/*

* Copyright (c) 2006 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: 

*     Class for observing free disk space and if disk space goes under critical

*     level this cancels itself.

*

*

*/

#ifndef __IMUMDISKSPACEOBSERVEROPERATION_H__

#define __IMUMDISKSPACEOBSERVEROPERATION_H__

//  INCLUDES

#include <e32base.h>                // Basic Symbian Include

#include <f32file.h>                // RFs

#include "ImumOnlineOperation.h"

#include "ImumDiskSpaceObserver.h"  // CImumDiskSpaceObserver

// CONSTANTS

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

* CImumDiskSpaceObserverOperation

* Class for observing free disk space and if disk space goes under critical

* level this cancels itself.

* note: Derived class MUST call BaseConstructL in its ConstuctL

*/

class CImumDiskSpaceObserverOperation :

    public CImumOnlineOperation,

    public MImumDiskSpaceObserver

    {

    public:

        /**

        * Destructor

        */

        virtual ~CImumDiskSpaceObserverOperation();

    protected: // From base classes

    protected: // Constructors

        /**

        * C++ default constructor.

        * Parameters like in CImumOnlineOperation

        */

        CImumDiskSpaceObserverOperation(

            CImumInternalApi& aMailboxApi,

            TInt aPriority,

            TRequestStatus& aObserverRequestStatus,

            MMsvProgressReporter& aReporter);

        /**

        * Opens connection to shared data and calls CImumOnlineOperation::BaseConstructL

        * note: Derived class MUST call BaseConstructL in its ConstuctL

        * @param aMtmType: mtm uid of the current operation

        */

        void BaseConstructL( TUid aMtmType );

    private: // From Baseclasses

        /**

        * Function to execute the disk space check from current drive

        * @since S60 3.0

        * @KErrNone, when everything is ok

        * @KErrDiskFull, when no disk space for operation

        */

        TInt DoDiskSpaceCheckL();

        /**

        *

        * @since S60 3.0

        */

        void HandleDiskSpaceEvent();

        /**

        *

        * @since S60 3.0

        */

        void DoCancel();

    private: // New Functions

    private: // Data

        // Disk Space Oserver

        CImumDiskSpaceObserver* iDiskObserver;

        // Create own instance of API because ImumDiskSpaceObserver outlives

        // the owner of iMailboxApi reference in ImumOnlineOperation

        CImumInternalApi* iEmailApi;

    };

#endif      // __IMUMDISKSPACEOBSERVEROPERATION_H__

// End of File