/*

    Copyright (C) 2004, 2005, 2007, 2008 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 "SVGGElement.h"

#include "RenderSVGHiddenContainer.h"

#include "RenderSVGResource.h"

#include "RenderSVGTransformableContainer.h"

namespace WebCore {

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

    : SVGStyledTransformableElement(tagName, doc)

    , SVGTests()

    , SVGLangSpace()

    , SVGExternalResourcesRequired()

{

}

SVGGElement::~SVGGElement()

{

}

void SVGGElement::parseMappedAttribute(Attribute* attr)

{

    if (SVGTests::parseMappedAttribute(attr))

        return;

    if (SVGLangSpace::parseMappedAttribute(attr))

        return;

    if (SVGExternalResourcesRequired::parseMappedAttribute(attr))

        return;

    SVGStyledTransformableElement::parseMappedAttribute(attr);

}

void SVGGElement::svgAttributeChanged(const QualifiedName& attrName)

{

    SVGStyledTransformableElement::svgAttributeChanged(attrName);

    RenderObject* renderer = this->renderer();

    if (!renderer)

        return;

    if (SVGStyledTransformableElement::isKnownAttribute(attrName)) {

        renderer->setNeedsTransformUpdate();

        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);

        return;

    }

    if (SVGTests::isKnownAttribute(attrName)

        || SVGLangSpace::isKnownAttribute(attrName)

        || SVGExternalResourcesRequired::isKnownAttribute(attrName))

        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);

}

void SVGGElement::synchronizeProperty(const QualifiedName& attrName)

{

    SVGStyledTransformableElement::synchronizeProperty(attrName);

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

        synchronizeExternalResourcesRequired();

}

RenderObject* SVGGElement::createRenderer(RenderArena* arena, RenderStyle* style)

{

    // SVG 1.1 testsuite explicitely uses constructs like <g display="none"><linearGradient>

    // We still have to create renderers for the <g> & <linearGradient> element, though the

    // subtree may be hidden - we only want the resource renderers to exist so they can be

    // referenced from somewhere else.

    if (style->display() == NONE)

        return new (arena) RenderSVGHiddenContainer(this);

    return new (arena) RenderSVGTransformableContainer(this);

}

}

#endif // ENABLE(SVG)