gistfile1.as

	public class EpisodeItemViewPresentationModel extends EventDispatcher
	{

		//-----------------------------------------------
		//    Statics
		//-----------------------------------------------
		
		public static const PUBLISHED:String = "published";
		public static const UPLOADING:String = "uploading";
		public static const PENDING:String = "pending"; 

		//-----------------------------------------------
		//    Getters & Setters
		//-----------------------------------------------
		
		private var _episode:Episode;
		private var changeWatcher:ChangeWatcher;
		
		[Bindable(Event="stateChanged")] public function get episode():Episode
		{
			return _episode;	
		}
		
		public function set episode(value:Episode):void
		{
			_episode = value;		
			
			// watch for changes on the id property of the episode 			
			changeWatcher = ChangeWatcher.watch(value, "id", episodeIdChangeListener, false, true); 										
	
			dispatchEvent( new Event("stateChanged") );
		}
		
		// ~~~~~~~~~~~~~~~~~~ state ~~~~~~~~~~~~~~~~~~~~~
		
		private var _state:String = UPLOADING;
		
		[Bindable(Event="stateChanged")] public function get state():String
		{
			if ( episode.approved ) {
				return PUBLISHED;
			} else {
				if ( episode.video_url ) {
					return PENDING;
				}
			}
			
			return _state;
		}

		//-----------------------------------------------
		//    Constructor
		//-----------------------------------------------
		
		private var dispatcher:IEventDispatcher;
		
		public function EpisodeItemViewPresentationModel(dispatcher:IEventDispatcher)
		{
			this.dispatcher = dispatcher;
		}
		
		//-----------------------------------------------
		//    Public
		//-----------------------------------------------
		
		public function cancel():void
		{
			dispatcher.dispatchEvent( new EpisodeEvent( EpisodeEvent.CANCEL_UPLOAD ) );
			
			_state = PENDING;
			dispatchEvent( new Event("stateChanged") );
		}
		
		//-----------------------------------------------
		//    Private
		//-----------------------------------------------
		
		//-----------------------------------------------
		//    Event Handlers
		//-----------------------------------------------
		
		private function episodeIdChangeListener(e:PropertyChangeEvent):void
		{
			dispatchEvent( new Event("stateChanged") );
		}
	}