servicewidget/servicewidgetdatapublisher/inc/cservicewidgettimer.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 10:12:18 +0200
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/*
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* Copyright (c) 2008 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:  Event listener implementation presence
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*
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*/
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#ifndef CSERVICEWIDGETTIMER_H
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#define CSERVICEWIDGETTIMER_H
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#include <e32base.h>
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// forward declaration
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class MServiceWidgetTimerObserver;
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// class declaration
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/**
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 * @class timer class
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 * @since 5.0
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 */
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class CServiceWidgetTimer : public CActive
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    {
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public :
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        // Constructor
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        /**
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         * Creates a new CServiceWidgetTimer.
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         * @param aObserver, reference to timer 
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         * @return New instance of this class         
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         */
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        static CServiceWidgetTimer* NewL(MServiceWidgetTimerObserver& aObserver );
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          /**
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           * Standard C++ destructor.
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           */
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         ~CServiceWidgetTimer();
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         /**
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         * start listening
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         * @param a time interval
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         */
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         void StartListening(TTimeIntervalMicroSeconds32 anInterval);
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         /**
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         * stop listening
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         */
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         void StopListening();     
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private : // From CActive
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        /**
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        *  RunL
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        */
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        void RunL();  
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        /**
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        *  DoCancel
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        */
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        void DoCancel();
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private: // Implementation
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       /**
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        * Standard C++ constructor
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        * @param aObserver, reference to timer
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       */
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        CServiceWidgetTimer(MServiceWidgetTimerObserver& aObserver );
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       /**
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        * Performs the 2nd phase of construction.
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        */
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       void ConstructL();
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private :
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       	// not owns : reference to contact update observer
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        MServiceWidgetTimerObserver& iObserver;
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		/**
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		 *  owns : timer to trigger message queue uptation checking
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		 */
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		RTimer iTimer;
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	    };
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#endif /*CSERVICEWIDGETTIMER_H*/
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//end of file