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/*
* Require-CSS RequireJS css! loader plugin
* 0.1.8
* Guy Bedford 2014
* MIT
*/
/*
*
* Usage:
* require(['css!./mycssFile']);
*
* Tested and working in (up to latest versions as of March 2013):
* Android
* iOS 6
* IE 6 - 10
* Chome 3 - 26
* Firefox 3.5 - 19
* Opera 10 - 12
*
* browserling.com used for virtual testing environment
*
* Credit to B Cavalier & J Hann for the IE 6 - 9 method,
* refined with help from Martin Cermak
*
* Sources that helped along the way:
* - https://developer.mozilla.org/en-US/docs/Browser_detection_using_the_user_agent
* - http://www.phpied.com/when-is-a-stylesheet-really-loaded/
* - https://github.com/cujojs/curl/blob/master/src/curl/plugin/css.js
*
*/
define(
'css',
[],
function() {
//>>excludeStart('excludeRequireCss', pragmas.excludeRequireCss)
if (typeof window == 'undefined')
return { load: function(n, r, load){ load() } };
var head = document.getElementsByTagName('head')[0];
var engine = window.navigator.userAgent.match(/Trident\/([^ ;]*)|AppleWebKit\/([^ ;]*)|Opera\/([^ ;]*)|rv\:([^ ;]*)(.*?)Gecko\/([^ ;]*)|MSIE\s([^ ;]*)|AndroidWebKit\/([^ ;]*)/) || 0;
// use <style> @import load method (IE < 9, Firefox < 18)
var useImportLoad = false;
// set to false for explicit <link> load checking when onload doesn't work perfectly (webkit)
var useOnload = true;
// trident / msie
if (engine[1] || engine[7])
useImportLoad = parseInt(engine[1]) < 6 || parseInt(engine[7]) <= 9;
// webkit
else if (engine[2] || engine[8])
useOnload = false;
// gecko
else if (engine[4])
useImportLoad = parseInt(engine[4]) < 18;
//>>excludeEnd('excludeRequireCss')
//main api object
var cssAPI = {};
//>>excludeStart('excludeRequireCss', pragmas.excludeRequireCss)
cssAPI.pluginBuilder = './css-builder';
// <style> @import load method
var curStyle, curSheet;
var createStyle = function () {
curStyle = document.createElement('style');
head.appendChild(curStyle);
curSheet = curStyle.styleSheet || curStyle.sheet;
}
var ieCnt = 0;
var ieLoads = [];
var ieCurCallback;
var createIeLoad = function(url) {
curSheet.addImport(url);
curStyle.onload = function(){ processIeLoad() };
ieCnt++;
if (ieCnt == 31) {
createStyle();
ieCnt = 0;
}
}
var processIeLoad = function() {
ieCurCallback();
var nextLoad = ieLoads.shift();
if (!nextLoad) {
ieCurCallback = null;
return;
}
ieCurCallback = nextLoad[1];
createIeLoad(nextLoad[0]);
}
var importLoad = function(url, callback) {
if (!curSheet || !curSheet.addImport)
createStyle();
if (curSheet && curSheet.addImport) {
// old IE
if (ieCurCallback) {
ieLoads.push([url, callback]);
}
else {
createIeLoad(url);
ieCurCallback = callback;
}
}
else {
// old Firefox
curStyle.textContent = '@import "' + url + '";';
var loadInterval = setInterval(function() {
try {
curStyle.sheet.cssRules;
clearInterval(loadInterval);
callback();
} catch(e) {}
}, 10);
}
}
// <link> load method
var linkLoad = function(url, callback) {
var link = document.createElement('link');
link.type = 'text/css';
link.rel = 'stylesheet';
if (useOnload)
link.onload = function() {
link.onload = function() {};
// for style dimensions queries, a short delay can still be necessary
setTimeout(callback, 7);
}
else
var loadInterval = setInterval(function() {
for (var i = 0; i < document.styleSheets.length; i++) {
var sheet = document.styleSheets[i];
if (sheet.href == link.href) {
clearInterval(loadInterval);
return callback();
}
}
}, 10);
link.href = url;
head.appendChild(link);
}
//>>excludeEnd('excludeRequireCss')
cssAPI.normalize = function(name, normalize) {
if (name.substr(name.length - 4, 4) == '.css')
name = name.substr(0, name.length - 4);
return normalize(name);
}
//>>excludeStart('excludeRequireCss', pragmas.excludeRequireCss)
cssAPI.load = function(cssId, req, load, config) {
(useImportLoad ? importLoad : linkLoad)(req.toUrl(cssId + '.css'), load);
}
//>>excludeEnd('excludeRequireCss')
return cssAPI;
});
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