1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef __LOGCLIENTCHANGEOBSERVER_H__

    17 #define __LOGCLIENTCHANGEOBSERVER_H__

    18 

    19 // System includes

    20 #include <logwrap.h>

    21 

    22 /**

    23 Constants

    24 @publishedAll

    25 */

    26 const TUid KLogClientChangeEventLogCleared = { 0x101F8C4F };

    27 const TUid KLogClientChangeEventRefreshView = { 0x1020601B }; 

    28 

    29 /** 

    30 This class allows a client of the log engine to observe specific change 

    31 events within a given view.

    32 @publishedAll 

    33 @released

    34 */

    35 class MLogClientChangeObserver

    36 	{

    37 public:

    38 	/** Handle a global change within the logs database

    39 	

    40 	This method is called when a generic event occurs within the log database. 

    41 	Such events are	not specific to a view (see MLogViewChangeObserver for view 

    42 	specific events).

    43 	

    44 	@param aChangeType The uid corresponding to the type of event which 

    45 	occurred.

    46 	@param aChangeParam1 A context-specific change paramater which can be 

    47 	interpreted	based on the change type.

    48 	@param aChangeParam2 A context-specific change paramater which can be 

    49 	interpreted based on the change type.

    50 	@param aChangeParam3 A context-specific change paramater which can be 

    51 	interpreted	based on the change type.

    52 	

    53 	A list of change types and their associated parameters follows:

    54 	

    55 	KLogClientChangeEventLogCleared - no parameters. This event occurs when 

    56 	the log database is cleared.	 

    57 	KLogClientChangeEventRefreshView - no parameters. This event occurs when 

    58 	the client needs to refresh their view. For example, this occurs after the

    59 	log database has been restored from a backup. */

    60 	virtual void HandleLogClientChangeEventL(TUid aChangeType, TInt aChangeParam1, TInt aChangeParam2, TInt aChangeParam3) = 0;

    61 

    62 private:

    63 	IMPORT_C virtual void MLogClientChangeObserver_Reserved1();

    64 	IMPORT_C virtual void MLogClientChangeObserver_Reserved2();

    65 	};

    66 

    67 

    68 #endif