/*

* Copyright (c) 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:  Visual class for alfred widget model.

      This class queries the visual by name and ID.

*

*/

//INCLUDES

#include "alf/alfreferencetovisual.h"

#include <alf/alfwidgetcontrol.h>

#include <alf/alfvisual.h>

#include "alf/alfelement.h"

#include <osn/ustring.h>

#include <osn/osnnew.h>

#include <alf/alfexceptions.h>

//using namespace osncore;

namespace Alf

    {

////////////////////// CAlfReferenceToVisual //////////////////////

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

OSN_EXPORT AlfReferenceToVisual* AlfReferenceToVisual::create(

    const char *aElementName,

    const char *aVisualName,

    bool aUseDataID)

    {

    return new( EMM ) AlfReferenceToVisual( aElementName, aVisualName, aUseDataID );

    }

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

// Description : Constructor

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

//

AlfReferenceToVisual::AlfReferenceToVisual(const char *aElementName,

        const char *aVisualName, bool aUseDataID)

    {

    mUseDataID = aUseDataID;

    mElementName = UString(aElementName);

    mVisualName = UString(aVisualName);

    }

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

// Description : Class Destructor

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

//

OSN_EXPORT AlfReferenceToVisual::~AlfReferenceToVisual()

    {

    }

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

// Description :Find the referenced visual according to the given data ID.

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

//

OSN_EXPORT CAlfVisual *AlfReferenceToVisual::resolve(CAlfWidgetControl &aControl, unsigned int aDataID)

    {

    // Find the element.

    CAlfVisual* visual = NULL;

    IAlfElement *element = aControl.findElement(mElementName.getUtf8());

    if (element)

        {

        unsigned int dataID = aDataID;

        // Find the visual.

        visual = element->findVisual(mVisualName.getUtf8(), dataID);

        if (!visual)

            {

            // maybe global visual.

            visual = element->findVisual(mVisualName.getUtf8(), 0);

            }

        }

    return visual;

    }

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

// Description :Finds the referenced visual according to the given pointer.

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

//

OSN_EXPORT CAlfVisual *AlfReferenceToVisual::resolve(CAlfWidgetControl &aControl, CAlfVisual* aSourceVisual)

    {

    // Find the element.

    CAlfVisual* visual = NULL;

    //Get the element with the name stored herein

    IAlfElement *element = aControl.findElement(mElementName.getUtf8());

    if (element)

        {

        //is passed visual part of the element

        if (element->contains(*aSourceVisual))

            {

            HBufC8 *buf8 = NULL;

            TRAPD(error,buf8 = aSourceVisual->Tag().AllocL());

            if (error != KErrNone)

            	{

            	ALF_THROW(AlfVisualException,ECommonError,"AlfReferenceToVisual")

            	}

            UString sourceTag((const char*)buf8->Des().PtrZ());

            if (mVisualName.compare(sourceTag)==0) //Is this visual same as what was stored herein?

           		{

           		visual = aSourceVisual;

           		}

            delete buf8;

            }

        }

    return visual;

    }

    } // namespace Alf