/*

* Copyright (c) 2006 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:  CCP Call transfer observer

*

*/

#ifndef MCCPTRANSFEROBSERVER_H

#define MCCPTRANSFEROBSERVER_H

// INCLUDES

#include <e32base.h>

/**

* CCP API call transfer observer class

*

*  @since S60 3.2

*/

class MCCPTransferObserver

    {

public: 

    enum TCCPTransferEvent

       {

       /** Call has been transferred to another remote party as a result of a local action. 

       This is the result of transfer being succesfully completed */

       ECCPLocalTransfer,

       /** Outgoing call is transfering. The transfer request has now been accepted by the current call recipient. */

       ECCPRemoteTransferring,

       /** Outgoing transfer call is alerting. Current call recipinet has sent connection request to transfer target*/

       ECCPRemoteTransferAlerting

       };

protected:

    /** 

    * Protects the observer being deleted through the observer interface 

    * @since S60 3.2

    */

    virtual inline ~MCCPTransferObserver() {};

public:

    /**

    * A transfer event has occurred concerning a specific call.

    * @since S60 3.2

    * @param aEvent Occurred event.

    * @return none

    */

    virtual void TransferEventOccurred( 

                 const MCCPTransferObserver::TCCPTransferEvent aEvent ) = 0;

    };

#endif // MCCPTRANSFEROBSERVER_H

// End of File