/*

* 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: 

*     Defines abstract interface for Logs model.

*

*/

#ifndef __MLogsModel_H_

#define __MLogsModel_H_

//  INCLUDES

#include <e32base.h>

#include "LogsEng.hrh"

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// CLASS DECLARATION

class MLogsObserver;

class MLogsEventGetter;

class MLogsReaderConfig;

/**

 *	Defines abstract interface for Logs model

 */

class MLogsModel

    {

    public:

    enum TClearMissedCalls

            {

            ENormalOperation,

            ESkipClearing

            };

    enum TDoActivate

            {

            EActivateOnly,

            ERefresh,

            EResetAndRefresh

            };

    enum TDoDeactivate

        {

        EKeepDBConnection,

        ECloseDBConnection,

        ECloseDBConnectionAndResetArray,

        EResetOnlyArray,

        EResetOnlyArrayWithDirty 

        };

        virtual ~MLogsModel() {};

    public:

       /**

        *    Event deletion method

        *

        *    @param aIndex index array value of the event to be deleted

        */

        virtual void Delete( TInt aIndex ) = 0;

       /**

        *   Event count method.

        *

        *   @return count of events in this list.

        */

        virtual TInt Count() = 0;

       /**

        *   Event get method.

        *

        *   @param aIndex index array value.

        *   @return 

        */

        virtual const MLogsEventGetter* At( TInt aIndex ) = 0;

       /**

        *   Set UI observer for notifications

        * 

        *   @param aObserver pointer to observer.

        */

        virtual void SetObserver( MLogsObserver* aObserver ) = 0;

       /**

        *   Activate model.

        *   @param  aDoActivate  If event array is to be resetted or refreshed or model just activated.        

        */

        virtual void DoActivateL( TDoActivate aDoActivate ) = 0;

       /**

        *   Deactivate model.

        *   @param aClearMissedCalls For missed calls view the clearing of duplicates can be skipped

        *                            by setting this to ESkipClearing

        *   @param aDisconnectDb     Model disconnects from db if this is set to ETrue

        */

        virtual void DoDeactivate( TClearMissedCalls aClearMissedCalls,

                                   TDoDeactivate aDisconnectDb ) = 0;

       /**

        *   Reset model. Do not delete data from db.

        */

        virtual void Reset() = 0;

       /**

        *   Configure model

        *

        *   @param  aConfig  pointer to configure info   

        */

        virtual void ConfigureL( const MLogsReaderConfig* aConfig ) = 0;

        /**

        *   Start reading.

        *   @param  aReset  If event array is to be resetted.

        **/

        virtual void KickStartL( TBool aReset ) = 0;

    };

#endif

// End of File  __MLogsModel_H_