/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:   

*

*/

#ifndef __CHANGESTATUS_H

#define __CHANGESTATUS_H

/**

 * This class implements ChangeStatus SAPI core logic.It includes  

 * methods for changing the status of message flag and deleting a message.

 * 

 */

class CMessageChangeStatus : public CBase

{

	public:

		 /*

		 * Creates a new instance of a @ref CMessageChangeStatus

		 * @param CMsvSession

		 * @return The newly created CMessageChangeStatus

		 */

		static CMessageChangeStatus* NewL( CMsvSession& aSession );

		/*

		* Creates a new instance of a @ref CMessageChangeStatus

		* @param CMsvSession

		* @return The newly created CMessageChangeStatus

		*/

		static CMessageChangeStatus* NewLC( CMsvSession& aSession );

		/**

		 * Destructor.

		 */

		~CMessageChangeStatus();

		/**

		* Deletes the message of specified ID

		* @param aMsgId It is ID of message to be deleted

		* @param aNotifyCallback a callback object

		*/

		void DeleteMessageL( const TMsvId& aMsgId );

		/**

		* Changes the message flag to the value specified

		* @param aMsgId It is ID of message

		* @param aStatusFlag Message status flag

		* @param aValue  Message status flag value

		* @param aNotifyCallback a callback object

		*/

		void ChangeStatusL(const TMsvId& aMsgId, 

									const TMessageStatusFlag aStatusFlag, 

									const TBool aValue );

	private:

		/** 

	     * Default  constructor.

	     * @param aSession  It is an object of CMsvSession Class which

	     *        represents a channel of communication between a client thread  

	     *        and the Message Server thread .

	     */

		CMessageChangeStatus(CMsvSession& aSession);

		/**

		* Initializer

		*/

		void InitializeL();

		/**

		*   changes the message status 

		*/

		void ChangeStatusL();

		/**

		*   completes delete request

		*/

		void DeleteMessageL();

	private:

		/**

		 * Message server session. 

		*/

		CMsvSession& 			iServerSession;

		/**

		 * Message ID 

		*/ 

		TMsvId 					iMessageId;

		/**

		 * Message entry 

		*/ 

		CMsvEntry* 				iEntry;

		/**

		 * Index entry 

		*/ 

		TMsvEntry 				iIndexEntry;

		/**

		 * Message Status Flag

		*/ 

		TMessageStatusFlag		iStatusFlag;

		/**

		 * status flag value.

		*/ 

		TBool 					iFlagValue;

};

#endif __CHANGESTATUS_H