1 /*

     2 * Copyright (c) 2002-2007 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:  

    15 *

    16 */

    17 

    18 

    19 #include "scppropertynotifier.h"

    20 #include "scplogger.h"

    21 #include "scppropertyobserver.h"

    22 

    23 // -----------------------------------------------------------------------------

    24 // CScpPropertyNotifier::CCScpPropertyNotifier

    25 // -----------------------------------------------------------------------------

    26 //

    27 CScpPropertyNotifier::CScpPropertyNotifier( TUid aUid, 

    28                                             TInt aType, 

    29                                             MScpPropertyObserver& aObserver ) :

    30     CActive( CActive::EPriorityStandard ),

    31     iUid( aUid ),

    32     iType( aType ),

    33     iObserver( aObserver )

    34     {

    35     SCPLOGSTRING( "CScpPropertyNotifier::CScpPropertyNotifier" );

    36 

    37     CActiveScheduler::Add( this );

    38     }

    39 

    40 // -----------------------------------------------------------------------------

    41 // CScpPropertyNotifier::ConstructL

    42 // -----------------------------------------------------------------------------

    43 //

    44 void CScpPropertyNotifier::ConstructL()

    45     {

    46     SCPLOGSTRING( "CScpPropertyNotifier::ConstructL" );

    47     

    48     User::LeaveIfError( iProperty.Attach( iUid, iType ) );

    49 

    50     Subscribe();

    51     }

    52 

    53 // -----------------------------------------------------------------------------

    54 // CScpPropertyNotifier::NewL

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

    56 //

    57 CScpPropertyNotifier* CScpPropertyNotifier::NewL( TUid aUid, 

    58                                                   TInt aType,

    59                                                   MScpPropertyObserver& aObserver )

    60     {

    61     SCPLOGSTRING( "CScpPropertyNotifier::NewL" );

    62     

    63     CScpPropertyNotifier* self = new(ELeave) CScpPropertyNotifier( aUid, 

    64                                                                    aType,

    65                                                                    aObserver );

    66     CleanupStack::PushL( self );    

    67     self->ConstructL();    

    68     CleanupStack::Pop( self );

    69     return self;

    70     }

    71 

    72 // -----------------------------------------------------------------------------

    73 // CScpPropertyNotifier::~CScpPropertyNotifier

    74 // -----------------------------------------------------------------------------

    75 //

    76 CScpPropertyNotifier::~CScpPropertyNotifier()

    77     {

    78     SCPLOGSTRING( "CScpPropertyNotifier::~CScpPropertyNotifier" );

    79     

    80     Cancel();

    81     iProperty.Close();

    82     }

    83 

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

    85 // CScpPropertyNotifier::GetValue

    86 // -----------------------------------------------------------------------------

    87 //

    88 TInt CScpPropertyNotifier::GetValue( TInt& aValue ) const

    89     {

    90     SCPLOGSTRING( "CScpPropertyNotifier::GetValue" );

    91     

    92     return iProperty.Get( iUid, iType, aValue );

    93     }

    94 

    95 // -----------------------------------------------------------------------------

    96 // CScpPropertyNotifier::Subscribe

    97 // -----------------------------------------------------------------------------

    98 //

    99 void CScpPropertyNotifier::Subscribe()

   100     {

   101     SCPLOGSTRING( "CScpPropertyNotifier::Subscribe" );      

   102     __ASSERT_DEBUG(!IsActive(), User::Panic( KNullDesC, KErrGeneral ) );

   103 

   104     if ( !IsActive() )

   105         {

   106         iProperty.Subscribe( iStatus );    

   107         SetActive();

   108         }

   109     }

   110 

   111 // -----------------------------------------------------------------------------

   112 // CScpPropertyNotifier::RunL

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

   114 //

   115 void CScpPropertyNotifier::RunL()

   116     {

   117     SCPLOGSTRING( "CScpPropertyNotifier::RunL" );

   118 

   119     if( iStatus.Int() == KErrNone )

   120         {        

   121         TInt value = 0;

   122         GetValue( value );

   123 

   124         iObserver.HandlePropertyChanged( value );

   125         }

   126 

   127     Subscribe();            

   128     }

   129 

   130 // -----------------------------------------------------------------------------

   131 // CScpPropertyNotifier::NewL

   132 // -----------------------------------------------------------------------------

   133 //

   134 #ifdef _DEBUG

   135 TInt CScpPropertyNotifier::RunError( TInt aError )

   136     {

   137     SCPLOGSTRING2( "CScpPropertyNotifier::RunError: %d", aError );

   138 #else

   139 TInt CScpPropertyNotifier::RunError( TInt /*aError*/ )

   140     {

   141 #endif

   142     // Errors are disarded

   143     return KErrNone;

   144     }

   145 

   146 // -----------------------------------------------------------------------------

   147 // CScpPropertyNotifier::NewL

   148 // -----------------------------------------------------------------------------

   149 //

   150 void CScpPropertyNotifier::DoCancel()

   151     {

   152     SCPLOGSTRING( "CScpPropertyNotifier::DoCancel" );

   153     

   154     iProperty.Cancel();

   155     }

   156 

   157 //  End of File