// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).+
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// All rights reserved.+
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// This component and the accompanying materials are made available+
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// under the terms of "Eclipse Public License v1.0"+
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// which accompanies this distribution, and is available+
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".+
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//+
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// Initial Contributors:+
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// Nokia Corporation - initial contribution.+
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//+
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// Contributors:+
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//+
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// Description:+
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//+
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+
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#include "pspropertyobserver.h"+
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+
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CPsPropertyObserver* CPsPropertyObserver::NewL(const TUid& aGroup, TInt aKey, MPsPropertyObserver& aObserver)+
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	{+
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	CPsPropertyObserver* self = new(ELeave) CPsPropertyObserver(aKey,aObserver);+
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	CleanupStack::PushL(self);+
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	self->ConstructL(aGroup);+
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	CleanupStack::Pop(self);+
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	return self;+
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	}+
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+
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CPsPropertyObserver::CPsPropertyObserver(TInt aKey, MPsPropertyObserver& aObserver)+
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	:CActive(EPriorityNormal),+
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	iKey(aKey),+
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	iObserver(aObserver)+
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	{+
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	}+
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+
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void CPsPropertyObserver::ConstructL(const TUid& aGroup)+
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	{+
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	User::LeaveIfError(iProperty.Attach(aGroup,iKey));+
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	CActiveScheduler::Add(this);+
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	// initial subscription and process current property value+
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	Start();+
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	}+
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+
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CPsPropertyObserver::~CPsPropertyObserver()+
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	{+
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	Cancel();+
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	iProperty.Close();+
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	}+
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+
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void CPsPropertyObserver::DoCancel()+
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	{+
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	iProperty.Cancel();+
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	}+
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+
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void CPsPropertyObserver::RunL()+
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	{+
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	iProperty.Get(iValue);	+
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	iObserver.PsPropertyChanged(iKey,iValue);+
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	// resubscribe+
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	Start();+
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	}+
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+
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void CPsPropertyObserver::Start()+
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	{+
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	if (IsActive())+
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		{+
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		Cancel();+
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		}+
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	+
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	iProperty.Subscribe(iStatus);+
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	SetActive();		+
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	}+
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