/*

* 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 BTGPSMESSAGERECEIVER_H

#define BTGPSMESSAGERECEIVER_H

//  INCLUDES

#include <e32base.h>

#include <badesca.h>

#include "BTGPSDeviceListener.h"

#include "BTGPSMessageDef.h"

// CONSTANTS

/**

* The size of the input buffer size. 

*/

const TInt KReadMessageSize = 120;

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class RSocket;

class MBTGPSMessageListener;

class CBTGPSDeviceManager;

// CLASS DECLARATION

/**

*  This class is used to receive message from socket. It contains buffer

*  that store the received message and informs all the listeners on received

*  message.

*  

*/

class CBTGPSMessageReceiver: public CActive, private MBTGPSDeviceListener

    {

    public: 

        /**

        * Two-phase construction.

        * @param aSocket Reference to RSocket.

        * @param aDeviceManager Reference to device manager.

        */

        static CBTGPSMessageReceiver * NewL(

            RSocket& aSocket,

            CBTGPSDeviceManager& aDeviceManager);

        /**

        * Destructor

        */

        virtual ~CBTGPSMessageReceiver();

        /**

        * Add message listener

        * @param aListener Reference to listener

        */

        void AddMessageListenerL(MBTGPSMessageListener& aListener);

        /**

        * Remove message listener;

        * @param aListener Reference to listener

        */

        void RemoveMessageListener(MBTGPSMessageListener& aListener);

    private:

        /**

        * From CActive

        */

        virtual void RunL();

        /**

        * From CActive

        */

        virtual void DoCancel();

        /**

        * From CActive

        */

        virtual TInt RunError(TInt aError);

        /**

        * From MDeviceListener

        */

        virtual void BTDeviceStatusChanged(

            TInt aConnectStatus, 

            TInt aDeviceType,

            TInt aErr=KErrNone);

    private:

        /**

        * Second phase of the construction

        */

        void ConstructL();

        /**

        * Receive message from socket

        */

        void Receive();

        /**

        * Handle received message from RSocket

        */

        void HandleReceivedMessage();

        /**

        * Inform listeners on received NMEA sentence

        */

        void InformListeners();

        /**

        * Private constructor

        */

        CBTGPSMessageReceiver(

            RSocket& aSocket,

            CBTGPSDeviceManager& aDeviceManager);

    private:

        //Socket

        RSocket& iSocket;

        //Device manager

        CBTGPSDeviceManager& iDeviceManager;

        //Message listener

        RArray<MBTGPSMessageListener*> iListenerArray;

        //Buffer for receiving

        TBuf8<KReadMessageSize> iBuffer;

        //Buffer for NMEA message

        TBuf8<KMaxNmeaMessageSize> iNmeaBuf;

        //Received message length

        TSockXfrLength iRecLen;

    };

#endif

// End of File