diff -r 000000000000 -r 4e1aa6a622a0 resourcemgmt/hwrmfmtxwatcherplugin/src/hwrmfmtxusbobserver.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/resourcemgmt/hwrmfmtxwatcherplugin/src/hwrmfmtxusbobserver.cpp	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,209 @@
+/*
+* Copyright (c) 2008 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:  Usb observer implementation for fmtx watcher plugin.
+*
+*/
+
+
+#include "hwrmfmtxusbobserver.h"
+#include "trace.h"
+
+// bitmask for requesting notification of every USB device state change
+const TUint KUsbAllStates = 0xFFFFFFFF;
+
+// ============================ LOCAL FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// UsbConnected()
+// -----------------------------------------------------------------------------
+//
+static TBool UsbConnected( TUsbDeviceState aDeviceState )
+    {
+    INFO_LOG1( "UsbConnected - %d",  aDeviceState);
+
+    if ( aDeviceState == EUsbDeviceStateAttached || aDeviceState == EUsbDeviceStatePowered ||
+    		aDeviceState == EUsbDeviceStateUndefined)
+    	{
+    	RDebug::Print(_L("return false "));
+    	return EFalse;
+    	}
+    else
+    	{
+    	RDebug::Print(_L("return true "));
+    	return ETrue;
+		}
+    }
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CHWRMFmtxUsbObserver::NewL()
+// -----------------------------------------------------------------------------
+//
+CHWRMFmtxUsbObserver* CHWRMFmtxUsbObserver::NewL( MHWRMFmtxConnObserverCallback& aObserver )
+    {
+    FUNC_LOG;
+    
+    CHWRMFmtxUsbObserver* self = new( ELeave ) CHWRMFmtxUsbObserver( aObserver );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMFmtxUsbObserver::~CHWRMFmtxUsbObserver()
+// -----------------------------------------------------------------------------
+//
+CHWRMFmtxUsbObserver::~CHWRMFmtxUsbObserver()
+    {
+    FUNC_LOG;
+    
+    Cancel();
+    iUsbMan.Close();
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMFmtxUsbObserver::GetStatusL
+// -----------------------------------------------------------------------------
+//
+TBool CHWRMFmtxUsbObserver::GetStatusL()
+    {
+    FUNC_LOG;
+    
+    TUsbDeviceState deviceState;
+    TInt err( iUsbMan.GetDeviceState( deviceState ) );
+    
+    LOG_IF_ERROR2( err, "CHWRMFmtxUsbObserver::StartObservingL - err %d, state %d", err, deviceState );
+
+    User::LeaveIfError( err );    	
+    
+    return UsbConnected( deviceState );
+    }
+    
+
+// -----------------------------------------------------------------------------
+// CHWRMFmtxUsbObserver::StartObservingL
+// -----------------------------------------------------------------------------
+//
+void CHWRMFmtxUsbObserver::StartObservingL()
+    {
+    FUNC_LOG;
+    
+    if( !IsActive() )
+        {
+        OrderUsbNotification();
+        
+        // check the initial status, so that only state change is notified
+        iConnected = GetStatusL();
+        }
+    }
+    
+// -----------------------------------------------------------------------------
+// CHWRMFmtxUsbObserver::StopObserving
+// -----------------------------------------------------------------------------
+//
+void CHWRMFmtxUsbObserver::StopObserving()
+    {
+    FUNC_LOG;
+    
+    Cancel();
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMFmtxUsbObserver::CHWRMFmtxUsbObserver()
+// -----------------------------------------------------------------------------
+//
+CHWRMFmtxUsbObserver::CHWRMFmtxUsbObserver( MHWRMFmtxConnObserverCallback& aObserver ) :
+    CActive( EPriorityStandard ),
+    iDeviceState( EUsbDeviceStateUndefined ),
+    iCallback( aObserver ),
+    iConnected( ETrue )
+    {
+    FUNC_LOG;
+    
+    CActiveScheduler::Add( this );
+    }
+            
+// -----------------------------------------------------------------------------
+// CHWRMFmtxUsbObserver::ConstructL
+// -----------------------------------------------------------------------------
+//
+void CHWRMFmtxUsbObserver::ConstructL()
+    {
+    FUNC_LOG;
+    
+    // Connect to usbman
+	TInt err = iUsbMan.Connect();	
+    
+    LOG_IF_ERROR1( err, "CHWRMFmtxUsbObserver::ConstructL - err %d", err );
+    
+    User::LeaveIfError( err );
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMFmtxUsbObserver::OrderUsbNotification()
+// -----------------------------------------------------------------------------
+//
+void CHWRMFmtxUsbObserver::OrderUsbNotification()
+    {
+    FUNC_LOG;
+    
+    iUsbMan.DeviceStateNotification( KUsbAllStates, iDeviceState, iStatus );
+    SetActive();
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMFmtxUsbObserver::RunL()
+// -----------------------------------------------------------------------------
+//
+void CHWRMFmtxUsbObserver::RunL( )
+    {
+    FUNC_LOG;
+    
+    TInt status(iStatus.Int());
+    
+    LOG_IF_ERROR1( status, "CHWRMFmtxUsbObserver::RunL error, status=%d", status );
+
+    TBool connected(UsbConnected( iDeviceState )); // store state before subscribing again
+    
+    // prevent looping due to immediate completion
+    if ( status != KErrCancel && status != KErrServerTerminated )
+        {
+        OrderUsbNotification();    
+        }
+    
+    if ( status == KErrNone )
+        {
+        INFO_LOG2( "CHWRMFmtxUsbObserver::RunL: connected=%d, iConnected=%d", connected, iConnected );
+        if ( connected != iConnected ) // notify only if state has changed
+            {
+            iConnected = connected;    
+            iCallback.HandleConnectionChange( EFmtxWatcherObserverUsb, iConnected );
+            }    
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CHWRMFmtxUsbObserver::DoCancel
+// ---------------------------------------------------------------------------
+//
+void CHWRMFmtxUsbObserver::DoCancel()
+    {
+    FUNC_LOG;
+
+    iUsbMan.DeviceStateNotificationCancel();
+    }
+
+//  End of File