1 /*

     2 * Copyright (c) 2009-2010 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 CUsbIndicatorHandler

    15 *

    16 */

    17 

    18 

    19 #ifndef CUSBINDICATORHANDLER_H

    20 #define CUSBINDICATORHANDLER_H

    21 

    22 #include <bldvariant.hrh>

    23 #include <usbstates.h>

    24 #include <e32std.h>

    25 #include <e32base.h>

    26 

    27 class CHbIndicatorSymbian;

    28 class CHbSymbianVariant;

    29 

    30 /**

    31 *  USB indicator handler class for device side.

    32 *

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

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

    35  * state does not change the indicator.

    36 *

    37 *  @since TB9.2

    38 */

    39 NONSHARABLE_CLASS( CUsbIndicatorHandler ) : public CBase

    40     {

    41     friend class CtTUsbIndicatorHandler;

    42 

    43 public:

    44     // Constructors and destructor

    45 

    46     /**

    47      * Destructor.

    48      */

    49     ~CUsbIndicatorHandler();

    50 

    51     /**

    52      * Two-phased constructor.

    53      */

    54     static CUsbIndicatorHandler* NewL();

    55 

    56     /**

    57      * Two-phased constructor.

    58      */

    59     static CUsbIndicatorHandler* NewLC();

    60 

    61 private:

    62 

    63     /**

    64      * Constructor for performing 1st stage construction

    65      */

    66     CUsbIndicatorHandler();

    67 

    68     /**

    69      * EPOC default constructor for performing 2nd stage construction

    70      */

    71     void ConstructL();

    72 

    73 

    74 public:

    75         

    76 	/**

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

    78      * the change of USB device state

    79      *

    80      * @param aStateOld previous USB device state

    81      * @param aStateNew current USB device state

    82      */

    83     void HandleDeviceStateChangeL( TUsbDeviceState aStateOld, 

    84             TUsbDeviceState aStateNew, TInt aPersonality );

    85             

    86 private:

    87 	/**

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

    89      *

    90      * @since TB9.2

    91      * @param aActivate activate or deactivate the indicator

    92      * @param aPersonality the personality id

    93      */

    94     void ShowUsbConnectedIndicatorL( TBool aActivate, TInt aPersonality );

    95 

    96 	/**

    97      * Show USB addressed state indicator (On/Off, maybe more in future)

    98      *

    99      * @since TB9.2

   100      * @param aActivate activate or deactivate the indicator

   101      */    

   102     void ShowUsbAddressedIndicator( TBool aActivate );

   103 	

   104 private:

   105     /**

   106      * The device state before suspend.

   107      * Used to filter out suspend from others;

   108      */

   109     TUsbDeviceState iDevStateB4Suspend;

   110     

   111     CHbIndicatorSymbian* iSymbianIndicator;

   112     

   113     CHbSymbianVariant* iIndicatorParameters;

   114     

   115     // remember whether indicators are active or not

   116     // simplifies little bit the state handling in HandleDeviceStateChange 

   117     TBool iAddressedIndicatorActive;

   118     TBool iConnectedIndicatorActive;

   119   

   120     };

   121     

   122 

   123 #endif   // CUSBINDICATORHANDLER_H

   124 

   125 // End of File