////////////////////////////////////////////////////////////////////////////////
//
//  Licensed to the Apache Software Foundation (ASF) under one or more
//  contributor license agreements.  See the NOTICE file distributed with
//  this work for additional information regarding copyright ownership.
//  The ASF licenses this file to You under the Apache License, Version 2.0
//  (the "License"); you may not use this file except in compliance with
//  the License.  You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//
////////////////////////////////////////////////////////////////////////////////

package mx.accessibility
{

import mx.accessibility.AccConst;
import mx.controls.RadioButton;
import mx.core.UIComponent;
import mx.core.mx_internal;

use namespace mx_internal;

/**
 *  RadioButtonAccImpl is a subclass of AccessibilityImplementation
 *  which implements accessibility for the RadioButton class.
 *  
 *  @langversion 3.0
 *  @playerversion Flash 9
 *  @playerversion AIR 1.1
 *  @productversion Flex 3
 */
public class RadioButtonAccImpl extends CheckBoxAccImpl
{
    include "../core/Version.as";

	//--------------------------------------------------------------------------
	//
	//  Class methods
	//
	//--------------------------------------------------------------------------

	/**
	 *  Enables accessibility in the RadioButton class.
	 * 
	 *  <p>This method is called by application startup code
	 *  that is autogenerated by the MXML compiler.
	 *  Afterwards, when instances of RadioButton are initialized,
	 *  their <code>accessibilityImplementation</code> property
	 *  will be set to an instance of this class.</p>
	 *  
	 *  @langversion 3.0
	 *  @playerversion Flash 9
	 *  @playerversion AIR 1.1
	 *  @productversion Flex 3
	 */
	public static function enableAccessibility():void
	{
		RadioButton.createAccessibilityImplementation =
			createAccessibilityImplementation;
	}

	/**
	 *  @private
	 *  Creates a RadioButton's AccessibilityImplementation object.
	 *  This method is called from UIComponent's
	 *  initializeAccessibility() method.
	 */
	mx_internal static function createAccessibilityImplementation(
								component:UIComponent):void
	{
		component.accessibilityImplementation =
			new RadioButtonAccImpl(component);
	}

	//--------------------------------------------------------------------------
	//
	//  Constructor
	//
	//--------------------------------------------------------------------------

	/**
	 *  Constructor.
	 *
	 *  @param master The UIComponent instance that this AccImpl instance
	 *  is making accessible.
	 *  
	 *  @langversion 3.0
	 *  @playerversion Flash 9
	 *  @playerversion AIR 1.1
	 *  @productversion Flex 3
	 */
	public function RadioButtonAccImpl(master:UIComponent)
	{
		super(master);

		role = AccConst.ROLE_SYSTEM_RADIOBUTTON;
	}
}

}