1 /*

     2 * Copyright (c) 2010 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:  Listens for changes in a Central Repository key.

    15 *

    16 */

    17 

    18 #ifndef CENREPOBSERVER_H

    19 #define CENREPOBSERVER_H

    20 

    21 // FORWARD DECLARATIONS

    22 class CRepository;

    23 class MCenRepObserver;

    24 

    25 // Stop requesting new notifications after this many consecutive errors

    26 const TInt KCenRepErrorRetryCount = 80;

    27 

    28 namespace AiXmlUiController

    29 {

    30 

    31 /**

    32 * MCenRepObserver

    33 *

    34 * Client application must implement the CenRepObserver interface in

    35 * order to receive a notification when Central Repository key 

    36 * KCRUidCmManager/ KCurrentCellularDataUsage changes.

    37 *

    38 */

    39 class MCenRepObserver

    40     {

    41 public:

    42     /**

    43     * This method is called every time when Central Repository key 

    44     * KCRUidCmManager/ KCurrentCellularDataUsage changes.

    45     *

    46     * @param aValue The new value for KCurrentCellularDataUsage.

    47     * 

    48     */

    49     virtual void CurrentCellularDataUsageChangedL( const TInt aValue ) = 0;

    50     };

    51 

    52 /**

    53 * CCenRepObserver

    54 *

    55 */

    56 NONSHARABLE_CLASS( CCenRepObserver ) : public CActive

    57     {

    58 public: // Constructors and destructor

    59     static CCenRepObserver* NewL( MCenRepObserver* aObserver );

    60 

    61     static CCenRepObserver* NewLC( MCenRepObserver* aObserver );

    62 

    63     virtual ~CCenRepObserver();

    64 

    65 private:

    66     CCenRepObserver( MCenRepObserver* aObserver );

    67 

    68     void ConstructL();

    69     

    70     /**

    71     * Request notification for network setting change

    72     */

    73     void RequestNotifications();

    74  

    75 private: // Methods from base class

    76     void DoCancel();

    77     void RunL();

    78 

    79 private:

    80     /**

    81     * Cenrep Observer. Not own

    82     */

    83     MCenRepObserver*   iObserver;

    84     

    85     /**

    86     * Cenrep repository. Own

    87     */

    88     CRepository*       iRepository;

    89     

    90     /**

    91     * Cenrep read error count.

    92     */

    93     TInt               iErrorCounter;

    94     };

    95 }// namespace AiXmlUiController

    96 #endif // AOCENREPOBSERVER_H

    97 

    98 // End-of-file