/*

* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

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

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Header of CUsbGlobalSystemStateObserver

*

*/

#ifndef CUSBGLOBALSYSTEMSTATEOBSERVER_H

#define CUSBGLOBALSYSTEMSTATEOBSERVER_H

#include <e32std.h>

#include <e32base.h>

#include <e32property.h>

class CUsbWatcher;

NONSHARABLE_CLASS( CUsbGlobalSystemStateObserver ) : public CActive

{

public:

    static CUsbGlobalSystemStateObserver* NewL( CUsbWatcher& aUsbWatcher );

    static CUsbGlobalSystemStateObserver* NewLC( CUsbWatcher& aUsbWatcher );

    void Subscribe();

    virtual ~CUsbGlobalSystemStateObserver();

    /**

     * Read and return global system state

     * 

     * @since Series 60 3.2

     * @return systemstate

     */

    static TInt GlobalSystemState();

private: // From base class

    void RunL();

    TInt RunError( TInt aError );

    void DoCancel();

private:

    CUsbGlobalSystemStateObserver( CUsbWatcher& aUsbWatcher );

    void ConstructL();

private: // data

    RProperty iProperty;

    CUsbWatcher& iUsbWatcher;

};

#endif // CUSBGLOBALSYSTEMSTATEOBSERVER_H

// End of file