1 /*

     2 * Copyright (c) 2007-2009 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 of CUsbGlobalSystemStateObserver

    15 *

    16 */

    17 

    18 

    19 #ifndef CUSBGLOBALSYSTEMSTATEOBSERVER_H

    20 #define CUSBGLOBALSYSTEMSTATEOBSERVER_H

    21 

    22 #include <e32std.h>

    23 #include <e32base.h>

    24 #include <e32property.h>

    25 

    26 class CUsbWatcher;

    27 

    28 NONSHARABLE_CLASS( CUsbGlobalSystemStateObserver ) : public CActive

    29 {

    30 public:

    31     static CUsbGlobalSystemStateObserver* NewL( CUsbWatcher& aUsbWatcher );

    32     static CUsbGlobalSystemStateObserver* NewLC( CUsbWatcher& aUsbWatcher );

    33     void Subscribe();

    34     virtual ~CUsbGlobalSystemStateObserver();

    35 

    36     /**

    37      * Read and return global system state

    38      * 

    39      * @since Series 60 3.2

    40      * @return systemstate

    41      */

    42     static TInt GlobalSystemState();

    43 

    44 private: // From base class

    45     void RunL();

    46     TInt RunError( TInt aError );

    47     void DoCancel();

    48         

    49 private:

    50     CUsbGlobalSystemStateObserver( CUsbWatcher& aUsbWatcher );

    51     void ConstructL();

    52 

    53 private: // data

    54     RProperty iProperty;

    55     CUsbWatcher& iUsbWatcher;

    56 };

    57 

    58 #endif // CUSBGLOBALSYSTEMSTATEOBSERVER_H

    59 

    60 // End of file