 	 *  @param childID uint
 	 *
 	 *  @return Value String
-	 *  @review
 	 */
 	override public function get_accValue(childID:uint):String
 	{


	//--------------------------------------------------------------------------
	//
	//  Class initialization
	//
	//--------------------------------------------------------------------------

	/**
	 *  @private
	 *  Static variable triggering the hookAccessibility() method.
	 *  This is used for initializing ListBaseAccImpl class to hook its
	 *  createAccessibilityImplementation() method to ListBase class 
	 *  before it gets called from UIComponent.
	 */
	private static var accessibilityHooked:Boolean = hookAccessibility();

	/**
	 *  @private
	 *  Static method for swapping the createAccessibilityImplementation()
	 *  method of ListBase with the ListBaseAccImpl class.
	 */ 
	private static function hookAccessibility():Boolean
	{
		ListBase.createAccessibilityImplementation =
			createAccessibilityImplementation;

		return true;
	}

	//--------------------------------------------------------------------------
	//
	//  Class constants
	//
	//--------------------------------------------------------------------------

	/**
	 *  @private
	 *  Role of listItem.
	 */
	private static const ROLE_SYSTEM_LISTITEM:uint = 0x22; 
	
	/**
	 *  @private
	 */
	private static const STATE_SYSTEM_FOCUSED:uint = 0x00000004;
	
	/**
	 *  @private
	 */
	private static const STATE_SYSTEM_INVISIBLE:uint = 0x00008000;
	
	/**
	 *  @private
	 */
	private static const STATE_SYSTEM_OFFSCREEN:uint = 0x00010000;
	
	/**
	 *  @private
	 */
	private static const STATE_SYSTEM_SELECTABLE:uint = 0x00200000;
	
	/**
	 *  @private
	 */
	private static const STATE_SYSTEM_SELECTED:uint = 0x00000002;
	
	/**
	 *  @private
	 *  Event emitted if 1 item is selected.
	 */
	private static const EVENT_OBJECT_FOCUS:uint = 0x8005; 
	
	/**
	 *  @private
	 *  Event emitted if 1 item is selected.
	 */
	private static const EVENT_OBJECT_SELECTION:uint = 0x8006; 
	
	//--------------------------------------------------------------------------
	//
	//  Class methods
	//
	//--------------------------------------------------------------------------

	/**
	 *  @private
	 *  Method for creating the Accessibility class.
	 *  This method is called from UIComponent.
	 *  @review
	 */
	mx_internal static function createAccessibilityImplementation(
								component:UIComponent):void
	{
		component.accessibilityImplementation =
			new ListBaseAccImpl(component);
	}

	/**
	 *  Method call for enabling accessibility for a component.
	 *  This method is required for the compiler to activate
	 *  the accessibility classes for a component.
	 */
	public static function enableAccessibility():void
	{
	}

	//--------------------------------------------------------------------------

use namespace mx_internal;

/**
 *  ListBaseAccImpl is a subclass of AccessibilityImplementation
 *  which implements accessibility for the ListBase class.
 */
public class ListBaseAccImpl extends AccImpl
{
