1 /*

     2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Header file for class CUsbDeviceLock.

    15 *

    16 */

    17 

    18 

    19 #ifndef CUSBDEVICELOCK_H

    20 #define CUSBDEVICELOCK_H

    21 

    22 class CUsbWatcher;

    23 

    24 /**

    25  *  Class for device lock notification

    26  *

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

    28  *  @since Series 60 2.?

    29  */

    30 NONSHARABLE_CLASS( CUsbDeviceLock ) : public CActive

    31     {

    32 

    33 public:

    34 

    35     static CUsbDeviceLock* NewL( CUsbWatcher& aOwner );

    36 

    37     virtual ~CUsbDeviceLock();

    38 

    39 public:

    40     /**

    41      * Subscribes device lock change event.

    42      *

    43      * @since Series 60 3.0

    44      */    

    45     void Subscribe();

    46     

    47     /**

    48      * Current state of device lock.

    49      *

    50      * @since Series 60 3.0

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

    52      */

    53     TBool Locked();

    54     

    55 public: // from base class CActive

    56     

    57     /**

    58      * From CActive.

    59      * This method is never called in this implementation.

    60      *

    61      * @since Series 60 3.0

    62      */

    63     TInt RunError( TInt /*aError*/ );

    64 

    65     /**

    66      * From CActive.

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

    68      * New state is given to owner class.

    69      *

    70      * @since Series 60 3.0

    71      */

    72     void RunL();

    73 

    74     /**

    75      * From CActive.

    76      * Will cancel outstanding request if called.

    77      *

    78      * @since Series 60 3.0

    79      */

    80     void DoCancel();

    81       

    82 private:

    83 

    84     /**

    85      * C++ constructor.

    86      */

    87     CUsbDeviceLock( CUsbWatcher& aOwner );

    88 

    89     CUsbDeviceLock();

    90 

    91     void ConstructL();

    92       

    93 

    94 private:

    95     /**

    96      * Handle to P&S key

    97      */

    98     RProperty  iProperty;

    99     

   100     /**

   101      * Owner of this class

   102      */

   103     CUsbWatcher& iOwner;

   104 };

   105 

   106 #endif // CUSBDEVICELOCK_H

   107 

   108 // End of file

   109