/*

* 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:  chat observer interface

*

*/

#ifndef __MIMCVENGINECHATOBSERVER_H__

#define __MIMCVENGINECHATOBSERVER_H__

//  INCLUDES

#include <e32def.h>

//	FORWARD CLASS DECLERATIONS

class MIMCVEngineMessage;

// CLASS DECLARATION

/**

 *  Observer interface to handle messages container changes.

 *

 *  @lib imcvengine.dll

 *  @since 5.0

 */

class MIMCVEngineNewMsgObserver

	{

	public: // Definitions

		/**

		 * Events for observer to handle.

		 */

		enum TChatEventType

			{			

			EUnreadCountChanged, // Happens with new message and when messages are read.

			EMemoryLow,

            EEventNotSpecified

			};

	public: // Interface

		/**

		 * Handle events.

		 * @param aEvent Event to handle.

		 * @param aMessage, Event occurred because of message

		 */

		virtual void HandleChatEventL( TChatEventType aEvent, MIMCVEngineMessage* aMessage = NULL ) = 0;

	protected: // For protection.

		/**

		 * Destructor

		 */

		virtual ~MIMCVEngineNewMsgObserver(){}

	};

#endif      // __MIMCVENGINECHATOBSERVER_H__

// End of File