/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.0 (the "NPL"); you may not use this file except in
 * compliance with the NPL.  You may obtain a copy of the NPL at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the NPL is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
 * for the specific language governing rights and limitations under the
 * NPL.
 *
 * The Initial Developer of this code under the NPL is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
 * Reserved.
 */

#ifndef nsIRadioButton_h__
#define nsIRadioButton_h__

#include "nsIButton.h"

#define NS_IRADIOBUTTON_IID   \
{ 0x18032ad4, 0xb265, 0x11d2, \
{ 0xaa, 0x2a, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } }       

class nsIRadioGroup;

/**
 * RadioButton widget. Can show itself in a checked or unchecked state. 
 * The RadioButton widget automatically shows itself checked or unchecked when clicked on.
 */

class nsIRadioButton : public nsIButton {

  public:

    /**
     * Set the radio state.
     * @param aState PR_TRUE sets the RadioButton and unsets all siblings, PR_FALSE unsets it
     *
     */
    virtual void SetState(PRBool aState) = 0;

    /**
     * Gets the state the RadioButton
     *
     * @return PR_TRUE if set, PR_FALSE if unset
     *
     */
    virtual PRBool GetState() = 0;

};

#endif  // nsIRadioButton_h__