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:  System Agent keys change observer

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef CIMPSSYSTEMNOTFIERSYSTEMAGENT_H

    21 #define CIMPSSYSTEMNOTFIERSYSTEMAGENT_H

    22 

    23 //  INCLUDES

    24 #include <e32base.h>        // CActive

    25 #include <saclient.h>       // RSystemAgent

    26 

    27 #include "MIMPSSystemNotifier.h"

    28 

    29 // FORWARD DECLARATIONS

    30 class MIMPSSystemNotifierObserver;

    31 

    32 // CLASS DECLARATION

    33 

    34 /**

    35 *  Implementation of the System Agent change observer

    36 *

    37 *  @since 2.6

    38 */

    39 NONSHARABLE_CLASS( CIMPSSystemNotifierSystemAgent ) : public CActive,

    40         public MIMPSSystemNotifier

    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 CIMPSSystemNotifierSystemAgent* NewL( MIMPSSystemNotifierObserver& aObserver,

    49     const TUid aKey );

    50 

    51     /**

    52     * Destructor.

    53     */

    54     virtual ~CIMPSSystemNotifierSystemAgent();

    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:  // Functions from base classes

    74 

    75     /**

    76     * From CActive

    77     */

    78     void RunL();

    79 

    80     /**

    81     * From CActive

    82     */

    83     void DoCancel();

    84 

    85 private:

    86 

    87     /**

    88     * C++ default constructor.

    89     */

    90     CIMPSSystemNotifierSystemAgent( MIMPSSystemNotifierObserver& aObserver,

    91                                     const TUid aKey );

    92 

    93     /**

    94     * Symbian 2nd phase constructor..

    95     */

    96     void ConstructL();

    97 

    98 private:    // Data

    99 

   100     // Owns: System Agent

   101     RSystemAgent iSysAgent;

   102 

   103     // Call event stored here

   104     TSysAgentEvent iAgentEvent;

   105 

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

   107     MIMPSSystemNotifierObserver& iObserver;

   108 

   109     // the key this observer is attached

   110     TUid iKey;

   111 

   112     };

   113 

   114 #endif      // CIMPSSYSTEMNOTFIERSYSTEMAGENT_H

   115 

   116 // End of File