/**
 * ZStage
 * Message Broadcaster for stage resizing
 *
 * @author		Zeh Fernando
 * @version		1.0.0 - 2/jul/2006 - First version
 */

/* Usage:

zeh.extensions.ZStage.addListener(this);

this.onResize = function() {
	trace ("onResize");
};
this.onStartResize = function() {
	trace ("onStartResize");
};
this.onStopResize = function() {
	trace ("onStopResize");
};


*/
class zeh.extensions.ZStage extends zeh.events.BasicListener {

	private static var _initialized:Boolean;				// Whether or not it has been initialized

	private static var iid:Number;						// Interval id
	private static var DEFAULT_DELAY:Number = 100;		// Default time to wait for resizing to stop

	/**
	 * There's no constructor.
	 */
	public function StageResizer () {
		trace ("This is an static class and should not be instantiated.")
	}

	/**
	 * Initializes the class
	 */
	private static function initialize(): Void {
		Stage.addListener(ZStage);
		_initialized = true;
		reset();
	}

	private static function reset(): Void {
		if (iid != null) clearInterval(iid);
		iid = null;
	}

	public static function addListener(p_obj:Object): Void {
		if (!_initialized) initialize();
		// super.addListener(p_obj); ??? doesn't work...
		if (_listeners == undefined) _listeners = new Array();
		_listeners.push(p_obj);
	}

	public static function onResize(): Void {
		if (iid == undefined) broadcastMessage("onStartResize");
		clearInterval(iid);
		iid = setInterval(ZStage.onStopResizing, 100);
		broadcastMessage("onResize");
	}

	public static function onStopResizing(): Void {
		broadcastMessage("onStopResize");
		reset();	
	}

}