loggingservices/eventlogger/LogServ/inc/LogServViewChangeManager.h
changeset 0 08ec8eefde2f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/loggingservices/eventlogger/LogServ/inc/LogServViewChangeManager.h	Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,108 @@
+// 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