/** @file

* Copyright (c) 2005-2006 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:  CUpnpStateUpdateHandler

*

*/

// INCLUDE FILES

#include "upnpstateupdatehandler.h"

#include "upnpavcpstring.h"

// CONSTANTS

using namespace UpnpAVCPStrings;

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

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

// CUpnpStateUpdateHandler::CUpnpStateUpdateHandler

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

// might leave.

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

//

CUpnpStateUpdateHandler::CUpnpStateUpdateHandler( 

                                         MUpnpAVControlPointObserver& aAVCPObserver,

                                         CUpnpAVControlPoint& aAVCP )

    :iAVControlPointObserver( aAVCPObserver ), iAVCP( aAVCP )

    {

	}

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

// CUpnpStateUpdateHandler::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CUpnpStateUpdateHandler::ConstructL() 

	{

	}

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

// CSuperDir::NewL

// Two-phased constructor.

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

//

CUpnpStateUpdateHandler* CUpnpStateUpdateHandler::NewL(

            MUpnpAVControlPointObserver& aAVCPObserver,

            CUpnpAVControlPoint& aAVCP )

    {

	CUpnpStateUpdateHandler* self = new (ELeave) CUpnpStateUpdateHandler( 

        aAVCPObserver, aAVCP );

	CleanupStack::PushL( self );

	self->ConstructL();

	CleanupStack::Pop( self );

	return self;

	}

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

// CUpnpStateUpdateHandler::~CUpnpStateUpdateHandler

// Destructor

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

//

CUpnpStateUpdateHandler::~CUpnpStateUpdateHandler()	

	{

	}

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

// CUpnpStateUpdateHandler::ContentDirectoryStateUpdated

// In this function are update events from content directory handled.

// (other items were commented in a header)

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

//

TInt CUpnpStateUpdateHandler::ContentDirectoryStateUpdated( CUpnpDevice& aDevice, 

                                                   CUpnpService*& aService)

    {

    CUpnpStateVariable* systemUpdateId = 

        aService->StateVariable( KSystemUpdateID );

    CUpnpStateVariable* containerUpdateIds = 

        aService->StateVariable( KContainerUpdateIDs );

    CUpnpStateVariable* transferIds = 

        aService->StateVariable( KTransferIds );       

    if( !(systemUpdateId || containerUpdateIds || transferIds) )

        {

        return KErrArgument;

        }

    //

    if( systemUpdateId )

        {

        TLex8 updateidLex( systemUpdateId->Value() );

        TInt systemUpdate;

        updateidLex.Val( systemUpdate );

        iAVControlPointObserver.CdsUpdateEvent(

            aDevice.Uuid(),

            systemUpdate

            );

        }

    if( containerUpdateIds )

        {

        iAVControlPointObserver.CdsContainerEvent( 

            aDevice.Uuid(),

            containerUpdateIds->Value() 

            );

        }

    if( transferIds )

        {

        iAVControlPointObserver.CdsTransferEvent( 

            aDevice.Uuid(),

            transferIds->Value() 

            );

        }

    return KErrNone;

    }

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

// CUpnpStateUpdateHandler::StateUpdatedL

// This is the place to start handling state updates

// (other items were commented in a header)

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

//

TInt CUpnpStateUpdateHandler::StateUpdated(CUpnpService*& aService)

	{

    TInt err( KErrNone );

	CUpnpDevice& device = aService->Device();

    if (aService->ServiceType().Match( KRenderingControl ) != KErrNotFound )

        {

        err =  RenderingControlStateUpdated( device, aService );

        }

    else if (aService->ServiceType().Match( KConnectionManager ) != KErrNotFound )

        {

        err = ConnectionManagerStateUpdated( device, aService );

        }

    else if (aService->ServiceType().Match( KAVTransport ) != KErrNotFound )

        {

        err = AVTransportStateUpdated( device, aService );        

        }

    else if (aService->ServiceType().Match( KContentDirectory ) != KErrNotFound )

        {

        err = ContentDirectoryStateUpdated( device, aService );        

        }

    else

        {

        err = KErrGeneral;

        }

    return err;

    }

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

// CUpnpStateUpdateHandler::RenderingControlStateUpdated

// In this function are rendering control events are handled.

// (other items were commented in a header)

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

//

TInt CUpnpStateUpdateHandler::RenderingControlStateUpdated( CUpnpDevice& aDevice,

                                                        CUpnpService*& aService )

    {

    CUpnpStateVariable* lastChange = aService->StateVariable( KLastChange );

    if( !lastChange )

        {

        return KErrArgument;

        }

    else

        {

        iAVControlPointObserver.RcLastChangeEvent(

            aDevice.Uuid(),

            lastChange->Value() 

            );

        return KErrNone;

        }

    }

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

// CUpnpStateUpdateHandler::KAVTransportStateUpdatedL

// In this function are updates for mediarenderer handled.

// (other items were commented in a header)

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

//

TInt CUpnpStateUpdateHandler::AVTransportStateUpdated( CUpnpDevice& aDevice,

                                                   CUpnpService*& aService )

    {

    CUpnpStateVariable* lastChange = aService->StateVariable( KLastChange );

    if( !lastChange )

        {

        return KErrArgument;

        }

    else

        {

        iAVControlPointObserver.AvtLastChangeEvent(

            aDevice.Uuid(),

            lastChange->Value() 

            );

        return KErrNone;

        }

    }

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

// CUpnpStateUpdateHandler::ConnectionManagerStateUpdated

// In this function are update events from rendering control handled.

// (other items were commented in a header)

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

//

TInt CUpnpStateUpdateHandler::ConnectionManagerStateUpdated(CUpnpDevice& aDevice, 

                                                        CUpnpService*& aService)

    {

    CUpnpStateVariable* source = 

        aService->StateVariable( KSourceProtocolInfo );

    CUpnpStateVariable* sink = 

        aService->StateVariable( KSinkProtocolInfo );

    CUpnpStateVariable* connections = 

        aService->StateVariable( KCurrentConnectionIds );       

    if( !(source || sink || connections) )

        {

        return KErrArgument;

        }

    if( source )

        {

        iAVControlPointObserver.CmSourceEvent(

            aDevice.Uuid(),

            source->Value()

            );

        }

    if( sink )

        {

        iAVControlPointObserver.CmSinkEvent( 

            aDevice.Uuid(),

            sink->Value() 

            );

        }

    if( connections )

        {

        iAVControlPointObserver.CmConnectionsEvent( 

            aDevice.Uuid(),

            connections->Value() 

            );

        }

    return KErrNone;

    }