/*

* 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:  ConnMon Dual Transfer Mode watcher.

*

*/

#ifndef CONNMONDTMNOTI_H

#define CONNMONDTMNOTI_H

#include <etelpckt.h>

/**

* Connection Monitor Server Dual Transfer Mode watcher observer.

* @lib CONNMON.LIB

*/

class MConnMonDtmNotifierObserver

    {

public:

    /**

     * Informs the observer of a change in DTM

     */

    virtual void DtmStateChanged() = 0;

    };

/**

* Connection Monitor Server Dual Transfer Mode watcher.

* @lib CONNMON.LIB

*/

NONSHARABLE_CLASS( CConnMonDtmNotifier ) : public CActive

    {

public:

    /**

     * Two-phased constructor.

     *

     * @param aPacketService A pointer to a RPacketService instance, which has

     * been initialized fully.

     * @param aObserver A refernce to the observer which wants to listen to the

     * notifications.

     *

     * @return An initialized instance of this class.

     */

    static CConnMonDtmNotifier* NewL(

            RPacketService& aPacketService,

            MConnMonDtmNotifierObserver& aObserver );

    /**

     * Destructor.

     */

    virtual ~CConnMonDtmNotifier();

public:

    /**

     * Checks if there is support for Dual Transfer Mode.

     * @return ETrue support for DTM exists, otherwise EFalse.

     */

    TBool IsInDualMode() const;

    /**

     * Starts to notify client of the events

     */

    void Receive();

    /**

     * Cancels notifying the the events

     * @since

     */

    void CancelNotifications();

protected:

    /**

     * From CActive. Cancels request.

     */

    void DoCancel();

    /**

     * From CActive. Run when request completes.

     */

    void RunL();

private:

    /**

     * Constructor.

     *

     * @param aPacketService A pointer to a RPacketService instance, which has

     * been initialized fully.

     * @param aObserver A refernce to the observer which wants to listen to the

     * notifications.

     */

    CConnMonDtmNotifier(

            RPacketService& aPacketService,

            MConnMonDtmNotifierObserver& aObserver );

    /**

     * 2nd phase constructor.

     */

    void ConstructL();

private:

    RPacketService& iPacketService;

    RPacketService::TMSClass iMsClass;

    RPacketService::TMSClass iMaxMsClass;

    MConnMonDtmNotifierObserver& iObserver;

    TBool iSendEvents;

    };

#endif // CONNMONDTMNOTI_H

// End-of-file