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camerauis/cameraapp/generic/inc/CamObservable.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 13 Oct 2010 14:09:54 +0300
branchRCL_3
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/*
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* Copyright (c) 2007 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:  Abstract interface for observable classes
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*
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*  Copyright © 2007 Nokia.  All rights reserved.
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*  This material, including documentation and any related computer
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*  programs, is protected by copyright controlled by Nokia.  All
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*  rights are reserved.  Copying, including reproducing, storing,
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*  adapting or translating, any or all of this material requires the
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*  prior written consent of Nokia.  This material also contains
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*  confidential information which may not be disclosed to others
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*  without the prior written consent of Nokia.
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*













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*








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*/













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// INCLUDE FILES













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#include "Cam.hrh"













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#ifndef MCAMOBSERVABLE_H













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#define MCAMOBSERVABLE_H













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class MCamObserver;













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class MCamObservable













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    {













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public:













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    /**













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    * Registers an observer if not previously registered













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    * @param aObserver The observer concerned













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    * @since 3.0













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    */













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    virtual void RegisterObserverL( MCamObserver* aObserver ) = 0;













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    /**













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    * Deregisters an observer if previously registered













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    * @param aObserver The observer concerned













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    * @since 3.0













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    */













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    virtual void DeregisterObserver( MCamObserver* aObserver ) = 0;













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    /**













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    * Broadcasts an event code to all registered observers













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    * @param aEvent The event code













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    */    













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    virtual void BroadcastEvent( TCamObserverEvent aEvent ) = 0;            













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    };













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#endif // MCAMOBSERVABLE_H















FCL/sf/app/camera