1 /*

     2 * Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef BTGPSMESSAGERECEIVER_H

    22 #define BTGPSMESSAGERECEIVER_H

    23 

    24 //  INCLUDES

    25 

    26 #include <e32base.h>

    27 #include <badesca.h>

    28 #include "BTGPSDeviceListener.h"

    29 #include "BTGPSMessageDef.h"

    30 

    31 

    32 // CONSTANTS

    33 /**

    34 * The size of the input buffer size. 

    35 */

    36 const TInt KReadMessageSize = 120;

    37 

    38 // MACROS

    39 

    40 // DATA TYPES

    41 

    42 // FUNCTION PROTOTYPES

    43 

    44 // FORWARD DECLARATIONS

    45 class RSocket;

    46 class MBTGPSMessageListener;

    47 class CBTGPSDeviceManager;

    48 

    49 // CLASS DECLARATION

    50 

    51 /**

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

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

    54 *  message.

    55 *  

    56 */

    57 class CBTGPSMessageReceiver: public CActive, private MBTGPSDeviceListener

    58     {

    59     public: 

    60 

    61         /**

    62         * Two-phase construction.

    63         * @param aSocket Reference to RSocket.

    64         * @param aDeviceManager Reference to device manager.

    65         */

    66         static CBTGPSMessageReceiver * NewL(

    67             RSocket& aSocket,

    68             CBTGPSDeviceManager& aDeviceManager);

    69 

    70         /**

    71         * Destructor

    72         */

    73         virtual ~CBTGPSMessageReceiver();

    74         

    75         /**

    76         * Add message listener

    77         * @param aListener Reference to listener

    78         */

    79         void AddMessageListenerL(MBTGPSMessageListener& aListener);

    80 

    81         /**

    82         * Remove message listener;

    83         * @param aListener Reference to listener

    84         */

    85         void RemoveMessageListener(MBTGPSMessageListener& aListener);

    86         

    87     private:

    88         /**

    89         * From CActive

    90         */

    91         virtual void RunL();

    92         

    93         /**

    94         * From CActive

    95         */

    96         virtual void DoCancel();

    97         

    98         /**

    99         * From CActive

   100         */

   101         virtual TInt RunError(TInt aError);

   102         

   103         /**

   104         * From MDeviceListener

   105         */

   106         virtual void BTDeviceStatusChanged(

   107             TInt aConnectStatus, 

   108             TInt aDeviceType,

   109             TInt aErr=KErrNone);

   110         

   111 

   112     private:

   113 

   114         /**

   115         * Second phase of the construction

   116         */

   117         void ConstructL();

   118         

   119         /**

   120         * Receive message from socket

   121         */

   122         void Receive();

   123         

   124         /**

   125         * Handle received message from RSocket

   126         */

   127         void HandleReceivedMessage();

   128 

   129         /**

   130         * Inform listeners on received NMEA sentence

   131         */

   132         void InformListeners();

   133         

   134         /**

   135         * Private constructor

   136         */

   137         CBTGPSMessageReceiver(

   138             RSocket& aSocket,

   139             CBTGPSDeviceManager& aDeviceManager);

   140             

   141     private:

   142         //Socket

   143         RSocket& iSocket;

   144         

   145         //Device manager

   146         CBTGPSDeviceManager& iDeviceManager;

   147         

   148         //Message listener

   149         RArray<MBTGPSMessageListener*> iListenerArray;

   150         

   151         //Buffer for receiving

   152         TBuf8<KReadMessageSize> iBuffer;

   153         

   154         //Buffer for NMEA message

   155         TBuf8<KMaxNmeaMessageSize> iNmeaBuf;

   156         

   157         //Received message length

   158         TSockXfrLength iRecLen;

   159     };

   160 #endif

   161 // End of File

   162