1 | /* |
---|
2 | * FCKeditor - The text editor for Internet - http://www.fckeditor.net |
---|
3 | * Copyright (C) 2003-2007 Frederico Caldeira Knabben |
---|
4 | * |
---|
5 | * == BEGIN LICENSE == |
---|
6 | * |
---|
7 | * Licensed under the terms of any of the following licenses at your |
---|
8 | * choice: |
---|
9 | * |
---|
10 | * - GNU General Public License Version 2 or later (the "GPL") |
---|
11 | * http://www.gnu.org/licenses/gpl.html |
---|
12 | * |
---|
13 | * - GNU Lesser General Public License Version 2.1 or later (the "LGPL") |
---|
14 | * http://www.gnu.org/licenses/lgpl.html |
---|
15 | * |
---|
16 | * - Mozilla Public License Version 1.1 or later (the "MPL") |
---|
17 | * http://www.mozilla.org/MPL/MPL-1.1.html |
---|
18 | * |
---|
19 | * == END LICENSE == |
---|
20 | * |
---|
21 | * Preload a list of images, firing an event when complete. |
---|
22 | */ |
---|
23 | |
---|
24 | var FCKImagePreloader = function() |
---|
25 | { |
---|
26 | this._Images = new Array() ; |
---|
27 | } |
---|
28 | |
---|
29 | FCKImagePreloader.prototype = |
---|
30 | { |
---|
31 | AddImages : function( images ) |
---|
32 | { |
---|
33 | if ( typeof( images ) == 'string' ) |
---|
34 | images = images.split( ';' ) ; |
---|
35 | |
---|
36 | this._Images = this._Images.concat( images ) ; |
---|
37 | }, |
---|
38 | |
---|
39 | Start : function() |
---|
40 | { |
---|
41 | var aImages = this._Images ; |
---|
42 | this._PreloadCount = aImages.length ; |
---|
43 | |
---|
44 | for ( var i = 0 ; i < aImages.length ; i++ ) |
---|
45 | { |
---|
46 | var eImg = document.createElement( 'img' ) ; |
---|
47 | eImg.onload = eImg.onerror = _FCKImagePreloader_OnImage ; |
---|
48 | eImg._FCKImagePreloader = this ; |
---|
49 | eImg.src = aImages[i] ; |
---|
50 | |
---|
51 | _FCKImagePreloader_ImageCache.push( eImg ) ; |
---|
52 | } |
---|
53 | } |
---|
54 | }; |
---|
55 | |
---|
56 | // All preloaded images must be placed in a global array, otherwise the preload |
---|
57 | // magic will not happen. |
---|
58 | var _FCKImagePreloader_ImageCache = new Array() ; |
---|
59 | |
---|
60 | function _FCKImagePreloader_OnImage() |
---|
61 | { |
---|
62 | var oImagePreloader = this._FCKImagePreloader ; |
---|
63 | |
---|
64 | if ( (--oImagePreloader._PreloadCount) == 0 && oImagePreloader.OnComplete ) |
---|
65 | oImagePreloader.OnComplete() ; |
---|
66 | |
---|
67 | this._FCKImagePreloader = null ; |
---|
68 | } |
---|