1 /*

     2 * Copyright (c) 2004 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:  Publish & Subscribe system keys change observer

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef CIMPSSYSTEMNOTFIER_H

    21 #define CIMPSSYSTEMNOTFIERSYSTEMAGENT_H

    22 

    23 //  INCLUDES

    24 

    25 #include "MIMPSSystemNotifier.h"

    26 #include "MIMPSPropertyNotificationObserver.h"

    27 

    28 // FORWARD DECLARATIONS

    29 class MIMPSSystemNotifierObserver;

    30 class CIMPSPropertyObserver;

    31 

    32 // CLASS DECLARATION

    33 

    34 /**

    35 *  Implementation of the Publish & Subscribe system keys change observer

    36 *

    37 *  @since 2.6

    38 */

    39 NONSHARABLE_CLASS( CIMPSSystemNotifierPubSub ) : public MIMPSSystemNotifier,

    40         public MIMPSPropertyNotificationObserver

    41     {

    42 public:  // Constructors and destructor

    43 

    44     /**

    45     * Two-phased constructor.

    46     * @param aObserver Observer to be informed when observed system key changes

    47     */

    48     static CIMPSSystemNotifierPubSub* NewL( MIMPSSystemNotifierObserver& aObserver,

    49     const TUid aKey );

    50 

    51     /**

    52     * Destructor.

    53     */

    54     virtual ~CIMPSSystemNotifierPubSub();

    55 

    56 protected:     // from MIMPSSystemNotifier

    57 

    58     /**

    59     * @see MIMPSSystemNotifier

    60     */

    61     TInt Subscribe();

    62 

    63     /**

    64     * @see MIMPSSystemNotifier

    65     */

    66     void UnSubscribe();

    67 

    68     /**

    69     * @see MIMPSSystemNotifier

    70     */

    71     TInt GetIntKey( TInt& aValue );

    72 

    73 protected:  // from MIMPSPropertyNotificationObserver.h

    74 

    75     void HandlePropertyNotificationEventL( TUid aCategory, TUint aKey );

    76 

    77 private:

    78 

    79     /**

    80     * C++ default constructor.

    81     */

    82     CIMPSSystemNotifierPubSub( MIMPSSystemNotifierObserver& aObserver,

    83                                const TUid aKey );

    84 

    85     /**

    86     * Symbian 2nd phase constructor..

    87     */

    88     void ConstructL();

    89 

    90 private:    // Data

    91     // Observers property sets, owned

    92     CIMPSPropertyObserver* iPropertyObserver;

    93 

    94     // Observer to be informed when value of system key changes

    95     MIMPSSystemNotifierObserver& iObserver;

    96 

    97     // the key this observer is attached

    98     TUid iKey;

    99 

   100     };

   101 

   102 #endif      // CIMPSSYSTEMNOTFIERSYSTEMAGENT_H

   103 

   104 // End of File