Tweener Text Swap Animation

package
{
	import caurina.transitions.Tweener;
	import caurina.transitions.properties.TextShortcuts;
	TextShortcuts.init();
 
	import flash.display.Sprite;
	import flash.events.MouseEvent;
	import flash.text.TextField;
	import flash.text.TextFormat;
	import flash.text.TextFormatAlign;
	import flash.text.AntiAliasType;
 
	import fl.controls.Button;
 
	public class TweenerSwap extends Sprite
	{
		private var btn1:Button;
		private var btn2:Button;
		private var btn3:Button;
		private var squContainer:Sprite;
		private var square:Sprite;
		private var tF:TextField;
 
		private var textStr:String;
		private var squWidth:Number;
		private var squHeight:Number;
 
		public function TweenerSwap()
		{
			init();
			format();
		}
 
		private function init():void
		{
			squContainer = new Sprite();
			addChild(squContainer);
			squContainer.alpha = 0;
 
			square = new Sprite();
			squContainer.addChild(square);
			square.graphics.beginFill(0xFF0000, 1);
			square.graphics.drawRect(0,0,100,100);
			square.graphics.endFill();
 
			var fmt:TextFormat = new TextFormat();
			fmt.font="Arial";
			fmt.size=12;
			fmt.color= 0xCCCCCC;
			fmt.leading=4;
			fmt.align = TextFormatAlign.CENTER;
 
			tF = new TextField();
			tF.multiline=true;
			tF.wordWrap=true;
			tF.width=300;
			tF.selectable=false;
			tF.defaultTextFormat=fmt;
			tF.antiAliasType = AntiAliasType.ADVANCED;
			tF.mouseEnabled = false;
			squContainer.addChild(tF);
 
			var container:Sprite = new Sprite();
			addChild(container);
			container.addEventListener(MouseEvent.MOUSE_DOWN, swapText, false, 0, true);
 
			btn1 = new Button();
			btn1.label = "String 1";
			container.addChild(btn1).name = "btn1";
 
			btn2 = new Button();
			btn2.label = "String 2";
			container.addChild(btn2).name = "btn2";
 
			btn3 = new Button();
			btn3.label = "String 3";
			container.addChild(btn3).name = "btn3";
		}
 
		private function format():void
		{
			btn1.y = 0;
			btn2.y = 24;
			btn3.y = 48;
 
			squContainer.x = stage.stageWidth/2;
		}
 
		private function swapText(e:MouseEvent):void
		{
			switch(e.target.name)
			{
				case "btn3":
				textStr = "As we must account for every idle word, so must we account for every idle silence.";
				squWidth = 180;
				squHeight = 60;
				break;
				case "btn2":
				textStr = "If you would not be forgotten as soon as you are dead, either write something worth reading or do things worth writing.";
				squWidth = 350;
				squHeight = 40;
				break;
				case "btn1":
				textStr = "A great empire, like a great cake, is most easily diminished at the edges.";
				squWidth = 410;
				squHeight = 20;
				break;
				default:
				break;
			}
 
			Tweener.addTween(squContainer, {x:stage.stageWidth/2 - squWidth/2 + 50, y:stage.stageHeight/2 - squHeight/2, alpha:1, time:1, delay:0, transition:"easeInOutQuart"});
			Tweener.addTween(square, {width:squWidth, height:squHeight, time:1, delay:0, transition:"easeInOutQuart"});
			Tweener.addTween(tF, {_text:textStr, width:squWidth, height:squHeight, time:1, delay:0, transition:"easeInOutQuart"});
 
		}
	}
}