Super Flex

package myvocal.utils.input
{
	import flash.events.EventDispatcher;
	import flash.events.KeyboardEvent;
	import flash.ui.Keyboard;
 
	import mx.core.Application;
 
	/**
	 * it's a singleton object which is used to handle global hot keys.
	 * 
	 * capture parse of event flow is used to catch keydown
	 * 
	 */ 
	public class CHotKeys extends EventDispatcher
	{
		public function CHotKeys()
		{
			//TODO: implement function
			super(null);
 
			Application.application.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown, true);
			//Application.application.setFocus();
		}
 
		private static var owner:CHotKeys;
 
		public static function getInstance():CHotKeys
		{
			if(owner == null)
			{
				owner = new CHotKeys();
			}
			return owner;
		}
 
		///////////////////////////////////////////
		/*
		private var help_func:Function;
		private var record_func:Function;
		private var play_func:Function;
		private var stop_func:Function;
		private var rewind_func:Function;
		*/
		public static const HELP_HK:String = "help_hk";
		public static const RECORD_HK:String = "record_hk";
		public static const PLAY_HK:String = "play_hk";
		public static const STOP_HK:String = "stop_hk";
		public static const REWIND_HK:String = "rewind_hk";
 
 
		private var _hotkeyTemp:IHotKeyTemplate;
 
		/**
		 * there is only one IHotKeyTemplate object that is activated
		 */ 
		public function activate(ihotkey:IHotKeyTemplate):void
		{
			_hotkeyTemp = ihotkey;
		}
 
		/**
		 * define hot keys and handler them
		 */ 
		private function onKeyDown(event:KeyboardEvent):void
		{
			trace(event.keyCode);
			//event.preventDefault();
			switch(event.keyCode)
			{
				case Keyboard.F1:
					//help
					if(_hotkeyTemp != null)
					{
						_hotkeyTemp.hk_help_func();
					}
					event.preventDefault();
					break;
				case Keyboard.F2:
					//record or stop record
					if(_hotkeyTemp != null)
					{
						_hotkeyTemp.hk_record_func();
					}
					event.preventDefault();
					break;
				case Keyboard.F3:
					//play or pause
					if(_hotkeyTemp != null)
					{
						_hotkeyTemp.hk_play_func();
					}
					event.preventDefault();
					break;
				case Keyboard.F4:
					//stop
					if(_hotkeyTemp != null)
					{
						_hotkeyTemp.hk_stop_func();
					}
					event.preventDefault();
					break;
				case Keyboard.F5:
					//rewind
					if(_hotkeyTemp != null)
					{
						_hotkeyTemp.hk_rewind_func();
					}
					event.preventDefault();
					break;
			}
		}
 
	}
}