blob: 7ff3b867fc592d8db23afa4650ff7e6cb0f33da7 [file] [log] [blame]
/*
* Copyright (C) 2006-2019 Apple Inc. All rights reserved.
* Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2014 Adobe Systems Incorporated. All rights reserved.
*
* 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"
#include "SVGForeignObjectElement.h"
#include "CSSPropertyNames.h"
#include "RenderSVGForeignObject.h"
#include "RenderSVGResource.h"
#include "SVGLengthValue.h"
#include "SVGNames.h"
#include <wtf/Assertions.h>
#include <wtf/IsoMallocInlines.h>
#include <wtf/NeverDestroyed.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGForeignObjectElement);
inline SVGForeignObjectElement::SVGForeignObjectElement(const QualifiedName& tagName, Document& document)
: SVGGraphicsElement(tagName, document)
, SVGExternalResourcesRequired(this)
{
ASSERT(hasTagName(SVGNames::foreignObjectTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::xAttr, &SVGForeignObjectElement::m_x>();
PropertyRegistry::registerProperty<SVGNames::yAttr, &SVGForeignObjectElement::m_y>();
PropertyRegistry::registerProperty<SVGNames::widthAttr, &SVGForeignObjectElement::m_width>();
PropertyRegistry::registerProperty<SVGNames::heightAttr, &SVGForeignObjectElement::m_height>();
});
}
Ref<SVGForeignObjectElement> SVGForeignObjectElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGForeignObjectElement(tagName, document));
}
void SVGForeignObjectElement::parseAttribute(const QualifiedName& name, const AtomString& value)
{
SVGParsingError parseError = NoError;
if (name == SVGNames::xAttr)
m_x->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, value, parseError));
else if (name == SVGNames::yAttr)
m_y->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, value, parseError));
else if (name == SVGNames::widthAttr)
m_width->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, value, parseError));
else if (name == SVGNames::heightAttr)
m_height->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, value, parseError));
reportAttributeParsingError(parseError, name, value);
SVGGraphicsElement::parseAttribute(name, value);
SVGExternalResourcesRequired::parseAttribute(name, value);
}
void SVGForeignObjectElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::widthAttr || attrName == SVGNames::heightAttr) {
invalidateSVGPresentationAttributeStyle();
return;
}
if (attrName == SVGNames::xAttr || attrName == SVGNames::yAttr) {
updateRelativeLengthsInformation();
if (auto renderer = this->renderer())
RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer);
return;
}
SVGGraphicsElement::svgAttributeChanged(attrName);
SVGExternalResourcesRequired::svgAttributeChanged(attrName);
}
RenderPtr<RenderElement> SVGForeignObjectElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
return createRenderer<RenderSVGForeignObject>(*this, WTFMove(style));
}
bool SVGForeignObjectElement::childShouldCreateRenderer(const Node& child) const
{
// Disallow arbitary SVG content. Only allow proper <svg xmlns="svgNS"> subdocuments.
if (child.isSVGElement())
return child.hasTagName(SVGNames::svgTag);
// Skip over SVG rules which disallow non-SVG kids
return StyledElement::childShouldCreateRenderer(child);
}
bool SVGForeignObjectElement::rendererIsNeeded(const RenderStyle& style)
{
// Suppress foreignObject renderers in SVG hidden containers.
// (https://bugs.webkit.org/show_bug.cgi?id=87297)
// Note that we currently do not support foreignObject instantiation via <use>, hence it is safe
// to use parentElement() here. If that changes, this method should be updated to use
// parentOrShadowHostElement() instead.
auto ancestor = makeRefPtr(parentElement());
while (ancestor && ancestor->isSVGElement()) {
if (ancestor->renderer() && ancestor->renderer()->isSVGHiddenContainer())
return false;
ancestor = ancestor->parentElement();
}
return SVGGraphicsElement::rendererIsNeeded(style);
}
}