--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbengines/usbdevcon/inc/cusbstatewatcher.h	Thu Dec 17 09:14:30 2009 +0200
@@ -0,0 +1,123 @@
+/*
+* Copyright (c) 2007 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:  Watches USB states
+*
+*/
+
+
+#ifndef CUSBSTATEWATCHER_H
+#define CUSBSTATEWATCHER_H
+
+#include <e32std.h>
+#include <d32usbc.h>
+
+#include "cusbdevcon.h"
+
+/**
+ *  Usb State watcher
+ *  Reports Usb state changes to CUsbDevCon
+ *
+ *  @lib usbdevcon.lib
+ *  @since S60 v.5.0 
+ */
+ 
+class CUsbStateWatcher : public CActive
+    {
+
+public:
+
+    /**
+     * Two-phased constructor.
+     *
+     * @since S60 v.5.0
+     * @param aObserver Gets notifications when USB state changed
+     * @param aLdd Link to LDD services
+     * @return Constructed instance
+     */ 
+    static CUsbStateWatcher* NewL(CUsbDevCon& aObserver, RDevUsbcClient& aLdd);
+    
+    /**
+    * Destructor.
+    *
+    * @since S60 v.5.0
+    */
+    virtual ~CUsbStateWatcher();
+    
+    /**
+     * Activates USB states watching
+     *
+     * @since S60 v.5.0
+     */
+    void Activate();
+        
+private:
+    
+    /**
+     * Default construction
+     *
+     * @since S60 v.5.0
+     * @param aObserver Gets notifications when USB state changed
+     * @param aLdd Link to LDD services
+     */
+    CUsbStateWatcher(CUsbDevCon& aObserver, RDevUsbcClient& aLdd);
+    
+    /**
+     * Two-phased constructor.
+     *
+     * @since S60 v.5.0
+     */
+    void ConstructL();
+    
+    // from CActive
+    
+    /**
+     * From CActive.
+     *
+     */
+    void RunL();
+    
+    /**
+     * From CActive.
+     *
+     */ 
+    void DoCancel();
+    
+     /**
+     * From CActive.
+     *
+     */ 
+     TInt RunError( TInt /*aError*/ );
+
+private: // data
+    
+    /**
+     * Device state
+     */
+    TUint iState;
+        
+    /**
+     * Observer
+     * Not own.  
+     */
+    CUsbDevCon& iObserver;
+    
+    /**
+     * LDD
+     * Not own.  
+     */
+    RDevUsbcClient& iLdd;
+    
+    };
+
+#endif // CUSBSTATEWATCHER_H