/*

* Copyright (c) 2006-2009 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:  Header file for class CUsbDeviceLock.

*

*/

#ifndef CUSBDEVICELOCK_H

#define CUSBDEVICELOCK_H

class CUsbWatcher;

/**

 *  Class for device lock notification

 *

 *  @lib euser.lib usbman.lib SysUtil.lib

 *  @since Series 60 2.?

 */

NONSHARABLE_CLASS( CUsbDeviceLock ) : public CActive

    {

public:

    static CUsbDeviceLock* NewL( CUsbWatcher& aOwner );

    virtual ~CUsbDeviceLock();

public:

    /**

     * Subscribes device lock change event.

     *

     * @since Series 60 3.0

     */    

    void Subscribe();

    /**

     * Current state of device lock.

     *

     * @since Series 60 3.0

     * @return When set (ETrue) device is locked. When unset (EFalse) device is unlocked.

     */

    TBool Locked();

public: // from base class CActive

    /**

     * From CActive.

     * This method is never called in this implementation.

     *

     * @since Series 60 3.0

     */

    TInt RunError( TInt /*aError*/ );

    /**

     * From CActive.

     * This method is called when device lock state has changed. 

     * New state is given to owner class.

     *

     * @since Series 60 3.0

     */

    void RunL();

    /**

     * From CActive.

     * Will cancel outstanding request if called.

     *

     * @since Series 60 3.0

     */

    void DoCancel();

private:

    /**

     * C++ constructor.

     */

    CUsbDeviceLock( CUsbWatcher& aOwner );

    CUsbDeviceLock();

    void ConstructL();

private:

    /**

     * Handle to P&S key

     */

    RProperty  iProperty;

    /**

     * Owner of this class

     */

    CUsbWatcher& iOwner;

};

#endif // CUSBDEVICELOCK_H

// End of file