/** @file

* Copyright (c) 2005-2008 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:  Detects remove disk event.

*

*/

#ifndef C_CUPNPDISKREMOVEDETECTOR_H

#define C_CUPNPDISKREMOVEDETECTOR_H

// INCLUDE FILES

#include <e32base.h>

#include <f32file.h>

// FORWARD DECLARATIONS

class CUpnpMediaServer;

// CLASS DECLARATION

/**

 *  Class is responsible for detecting removal/unmounting of a disk from file system

 *  @since S60 v3.2

 */

class CUpnpDiskRemoveDetector : public CActive

    {

public: // New methods

    /**

    * Two-phased constructor.

    * @param aObserver callback interface

    */

    static CUpnpDiskRemoveDetector* NewLC( CUpnpMediaServer* aObserver );

    /**

    * Two-phased constructor.

    * @param aObserver callback interface

    */

    static CUpnpDiskRemoveDetector* NewL( CUpnpMediaServer* aObserver );

    /**

    * Destructor.

    */

    ~CUpnpDiskRemoveDetector();

    /**

     * Start watching for events - asynchronous method

     */	

    void StartL();

protected: // From CActive

    /**

     * From CActive, called when event occur.

     */

    void RunL();

    /**

     * From CActive, cancel watching for incoming events.

     */

    void DoCancel();

    /**

     * From CActive, called when RunL leaves.

     * @param aError error code

     */

    TInt RunError( TInt aError );

private: // New methods

    /**

    * C++ default constructor.

    * @param aObserver callback interface

    */

    CUpnpDiskRemoveDetector( CUpnpMediaServer* aObserver );

    /**

     * Second phase constructor

     */

    void ConstructL();

    /**

     * Check if the upload direcotory is valid

     */

    void CheckUploadDirectoryL();

    /**

     * Subscribe this object for file system disk event

     */

    void SubscribeForDiskEvent();

private: // Data

    // Interface monitor

    RFs iFs;

    //Callback interface

    CUpnpMediaServer* iObserver;

    };

#endif // C_CUPNPDISKREMOVEDETECTOR_H