/*

* Copyright (c) 2009-2009 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:   CDisplayServiceLight class implementation.

*

*/

// SYSTEM INCLUDES

#include <cfcontextobject.h>

#include <cfcontextinterface.h>

// USER INCLUDES

#include "displayservicelight.h"

#include "displaysourcecontextdef.h"

#include "trace.h"

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

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

// C++ constructor.

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

//

CDisplayServiceLight::CDisplayServiceLight( MCFContextInterface& aCF ):

    CDisplayServiceBase( CDisplayServiceBase::EDisplayLightStatus, aCF )

    {

    FUNC_LOG;

    }

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

// Symbian 2nd phase constructor.

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

//

void CDisplayServiceLight::ConstructL()

    {

    FUNC_LOG;

    // Call base class

    CDisplayServiceBase::ConstructL();

    // Initialize context object

    iContext->SetSourceL( KDisplaySource );

    iContext->SetTypeL( KDisplayStatusType );

    // Define context:

    // Device: Display.Status.Light

    TInt err = iCF.DefineContext(

        KDisplaySource, KDisplayStatusType, KDisplayStatusTypeSec );

    User::LeaveIfError( err );

    // Initialize light client

    iLight = CHWRMLight::NewL( this );

    }

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

// Symbian two phased constructor.

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

//

CDisplayServiceLight* CDisplayServiceLight::NewL( MCFContextInterface& aCF )

    {

    FUNC_LOG;

    CDisplayServiceLight* self = CDisplayServiceLight::NewLC( aCF );

    CleanupStack::Pop( self );

    return self;

    }

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

// Symbian two phased constructor.

// Leaves pointer in the cleanup stack.

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

//

CDisplayServiceLight* CDisplayServiceLight::NewLC( MCFContextInterface& aCF )

    {

    FUNC_LOG;

    CDisplayServiceLight* self = new ( ELeave ) CDisplayServiceLight( aCF );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// C++ destructor.

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

//

CDisplayServiceLight::~CDisplayServiceLight()

    {

    FUNC_LOG;

    delete iLight;

    }

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

// CDisplayServiceLight::StartL

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

//

void CDisplayServiceLight::StartL()

    {

    FUNC_LOG;

    // Get current display light status value and publish it

    PublishContext( iLight->LightStatus( CHWRMLight::EPrimaryDisplay ) );

    }

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

// CDisplayServiceLight::Stop

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

//

void CDisplayServiceLight::Stop()

    {

    FUNC_LOG;

    // Nothing to do here.

    }

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

// CDisplayServiceLight::LightStatusChanged

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

//

void CDisplayServiceLight::LightStatusChanged(

    TInt aTarget,

    CHWRMLight::TLightStatus aStatus )

    {

    FUNC_LOG;

    if ( aTarget & CHWRMLight::EPrimaryDisplay )

        {

        PublishContext( aStatus );

        }

    }

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

// CDisplayServiceLight::PublishContext

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

//

void CDisplayServiceLight::PublishContext( CHWRMLight::TLightStatus aStatus )

    {

    FUNC_LOG;

    INFO_1( "Primary display light status = %d", aStatus );

    if ( aStatus >= 0 &&

         aStatus < KDisplayStatusTypeValueCount &&

         aStatus != iCurrentStatus )

        {

        // Store new status

        iCurrentStatus = aStatus;

        // Publish context, ignore error values

        TRAP_IGNORE( iContext->SetValueL(

            TPtrC( KDisplayStatusTypeValues[aStatus] ) ) );

        iCF.PublishContext( *iContext, iThread );

        }

    }

// End of file