srsf/vcommandhandler/inc/intpropertywatcher.h
author Pat Downey <patd@symbian.org>
Wed, 01 Sep 2010 12:29:17 +0100
branchRCL_3
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permissions -rw-r--r--
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/*
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* Copyright (c) 2006 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:  Watches for the integer P&S property and notifies the observer
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*                about the changes
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*
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*/
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#ifndef INTPROPERTYWATCHER_H
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#define INTPROPERTYWATCHER_H
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#include <e32property.h>
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#include <e32base.h>
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/**
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 * Interface for those who want to be notified about the property change
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 */
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class MIntChangeNotifiable
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    {
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    public:
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        virtual void IntValueChanged(TInt aNewValue) = 0;
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    };
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/**
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 * After the creation watches for the given Publish & Subscribe property
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 * changes and notifies the observer about the changes
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 */
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class CIntPropertyWatcher : public CActive
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    {
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    public:
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        static CIntPropertyWatcher* NewL( const TUid aCategory, TUint aKey, 
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                                        MIntChangeNotifiable& aObserver );
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        virtual ~CIntPropertyWatcher();
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    private:
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        CIntPropertyWatcher( MIntChangeNotifiable& aObserver );
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        void ConstructL( const TUid aCategory, TUint aKey );
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        void RunL();
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        void DoCancel();
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    private:
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        RProperty iProperty;
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        MIntChangeNotifiable& iObserver;
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    };
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#endif // INPROPERTYWATCHER_H