181 lines
7.5 KiB
C++
181 lines
7.5 KiB
C++
/*
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* Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
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* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
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* Copyright (C) 2015-2021 Apple Inc. All right reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include "SVGTests.h"
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#include "DOMImplementation.h"
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#include "HTMLNames.h"
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#include "SVGElement.h"
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#include "SVGNames.h"
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#include "SVGStringList.h"
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#include <wtf/Language.h>
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#include <wtf/SortedArrayMap.h>
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#if ENABLE(MATHML)
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#include "MathMLNames.h"
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#endif
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namespace WebCore {
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constexpr ComparableLettersLiteral supportedSVGFeatureArray[] = {
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"http://www.w3.org/tr/svg11/feature#animation",
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"http://www.w3.org/tr/svg11/feature#basegraphicsattribute",
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"http://www.w3.org/tr/svg11/feature#basicclip",
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"http://www.w3.org/tr/svg11/feature#basicfilter",
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"http://www.w3.org/tr/svg11/feature#basicfont",
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"http://www.w3.org/tr/svg11/feature#basicpaintattribute",
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"http://www.w3.org/tr/svg11/feature#basicstructure",
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"http://www.w3.org/tr/svg11/feature#basictext",
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"http://www.w3.org/tr/svg11/feature#clip",
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"http://www.w3.org/tr/svg11/feature#conditionalprocessing",
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"http://www.w3.org/tr/svg11/feature#containerattribute",
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"http://www.w3.org/tr/svg11/feature#coreattribute",
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"http://www.w3.org/tr/svg11/feature#cursor",
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"http://www.w3.org/tr/svg11/feature#documenteventsattribute",
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"http://www.w3.org/tr/svg11/feature#extensibility",
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"http://www.w3.org/tr/svg11/feature#externalresourcesrequired",
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"http://www.w3.org/tr/svg11/feature#filter",
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"http://www.w3.org/tr/svg11/feature#font",
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"http://www.w3.org/tr/svg11/feature#gradient",
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"http://www.w3.org/tr/svg11/feature#graphicaleventsattribute",
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"http://www.w3.org/tr/svg11/feature#graphicsattribute",
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"http://www.w3.org/tr/svg11/feature#hyperlinking",
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"http://www.w3.org/tr/svg11/feature#image",
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"http://www.w3.org/tr/svg11/feature#marker",
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"http://www.w3.org/tr/svg11/feature#mask",
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"http://www.w3.org/tr/svg11/feature#opacityattribute",
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"http://www.w3.org/tr/svg11/feature#paintattribute",
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"http://www.w3.org/tr/svg11/feature#pattern",
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"http://www.w3.org/tr/svg11/feature#script",
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"http://www.w3.org/tr/svg11/feature#shape",
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"http://www.w3.org/tr/svg11/feature#structure",
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"http://www.w3.org/tr/svg11/feature#style",
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"http://www.w3.org/tr/svg11/feature#svg",
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"http://www.w3.org/tr/svg11/feature#svg-animation",
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"http://www.w3.org/tr/svg11/feature#svg-static",
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"http://www.w3.org/tr/svg11/feature#svgdom",
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"http://www.w3.org/tr/svg11/feature#svgdom-animation",
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"http://www.w3.org/tr/svg11/feature#svgdom-static",
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"http://www.w3.org/tr/svg11/feature#text",
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"http://www.w3.org/tr/svg11/feature#view",
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"http://www.w3.org/tr/svg11/feature#viewportattribute",
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"http://www.w3.org/tr/svg11/feature#xlinkattribute",
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"org.w3c.dom",
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"org.w3c.dom.svg",
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"org.w3c.dom.svg.static",
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"org.w3c.svg",
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"org.w3c.svg.static",
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};
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constexpr SortedArraySet supportedSVGFeatureSet { supportedSVGFeatureArray };
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SVGTests::SVGTests(SVGElement* contextElement)
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: m_contextElement(*contextElement)
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, m_requiredFeatures(SVGStringList::create(contextElement))
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, m_requiredExtensions(SVGStringList::create(contextElement))
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, m_systemLanguage(SVGStringList::create(contextElement))
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{
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static std::once_flag onceFlag;
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std::call_once(onceFlag, [] {
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PropertyRegistry::registerProperty<SVGNames::requiredFeaturesAttr, &SVGTests::m_requiredFeatures>();
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PropertyRegistry::registerProperty<SVGNames::requiredExtensionsAttr, &SVGTests::m_requiredExtensions>();
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PropertyRegistry::registerProperty<SVGNames::systemLanguageAttr, &SVGTests::m_systemLanguage>();
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});
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}
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bool SVGTests::hasExtension(const String& extension)
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{
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// We recognize XHTML and MathML, as implemented in Gecko and suggested in the SVG Tiny recommendation (http://www.w3.org/TR/SVG11/struct.html#RequiredExtensionsAttribute).
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#if ENABLE(MATHML)
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if (extension == MathMLNames::mathmlNamespaceURI)
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return true;
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#endif
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return extension == HTMLNames::xhtmlNamespaceURI;
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}
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bool SVGTests::isValid() const
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{
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for (auto& feature : m_requiredFeatures->items()) {
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if (feature.isEmpty() || !supportedSVGFeatureSet.contains(feature))
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return false;
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}
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for (auto& language : m_systemLanguage->items()) {
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if (language != defaultLanguage().substring(0, 2))
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return false;
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}
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for (auto& extension : m_requiredExtensions->items()) {
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if (!hasExtension(extension))
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return false;
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}
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return true;
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}
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void SVGTests::parseAttribute(const QualifiedName& attributeName, const AtomString& value)
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{
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if (attributeName == SVGNames::requiredFeaturesAttr)
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m_requiredFeatures->reset(value);
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if (attributeName == SVGNames::requiredExtensionsAttr)
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m_requiredExtensions->reset(value);
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if (attributeName == SVGNames::systemLanguageAttr)
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m_systemLanguage->reset(value);
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}
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void SVGTests::svgAttributeChanged(const QualifiedName& attrName)
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{
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if (!PropertyRegistry::isKnownAttribute(attrName))
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return;
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if (!m_contextElement.isConnected())
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return;
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m_contextElement.invalidateStyleAndRenderersForSubtree();
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}
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void SVGTests::addSupportedAttributes(MemoryCompactLookupOnlyRobinHoodHashSet<QualifiedName>& supportedAttributes)
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{
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supportedAttributes.add(SVGNames::requiredFeaturesAttr);
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supportedAttributes.add(SVGNames::requiredExtensionsAttr);
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supportedAttributes.add(SVGNames::systemLanguageAttr);
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}
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bool SVGTests::hasFeatureForLegacyBindings(const String& feature, const String& version)
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{
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// FIXME: This function is here only to be exposed in the Objective-C and GObject bindings for both Node and DOMImplementation.
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// It's likely that we can just remove this and instead have the bindings return true unconditionally.
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// This is what the DOMImplementation function now does in JavaScript as is now suggested in the DOM specification.
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// The behavior implemented below is quirky, but preserves what WebKit has done for at least the last few years.
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bool hasSVG10FeaturePrefix = startsWithLettersIgnoringASCIICase(feature, "org.w3c.dom.svg") || startsWithLettersIgnoringASCIICase(feature, "org.w3c.svg");
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bool hasSVG11FeaturePrefix = startsWithLettersIgnoringASCIICase(feature, "http://www.w3.org/tr/svg");
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// We don't even try to handle feature names that don't look like the SVG ones, so just return true for all of those.
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if (!(hasSVG10FeaturePrefix || hasSVG11FeaturePrefix))
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return true;
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// If the version number matches the style of the feature name, then use the set to see if the feature is supported.
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if (version.isEmpty() || (hasSVG10FeaturePrefix && version == "1.0") || (hasSVG11FeaturePrefix && version == "1.1"))
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return supportedSVGFeatureSet.contains(feature);
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return false;
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}
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}
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