/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  receives key pressed notifications

*

*/

#ifndef M_MMVISIBILITYOBSERVER_H

#define M_MMVISIBILITYOBSERVER_H

#include <coedef.h>

/**

 *  Interface for handling application changing background/foreground states.

 *

 *  @code

 *  @endcode

 *  @lib 

 *  @since S60 v3.0

 *  @ingroup group_mmwidgets

 */

class MMmVisibilityObserver

    {

public:

    /**

     * Called when application goes into foreground (e.g options menu

     * goes off or application is opened ).

     * 

     * @since S60 v5.0

     */

    virtual void HandleForegroundGainedL() = 0;

    /**

     * Called when application goes into background (e.g the options list

     * is open and application view is dimmed).

     *

     * @since S60 v5.0

     */

    virtual void HandleBackgroundGainedL() = 0;

    };

#endif // M_MMVISIBILITYOBSERVER_H