1 /*

     2 * Copyright (c) 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 TUsbIndicatorHandler

    15 *

    16 */

    17 

    18 

    19 #ifndef TUSBINDICATORHANDLER_H

    20 #define TUSBINDICATORHANDLER_H

    21 

    22 #include <bldvariant.hrh>

    23 #include <usbstates.h>

    24 

    25 

    26 /**

    27 *  USB indicator handler class for device side.

    28 *

    29 *  This class shows USB indicator when device state changes to Configured, 

    30 *  and hides USB indicator when device leaves Configured state. Suspended 

    31  * state does not change the indicator.

    32 *

    33 *  @since TB9.2

    34 */

    35 NONSHARABLE_CLASS( TUsbIndicatorHandler )

    36     {

    37 

    38 public:

    39     /**

    40      * Constructor

    41      */

    42     TUsbIndicatorHandler();

    43     

    44 	/**

    45      * Set USB indicator (On/Off, maybe more in future) according to 

    46      * the change of USB device state

    47      *

    48      * @param aStateOld previous USB device state

    49      * @param aStateNew current USB device state

    50      */

    51     void HandleDeviceStateChange( TUsbDeviceState aStateOld, 

    52             TUsbDeviceState aStateNew );

    53             

    54 private:

    55 	/**

    56      * Show USB indicator (On/Off, maybe more in future)

    57      *

    58      * @since TB9.2

    59      * @param aUsbIndicatorState the state of the indicator, 0: OFF, 1: ON

    60      */

    61     void ShowUsbIndicator( TInt aUsbIndicatorState );

    62 	

    63 private:

    64     /**

    65      * The device state before suspend.

    66      * Used to filter out suspend from others;

    67      */

    68     TUsbDeviceState iDevStateB4Suspend;

    69     

    70     /////////////////////////////////////////////////////////////////////////

    71     // Test code

    72     friend class CtTUsbIndicatorHandler;

    73     TBool iUsbIndicator; 

    74     // 

    75     /////////////////////////////////////////////////////////////////////////

    76      

    77     };

    78     

    79 

    80 #endif   // TUSBINDICATORHANDLER_H

    81 

    82 // End of File