/*

* 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:  Monitors for media removal events

*

*/

#ifndef CVRMEDIAREMOVALMONITER_H

#define CVRMEDIAREMOVALMONITER_H

#include <e32base.h>

#include "MVRMediaRemovalObserver.h"

/**

 *  Class to monitors for File System dismount events

 *  @lib Harvester

 *  @since S60 3.0

 */

class CVRMediaRemovalMonitor : public CActive

    {

public:

    /**

    * Two-phase constructor

    * @param aDrive drive to monitor

    * @param aFs file server session

    * @param aObserver observer to the event

    */

    static CVRMediaRemovalMonitor* NewL(  TInt aDrive, 

                                          RFs& aFs,

                                          MVRMediaRemovalObserver* aObserver );

    /**

    * Two-phase constructor

    * @param aDrive drive to monitor

    * @param aFs file server session

    * @param aObserver observer to the event

    */

    static CVRMediaRemovalMonitor* NewLC(  TInt aDrive, 

                                           RFs& aFs,

                                           MVRMediaRemovalObserver* aObserver );

    /**

    * Virtual destructor

    */

    virtual ~CVRMediaRemovalMonitor();

protected: // From base class 

    /*

    * From CActive

    */

    void RunL();

    /*

    * From CActive

    */

    void DoCancel();

    /**

    *  From CActive

    */

    TInt RunError(TInt aError);    

private:

    /**

    *  C++ constructor

    * @param aDrive drive to monitor

    * @param aFs file server session

    * @param aObserver observer to the event

    */

    CVRMediaRemovalMonitor(  TInt aDrive,

                             RFs& aFs,  

                             MVRMediaRemovalObserver* aObserver );

    void ConstructL();

private: // data

    TInt iDrive;        // Drive that is being monitored

    RFs& iFs;           // File Session, not owned

    TBool iDiskRemoved; // Is the disk inserted

    /*

    * Observer interface to callback to an observer

    */

    MVRMediaRemovalObserver* iObserver;

    };

#endif // CVRMEDIAREMOVALMONITER_H