by evaluating the expression on the
+ * current scope. If the property doesn't already exist on this scope, it will be created
+ * implicitly and added to the scope.
+ *
+ * For best practices on using `ngModel`, see:
+ *
+ *  - [Understanding Scopes](https://github.com/angular/angular.js/wiki/Understanding-Scopes)
+ *
+ * For basic examples, how to use `ngModel`, see:
+ *
+ *  - {@link ng.directive:input input}
+ *    - {@link input[text] text}
+ *    - {@link input[checkbox] checkbox}
+ *    - {@link input[radio] radio}
+ *    - {@link input[number] number}
+ *    - {@link input[email] email}
+ *    - {@link input[url] url}
+ *    - {@link input[date] date}
+ *    - {@link input[datetime-local] datetime-local}
+ *    - {@link input[time] time}
+ *    - {@link input[month] month}
+ *    - {@link input[week] week}
+ *  - {@link ng.directive:select select}
+ *  - {@link ng.directive:textarea textarea}
+ *
+ * # CSS classes
+ * The following CSS classes are added and removed on the associated input/select/textarea element
+ * depending on the validity of the model.
+ *
+ *  - `ng-valid`: the model is valid
+ *  - `ng-invalid`: the model is invalid
+ *  - `ng-valid-[key]`: for each valid key added by `$setValidity`
+ *  - `ng-invalid-[key]`: for each invalid key added by `$setValidity`
+ *  - `ng-pristine`: the control hasn't been interacted with yet
+ *  - `ng-dirty`: the control has been interacted with
+ *  - `ng-touched`: the control has been blurred
+ *  - `ng-untouched`: the control hasn't been blurred
+ *  - `ng-pending`: any `$asyncValidators` are unfulfilled
+ *
+ * Keep in mind that ngAnimate can detect each of these classes when added and removed.
+ *
+ * ## Animation Hooks
+ *
+ * Animations within models are triggered when any of the associated CSS classes are added and removed
+ * on the input element which is attached to the model. These classes are: `.ng-pristine`, `.ng-dirty`,
+ * `.ng-invalid` and `.ng-valid` as well as any other validations that are performed on the model itself.
+ * The animations that are triggered within ngModel are similar to how they work in ngClass and
+ * animations can be hooked into using CSS transitions, keyframes as well as JS animations.
+ *
+ * The following example shows a simple way to utilize CSS transitions to style an input element
+ * that has been rendered as invalid after it has been validated:
+ *
+ * <pre>
+ * //be sure to include ngAnimate as a module to hook into more
+ * //advanced animations
+ * .my-input {
+ *   transition:0.5s linear all;
+ *   background: white;
+ * }
+ * .my-input.ng-invalid {
+ *   background: red;
+ *   color:white;
+ * }
+ * </pre>
+ *
+ * @example
+ * <example deps="angular-animate.js" animations="true" fixBase="true" module="inputExample">
+     <file name="index.html">
+       <script>
+        angular.module('inputExample', [])
+          .controller('ExampleController', ['$scope', function($scope) {
+            $scope.val = '1';
+          }]);
+       </script>
+       <style>
+         .my-input {
+           -webkit-transition:all linear 0.5s;
+           transition:all linear 0.5s;
+           background: transparent;
+         }
+         .my-input.ng-invalid {
+           color:white;
+           background: red;
+         }
+       </style>
+       Update input to see transitions when valid/invalid.
+       Integer is a valid value.
+       <form name="testForm" ng-controller="ExampleController">
+         <input ng-model="val" ng-pattern="/^\d+$/" name="anim" class="my-input" />
+       </form>
+     </file>
+ * </example>
+ *
+ * ## Binding to a getter/setter
+ *
+ * Sometimes it's helpful to bind `ngModel` to a getter/setter function.  A getter/setter is a
+ * function that returns a representation of the model when called with zero arguments, and sets
+ * the internal state of a model when called with an argument. It's sometimes useful to use this
+ * for models that have an internal representation that's different than what the model exposes
+ * to the view.
+ *
+ * <div class="alert alert-success">
+ * **Best Practice:** It's best to keep getters fast because Angular is likely to call them more
+ * frequently than other parts of your code.
+ * </div>
+ *
+ * You use this behavior by adding `ng-model-options="{ getterSetter: true }"` to an element that
+ * has `ng-model` attached to it. You can also add `ng-model-options="{ getterSetter: true }"` to
+ * a `<form>`, which will enable this behavior for all `<input>`s within it. See
+ * {@link ng.directive:ngModelOptions `ngModelOptions`} for more.
+ *
+ * The following example shows how to use `ngModel` with a getter/setter:
+ *
+ * @example
+ * <example name="ngModel-getter-setter" module="getterSetterExample">
+     <file name="index.html">
+       <div ng-controller="ExampleController">
+         <form name="userForm">
+           Name:
+           <input type="text" name="userName"
+                  ng-model="user.name"
+                  ng-model-options="{ getterSetter: true }" />
+         </form>
+         <pre>user.name = <span ng-bind="user.name()"></span></pre>
+       </div>
+     </file>
+     <file name="app.js">
+       angular.module('getterSetterExample', [])
+         .controller('ExampleController', ['$scope', function($scope) {
+           var _name = 'Brian';
+           $scope.user = {
+             name: function(newName) {
+              // Note that newName can be undefined for two reasons:
+              // 1. Because it is called as a getter and thus called with no arguments
+              // 2. Because the property should actually be set to undefined. This happens e.g. if the
+              //    input is invalid
+              return arguments.length ? (_name = newName) : _name;
+             }
+           };
+         }]);
+     </file>
+ * </example>
+ */
+var ngModelDirective = ['$rootScope', function($rootScope) {
+  return {
+    restrict: 'A',
+    require: ['ngModel', '^?form', '^?ngModelOptions'],
+    controller: NgModelController,
+    // Prelink needs to run before any input directive
+    // so that we can set the NgModelOptions in NgModelController
+    // before anyone else uses it.
+    priority: 1,
+    compile: function ngModelCompile(element) {
+      // Setup initial state of the control
+      element.addClass(PRISTINE_CLASS).addClass(UNTOUCHED_CLASS).addClass(VALID_CLASS);
+
+      return {
+        pre: function ngModelPreLink(scope, element, attr, ctrls) {
+          var modelCtrl = ctrls[0],
+              formCtrl = ctrls[1] || nullFormCtrl;
+
+          modelCtrl.$$setOptions(ctrls[2] && ctrls[2].$options);
+
+          // notify others, especially parent forms
+          formCtrl.$addControl(modelCtrl);
+
+          attr.$observe('name', function(newValue) {
+            if (modelCtrl.$name !== newValue) {
+              formCtrl.$$renameControl(modelCtrl, newValue);
+            }
+          });
+
+          scope.$on('$destroy', function() {
+            formCtrl.$removeControl(modelCtrl);
+          });
+        },
+        post: function ngModelPostLink(scope, element, attr, ctrls) {
+          var modelCtrl = ctrls[0];
+          if (modelCtrl.$options && modelCtrl.$options.updateOn) {
+            element.on(modelCtrl.$options.updateOn, function(ev) {
+              modelCtrl.$$debounceViewValueCommit(ev && ev.type);
+            });
+          }
+
+          element.on('blur', function(ev) {
+            if (modelCtrl.$touched) return;
+
+            if ($rootScope.$$phase) {
+              scope.$evalAsync(modelCtrl.$setTouched);
+            } else {
+              scope.$apply(modelCtrl.$setTouched);
+            }
+          });
+        }
+      };
+    }
+  };
+}];
+
+var DEFAULT_REGEXP = /(\s+|^)default(\s+|$)/;
+
+/**
+ * @ngdoc directive
+ * @name ngModelOptions
+ *
+ * @description
+ * Allows tuning how model updates are done. Using `ngModelOptions` you can specify a custom list of
+ * events that will trigger a model update and/or a debouncing delay so that the actual update only
+ * takes place when a timer expires; this timer will be reset after another change takes place.
+ *
+ * Given the nature of `ngModelOptions`, the value displayed inside input fields in the view might
+ * be different than the value in the actual model. This means that if you update the model you
+ * should also invoke {@link ngModel.NgModelController `$rollbackViewValue`} on the relevant input field in
+ * order to make sure it is synchronized with the model and that any debounced action is canceled.
+ *
+ * The easiest way to reference the control's {@link ngModel.NgModelController `$rollbackViewValue`}
+ * method is by making sure the input is placed inside a form that has a `name` attribute. This is
+ * important because `form` controllers are published to the related scope under the name in their
+ * `name` attribute.
+ *
+ * Any pending changes will take place immediately when an enclosing form is submitted via the
+ * `submit` event. Note that `ngClick` events will occur before the model is updated. Use `ngSubmit`
+ * to have access to the updated model.
+ *
+ * `ngModelOptions` has an effect on the element it's declared on and its descendants.
+ *
+ * @param {Object} ngModelOptions options to apply to the current model. Valid keys are:
+ *   - `updateOn`: string specifying which event should the input be bound to. You can set several
+ *     events using an space delimited list. There is a special event called `default` that
+ *     matches the default events belonging of the control.
+ *   - `debounce`: integer value which contains the debounce model update value in milliseconds. A
+ *     value of 0 triggers an immediate update. If an object is supplied instead, you can specify a
+ *     custom value for each event. For example:
+ *     `ng-model-options="{ updateOn: 'default blur', debounce: {'default': 500, 'blur': 0} }"`
+ *   - `allowInvalid`: boolean value which indicates that the model can be set with values that did
+ *     not validate correctly instead of the default behavior of setting the model to undefined.
+ *   - `getterSetter`: boolean value which determines whether or not to treat functions bound to
+       `ngModel` as getters/setters.
+ *   - `timezone`: Defines the timezone to be used to read/write the `Date` instance in the model for
+ *     `<input type="date">`, `<input type="time">`, ... . Right now, the only supported value is `'UTC'`,
+ *     otherwise the default timezone of the browser will be used.
+ *
+ * @example
+
+  The following example shows how to override immediate updates. Changes on the inputs within the
+  form will update the model only when the control loses focus (blur event). If `escape` key is
+  pressed while the input field is focused, the value is reset to the value in the current model.
+
+  <example name="ngModelOptions-directive-blur" module="optionsExample">
+    <file name="index.html">
+      <div ng-controller="ExampleController">
+        <form name="userForm">
+          Name:
+          <input type="text" name="userName"
+                 ng-model="user.name"
+                 ng-model-options="{ updateOn: 'blur' }"
+                 ng-keyup="cancel($event)" /><br />
+
+          Other data:
+          <input type="text" ng-model="user.data" /><br />
+        </form>
+        <pre>user.name = <span ng-bind="user.name"></span></pre>
+      </div>
+    </file>
+    <file name="app.js">
+      angular.module('optionsExample', [])
+        .controller('ExampleController', ['$scope', function($scope) {
+          $scope.user = { name: 'say', data: '' };
+
+          $scope.cancel = function(e) {
+            if (e.keyCode == 27) {
+              $scope.userForm.userName.$rollbackViewValue();
+            }
+          };
+        }]);
+    </file>
+    <file name="protractor.js" type="protractor">
+      var model = element(by.binding('user.name'));
+      var input = element(by.model('user.name'));
+      var other = element(by.model('user.data'));
+
+      it('should allow custom events', function() {
+        input.sendKeys(' hello');
+        input.click();
+        expect(model.getText()).toEqual('say');
+        other.click();
+        expect(model.getText()).toEqual('say hello');
+      });
+
+      it('should $rollbackViewValue when model changes', function() {
+        input.sendKeys(' hello');
+        expect(input.getAttribute('value')).toEqual('say hello');
+        input.sendKeys(protractor.Key.ESCAPE);
+        expect(input.getAttribute('value')).toEqual('say');
+        other.click();
+        expect(model.getText()).toEqual('say');
+      });
+    </file>
+  </example>
+
+  This one shows how to debounce model changes. Model will be updated only 1 sec after last change.
+  If the `Clear` button is pressed, any debounced action is canceled and the value becomes empty.
+
+  <example name="ngModelOptions-directive-debounce" module="optionsExample">
+    <file name="index.html">
+      <div ng-controller="ExampleController">
+        <form name="userForm">
+          Name:
+          <input type="text" name="userName"
+                 ng-model="user.name"
+                 ng-model-options="{ debounce: 1000 }" />
+          <button ng-click="userForm.userName.$rollbackViewValue(); user.name=''">Clear</button><br />
+        </form>
+        <pre>user.name = <span ng-bind="user.name"></span></pre>
+      </div>
+    </file>
+    <file name="app.js">
+      angular.module('optionsExample', [])
+        .controller('ExampleController', ['$scope', function($scope) {
+          $scope.user = { name: 'say' };
+        }]);
+    </file>
+  </example>
+
+  This one shows how to bind to getter/setters:
+
+  <example name="ngModelOptions-directive-getter-setter" module="getterSetterExample">
+    <file name="index.html">
+      <div ng-controller="ExampleController">
+        <form name="userForm">
+          Name:
+          <input type="text" name="userName"
+                 ng-model="user.name"
+                 ng-model-options="{ getterSetter: true }" />
+        </form>
+        <pre>user.name = <span ng-bind="user.name()"></span></pre>
+      </div>
+    </file>
+    <file name="app.js">
+      angular.module('getterSetterExample', [])
+        .controller('ExampleController', ['$scope', function($scope) {
+          var _name = 'Brian';
+          $scope.user = {
+            name: function(newName) {
+              // Note that newName can be undefined for two reasons:
+              // 1. Because it is called as a getter and thus called with no arguments
+              // 2. Because the property should actually be set to undefined. This happens e.g. if the
+              //    input is invalid
+              return arguments.length ? (_name = newName) : _name;
+            }
+          };
+        }]);
+    </file>
+  </example>
+ */
+var ngModelOptionsDirective = function() {
+  return {
+    restrict: 'A',
+    controller: ['$scope', '$attrs', function($scope, $attrs) {
+      var that = this;
+      this.$options = $scope.$eval($attrs.ngModelOptions);
+      // Allow adding/overriding bound events
+      if (this.$options.updateOn !== undefined) {
+        this.$options.updateOnDefault = false;
+        // extract "default" pseudo-event from list of events that can trigger a model update
+        this.$options.updateOn = trim(this.$options.updateOn.replace(DEFAULT_REGEXP, function() {
+          that.$options.updateOnDefault = true;
+          return ' ';
+        }));
+      } else {
+        this.$options.updateOnDefault = true;
+      }
+    }]
+  };
+};
+
+
+
+// helper methods
+function addSetValidityMethod(context) {
+  var ctrl = context.ctrl,
+      $element = context.$element,
+      classCache = {},
+      set = context.set,
+      unset = context.unset,
+      parentForm = context.parentForm,
+      $animate = context.$animate;
+
+  classCache[INVALID_CLASS] = !(classCache[VALID_CLASS] = $element.hasClass(VALID_CLASS));
+
+  ctrl.$setValidity = setValidity;
+
+  function setValidity(validationErrorKey, state, controller) {
+    if (state === undefined) {
+      createAndSet('$pending', validationErrorKey, controller);
+    } else {
+      unsetAndCleanup('$pending', validationErrorKey, controller);
+    }
+    if (!isBoolean(state)) {
+      unset(ctrl.$error, validationErrorKey, controller);
+      unset(ctrl.$$success, validationErrorKey, controller);
+    } else {
+      if (state) {
+        unset(ctrl.$error, validationErrorKey, controller);
+        set(ctrl.$$success, validationErrorKey, controller);
+      } else {
+        set(ctrl.$error, validationErrorKey, controller);
+        unset(ctrl.$$success, validationErrorKey, controller);
+      }
+    }
+    if (ctrl.$pending) {
+      cachedToggleClass(PENDING_CLASS, true);
+      ctrl.$valid = ctrl.$invalid = undefined;
+      toggleValidationCss('', null);
+    } else {
+      cachedToggleClass(PENDING_CLASS, false);
+      ctrl.$valid = isObjectEmpty(ctrl.$error);
+      ctrl.$invalid = !ctrl.$valid;
+      toggleValidationCss('', ctrl.$valid);
+    }
+
+    // re-read the state as the set/unset methods could have
+    // combined state in ctrl.$error[validationError] (used for forms),
+    // where setting/unsetting only increments/decrements the value,
+    // and does not replace it.
+    var combinedState;
+    if (ctrl.$pending && ctrl.$pending[validationErrorKey]) {
+      combinedState = undefined;
+    } else if (ctrl.$error[validationErrorKey]) {
+      combinedState = false;
+    } else if (ctrl.$$success[validationErrorKey]) {
+      combinedState = true;
+    } else {
+      combinedState = null;
+    }
+
+    toggleValidationCss(validationErrorKey, combinedState);
+    parentForm.$setValidity(validationErrorKey, combinedState, ctrl);
+  }
+
+  function createAndSet(name, value, controller) {
+    if (!ctrl[name]) {
+      ctrl[name] = {};
+    }
+    set(ctrl[name], value, controller);
+  }
+
+  function unsetAndCleanup(name, value, controller) {
+    if (ctrl[name]) {
+      unset(ctrl[name], value, controller);
+    }
+    if (isObjectEmpty(ctrl[name])) {
+      ctrl[name] = undefined;
+    }
+  }
+
+  function cachedToggleClass(className, switchValue) {
+    if (switchValue && !classCache[className]) {
+      $animate.addClass($element, className);
+      classCache[className] = true;
+    } else if (!switchValue && classCache[className]) {
+      $animate.removeClass($element, className);
+      classCache[className] = false;
+    }
+  }
+
+  function toggleValidationCss(validationErrorKey, isValid) {
+    validationErrorKey = validationErrorKey ? '-' + snake_case(validationErrorKey, '-') : '';
+
+    cachedToggleClass(VALID_CLASS + validationErrorKey, isValid === true);
+    cachedToggleClass(INVALID_CLASS + validationErrorKey, isValid === false);
+  }
+}
+
+function isObjectEmpty(obj) {
+  if (obj) {
+    for (var prop in obj) {
+      return false;
+    }
+  }
+  return true;
+}
+
+/**
+ * @ngdoc directive
+ * @name ngNonBindable
+ * @restrict AC
+ * @priority 1000
+ *
+ * @description
+ * The `ngNonBindable` directive tells Angular not to compile or bind the contents of the current
+ * DOM element. This is useful if the element contains what appears to be Angular directives and
+ * bindings but which should be ignored by Angular. This could be the case if you have a site that
+ * displays snippets of code, for instance.
+ *
+ * @element ANY
+ *
+ * @example
+ * In this example there are two locations where a simple interpolation binding (`{{}}`) is present,
+ * but the one wrapped in `ngNonBindable` is left alone.
+ *
+ * @example
+    <example>
+      <file name="index.html">
+        <div>Normal: {{1 + 2}}</div>
+        <div ng-non-bindable>Ignored: {{1 + 2}}</div>
+      </file>
+      <file name="protractor.js" type="protractor">
+       it('should check ng-non-bindable', function() {
+         expect(element(by.binding('1 + 2')).getText()).toContain('3');
+         expect(element.all(by.css('div')).last().getText()).toMatch(/1 \+ 2/);
+       });
+      </file>
+    </example>
+ */
+var ngNonBindableDirective = ngDirective({ terminal: true, priority: 1000 });
+
+/**
+ * @ngdoc directive
+ * @name ngPluralize
+ * @restrict EA
+ *
+ * @description
+ * `ngPluralize` is a directive that displays messages according to en-US localization rules.
+ * These rules are bundled with angular.js, but can be overridden
+ * (see {@link guide/i18n Angular i18n} dev guide). You configure ngPluralize directive
+ * by specifying the mappings between
+ * [plural categories](http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/language_plural_rules.html)
+ * and the strings to be displayed.
+ *
+ * # Plural categories and explicit number rules
+ * There are two
+ * [plural categories](http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/language_plural_rules.html)
+ * in Angular's default en-US locale: "one" and "other".
+ *
+ * While a plural category may match many numbers (for example, in en-US locale, "other" can match
+ * any number that is not 1), an explicit number rule can only match one number. For example, the
+ * explicit number rule for "3" matches the number 3. There are examples of plural categories
+ * and explicit number rules throughout the rest of this documentation.
+ *
+ * # Configuring ngPluralize
+ * You configure ngPluralize by providing 2 attributes: `count` and `when`.
+ * You can also provide an optional attribute, `offset`.
+ *
+ * The value of the `count` attribute can be either a string or an {@link guide/expression
+ * Angular expression}; these are evaluated on the current scope for its bound value.
+ *
+ * The `when` attribute specifies the mappings between plural categories and the actual
+ * string to be displayed. The value of the attribute should be a JSON object.
+ *
+ * The following example shows how to configure ngPluralize:
+ *
+ * ```html
+ * <ng-pluralize count="personCount"
+                 when="{'0': 'Nobody is viewing.',
+ *                      'one': '1 person is viewing.',
+ *                      'other': '{} people are viewing.'}">
+ * </ng-pluralize>
+ *```
+ *
+ * In the example, `"0: Nobody is viewing."` is an explicit number rule. If you did not
+ * specify this rule, 0 would be matched to the "other" category and "0 people are viewing"
+ * would be shown instead of "Nobody is viewing". You can specify an explicit number rule for
+ * other numbers, for example 12, so that instead of showing "12 people are viewing", you can
+ * show "a dozen people are viewing".
+ *
+ * You can use a set of closed braces (`{}`) as a placeholder for the number that you want substituted
+ * into pluralized strings. In the previous example, Angular will replace `{}` with
+ * <span ng-non-bindable>`{{personCount}}`</span>. The closed braces `{}` is a placeholder
+ * for <span ng-non-bindable>{{numberExpression}}</span>.
+ *
+ * # Configuring ngPluralize with offset
+ * The `offset` attribute allows further customization of pluralized text, which can result in
+ * a better user experience. For example, instead of the message "4 people are viewing this document",
+ * you might display "John, Kate and 2 others are viewing this document".
+ * The offset attribute allows you to offset a number by any desired value.
+ * Let's take a look at an example:
+ *
+ * ```html
+ * <ng-pluralize count="personCount" offset=2
+ *               when="{'0': 'Nobody is viewing.',
+ *                      '1': '{{person1}} is viewing.',
+ *                      '2': '{{person1}} and {{person2}} are viewing.',
+ *                      'one': '{{person1}}, {{person2}} and one other person are viewing.',
+ *                      'other': '{{person1}}, {{person2}} and {} other people are viewing.'}">
+ * </ng-pluralize>
+ * ```
+ *
+ * Notice that we are still using two plural categories(one, other), but we added
+ * three explicit number rules 0, 1 and 2.
+ * When one person, perhaps John, views the document, "John is viewing" will be shown.
+ * When three people view the document, no explicit number rule is found, so
+ * an offset of 2 is taken off 3, and Angular uses 1 to decide the plural category.
+ * In this case, plural category 'one' is matched and "John, Mary and one other person are viewing"
+ * is shown.
+ *
+ * Note that when you specify offsets, you must provide explicit number rules for
+ * numbers from 0 up to and including the offset. If you use an offset of 3, for example,
+ * you must provide explicit number rules for 0, 1, 2 and 3. You must also provide plural strings for
+ * plural categories "one" and "other".
+ *
+ * @param {string|expression} count The variable to be bound to.
+ * @param {string} when The mapping between plural category to its corresponding strings.
+ * @param {number=} offset Offset to deduct from the total number.
+ *
+ * @example
+    <example module="pluralizeExample">
+      <file name="index.html">
+        <script>
+          angular.module('pluralizeExample', [])
+            .controller('ExampleController', ['$scope', function($scope) {
+              $scope.person1 = 'Igor';
+              $scope.person2 = 'Misko';
+              $scope.personCount = 1;
+            }]);
+        </script>
+        <div ng-controller="ExampleController">
+          Person 1:<input type="text" ng-model="person1" value="Igor" /><br/>
+          Person 2:<input type="text" ng-model="person2" value="Misko" /><br/>
+          Number of People:<input type="text" ng-model="personCount" value="1" /><br/>
+
+          <!--- Example with simple pluralization rules for en locale --->
+          Without Offset:
+          <ng-pluralize count="personCount"
+                        when="{'0': 'Nobody is viewing.',
+                               'one': '1 person is viewing.',
+                               'other': '{} people are viewing.'}">
+          </ng-pluralize><br>
+
+          <!--- Example with offset --->
+          With Offset(2):
+          <ng-pluralize count="personCount" offset=2
+                        when="{'0': 'Nobody is viewing.',
+                               '1': '{{person1}} is viewing.',
+                               '2': '{{person1}} and {{person2}} are viewing.',
+                               'one': '{{person1}}, {{person2}} and one other person are viewing.',
+                               'other': '{{person1}}, {{person2}} and {} other people are viewing.'}">
+          </ng-pluralize>
+        </div>
+      </file>
+      <file name="protractor.js" type="protractor">
+        it('should show correct pluralized string', function() {
+          var withoutOffset = element.all(by.css('ng-pluralize')).get(0);
+          var withOffset = element.all(by.css('ng-pluralize')).get(1);
+          var countInput = element(by.model('personCount'));
+
+          expect(withoutOffset.getText()).toEqual('1 person is viewing.');
+          expect(withOffset.getText()).toEqual('Igor is viewing.');
+
+          countInput.clear();
+          countInput.sendKeys('0');
+
+          expect(withoutOffset.getText()).toEqual('Nobody is viewing.');
+          expect(withOffset.getText()).toEqual('Nobody is viewing.');
+
+          countInput.clear();
+          countInput.sendKeys('2');
+
+          expect(withoutOffset.getText()).toEqual('2 people are viewing.');
+          expect(withOffset.getText()).toEqual('Igor and Misko are viewing.');
+
+          countInput.clear();
+          countInput.sendKeys('3');
+
+          expect(withoutOffset.getText()).toEqual('3 people are viewing.');
+          expect(withOffset.getText()).toEqual('Igor, Misko and one other person are viewing.');
+
+          countInput.clear();
+          countInput.sendKeys('4');
+
+          expect(withoutOffset.getText()).toEqual('4 people are viewing.');
+          expect(withOffset.getText()).toEqual('Igor, Misko and 2 other people are viewing.');
+        });
+        it('should show data-bound names', function() {
+          var withOffset = element.all(by.css('ng-pluralize')).get(1);
+          var personCount = element(by.model('personCount'));
+          var person1 = element(by.model('person1'));
+          var person2 = element(by.model('person2'));
+          personCount.clear();
+          personCount.sendKeys('4');
+          person1.clear();
+          person1.sendKeys('Di');
+          person2.clear();
+          person2.sendKeys('Vojta');
+          expect(withOffset.getText()).toEqual('Di, Vojta and 2 other people are viewing.');
+        });
+      </file>
+    </example>
+ */
+var ngPluralizeDirective = ['$locale', '$interpolate', function($locale, $interpolate) {
+  var BRACE = /{}/g,
+      IS_WHEN = /^when(Minus)?(.+)$/;
+
+  return {
+    restrict: 'EA',
+    link: function(scope, element, attr) {
+      var numberExp = attr.count,
+          whenExp = attr.$attr.when && element.attr(attr.$attr.when), // we have {{}} in attrs
+          offset = attr.offset || 0,
+          whens = scope.$eval(whenExp) || {},
+          whensExpFns = {},
+          startSymbol = $interpolate.startSymbol(),
+          endSymbol = $interpolate.endSymbol(),
+          braceReplacement = startSymbol + numberExp + '-' + offset + endSymbol,
+          watchRemover = angular.noop,
+          lastCount;
+
+      forEach(attr, function(expression, attributeName) {
+        var tmpMatch = IS_WHEN.exec(attributeName);
+        if (tmpMatch) {
+          var whenKey = (tmpMatch[1] ? '-' : '') + lowercase(tmpMatch[2]);
+          whens[whenKey] = element.attr(attr.$attr[attributeName]);
+        }
+      });
+      forEach(whens, function(expression, key) {
+        whensExpFns[key] = $interpolate(expression.replace(BRACE, braceReplacement));
+
+      });
+
+      scope.$watch(numberExp, function ngPluralizeWatchAction(newVal) {
+        var count = parseFloat(newVal);
+        var countIsNaN = isNaN(count);
+
+        if (!countIsNaN && !(count in whens)) {
+          // If an explicit number rule such as 1, 2, 3... is defined, just use it.
+          // Otherwise, check it against pluralization rules in $locale service.
+          count = $locale.pluralCat(count - offset);
+        }
+
+        // If both `count` and `lastCount` are NaN, we don't need to re-register a watch.
+        // In JS `NaN !== NaN`, so we have to exlicitly check.
+        if ((count !== lastCount) && !(countIsNaN && isNaN(lastCount))) {
+          watchRemover();
+          watchRemover = scope.$watch(whensExpFns[count], updateElementText);
+          lastCount = count;
+        }
+      });
+
+      function updateElementText(newText) {
+        element.text(newText || '');
+      }
+    }
+  };
+}];
+
+/**
+ * @ngdoc directive
+ * @name ngRepeat
+ *
+ * @description
+ * The `ngRepeat` directive instantiates a template once per item from a collection. Each template
+ * instance gets its own scope, where the given loop variable is set to the current collection item,
+ * and `$index` is set to the item index or key.
+ *
+ * Special properties are exposed on the local scope of each template instance, including:
+ *
+ * | Variable  | Type            | Details                                                                     |
+ * |-----------|-----------------|-----------------------------------------------------------------------------|
+ * | `$index`  | {@type number}  | iterator offset of the repeated element (0..length-1)                       |
+ * | `$first`  | {@type boolean} | true if the repeated element is first in the iterator.                      |
+ * | `$middle` | {@type boolean} | true if the repeated element is between the first and last in the iterator. |
+ * | `$last`   | {@type boolean} | true if the repeated element is last in the iterator.                       |
+ * | `$even`   | {@type boolean} | true if the iterator position `$index` is even (otherwise false).           |
+ * | `$odd`    | {@type boolean} | true if the iterator position `$index` is odd (otherwise false).            |
+ *
+ * Creating aliases for these properties is possible with {@link ng.directive:ngInit `ngInit`}.
+ * This may be useful when, for instance, nesting ngRepeats.
+ *
+ * # Iterating over object properties
+ *
+ * It is possible to get `ngRepeat` to iterate over the properties of an object using the following
+ * syntax:
+ *
+ * ```js
+ * <div ng-repeat="(key, value) in myObj"> ... </div>
+ * ```
+ *
+ * You need to be aware that the JavaScript specification does not define what order
+ * it will return the keys for an object. In order to have a guaranteed deterministic order
+ * for the keys, Angular versions up to and including 1.3 **sort the keys alphabetically**.
+ *
+ * If this is not desired, the recommended workaround is to convert your object into an array
+ * that is sorted into the order that you prefer before providing it to `ngRepeat`.  You could
+ * do this with a filter such as [toArrayFilter](http://ngmodules.org/modules/angular-toArrayFilter)
+ * or implement a `$watch` on the object yourself.
+ *
+ * In version 1.4 we will remove the sorting, since it seems that browsers generally follow the
+ * strategy of providing keys in the order in which they were defined, although there are exceptions
+ * when keys are deleted and reinstated.
+ *
+ *
+ * # Tracking and Duplicates
+ *
+ * When the contents of the collection change, `ngRepeat` makes the corresponding changes to the DOM:
+ *
+ * * When an item is added, a new instance of the template is added to the DOM.
+ * * When an item is removed, its template instance is removed from the DOM.
+ * * When items are reordered, their respective templates are reordered in the DOM.
+ *
+ * By default, `ngRepeat` does not allow duplicate items in arrays. This is because when
+ * there are duplicates, it is not possible to maintain a one-to-one mapping between collection
+ * items and DOM elements.
+ *
+ * If you do need to repeat duplicate items, you can substitute the default tracking behavior
+ * with your own using the `track by` expression.
+ *
+ * For example, you may track items by the index of each item in the collection, using the
+ * special scope property `$index`:
+ * ```html
+ *    <div ng-repeat="n in [42, 42, 43, 43] track by $index">
+ *      {{n}}
+ *    </div>
+ * ```
+ *
+ * You may use arbitrary expressions in `track by`, including references to custom functions
+ * on the scope:
+ * ```html
+ *    <div ng-repeat="n in [42, 42, 43, 43] track by myTrackingFunction(n)">
+ *      {{n}}
+ *    </div>
+ * ```
+ *
+ * If you are working with objects that have an identifier property, you can track
+ * by the identifier instead of the whole object. Should you reload your data later, `ngRepeat`
+ * will not have to rebuild the DOM elements for items it has already rendered, even if the
+ * JavaScript objects in the collection have been substituted for new ones:
+ * ```html
+ *    <div ng-repeat="model in collection track by model.id">
+ *      {{model.name}}
+ *    </div>
+ * ```
+ *
+ * When no `track by` expression is provided, it is equivalent to tracking by the built-in
+ * `$id` function, which tracks items by their identity:
+ * ```html
+ *    <div ng-repeat="obj in collection track by $id(obj)">
+ *      {{obj.prop}}
+ *    </div>
+ * ```
+ *
+ * # Special repeat start and end points
+ * To repeat a series of elements instead of just one parent element, ngRepeat (as well as other ng directives) supports extending
+ * the range of the repeater by defining explicit start and end points by using **ng-repeat-start** and **ng-repeat-end** respectively.
+ * The **ng-repeat-start** directive works the same as **ng-repeat**, but will repeat all the HTML code (including the tag it's defined on)
+ * up to and including the ending HTML tag where **ng-repeat-end** is placed.
+ *
+ * The example below makes use of this feature:
+ * ```html
+ *   <header ng-repeat-start="item in items">
+ *     Header {{ item }}
+ *   </header>
+ *   <div class="body">
+ *     Body {{ item }}
+ *   </div>
+ *   <footer ng-repeat-end>
+ *     Footer {{ item }}
+ *   </footer>
+ * ```
+ *
+ * And with an input of {@type ['A','B']} for the items variable in the example above, the output will evaluate to:
+ * ```html
+ *   <header>
+ *     Header A
+ *   </header>
+ *   <div class="body">
+ *     Body A
+ *   </div>
+ *   <footer>
+ *     Footer A
+ *   </footer>
+ *   <header>
+ *     Header B
+ *   </header>
+ *   <div class="body">
+ *     Body B
+ *   </div>
+ *   <footer>
+ *     Footer B
+ *   </footer>
+ * ```
+ *
+ * The custom start and end points for ngRepeat also support all other HTML directive syntax flavors provided in AngularJS (such
+ * as **data-ng-repeat-start**, **x-ng-repeat-start** and **ng:repeat-start**).
+ *
+ * @animations
+ * **.enter** - when a new item is added to the list or when an item is revealed after a filter
+ *
+ * **.leave** - when an item is removed from the list or when an item is filtered out
+ *
+ * **.move** - when an adjacent item is filtered out causing a reorder or when the item contents are reordered
+ *
+ * @element ANY
+ * @scope
+ * @priority 1000
+ * @param {repeat_expression} ngRepeat The expression indicating how to enumerate a collection. These
+ *   formats are currently supported:
+ *
+ *   * `variable in expression` – where variable is the user defined loop variable and `expression`
+ *     is a scope expression giving the collection to enumerate.
+ *
+ *     For example: `album in artist.albums`.
+ *
+ *   * `(key, value) in expression` – where `key` and `value` can be any user defined identifiers,
+ *     and `expression` is the scope expression giving the collection to enumerate.
+ *
+ *     For example: `(name, age) in {'adam':10, 'amalie':12}`.
+ *
+ *   * `variable in expression track by tracking_expression` – You can also provide an optional tracking expression
+ *     which can be used to associate the objects in the collection with the DOM elements. If no tracking expression
+ *     is specified, ng-repeat associates elements by identity. It is an error to have
+ *     more than one tracking expression value resolve to the same key. (This would mean that two distinct objects are
+ *     mapped to the same DOM element, which is not possible.)  If filters are used in the expression, they should be
+ *     applied before the tracking expression.
+ *
+ *     For example: `item in items` is equivalent to `item in items track by $id(item)`. This implies that the DOM elements
+ *     will be associated by item identity in the array.
+ *
+ *     For example: `item in items track by $id(item)`. A built in `$id()` function can be used to assign a unique
+ *     `$$hashKey` property to each item in the array. This property is then used as a key to associated DOM elements
+ *     with the corresponding item in the array by identity. Moving the same object in array would move the DOM
+ *     element in the same way in the DOM.
+ *
+ *     For example: `item in items track by item.id` is a typical pattern when the items come from the database. In this
+ *     case the object identity does not matter. Two objects are considered equivalent as long as their `id`
+ *     property is same.
+ *
+ *     For example: `item in items | filter:searchText track by item.id` is a pattern that might be used to apply a filter
+ *     to items in conjunction with a tracking expression.
+ *
+ *   * `variable in expression as alias_expression` – You can also provide an optional alias expression which will then store the
+ *     intermediate results of the repeater after the filters have been applied. Typically this is used to render a special message
+ *     when a filter is active on the repeater, but the filtered result set is empty.
+ *
+ *     For example: `item in items | filter:x as results` will store the fragment of the repeated items as `results`, but only after
+ *     the items have been processed through the filter.
+ *
+ * @example
+ * This example initializes the scope to a list of names and
+ * then uses `ngRepeat` to display every person:
+  <example module="ngAnimate" deps="angular-animate.js" animations="true">
+    <file name="index.html">
+      <div ng-init="friends = [
+        {name:'John', age:25, gender:'boy'},
+        {name:'Jessie', age:30, gender:'girl'},
+        {name:'Johanna', age:28, gender:'girl'},
+        {name:'Joy', age:15, gender:'girl'},
+        {name:'Mary', age:28, gender:'girl'},
+        {name:'Peter', age:95, gender:'boy'},
+        {name:'Sebastian', age:50, gender:'boy'},
+        {name:'Erika', age:27, gender:'girl'},
+        {name:'Patrick', age:40, gender:'boy'},
+        {name:'Samantha', age:60, gender:'girl'}
+      ]">
+        I have {{friends.length}} friends. They are:
+        <input type="search" ng-model="q" placeholder="filter friends..." />
+        <ul class="example-animate-container">
+          <li class="animate-repeat" ng-repeat="friend in friends | filter:q as results">
+            [{{$index + 1}}] {{friend.name}} who is {{friend.age}} years old.
+          </li>
+          <li class="animate-repeat" ng-if="results.length == 0">
+            <strong>No results found...</strong>
+          </li>
+        </ul>
+      </div>
+    </file>
+    <file name="animations.css">
+      .example-animate-container {
+        background:white;
+        border:1px solid black;
+        list-style:none;
+        margin:0;
+        padding:0 10px;
+      }
+
+      .animate-repeat {
+        line-height:40px;
+        list-style:none;
+        box-sizing:border-box;
+      }
+
+      .animate-repeat.ng-move,
+      .animate-repeat.ng-enter,
+      .animate-repeat.ng-leave {
+        -webkit-transition:all linear 0.5s;
+        transition:all linear 0.5s;
+      }
+
+      .animate-repeat.ng-leave.ng-leave-active,
+      .animate-repeat.ng-move,
+      .animate-repeat.ng-enter {
+        opacity:0;
+        max-height:0;
+      }
+
+      .animate-repeat.ng-leave,
+      .animate-repeat.ng-move.ng-move-active,
+      .animate-repeat.ng-enter.ng-enter-active {
+        opacity:1;
+        max-height:40px;
+      }
+    </file>
+    <file name="protractor.js" type="protractor">
+      var friends = element.all(by.repeater('friend in friends'));
+
+      it('should render initial data set', function() {
+        expect(friends.count()).toBe(10);
+        expect(friends.get(0).getText()).toEqual('[1] John who is 25 years old.');
+        expect(friends.get(1).getText()).toEqual('[2] Jessie who is 30 years old.');
+        expect(friends.last().getText()).toEqual('[10] Samantha who is 60 years old.');
+        expect(element(by.binding('friends.length')).getText())
+            .toMatch("I have 10 friends. They are:");
+      });
+
+       it('should update repeater when filter predicate changes', function() {
+         expect(friends.count()).toBe(10);
+
+         element(by.model('q')).sendKeys('ma');
+
+         expect(friends.count()).toBe(2);
+         expect(friends.get(0).getText()).toEqual('[1] Mary who is 28 years old.');
+         expect(friends.last().getText()).toEqual('[2] Samantha who is 60 years old.');
+       });
+      </file>
+    </example>
+ */
+var ngRepeatDirective = ['$parse', '$animate', function($parse, $animate) {
+  var NG_REMOVED = '$$NG_REMOVED';
+  var ngRepeatMinErr = minErr('ngRepeat');
+
+  var updateScope = function(scope, index, valueIdentifier, value, keyIdentifier, key, arrayLength) {
+    // TODO(perf): generate setters to shave off ~40ms or 1-1.5%
+    scope[valueIdentifier] = value;
+    if (keyIdentifier) scope[keyIdentifier] = key;
+    scope.$index = index;
+    scope.$first = (index === 0);
+    scope.$last = (index === (arrayLength - 1));
+    scope.$middle = !(scope.$first || scope.$last);
+    // jshint bitwise: false
+    scope.$odd = !(scope.$even = (index&1) === 0);
+    // jshint bitwise: true
+  };
+
+  var getBlockStart = function(block) {
+    return block.clone[0];
+  };
+
+  var getBlockEnd = function(block) {
+    return block.clone[block.clone.length - 1];
+  };
+
+
+  return {
+    restrict: 'A',
+    multiElement: true,
+    transclude: 'element',
+    priority: 1000,
+    terminal: true,
+    $$tlb: true,
+    compile: function ngRepeatCompile($element, $attr) {
+      var expression = $attr.ngRepeat;
+      var ngRepeatEndComment = document.createComment(' end ngRepeat: ' + expression + ' ');
+
+      var match = expression.match(/^\s*([\s\S]+?)\s+in\s+([\s\S]+?)(?:\s+as\s+([\s\S]+?))?(?:\s+track\s+by\s+([\s\S]+?))?\s*$/);
+
+      if (!match) {
+        throw ngRepeatMinErr('iexp', "Expected expression in form of '_item_ in _collection_[ track by _id_]' but got '{0}'.",
+            expression);
+      }
+
+      var lhs = match[1];
+      var rhs = match[2];
+      var aliasAs = match[3];
+      var trackByExp = match[4];
+
+      match = lhs.match(/^(?:(\s*[\$\w]+)|\(\s*([\$\w]+)\s*,\s*([\$\w]+)\s*\))$/);
+
+      if (!match) {
+        throw ngRepeatMinErr('iidexp', "'_item_' in '_item_ in _collection_' should be an identifier or '(_key_, _value_)' expression, but got '{0}'.",
+            lhs);
+      }
+      var valueIdentifier = match[3] || match[1];
+      var keyIdentifier = match[2];
+
+      if (aliasAs && (!/^[$a-zA-Z_][$a-zA-Z0-9_]*$/.test(aliasAs) ||
+          /^(null|undefined|this|\$index|\$first|\$middle|\$last|\$even|\$odd|\$parent|\$root|\$id)$/.test(aliasAs))) {
+        throw ngRepeatMinErr('badident', "alias '{0}' is invalid --- must be a valid JS identifier which is not a reserved name.",
+          aliasAs);
+      }
+
+      var trackByExpGetter, trackByIdExpFn, trackByIdArrayFn, trackByIdObjFn;
+      var hashFnLocals = {$id: hashKey};
+
+      if (trackByExp) {
+        trackByExpGetter = $parse(trackByExp);
+      } else {
+        trackByIdArrayFn = function(key, value) {
+          return hashKey(value);
+        };
+        trackByIdObjFn = function(key) {
+          return key;
+        };
+      }
+
+      return function ngRepeatLink($scope, $element, $attr, ctrl, $transclude) {
+
+        if (trackByExpGetter) {
+          trackByIdExpFn = function(key, value, index) {
+            // assign key, value, and $index to the locals so that they can be used in hash functions
+            if (keyIdentifier) hashFnLocals[keyIdentifier] = key;
+            hashFnLocals[valueIdentifier] = value;
+            hashFnLocals.$index = index;
+            return trackByExpGetter($scope, hashFnLocals);
+          };
+        }
+
+        // Store a list of elements from previous run. This is a hash where key is the item from the
+        // iterator, and the value is objects with following properties.
+        //   - scope: bound scope
+        //   - element: previous element.
+        //   - index: position
+        //
+        // We are using no-proto object so that we don't need to guard against inherited props via
+        // hasOwnProperty.
+        var lastBlockMap = createMap();
+
+        //watch props
+        $scope.$watchCollection(rhs, function ngRepeatAction(collection) {
+          var index, length,
+              previousNode = $element[0],     // node that cloned nodes should be inserted after
+                                              // initialized to the comment node anchor
+              nextNode,
+              // Same as lastBlockMap but it has the current state. It will become the
+              // lastBlockMap on the next iteration.
+              nextBlockMap = createMap(),
+              collectionLength,
+              key, value, // key/value of iteration
+              trackById,
+              trackByIdFn,
+              collectionKeys,
+              block,       // last object information {scope, element, id}
+              nextBlockOrder,
+              elementsToRemove;
+
+          if (aliasAs) {
+            $scope[aliasAs] = collection;
+          }
+
+          if (isArrayLike(collection)) {
+            collectionKeys = collection;
+            trackByIdFn = trackByIdExpFn || trackByIdArrayFn;
+          } else {
+            trackByIdFn = trackByIdExpFn || trackByIdObjFn;
+            // if object, extract keys, sort them and use to determine order of iteration over obj props
+            collectionKeys = [];
+            for (var itemKey in collection) {
+              if (collection.hasOwnProperty(itemKey) && itemKey.charAt(0) != '$') {
+                collectionKeys.push(itemKey);
+              }
+            }
+            collectionKeys.sort();
+          }
+
+          collectionLength = collectionKeys.length;
+          nextBlockOrder = new Array(collectionLength);
+
+          // locate existing items
+          for (index = 0; index < collectionLength; index++) {
+            key = (collection === collectionKeys) ? index : collectionKeys[index];
+            value = collection[key];
+            trackById = trackByIdFn(key, value, index);
+            if (lastBlockMap[trackById]) {
+              // found previously seen block
+              block = lastBlockMap[trackById];
+              delete lastBlockMap[trackById];
+              nextBlockMap[trackById] = block;
+              nextBlockOrder[index] = block;
+            } else if (nextBlockMap[trackById]) {
+              // if collision detected. restore lastBlockMap and throw an error
+              forEach(nextBlockOrder, function(block) {
+                if (block && block.scope) lastBlockMap[block.id] = block;
+              });
+              throw ngRepeatMinErr('dupes',
+                  "Duplicates in a repeater are not allowed. Use 'track by' expression to specify unique keys. Repeater: {0}, Duplicate key: {1}, Duplicate value: {2}",
+                  expression, trackById, value);
+            } else {
+              // new never before seen block
+              nextBlockOrder[index] = {id: trackById, scope: undefined, clone: undefined};
+              nextBlockMap[trackById] = true;
+            }
+          }
+
+          // remove leftover items
+          for (var blockKey in lastBlockMap) {
+            block = lastBlockMap[blockKey];
+            elementsToRemove = getBlockNodes(block.clone);
+            $animate.leave(elementsToRemove);
+            if (elementsToRemove[0].parentNode) {
+              // if the element was not removed yet because of pending animation, mark it as deleted
+              // so that we can ignore it later
+              for (index = 0, length = elementsToRemove.length; index < length; index++) {
+                elementsToRemove[index][NG_REMOVED] = true;
+              }
+            }
+            block.scope.$destroy();
+          }
+
+          // we are not using forEach for perf reasons (trying to avoid #call)
+          for (index = 0; index < collectionLength; index++) {
+            key = (collection === collectionKeys) ? index : collectionKeys[index];
+            value = collection[key];
+            block = nextBlockOrder[index];
+
+            if (block.scope) {
+              // if we have already seen this object, then we need to reuse the
+              // associated scope/element
+
+              nextNode = previousNode;
+
+              // skip nodes that are already pending removal via leave animation
+              do {
+                nextNode = nextNode.nextSibling;
+              } while (nextNode && nextNode[NG_REMOVED]);
+
+              if (getBlockStart(block) != nextNode) {
+                // existing item which got moved
+                $animate.move(getBlockNodes(block.clone), null, jqLite(previousNode));
+              }
+              previousNode = getBlockEnd(block);
+              updateScope(block.scope, index, valueIdentifier, value, keyIdentifier, key, collectionLength);
+            } else {
+              // new item which we don't know about
+              $transclude(function ngRepeatTransclude(clone, scope) {
+                block.scope = scope;
+                // http://jsperf.com/clone-vs-createcomment
+                var endNode = ngRepeatEndComment.cloneNode(false);
+                clone[clone.length++] = endNode;
+
+                // TODO(perf): support naked previousNode in `enter` to avoid creation of jqLite wrapper?
+                $animate.enter(clone, null, jqLite(previousNode));
+                previousNode = endNode;
+                // Note: We only need the first/last node of the cloned nodes.
+                // However, we need to keep the reference to the jqlite wrapper as it might be changed later
+                // by a directive with templateUrl when its template arrives.
+                block.clone = clone;
+                nextBlockMap[block.id] = block;
+                updateScope(block.scope, index, valueIdentifier, value, keyIdentifier, key, collectionLength);
+              });
+            }
+          }
+          lastBlockMap = nextBlockMap;
+        });
+      };
+    }
+  };
+}];
+
+var NG_HIDE_CLASS = 'ng-hide';
+var NG_HIDE_IN_PROGRESS_CLASS = 'ng-hide-animate';
+/**
+ * @ngdoc directive
+ * @name ngShow
+ *
+ * @description
+ * The `ngShow` directive shows or hides the given HTML element based on the expression
+ * provided to the `ngShow` attribute. The element is shown or hidden by removing or adding
+ * the `.ng-hide` CSS class onto the element. The `.ng-hide` CSS class is predefined
+ * in AngularJS and sets the display style to none (using an !important flag).
+ * For CSP mode please add `angular-csp.css` to your html file (see {@link ng.directive:ngCsp ngCsp}).
+ *
+ * ```html
+ * <!-- when $scope.myValue is truthy (element is visible) -->
+ * <div ng-show="myValue"></div>
+ *
+ * <!-- when $scope.myValue is falsy (element is hidden) -->
+ * <div ng-show="myValue" class="ng-hide"></div>
+ * ```
+ *
+ * When the `ngShow` expression evaluates to a falsy value then the `.ng-hide` CSS class is added to the class
+ * attribute on the element causing it to become hidden. When truthy, the `.ng-hide` CSS class is removed
+ * from the element causing the element not to appear hidden.
+ *
+ * ## Why is !important used?
+ *
+ * You may be wondering why !important is used for the `.ng-hide` CSS class. This is because the `.ng-hide` selector
+ * can be easily overridden by heavier selectors. For example, something as simple
+ * as changing the display style on a HTML list item would make hidden elements appear visible.
+ * This also becomes a bigger issue when dealing with CSS frameworks.
+ *
+ * By using !important, the show and hide behavior will work as expected despite any clash between CSS selector
+ * specificity (when !important isn't used with any conflicting styles). If a developer chooses to override the
+ * styling to change how to hide an element then it is just a matter of using !important in their own CSS code.
+ *
+ * ### Overriding `.ng-hide`
+ *
+ * By default, the `.ng-hide` class will style the element with `display: none!important`. If you wish to change
+ * the hide behavior with ngShow/ngHide then this can be achieved by restating the styles for the `.ng-hide`
+ * class CSS. Note that the selector that needs to be used is actually `.ng-hide:not(.ng-hide-animate)` to cope
+ * with extra animation classes that can be added.
+ *
+ * ```css
+ * .ng-hide:not(.ng-hide-animate) {
+ *   /&#42; this is just another form of hiding an element &#42;/
+ *   display: block!important;
+ *   position: absolute;
+ *   top: -9999px;
+ *   left: -9999px;
+ * }
+ * ```
+ *
+ * By default you don't need to override in CSS anything and the animations will work around the display style.
+ *
+ * ## A note about animations with `ngShow`
+ *
+ * Animations in ngShow/ngHide work with the show and hide events that are triggered when the directive expression
+ * is true and false. This system works like the animation system present with ngClass except that
+ * you must also include the !important flag to override the display property
+ * so that you can perform an animation when the element is hidden during the time of the animation.
+ *
+ * ```css
+ * //
+ * //a working example can be found at the bottom of this page
+ * //
+ * .my-element.ng-hide-add, .my-element.ng-hide-remove {
+ *   /&#42; this is required as of 1.3x to properly
+ *      apply all styling in a show/hide animation &#42;/
+ *   transition: 0s linear all;
+ * }
+ *
+ * .my-element.ng-hide-add-active,
+ * .my-element.ng-hide-remove-active {
+ *   /&#42; the transition is defined in the active class &#42;/
+ *   transition: 1s linear all;
+ * }
+ *
+ * .my-element.ng-hide-add { ... }
+ * .my-element.ng-hide-add.ng-hide-add-active { ... }
+ * .my-element.ng-hide-remove { ... }
+ * .my-element.ng-hide-remove.ng-hide-remove-active { ... }
+ * ```
+ *
+ * Keep in mind that, as of AngularJS version 1.3.0-beta.11, there is no need to change the display
+ * property to block during animation states--ngAnimate will handle the style toggling automatically for you.
+ *
+ * @animations
+ * addClass: `.ng-hide` - happens after the `ngShow` expression evaluates to a truthy value and the just before contents are set to visible
+ * removeClass: `.ng-hide` - happens after the `ngShow` expression evaluates to a non truthy value and just before the contents are set to hidden
+ *
+ * @element ANY
+ * @param {expression} ngShow If the {@link guide/expression expression} is truthy
+ *     then the element is shown or hidden respectively.
+ *
+ * @example
+  <example module="ngAnimate" deps="angular-animate.js" animations="true">
+    <file name="index.html">
+      Click me: <input type="checkbox" ng-model="checked"><br/>
+      <div>
+        Show:
+        <div class="check-element animate-show" ng-show="checked">
+          <span class="glyphicon glyphicon-thumbs-up"></span> I show up when your checkbox is checked.
+        </div>
+      </div>
+      <div>
+        Hide:
+        <div class="check-element animate-show" ng-hide="checked">
+          <span class="glyphicon glyphicon-thumbs-down"></span> I hide when your checkbox is checked.
+        </div>
+      </div>
+    </file>
+    <file name="glyphicons.css">
+      @import url(../../components/bootstrap-3.1.1/css/bootstrap.css);
+    </file>
+    <file name="animations.css">
+      .animate-show {
+        line-height: 20px;
+        opacity: 1;
+        padding: 10px;
+        border: 1px solid black;
+        background: white;
+      }
+
+      .animate-show.ng-hide-add.ng-hide-add-active,
+      .animate-show.ng-hide-remove.ng-hide-remove-active {
+        -webkit-transition: all linear 0.5s;
+        transition: all linear 0.5s;
+      }
+
+      .animate-show.ng-hide {
+        line-height: 0;
+        opacity: 0;
+        padding: 0 10px;
+      }
+
+      .check-element {
+        padding: 10px;
+        border: 1px solid black;
+        background: white;
+      }
+    </file>
+    <file name="protractor.js" type="protractor">
+      var thumbsUp = element(by.css('span.glyphicon-thumbs-up'));
+      var thumbsDown = element(by.css('span.glyphicon-thumbs-down'));
+
+      it('should check ng-show / ng-hide', function() {
+        expect(thumbsUp.isDisplayed()).toBeFalsy();
+        expect(thumbsDown.isDisplayed()).toBeTruthy();
+
+        element(by.model('checked')).click();
+
+        expect(thumbsUp.isDisplayed()).toBeTruthy();
+        expect(thumbsDown.isDisplayed()).toBeFalsy();
+      });
+    </file>
+  </example>
+ */
+var ngShowDirective = ['$animate', function($animate) {
+  return {
+    restrict: 'A',
+    multiElement: true,
+    link: function(scope, element, attr) {
+      scope.$watch(attr.ngShow, function ngShowWatchAction(value) {
+        // we're adding a temporary, animation-specific class for ng-hide since this way
+        // we can control when the element is actually displayed on screen without having
+        // to have a global/greedy CSS selector that breaks when other animations are run.
+        // Read: https://github.com/angular/angular.js/issues/9103#issuecomment-58335845
+        $animate[value ? 'removeClass' : 'addClass'](element, NG_HIDE_CLASS, {
+          tempClasses: NG_HIDE_IN_PROGRESS_CLASS
+        });
+      });
+    }
+  };
+}];
+
+
+/**
+ * @ngdoc directive
+ * @name ngHide
+ *
+ * @description
+ * The `ngHide` directive shows or hides the given HTML element based on the expression
+ * provided to the `ngHide` attribute. The element is shown or hidden by removing or adding
+ * the `ng-hide` CSS class onto the element. The `.ng-hide` CSS class is predefined
+ * in AngularJS and sets the display style to none (using an !important flag).
+ * For CSP mode please add `angular-csp.css` to your html file (see {@link ng.directive:ngCsp ngCsp}).
+ *
+ * ```html
+ * <!-- when $scope.myValue is truthy (element is hidden) -->
+ * <div ng-hide="myValue" class="ng-hide"></div>
+ *
+ * <!-- when $scope.myValue is falsy (element is visible) -->
+ * <div ng-hide="myValue"></div>
+ * ```
+ *
+ * When the `ngHide` expression evaluates to a truthy value then the `.ng-hide` CSS class is added to the class
+ * attribute on the element causing it to become hidden. When falsy, the `.ng-hide` CSS class is removed
+ * from the element causing the element not to appear hidden.
+ *
+ * ## Why is !important used?
+ *
+ * You may be wondering why !important is used for the `.ng-hide` CSS class. This is because the `.ng-hide` selector
+ * can be easily overridden by heavier selectors. For example, something as simple
+ * as changing the display style on a HTML list item would make hidden elements appear visible.
+ * This also becomes a bigger issue when dealing with CSS frameworks.
+ *
+ * By using !important, the show and hide behavior will work as expected despite any clash between CSS selector
+ * specificity (when !important isn't used with any conflicting styles). If a developer chooses to override the
+ * styling to change how to hide an element then it is just a matter of using !important in their own CSS code.
+ *
+ * ### Overriding `.ng-hide`
+ *
+ * By default, the `.ng-hide` class will style the element with `display: none!important`. If you wish to change
+ * the hide behavior with ngShow/ngHide then this can be achieved by restating the styles for the `.ng-hide`
+ * class in CSS:
+ *
+ * ```css
+ * .ng-hide {
+ *   /&#42; this is just another form of hiding an element &#42;/
+ *   display: block!important;
+ *   position: absolute;
+ *   top: -9999px;
+ *   left: -9999px;
+ * }
+ * ```
+ *
+ * By default you don't need to override in CSS anything and the animations will work around the display style.
+ *
+ * ## A note about animations with `ngHide`
+ *
+ * Animations in ngShow/ngHide work with the show and hide events that are triggered when the directive expression
+ * is true and false. This system works like the animation system present with ngClass, except that the `.ng-hide`
+ * CSS class is added and removed for you instead of your own CSS class.
+ *
+ * ```css
+ * //
+ * //a working example can be found at the bottom of this page
+ * //
+ * .my-element.ng-hide-add, .my-element.ng-hide-remove {
+ *   transition: 0.5s linear all;
+ * }
+ *
+ * .my-element.ng-hide-add { ... }
+ * .my-element.ng-hide-add.ng-hide-add-active { ... }
+ * .my-element.ng-hide-remove { ... }
+ * .my-element.ng-hide-remove.ng-hide-remove-active { ... }
+ * ```
+ *
+ * Keep in mind that, as of AngularJS version 1.3.0-beta.11, there is no need to change the display
+ * property to block during animation states--ngAnimate will handle the style toggling automatically for you.
+ *
+ * @animations
+ * removeClass: `.ng-hide` - happens after the `ngHide` expression evaluates to a truthy value and just before the contents are set to hidden
+ * addClass: `.ng-hide` - happens after the `ngHide` expression evaluates to a non truthy value and just before the contents are set to visible
+ *
+ * @element ANY
+ * @param {expression} ngHide If the {@link guide/expression expression} is truthy then
+ *     the element is shown or hidden respectively.
+ *
+ * @example
+  <example module="ngAnimate" deps="angular-animate.js" animations="true">
+    <file name="index.html">
+      Click me: <input type="checkbox" ng-model="checked"><br/>
+      <div>
+        Show:
+        <div class="check-element animate-hide" ng-show="checked">
+          <span class="glyphicon glyphicon-thumbs-up"></span> I show up when your checkbox is checked.
+        </div>
+      </div>
+      <div>
+        Hide:
+        <div class="check-element animate-hide" ng-hide="checked">
+          <span class="glyphicon glyphicon-thumbs-down"></span> I hide when your checkbox is checked.
+        </div>
+      </div>
+    </file>
+    <file name="glyphicons.css">
+      @import url(../../components/bootstrap-3.1.1/css/bootstrap.css);
+    </file>
+    <file name="animations.css">
+      .animate-hide {
+        -webkit-transition: all linear 0.5s;
+        transition: all linear 0.5s;
+        line-height: 20px;
+        opacity: 1;
+        padding: 10px;
+        border: 1px solid black;
+        background: white;
+      }
+
+      .animate-hide.ng-hide {
+        line-height: 0;
+        opacity: 0;
+        padding: 0 10px;
+      }
+
+      .check-element {
+        padding: 10px;
+        border: 1px solid black;
+        background: white;
+      }
+    </file>
+    <file name="protractor.js" type="protractor">
+      var thumbsUp = element(by.css('span.glyphicon-thumbs-up'));
+      var thumbsDown = element(by.css('span.glyphicon-thumbs-down'));
+
+      it('should check ng-show / ng-hide', function() {
+        expect(thumbsUp.isDisplayed()).toBeFalsy();
+        expect(thumbsDown.isDisplayed()).toBeTruthy();
+
+        element(by.model('checked')).click();
+
+        expect(thumbsUp.isDisplayed()).toBeTruthy();
+        expect(thumbsDown.isDisplayed()).toBeFalsy();
+      });
+    </file>
+  </example>
+ */
+var ngHideDirective = ['$animate', function($animate) {
+  return {
+    restrict: 'A',
+    multiElement: true,
+    link: function(scope, element, attr) {
+      scope.$watch(attr.ngHide, function ngHideWatchAction(value) {
+        // The comment inside of the ngShowDirective explains why we add and
+        // remove a temporary class for the show/hide animation
+        $animate[value ? 'addClass' : 'removeClass'](element,NG_HIDE_CLASS, {
+          tempClasses: NG_HIDE_IN_PROGRESS_CLASS
+        });
+      });
+    }
+  };
+}];
+
+/**
+ * @ngdoc directive
+ * @name ngStyle
+ * @restrict AC
+ *
+ * @description
+ * The `ngStyle` directive allows you to set CSS style on an HTML element conditionally.
+ *
+ * @element ANY
+ * @param {expression} ngStyle
+ *
+ * {@link guide/expression Expression} which evals to an
+ * object whose keys are CSS style names and values are corresponding values for those CSS
+ * keys.
+ *
+ * Since some CSS style names are not valid keys for an object, they must be quoted.
+ * See the 'background-color' style in the example below.
+ *
+ * @example
+   <example>
+     <file name="index.html">
+        <input type="button" value="set color" ng-click="myStyle={color:'red'}">
+        <input type="button" value="set background" ng-click="myStyle={'background-color':'blue'}">
+        <input type="button" value="clear" ng-click="myStyle={}">
+        <br/>
+        <span ng-style="myStyle">Sample Text</span>
+        <pre>myStyle={{myStyle}}</pre>
+     </file>
+     <file name="style.css">
+       span {
+         color: black;
+       }
+     </file>
+     <file name="protractor.js" type="protractor">
+       var colorSpan = element(by.css('span'));
+
+       it('should check ng-style', function() {
+         expect(colorSpan.getCssValue('color')).toBe('rgba(0, 0, 0, 1)');
+         element(by.css('input[value=\'set color\']')).click();
+         expect(colorSpan.getCssValue('color')).toBe('rgba(255, 0, 0, 1)');
+         element(by.css('input[value=clear]')).click();
+         expect(colorSpan.getCssValue('color')).toBe('rgba(0, 0, 0, 1)');
+       });
+     </file>
+   </example>
+ */
+var ngStyleDirective = ngDirective(function(scope, element, attr) {
+  scope.$watch(attr.ngStyle, function ngStyleWatchAction(newStyles, oldStyles) {
+    if (oldStyles && (newStyles !== oldStyles)) {
+      forEach(oldStyles, function(val, style) { element.css(style, '');});
+    }
+    if (newStyles) element.css(newStyles);
+  }, true);
+});
+
+/**
+ * @ngdoc directive
+ * @name ngSwitch
+ * @restrict EA
+ *
+ * @description
+ * The `ngSwitch` directive is used to conditionally swap DOM structure on your template based on a scope expression.
+ * Elements within `ngSwitch` but without `ngSwitchWhen` or `ngSwitchDefault` directives will be preserved at the location
+ * as specified in the template.
+ *
+ * The directive itself works similar to ngInclude, however, instead of downloading template code (or loading it
+ * from the template cache), `ngSwitch` simply chooses one of the nested elements and makes it visible based on which element
+ * matches the value obtained from the evaluated expression. In other words, you define a container element
+ * (where you place the directive), place an expression on the **`on="..."` attribute**
+ * (or the **`ng-switch="..."` attribute**), define any inner elements inside of the directive and place
+ * a when attribute per element. The when attribute is used to inform ngSwitch which element to display when the on
+ * expression is evaluated. If a matching expression is not found via a when attribute then an element with the default
+ * attribute is displayed.
+ *
+ * <div class="alert alert-info">
+ * Be aware that the attribute values to match against cannot be expressions. They are interpreted
+ * as literal string values to match against.
+ * For example, **`ng-switch-when="someVal"`** will match against the string `"someVal"` not against the
+ * value of the expression `$scope.someVal`.
+ * </div>
+
+ * @animations
+ * enter - happens after the ngSwitch contents change and the matched child element is placed inside the container
+ * leave - happens just after the ngSwitch contents change and just before the former contents are removed from the DOM
+ *
+ * @usage
+ *
+ * ```
+ * <ANY ng-switch="expression">
+ *   <ANY ng-switch-when="matchValue1">...</ANY>
+ *   <ANY ng-switch-when="matchValue2">...</ANY>
+ *   <ANY ng-switch-default>...</ANY>
+ * </ANY>
+ * ```
+ *
+ *
+ * @scope
+ * @priority 1200
+ * @param {*} ngSwitch|on expression to match against <code>ng-switch-when</code>.
+ * On child elements add:
+ *
+ * * `ngSwitchWhen`: the case statement to match against. If match then this
+ *   case will be displayed. If the same match appears multiple times, all the
+ *   elements will be displayed.
+ * * `ngSwitchDefault`: the default case when no other case match. If there
+ *   are multiple default cases, all of them will be displayed when no other
+ *   case match.
+ *
+ *
+ * @example
+  <example module="switchExample" deps="angular-animate.js" animations="true">
+    <file name="index.html">
+      <div ng-controller="ExampleController">
+        <select ng-model="selection" ng-options="item for item in items">
+        </select>
+        <code>selection={{selection}}</code>
+        <hr/>
+        <div class="animate-switch-container"
+          ng-switch on="selection">
+            <div class="animate-switch" ng-switch-when="settings">Settings Div</div>
+            <div class="animate-switch" ng-switch-when="home">Home Span</div>
+            <div class="animate-switch" ng-switch-default>default</div>
+        </div>
+      </div>
+    </file>
+    <file name="script.js">
+      angular.module('switchExample', ['ngAnimate'])
+        .controller('ExampleController', ['$scope', function($scope) {
+          $scope.items = ['settings', 'home', 'other'];
+          $scope.selection = $scope.items[0];
+        }]);
+    </file>
+    <file name="animations.css">
+      .animate-switch-container {
+        position:relative;
+        background:white;
+        border:1px solid black;
+        height:40px;
+        overflow:hidden;
+      }
+
+      .animate-switch {
+        padding:10px;
+      }
+
+      .animate-switch.ng-animate {
+        -webkit-transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
+        transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
+
+        position:absolute;
+        top:0;
+        left:0;
+        right:0;
+        bottom:0;
+      }
+
+      .animate-switch.ng-leave.ng-leave-active,
+      .animate-switch.ng-enter {
+        top:-50px;
+      }
+      .animate-switch.ng-leave,
+      .animate-switch.ng-enter.ng-enter-active {
+        top:0;
+      }
+    </file>
+    <file name="protractor.js" type="protractor">
+      var switchElem = element(by.css('[ng-switch]'));
+      var select = element(by.model('selection'));
+
+      it('should start in settings', function() {
+        expect(switchElem.getText()).toMatch(/Settings Div/);
+      });
+      it('should change to home', function() {
+        select.all(by.css('option')).get(1).click();
+        expect(switchElem.getText()).toMatch(/Home Span/);
+      });
+      it('should select default', function() {
+        select.all(by.css('option')).get(2).click();
+        expect(switchElem.getText()).toMatch(/default/);
+      });
+    </file>
+  </example>
+ */
+var ngSwitchDirective = ['$animate', function($animate) {
+  return {
+    restrict: 'EA',
+    require: 'ngSwitch',
+
+    // asks for $scope to fool the BC controller module
+    controller: ['$scope', function ngSwitchController() {
+     this.cases = {};
+    }],
+    link: function(scope, element, attr, ngSwitchController) {
+      var watchExpr = attr.ngSwitch || attr.on,
+          selectedTranscludes = [],
+          selectedElements = [],
+          previousLeaveAnimations = [],
+          selectedScopes = [];
+
+      var spliceFactory = function(array, index) {
+          return function() { array.splice(index, 1); };
+      };
+
+      scope.$watch(watchExpr, function ngSwitchWatchAction(value) {
+        var i, ii;
+        for (i = 0, ii = previousLeaveAnimations.length; i < ii; ++i) {
+          $animate.cancel(previousLeaveAnimations[i]);
+        }
+        previousLeaveAnimations.length = 0;
+
+        for (i = 0, ii = selectedScopes.length; i < ii; ++i) {
+          var selected = getBlockNodes(selectedElements[i].clone);
+          selectedScopes[i].$destroy();
+          var promise = previousLeaveAnimations[i] = $animate.leave(selected);
+          promise.then(spliceFactory(previousLeaveAnimations, i));
+        }
+
+        selectedElements.length = 0;
+        selectedScopes.length = 0;
+
+        if ((selectedTranscludes = ngSwitchController.cases['!' + value] || ngSwitchController.cases['?'])) {
+          forEach(selectedTranscludes, function(selectedTransclude) {
+            selectedTransclude.transclude(function(caseElement, selectedScope) {
+              selectedScopes.push(selectedScope);
+              var anchor = selectedTransclude.element;
+              caseElement[caseElement.length++] = document.createComment(' end ngSwitchWhen: ');
+              var block = { clone: caseElement };
+
+              selectedElements.push(block);
+              $animate.enter(caseElement, anchor.parent(), anchor);
+            });
+          });
+        }
+      });
+    }
+  };
+}];
+
+var ngSwitchWhenDirective = ngDirective({
+  transclude: 'element',
+  priority: 1200,
+  require: '^ngSwitch',
+  multiElement: true,
+  link: function(scope, element, attrs, ctrl, $transclude) {
+    ctrl.cases['!' + attrs.ngSwitchWhen] = (ctrl.cases['!' + attrs.ngSwitchWhen] || []);
+    ctrl.cases['!' + attrs.ngSwitchWhen].push({ transclude: $transclude, element: element });
+  }
+});
+
+var ngSwitchDefaultDirective = ngDirective({
+  transclude: 'element',
+  priority: 1200,
+  require: '^ngSwitch',
+  multiElement: true,
+  link: function(scope, element, attr, ctrl, $transclude) {
+    ctrl.cases['?'] = (ctrl.cases['?'] || []);
+    ctrl.cases['?'].push({ transclude: $transclude, element: element });
+   }
+});
+
+/**
+ * @ngdoc directive
+ * @name ngTransclude
+ * @restrict EAC
+ *
+ * @description
+ * Directive that marks the insertion point for the transcluded DOM of the nearest parent directive that uses transclusion.
+ *
+ * Any existing content of the element that this directive is placed on will be removed before the transcluded content is inserted.
+ *
+ * @element ANY
+ *
+ * @example
+   <example module="transcludeExample">
+     <file name="index.html">
+       <script>
+         angular.module('transcludeExample', [])
+          .directive('pane', function(){
+             return {
+               restrict: 'E',
+               transclude: true,
+               scope: { title:'@' },
+               template: '<div style="border: 1px solid black;">' +
+                           '<div style="background-color: gray">{{title}}</div>' +
+                           '<ng-transclude></ng-transclude>' +
+                         '</div>'
+             };
+         })
+         .controller('ExampleController', ['$scope', function($scope) {
+           $scope.title = 'Lorem Ipsum';
+           $scope.text = 'Neque porro quisquam est qui dolorem ipsum quia dolor...';
+         }]);
+       </script>
+       <div ng-controller="ExampleController">
+         <input ng-model="title"> <br/>
+         <textarea ng-model="text"></textarea> <br/>
+         <pane title="{{title}}">{{text}}</pane>
+       </div>
+     </file>
+     <file name="protractor.js" type="protractor">
+        it('should have transcluded', function() {
+          var titleElement = element(by.model('title'));
+          titleElement.clear();
+          titleElement.sendKeys('TITLE');
+          var textElement = element(by.model('text'));
+          textElement.clear();
+          textElement.sendKeys('TEXT');
+          expect(element(by.binding('title')).getText()).toEqual('TITLE');
+          expect(element(by.binding('text')).getText()).toEqual('TEXT');
+        });
+     </file>
+   </example>
+ *
+ */
+var ngTranscludeDirective = ngDirective({
+  restrict: 'EAC',
+  link: function($scope, $element, $attrs, controller, $transclude) {
+    if (!$transclude) {
+      throw minErr('ngTransclude')('orphan',
+       'Illegal use of ngTransclude directive in the template! ' +
+       'No parent directive that requires a transclusion found. ' +
+       'Element: {0}',
+       startingTag($element));
+    }
+
+    $transclude(function(clone) {
+      $element.empty();
+      $element.append(clone);
+    });
+  }
+});
+
+/**
+ * @ngdoc directive
+ * @name script
+ * @restrict E
+ *
+ * @description
+ * Load the content of a `<script>` element into {@link ng.$templateCache `$templateCache`}, so that the
+ * template can be used by {@link ng.directive:ngInclude `ngInclude`},
+ * {@link ngRoute.directive:ngView `ngView`}, or {@link guide/directive directives}. The type of the
+ * `<script>` element must be specified as `text/ng-template`, and a cache name for the template must be
+ * assigned through the element's `id`, which can then be used as a directive's `templateUrl`.
+ *
+ * @param {string} type Must be set to `'text/ng-template'`.
+ * @param {string} id Cache name of the template.
+ *
+ * @example
+  <example>
+    <file name="index.html">
+      <script type="text/ng-template" id="/tpl.html">
+        Content of the template.
+      </script>
+
+      <a ng-click="currentTpl='/tpl.html'" id="tpl-link">Load inlined template</a>
+      <div id="tpl-content" ng-include src="currentTpl"></div>
+    </file>
+    <file name="protractor.js" type="protractor">
+      it('should load template defined inside script tag', function() {
+        element(by.css('#tpl-link')).click();
+        expect(element(by.css('#tpl-content')).getText()).toMatch(/Content of the template/);
+      });
+    </file>
+  </example>
+ */
+var scriptDirective = ['$templateCache', function($templateCache) {
+  return {
+    restrict: 'E',
+    terminal: true,
+    compile: function(element, attr) {
+      if (attr.type == 'text/ng-template') {
+        var templateUrl = attr.id,
+            text = element[0].text;
+
+        $templateCache.put(templateUrl, text);
+      }
+    }
+  };
+}];
+
+var ngOptionsMinErr = minErr('ngOptions');
+/**
+ * @ngdoc directive
+ * @name select
+ * @restrict E
+ *
+ * @description
+ * HTML `SELECT` element with angular data-binding.
+ *
+ * # `ngOptions`
+ *
+ * The `ngOptions` attribute can be used to dynamically generate a list of `<option>`
+ * elements for the `<select>` element using the array or object obtained by evaluating the
+ * `ngOptions` comprehension expression.
+ *
+ * In many cases, `ngRepeat` can be used on `<option>` elements instead of `ngOptions` to achieve a
+ * similar result. However, `ngOptions` provides some benefits such as reducing memory and
+ * increasing speed by not creating a new scope for each repeated instance, as well as providing
+ * more flexibility in how the `<select>`'s model is assigned via the `select` **`as`** part of the
+ * comprehension expression. `ngOptions` should be used when the `<select>` model needs to be bound
+ *  to a non-string value. This is because an option element can only be bound to string values at
+ * present.
+ *
+ * When an item in the `<select>` menu is selected, the array element or object property
+ * represented by the selected option will be bound to the model identified by the `ngModel`
+ * directive.
+ *
+ * Optionally, a single hard-coded `<option>` element, with the value set to an empty string, can
+ * be nested into the `<select>` element. This element will then represent the `null` or "not selected"
+ * option. See example below for demonstration.
+ *
+ * <div class="alert alert-warning">
+ * **Note:** `ngModel` compares by reference, not value. This is important when binding to an
+ * array of objects. See an example [in this jsfiddle](http://jsfiddle.net/qWzTb/).
+ * </div>
+ *
+ * ## `select` **`as`**
+ *
+ * Using `select` **`as`** will bind the result of the `select` expression to the model, but
+ * the value of the `<select>` and `<option>` html elements will be either the index (for array data sources)
+ * or property name (for object data sources) of the value within the collection. If a **`track by`** expression
+ * is used, the result of that expression will be set as the value of the `option` and `select` elements.
+ *
+ *
+ * ### `select` **`as`** and **`track by`**
+ *
+ * <div class="alert alert-warning">
+ * Do not use `select` **`as`** and **`track by`** in the same expression. They are not designed to work together.
+ * </div>
+ *
+ * Consider the following example:
+ *
+ * ```html
+ * <select ng-options="item.subItem as item.label for item in values track by item.id" ng-model="selected">
+ * ```
+ *
+ * ```js
+ * $scope.values = [{
+ *   id: 1,
+ *   label: 'aLabel',
+ *   subItem: { name: 'aSubItem' }
+ * }, {
+ *   id: 2,
+ *   label: 'bLabel',
+ *   subItem: { name: 'bSubItem' }
+ * }];
+ *
+ * $scope.selected = { name: 'aSubItem' };
+ * ```
+ *
+ * With the purpose of preserving the selection, the **`track by`** expression is always applied to the element
+ * of the data source (to `item` in this example). To calculate whether an element is selected, we do the
+ * following:
+ *
+ * 1. Apply **`track by`** to the elements in the array. In the example: `[1, 2]`
+ * 2. Apply **`track by`** to the already selected value in `ngModel`.
+ *    In the example: this is not possible as **`track by`** refers to `item.id`, but the selected
+ *    value from `ngModel` is `{name: 'aSubItem'}`, so the **`track by`** expression is applied to
+ *    a wrong object, the selected element can't be found, `<select>` is always reset to the "not
+ *    selected" option.
+ *
+ *
+ * @param {string} ngModel Assignable angular expression to data-bind to.
+ * @param {string=} name Property name of the form under which the control is published.
+ * @param {string=} required The control is considered valid only if value is entered.
+ * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+ *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+ *    `required` when you want to data-bind to the `required` attribute.
+ * @param {comprehension_expression=} ngOptions in one of the following forms:
+ *
+ *   * for array data sources:
+ *     * `label` **`for`** `value` **`in`** `array`
+ *     * `select` **`as`** `label` **`for`** `value` **`in`** `array`
+ *     * `label` **`group by`** `group` **`for`** `value` **`in`** `array`
+ *     * `label` **`group by`** `group` **`for`** `value` **`in`** `array` **`track by`** `trackexpr`
+ *     * `label` **`for`** `value` **`in`** `array` | orderBy:`orderexpr` **`track by`** `trackexpr`
+ *        (for including a filter with `track by`)
+ *   * for object data sources:
+ *     * `label` **`for (`**`key` **`,`** `value`**`) in`** `object`
+ *     * `select` **`as`** `label` **`for (`**`key` **`,`** `value`**`) in`** `object`
+ *     * `label` **`group by`** `group` **`for (`**`key`**`,`** `value`**`) in`** `object`
+ *     * `select` **`as`** `label` **`group by`** `group`
+ *         **`for` `(`**`key`**`,`** `value`**`) in`** `object`
+ *
+ * Where:
+ *
+ *   * `array` / `object`: an expression which evaluates to an array / object to iterate over.
+ *   * `value`: local variable which will refer to each item in the `array` or each property value
+ *      of `object` during iteration.
+ *   * `key`: local variable which will refer to a property name in `object` during iteration.
+ *   * `label`: The result of this expression will be the label for `<option>` element. The
+ *     `expression` will most likely refer to the `value` variable (e.g. `value.propertyName`).
+ *   * `select`: The result of this expression will be bound to the model of the parent `<select>`
+ *      element. If not specified, `select` expression will default to `value`.
+ *   * `group`: The result of this expression will be used to group options using the `<optgroup>`
+ *      DOM element.
+ *   * `trackexpr`: Used when working with an array of objects. The result of this expression will be
+ *      used to identify the objects in the array. The `trackexpr` will most likely refer to the
+ *     `value` variable (e.g. `value.propertyName`). With this the selection is preserved
+ *      even when the options are recreated (e.g. reloaded from the server).
+ *
+ * @example
+    <example module="selectExample">
+      <file name="index.html">
+        <script>
+        angular.module('selectExample', [])
+          .controller('ExampleController', ['$scope', function($scope) {
+            $scope.colors = [
+              {name:'black', shade:'dark'},
+              {name:'white', shade:'light'},
+              {name:'red', shade:'dark'},
+              {name:'blue', shade:'dark'},
+              {name:'yellow', shade:'light'}
+            ];
+            $scope.myColor = $scope.colors[2]; // red
+          }]);
+        </script>
+        <div ng-controller="ExampleController">
+          <ul>
+            <li ng-repeat="color in colors">
+              Name: <input ng-model="color.name">
+              [<a href ng-click="colors.splice($index, 1)">X</a>]
+            </li>
+            <li>
+              [<a href ng-click="colors.push({})">add</a>]
+            </li>
+          </ul>
+          <hr/>
+          Color (null not allowed):
+          <select ng-model="myColor" ng-options="color.name for color in colors"></select><br>
+
+          Color (null allowed):
+          <span  class="nullable">
+            <select ng-model="myColor" ng-options="color.name for color in colors">
+              <option value="">-- choose color --</option>
+            </select>
+          </span><br/>
+
+          Color grouped by shade:
+          <select ng-model="myColor" ng-options="color.name group by color.shade for color in colors">
+          </select><br/>
+
+
+          Select <a href ng-click="myColor = { name:'not in list', shade: 'other' }">bogus</a>.<br>
+          <hr/>
+          Currently selected: {{ {selected_color:myColor} }}
+          <div style="border:solid 1px black; height:20px"
+               ng-style="{'background-color':myColor.name}">
+          </div>
+        </div>
+      </file>
+      <file name="protractor.js" type="protractor">
+         it('should check ng-options', function() {
+           expect(element(by.binding('{selected_color:myColor}')).getText()).toMatch('red');
+           element.all(by.model('myColor')).first().click();
+           element.all(by.css('select[ng-model="myColor"] option')).first().click();
+           expect(element(by.binding('{selected_color:myColor}')).getText()).toMatch('black');
+           element(by.css('.nullable select[ng-model="myColor"]')).click();
+           element.all(by.css('.nullable select[ng-model="myColor"] option')).first().click();
+           expect(element(by.binding('{selected_color:myColor}')).getText()).toMatch('null');
+         });
+      </file>
+    </example>
+ */
+
+var ngOptionsDirective = valueFn({
+  restrict: 'A',
+  terminal: true
+});
+
+// jshint maxlen: false
+var selectDirective = ['$compile', '$parse', function($compile,   $parse) {
+                         //000011111111110000000000022222222220000000000000000000003333333333000000000000004444444444444440000000005555555555555550000000666666666666666000000000000000777777777700000000000000000008888888888
+  var NG_OPTIONS_REGEXP = /^\s*([\s\S]+?)(?:\s+as\s+([\s\S]+?))?(?:\s+group\s+by\s+([\s\S]+?))?\s+for\s+(?:([\$\w][\$\w]*)|(?:\(\s*([\$\w][\$\w]*)\s*,\s*([\$\w][\$\w]*)\s*\)))\s+in\s+([\s\S]+?)(?:\s+track\s+by\s+([\s\S]+?))?$/,
+      nullModelCtrl = {$setViewValue: noop};
+// jshint maxlen: 100
+
+  return {
+    restrict: 'E',
+    require: ['select', '?ngModel'],
+    controller: ['$element', '$scope', '$attrs', function($element, $scope, $attrs) {
+      var self = this,
+          optionsMap = {},
+          ngModelCtrl = nullModelCtrl,
+          nullOption,
+          unknownOption;
+
+
+      self.databound = $attrs.ngModel;
+
+
+      self.init = function(ngModelCtrl_, nullOption_, unknownOption_) {
+        ngModelCtrl = ngModelCtrl_;
+        nullOption = nullOption_;
+        unknownOption = unknownOption_;
+      };
+
+
+      self.addOption = function(value, element) {
+        assertNotHasOwnProperty(value, '"option value"');
+        optionsMap[value] = true;
+
+        if (ngModelCtrl.$viewValue == value) {
+          $element.val(value);
+          if (unknownOption.parent()) unknownOption.remove();
+        }
+        // Workaround for https://code.google.com/p/chromium/issues/detail?id=381459
+        // Adding an <option selected="selected"> element to a <select required="required"> should
+        // automatically select the new element
+        if (element && element[0].hasAttribute('selected')) {
+          element[0].selected = true;
+        }
+      };
+
+
+      self.removeOption = function(value) {
+        if (this.hasOption(value)) {
+          delete optionsMap[value];
+          if (ngModelCtrl.$viewValue === value) {
+            this.renderUnknownOption(value);
+          }
+        }
+      };
+
+
+      self.renderUnknownOption = function(val) {
+        var unknownVal = '? ' + hashKey(val) + ' ?';
+        unknownOption.val(unknownVal);
+        $element.prepend(unknownOption);
+        $element.val(unknownVal);
+        unknownOption.prop('selected', true); // needed for IE
+      };
+
+
+      self.hasOption = function(value) {
+        return optionsMap.hasOwnProperty(value);
+      };
+
+      $scope.$on('$destroy', function() {
+        // disable unknown option so that we don't do work when the whole select is being destroyed
+        self.renderUnknownOption = noop;
+      });
+    }],
+
+    link: function(scope, element, attr, ctrls) {
+      // if ngModel is not defined, we don't need to do anything
+      if (!ctrls[1]) return;
+
+      var selectCtrl = ctrls[0],
+          ngModelCtrl = ctrls[1],
+          multiple = attr.multiple,
+          optionsExp = attr.ngOptions,
+          nullOption = false, // if false, user will not be able to select it (used by ngOptions)
+          emptyOption,
+          renderScheduled = false,
+          // we can't just jqLite('<option>') since jqLite is not smart enough
+          // to create it in <select> and IE barfs otherwise.
+          optionTemplate = jqLite(document.createElement('option')),
+          optGroupTemplate =jqLite(document.createElement('optgroup')),
+          unknownOption = optionTemplate.clone();
+
+      // find "null" option
+      for (var i = 0, children = element.children(), ii = children.length; i < ii; i++) {
+        if (children[i].value === '') {
+          emptyOption = nullOption = children.eq(i);
+          break;
+        }
+      }
+
+      selectCtrl.init(ngModelCtrl, nullOption, unknownOption);
+
+      // required validator
+      if (multiple) {
+        ngModelCtrl.$isEmpty = function(value) {
+          return !value || value.length === 0;
+        };
+      }
+
+      if (optionsExp) setupAsOptions(scope, element, ngModelCtrl);
+      else if (multiple) setupAsMultiple(scope, element, ngModelCtrl);
+      else setupAsSingle(scope, element, ngModelCtrl, selectCtrl);
+
+
+      ////////////////////////////
+
+
+
+      function setupAsSingle(scope, selectElement, ngModelCtrl, selectCtrl) {
+        ngModelCtrl.$render = function() {
+          var viewValue = ngModelCtrl.$viewValue;
+
+          if (selectCtrl.hasOption(viewValue)) {
+            if (unknownOption.parent()) unknownOption.remove();
+            selectElement.val(viewValue);
+            if (viewValue === '') emptyOption.prop('selected', true); // to make IE9 happy
+          } else {
+            if (viewValue == null && emptyOption) {
+              selectElement.val('');
+            } else {
+              selectCtrl.renderUnknownOption(viewValue);
+            }
+          }
+        };
+
+        selectElement.on('change', function() {
+          scope.$apply(function() {
+            if (unknownOption.parent()) unknownOption.remove();
+            ngModelCtrl.$setViewValue(selectElement.val());
+          });
+        });
+      }
+
+      function setupAsMultiple(scope, selectElement, ctrl) {
+        var lastView;
+        ctrl.$render = function() {
+          var items = new HashMap(ctrl.$viewValue);
+          forEach(selectElement.find('option'), function(option) {
+            option.selected = isDefined(items.get(option.value));
+          });
+        };
+
+        // we have to do it on each watch since ngModel watches reference, but
+        // we need to work of an array, so we need to see if anything was inserted/removed
+        scope.$watch(function selectMultipleWatch() {
+          if (!equals(lastView, ctrl.$viewValue)) {
+            lastView = shallowCopy(ctrl.$viewValue);
+            ctrl.$render();
+          }
+        });
+
+        selectElement.on('change', function() {
+          scope.$apply(function() {
+            var array = [];
+            forEach(selectElement.find('option'), function(option) {
+              if (option.selected) {
+                array.push(option.value);
+              }
+            });
+            ctrl.$setViewValue(array);
+          });
+        });
+      }
+
+      function setupAsOptions(scope, selectElement, ctrl) {
+        var match;
+
+        if (!(match = optionsExp.match(NG_OPTIONS_REGEXP))) {
+          throw ngOptionsMinErr('iexp',
+            "Expected expression in form of " +
+            "'_select_ (as _label_)? for (_key_,)?_value_ in _collection_'" +
+            " but got '{0}'. Element: {1}",
+            optionsExp, startingTag(selectElement));
+        }
+
+        var displayFn = $parse(match[2] || match[1]),
+            valueName = match[4] || match[6],
+            selectAs = / as /.test(match[0]) && match[1],
+            selectAsFn = selectAs ? $parse(selectAs) : null,
+            keyName = match[5],
+            groupByFn = $parse(match[3] || ''),
+            valueFn = $parse(match[2] ? match[1] : valueName),
+            valuesFn = $parse(match[7]),
+            track = match[8],
+            trackFn = track ? $parse(match[8]) : null,
+            trackKeysCache = {},
+            // This is an array of array of existing option groups in DOM.
+            // We try to reuse these if possible
+            // - optionGroupsCache[0] is the options with no option group
+            // - optionGroupsCache[?][0] is the parent: either the SELECT or OPTGROUP element
+            optionGroupsCache = [[{element: selectElement, label:''}]],
+            //re-usable object to represent option's locals
+            locals = {};
+
+        if (nullOption) {
+          // compile the element since there might be bindings in it
+          $compile(nullOption)(scope);
+
+          // remove the class, which is added automatically because we recompile the element and it
+          // becomes the compilation root
+          nullOption.removeClass('ng-scope');
+
+          // we need to remove it before calling selectElement.empty() because otherwise IE will
+          // remove the label from the element. wtf?
+          nullOption.remove();
+        }
+
+        // clear contents, we'll add what's needed based on the model
+        selectElement.empty();
+
+        selectElement.on('change', selectionChanged);
+
+        ctrl.$render = render;
+
+        scope.$watchCollection(valuesFn, scheduleRendering);
+        scope.$watchCollection(getLabels, scheduleRendering);
+
+        if (multiple) {
+          scope.$watchCollection(function() { return ctrl.$modelValue; }, scheduleRendering);
+        }
+
+        // ------------------------------------------------------------------ //
+
+        function callExpression(exprFn, key, value) {
+          locals[valueName] = value;
+          if (keyName) locals[keyName] = key;
+          return exprFn(scope, locals);
+        }
+
+        function selectionChanged() {
+          scope.$apply(function() {
+            var collection = valuesFn(scope) || [];
+            var viewValue;
+            if (multiple) {
+              viewValue = [];
+              forEach(selectElement.val(), function(selectedKey) {
+                  selectedKey = trackFn ? trackKeysCache[selectedKey] : selectedKey;
+                viewValue.push(getViewValue(selectedKey, collection[selectedKey]));
+              });
+            } else {
+              var selectedKey = trackFn ? trackKeysCache[selectElement.val()] : selectElement.val();
+              viewValue = getViewValue(selectedKey, collection[selectedKey]);
+            }
+            ctrl.$setViewValue(viewValue);
+            render();
+          });
+        }
+
+        function getViewValue(key, value) {
+          if (key === '?') {
+            return undefined;
+          } else if (key === '') {
+            return null;
+          } else {
+            var viewValueFn = selectAsFn ? selectAsFn : valueFn;
+            return callExpression(viewValueFn, key, value);
+          }
+        }
+
+        function getLabels() {
+          var values = valuesFn(scope);
+          var toDisplay;
+          if (values && isArray(values)) {
+            toDisplay = new Array(values.length);
+            for (var i = 0, ii = values.length; i < ii; i++) {
+              toDisplay[i] = callExpression(displayFn, i, values[i]);
+            }
+            return toDisplay;
+          } else if (values) {
+            // TODO: Add a test for this case
+            toDisplay = {};
+            for (var prop in values) {
+              if (values.hasOwnProperty(prop)) {
+                toDisplay[prop] = callExpression(displayFn, prop, values[prop]);
+              }
+            }
+          }
+          return toDisplay;
+        }
+
+        function createIsSelectedFn(viewValue) {
+          var selectedSet;
+          if (multiple) {
+            if (trackFn && isArray(viewValue)) {
+
+              selectedSet = new HashMap([]);
+              for (var trackIndex = 0; trackIndex < viewValue.length; trackIndex++) {
+                // tracking by key
+                selectedSet.put(callExpression(trackFn, null, viewValue[trackIndex]), true);
+              }
+            } else {
+              selectedSet = new HashMap(viewValue);
+            }
+          } else if (trackFn) {
+            viewValue = callExpression(trackFn, null, viewValue);
+          }
+
+          return function isSelected(key, value) {
+            var compareValueFn;
+            if (trackFn) {
+              compareValueFn = trackFn;
+            } else if (selectAsFn) {
+              compareValueFn = selectAsFn;
+            } else {
+              compareValueFn = valueFn;
+            }
+
+            if (multiple) {
+              return isDefined(selectedSet.remove(callExpression(compareValueFn, key, value)));
+            } else {
+              return viewValue === callExpression(compareValueFn, key, value);
+            }
+          };
+        }
+
+        function scheduleRendering() {
+          if (!renderScheduled) {
+            scope.$$postDigest(render);
+            renderScheduled = true;
+          }
+        }
+
+        /**
+         * A new labelMap is created with each render.
+         * This function is called for each existing option with added=false,
+         * and each new option with added=true.
+         * - Labels that are passed to this method twice,
+         * (once with added=true and once with added=false) will end up with a value of 0, and
+         * will cause no change to happen to the corresponding option.
+         * - Labels that are passed to this method only once with added=false will end up with a
+         * value of -1 and will eventually be passed to selectCtrl.removeOption()
+         * - Labels that are passed to this method only once with added=true will end up with a
+         * value of 1 and will eventually be passed to selectCtrl.addOption()
+        */
+        function updateLabelMap(labelMap, label, added) {
+          labelMap[label] = labelMap[label] || 0;
+          labelMap[label] += (added ? 1 : -1);
+        }
+
+        function render() {
+          renderScheduled = false;
+
+          // Temporary location for the option groups before we render them
+          var optionGroups = {'':[]},
+              optionGroupNames = [''],
+              optionGroupName,
+              optionGroup,
+              option,
+              existingParent, existingOptions, existingOption,
+              viewValue = ctrl.$viewValue,
+              values = valuesFn(scope) || [],
+              keys = keyName ? sortedKeys(values) : values,
+              key,
+              value,
+              groupLength, length,
+              groupIndex, index,
+              labelMap = {},
+              selected,
+              isSelected = createIsSelectedFn(viewValue),
+              anySelected = false,
+              lastElement,
+              element,
+              label,
+              optionId;
+
+          trackKeysCache = {};
+
+          // We now build up the list of options we need (we merge later)
+          for (index = 0; length = keys.length, index < length; index++) {
+            key = index;
+            if (keyName) {
+              key = keys[index];
+              if (key.charAt(0) === '$') continue;
+            }
+            value = values[key];
+
+            optionGroupName = callExpression(groupByFn, key, value) || '';
+            if (!(optionGroup = optionGroups[optionGroupName])) {
+              optionGroup = optionGroups[optionGroupName] = [];
+              optionGroupNames.push(optionGroupName);
+            }
+
+            selected = isSelected(key, value);
+            anySelected = anySelected || selected;
+
+            label = callExpression(displayFn, key, value); // what will be seen by the user
+
+            // doing displayFn(scope, locals) || '' overwrites zero values
+            label = isDefined(label) ? label : '';
+            optionId = trackFn ? trackFn(scope, locals) : (keyName ? keys[index] : index);
+            if (trackFn) {
+              trackKeysCache[optionId] = key;
+            }
+
+            optionGroup.push({
+              // either the index into array or key from object
+              id: optionId,
+              label: label,
+              selected: selected                   // determine if we should be selected
+            });
+          }
+          if (!multiple) {
+            if (nullOption || viewValue === null) {
+              // insert null option if we have a placeholder, or the model is null
+              optionGroups[''].unshift({id:'', label:'', selected:!anySelected});
+            } else if (!anySelected) {
+              // option could not be found, we have to insert the undefined item
+              optionGroups[''].unshift({id:'?', label:'', selected:true});
+            }
+          }
+
+          // Now we need to update the list of DOM nodes to match the optionGroups we computed above
+          for (groupIndex = 0, groupLength = optionGroupNames.length;
+               groupIndex < groupLength;
+               groupIndex++) {
+            // current option group name or '' if no group
+            optionGroupName = optionGroupNames[groupIndex];
+
+            // list of options for that group. (first item has the parent)
+            optionGroup = optionGroups[optionGroupName];
+
+            if (optionGroupsCache.length <= groupIndex) {
+              // we need to grow the optionGroups
+              existingParent = {
+                element: optGroupTemplate.clone().attr('label', optionGroupName),
+                label: optionGroup.label
+              };
+              existingOptions = [existingParent];
+              optionGroupsCache.push(existingOptions);
+              selectElement.append(existingParent.element);
+            } else {
+              existingOptions = optionGroupsCache[groupIndex];
+              existingParent = existingOptions[0];  // either SELECT (no group) or OPTGROUP element
+
+              // update the OPTGROUP label if not the same.
+              if (existingParent.label != optionGroupName) {
+                existingParent.element.attr('label', existingParent.label = optionGroupName);
+              }
+            }
+
+            lastElement = null;  // start at the beginning
+            for (index = 0, length = optionGroup.length; index < length; index++) {
+              option = optionGroup[index];
+              if ((existingOption = existingOptions[index + 1])) {
+                // reuse elements
+                lastElement = existingOption.element;
+                if (existingOption.label !== option.label) {
+                  updateLabelMap(labelMap, existingOption.label, false);
+                  updateLabelMap(labelMap, option.label, true);
+                  lastElement.text(existingOption.label = option.label);
+                  lastElement.prop('label', existingOption.label);
+                }
+                if (existingOption.id !== option.id) {
+                  lastElement.val(existingOption.id = option.id);
+                }
+                // lastElement.prop('selected') provided by jQuery has side-effects
+                if (lastElement[0].selected !== option.selected) {
+                  lastElement.prop('selected', (existingOption.selected = option.selected));
+                  if (msie) {
+                    // See #7692
+                    // The selected item wouldn't visually update on IE without this.
+                    // Tested on Win7: IE9, IE10 and IE11. Future IEs should be tested as well
+                    lastElement.prop('selected', existingOption.selected);
+                  }
+                }
+              } else {
+                // grow elements
+
+                // if it's a null option
+                if (option.id === '' && nullOption) {
+                  // put back the pre-compiled element
+                  element = nullOption;
+                } else {
+                  // jQuery(v1.4.2) Bug: We should be able to chain the method calls, but
+                  // in this version of jQuery on some browser the .text() returns a string
+                  // rather then the element.
+                  (element = optionTemplate.clone())
+                      .val(option.id)
+                      .prop('selected', option.selected)
+                      .attr('selected', option.selected)
+                      .prop('label', option.label)
+                      .text(option.label);
+                }
+
+                existingOptions.push(existingOption = {
+                    element: element,
+                    label: option.label,
+                    id: option.id,
+                    selected: option.selected
+                });
+                updateLabelMap(labelMap, option.label, true);
+                if (lastElement) {
+                  lastElement.after(element);
+                } else {
+                  existingParent.element.append(element);
+                }
+                lastElement = element;
+              }
+            }
+            // remove any excessive OPTIONs in a group
+            index++; // increment since the existingOptions[0] is parent element not OPTION
+            while (existingOptions.length > index) {
+              option = existingOptions.pop();
+              updateLabelMap(labelMap, option.label, false);
+              option.element.remove();
+            }
+          }
+          // remove any excessive OPTGROUPs from select
+          while (optionGroupsCache.length > groupIndex) {
+            // remove all the labels in the option group
+            optionGroup = optionGroupsCache.pop();
+            for (index = 1; index < optionGroup.length; ++index) {
+              updateLabelMap(labelMap, optionGroup[index].label, false);
+            }
+            optionGroup[0].element.remove();
+          }
+          forEach(labelMap, function(count, label) {
+            if (count > 0) {
+              selectCtrl.addOption(label);
+            } else if (count < 0) {
+              selectCtrl.removeOption(label);
+            }
+          });
+        }
+      }
+    }
+  };
+}];
+
+var optionDirective = ['$interpolate', function($interpolate) {
+  var nullSelectCtrl = {
+    addOption: noop,
+    removeOption: noop
+  };
+
+  return {
+    restrict: 'E',
+    priority: 100,
+    compile: function(element, attr) {
+      if (isUndefined(attr.value)) {
+        var interpolateFn = $interpolate(element.text(), true);
+        if (!interpolateFn) {
+          attr.$set('value', element.text());
+        }
+      }
+
+      return function(scope, element, attr) {
+        var selectCtrlName = '$selectController',
+            parent = element.parent(),
+            selectCtrl = parent.data(selectCtrlName) ||
+              parent.parent().data(selectCtrlName); // in case we are in optgroup
+
+        if (!selectCtrl || !selectCtrl.databound) {
+          selectCtrl = nullSelectCtrl;
+        }
+
+        if (interpolateFn) {
+          scope.$watch(interpolateFn, function interpolateWatchAction(newVal, oldVal) {
+            attr.$set('value', newVal);
+            if (oldVal !== newVal) {
+              selectCtrl.removeOption(oldVal);
+            }
+            selectCtrl.addOption(newVal, element);
+          });
+        } else {
+          selectCtrl.addOption(attr.value, element);
+        }
+
+        element.on('$destroy', function() {
+          selectCtrl.removeOption(attr.value);
+        });
+      };
+    }
+  };
+}];
+
+var styleDirective = valueFn({
+  restrict: 'E',
+  terminal: false
+});
+
+var requiredDirective = function() {
+  return {
+    restrict: 'A',
+    require: '?ngModel',
+    link: function(scope, elm, attr, ctrl) {
+      if (!ctrl) return;
+      attr.required = true; // force truthy in case we are on non input element
+
+      ctrl.$validators.required = function(modelValue, viewValue) {
+        return !attr.required || !ctrl.$isEmpty(viewValue);
+      };
+
+      attr.$observe('required', function() {
+        ctrl.$validate();
+      });
+    }
+  };
+};
+
+
+var patternDirective = function() {
+  return {
+    restrict: 'A',
+    require: '?ngModel',
+    link: function(scope, elm, attr, ctrl) {
+      if (!ctrl) return;
+
+      var regexp, patternExp = attr.ngPattern || attr.pattern;
+      attr.$observe('pattern', function(regex) {
+        if (isString(regex) && regex.length > 0) {
+          regex = new RegExp('^' + regex + '$');
+        }
+
+        if (regex && !regex.test) {
+          throw minErr('ngPattern')('noregexp',
+            'Expected {0} to be a RegExp but was {1}. Element: {2}', patternExp,
+            regex, startingTag(elm));
+        }
+
+        regexp = regex || undefined;
+        ctrl.$validate();
+      });
+
+      ctrl.$validators.pattern = function(modelValue, viewValue) {
+        // HTML5 pattern constraint validates the input value, so we validate the viewValue
+        return ctrl.$isEmpty(viewValue) || isUndefined(regexp) || regexp.test(viewValue);
+      };
+    }
+  };
+};
+
+
+var maxlengthDirective = function() {
+  return {
+    restrict: 'A',
+    require: '?ngModel',
+    link: function(scope, elm, attr, ctrl) {
+      if (!ctrl) return;
+
+      var maxlength = -1;
+      attr.$observe('maxlength', function(value) {
+        var intVal = int(value);
+        maxlength = isNaN(intVal) ? -1 : intVal;
+        ctrl.$validate();
+      });
+      ctrl.$validators.maxlength = function(modelValue, viewValue) {
+        return (maxlength < 0) || ctrl.$isEmpty(viewValue) || (viewValue.length <= maxlength);
+      };
+    }
+  };
+};
+
+var minlengthDirective = function() {
+  return {
+    restrict: 'A',
+    require: '?ngModel',
+    link: function(scope, elm, attr, ctrl) {
+      if (!ctrl) return;
+
+      var minlength = 0;
+      attr.$observe('minlength', function(value) {
+        minlength = int(value) || 0;
+        ctrl.$validate();
+      });
+      ctrl.$validators.minlength = function(modelValue, viewValue) {
+        return ctrl.$isEmpty(viewValue) || viewValue.length >= minlength;
+      };
+    }
+  };
+};
+
+  if (window.angular.bootstrap) {
+    //AngularJS is already loaded, so we can return here...
+    console.log('WARNING: Tried to load angular more than once.');
+    return;
+  }
+
+  //try to bind to jquery now so that one can write jqLite(document).ready()
+  //but we will rebind on bootstrap again.
+  bindJQuery();
+
+  publishExternalAPI(angular);
+
+  jqLite(document).ready(function() {
+    angularInit(document, bootstrap);
+  });
+
+})(window, document);
+
+!window.angular.$$csp() && window.angular.element(document.head).prepend('<style type="text/css">@charset "UTF-8";[ng\\:cloak],[ng-cloak],[data-ng-cloak],[x-ng-cloak],.ng-cloak,.x-ng-cloak,.ng-hide:not(.ng-hide-animate){display:none !important;}ng\\:form{display:block;}</style>');
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