/*

* 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: 

*     Class for log clearing.

*

*/

#ifndef __CLogsClearLog_H_

#define __CLogsClearLog_H_

//  INCLUDES

#include <e32base.h>

#include <f32file.h>

#include <logviewchangeobserver.h>

#include "MLogsClearLog.h"

#include "MLogsStateHolder.h"

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class CLogClient;

class MLogsObserver;

class CLogViewRecent;

// CLASS DECLARATION

/**

 *	Clearing class.

 */

class CLogsClearLog : public CActive, 

                      public MLogsClearLog,

                      public MLogsStateHolder

    {

    public:

        /**

         * Symbian OS constructor. 

         *

         * @param aFsSession   ref. to file server session

         * @param aObserver pointer to observer. Default NULL

         * @return New instance of this class

         */

        static CLogsClearLog* NewL

                            (   RFs& aFsSession

                            ,   MLogsObserver* aObserver = NULL\

                            );

        /**

         *  Destructor

         */

        ~CLogsClearLog();

    private:

        /**

         * Default constructor. 

         */

        CLogsClearLog();

        /**

         * Second phase constructor. 

         */

        void ConstructL();

        /**

         * C++ constructor. 

         *

         * @param aFsSession   ref. to file server session

         * @param aObserver pointer to observer

         */

        CLogsClearLog( RFs& aFsSession, MLogsObserver* aObserver );

    protected: // from CActive

        void DoCancel();

        void RunL();

		TInt RunError(TInt aError);

    public: // from MLogsClearLog

        void ClearModelL( const TLogsModel aModel );       

        void DeleteEventL( TLogId aId );               

        void SetObserver( MLogsObserver* aObserver );

    public: // from MLogsStateHolder

        TLogsState State() const;

    private:

        // internal states of object

        enum TClearPhase

            {

            EClearLog = 0,

            EClearEvent,

            EClearDuplicates

            };

    private: // data

        /// Ref: File server session

        RFs&                iFsSession;

        /// Own: Log client

        CLogClient*         iLogClient;

        /// Own:

        CLogViewRecent*     iViewRecent;

        /// Ref: Observer

        MLogsObserver*      iObserver;        

        /// Own: state

        TLogsState          iState;

        /// Own: phase

        TClearPhase         iPhase;

    };

#endif

// End of File  __CLogsClearLog_H_