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var left = 22;
var right = 22;
var lowTemperature = 15;
var hiTemperature = 30;
var temperatures = [];
var isScrolling;
var elementHeight;
function createTemperatureElement() {
var element = document.createElement('div');
element.classList = ['temperature'];
element.style.height = elementHeight+'px';
element.style.lineHeight = elementHeight+'px';
return element;
}
function update(node, index) {
node.scrollTop = index*elementHeight;
for( var i=0; i<node.children.length; i++) {
node.children[i].setAttribute('enabled',false);
}
node.children[index].setAttribute('enabled', true);
}
module.exports = {
left: function(node) {
clearTimeout(isScrolling);
isScrolling = setTimeout(function(){
var index = Math.round(node.scrollTop/elementHeight);
left = temperatures[index];
update(node, index);
console.log('LEFT', left);
}, 100);
},
right: function(node) {
clearTimeout(isScrolling);
isScrolling = setTimeout(function(){
var index = Math.round(node.scrollTop/elementHeight);
right = temperatures[index];
update(node, index);
console.log('RIGHT', right);
}, 100);
},
init: function() {
var leftTemperature = document.getElementById('lefttemperature');
var rightTemperature = document.getElementById('righttemperature');
elementHeight = leftTemperature.offsetHeight/2;
for( var i=lowTemperature; i<=hiTemperature; i++) {
var element = createTemperatureElement();
if( i === lowTemperature) {
element.innerHTML = 'LO';
} else if( i === hiTemperature ) {
element.innerHTML = 'HI';
} else {
element.innerHTML = i+'º';
}
leftTemperature.appendChild(element);
rightTemperature.appendChild(element.cloneNode(true));
temperatures[temperatures.length] = i;
}
leftTemperature.appendChild(createTemperatureElement());
rightTemperature.appendChild(createTemperatureElement());
update(leftTemperature, temperatures.indexOf(left));
update(rightTemperature, temperatures.indexOf(right));
}
}
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