/*

* 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 "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 API for presence watcher events

*

*/

#ifndef MCAWATCHEROBSERVER_H

#define MCAWATCHEROBSERVER_H

// INCLUDES

#include <e32std.h>

// FORWARD DECLARATIONS

class MCAStoredContact;

// CLASS DECLARATION

/**

 *  Interface for presence watcher observers.

 *

 *  @lib CAEngine.lib

 *  @since 1.2

 */

class MCAWatcherObserver

    {

    public:

        /**

         * Gets called when watched friend's presence status changes. This event

         * is restricted to only network originated events, so if user refreshes

         * the friends-list by himself, then this event will not raise.

         * @param aContact Contact that was changed

         */

        virtual void HandleWatcherEvent( const MCAStoredContact* aContact ) = 0;

    protected:

        /**

         * Destrutor.

         */

        virtual ~MCAWatcherObserver() {};

    };

#endif      // MCAWATCHEROBSERVER_H

// End of File