/*

* Copyright (c) 2010 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:  Mmc monitor

*

*/

#ifndef MMCMONITORUTIL_H

#define MMCMONITORUTIL_H

//  INCLUDES 

#include <e32base.h>

#include <e32property.h>

#include <driveinfo.h>

#include <common.h>

#include <f32file.h>

#include "mmceventobserver.h"

/**

 * Mmc monitoring

 * Implements CActive

 */

class CMMCMonitorUtil : public CActive

    {

public:

    /**

     * NewL

     * @param MMMCEventObserver* aObserver event observer

     * @return CMMCMonitorUtil Monitor item

     */

    static CMMCMonitorUtil* NewL( MMMCEventObserver* aObserver);

    /**

     * Destructor

     */

    virtual ~CMMCMonitorUtil();

    /**

     * StartMonitoring

     * Start monitoring mmc

     * This function calls CMMCMonitorUtil::RunL() to initiate the MMC status 

     * checking.

     * @return TBool success status

     */

    TBool StartMonitoring();

protected: // CActive

    /**

     * From CActive.

     */

    void DoCancel();

    /**

     * From CActive.

     * 

     */

    void RunL();

    /**

     * From CActive.

     * @param aError Leave code from RunL()

     * @return hard-coded KErrNone

     */

    TInt RunError( TInt aError );

private:

    /**

     * MmcStatus

     * Utility function that checks the DriveInfo properties of drive

     * aDriveNumber to decide if aDriveNumber is an MMC drive or not.

     * @param aDriveNumber, the drive of the Mmc.

     * @return ETrue indicates that aDriveNumber is a MMC drive.

     */

    TBool MmcStatus( TInt aDriveNumber );

    /**

     * Constructor

     * @param MMMCEventObserver* aObserver event observer

     */

    CMMCMonitorUtil( MMMCEventObserver* aObserver );

    /**

     * 2nd phase construction

     * @param RFs* aFsSession File server session

     */

    void ConstructL();

private: // data members

    // File system handle

    RFs iFsSession;

    // inserted/ejected status of mmc

    TBool iMmcStatus;

    // MMC Inserted/ejected property

    RProperty iProperty;

    //Notify MMC event back to observer

    MMMCEventObserver* iObserver;

    };

#endif // MMCMONITORUTIL_H