/*

* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

* which accompanies this distribution, and is available

* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   CFbsBitmap change observer

*

*/

#ifndef AKN_ICON_OBSERVER_H

#define AKN_ICON_OBSERVER_H

// INCLUDES

// CONSTANTS

// FORWARD DECLARATIONS

class CFbsBitmap;

// FUNCTION PROTOTYPES

// CLASS DECLARATION

/**

* MAknIconObserver.

*/

class MAknIconObserver

    {

public:

    /**

    * This is an abstract class for specifying an interface for 

    * receiving notifications when an icon's frame buffer has been updated.

    * An object of derived class implementing this interface should be registered

    * for a given icon to the AknIcon framework using 

    * function AknIconUtils::SetObserver().

    * 

    * AknIcon framework calls this function whenever the frame buffer of the observed icon

    * changes. This observer mechanism is mainly useful in animated icons cases.

    * The observer e.g. can redraw the icon on the screen when the frame of the animated 

    * icon has changed.

    *

    * @since 2.8

    * @param aBitmap bitmap or mask of the icon

    */

    virtual void BitmapChanged(CFbsBitmap *aBitmap)=0;

    };

/*

*

* This class is internal and not intended for use.

*

*/

class MAknIconChangeObserver

    {

public:

    virtual void BitmapChanged()=0;

    };

#endif // AKN_ICON_OBSERVER_H

// End of File