srsf/vcommandhandler/src/intpropertywatcher.cpp
branchRCL_3
changeset 19 e36f3802f733
parent 0 bf1d17376201
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/srsf/vcommandhandler/src/intpropertywatcher.cpp	Wed Sep 01 12:29:17 2010 +0100
@@ -0,0 +1,77 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Watches for the integer P&S property and notifies observer
+* 		 about the changes
+*
+*/
+
+
+#include "rubydebug.h"
+#include "intpropertywatcher.h"
+
+CIntPropertyWatcher* CIntPropertyWatcher::NewL( const TUid aCategory, TUint aKey, 
+                                    MIntChangeNotifiable& aObserver )
+    {
+    CIntPropertyWatcher* self = new (ELeave) CIntPropertyWatcher( aObserver );
+    CleanupStack::PushL( self );
+    self->ConstructL( aCategory, aKey );
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+CIntPropertyWatcher::CIntPropertyWatcher( MIntChangeNotifiable& aObserver )
+    :CActive( CActive::EPriorityStandard ), iObserver( aObserver )
+    {}
+
+void CIntPropertyWatcher::ConstructL( const TUid aCategory, TUint aKey )
+    {
+    User::LeaveIfError( iProperty.Attach( aCategory, aKey ) );
+    CActiveScheduler::Add(this);
+    // initial subscription
+    iProperty.Subscribe(iStatus);
+    SetActive();
+    }
+
+CIntPropertyWatcher::~CIntPropertyWatcher()
+    {
+    Cancel();
+    iProperty.Close();
+    }
+
+void CIntPropertyWatcher::DoCancel()
+    {
+    iProperty.Cancel();
+    }
+
+void CIntPropertyWatcher::RunL()
+    {
+    RUBY_DEBUG_BLOCKL( "" );
+    // resubscribe before processing new value to prevent missing updates
+    iProperty.Subscribe(iStatus);
+    SetActive();    
+    // property updated, get new value
+    TInt newValue;
+    if (iProperty.Get( newValue ) == KErrNotFound )
+        {
+        RUBY_DEBUG0( "Property deleted or was never defined, ignoring" );
+        }
+    else
+        {
+        iObserver.IntValueChanged( newValue );
+        }
+    }
+    
+
+    
+//End of file