/*

* 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: 

*     Abstract class for Call status notifier

*

*/

#ifndef __MLogsCallStatus_H

#define __MLogsCallStatus_H

//  INCLUDE FILES  

// CONSTANTS

// FORWARD DECLARATIONS

class MLineStatusObserver;

//  CLASS DECLARATIONS 

class MLogsCallStatus

    {

    public:

        /**

         * Destructor.

         */

        virtual ~MLogsCallStatus() {};        

        /**

         * Call/line status observer

         *

         * Parameter: pointer to observer, if NULL then connection to ETel is closed

         *

         */

        virtual void SetObserver( MLineStatusObserver* aObserver ) = 0;

        /**

         * Call status, initiate observer first with LineStatusObserver!

         *

         * Parameter: aCallIsActive, set to ETrue if call is active, else EFalse

         *

         * Return value: KErrNone if call is succesfull, or ETEL error code

         */

        virtual TInt CallIsActive(TBool& aCallIsActive) = 0;

        /**

         * Active call duration.

         *

         * @param aCallDuration, call duration if active, otherwise will return error code.

         * Return value: KErrNone if call is active otherwise error code.

         */

        virtual TInt ActiveCallDuration( TTimeIntervalSeconds& aCallDuration ) = 0;

    };

#endif  // __MLogsCallStatus_H

// End of file