/*

* Copyright (c) 2008 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:  Contact data container observer interface

*

*/

#ifndef MVIMPSTSTORAGECONTACTSOBSERVER_H

#define MVIMPSTSTORAGECONTACTSOBSERVER_H

#include <e32std.h>

#include "tvimpstenums.h"

class MVIMPSTStorageContact;

class MVIMPSTStorageContactList;

// CLASS DECLARATION

/**

 *  Interface for contact data container observer

 *

 *  @lib vimpststorage.dll

 *  @since 5.0

 */

class MVIMPSTStorageContactsObserver

    {

    public: // New functions

         /**

         * Called when a contact or list is about to change, or has been changed.

         * @param aList List that is changed. Can be NULL if contact is changed.

         * @param aContact Contact that is changed. Can be NULL if list is changed

         * @param aEventType The type of event: EStorageEventPreChange before

         * the change (contact still has the old information), or

         * EStorageEventPostChange after the change took place 

         * (contact has new information)

         * @param aUserIdChanged, ETrue if userid has been changed else EFalse.

         */

        virtual void HandleStorageChangeL( TVIMPSTEnums::TVIMPSTStorgaeEventType aEventType, 

		        						   MVIMPSTStorageContactList* aList, 

		        						   MVIMPSTStorageContact* aContact ,

		        						   TInt aContactIndex ) = 0;

        /**

         * Virtual destructor

         */

        virtual ~MVIMPSTStorageContactsObserver() {};

    };

#endif      // MVIMPSTSTORAGECONTACTSOBSERVER_H

// End of File