[903] | 1 | /* |
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| 2 | * FCKeditor - The text editor for Internet - http://www.fckeditor.net |
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| 3 | * Copyright (C) 2003-2007 Frederico Caldeira Knabben |
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| 4 | * |
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| 5 | * == BEGIN LICENSE == |
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| 6 | * |
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| 7 | * Licensed under the terms of any of the following licenses at your |
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| 8 | * choice: |
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| 9 | * |
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| 10 | * - GNU General Public License Version 2 or later (the "GPL") |
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| 11 | * http://www.gnu.org/licenses/gpl.html |
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| 12 | * |
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| 13 | * - GNU Lesser General Public License Version 2.1 or later (the "LGPL") |
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| 14 | * http://www.gnu.org/licenses/lgpl.html |
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| 15 | * |
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| 16 | * - Mozilla Public License Version 1.1 or later (the "MPL") |
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| 17 | * http://www.mozilla.org/MPL/MPL-1.1.html |
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| 18 | * |
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| 19 | * == END LICENSE == |
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| 20 | * |
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| 21 | * Preload a list of images, firing an event when complete. |
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| 22 | */ |
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| 23 | |
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| 24 | var FCKImagePreloader = function() |
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| 25 | { |
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| 26 | this._Images = new Array() ; |
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| 27 | } |
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| 28 | |
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| 29 | FCKImagePreloader.prototype = |
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| 30 | { |
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| 31 | AddImages : function( images ) |
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| 32 | { |
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| 33 | if ( typeof( images ) == 'string' ) |
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| 34 | images = images.split( ';' ) ; |
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| 35 | |
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| 36 | this._Images = this._Images.concat( images ) ; |
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| 37 | }, |
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| 38 | |
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| 39 | Start : function() |
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| 40 | { |
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| 41 | var aImages = this._Images ; |
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| 42 | this._PreloadCount = aImages.length ; |
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| 43 | |
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| 44 | for ( var i = 0 ; i < aImages.length ; i++ ) |
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| 45 | { |
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| 46 | var eImg = document.createElement( 'img' ) ; |
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| 47 | eImg.onload = eImg.onerror = _FCKImagePreloader_OnImage ; |
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| 48 | eImg._FCKImagePreloader = this ; |
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| 49 | eImg.src = aImages[i] ; |
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| 50 | |
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| 51 | _FCKImagePreloader_ImageCache.push( eImg ) ; |
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| 52 | } |
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| 53 | } |
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| 54 | }; |
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| 55 | |
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| 56 | // All preloaded images must be placed in a global array, otherwise the preload |
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| 57 | // magic will not happen. |
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| 58 | var _FCKImagePreloader_ImageCache = new Array() ; |
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| 59 | |
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| 60 | function _FCKImagePreloader_OnImage() |
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| 61 | { |
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| 62 | var oImagePreloader = this._FCKImagePreloader ; |
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| 63 | |
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| 64 | if ( (--oImagePreloader._PreloadCount) == 0 && oImagePreloader.OnComplete ) |
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| 65 | oImagePreloader.OnComplete() ; |
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| 66 | |
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| 67 | this._FCKImagePreloader = null ; |
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| 68 | } |
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