104 lines
3.1 KiB
JavaScript
104 lines
3.1 KiB
JavaScript
'use strict';
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// Ox.js Developer Version
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/*
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Usage:
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Ox.load(callback)
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Ox.load(module, callback)
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Ox.load(module, options, callback)
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Ox.load({module: options, module: options}, callback)
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*/
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window.Ox = {
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load: function() {
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var args = arguments,
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callback = args[args.length - 1],
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path = getPath();
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loadJSON(function(data) {
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loadScripts(data, function() {
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if (args.length == 1) {
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callback()
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} else {
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Ox.load.apply(null, args);
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}
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});
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});
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function getPath() {
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var i, path, scripts = document.getElementsByTagName('script');
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for (i = 0; i < scripts.length; i++) {
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if (/Ox\.js$/.test(scripts[i].src)) {
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path = scripts[i].src.replace(/Ox\.js$/, '');
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}
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}
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return path;
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}
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function loadJSON(callback) {
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var req = new XMLHttpRequest();
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req.open(
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'GET',
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path + 'Ox/json/Ox.json?' + Math.floor(Math.random() * 1000000),
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true
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);
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req.onreadystatechange = function() {
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if (req.readyState == 4) {
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if (req.status == 200) {
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callback(JSON.parse(req.responseText));
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} else {
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// ...
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}
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}
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};
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req.send();
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}
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function loadScripts(scripts, callback) {
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loadScriptsParallel(scripts[0], function() {
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loadScriptsParallel(scripts[1], function() {
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loadScriptsParallel(scripts[2], callback);
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});
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});
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}
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// fixme: unused
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function loadScriptsSerial(scripts, callback) {
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loadScript(scripts.shift(), function() {
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if (scripts.length) {
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loadScriptsSerial(scripts, callback);
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} else {
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callback();
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}
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});
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}
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function loadScriptsParallel(scripts, callback) {
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var counter = 0, i, length = scripts.length;
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for (i = 0; i < length; i++) {
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loadScript(scripts[i], function() {
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++counter == length && callback();
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});
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}
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}
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function loadScript(script, callback) {
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var element = document.createElement('script'),
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head = document.head || document.getElementsByTagName( "head" )[0] || document.documentElement;
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if (/MSIE/.test(navigator.userAgent)) {
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// fixme: find a way to check if css/js have loaded in msie
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setTimeout(callback, 2500);
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} else {
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element.onload = callback;
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}
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element.src = path + script + '?' + parseInt(Math.random() * 1000000);
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element.type = 'text/javascript';
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head.appendChild(element);
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}
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}
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};
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