without super/this etc

gistfile1.as

package components {
 
/**
 *
 * @author					Dimarik
 * @version					1.0
 * @langversion				3.0
 * @playerversion			Flash 10
 * @playerversion			AIR 1.5
 *
 * @keyword					button, togglebutton
 */
public class ToggleButton extends Sprite {
 

	public function ToggleButton() {
		super();
		addEventListener(MouseEvent.CLICK, handler_click);
		// Скины не должны быть источником событий. Только сам компонент.
		mouseChildren = false;
	}
	
	//-------------------------------------------------------------------------
	//
	//   Properties
	//
	//-------------------------------------------------------------------------
 
	private var _selected:		Boolean;
 
	/**
	 *  Contains <code>true</code> if the button is in the down state,
	 *  and <code>false</code> if it is in the up state.
	 */
	public function get selected():Boolean {
		return _selected;
	}
 

	public function set selected(value:Boolean):void {
		if (_selected === value)
			return;
 
		_selected = value;
		validateState();
	}
 
	private var _upSkin:	DisplayObject;
 
	public function set upSkin(value:DisplayObject):void {
		if (_upSkin === value)
			return;
		if (_upSkin && _upSkin.parent)
			removeChild(_upSkin);
		_upSkun = value;
		validateState();
	}
 
	public function get upSkin():DisplayObject {
		return _upSkin;
	}
 
	private var _upAndSelectedSkin:	DisplayObject;
 
	public function set upAndSelectedSkin(value:DisplayObject):void {
		if (_upAndSelectedSkin === value)
			return;
		if (_upAndSelectedSkin && _upAndSelectedSkin.parent)
			removeChild(_upAndSelectedSkin);
		_upSkun = value;
		validateState();
	}
 
	public function get upAndSelectedSkin():DisplayObject {
		return _upSkin;
	}
	
	//-------------------------------------------------------------------------
	//
	//   Private methods
	//
	//-------------------------------------------------------------------------	
 
	private function validateState():void {
		if (_selected) {
			if (_upSkin && _upSkin.parent) {
				removeChild(_upSkin);
			}
			if (_upAndSelectedSkin)
				addChild(_upAndSelectedSkin);
		} else {
			if (_upAndSelectedSkin && _upAndSelectedSkin.parent) {
				removeChild(_upAndSelectedSkin);
			}
			if (_upSkin)
				addChild(_upSkin);
		}
	}
 
	//-------------------------------------------------------------------------
	//
	//   Event handlers
	//
	//-------------------------------------------------------------------------
	
	protected function handler_click(event:MouseEvent):void {
		selected = !selected;
	}
 
 
}
}