require-css.js
4.78 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
/*
* 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;
});