/*

    Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>

                  2004, 2005, 2006 Rob Buis <buis@kde.org>

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Library General Public

    License as published by the Free Software Foundation; either

    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License

    along with this library; see the file COPYING.LIB.  If not, write to

    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    Boston, MA 02110-1301, USA.

*/

#include "config.h"

#if ENABLE(SVG)

#include "SVGTRefElement.h"

#include "RenderSVGInline.h"

#include "RenderSVGResource.h"

#include "SVGDocument.h"

#include "SVGNames.h"

#include "Text.h"

#include "XLinkNames.h"

namespace WebCore {

SVGTRefElement::SVGTRefElement(const QualifiedName& tagName, Document* doc)

    : SVGTextPositioningElement(tagName, doc)

    , SVGURIReference()

{

}

SVGTRefElement::~SVGTRefElement()

{

}

void SVGTRefElement::updateReferencedText()

{

    Element* target = document()->getElementById(SVGURIReference::getTarget(href()));

    String textContent;

    if (target && target->isSVGElement())

        textContent = static_cast<SVGElement*>(target)->textContent();

    ExceptionCode ignore = 0;

    setTextContent(textContent, ignore);

}

void SVGTRefElement::parseMappedAttribute(Attribute* attr)

{

    if (SVGURIReference::parseMappedAttribute(attr)) {

        updateReferencedText();

        return;

    }

    SVGTextPositioningElement::parseMappedAttribute(attr);

}

void SVGTRefElement::svgAttributeChanged(const QualifiedName& attrName)

{

    SVGTextPositioningElement::svgAttributeChanged(attrName);

    if (!renderer())

        return;

    if (SVGURIReference::isKnownAttribute(attrName))

        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer());

}

void SVGTRefElement::synchronizeProperty(const QualifiedName& attrName)

{

    SVGTextPositioningElement::synchronizeProperty(attrName);

    if (attrName == anyQName() || SVGURIReference::isKnownAttribute(attrName))

        synchronizeHref();

}

bool SVGTRefElement::childShouldCreateRenderer(Node* child) const

{

    if (child->isTextNode() || child->hasTagName(SVGNames::tspanTag) ||

        child->hasTagName(SVGNames::trefTag))

        return true;

    return false;

}

RenderObject* SVGTRefElement::createRenderer(RenderArena* arena, RenderStyle*)

{

    return new (arena) RenderSVGInline(this);

}

}

#endif // ENABLE(SVG)