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Versions: 13
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Stored size: 1.82 KB
Contents
// ==========================================================================
// Project: SproutCore - JavaScript Application Framework
// Copyright: ©2006-2010 Sprout Systems, Inc. and contributors.
// Portions ©2008-2011 Apple Inc. All rights reserved.
// License: Licensed under MIT license (see license.js)
// ==========================================================================
sc_require("system/task_queue");
/** @ignore */
SC.chance = {
preload_task: SC.Task.create({
run: function(queue) {
var bank = SC.chance.bank, idx, len = bank.length, images = SC.chance.images;
for (idx = 0; idx < len; idx++) {
if (images.length < 1) {
return SC.chance.didPreloadImages();
}
var img = images.pop();
bank[idx].className = img;
}
// to force a break:
setTimeout(function(){
SC.run(function() {
SC.backgroundTaskQueue.push(SC.chance.preload_task);
});
}, 0);
}
}),
images: [],
bank: [],
PRELOAD_CONCURRENCY: 50,
preloadImages: function() {
if (window.CHANCE_SLICES) {
this.images = window.CHANCE_SLICES;
}
var bank = this.bank, idx, con = this.PRELOAD_CONCURRENCY;
for (idx = 0; idx < con; idx++) {
var img = document.createElement('div');
document.body.appendChild(img);
bank.push(img);
}
SC.run(function(){
SC.backgroundTaskQueue.push(SC.chance.preload_task);
});
},
didPreloadImages: function() {
var bank = this.bank, idx, len = bank.length;
for (idx = 0; idx < len; idx++) {
document.body.removeChild(bank[idx]);
bank[idx] = undefined;
}
}
};
// Disabling image proloading in the mean time temporarly.
// If you want to enable it in your
// app add the following line.
//SC.ready(SC.chance, 'preloadImages');
Version data entries
13 entries across 13 versions & 1 rubygems