/*

 * 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