williamr@2: // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
williamr@2: // All rights reserved.
williamr@2: // This component and the accompanying materials are made available
williamr@2: // under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
williamr@2: // which accompanies this distribution, and is available
williamr@2: // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
williamr@2: //
williamr@2: // Initial Contributors:
williamr@2: // Nokia Corporation - initial contribution.
williamr@2: //
williamr@2: // Contributors:
williamr@2: //
williamr@2: // Description:
williamr@2: //
williamr@2: 
williamr@2: #ifndef __LOGCLIENTCHANGEOBSERVER_H__
williamr@2: #define __LOGCLIENTCHANGEOBSERVER_H__
williamr@2: 
williamr@2: // System includes
williamr@2: #include <logwrap.h>
williamr@2: 
williamr@2: /**
williamr@2: Constants
williamr@2: @internalComponent
williamr@2: */
williamr@2: const TUid KLogClientChangeEventLogCleared = { 0x101F8C4F };
williamr@2: const TUid KLogClientChangeEventRefreshView = { 0x1020601B }; 
williamr@2: 
williamr@2: /** 
williamr@2: This class allows a client of the log engine to observe specific change 
williamr@2: events within a given view.
williamr@2: @publishedAll 
williamr@2: @released
williamr@2: */
williamr@2: class MLogClientChangeObserver
williamr@2: 	{
williamr@2: public:
williamr@2: 	/** Handle a global change within the logs database
williamr@2: 	
williamr@2: 	This method is called when a generic event occurs within the log database. 
williamr@2: 	Such events are	not specific to a view (see MLogViewChangeObserver for view 
williamr@2: 	specific events).
williamr@2: 	
williamr@2: 	@param aChangeType The uid corresponding to the type of event which 
williamr@2: 	occurred.
williamr@2: 	@param aChangeParam1 A context-specific change paramater which can be 
williamr@2: 	interpreted	based on the change type.
williamr@2: 	@param aChangeParam2 A context-specific change paramater which can be 
williamr@2: 	interpreted based on the change type.
williamr@2: 	@param aChangeParam3 A context-specific change paramater which can be 
williamr@2: 	interpreted	based on the change type.
williamr@2: 	
williamr@2: 	A list of change types and their associated parameters follows:
williamr@2: 	
williamr@2: 	KLogClientChangeEventLogCleared - no parameters. This event occurs when 
williamr@2: 	the log database is cleared.	 
williamr@2: 	KLogClientChangeEventRefreshView - no parameters. This event occurs when 
williamr@2: 	the client needs to refresh their view. For example, this occurs after the
williamr@2: 	log database has been restored from a backup. */
williamr@2: 	virtual void HandleLogClientChangeEventL(TUid aChangeType, TInt aChangeParam1, TInt aChangeParam2, TInt aChangeParam3) = 0;
williamr@2: 
williamr@2: private:
williamr@2: 	IMPORT_C virtual void MLogClientChangeObserver_Reserved1();
williamr@2: 	IMPORT_C virtual void MLogClientChangeObserver_Reserved2();
williamr@2: 	};
williamr@2: 
williamr@2: 
williamr@2: #endif