sl@0: // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #ifndef __LOGCLIENTCHANGEOBSERVER_H__
sl@0: #define __LOGCLIENTCHANGEOBSERVER_H__
sl@0: 
sl@0: // System includes
sl@0: #include <logwrap.h>
sl@0: 
sl@0: /**
sl@0: Constants
sl@0: @publishedAll
sl@0: */
sl@0: const TUid KLogClientChangeEventLogCleared = { 0x101F8C4F };
sl@0: const TUid KLogClientChangeEventRefreshView = { 0x1020601B }; 
sl@0: 
sl@0: /** 
sl@0: This class allows a client of the log engine to observe specific change 
sl@0: events within a given view.
sl@0: @publishedAll 
sl@0: @released
sl@0: */
sl@0: class MLogClientChangeObserver
sl@0: 	{
sl@0: public:
sl@0: 	/** Handle a global change within the logs database
sl@0: 	
sl@0: 	This method is called when a generic event occurs within the log database. 
sl@0: 	Such events are	not specific to a view (see MLogViewChangeObserver for view 
sl@0: 	specific events).
sl@0: 	
sl@0: 	@param aChangeType The uid corresponding to the type of event which 
sl@0: 	occurred.
sl@0: 	@param aChangeParam1 A context-specific change paramater which can be 
sl@0: 	interpreted	based on the change type.
sl@0: 	@param aChangeParam2 A context-specific change paramater which can be 
sl@0: 	interpreted based on the change type.
sl@0: 	@param aChangeParam3 A context-specific change paramater which can be 
sl@0: 	interpreted	based on the change type.
sl@0: 	
sl@0: 	A list of change types and their associated parameters follows:
sl@0: 	
sl@0: 	KLogClientChangeEventLogCleared - no parameters. This event occurs when 
sl@0: 	the log database is cleared.	 
sl@0: 	KLogClientChangeEventRefreshView - no parameters. This event occurs when 
sl@0: 	the client needs to refresh their view. For example, this occurs after the
sl@0: 	log database has been restored from a backup. */
sl@0: 	virtual void HandleLogClientChangeEventL(TUid aChangeType, TInt aChangeParam1, TInt aChangeParam2, TInt aChangeParam3) = 0;
sl@0: 
sl@0: private:
sl@0: 	IMPORT_C virtual void MLogClientChangeObserver_Reserved1();
sl@0: 	IMPORT_C virtual void MLogClientChangeObserver_Reserved2();
sl@0: 	};
sl@0: 
sl@0: 
sl@0: #endif