wolnelektury/media/js/jquery.eventdelegation.js

   1 /*
   2  * jQuery Event Delegation Plugin - jquery.eventdelegation.js
   3  * Fast flexible event handling
   4  *
   5  * January 2008 - Randy Morey (http://dev.distilldesign.com/)
   6  */
   7
   8 (function ($) {
   9         /* setup list of allowed events for event delegation
  10          * only events that bubble are appropriate
  11          */
  12         var allowed = {};
  13         $.each([
  14                 'click',
  15                 'dblclick',
  16                 'mousedown',
  17                 'mouseup',
  18                 'mousemove',
  19                 'mouseover',
  20                 'mouseout',
  21                 'keydown',
  22                 'keypress',
  23                 'keyup'
  24                 ], function(i, eventName) {
  25                         allowed[eventName] = true;
  26         });
  27
  28         $.fn.extend({
  29                 delegate: function (event, selector, f) {
  30                         return $(this).each(function () {
  31                                 if (allowed[event])
  32                                         $(this).bind(event, function (e) {
  33                                                 var el = $(e.target),
  34                                                         result = false;
  35
  36                                                 while (!$(el).is('body')) {
  37                                                         if ($(el).is(selector)) {
  38                                                                 result = f.apply($(el)[0], [e]);
  39                                                                 if (result === false)
  40                                                                         e.preventDefault();
  41                                                                 return;
  42                                                         }
  43
  44                                                         el = $(el).parent();
  45                                                 }
  46                                         });
  47                         });
  48                 },
  49                 undelegate: function (event) {
  50                         return $(this).each(function () {
  51                                 $(this).unbind(event);
  52                         });
  53                 }
  54         });
  55 })(jQuery);