세계의끝과 플래시 원더랜드

package 
{
	public interface ICommand
	{
		function execute():void
	}
}

package 
{
	public class CeilingFanOffCommand implements ICommand
	{
		private var ceilingFan:CeilingFan;
 
		public function CeilingFanOffCommand( $ceilingFan:CeilingFan ) 
		{
			this.ceilingFan = $ceilingFan
		}
 
		public function execute():void
		{
			ceilingFan.off();
		}
	}
}

package 
{
	import flash.display.Sprite;
	import flash.events.*;
 
	public class CeilingFan extends Sprite
	{
		private var location:String = "";
		private var speed:int;
		public static const HIGH:int = 3;
		public static const MEDIUM:int = 2;
		public static const LOW:int = 1;
		public static const OFF:int = 0;
 
		public function CeilingFan( $location:String ):void
		{
			this.fan.cacheAsBitmap = true;
			this.location = $location;
			this.speed = OFF;
			this.addEventListener( Event.ENTER_FRAME, onEnterFrameHandler );
		}
 
		public function high():void
		{
			speed = HIGH;
			outputText();
		}
		public function medium():void
		{
			speed = MEDIUM;
			outputText();
		}
		public function low():void
		{
			speed = LOW;
			outputText();
		}
		public function off():void
		{
			speed = OFF;
			outputText();
		}
		public function getSpeed():int
		{
			return speed;
		}
		private function outputText():void
		{
			txtSpeed.text = location + " : Fan Speed - " + speed;
		}
		private function onEnterFrameHandler( e:Event ):void 
		{
			this.fan.rotation += speed;
		}
	}
}

package 
{
	import fl.controls.Button;
	import flash.display.Sprite;
	import flash.events.*;
	import flash.text.*;
 
	public class RemoteControlWithHistory extends Sprite 
	{
		private var arrCommands:Array = new Array();;
		private var commandHistory:Array = new Array();
		private var historyIndex:int;
		private var txtHistory:TextField = new TextField();
 
		public function RemoteControlWithHistory( $ceilingFan:CeilingFan, $numberOfbuttons:uint = 4 )
		{
			var noCommand:ICommand = new NoCommand();
			for ( var i:int = 0; i < $numberOfbuttons; i++ )
			{
				arrCommands[ i ] = noCommand;
			}
 
			var ceilingFanHigh:CeilingFanHighCommand = new CeilingFanHighCommand( $ceilingFan );
			var ceilingFanMedium:CeilingFanMediumCommand = new CeilingFanMediumCommand( $ceilingFan );
			var ceilingFanLow:CeilingFanLowCommand = new CeilingFanLowCommand( $ceilingFan );
			var ceilingFanOff:CeilingFanOffCommand = new CeilingFanOffCommand( $ceilingFan );
 
			setCommand( 0, ceilingFanOff );
			setCommand( 1, ceilingFanLow );
			setCommand( 2, ceilingFanMedium );
			setCommand( 3, ceilingFanHigh );
 
			init( $numberOfbuttons );
		}
 
		private function init( $numberOfbuttons:uint ):void
		{
			this.x = this.y = 10;
 
			for ( var i:uint = 0; i < $numberOfbuttons; i++ )
			{
				var button:Button = new Button();
				button.addEventListener( MouseEvent.CLICK, buttonWasPushed );
				button.label = i.toString();
				button.height = 30;
				button.y = i * ( button.height + 5 );
				addChild( button );
			}
 
			var undoButton:Button = new Button();
			var redoButton:Button = new Button();
			var historylistButton:Button = new Button()
			undoButton.y = 200;
			redoButton.y = 230;
			historylistButton.y = 260;
			undoButton.label = "undo";
			redoButton.label = "redo";
			historylistButton.label = "view history";
 
			undoButton.addEventListener( MouseEvent.CLICK, undoButtonWasPushed )
			redoButton.addEventListener( MouseEvent.CLICK, redoButtonWasPushed )
			historylistButton.addEventListener( MouseEvent.CLICK, historyView );
 
			addChild( undoButton );
			addChild( redoButton );
			addChild( historylistButton );
 
			txtHistory.width = 300;
			txtHistory.height = 300;
			txtHistory.x = historylistButton.width;
			txtHistory.y = historylistButton.y;
			addChild( txtHistory );
 
			//선풍기의 초기값은 정지상태
			this.buttonWasPushed( null );
		}
 
		public function setCommand( $slot:int, $command:ICommand ):void
		{
			arrCommands[ $slot ] = $command;
		}
 
		public function buttonWasPushed( $e:MouseEvent = null ):void
		{
			var slot:uint = ( $e == null ) ? 0 : uint( $e.target.label );
			arrCommands[ slot ].execute();
			stackProcess( arrCommands[ slot ] );
		}
 
		private function stackProcess( $command:ICommand ):void
		{
			//historyIndex가 undo 중일때 undo나 redo가 아닌 새로운 command가 들어올경우 redo 부분이 없어지도록 배열길이를 조정
			commandHistory.length = historyIndex;
			commandHistory.push( $command );
			historyIndex = commandHistory.length;
		}
 
		public function undoButtonWasPushed( $e:MouseEvent = null ):void
		{
			if ( historyIndex > 1 )
			{
				commandHistory[ ( --historyIndex - 1 ) ].execute();
			}
			else
			{
				trace( "No more Undo" )
			}
		}
 
		public function redoButtonWasPushed( $e:MouseEvent = null ):void
		{
			if ( historyIndex < commandHistory.length )
			{
				commandHistory[ historyIndex++ ].execute();
			}
			else
			{
				trace( "No more Redo" )
			}
		}
 
		public function getCommandList():String
		{
			var str:String = "\n------ Remote Control -------"
			for ( var i:int = 0; i < arrCommands.length; i++)
			{
				str += "\n[slot " + i + "] " + arrCommands[i] 
			}
			str += "\n[undo] " + commandHistory
			return str
		}
 
		private function historyView( e:MouseEvent ):void 
		{
			txtHistory.text = "******History list******"
			for each( var element:Object in commandHistory )
			{
				txtHistory.appendText( ( "\n" + element.toString() ) );
			}
		}
	}
}

package 
{
	import flash.display.Sprite;
 
	public class Main extends Sprite 
	{
		public function Main():void 
		{
			var ceilingFan:CeilingFan = new CeilingFan( "Living Room" )
			ceilingFan.x = 400;
			ceilingFan.y = 200;
			addChild( ceilingFan );
 
			var remoteControl:RemoteControlWithHistory = new RemoteControlWithHistory( ceilingFan, 4 );
			addChild( remoteControl );
 
		}
	}
}