/*

* Copyright (c) 2002 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: 

*     Recent list duplicate cleaner

*

*/

// INCLUDE FILES

#include <logview.h>

#include "CLogsRecentReader.h"

#include "MLogsObserver.h"

#include "MLogsEvent.h"

#include "MLogsEventArray.h"

#include "LogsEngConsts.h"

// MODULE DATA STRUCTURES

class CLogsClearDuplicates : public CActive, 

                             public MLogViewChangeObserver

    {

    public:

        /**

         * Symbian OS constructor. 

         *

         * @param aFsSession   ref. to file server session

         * @return New instance of this class

         */

        static CLogsClearDuplicates* NewL( RFs& aFsSession );

        /**

         *  Destructor

         */

        ~CLogsClearDuplicates();

    private:

        /**

         * Default constructor. 

         */

        CLogsClearDuplicates();

        /**

         * Second phase constructor. 

         */

        void ConstructL();

        /**

         * C++ constructor. 

         *

         * @param aFsSession   ref. to file server session

         */

        CLogsClearDuplicates( RFs& aFsSession );

    public:

        /**

         * Clear duplicates and set KLogEventRead flag

         *

         * @param aDuplicates       clear duplicates if ETrue

         * @param aView             view to clear duplicates from

         */

        void ClearDuplicatesL( TBool aDuplicates, CLogViewRecent* aView );

    private:

        /**

         * Initialize database view for log events having "read" flag unset 

         */

        void SetFlagClearViewL();

        /**

         * Initialize the database view for log events having "ALS" flag set 

         */

        void SetFlagClearViewALSL();

    public: // from MLogViewChangeObserver

        void HandleLogViewChangeEventAddedL

                    (   TLogId aId

                    ,   TInt aViewIndex

                    ,   TInt aChangeIndex

                    ,   TInt aTotalChangeCount

                    );

        void HandleLogViewChangeEventChangedL

                    (   TLogId aId

                    ,   TInt aViewIndex

                    ,   TInt aChangeIndex

                    ,   TInt aTotalChangeCount

                    );

        void HandleLogViewChangeEventDeletedL

                    (   TLogId aId

                    ,   TInt aViewIndex

                    ,   TInt aChangeIndex

                    ,   TInt aTotalChangeCount

                    );

    protected: /// from CActive

        void RunL();

        void DoCancel();

    private: // data

        /// Ref: file server session

        RFs&            iFsSession;

        /// Own: log client

        CLogClient*     iLogClient;

        /// Own: log view

        // database view for log events having "read" flag unset 

        CLogViewRecent* iFlagClearView;

        // database view for log events having "ALS" flag set 

        CLogViewRecent* iFlagClearViewALS;

        TBool iClearViewALSIsSet; 

        /// Own: log clear flags filter

        CLogFilter*     iFilterFlagClear;

        CLogFilter*     iFilterFlagClearALS;

    };