1 /*

     2 * Copyright (c) 2008 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:  Implementation of CHSPSBRObserver class

    15 *

    16 */

    17 

    18 

    19 #include <sbdefs.h>

    20 #include "hspsbrobserver.h"

    21 #include "hspsthemeserver.h"

    22 

    23 

    24 // ======== LOCAL FUNCTIONS ====================================================

    25 

    26 

    27 // ======== MEMBER FUNCTIONS ===================================================

    28 

    29 

    30 // -----------------------------------------------------------------------------

    31 // CHSPSBRObserver::CHSPSBRObserver

    32 // C++ default constructor can NOT contain any code, that

    33 // might leave.

    34 // -----------------------------------------------------------------------------

    35 //

    36 CHSPSBRObserver::CHSPSBRObserver( ChspsThemeServer& aServer ):

    37     CActive(CActive::EPriorityStandard),

    38     iServer( aServer )

    39     {

    40     CActiveScheduler::Add( this );

    41     }

    42 

    43 // -----------------------------------------------------------------------------

    44 // CHSPSBRObserver::ConstructL

    45 // Symbian 2nd phase constructor can leave.

    46 // -----------------------------------------------------------------------------

    47 //

    48 void CHSPSBRObserver::ConstructL()

    49     {

    50     User::LeaveIfError( iProperty.Attach( 

    51         KUidSystemCategory, 

    52         conn::KUidBackupRestoreKey ) );

    53     }

    54                     

    55 // -----------------------------------------------------------------------------

    56 // CHSPSBRObserver::NewL

    57 // Two-phased constructor.

    58 // -----------------------------------------------------------------------------

    59 //

    60 CHSPSBRObserver* CHSPSBRObserver::NewL( ChspsThemeServer& aServer )

    61     {

    62     CHSPSBRObserver* self = new( ELeave ) CHSPSBRObserver( aServer );

    63     

    64     CleanupStack::PushL( self );

    65     self->ConstructL();

    66     CleanupStack::Pop( self );

    67 

    68     return self;

    69     }

    70 

    71     

    72 // Destructor

    73 CHSPSBRObserver::~CHSPSBRObserver()

    74     {

    75     Cancel();

    76     iProperty.Close();

    77     }

    78 

    79 

    80 // -----------------------------------------------------------------------------

    81 // CHSPSBRObserver::Start

    82 // Start the system agent to listen to the event

    83 // (other items were commented in a header).

    84 // -----------------------------------------------------------------------------

    85 //

    86 void CHSPSBRObserver::Start()

    87     {

    88     Cancel();

    89     iProperty.Subscribe( iStatus );

    90     SetActive();

    91     }

    92 

    93 

    94 // -----------------------------------------------------------------------------                        

    95 // CHSPSBRObserver::RunError

    96 // -----------------------------------------------------------------------------

    97 //  

    98 TInt CHSPSBRObserver::RunError(TInt aError)

    99     {

   100     if( aError != KErrCancel )

   101         {

   102         Start();           

   103         }

   104     else 

   105         {

   106         Cancel();

   107         iProperty.Close();    

   108         }

   109     return KErrNone;

   110     };

   111 

   112 

   113 // -----------------------------------------------------------------------------

   114 // CHSPSBRObserver::RunL

   115 // from CActive

   116 // (other items were commented in a header).

   117 // -----------------------------------------------------------------------------

   118 //

   119 void CHSPSBRObserver::RunL()

   120     {

   121     // Resubscribe before processing new value to prevent missing updates

   122     TInt backupStatus = 0;

   123     TInt err( iStatus.Int() );

   124     if ( err == KErrNone )

   125         {

   126         Start();

   127         User::LeaveIfError( iProperty.Get( 

   128                 KUidSystemCategory, 

   129                 conn::KUidBackupRestoreKey, backupStatus ) );

   130         // Forward backup status to listening server

   131         iServer.HandleBREventL( backupStatus );

   132         }

   133     else if ( err != KErrCancel ) // Ignore all errors except cancel

   134         {

   135         Start();

   136         }

   137     else // When cancel occurs, stop everything

   138         {

   139         User::Leave( KErrCancel );    

   140         }

   141     }

   142 

   143 // -----------------------------------------------------------------------------

   144 // CHSPSBRObserver::DoCancel

   145 // From CActive

   146 // (other items were commented in a header).

   147 // -----------------------------------------------------------------------------

   148 //

   149 void CHSPSBRObserver::DoCancel()

   150     {

   151     iProperty.Cancel();

   152     }

   153 

   154 // End of file