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-rw-r--r--dom/svg/SVGTests.cpp201
1 files changed, 201 insertions, 0 deletions
diff --git a/dom/svg/SVGTests.cpp b/dom/svg/SVGTests.cpp
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+++ b/dom/svg/SVGTests.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/SVGTests.h"
+#include "DOMSVGStringList.h"
+#include "nsIContent.h"
+#include "nsIContentInlines.h"
+#include "mozilla/dom/SVGSwitchElement.h"
+#include "nsCharSeparatedTokenizer.h"
+#include "nsStyleUtil.h"
+#include "mozilla/Preferences.h"
+
+namespace mozilla::dom {
+
+nsStaticAtom* const SVGTests::sStringListNames[2] = {
+ nsGkAtoms::requiredExtensions,
+ nsGkAtoms::systemLanguage,
+};
+
+SVGTests::SVGTests() {
+ mStringListAttributes[LANGUAGE].SetIsCommaSeparated(true);
+}
+
+already_AddRefed<DOMSVGStringList> SVGTests::RequiredExtensions() {
+ return DOMSVGStringList::GetDOMWrapper(&mStringListAttributes[EXTENSIONS],
+ AsSVGElement(), true, EXTENSIONS);
+}
+
+already_AddRefed<DOMSVGStringList> SVGTests::SystemLanguage() {
+ return DOMSVGStringList::GetDOMWrapper(&mStringListAttributes[LANGUAGE],
+ AsSVGElement(), true, LANGUAGE);
+}
+
+bool SVGTests::HasExtension(const nsAString& aExtension) const {
+#define SVG_SUPPORTED_EXTENSION(str) \
+ if (aExtension.EqualsLiteral(str)) return true;
+ SVG_SUPPORTED_EXTENSION("http://www.w3.org/1999/xhtml")
+ nsNameSpaceManager* nameSpaceManager = nsNameSpaceManager::GetInstance();
+ if (AsSVGElement()->IsInChromeDocument() ||
+ !nameSpaceManager->mMathMLDisabled) {
+ SVG_SUPPORTED_EXTENSION("http://www.w3.org/1998/Math/MathML")
+ }
+#undef SVG_SUPPORTED_EXTENSION
+
+ return false;
+}
+
+bool SVGTests::IsConditionalProcessingAttribute(
+ const nsAtom* aAttribute) const {
+ for (uint32_t i = 0; i < ArrayLength(sStringListNames); i++) {
+ if (aAttribute == sStringListNames[i]) {
+ return true;
+ }
+ }
+ return false;
+}
+
+int32_t SVGTests::GetBestLanguagePreferenceRank(
+ const nsAString& aAcceptLangs) const {
+ if (!mStringListAttributes[LANGUAGE].IsExplicitlySet()) {
+ return -2;
+ }
+
+ int32_t lowestRank = -1;
+
+ for (uint32_t i = 0; i < mStringListAttributes[LANGUAGE].Length(); i++) {
+ int32_t index = 0;
+ for (const nsAString& languageToken :
+ nsCharSeparatedTokenizer(aAcceptLangs, ',').ToRange()) {
+ bool exactMatch = languageToken.Equals(mStringListAttributes[LANGUAGE][i],
+ nsCaseInsensitiveStringComparator);
+ bool prefixOnlyMatch =
+ !exactMatch && nsStyleUtil::DashMatchCompare(
+ mStringListAttributes[LANGUAGE][i], languageToken,
+ nsCaseInsensitiveStringComparator);
+ if (index == 0 && exactMatch) {
+ // best possible match
+ return 0;
+ }
+ if ((exactMatch || prefixOnlyMatch) &&
+ (lowestRank == -1 || 2 * index + prefixOnlyMatch < lowestRank)) {
+ lowestRank = 2 * index + prefixOnlyMatch;
+ }
+ ++index;
+ }
+ }
+ return lowestRank;
+}
+
+bool SVGTests::PassesConditionalProcessingTestsIgnoringSystemLanguage() const {
+ // Required Extensions
+ //
+ // The requiredExtensions attribute defines a list of required language
+ // extensions. Language extensions are capabilities within a user agent that
+ // go beyond the feature set defined in the SVG specification.
+ // Each extension is identified by a URI reference.
+ // For now, claim that mozilla's SVG implementation supports XHTML and MathML.
+ if (mStringListAttributes[EXTENSIONS].IsExplicitlySet()) {
+ if (mStringListAttributes[EXTENSIONS].IsEmpty()) {
+ return false;
+ }
+ for (uint32_t i = 0; i < mStringListAttributes[EXTENSIONS].Length(); i++) {
+ if (!HasExtension(mStringListAttributes[EXTENSIONS][i])) {
+ return false;
+ }
+ }
+ }
+ return true;
+}
+
+bool SVGTests::PassesConditionalProcessingTests() const {
+ if (!PassesConditionalProcessingTestsIgnoringSystemLanguage()) {
+ return false;
+ }
+
+ // systemLanguage
+ //
+ // Evaluates to "true" if one of the languages indicated by user preferences
+ // exactly equals one of the languages given in the value of this parameter,
+ // or if one of the languages indicated by user preferences exactly equals a
+ // prefix of one of the languages given in the value of this parameter such
+ // that the first tag character following the prefix is "-".
+ if (mStringListAttributes[LANGUAGE].IsExplicitlySet()) {
+ if (mStringListAttributes[LANGUAGE].IsEmpty()) {
+ return false;
+ }
+
+ // Get our language preferences
+ nsAutoString acceptLangs;
+ Preferences::GetLocalizedString("intl.accept_languages", acceptLangs);
+
+ if (acceptLangs.IsEmpty()) {
+ NS_WARNING(
+ "no default language specified for systemLanguage conditional test");
+ return false;
+ }
+
+ for (uint32_t i = 0; i < mStringListAttributes[LANGUAGE].Length(); i++) {
+ nsCharSeparatedTokenizer languageTokenizer(acceptLangs, ',');
+ while (languageTokenizer.hasMoreTokens()) {
+ if (nsStyleUtil::DashMatchCompare(mStringListAttributes[LANGUAGE][i],
+ languageTokenizer.nextToken(),
+ nsCaseInsensitiveStringComparator)) {
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ return true;
+}
+
+bool SVGTests::ParseConditionalProcessingAttribute(nsAtom* aAttribute,
+ const nsAString& aValue,
+ nsAttrValue& aResult) {
+ for (uint32_t i = 0; i < ArrayLength(sStringListNames); i++) {
+ if (aAttribute == sStringListNames[i]) {
+ nsresult rv = mStringListAttributes[i].SetValue(aValue);
+ if (NS_FAILED(rv)) {
+ mStringListAttributes[i].Clear();
+ }
+ MaybeInvalidate();
+ return true;
+ }
+ }
+ return false;
+}
+
+void SVGTests::UnsetAttr(const nsAtom* aAttribute) {
+ for (uint32_t i = 0; i < ArrayLength(sStringListNames); i++) {
+ if (aAttribute == sStringListNames[i]) {
+ mStringListAttributes[i].Clear();
+ MaybeInvalidate();
+ return;
+ }
+ }
+}
+
+nsStaticAtom* SVGTests::GetAttrName(uint8_t aAttrEnum) const {
+ return sStringListNames[aAttrEnum];
+}
+
+void SVGTests::GetAttrValue(uint8_t aAttrEnum, nsAttrValue& aValue) const {
+ MOZ_ASSERT(aAttrEnum < ArrayLength(sStringListNames),
+ "aAttrEnum out of range");
+ aValue.SetTo(mStringListAttributes[aAttrEnum], nullptr);
+}
+
+void SVGTests::MaybeInvalidate() {
+ nsIContent* parent = AsSVGElement()->GetFlattenedTreeParent();
+
+ if (auto* svgSwitch = SVGSwitchElement::FromNodeOrNull(parent)) {
+ svgSwitch->MaybeInvalidate();
+ }
+}
+
+} // namespace mozilla::dom