EventDispatcher.as

package flash.events {
  public class EventDispatcher {
    // This would actually dispatch event to captured/uncaptured listeners...
    // Assume this and the rest of event dispatcher behave as you'd expect :)
    private function _dispatch(event, captured:Boolean = false):void {
      var listener:Function;
      event.currentTarget = this;
      if (captured) for each (listener in capturedListeners[event.type]) {
        if (event.stoppedImmediatePropagation) break;
        listener(event);
      }
      else for each (listener in uncapturedListeners[event.type]) {
        if (event.stoppedImmediatePropagation) break;
        listener(event);
      }
    }
    
    // event.eventPhase is CAPTURING at construction
    // This demonstrates the flow of capturing/target/bubbling
    public function dispatchEvent(event:Event):void {
      if (event.target == null) event.target = this;
      if (event.eventPhase == EventPhase.BUBBLING_PHASE) {
        _dispatch(event);
        if (parent) parent.dispatchEvent(event);
        return;
      }
      if (event.eventPhase == EventPhase.CAPTURING_PHASE) {
        if (parent) parent.dispatchEvent(event);
        if (event.target != this) {
          _dispatch(event, true);
          return;
        }
      }
      if (event.target == this) {
        if (event.stoppedPropagation) return;
        event.eventPhase = EventPhase.AT_TARGET;
        _dispatch(event);
        if (event.stoppedPropagation) return;
        if (event.bubbles) {
          event.eventPhase = EventPhase.BUBBLING_PHASE;
          if (parent) parent.dispatchEvent(event);
        }
      }
    }
  }
}