| /* |
| * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org> |
| * Copyright (C) 2015-2018 Apple Inc. All right 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 "SVGTests.h" |
| |
| #include "DOMImplementation.h" |
| #include "HTMLNames.h" |
| #include "SVGElement.h" |
| #include "SVGNames.h" |
| #include "SVGStringList.h" |
| #include <wtf/Language.h> |
| #include <wtf/NeverDestroyed.h> |
| |
| #if ENABLE(MATHML) |
| #include "MathMLNames.h" |
| #endif |
| |
| namespace WebCore { |
| |
| using namespace SVGNames; |
| |
| static const HashSet<String, ASCIICaseInsensitiveHash>& supportedSVGFeatures() |
| { |
| static NeverDestroyed<HashSet<String, ASCIICaseInsensitiveHash>> features = [] { |
| static const char* const features10[] = { |
| #if ENABLE(SVG_FONTS) |
| "dom", |
| "dom.svg", |
| "dom.svg.static", |
| "svg", |
| "svg.static", |
| #endif |
| }; |
| static const char* const features11[] = { |
| "animation", |
| "basegraphicsattribute", |
| "basicclip", |
| "basicfilter", |
| "basicpaintattribute", |
| "basicstructure", |
| "basictext", |
| "clip", |
| "conditionalprocessing", |
| "containerattribute", |
| "coreattribute", |
| "cursor", |
| "documenteventsattribute", |
| "extensibility", |
| "externalresourcesrequired", |
| "filter", |
| "gradient", |
| "graphicaleventsattribute", |
| "graphicsattribute", |
| "hyperlinking", |
| "image", |
| "marker", |
| "mask", |
| "opacityattribute", |
| "paintattribute", |
| "pattern", |
| "script", |
| "shape", |
| "structure", |
| "style", |
| "svg-animation", |
| "svgdom-animation", |
| "text", |
| "view", |
| "viewportattribute", |
| "xlinkattribute", |
| #if ENABLE(SVG_FONTS) |
| "basicfont", |
| "font", |
| "svg", |
| "svg-static", |
| "svgdom", |
| "svgdom-static", |
| #endif |
| }; |
| HashSet<String, ASCIICaseInsensitiveHash> set; |
| for (auto& feature : features10) |
| set.add(makeString("org.w3c.", feature)); |
| for (auto& feature : features11) |
| set.add(makeString("http://www.w3.org/tr/svg11/feature#", feature)); |
| return set; |
| }(); |
| return features; |
| } |
| |
| SVGTests::SVGTests(SVGElement* contextElement) |
| : m_contextElement(*contextElement) |
| , m_requiredFeatures(SVGStringList::create(contextElement)) |
| , m_requiredExtensions(SVGStringList::create(contextElement)) |
| , m_systemLanguage(SVGStringList::create(contextElement)) |
| { |
| static std::once_flag onceFlag; |
| std::call_once(onceFlag, [] { |
| PropertyRegistry::registerProperty<SVGNames::requiredFeaturesAttr, &SVGTests::m_requiredFeatures>(); |
| PropertyRegistry::registerProperty<SVGNames::requiredExtensionsAttr, &SVGTests::m_requiredExtensions>(); |
| PropertyRegistry::registerProperty<SVGNames::systemLanguageAttr, &SVGTests::m_systemLanguage>(); |
| }); |
| } |
| |
| bool SVGTests::hasExtension(const String& extension) |
| { |
| // 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). |
| #if ENABLE(MATHML) |
| if (extension == MathMLNames::mathmlNamespaceURI) |
| return true; |
| #endif |
| return extension == HTMLNames::xhtmlNamespaceURI; |
| } |
| |
| bool SVGTests::isValid() const |
| { |
| for (auto& feature : m_requiredFeatures->items()) { |
| if (feature.isEmpty() || !supportedSVGFeatures().contains(feature)) |
| return false; |
| } |
| for (auto& language : m_systemLanguage->items()) { |
| if (language != defaultLanguage().substring(0, 2)) |
| return false; |
| } |
| for (auto& extension : m_requiredExtensions->items()) { |
| if (!hasExtension(extension)) |
| return false; |
| } |
| return true; |
| } |
| |
| void SVGTests::parseAttribute(const QualifiedName& attributeName, const AtomicString& value) |
| { |
| if (attributeName == requiredFeaturesAttr) |
| m_requiredFeatures->reset(value); |
| if (attributeName == requiredExtensionsAttr) |
| m_requiredExtensions->reset(value); |
| if (attributeName == systemLanguageAttr) |
| m_systemLanguage->reset(value); |
| } |
| |
| void SVGTests::svgAttributeChanged(const QualifiedName& attrName) |
| { |
| if (!PropertyRegistry::isKnownAttribute(attrName)) |
| return; |
| |
| if (!m_contextElement.isConnected()) |
| return; |
| m_contextElement.invalidateStyleAndRenderersForSubtree(); |
| } |
| |
| void SVGTests::addSupportedAttributes(HashSet<QualifiedName>& supportedAttributes) |
| { |
| supportedAttributes.add(requiredFeaturesAttr); |
| supportedAttributes.add(requiredExtensionsAttr); |
| supportedAttributes.add(systemLanguageAttr); |
| } |
| |
| bool SVGTests::hasFeatureForLegacyBindings(const String& feature, const String& version) |
| { |
| // FIXME: This function is here only to be exposed in the Objective-C and GObject bindings for both Node and DOMImplementation. |
| // It's likely that we can just remove this and instead have the bindings return true unconditionally. |
| // This is what the DOMImplementation function now does in JavaScript as is now suggested in the DOM specification. |
| // The behavior implemented below is quirky, but preserves what WebKit has done for at least the last few years. |
| |
| bool hasSVG10FeaturePrefix = startsWithLettersIgnoringASCIICase(feature, "org.w3c.dom.svg") || startsWithLettersIgnoringASCIICase(feature, "org.w3c.svg"); |
| bool hasSVG11FeaturePrefix = startsWithLettersIgnoringASCIICase(feature, "http://www.w3.org/tr/svg"); |
| |
| // 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. |
| if (!(hasSVG10FeaturePrefix || hasSVG11FeaturePrefix)) |
| return true; |
| |
| // If the version number matches the style of the feature name, then use the set to see if the feature is supported. |
| if (version.isEmpty() || (hasSVG10FeaturePrefix && version == "1.0") || (hasSVG11FeaturePrefix && version == "1.1")) |
| return supportedSVGFeatures().contains(feature); |
| |
| return false; |
| } |
| |
| } |