vtuis/videotelui/inc/features/cvtuifeaturebase.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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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:  CVtUiFeatureBase implementation.
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*
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*/
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#ifndef C_VTUIFEATUREBASE_H
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#define C_VTUIFEATUREBASE_H
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//  INCLUDES
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#include <e32base.h>
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#include "mvtuifeature.h"
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// CLASS DECLARATION
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class CVtUiAppUi;
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class CVtUiFeatureManager;
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/**
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*   Base class for Video Telephone application features.
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*
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*  @since S60 3.2
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*/
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class CVtUiFeatureBase : public CBase, public MVtUiFeature
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    {
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    public: // public methods
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        /**
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        * C++ destructor.
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        */
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        ~CVtUiFeatureBase();
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    public: // from MVtUiFeature
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        /** @see MVtUiFeature */
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        virtual void StartL();
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        /** @see MVtUiFeature */
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        virtual void Stop() = 0;
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        /** @see MVtUiFeature */
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        virtual void InitFeatureL() = 0;
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        /** @see MVtUiFeature */
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        TVtUiFeatureState State() const;
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        /** @see MVtUiFeature */
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        TVtUiFeatureId Id() const;
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    protected:
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        /**
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        * C++ constructor
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        *
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        */
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        CVtUiFeatureBase( TVtUiFeatureId aId,
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            CVtUiFeatureManager& aFeatureManager );
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        /**
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        * BaseConstructL
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        * For child class to use.
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        * Calls constructL. 
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        */
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        void BaseConstructL();
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        /**
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        * Callback function that inits the features.
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        * @param aAny pointer to an instance of the class.
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        * @return always KErrNone.
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        */
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        static TInt DoInitFeaturesL( TAny* aAny );
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    protected: // data
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        // Feature's unique Id
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        const TVtUiFeatureId iId;
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        // Reference to featuremanager
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        CVtUiFeatureManager& iFeatureManager;
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        // Features current state
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        MVtUiFeature::TVtUiFeatureState iFeatureState;
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        // Owned asynch callback.
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        CAsyncCallBack* iAsyncCallback;
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    };
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#endif // C_VTUIFEATUREBASE_H