/*

* Copyright (c) 2005-2008 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:  CSysApEtelNetworkBarObserver implementation

*

*/

// INCLUDES

#include "SysApEtelNetworkBarObserver.h"

#include "SysApAppUi.h"

// Constants 

const TInt8 KNetworkBarsUninitialized(-111);

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

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

// CSysApEtelNetworkBarObserver::NewL() 

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

CSysApEtelNetworkBarObserver* CSysApEtelNetworkBarObserver::NewL( CSysApAppUi& aSysApAppUi, RMobilePhone& aPhone )

    {

    CSysApEtelNetworkBarObserver* self = new(ELeave) CSysApEtelNetworkBarObserver( aSysApAppUi, aPhone );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop();

    return self;

    }

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

// CSysApEtelNetworkBarObserver::CSysApEtelNetworkBarObserver() 

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

CSysApEtelNetworkBarObserver::CSysApEtelNetworkBarObserver( CSysApAppUi& aSysApAppUi, RMobilePhone& aPhone ) 

    : CActive(EPriorityStandard), 

    iSysApAppUi( aSysApAppUi ),

    iPhone( aPhone ),

    iSignalBars( KNetworkBarsUninitialized ),

    iPreviousNetworkBarValue( KNetworkBarsUninitialized )

    {

    CActiveScheduler::Add(this);

    }

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

// CSysApEtelNetworkBarObserver::ConstructL() 

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

void CSysApEtelNetworkBarObserver::ConstructL()

    {    

    // Get initial value (will also reorder in RunL)

    TRACES( RDebug::Print(_L("CSysApEtelNetworkBarObserver::ConstructL - Ordering signal strength change." ) ) );

    OrderNotification();

    iNetworkBarGetter = CSysApEtelNetworkBarGetter::NewL( *this, iPhone );

    iNetworkBarGetter->GetBarCountL();

    }

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

// CSysApEtelNetworkBarObserver::~CSysApEtelNetworkBarObserver() 

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

CSysApEtelNetworkBarObserver::~CSysApEtelNetworkBarObserver()

    {

    TRACES( RDebug::Print( _L("CSysApEtelNetworkBarObserver::~CSysApEtelNetworkBarObserver" ) ) );

    delete iNetworkBarGetter;

    Cancel();

    }

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

// CSysApEtelNetworkBarObserver::RunL

// Handle notification from pubsub session.

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

//

void CSysApEtelNetworkBarObserver::RunL()

    {

    TRACES( RDebug::Print(_L("CSysApEtelNetworkBarObserver::RunL - Signal Strength change: %d, bars: %d" ), iSignalStrength, iSignalBars ) );

    // Reorder notification

    OrderNotification();

    // Notify SysApAppUi

    if ( iPreviousNetworkBarValue != iSignalBars )

        {

        iPreviousNetworkBarValue = iSignalBars;

        TRAPD(err, iSysApAppUi.UpdateSignalBarsL());

        if ( err != KErrNone )

            {

            TRACES( RDebug::Print(_L("CSysApEtelNetworkBarObserver::RunL - UpdateSignalBarsL error: %d" ), err ));                

            }

        }

    }

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

// CSysApEtelNetworkBarObserver::DoCancel

// Handle cancel order on this active object.

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

//

void CSysApEtelNetworkBarObserver::DoCancel()

    {

    TRACES( RDebug::Print( _L("CSysApEtelNetworkBarObserver::DoCancel" ) ) );

    if ( IsActive() )

        {

        iPhone.CancelAsyncRequest( EMobilePhoneNotifySignalStrengthChange );

        }

    }

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

// CSysApEtelNetworkBarObserver::OrderNotification

// Order new notification from CenRep.

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

//

void CSysApEtelNetworkBarObserver::OrderNotification()

    {

    TRACES( RDebug::Print( _L("CSysApEtelNetworkBarObserver::OrderNotification" ) ) );

    iPhone.NotifySignalStrengthChange(iStatus, iSignalStrength, iSignalBars);

    SetActive();

    }

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

// CSysApEtelNetworkBarObserver::GetBarCount

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

//

TInt CSysApEtelNetworkBarObserver::GetBarCount() const

    {

    TRACES( RDebug::Print( _L("CSysApEtelNetworkBarObserver::GetBarCount: iSignalBars=%d, iSignalBarsFromGetter=%d" ),

                           iSignalBars, iSignalBarsFromGetter ) );

    if ( iSignalBars == KNetworkBarsUninitialized ) // notification not yet completed

        {

        return iSignalBarsFromGetter; // from EMobilePhoneGetSignalStrength

        }

    else        

        {

        return iSignalBars; // from EMobilePhoneNotifySignalStrengthChange    

        }        

    }

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

// CSysApEtelNetworkBarObserver::GetBarCountCompleted

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

//

void CSysApEtelNetworkBarObserver::GetBarCountCompleted( TInt8 aSignalBars )

    {

    TRACES( RDebug::Print( _L("CSysApEtelNetworkBarObserver::GetBarCountCompleted:  aSignalBars=%d" ), aSignalBars ) );

    iSignalBarsFromGetter = aSignalBars;

    // Update indicator only if notification isn't completed meanwhile. Use iPreviousNetworkBarValue for

    // evaluation because iSignalBars may be updated even if RunL has not yet been executed

    if ( iPreviousNetworkBarValue == KNetworkBarsUninitialized )

        {

        TRAPD( err, iSysApAppUi.UpdateSignalBarsL() );

        if ( err != KErrNone )

            {

            TRACES( RDebug::Print(_L("CSysApEtelNetworkBarObserver::GetBarCountCompleted - UpdateSignalBarsL error: %d" ), err ));

            }

        }

    // getter object no longer needed as signal bar information is received via notification

    delete iNetworkBarGetter;

    iNetworkBarGetter = NULL;    

    }

// End of file