1 /*

     2 * Copyright (c) 2007 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:  Channel change handler

    15 *

    16 */

    17 

    18 

    19 #ifndef CSENSRVCHANNELCHANGEHANDLER_H

    20 #define CSENSRVCHANNELCHANGEHANDLER_H

    21 

    22 

    23 #include <e32base.h>

    24 #include "sensrvclient.h"

    25 #include "sensrvchannelinfo.h"

    26 

    27 class MSensrvChannelChangeHandlerObserver;

    28 

    29 /**

    30  *  Channel Change handler class

    31  *

    32  *  @lib sensrvclient.lib

    33  *  @since S60 5.0

    34  */

    35 NONSHARABLE_CLASS( CSensrvChannelChangeHandler ) : public CActive

    36     {

    37     public:

    38 

    39         static CSensrvChannelChangeHandler* NewL( RSensrvClient& aSensrvClient );

    40 

    41         static CSensrvChannelChangeHandler* NewLC( RSensrvClient& aSensrvClient );

    42 

    43         /**

    44         * Destructor

    45         */

    46         virtual ~CSensrvChannelChangeHandler();        

    47     

    48     public:

    49     

    50         /**

    51         * Start channel change listening. Send request to server.

    52         * 

    53         * @since S60 5.0

    54         * @param aChannelChangeObserver Channel change observer

    55         * @param aSearchParameters Search parameters.

    56         */

    57         void StartListening( MSensrvChannelChangeHandlerObserver* aChannelChangeObserver,

    58                              const TSensrvChannelInfo& aSearchParameters );

    59         

    60     protected: // From CActive

    61 

    62           void DoCancel();

    63           void RunL();

    64           TInt RunError(TInt aError);

    65 

    66     private:

    67 

    68         /**

    69         * Constructor

    70         */

    71         CSensrvChannelChangeHandler( RSensrvClient& aSensrvClient );

    72 

    73         /**

    74         * Create and send request to server

    75         */

    76         void CreateAndSendRequest();

    77 

    78 

    79     private: // data

    80         

    81         /**

    82         * Client

    83         * Not own.

    84         */

    85         RSensrvClient& iSensrvClient;

    86         

    87         /**

    88         * Observer

    89         * Not own.         

    90         */

    91         MSensrvChannelChangeHandlerObserver* iObserver;       

    92        

    93         /**

    94         * Server writes channel info of new or removed channel here.

    95         */

    96         TSensrvChannelInfoPckgBuf iChannelInfoPckgBuf;

    97         

    98         /**

    99         * Server writes type of change here.

   100         */

   101         TSensrvTSensrvChannelChangeTypePckgBuf iChangeTypePckgBuf;

   102         

   103         /**

   104         * Error count

   105         */

   106         TInt iErrorCount;

   107         

   108         /**

   109         * Stores the current search parameters.

   110         */

   111         TSensrvChannelInfoPckgBuf iSearchParameterBuf;

   112     };

   113     

   114 #endif // CSENSRVCHANNELCHANGEHANDLER_H