/*
* Copyright (c) 2002-2007 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:  Virtual Phonebook base class for asynchronous contact 
*                operations.
*
*/


#ifndef MVPBKCONTACTOPERATIONBASE_H
#define MVPBKCONTACTOPERATIONBASE_H

// INCLUDES
#include <e32cmn.h>

// CLASS DECLARATIONS

/**
 * Virtual Phonebook abtract asynchronous contact operation.
 * This interface is used as a handle to asynchronous contact operations.
 * Clients should keep a reference to the handle during the asynchronous 
 * operation to be able to delete and cancel the operation before it
 * completes.
 */
class MVPbkContactOperationBase
    {
    public:  // Interface
        /**
         * Destructor. Cancels this operation and releases any 
         * resources held by it.
         */
        virtual ~MVPbkContactOperationBase() {}

        /**
         * Returns an extension point for this interface or NULL.
         * @param aExtensionUid Uid of extension.
         * @return Extension point or NULL.
         */
        virtual TAny* ContactOperationBaseExtension(
                TUid /*aExtensionUid*/) { return NULL; }
    };

#endif // MVPBKCONTACTOPERATIONBASE_H

// End of File