js/ajatus.renderer.js

   1 (function($){
   2     $.ajatus = $.ajatus || {};
   3
   4     $.ajatus.renderer_defaults = {
   5         tick_limit: 20,
   6         max_item_before_pool: 40
   7     };
   8
   9     $.ajatus.renderer = function(settings) {
  10         this.settings = $.extend($.ajatus.renderer_defaults, (settings || {}));
  11         this.render_lock = false;
  12             this.items = [];
  13             this.done_items = [];
  14         };
  15         $.extend($.ajatus.renderer.prototype, {
  16             add_item: function(callback, args) {
  17             var item = {
  18                 callback: callback,
  19                 args: args || []
  20             };
  21                 this.items.push(item);
  22                 $.ajatus.events.lock_pool.increase();
  23
  24                 if (! this.render_lock) {
  25                     this.start();
  26                 }
  27             },
  28
  29             start: function() {
  30                 this._create_lock();
  31             },
  32
  33             _on_tick: function() {
  34                 var _self = this;
  35                 if (this.items.length == 0)
  36                 {
  37                     $.ajatus.events.lock_pool.count = 0;
  38                     return true;
  39                 }
  40                 this.items = $.grep(this.items, function(n, i){
  41                     if (i < _self.settings.tick_limit)
  42                     {
  43                         var functionToCall = eval(n.callback);
  44
  45                     if (functionToCall.apply(functionToCall, n.args)) {
  46                         _self.done_items.push(i);
  47                         $.ajatus.events.lock_pool.decrease();
  48                     }
  49                     } else {
  50                         return true;
  51                     }
  52                 });
  53             },
  54
  55             _create_lock: function() {
  56                 var _self = this;
  57             _self.render_lock = new $.ajatus.events.lock({
  58                 disable_application: false,
  59                 watch: {
  60                     validate: function(){
  61                         _self._on_tick();
  62                         return $.ajatus.events.lock_pool.count == 0;
  63                     },
  64                     interval: 400,
  65                     safety_runs: 2
  66                 },
  67                 on_release: function(){_self._lock_finished();}
  68             });
  69             },
  70
  71             _lock_finished: function() {
  72             }
  73         });
  74
  75 })(jQuery);