oxjs/source/Ox.UI/js/Core/LoadingIcon.js

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'use strict';
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/*@
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Ox.LoadingIcon <f> Loading Icon Element
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options <o> Options object
size <n|s|16> size of icon
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self <o> Shared private variable
([options[, self]]) -> <o:Ox.Element> Loading Icon Element
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@*/
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Ox.LoadingIcon = function(options, self) {
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self = self || {};
var that = Ox.Element('<img>', self)
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.defaults({
size: 16,
video: false
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})
.options(options || {})
.addClass('OxLoadingIcon')
.attr({
src: Ox.UI.getImageURL(
'symbolLoading',
self.options.video ? [255, 255, 255] : null
)
});
Ox.isNumber(self.options.size)
? that.css({width: self.options.size, height: self.options.size})
: that.addClass('Ox' + Ox.toTitleCase(self.options.size));
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that.stopAnimation = that.stop;
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/*@
start <f> Start loading animation
() -> <f> Loading Icon Element
@*/
that.start = function(callback) {
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var css, deg = 0, previousTime = +new Date();
if (!self.loadingInterval) {
self.loadingInterval = setInterval(function() {
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var currentTime = +new Date(),
delta = (currentTime - previousTime) / 1000;
previousTime = currentTime;
deg = Math.round((deg + delta * 360) % 360 / 30) * 30;
css = 'rotate(' + deg + 'deg)';
that.css({
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MozTransform: css,
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MsTransform: css,
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OTransform: css,
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WebkitTransform: css
});
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}, 83);
that.stopAnimation().animate({opacity: 1}, 250, function() {
callback && callback();
});
}
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return that;
};
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/*@
stop <f> Stop loading animation
() -> <f> Loading Icon Element
@*/
that.stop = function(callback) {
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if (self.loadingInterval && !self.stopping) {
self.stopping = true;
that.stopAnimation().animate({opacity: 0}, 250, function() {
var css = 'rotate(0deg)';
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clearInterval(self.loadingInterval);
self.loadingInterval = null;
self.stopping = false;
that.css({
MozTransform: css,
MsTransform: css,
OTransform: css,
WebkitTransform: css
});
callback && callback();
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});
}
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return that;
};
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return that;
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};