LinkButtonCustom

package com.witheringtree.controls
{
	import com.witheringtree.skins.LinkButtonSkin;
 
	import mx.controls.LinkButton;
	/**
	 * Extension of the Event class to allow you to pass parameters to the event handlers.
	 */
	public class LinkButtonCustom extends LinkButton
	{
		private var _transparent:Boolean = false;
		/**
		 *  Constructor.
		 */
		public function LinkButtonCustom()
		{
			super();
			transparency();
		}
		/**
		 * @private
		 * Sets the backgrond transparent or not.
		 */
		private function transparency():void
		{
			if(_transparent)
			{
				this.setStyle("downSkin", LinkButtonSkin as Class);
				this.setStyle("overSkin", LinkButtonSkin as Class);
				this.setStyle("upSkin", LinkButtonSkin as Class);
			}
			else
			{
				this.setStyle("downSkin", null as Class);
				this.setStyle("overSkin", null as Class);
				this.setStyle("upSkin", null as Class);
			}
		}
		/**
		 * Make the background of the button transparent.
		 *
		 * @param bool Boolean value to specify if the background show be transparent or not.
		 *
		 *  @default false
		 */
		public function set transparent(bool:Boolean):void
		{
			this._transparent = bool;
			transparency();
		}
		/**
		 *  Returns true if background is transparent
		 */
		public function get transparent():Boolean
		{
			return this._transparent;
		}
	}
}

package com.witheringtree.skins
{
	import mx.core.EdgeMetrics;
	import mx.skins.Border;
	public class LinkButtonSkin extends Border
	{
		public function LinkButtonSkin()
		{
			super();
		}
		override public function get borderMetrics():EdgeMetrics
		{
			return EdgeMetrics.EMPTY;
		}
		override protected function updateDisplayList(w:Number, h:Number):void
		{
			super.updateDisplayList(w, h);
			var cornerRadius:Number = getStyle("cornerRadius");
			graphics.clear();
			switch(name)
			{
				case "upSkin":
				{
					break;
				}
				case "overSkin":
				{
					break;
				}
				case "downSkin":
				{
					break;
				}
				case "disabledSkin":
				{
					drawRoundRect(0, 0, w, h, cornerRadius, 0, 0);
					break;
				}
			}
		}
	}
}

var lb:LinkButtonCustom = new LinkButtonCustom();
	lb.transparent = true;
	lb.label = "My Button"
this.addChild(lb);