ActionScript Live Debug Class

I wanted to have a way of tracking object attributes in real time within the Flash movie. As a test case, I wanted to track the position of the mouse using a dynamic text box. Here is the result:

Edit: This has been updated to include stage dimensions and to update on stage resize.

package {

	import flash.display.*;
	import flash.events.*;
	import flash.text.*;
	import flash.utils.Timer;

	[SWF(width="800", height="600", backgroundColor="#ffffff", frameRate="30")]

	public class DebugData extends Sprite {

		// Instantiate stage variables
		public var sw:Number = stage.stageWidth;
		public var sh:Number = stage.stageHeight;

		// Instantiate text field variables
		public var txtFld_mouseX:TextField = new TextField();
		public var txtFld_mouseY:TextField = new TextField();
		public var txtFld_stageW:TextField = new TextField();
		public var txtFld_stageH:TextField = new TextField();

		// Instantiate text string variables
		public var txtStr_mouseX:String;
		public var txtStr_mouseY:String;
		public var txtStr_stageW:String;
		public var txtStr_stageH:String;

		public function DebugData() {
			// Turn scaling off and set alignment to top left
			stage.scaleMode = StageScaleMode.NO_SCALE;
			stage.align = StageAlign.TOP_LEFT;

			// Create text fields
			createTextField(txtFld_mouseX, "Mouse X: ");
			createTextField(txtFld_mouseY, "Mouse Y: ", 20, 50);
			createTextField(txtFld_stageW, "Stage Width: ", 20, 80);
			createTextField(txtFld_stageH, "Stage Height: ", 20, 110);

			// Add text fields to display list
			addChild(txtFld_mouseX);
			addChild(txtFld_mouseY);
			addChild(txtFld_stageW);
			addChild(txtFld_stageH);

			// Add an event listener to update debug text
			debug();
		}

		private function createTextField(txtFld:TextField, txtStr:String, txtFldX:int = 20, txtFldY:int = 20):void {
			var txtFmt:TextFormat = new TextFormat();

			// Format text
			txtFmt.font = "Helvetica";
			txtFmt.color = 0x333333;
			txtFmt.size = 14;
			txtFmt.leading = 6;
			txtFmt.leftMargin = txtFmt.rightMargin = 4;

			// Text field properties
			txtFld.x = txtFldX
			txtFld.y = txtFldY;
			txtFld.width = 200;
			txtFld.height = 20;
			txtFld.border = txtFld.background = true;
			txtFld.borderColor = 0xCCCCCC;
			txtFld.background = true;
			txtFld.backgroundColor = 0xEEEEEE;
			txtFld.defaultTextFormat = txtFmt;
			txtFld.text = txtStr;
		}

		private function debug():void {
			var timer:Timer = new Timer(1000/30);
			timer.addEventListener(TimerEvent.TIMER, traceOutput);
			timer.start();
		}

		private function traceOutput(e:TimerEvent):void {
			// Debug text
			txtStr_mouseX = "Mouse X: " + mouseX;
			txtStr_mouseY = "Mouse Y: " + mouseY;
			txtStr_stageW = "Stage Width: " + stage.stageWidth;
			txtStr_stageH = "Stage Height: " + stage.stageHeight;

			// Update text fields with debug text
			txtFld_mouseX.text = txtStr_mouseX;
			txtFld_mouseY.text = txtStr_mouseY;
			txtFld_stageW.text = txtStr_stageW;
			txtFld_stageH.text = txtStr_stageH;
		}
	}
}