Registry.as

   1 package  {
   2         import flash.events.Event;
   3         import flash.utils.*;
   4         import flash.text.engine.EastAsianJustifier;
   5
   6         public class Registry extends PollableBaseRegistry {
   7
   8                 private var subRegistries:Array;
   9                 private var numRegistriesPolled:int;
  10                 private var refreshRate:int;
  11
  12                 public function Registry(refreshRate:int) {
  13                         this.subRegistries = [];
  14                         this.numRegistriesPolled = 0;
  15                         this.refreshRate = refreshRate;
  16
  17                         setInterval(this.poll, this.refreshRate);
  18                 }
  19
  20                 public function addSubRegistry(subRegistry:IPollableRegistry, registryCallback:Function = null) {
  21                         this.subRegistries.push(subRegistry);
  22                         subRegistry.addEventListener(subRegistry.getUpdateEventType(), this.updated);
  23                         subRegistry.addEventListener(subRegistry..getCycleCompleteEventType(), this.cycleComplete);
  24                 }
  25
  26                 private function poll() {
  27                         // This acts as a lock. After all the registries are polled, it resets to 0
  28                         // so we know it's safe to poll again.
  29                         if(this.numRegistriesPolled === 0) {
  30                                 for each(var subRegistry:Object in this.subRegistries) {
  31                                         this.numRegistriesPolled++;
  32                                         var fn:Function = subRegistry.getPollableFunction();
  33                                         fn();
  34                                 }
  35                         }
  36                 }
  37
  38                 private function updated(e:PollEvent) {
  39                         trace(e.pollTarget.getLastUpdated());
  40                 }
  41
  42                 private function cycleComplete(e:PollEvent) {
  43                         if(this.numRegistriesPolled == this.subRegistries.length) {
  44                                 //trace("polling complete");
  45                                 this.numRegistriesPolled = 0;
  46                         }
  47
  48                 }
  49         }
  50
  51 }