1 /*

     2 * Copyright (c) 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:

    15 *

    16 */

    17 

    18 #ifndef C_USBBUSACTIVITYOBSERVER_H

    19 #define C_USBBUSACTIVITYOBSERVER_H

    20 

    21 #include <e32base.h>

    22 

    23 #include "tassertbase.h"

    24 

    25 class MUsbBusActivityObserver

    26     {

    27 public:

    28 

    29     virtual void BusIdleL() = 0;

    30     virtual void BusActiveL() = 0;

    31     };

    32 

    33 /**

    34  *  Class observes OTG State property, see usbotgdefs.h

    35  *

    36  *  @lib ?library

    37  *  @since S60 ?S60_version *** for example, S60 v3.0

    38  */

    39 class CUsbBusActivityObserver : public TAssertBase

    40     {

    41     friend class CtUsbOtgWatcher;

    42     friend class CUsbOtgWatcherTest;

    43 

    44 public:

    45 

    46     enum TBusActivity

    47         {

    48         EBusIdle = 0,

    49         EBusActive = 1

    50         };

    51 

    52     /**

    53      * Two-phased constructor.

    54      * @param ?arg1 ?description

    55      * @param ?arg2 ?description

    56      */

    57     //    ?IMPORT_C 

    58     static CUsbBusActivityObserver* NewL();

    59 

    60     /**

    61      * Destructor.

    62      */

    63     virtual ~CUsbBusActivityObserver();

    64 

    65     /**

    66      * ?description

    67      *

    68      * @since S60 ?S60_version

    69      * @param ?arg1 ?description

    70      * @param ?arg2 ?description

    71      * @return ?description

    72      */

    73     //    ?IMPORT_C 

    74     TBusActivity BusActivity();

    75 

    76     /**

    77      * ?description

    78      *

    79      * @since S60 ?S60_version

    80      * @param ?arg1 ?description

    81      * @param ?arg2 ?description

    82      * @return ?description

    83      */

    84     void SubscribeL(MUsbBusActivityObserver&);

    85 

    86     void UnsubscribeL(MUsbBusActivityObserver&);

    87 

    88     void TriggerBusIdleL();

    89 

    90     void TriggerBusActiveL();

    91 

    92 private:

    93 

    94     CUsbBusActivityObserver();

    95 

    96     void ConstructL();

    97 

    98 private:

    99     // data

   100 

   101     // The observer reports state changes to own observers

   102     // Owns

   103     MUsbBusActivityObserver* iObserver;

   104 

   105     TInt iBusActivity;

   106     };

   107 

   108 #endif //  C_USBOTGSTATEOBSERVER_H