// Copyright (c) 2002-2009 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:

 //

 #ifndef __LOGSERVVIEWCHANGEMANAGER_H__

 #define __LOGSERVVIEWCHANGEMANAGER_H__

 #include <logcli.h>

 #include "LogChangeDefinition.h"

 #include "LogCliServShared.h"

 #include "LogServBackupObserver.h"

 #include "LogServDatabaseChangeObserver.h"

 // Classes referenced

 class MLogServDatabaseChangeInterface;

 /////////////////////////////////////////////////////////////////////////////////////////

 // -----> CLogServViewBase (header)

 /////////////////////////////////////////////////////////////////////////////////////////

 /**

 @internalComponent

 */

 class CLogServViewChangeManager : public CBase

 	{

 public:

 	static CLogServViewChangeManager* NewL(MLogServDatabaseChangeInterface& aChangeInterface);

 	~CLogServViewChangeManager();

 private:

 	CLogServViewChangeManager(MLogServDatabaseChangeInterface& aChangeInterface);

 	void ConstructL();

 public: // CHANGE TRANSACTION

 	/**

 	 *

 	 */

 	void ChangeTransactionPrepare();

 	/**

 	 *

 	 */

 	void ChangeTransactionSubmitL(TLogId aId, TLogDatabaseChangeType aType, TInt aViewIndex);

 	/**

 	 *

 	 */

 	void ChangeTransactionCommitL();

 public: // CHANGE DELIVERY

 	/**

 	 * Deliver the next available batch of changes. Panics if there

 	 * aren't any.

 	 */

 	void DeliverChangesL(const RMessage2& aMessage);

 public: // CHANGE REQUEST MANAGEMENT

 	/**

 	 * The client has requested change notifications

 	 */

 	void RequestChangeNotifications(const RMessage2& aMessage);

 	/**

 	 * The client has cancelled a previous change notification request

 	 */

 	void RequestChangeNotificationsCancel();

 private:

 	void NotifyClient();

 	void CompleteClientChangeMessage(TInt aCompletionCode);

 private:

 	MLogServDatabaseChangeInterface& iChangeInterface;

 	/**

 	 * Completed when the view contents change

 	 */

 	RMessagePtr2 iClientSideChangeMessage;

 	/**

 	 * A buffer which contain the list of changed items

 	 * for the current change transaction

 	 */

 	CLogChangeDefinition* iTransientChangeDefinition;

 	/**

 	 * All the change 'packages' which are outstanding for this client

 	 */

 	RPointerArray<CBufBase> iPendingChanges;

 	};

 #endif