/*

* Copyright (c) 2002-2004 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:  Component factory interface

*

*/

// User includes

#include "xnappuiadapter.h"

#include "xnviewadapter.h"

#include "xncomponentfactory.h"

#include "xncomponent.h"

#include "xnnodepluginif.h"

#include "xncomponentnodeimpl.h"

#include "xnviewnodeimpl.h"

#include "xncontroladapter.h"

#include "xnpanic.h"

#include "xntype.h"

// Constants

_LIT8( KToolTip, "tooltip" );

_LIT8( KView, "view" );

// ============================= LOCAL FUNCTIONS ===============================

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

// FindParentAdapter

// Find a parent control adapter up the node chain

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

//

static CXnControlAdapter* FindParentAdapter( CXnNode& aNode )

    {

    CXnNode* parent( aNode.Parent() );

    for( ; parent; parent = parent->Parent() )

        {

        CXnControlAdapter* control( parent->Control() );

        if( control )

            {

            return control;

            }

        }

    return NULL;

    }

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

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

// MXnComponentFactory::MXnComponentFactory

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

// might leave.

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

//

EXPORT_C MXnComponentFactory::MXnComponentFactory()

    {

    }

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

// MXnComponentFactory::CreateXnComponentL

// Creates a component

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

//

EXPORT_C MXnComponentFactory::TXnComponentFactoryResponse MXnComponentFactory::CreateXnComponentL(

    CXnNodePluginIf& aNode,

    CXnComponent*& aTargetComponent )

    {

    const TDesC8& type( aNode.Type()->Type() );

    MXnComponentFactory::TXnComponentFactoryResponse response =

        MakeXnComponentL( aNode, aTargetComponent );

    CleanupStack::PushL( aTargetComponent );

    if ( response != EXnFactoryResponseComponentConstructed )

        {

        CleanupStack::PopAndDestroy( aTargetComponent );

        return response;

        }

    CXnControlAdapter* parentAdapter( FindParentAdapter( aNode.Node() ) );

    CXnControlAdapter* adapter( MakeXnControlAdapterL( aNode, parentAdapter ) );

    aTargetComponent->SetNode( aNode );

    if ( type == KView )

        {

        aNode.ViewNodeImpl()->SetComponent( aTargetComponent );

        }

    else

        {

        aNode.ComponentNodeImpl()->SetComponent( aTargetComponent );

        }

    if ( parentAdapter )

        {

        parentAdapter->AppendChildL( *adapter, aNode.Node() );

        }

    aTargetComponent->SetControlAdapter( adapter );

    if ( !adapter )

        {

        CleanupStack::Pop( aTargetComponent );

        return response;

        }

    adapter->SetComponent( aTargetComponent );

    adapter->SetComponentsToInheritVisibility( ETrue );

    if ( type != KToolTip )

        {

        // Don't activate tooltip yet

        adapter->ActivateL();

        }

    CleanupStack::Pop( aTargetComponent );

    return response;

    }

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

// MXnComponentFactory::DoesNodeNeedComponentImplL

// Check whether a node needs a component node implementation

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

//

EXPORT_C TBool MXnComponentFactory::DoesNodeNeedComponentImplL( 

    const TDesC8& /*aType*/ )

    {

    return ETrue;

    }

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

// MXnComponentFactory::MakeXnComponentL

// Factory method to create component

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

//

EXPORT_C MXnComponentFactory::TXnComponentFactoryResponse MXnComponentFactory::MakeXnComponentL(

    CXnNodePluginIf& /*aNode*/,

    CXnComponent*& /*aTargetComponent*/ )

    {

    return EXnFactoryResponseComponentNotSupported;

    }

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

// MXnComponentFactory::MakeXnComponentL

// Factory method to create control adapter

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

//

EXPORT_C CXnControlAdapter* MXnComponentFactory::MakeXnControlAdapterL(

    CXnNodePluginIf& /*aNode*/,

    CXnControlAdapter* /*aParent*/ )

    {

    return NULL;

    }

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

// Default destructor

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

//

EXPORT_C  MXnComponentFactory::~MXnComponentFactory()

    {

    }