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-rw-r--r--CAN-binder/low-can-demo/app/Frontend/js/AFB.js170
1 files changed, 170 insertions, 0 deletions
diff --git a/CAN-binder/low-can-demo/app/Frontend/js/AFB.js b/CAN-binder/low-can-demo/app/Frontend/js/AFB.js
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index 00000000..aa1198cb
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+++ b/CAN-binder/low-can-demo/app/Frontend/js/AFB.js
@@ -0,0 +1,170 @@
+AFB = function(base, initialtoken){
+
+var urlws = "ws://"+window.location.host+"/"+base;
+var urlhttp = "http://"+window.location.host+"/"+base;
+
+/*********************************************/
+/**** ****/
+/**** AFB_context ****/
+/**** ****/
+/*********************************************/
+var AFB_context = (function() {
+ var UUID;
+ var TOKEN = initialtoken;
+
+ var context = function(token, uuid) {
+ this.token = token;
+ this.uuid = uuid;
+ };
+
+ context.prototype = {
+ get token() {return TOKEN;},
+ set token(tok) {if(tok) TOKEN=tok;},
+ get uuid() {return UUID;},
+ set uuid(id) {if(id) UUID=id;}
+ };
+
+ return new context();
+})();
+/*********************************************/
+/**** ****/
+/**** AFB_websocket ****/
+/**** ****/
+/*********************************************/
+var AFB_websocket = (function() {
+ var CALL = 2;
+ var RETOK = 3;
+ var RETERR = 4;
+ var EVENT = 5;
+
+ var PROTO1 = "x-afb-ws-json1";
+
+ var result = function(onopen, onabort) {
+ var u = urlws;
+ if (AFB_context.token) {
+ u = u + '?x-afb-token=' + AFB_context.token;
+ if (AFB_context.uuid)
+ u = u + '&x-afb-uuid=' + AFB_context.uuid;
+ }
+ this.ws = new WebSocket(u, [ PROTO1 ]);
+ this.pendings = {};
+ this.awaitens = {};
+ this.counter = 0;
+ this.ws.onopen = onopen.bind(this);
+ this.ws.onerror = onerror.bind(this);
+ this.ws.onclose = onclose.bind(this);
+ this.ws.onmessage = onmessage.bind(this);
+ this.onopen = onopen;
+ this.onabort = onabort;
+ };
+
+ function onerror(event) {
+ var f = this.onabort;
+ if (f) {
+ delete this.onopen;
+ delete this.onabort;
+ f && f(this);
+ }
+ this.onerror && this.onerror(this);
+ }
+
+ function onopen(event) {
+ var f = this.onopen;
+ delete this.onopen;
+ delete this.onabort;
+ f && f(this);
+ }
+
+ function onclose(event) {
+ for (var id in this.pendings) {
+ var ferr = this.pendings[id].onerror;
+ ferr && ferr(null, this);
+ }
+ this.pendings = {};
+ this.onclose && this.onclose();
+ }
+
+ function fire(awaitens, name, data) {
+ var a = awaitens[name];
+ if (a)
+ a.forEach(function(handler){handler(data);});
+ var i = name.indexOf("/");
+ if (i >= 0) {
+ a = awaitens[name.substring(0,i)];
+ if (a)
+ a.forEach(function(handler){handler(data);});
+ }
+ a = awaitens["*"];
+ if (a)
+ a.forEach(function(handler){handler(data);});
+ }
+
+ function reply(pendings, id, ans, offset) {
+ if (id in pendings) {
+ var p = pendings[id];
+ delete pendings[id];
+ var f = p[offset];
+ f && f(ans);
+ }
+ }
+
+ function onmessage(event) {
+ var obj = JSON.parse(event.data);
+ var code = obj[0];
+ var id = obj[1];
+ var ans = obj[2];
+ AFB_context.token = obj[3];
+ switch (code) {
+ case RETOK:
+ reply(this.pendings, id, ans, 0);
+ break;
+ case RETERR:
+ reply(this.pendings, id, ans, 1);
+ break;
+ case EVENT:
+ default:
+ fire(this.awaitens, id, ans);
+ break;
+ }
+ }
+
+ function close() {
+ this.ws.close();
+ }
+
+ function call(method, request, onsuccess, onfailure) {
+ var id, arr;
+ do {
+ id = String(this.counter = 4095 & (this.counter + 1));
+ } while (id in this.pendings);
+ this.pendings[id] = [ onsuccess, onfailure ];
+ arr = [CALL, id, method, request ];
+ if (AFB_context.token) arr.push(AFB_context.token);
+ this.ws.send(JSON.stringify(arr));
+ }
+
+ function onevent(name, handler) {
+ var id = name;
+ var list = this.awaitens[id] || (this.awaitens[id] = []);
+ list.push(handler);
+ }
+
+ result.prototype = {
+ close: close,
+ call: call,
+ onevent: onevent
+ };
+
+ return result;
+})();
+/*********************************************/
+/**** ****/
+/**** ****/
+/**** ****/
+/*********************************************/
+return {
+ context: AFB_context,
+ ws: AFB_websocket
+};
+};
+