/*

* Copyright (c) 2006,2007 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:  This internal Avkon class updates the battery indicator 

*                control in status pane.

*

*/

// INCLUDE FILES

#include "aknbatterydataobserver.h"

#include "aknstatuspanedata.h"

#include "AknBattery.h"

#include "AknBatteryStrength.h"

#include "aknstatuspanedatasubscriber.h"

#include <eikspane.h>

#include <avkon.hrh>

#include <eikapp.h>

#include <eikappui.h>

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// CAknBatteryDataObserver::CAknBatteryDataObserver

// C++ default constructor can NOT contain any code, that

// might leave.

// -----------------------------------------------------------------------------

//

CAknBatteryDataObserver::CAknBatteryDataObserver(

    CAknBatteryPane* aBatteryPane )

	{

	iBatteryPane = aBatteryPane;

	iBatteryPane->MopGetObject( iDataSubscriber );

	if ( iDataSubscriber )

		{

		iDataSubscriber->AddObserver( this ); 

		}

    }

// -----------------------------------------------------------------------------

// Destructor.

// -----------------------------------------------------------------------------

//

CAknBatteryDataObserver::~CAknBatteryDataObserver()

	{

	if ( iDataSubscriber )

		{

		iDataSubscriber->RemoveObserver( this ); 

		}

  }

// -----------------------------------------------------------------------------

// CAknBatteryDataObserver::HandleUpdateL

// Updates UI control state.    

// -----------------------------------------------------------------------------

//

void CAknBatteryDataObserver::HandleUpdateL(

    const TAknStatusPaneStateData& aData )

	{

	if ( !iDataSubscriber )

	    {

		return;

	    }

	// 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( EEikStatusPaneUidBattery ) ).IsInCurrentLayout() )

   		{

		return;

   		}

    TAknBatteryState state = aData.iBatteryState;		

	TBool levelChanged     = EFalse;

	TBool rechargeChanged  = EFalse;

	TBool iconChanged      = EFalse;

   	// Animation is not shown in the background unless update level has been 

   	// set above ERefreshLevelMedium.

    TBool updateAnimation = 

        ( !iDataSubscriber->IsBackground() ||     	

    	  iDataSubscriber->RefreshLevel() > CAknStatusPaneDataSubscriber::ERefreshLevelMedium );

	if ( iBatteryPane->BatteryState() != state.iIconState )

	    {

	    iBatteryPane->SetBatteryStateL( state.iIconState );

	    iconChanged = ETrue;

	    }

	if ( iBatteryPane->BatteryLevel() != state.iBatteryStrength )

		{

		iBatteryPane->SetBatteryLevel( state.iBatteryStrength );

		levelChanged = ETrue;		

		}

	if ( updateAnimation )

		{

		if ( iBatteryPane->Recharging() != state.iRecharging )

			{

			iBatteryPane->SetRecharge( state.iRecharging );										

			rechargeChanged = ETrue;

			}

		}

	else

		{

		if ( iBatteryPane->Recharging() != EFalse )

			{

			iBatteryPane->SetRecharge( EFalse );

			rechargeChanged = ETrue;

			}

		}

	if ( levelChanged || rechargeChanged || iconChanged )

		{

		iBatteryPane->DrawDeferred();	

		}

	}

//  End of File