/*

* Copyright (c) 2005-2009 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:

*

*/

#ifndef BTGPSNOKGPSDETECTOR_H

#define BTGPSNOKGPSDETECTOR_H

//  INCLUDES

#include <e32base.h> 

#include "BTGPSMessageListener.h"

// CONSTANTS

// MACROS

// DATA TYPES

// FUNCTION  PROTOTYPES

// FORWARD DECLARATIONS

class CBTGPSConnectManager;

class CBTGPSDeviceManager;

// CLASS DECLARATION

/**

*  This class defines a object that detect if the connect BT device support

*  Nokia proprietary sentence by sending PNok message. If the device replies 

*  the questing correctly, then the device is considered to be BT GPS device 

*  that support Nokia proprietary feature.

*

*/

class CBTGPSNokGpsDetector: public CBase, private MBTGPSMessageListener

    {

    public: 

        /**

        * Two-phase construction.

		* @param aConnectManager Reference to connect manager.

		* @param aDeviceManager Reference to device manager

        */

        static CBTGPSNokGpsDetector * NewL(

            CBTGPSConnectManager& aConnectManager,

            CBTGPSDeviceManager& aDeviceManager);

        /**

        * Destructor

        */

        virtual ~CBTGPSNokGpsDetector();

        /**

        * Detect

        */

        TInt Detect();

        /**

        * Cancel detecting

        */

        void Cancel();

    private:

        /**

        * From MBTGPSMessageListener

        */

        virtual void HandleMessage(const TBTGPSNmeaParser& aParser);

    private:

        /**

        * Second phase of the construction

        */

        void ConstructL();

        /**

        * Private constructor

        */

        CBTGPSNokGpsDetector(

            CBTGPSConnectManager& aConnectManager,

            CBTGPSDeviceManager& aDeviceManager);

        /**

        * Timer callback

        */

        void TimerTick();

        /**

        * Start detecting

        */

        void DetectL();

        /**

        * Static timer callback

        */

        static TInt TimerCallBack(TAny* aAny);

    private:

        //Connect Manager

        CBTGPSConnectManager& iConnectManager;

        //Device manager

        CBTGPSDeviceManager& iDeviceManager;

        //Timer

        CPeriodic* iTimer;

        //Number of valide nmea messages received

        TInt iValidNmeaMsg;

        //Number of PNOK polling message sent

        TInt iNumPnokPolling;

        //Switch to NMEA mode count

        TInt iSwitchCount;

    };

#endif

// End of File