[Summary view] [Print] [Text view]

   1  /*

   2  Copyright (c) 2003-2010, CKSource - Frederico Knabben. All rights reserved.

   3  For licensing, see LICENSE.html or http://ckeditor.com/license

   4  */
   5  
   6  (function()
   7  {
   8      var loaded = {};
   9  
  10      var loadImage = function( image, callback )
  11      {
  12          var doCallback = function()
  13              {
  14                  img.removeAllListeners();
  15                  loaded[ image ] = 1;
  16                  callback();
  17              };
  18  
  19          var img = new CKEDITOR.dom.element( 'img' );
  20          img.on( 'load', doCallback );
  21          img.on( 'error', doCallback );
  22          img.setAttribute( 'src', image );
  23      };
  24  
  25      /**

  26       * Load images into the browser cache.

  27       * @namespace

  28       * @example

  29       */
  30       CKEDITOR.imageCacher =
  31      {
  32          /**

  33           * Loads one or more images.

  34           * @param {Array} images The URLs for the images to be loaded.

  35           * @param {Function} callback The function to be called once all images

  36           *        are loaded.

  37           */
  38          load : function( images, callback )
  39          {
  40              var pendingCount = images.length;
  41  
  42              var checkPending = function()
  43              {
  44                  if ( --pendingCount === 0 )
  45                      callback();
  46              };
  47  
  48              for ( var i = 0 ; i < images.length ; i++ )
  49              {
  50                  var image = images[ i ];
  51  
  52                  if ( loaded[ image ] )
  53                      checkPending();
  54                  else
  55                      loadImage( image, checkPending );
  56              }
  57          }
  58      };
  59  })();