resourcemgmt/hwresourcesmgr/common/src/pspropertyobserver.cpp
changeset 0 4e1aa6a622a0
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/resourcemgmt/hwresourcesmgr/common/src/pspropertyobserver.cpp	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,85 @@
+// Copyright (c) 2007-2009 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 "pspropertyobserver.h"
+
+EXPORT_C CPsPropertyObserver* CPsPropertyObserver::NewL(const TUid& aGroup, TInt aKey, MPsPropertyObserver& aObserver)
+	{
+	CPsPropertyObserver* self = new(ELeave) CPsPropertyObserver(aGroup,aKey,aObserver);
+	CleanupStack::PushL(self);
+	self->ConstructL(aGroup);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+CPsPropertyObserver::CPsPropertyObserver(TUid aGroup, TInt aKey, MPsPropertyObserver& aObserver)
+	:CActive(EPriorityNormal),
+	iGroup(aGroup),
+	iKey(aKey),
+	iObserver(aObserver)
+	{
+	}
+
+void CPsPropertyObserver::ConstructL(const TUid& aGroup)
+	{
+	User::LeaveIfError(iProperty.Attach(aGroup,iKey));
+	CActiveScheduler::Add(this);
+	// initial subscription and process current property value
+	Start();
+	}
+
+CPsPropertyObserver::~CPsPropertyObserver()
+	{
+	Cancel();
+	iProperty.Close();
+	}
+
+void CPsPropertyObserver::DoCancel()
+	{
+	iProperty.Cancel();
+	}
+
+void CPsPropertyObserver::RunL()
+	{
+	if(KErrNone == iStatus.Int())
+    {
+    iProperty.Get(iValue);	
+    }
+	iObserver.PsPropertyChanged(iKey,iValue, iStatus.Int());
+	// resubscribe
+	Start();
+	}
+
+void CPsPropertyObserver::Start()
+	{
+	if (IsActive())
+		{
+		Cancel();
+		}
+	
+	iProperty.Subscribe(iStatus);
+	SetActive();		
+	}
+
+EXPORT_C TInt CPsPropertyObserver::Get(const TUid& aGroup, TInt aKey, TInt& value)
+    {
+    return RProperty::Get(aGroup, aKey, value);
+    }
+
+EXPORT_C TInt CPsPropertyObserver::Get(TInt& value)
+    {
+    return Get(iGroup, iKey, value);
+    }
+