/*

* 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