diff -r 000000000000 -r 2f259fa3e83a uifw/AvKon/src/aknsignaldataobserver.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uifw/AvKon/src/aknsignaldataobserver.cpp	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,149 @@
+/*
+* Copyright (c) 2006-2006 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:  Updates the signal level control in status pane. 
+*
+*/
+
+
+// INCLUDE FILES
+#include "aknsignaldataobserver.h"
+#include "aknstatuspanedata.h"
+#include "AknSignal.h"
+#include "AknSignalStrength.h"
+
+#include "aknstatuspanedatasubscriber.h"
+#include <eikspane.h>
+#include <avkon.hrh>
+#include <eikapp.h>
+#include <eikappui.h>
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CAknSignalDataObserver::CAknSignalDataObserver
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CAknSignalDataObserver::CAknSignalDataObserver(CAknSignalPane* aSignalPane)
+	{
+	iSignalPane = aSignalPane;
+	iSignalPane->MopGetObject(iDataSubscriber);
+	if (iDataSubscriber)
+		{
+		iDataSubscriber->AddObserver(this); 
+		}
+    }
+
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CAknSignalDataObserver::~CAknSignalDataObserver()
+	{
+	if (iDataSubscriber)
+		{
+		iDataSubscriber->RemoveObserver(this); 
+		}
+    }
+
+// -----------------------------------------------------------------------------
+// CAknSignalDataObserver::HandleUpdateL
+// Updates UI control.    
+// -----------------------------------------------------------------------------
+//
+void CAknSignalDataObserver::HandleUpdateL(const TAknStatusPaneStateData& aData)
+	{
+	if (!iDataSubscriber)
+		return;	
+	
+  	TAknSignalState state = aData.iSignalState;	
+
+	// If this pane is not in current layout, no update. Update happens 
+	// when status pane layout is changed.
+    CEikStatusPaneBase* statusPane = CEikStatusPaneBase::Current();
+   	if (!statusPane || 
+   		!statusPane->PaneCapabilities(TUid::Uid(EEikStatusPaneUidSignal)).IsInCurrentLayout())
+   		{
+		return;
+   		}
+	
+   	// Animation is not shown in the background unless update level has been 
+   	// set above ERefreshLevelMedium.
+    TBool updateAnimation = 
+    	(!iDataSubscriber->IsBackground() || 
+    	 iDataSubscriber->RefreshLevel() > CAknStatusPaneDataSubscriber::ERefreshLevelMedium);
+	
+	// Update only if changed to avoid unncessary redraws etc.
+	TBool strengthChanged = state.iSignalStrength != iSignalPane->SignalLevel();	
+	TBool iconChanged = state.iIconState != iSignalPane->SignalState();
+	
+	// Set signal strenght (this handles also Offline status)
+	if (strengthChanged)
+		iSignalPane->SetSignalLevel(state.iSignalStrength);
+	
+	// Set signal icon
+	if (iconChanged)
+		{
+		if (state.iIconState >= EAknSignalGprsIndicatorOff &&
+		    state.iIconState < EAknSignalCommonPacketDataIndicatorOff)
+		    {
+		    // GPRS
+		    iSignalPane->ShowGprsIcon(state.iIconState);
+		    }
+		else if (state.iIconState >= EAknSignalCommonPacketDataIndicatorOff &&
+		    state.iIconState < EAknSignalWcdmaIndicatorOff)
+			{
+			// Common packet data
+		    iSignalPane->ShowCommonPacketDataIcon(state.iIconState);				
+			}    
+		else if (state.iIconState >= EAknSignalWcdmaIndicatorOff &&
+		    state.iIconState < EAknSignalCdmaIndicatorOff)
+			{
+			// WCDMA
+		    iSignalPane->ShowWcdmaIcon(state.iIconState);
+			}    
+		else if (state.iIconState >= EAknSignalCdmaIndicatorOff &&
+		    state.iIconState < EAknSignalEdgeIndicatorOff)
+			{
+			// CDMA
+		    iSignalPane->ShowCdmaIcon(state.iIconState);
+			}    
+		else if (state.iIconState >= EAknSignalEdgeIndicatorOff &&
+		    state.iIconState <= EAknSignalEdgeIndicatorMultipdp)
+			{
+			// EDGE
+		    iSignalPane->ShowEdgeIcon(state.iIconState);
+			}    			
+		else if (state.iIconState >= EAknSignalHsdpaIndicatorOff &&
+		    state.iIconState <= EAknSignalHsdpaIndicatorMultipdp)
+			{
+			// HSPDA
+		    iSignalPane->ShowHsdpaIcon(state.iIconState);
+			}    			
+		}
+
+	if (!updateAnimation)
+		{
+		iSignalPane->DisableAnimation();
+		}	
+		
+	if (iconChanged || strengthChanged)
+		iSignalPane->DrawDeferred();			
+}		
+		
+
+//  End of File