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// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#ifndef __LOGVIEWCHANGEOBSERVER_H__
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#define __LOGVIEWCHANGEOBSERVER_H__
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// System includes
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#include <logwrap.h>
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/**
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This class allows a client of the log engine to observe specific change events within
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a given view.
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@publishedAll
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@released
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*/
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class MLogViewChangeObserver
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{
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public:
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/**Handle a change corresponding to a view addition
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This method is called when a log event is added to a view. The event maybe
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recently added, or have existed for some time but only now meet the
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criteria of this view (i.e satisfy the filter) due to some other change.
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@param aId The id of the log event which has been added to the view.
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@param aViewIndex The position within the view at which the event has been
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added.
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@param aChangeIndex In a series of changes, this is the index of the
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currently processing change. The change index will be greater than (or
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equal to) 0, and less than the total change count.
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@param aTotalChangeCount This is the total count of all changes which will
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be processed in this batch.
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*/
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virtual void HandleLogViewChangeEventAddedL(TLogId aId, TInt aViewIndex, TInt aChangeIndex, TInt aTotalChangeCount) = 0;
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/** Handle a change corresponding to a view change
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This method is called when a log event changes within a view.
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@param aId The id of the log event which has changed within the view.
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@param aViewIndex The position within the view where the change occurred.
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@param aChangeIndex In a series of changes, this is the index of the
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currently processing change. The change index will be greater than (or
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equal to) 0, and less than the total change count.
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@param aTotalChangeCount This is the total count of all changes which will
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be processed in this batch.
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*/
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virtual void HandleLogViewChangeEventChangedL(TLogId aId, TInt aViewIndex, TInt aChangeIndex, TInt aTotalChangeCount) = 0;
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/** Handle a change corresponding to a view deletion
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This method is called when a log event is removed from a view.
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@param aId The id of the log event which has been removed from the view
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@param aViewIndex The position within the view which the event previously
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held.
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@param aChangeIndex In a series of changes, this is the index of the
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currently processing change. The change index will be greater than (or
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equal to) 0, and less than the total change count.
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@param aTotalChangeCount This is the total count of all changes which
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will be processed in this batch
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*/
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virtual void HandleLogViewChangeEventDeletedL(TLogId aId, TInt aViewIndex, TInt aChangeIndex, TInt aTotalChangeCount) = 0;
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};
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#endif
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