/*

* Copyright (c) 2005-2007 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:  Transaction element for publishing empty content

*

*/

#include "xntype.h"

#include "xnnewsticker.h"

#include "xnbitmap.h"

#include "xntext.h"

#include "emptycontenttransactionelement.h"

#include "aixmluiconstants.h"

#include "aixmluiutils.h"

using namespace AiXmlUiController;

using namespace XnImageInterface;

using namespace XnTextInterface;

using namespace AiUiDef::xml;

const TInt KControlIndexOffset = 1;

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

CEmptyContentTransactionElement::CEmptyContentTransactionElement(

                                AiUtility::CContentPriorityMap& aContentPriorityMap)

    : CTransactionElement( aContentPriorityMap ),

      iIndex( KErrNotFound )

    {

    }

CEmptyContentTransactionElement* CEmptyContentTransactionElement::NewL(

                                AiUtility::CContentPriorityMap& aContentPriorityMap)

    {

    CEmptyContentTransactionElement* self =

            new( ELeave ) CEmptyContentTransactionElement( aContentPriorityMap );

    return self;

    }

CEmptyContentTransactionElement::~CEmptyContentTransactionElement()

    {

    }

void CEmptyContentTransactionElement::InitializeL( CXnNodeAppIf& aTarget, TInt aIndex )

    {

    SetTarget( aTarget );

    // Indexes in XML theme run 1...n, but in control interface 0...n-1

    iIndex = aIndex - KControlIndexOffset;

    }

void CEmptyContentTransactionElement::Reset()

    {

    CTransactionElement::Reset();

    iIndex = KErrNotFound;

    }

void CEmptyContentTransactionElement::UpdateDataL()

    {

    CXnType* type = Target().Type();

    if ( type->Type() == XnImageInterface::MXnImageInterface::Type() )

        {

        MXnImageInterface* imageIntr = NULL;

        if ( !XnComponentInterface::MakeInterfaceL( imageIntr, Target() ) )

            {

            User::Leave( KErrNotSupported );

            }

        // Clears the bitmaps from component

        imageIntr->SetContentBitmaps( NULL, NULL );

        }

    else if ( type->Type() == XnTextInterface::MXnTextInterface::Type() ) // text element

            {

            // Get control interface

            XnTextInterface::MXnTextInterface* textControl = NULL;

            XnComponentInterface::MakeInterfaceL( textControl, Target() );

            LeaveIfNull( textControl, KErrNotSupported );

            // Clears the text from component

            textControl->SetTextL( KNullDesC );

            }

    else

        {

        CXnNodeAppIf* parent = Target().ParentL();

        LeaveIfNull( parent, KErrNotSupported );

        const TDesC8& type = LeaveIfNull( parent->Type(), KErrNotSupported )->Type();

        if ( type == XnNewstickerInterface::MXnNewstickerInterface::Type() )

            {

            XnNewstickerInterface::MXnNewstickerInterface* newsticker = NULL;

            XnComponentInterface::MakeInterfaceL( newsticker, *parent );

            LeaveIfNull( newsticker, KErrGeneral );

            TInt titleIndexVal = -1;

            CXnProperty* titleIndex = Target().GetPropertyL( XnPropertyNames::title::KTitleIndex );

            if ( titleIndex )

                {

                TLex8 lex( titleIndex->StringValue() );

                TInt err = lex.Val( titleIndexVal );

                if ( err == KErrNone && titleIndexVal > -1 )

                    {

                    newsticker->DeleteTitle( titleIndexVal );

                    }

                }

            }

        }

    // Clear current content priority

    ClearContentPriorityL();

    }