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/*
* 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 "LegacyRenderSVGForeignObject.h"
#include "LegacyRenderSVGResource.h"
#include "NodeName.h"
#include "RenderSVGForeignObject.h"
#include "SVGElementInlines.h"
#include "SVGLengthValue.h"
#include "SVGNames.h"
#include <wtf/Assertions.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(SVGForeignObjectElement);
inline SVGForeignObjectElement::SVGForeignObjectElement(const QualifiedName& tagName, Document& document)
: SVGGraphicsElement(tagName, document, makeUniqueRef<PropertyRegistry>(*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::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
SVGParsingError parseError = NoError;
switch (name.nodeName()) {
case AttributeNames::xAttr:
Ref { m_x }->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, newValue, parseError));
break;
case AttributeNames::yAttr:
Ref { m_y }->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, newValue, parseError));
break;
case AttributeNames::widthAttr:
Ref { m_width }->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, newValue, parseError));
break;
case AttributeNames::heightAttr:
Ref { m_height }->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, newValue, parseError));
break;
default:
break;
}
reportAttributeParsingError(parseError, name, newValue);
SVGGraphicsElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
void SVGForeignObjectElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (PropertyRegistry::isKnownAttribute(attrName)) {
InstanceInvalidationGuard guard(*this);
if (attrName == SVGNames::widthAttr || attrName == SVGNames::heightAttr)
setPresentationalHintStyleIsDirty();
else {
ASSERT(attrName == SVGNames::xAttr || attrName == SVGNames::yAttr);
updateRelativeLengthsInformation();
updateSVGRendererForElementChange();
}
return;
}
SVGGraphicsElement::svgAttributeChanged(attrName);
}
RenderPtr<RenderElement> SVGForeignObjectElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
protectedDocument()->setMayHaveRenderedSVGForeignObjects();
if (document().settings().layerBasedSVGEngineEnabled())
return createRenderer<RenderSVGForeignObject>(*this, WTFMove(style));
return createRenderer<LegacyRenderSVGForeignObject>(*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.
RefPtr ancestor = parentElement();
if (!ancestor)
return false;
while (ancestor && ancestor->isSVGElement()) {
if (ancestor->renderer() && (ancestor->renderer()->isRenderSVGHiddenContainer() || ancestor->renderer()->isLegacyRenderSVGHiddenContainer()))
return false;
ancestor = ancestor->parentElement();
}
return SVGGraphicsElement::rendererIsNeeded(style);
}
}
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