/**
 * @fileOverview jqueryui插件封装
 * @author：Hbomb(zhouqq@yoho.cn)
 * @date：2012-07-09
 */
define('lib/util/jquery.imagesLoaded', [ "jquery"], function(require)
{
  var $ = require("jquery");
  // ======================= imagesLoaded Plugin ===============================
  /*!
   * jQuery imagesLoaded plugin v1.1.0
   * http://github.com/desandro/imagesloaded
   *
   * MIT License. by Paul Irish et al.
   */


  // $('#my-container').imagesLoaded(myFunction)
  // or
  // $('img').imagesLoaded(myFunction)

  // execute a callback when all images have loaded.
  // needed because .load() doesn't work on cached images

  // callback function gets image collection as argument
  //  `this` is the container

  $.fn.imagesLoaded = function( callback ) {
    var $this = this,
        $images = $this.find('img').add( $this.filter('img') ),
        len = $images.length,
        blank = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==',
        loaded = [];

    function triggerCallback() {
      callback.call( $this, $images );
    }

    function imgLoaded( event ) {
      var img = event.target;
      if ( img.src !== blank && $.inArray( img, loaded ) === -1 ){
        loaded.push( img );
        if ( --len <= 0 ){
          setTimeout( triggerCallback );
          $images.unbind( '.imagesLoaded', imgLoaded );
        }
      }
    }

    // if no images, trigger immediately
    if ( !len ) {
      triggerCallback();
    }

    $images.bind( 'load.imagesLoaded error.imagesLoaded',  imgLoaded ).each( function() {
      // cached images don't fire load sometimes, so we reset src.
      var src = this.src;
      // webkit hack from http://groups.google.com/group/jquery-dev/browse_thread/thread/eee6ab7b2da50e1f
      // data uri bypasses webkit log warning (thx doug jones)
      this.src = blank;
      this.src = src;
    });

    return $this;
  };
});