diff -r 33a5d2bbf6fc -r 73a1feb507fb mmsharing/mmshshared/src/muspropertywatch.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmsharing/mmshshared/src/muspropertywatch.cpp	Tue Aug 31 15:12:07 2010 +0300
@@ -0,0 +1,178 @@
+/*
+* Copyright (c) 2005 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: 
+*
+*/
+
+
+
+#include "muspropertywatch.h"
+#include "muspropertyobserver.h"
+#include "mussessionproperties.h"
+#include "musresourceproperties.h"
+#include "muslogger.h" // debug logging
+
+using namespace NMusSessionApi;
+
+// -----------------------------------------------------------------------------
+// Symbian two-phase constructor.
+// -----------------------------------------------------------------------------
+//
+CMusPropertyWatch* CMusPropertyWatch::NewL(
+                                      MMusPropertyObserver& aObserver,
+                                      TUid aCategory,
+                                      const TInt aPropertyName )
+    {
+    CMusPropertyWatch* self = new (ELeave) CMusPropertyWatch(
+                                            aObserver,
+                                            aCategory,
+                                            aPropertyName );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+
+// -----------------------------------------------------------------------------
+// C++ destructor.
+// -----------------------------------------------------------------------------
+//
+CMusPropertyWatch::~CMusPropertyWatch()
+    {
+    MUS_LOG( "mus: [MUSSH ]  -> CMusPropertyWatch::~CMusPropertyWatch" );
+    if ( IsActive() )
+        {
+        Cancel();
+        }
+    iProperty.Close();
+    MUS_LOG( "mus: [MUSSH ]  <- CMusPropertyWatch::~CMusPropertyWatch" );
+    }
+
+
+// -----------------------------------------------------------------------------
+// C++ constructor.
+// -----------------------------------------------------------------------------
+//
+CMusPropertyWatch::CMusPropertyWatch( MMusPropertyObserver& aObserver,
+                                          TUid aCategory,
+                                          const TInt aPropertyName ) :
+    CActive( EPriorityNormal ),
+    iObserver( aObserver )
+    {
+    iPropertyCategory = aCategory;
+    iPropertyKey = aPropertyName;
+    }
+
+
+// -----------------------------------------------------------------------------
+// Symbian second-phase constructor.
+// -----------------------------------------------------------------------------
+//
+void CMusPropertyWatch::ConstructL( )
+    {
+    MUS_LOG( "mus: [MUSSH ]  -> CMusPropertyWatch::ConstructL" );
+    User::LeaveIfError( iProperty.Attach( iPropertyCategory,
+                                          iPropertyKey) );
+    CActiveScheduler::Add( this );
+    
+    iProperty.Subscribe( iStatus );
+    SetActive();
+    
+    MUS_LOG( "mus: [MUSSH ]  <- CMusPropertyWatch::ConstructL" );
+    }
+
+
+// -----------------------------------------------------------------------------
+//
+// -----------------------------------------------------------------------------
+//
+TInt CMusPropertyWatch::ReadIntPropertyL( TUint aKey )
+    {
+    MUS_LOG1( "mus: [MUSSH ]     -> CMusPropertyWatch::ReadIntPropertyL: aKey: [%d]",
+                            aKey );
+    TInt val;
+    User::LeaveIfError( RProperty::Get( KCategoryUid,
+                                        aKey,
+                                        val ) );
+    MUS_LOG1( "mus: [MUSSH ]     <- CMusPropertyWatch::ReadIntPropertyL: val: [%d]",
+                            val );
+    return val;
+    }
+
+
+// -----------------------------------------------------------------------------
+//
+// -----------------------------------------------------------------------------
+//
+HBufC* CMusPropertyWatch::ReadDescPropertyL( TUint aKey )
+    {
+    MUS_LOG1( "mus: [MUSSH ]     -> CMusPropertyWatch::ReadDescPropertyL: aKey: [%d]",
+                            aKey );
+    TBuf<RProperty::KMaxPropertySize> buffer;
+
+    User::LeaveIfError( RProperty::Get( KCategoryUid,
+                                        aKey,
+                                        buffer ) );
+    HBufC* desc = buffer.AllocL();
+    MUS_LOG_TDESC( "mus: [MUSSH ]    <- CMusPropertyWatch::ReadDescPropertyL: val: ",
+                            (*desc) );
+    return desc;
+    }
+
+
+// -----------------------------------------------------------------------------
+//
+// -----------------------------------------------------------------------------
+//
+void CMusPropertyWatch::DoCancel()
+    {
+    MUS_LOG( "mus: [MUSSH ]  -> CMusPropertyWatch::DoCancel" );
+    iProperty.Cancel();
+    MUS_LOG( "mus: [MUSSH ]  <- CMusPropertyWatch::DoCancel" );
+    }
+
+
+// -----------------------------------------------------------------------------
+//
+// -----------------------------------------------------------------------------
+//
+void CMusPropertyWatch::RunL()
+    {
+    MUS_LOG( "mus: [MUSSH ]  -> CMusPropertyWatch::RunL" );
+    TInt val;
+
+    User::LeaveIfError( RProperty::Get( iPropertyCategory,
+                                        iPropertyKey,
+                                        val ) );
+
+    iObserver.PropertyChanged( iPropertyKey, val );
+    MUS_LOG( "mus: [MUSSH ]  <- CMusPropertyWatch::RunL" );
+    }
+
+
+// -----------------------------------------------------------------------------
+//
+// -----------------------------------------------------------------------------
+//
+TInt CMusPropertyWatch::RunError( TInt aError )
+    {
+    MUS_LOG1( "mus: [MUSSH ]     -> CMusPropertyWatch::RunError [%d]", aError );
+    iObserver.HandlePropertyError( aError );
+    MUS_LOG( "mus: [MUSSH ]  <- CMusPropertyWatch::RunError" );
+    return KErrNone;
+    }
+
+
+// end of file