/*

* Copyright (c) 2007-2008 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:  messge observer interface 

*

*/

#ifndef __MIMCVENGINEMESSAGEOBSERVER_H__

#define __MIMCVENGINEMESSAGEOBSERVER_H__

//  INCLUDES

#include <e32def.h>

//	FORWARD CLASS DECLERATIONS

// CLASS DECLARATION

/**

 *  Observer interface to handle message container changes.

 *

 *  @lib imcvengine.dll

 *  @since 5.0

 */

class MIMCVEngineMessageObserver

	{

	public: // Definitions

		/**

		 * Events for observer to handle.

		 */

		enum TMessageEventType

			{

			ENewMessage,

			EMessageChanged,

			EMessageDeleted,

			EChatDeleted

			};

	public: // Interface

		/**

		 * Handle events.

		 * @param aEvent Event to handle.

		 * @param aIndex, Index of message which is affected by event.

		 */

		virtual void HandleMessageEvent( TMessageEventType aEvent, TInt aIndex = -1 ) = 0;

	protected: // For protection.

		/**

		 * Destructor for protection

		 */

		virtual ~MIMCVEngineMessageObserver(){}

	};

#endif      // __MIMCVENGINEMESSAGEOBSERVER_H__

// End of File