Mouse return focus detector

gistfile1.txt

import com.alanmacdougall.underscore._;

// and then, after View is added to stage...

stage.addEventListener(Event.MOUSE_LEAVE, function handleMouseLeave(event:Event):void {
	stage.removeEventListener(Event.MOUSE_LEAVE, handleMouseLeave);
	stage.addEventListener(MouseEvent.MOUSE_OVER, function handleMouseReturn(event:MouseEvent):void {
		stage.removeEventListener(MouseEvent.MOUSE_LEAVE, handleMouseReturn);
		// wait 500ms to let other handlers sort themselves out, I guess
		_(function():void {
			trace("Mouse has returned; current keyboard-focused DisplayObject is " + stage.focus);
		}).delay(500);
	});
});