--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbengines/usbwatcher/inc/cusbactivestate.h	Fri Jun 04 10:27:39 2010 +0100
@@ -0,0 +1,141 @@
+/*
+* Copyright (c) 2002-2009 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 file for class CUsbActiveState
+*
+*/
+
+
+#ifndef CUSBACTIVESTATE_H
+#define CUSBACTIVESTATE_H
+
+// INCLUDE FILES
+#include <e32base.h>
+
+// FORWARD DECLARATION
+class CUsbWatcher;
+
+// CLASS DECLARATION
+
+/**
+*  Class to handle USB state changes.
+*
+*  @lib euser.lib usbman.lib
+*  @since Series 60 2.?
+*/
+NONSHARABLE_CLASS( CUsbActiveState ) : public CActive
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Two-phased constructor.
+        * @param aUsbMan Reference to usb manager.
+        * @param aParent Reference to UsbMediaWatcher.
+        * @return Pointer to created object.
+        */
+        static CUsbActiveState* NewL( RUsb& aUsbMan, CUsbWatcher& aOwner );
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CUsbActiveState();
+
+    public: // from base class CActive
+
+        /**
+        * From CActive.
+        * This method is called when device state has changed.
+        * New request is issued and device state is given to owner class.
+        *
+        * @since Series 60 2.?
+        */
+        void RunL();
+
+        /**
+        * From CActive
+        * If there is outstanding request pending when Cancel() is called then
+        * this method must cancel request.
+        *
+        * @since Series 60 2.?
+        */
+        void DoCancel();
+
+    public: // new methods
+
+        /**
+        * Get the current device state
+        * @return the current device state
+        *
+        * @since Series 60 3.2
+        */
+        TUsbDeviceState CurrentState();
+
+        /**
+        * Get previous device state
+        * @return previous device state
+        *
+        * @since Series 60 5.1
+        */
+        TUsbDeviceState PreviousState();
+
+    
+    private:
+
+        /**
+        * Constructor is prohibited.
+        * @param aUsbMan Reference to Usb manager.
+        * @param aParent Reference to CUsbMediaWatcher.
+        */
+        CUsbActiveState( RUsb& aUsbMan, CUsbWatcher& aOwner );
+
+        /**
+        * C++ default constructor (no implementation provided).
+        */
+        CUsbActiveState();
+
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        void ConstructL();
+        
+        // Prohibit copy constructor when not deriving from CBase.
+        CUsbActiveState( const CUsbActiveState& );
+        // Prohibit assigment operator when not deriving from CBase.
+        CUsbActiveState& operator=( const CUsbActiveState& );
+
+    private: // Data
+        /**
+         * Handle to Usb Manager
+         */
+        RUsb iUsbMan;
+        
+        /**
+         * Refernce to owner class
+         */
+        CUsbWatcher& iOwner;
+
+        /**
+         * Current device state
+         */
+        TUsbDeviceState iCurrentState;
+
+        /**
+         * Previous device state
+         */
+        TUsbDeviceState iPreviousState;        
+
+    };
+
+#endif   // CUSBACTIVESTATE_H
+
+// End of File