/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0""

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Wraps wait note and real work thread

*

*/

#ifndef CFILEMANAGERACTIVEBASE_H

#define CFILEMANAGERACTIVEBASE_H

// INCLUDES

#include <e32std.h>

#include <AknWaitNoteWrapper.h>

#include "MFileManagerThreadFunction.h"

// FORWARD DECLARATIONS

class CFileManagerThreadWrapper;

// CLASS DECLARATION

/**

* Class wraps wait note and real work thread to avoid long running steps 

* in the main thread that freezes the UI.

*

*  @lib FileManagerEngine.lib

*  @since 3.2

*/

NONSHARABLE_CLASS(CFileManagerActiveBase) : public CBase,

                              public MAknBackgroundProcess,

                              public MFileManagerThreadFunction

    {

    public:

        /**

        * Constructor for subclasses.

        */

        void BaseConstructL();

        /**

        * Destructor.

        */

        ~CFileManagerActiveBase();

        TInt Result() const;

    private: // From MAknBackgroundProcess

        void StepL();

        TBool IsProcessDone() const;

        void DialogDismissedL( TInt aButtonId );

    private: // From MFileManagerThreadFunction

        void ThreadStepL();

        TBool IsThreadDone();

        void NotifyThreadClientL( TNotifyType aType, TInt aValue );

    protected:

        /**

        * For subclasses to handle all processing in work thread

        */

        virtual void ThreadFunctionL( const TBool& aCanceled ) = 0;

        /**

        * For subclasses to request cancel in work thread

        */

        virtual void CancelThreadFunction();

    protected:

        /**

        * C++ default constructor.

        */

        CFileManagerActiveBase();

    private: // Data

        // Wraps work thread control. Own.

        CFileManagerThreadWrapper* iThreadWrapper;

        // Indicates if background process is done or not

        TBool iDone;

        // Indicates if thread is canceled

        TBool iCanceled;

        // Indicates the result

        TInt iResult;

    };

#endif      // CFILEMANAGERACTIVEBASE_H

// End of File