--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbengines/usbwatcher/src/tusbindicatorhandler.cpp	Wed Sep 01 12:20:49 2010 +0100
@@ -0,0 +1,102 @@
+/*
+* Copyright (c) 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:  This implements TUsbIndicatorHandler class.
+*
+*/
+
+
+#include <e32std.h>
+#include <AknNotifySignature.h> // SAknNotifierPackage
+#include <avkon.hrh> //EAknIndicatorUSBConnection
+#include "tusbindicatorhandler.h"
+#include "debug.h"
+
+// ---------------------------------------------------------------------------
+// C++ Constructor 
+// ---------------------------------------------------------------------------
+//
+TUsbIndicatorHandler::TUsbIndicatorHandler() 
+    : iDevStateB4Suspend( EUsbDeviceStateUndefined )
+    , iUsbIndicator(EFalse)
+    {
+    }
+
+// ---------------------------------------------------------------------------
+// Change USB Indicator 
+// ---------------------------------------------------------------------------
+//
+void TUsbIndicatorHandler::HandleDeviceStateChange( TUsbDeviceState aStateOld, 
+            TUsbDeviceState aStateNew )
+    {
+    LOG_FUNC
+
+    LOG2( "USB device state changed: %d ==> %d", aStateOld, aStateNew );
+    
+    if ( EUsbDeviceStateConfigured == aStateNew ) // Entering configed state 
+        {
+        // filter out case of configed -> suspended -> configed
+        if ( ( EUsbDeviceStateSuspended != aStateOld ) || 
+             ( EUsbDeviceStateConfigured != iDevStateB4Suspend) )
+            {
+            ShowUsbIndicator( ETrue );
+            }
+        }
+    else if ( EUsbDeviceStateSuspended == aStateNew )
+    // If current state is suspend, we do not change the indicator, but save
+    // the previous state
+        {
+        iDevStateB4Suspend = aStateOld;
+        }
+    else // New device state is not configured, nor suspended
+        {
+        // Hide USB indicator if previous state is either configured, or
+        // suspended AND state before is not configured
+        if( ( EUsbDeviceStateConfigured == aStateOld ) ||
+            ( ( EUsbDeviceStateSuspended == aStateOld ) &&
+              ( EUsbDeviceStateConfigured == iDevStateB4Suspend ) ) ) 
+            {
+            ShowUsbIndicator( EFalse );
+            }
+        } 
+    }
+    
+// ---------------------------------------------------------------------------
+// Show USB Indicator
+// ---------------------------------------------------------------------------
+//
+void TUsbIndicatorHandler::ShowUsbIndicator( TInt aUsbIndicatorState )
+    {
+    LOG_FUNC
+    
+    iUsbIndicator = aUsbIndicatorState;
+    LOG1( "USB indicator state %d", aUsbIndicatorState );
+    RNotifier notifier;
+    TInt err = notifier.Connect();
+    if ( KErrNone == err )
+        {
+        TPckgBuf< SAknNotifierPackage<SAknSmallIndicatorParams> > pckg;
+        pckg().iParamData.iSmallIndicatorUid =
+            TUid::Uid( EAknIndicatorUSBConnection );
+        pckg().iParamData.iValue = aUsbIndicatorState ? 
+            EAknIndicatorStateOn : EAknIndicatorStateOff ;
+        notifier.StartNotifier( KAknSmallIndicatorUid, pckg );
+        notifier.Close();
+        }
+    else
+        {
+        LOG1( "RNotifier::Connect error: %d", err );
+        }
+    }
+
+// End of file