tstaskmonitor/server/inc/tsfswengine.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 11 Jun 2010 13:58:37 +0300
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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:  Task monitor engine
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 *
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*/
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#ifndef TSFSWENGINE_H
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#define TSFSWENGINE_H
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#include <e32base.h>
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#include "tsfswentry.h"
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#include "tsdataobserver.h"
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class CTsFswDataList;
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/**
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 * Engine for fast swap server.
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 * Performs task monitoring, notifications about wg changes are
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 * received from the appui.
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 */
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NONSHARABLE_CLASS( CTsFswEngine ) : public CBase,
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                                    public MHsDataObserver
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    {
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public:
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    /**
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     * Creates a new instance.
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     * @param   observer   ref to observer
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     */
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    static CTsFswEngine* NewL( MHsDataObserver& observer );
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    /**
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     * @copydoc NewL
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     */
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    static CTsFswEngine* NewLC( MHsDataObserver& observer );
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    /**
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     * Destructor.
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     */
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    ~CTsFswEngine();
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    /**
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     * Returns a reference to the current content.
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     * @return  ref to content array
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     */
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    const RTsFswArray& FswDataL();
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    /**
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     * Set screenshot 
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     */
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    void SetScreenshotL(const CFbsBitmap* bitmap, UpdatePriority priority, TInt wgId);
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    /**
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     * Removes screenshot 
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     */    
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    void RemoveScreenshotL(TInt wgId);
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private:
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    // from MTsFswTaskListObserver
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    void DataChanged();
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private:
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    /**
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     * Constructor.
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     */
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    CTsFswEngine( MHsDataObserver& observer );
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    /**
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     * Performs 2nd phase construction.
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     */
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    void ConstructL();
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    /**
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     * Gets the window group list and reconstructs the fsw content.
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     * @return   TBool   ETrue if the list has been modified
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     */
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    TBool CollectTasksL();
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private:
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    MHsDataObserver& mObserver;
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    CTsFswDataList* mDataList; //own
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    };
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#endif