--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbengines/usbdevcon/src/cusbstatewatcher.cpp	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
+*
+*/
+
+
+#include "cusbstatewatcher.h"
+#include "debug.h"
+
+// ---------------------------------------------------------------------------
+// Two-phase construction 
+// ---------------------------------------------------------------------------
+//
+CUsbStateWatcher* CUsbStateWatcher::NewL(CUsbDevCon& aObserver, RDevUsbcClient& aLdd)
+    {
+    
+    FLOG( _L( "[USBDEVCON]\tCUsbStateWatcher::NewL" ) );
+
+    CUsbStateWatcher* self = new (ELeave) CUsbStateWatcher(aObserver, aLdd);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+    return self;    
+    }
+
+// ---------------------------------------------------------------------------
+// Default construction 
+// ---------------------------------------------------------------------------
+//
+CUsbStateWatcher::CUsbStateWatcher(CUsbDevCon& aObserver, RDevUsbcClient& aLdd) :
+                                                            CActive(EPriorityMore),
+                                                            iState(EUsbcNoState),
+                                                            iObserver(aObserver),
+                                                            iLdd(aLdd)
+                                                        
+    {
+    CActiveScheduler::Add(this);
+    }
+        
+// ---------------------------------------------------------------------------
+// Two-phase construction 
+// ---------------------------------------------------------------------------
+//
+void CUsbStateWatcher::ConstructL()
+    {
+    }
+    
+// ---------------------------------------------------------------------------
+// Destruction 
+// ---------------------------------------------------------------------------
+//
+CUsbStateWatcher::~CUsbStateWatcher()
+    {
+    Cancel();
+    }   
+    
+// ---------------------------------------------------------------------------
+// Cancellation 
+// ---------------------------------------------------------------------------
+//
+void CUsbStateWatcher::DoCancel()
+    {
+    iLdd.AlternateDeviceStatusNotifyCancel();
+    }
+    
+// ----------------------------------------------------------------------------
+// Standard active object error function.
+// ----------------------------------------------------------------------------
+//
+TInt CUsbStateWatcher::RunError( TInt /*aError*/ )
+    {
+    return KErrNone;
+    }
+    
+// ---------------------------------------------------------------------------
+// USB state has changed 
+// ---------------------------------------------------------------------------
+//
+void CUsbStateWatcher::RunL()
+    {
+    if (!(iState & KUsbAlternateSetting))
+        {
+        iObserver.ActAccordinglyToUsbStateL(TUsbcDeviceState(iState));
+        }
+        else 
+        {
+        // Alternate interface setting changed to iDeviceState & ~KUsbAlternateSetting
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// Start listening to USB state changes 
+// ---------------------------------------------------------------------------
+//
+void CUsbStateWatcher::Activate()
+    {
+    
+    FLOG( _L( "[USBDEVCON]\tCUsbStateWatcher::Activate" ) );
+    
+    if(IsActive())
+        {
+        return;
+        }
+        
+    iLdd.AlternateDeviceStatusNotify(iStatus, iState);
+    SetActive();
+    FLOG( _L( "[USBDEVCON]\tCUsbStateWatcher::Activate end" ) );
+     
+    }
+
+