/*

* Copyright (c) 2007 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 declaration for MDiagEngineCallHandlerObserver

*

*/

#ifndef DIAGENGINECALLHANDLEROBSERVER_H

#define DIAGENGINECALLHANDLEROBSERVER_H

#include "diagenginecallhandlerstates.h"    // TDiagEngineCallHandlerState

class MDiagEngineCallHandlerObserver

    {

public:

    /**

    * Notify call state change

    * @param aState - EDiagEngineCallHandlerStateIdle if not in call.

    *                 EDiagEngineCallHandlerStateBusy if in call.

    */

    virtual void CallHandlerStateChangedL( TDiagEngineCallHandlerState aState ) = 0;

    };

#endif // DIAGENGINECALLHANDLEROBSERVER_H

// End of File