/*

* 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:  Observer interface for a fade effect.

 *

*/

#ifndef C_FSFADEEFFECTOBSERVER_H

#define C_FSFADEEFFECTOBSERVER_H

/**

 * Observer interface for a fade effect.

 */

NONSHARABLE_CLASS(MFsFadeEffectObserver)

    {

public:

    /**

     * 

     */

    enum TFadeEffectState 

        {

        EIdle=0,

        EFadingIn=1,

        EFadingOut,        

        EFadeInFinished,

        EFadeOutFinished

        };

public:

    /**

     * Function which will receive notifications about 

     * fade effect state changes.

     * @param aState Current state of fade affect

     */

    virtual void FadeEffectEvent(MFsFadeEffectObserver::TFadeEffectState aState)=0;

    };

#endif // C_FSFADEEFFECTOBSERVER_H