manifold/static/js/buffer.js

   1 /* Buffered DOM updates */
   2 var Buffer = Class.extend({
   3
   4     init: function(callback, callback_this) {
   5         this._callback = callback;
   6         this._callback_this = callback_this;
   7         this._timerid  = null;
   8         this._num_elements = 0;
   9         this._elements = Array();
  10
  11         this._interval = 1000;
  12
  13         return this;
  14     },
  15
  16     add: function(element)
  17     {
  18         this._elements.push(element);
  19         if (this._num_elements == 0) {
  20             this._timerid = setInterval(
  21                 (function(self) {         //Self-executing func which takes 'this' as self
  22                     return function() {   //Return a function in the context of 'self'
  23                         messages.debug("running callback");
  24                         clearInterval(self._timerid);
  25                         self._callback.apply(self._callback_this);
  26                     }
  27                 })(this),
  28                 this._interval);
  29         }
  30         this._num_elements++;
  31     },
  32
  33     get: function() {
  34         var elements = this._elements;
  35         this._elements = Array();
  36         this._num_elements = 0;
  37         return elements;
  38     },
  39
  40 });