/*

 * Copyright (c) 2009 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: Telephony Multimedia Service

 *

 */

#ifndef TMSDTMFOBSERVER_H

#define TMSDTMFOBSERVER_H

#include <e32base.h>

namespace TMS {

/**

 * CCP DTMF related events observer class.

 * This class is used for notifying DTMF specific events.

 */

class TMSDTMFObserver

    {

public:

    /** DTMF Events */

    enum TCCPDtmfEvent

        {

        /** Unknown */

        ECCPDtmfUnknown = 0,

        /** DTMF sending started manually */

        ECCPDtmfManualStart = 5,

        /** DTMF sending stopped manually */

        ECCPDtmfManualStop = 6,

        /** DTMF sending aborted manually */

        ECCPDtmfManualAbort = 7,

        /** Automatic DTMF sending initialized */

        ECCPDtmfSequenceStart = 9,

        /** Automatic DTMF sending stopped */

        ECCPDtmfSequenceStop = 10,

        /** Automatic DTMF sending aborted */

        ECCPDtmfSequenceAbort = 11,

        /** There was stop mark in DTMF string */

        ECCPDtmfStopInDtmfString,

        /** DTMF sending completed succesfully */

        ECCPDtmfStringSendingCompleted

        };

    //protected:

    /**

     * Protects the observer being deleted through the observer interface.

     */

    //virtual inline ~TMSDTMFObserver() {};

public:

    /**

     * HandleDTMFEvents.

     * @param event Event type

     * @param status Error code

     * @param tone Character

     * @return none

     */

    virtual void HandleDTMFEvent(const TMSDTMFObserver::TCCPDtmfEvent event,

            const gint status, const TChar tone) /*const*/ = 0;

    };

} //namespace TMS

#endif // TMSDTMFOBSERVER_H

// End of File