filemanager/bkupengine/inc/CMMCScBkupState.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 18 Jan 2010 20:09:41 +0200
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/*
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* Copyright (c) 2002 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: Declaration for CMMCScBkupState
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*     
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*
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*/
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#ifndef __CMMCSCBKUPSTATE_H__
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#define __CMMCSCBKUPSTATE_H__
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// System includes
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#include <e32base.h>
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// User includes
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#include "MMMCScBkupDriver.h"
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#include "MMCScBkupStateIds.h"
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#include "RMMCScBkupPointerArray.h"
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#include "MMMCScBkupArchiveDataInterface.h"
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// Namespaces
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using namespace conn;
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// Classes referenced
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class CMMCScBkupState;
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/**
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*
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*
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* @since 3.0
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*/
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NONSHARABLE_CLASS(CMMCScBkupState) : public CActive
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    {
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    public:
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        /**
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        * Enumeration specifying how state is supposed to be handled
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        */
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        enum TStateExecution
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            {
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            EStateOnce = 0,
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            EStatePerCategory,
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            EStatePerCategoryCommon
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            };
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        /**
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        * Destructor
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        */
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        ~CMMCScBkupState();
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    protected:
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        /**
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        * C++ default constructor
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        */
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        CMMCScBkupState( MMMCScBkupDriver& aDriver, TInt aPriority = CActive::EPriorityIdle );
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    public:
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        /**
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        * Return the unique RTTI id of this state
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        */
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        virtual TMMCScBkupStateId StateId() const = 0;
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        /**
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        * Return the next state that should be executed
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        * after this state has finished. This allows
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        * for dynamic changes in the state machine
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        */
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        virtual TMMCScBkupStateId NextStateId() const = 0;
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        /**
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        * Return false if no need for category specific actions, otherwise true
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        */
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        virtual TStateExecution CategorySpecific() const { return EStateOnce; }
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        /**
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        * Perform the action associated with this
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        * state
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        */
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        void ExecuteL(TRequestStatus& aObserver);
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    protected: // Virtual framework
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        /**
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        * Perform the initial action associated with this
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        * state
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        */
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        virtual void PerformStateInitL() = 0;
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        /**
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        * Perform some asynchronous operation
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        */
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        virtual void PerformAsynchronousStateStepL();
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        /**
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        * Perform some asynchronous cancellation
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        */
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        virtual void PerformAsynchronousCancellation();
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        /**
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        * Called just before observer's request is completed
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        * in the case of an error-free operation. Not called
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        * when errors occur during state processing.
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        */
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        virtual void PerformLastRightsL();
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        /**
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        * Called from RunError
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        */
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        virtual TBool PerformAsynchronousErrorCleanup(TInt aError);
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    private: // Virtual framework
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        /**
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        * Default behaviour is to panic if called
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        */
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        void RunL();
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        /**
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        * 
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        */
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        void DoCancel();
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        /**
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        * Default behaviour is to return KErrNone
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        */
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        TInt RunError(TInt aError);
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    protected: // Internal API
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        /**
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        *
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        */
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        inline MMMCScBkupDriver& Driver() const { return iDriver; }
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        /**
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        *
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        */
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        inline MMMCScBkupArchiveDataInterface& ADI() const { return iDriver.DrvADI(); }
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        /**
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        *
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        */
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        void CompleteSelf(TInt aCompletionCode = KErrNone);
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        /**
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        *
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        */
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        void SetObserver(TRequestStatus& aStatus);
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    private: // Internal API
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        /**
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        *
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        */
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        void CompleteObserver(TInt aCompletionCode);
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    private: // Member data
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        // Driver
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        MMMCScBkupDriver& iDriver;
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        // Observer
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        TRequestStatus* iObserver;
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    };
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#endif // __CMMCSCBKUPSTATE_H__
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//End of File