1 /*

     2 * Copyright (c) 2006 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:  Watches for the integer P&S property and notifies observer

    15 * 		 about the changes

    16 *

    17 */

    18 

    19 

    20 #include "rubydebug.h"

    21 #include "intpropertywatcher.h"

    22 

    23 CIntPropertyWatcher* CIntPropertyWatcher::NewL( const TUid aCategory, TUint aKey, 

    24                                     MIntChangeNotifiable& aObserver )

    25     {

    26     CIntPropertyWatcher* self = new (ELeave) CIntPropertyWatcher( aObserver );

    27     CleanupStack::PushL( self );

    28     self->ConstructL( aCategory, aKey );

    29     CleanupStack::Pop( self );

    30     return self;

    31     }

    32 

    33 CIntPropertyWatcher::CIntPropertyWatcher( MIntChangeNotifiable& aObserver )

    34     :CActive( CActive::EPriorityStandard ), iObserver( aObserver )

    35     {}

    36 

    37 void CIntPropertyWatcher::ConstructL( const TUid aCategory, TUint aKey )

    38     {

    39     User::LeaveIfError( iProperty.Attach( aCategory, aKey ) );

    40     CActiveScheduler::Add(this);

    41     // initial subscription

    42     iProperty.Subscribe(iStatus);

    43     SetActive();

    44     }

    45 

    46 CIntPropertyWatcher::~CIntPropertyWatcher()

    47     {

    48     Cancel();

    49     iProperty.Close();

    50     }

    51 

    52 void CIntPropertyWatcher::DoCancel()

    53     {

    54     iProperty.Cancel();

    55     }

    56 

    57 void CIntPropertyWatcher::RunL()

    58     {

    59     RUBY_DEBUG_BLOCKL( "" );

    60     // resubscribe before processing new value to prevent missing updates

    61     iProperty.Subscribe(iStatus);

    62     SetActive();    

    63     // property updated, get new value

    64     TInt newValue;

    65     if (iProperty.Get( newValue ) == KErrNotFound )

    66         {

    67         RUBY_DEBUG0( "Property deleted or was never defined, ignoring" );

    68         }

    69     else

    70         {

    71         iObserver.IntValueChanged( newValue );

    72         }

    73     }

    74     

    75 

    76     

    77 //End of file