/*

* 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:  MPX Low Disk Space Watcher class

*

*/

#ifndef CMPXDISKWATCHER_H

#define CMPXDISKWATCHER_H

#include <f32file.h>

class MMPXDiskSpaceObserver;

/**

 *  Low disk space watcher for monitoring disk space

 *

 *  @lib mpxfilehandler.lib

 *  @since S60 3.0

 */

NONSHARABLE_CLASS( CMPXDiskSpaceWatcher ) : public CActive

    {

public:

    /**

    * Two-phase constructor

    * @param aFs File system session

    * @param aDrive aDrive to monitor

    * @param aObs Observer to the monitor class

    */

    static CMPXDiskSpaceWatcher* NewL( RFs& aFs, TInt aDrive,

                                       MMPXDiskSpaceObserver& aObs );

    /**

    * destructor

    */

    virtual ~CMPXDiskSpaceWatcher();

    /**

    * Start monitoring for low disk events

    */

    void StartL();

    /**

    * Check if we are low on disk space

    * @return ETrue if low on disk

    */

    TBool IsLowOnDisk();

    /**

     * Gets the currently monitored drive number

     *

     * @return Currectly monitored drive number

     */

     TInt CurrentDrive();

protected:

    /**

    * Handle cancelling of active object request

    */

    void DoCancel();

    /**

    * Handle a change in event

    */

    void RunL();

private:

    /**

    * Default Constructor

    */

    CMPXDiskSpaceWatcher( RFs& aFs, TInt aDrive,

                          MMPXDiskSpaceObserver& aObs );

    /**

    * Standard two-phase constructor

    */

    void ConstructL();

private: // data

    RFs& iFs;             // Not owned

    TInt iDriveToMonitor; // Drive to monitor

    MMPXDiskSpaceObserver& iObs;

    };

#endif //CMPXDISKWATCHER_H