/*

* Copyright (c) 2002 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:  

*     Copies/Moves message store from source drive to target drive

*

*/

#if !defined(__MCESETTINGSMOVEMSGS_H__)

#define __MCESETTINGSMOVEMSGS_H__

//  INCLUDES

#include <e32base.h>

#include <msvstd.h>

// CONSTANTS

const TInt KMsgTransHndlrPriority=0;

const TInt KMsgTransTimerPriority=0;

const TInt KCopyBufSize=0x1000;

// FORWARD DECLARATIONS

class CMceMessageTransHandler;

class CMsvSession;

class CMsvOperation;

// CLASS DECLARATION

class MMceMsgTransHandlerObserver

    {

public:

    virtual void CopyCompleteL(TInt aErr) = 0;

    /**

    * Called when message store transfer is complete

    */

    virtual void TransferCompleteL(TInt aErr)=0;

    /**

    * Called when message store transfer cannot be cancelled

    */

    virtual void DisableCancelL()=0;

    };

//

// CMceMessageTransHandler - active object used to transfer the message store

//

class CEkmsDocument;

class CMceMessageTransHandler : public CActive

    {

    public:

        ~CMceMessageTransHandler();

        static CMceMessageTransHandler* NewL( MMceMsgTransHandlerObserver& aOwner, 

                                                                        CMsvSession* aSession, 

                                                                        TInt aTargetDrive, 

                                                                        TInt aSourceDrive, 

                                                                        TBool aDeleteCopiedStore );

        /**

        * Sets operation

        * Must only be called once during the lifetime of a CMsvSingleOpWatcher

        * object.

        */

		void SetOperation( CMsvOperation* aOperation );

        /**

        * Returns reference to the operation

        */

        IMPORT_C CMsvOperation& Operation() const;

        /**

        * Display progress in main thread

        */

        TInt ProgressL() const;

        /**

        * Called by the framework if RunL() leaves

        */

        TInt RunError( TInt );

    protected:

        /**

        * Cancels transfer thread

        */

        virtual void DoCancel();

        /**

        * Calls TransferCompleteL and sets message drive on the message server

        */

        virtual void RunL();

    private:

        /**

        * C++ constructor

        */

		CMceMessageTransHandler( MMceMsgTransHandlerObserver& aOwner, 

		                                            CMsvSession* aSession,

		                                            TInt aTargetDrive, 

		                                            TInt aSourceDrive, 

		                                            TBool aDeleteCopiedStore );

        /**

        * Create transfer thread and delete thread

        */

        void ConstructL();        

        TInt ProgressErrorL() const;

        enum TTransHandlerState

                {

                EStateCopying,

                EStateDeleting,

                };

    private:

        MMceMsgTransHandlerObserver& iOwner;

        CMsvSession*            iSession; // not owed by this class.

        CMsvOperation*			iOperation;

		TDriveUnit				iTargetDrive; // The target drive for the copied message store

		TDriveUnit              iSourceDrive; // The source drive of the message store

		TBool                   iDeleteCopiedStore; // True if the contents of the original store is to be deleted

        TTransHandlerState      iState;

    };

#endif // __MCESETTINGSMOVEMSGS_H__

// End of file