mirror of
https://github.com/classilla/tenfourfox.git
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253 lines
7.5 KiB
C++
253 lines
7.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/SVGTests.h"
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#include "DOMSVGStringList.h"
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#include "nsSVGFeatures.h"
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#include "mozilla/dom/SVGSwitchElement.h"
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#include "nsCharSeparatedTokenizer.h"
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#include "nsStyleUtil.h"
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#include "mozilla/Preferences.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_ISUPPORTS0(SVGTests)
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nsIAtom** SVGTests::sStringListNames[3] =
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{
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&nsGkAtoms::requiredFeatures,
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&nsGkAtoms::requiredExtensions,
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&nsGkAtoms::systemLanguage,
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};
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SVGTests::SVGTests()
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{
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mStringListAttributes[LANGUAGE].SetIsCommaSeparated(true);
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}
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already_AddRefed<DOMSVGStringList>
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SVGTests::RequiredFeatures()
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{
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nsCOMPtr<nsIDOMSVGElement> elem = do_QueryInterface(this);
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nsSVGElement* element = static_cast<nsSVGElement*>(elem.get());
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return DOMSVGStringList::GetDOMWrapper(
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&mStringListAttributes[FEATURES], element, true, FEATURES);
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}
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already_AddRefed<DOMSVGStringList>
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SVGTests::RequiredExtensions()
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{
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nsCOMPtr<nsIDOMSVGElement> elem = do_QueryInterface(this);
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nsSVGElement* element = static_cast<nsSVGElement*>(elem.get());
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return DOMSVGStringList::GetDOMWrapper(
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&mStringListAttributes[EXTENSIONS], element, true, EXTENSIONS);
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}
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already_AddRefed<DOMSVGStringList>
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SVGTests::SystemLanguage()
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{
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nsCOMPtr<nsIDOMSVGElement> elem = do_QueryInterface(this);
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nsSVGElement* element = static_cast<nsSVGElement*>(elem.get());
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return DOMSVGStringList::GetDOMWrapper(
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&mStringListAttributes[LANGUAGE], element, true, LANGUAGE);
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}
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bool
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SVGTests::HasExtension(const nsAString& aExtension)
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{
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return nsSVGFeatures::HasExtension(aExtension);
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}
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bool
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SVGTests::IsConditionalProcessingAttribute(const nsIAtom* aAttribute) const
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{
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for (uint32_t i = 0; i < ArrayLength(sStringListNames); i++) {
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if (aAttribute == *sStringListNames[i]) {
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return true;
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}
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}
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return false;
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}
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int32_t
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SVGTests::GetBestLanguagePreferenceRank(const nsSubstring& aAcceptLangs) const
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{
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const nsDefaultStringComparator defaultComparator;
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if (!mStringListAttributes[LANGUAGE].IsExplicitlySet()) {
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return -2;
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}
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int32_t lowestRank = -1;
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for (uint32_t i = 0; i < mStringListAttributes[LANGUAGE].Length(); i++) {
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nsCharSeparatedTokenizer languageTokenizer(aAcceptLangs, ',');
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int32_t index = 0;
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while (languageTokenizer.hasMoreTokens()) {
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const nsSubstring &languageToken = languageTokenizer.nextToken();
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bool exactMatch = (languageToken == mStringListAttributes[LANGUAGE][i]);
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bool prefixOnlyMatch =
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!exactMatch &&
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nsStyleUtil::DashMatchCompare(mStringListAttributes[LANGUAGE][i],
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languageTokenizer.nextToken(),
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defaultComparator);
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if (index == 0 && exactMatch) {
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// best possible match
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return 0;
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}
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if ((exactMatch || prefixOnlyMatch) &&
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(lowestRank == -1 || 2 * index + prefixOnlyMatch < lowestRank)) {
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lowestRank = 2 * index + prefixOnlyMatch;
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}
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++index;
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}
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}
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return lowestRank;
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}
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const nsString * const SVGTests::kIgnoreSystemLanguage = (nsString *) 0x01;
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bool
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SVGTests::PassesConditionalProcessingTests(const nsString *aAcceptLangs) const
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{
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// Required Features
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if (mStringListAttributes[FEATURES].IsExplicitlySet()) {
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if (mStringListAttributes[FEATURES].IsEmpty()) {
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return false;
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}
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nsCOMPtr<nsIContent> content(
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do_QueryInterface(const_cast<SVGTests*>(this)));
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for (uint32_t i = 0; i < mStringListAttributes[FEATURES].Length(); i++) {
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if (!nsSVGFeatures::HasFeature(content, mStringListAttributes[FEATURES][i])) {
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return false;
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}
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}
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}
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// Required Extensions
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//
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// The requiredExtensions attribute defines a list of required language
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// extensions. Language extensions are capabilities within a user agent that
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// go beyond the feature set defined in the SVG specification.
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// Each extension is identified by a URI reference.
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// For now, claim that mozilla's SVG implementation supports XHTML and MathML.
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if (mStringListAttributes[EXTENSIONS].IsExplicitlySet()) {
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if (mStringListAttributes[EXTENSIONS].IsEmpty()) {
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return false;
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}
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for (uint32_t i = 0; i < mStringListAttributes[EXTENSIONS].Length(); i++) {
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if (!nsSVGFeatures::HasExtension(mStringListAttributes[EXTENSIONS][i])) {
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return false;
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}
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}
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}
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if (aAcceptLangs == kIgnoreSystemLanguage) {
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return true;
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}
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// systemLanguage
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//
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// Evaluates to "true" if one of the languages indicated by user preferences
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// exactly equals one of the languages given in the value of this parameter,
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// or if one of the languages indicated by user preferences exactly equals a
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// prefix of one of the languages given in the value of this parameter such
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// that the first tag character following the prefix is "-".
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if (mStringListAttributes[LANGUAGE].IsExplicitlySet()) {
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if (mStringListAttributes[LANGUAGE].IsEmpty()) {
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return false;
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}
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// Get our language preferences
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const nsAutoString acceptLangs(aAcceptLangs ? *aAcceptLangs :
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Preferences::GetLocalizedString("intl.accept_languages"));
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if (acceptLangs.IsEmpty()) {
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NS_WARNING("no default language specified for systemLanguage conditional test");
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return false;
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}
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const nsDefaultStringComparator defaultComparator;
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for (uint32_t i = 0; i < mStringListAttributes[LANGUAGE].Length(); i++) {
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nsCharSeparatedTokenizer languageTokenizer(acceptLangs, ',');
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while (languageTokenizer.hasMoreTokens()) {
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if (nsStyleUtil::DashMatchCompare(mStringListAttributes[LANGUAGE][i],
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languageTokenizer.nextToken(),
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defaultComparator)) {
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return true;
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}
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}
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}
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return false;
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}
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return true;
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}
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bool
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SVGTests::ParseConditionalProcessingAttribute(nsIAtom* aAttribute,
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const nsAString& aValue,
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nsAttrValue& aResult)
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{
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for (uint32_t i = 0; i < ArrayLength(sStringListNames); i++) {
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if (aAttribute == *sStringListNames[i]) {
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nsresult rv = mStringListAttributes[i].SetValue(aValue);
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if (NS_FAILED(rv)) {
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mStringListAttributes[i].Clear();
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}
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MaybeInvalidate();
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return true;
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}
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}
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return false;
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}
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void
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SVGTests::UnsetAttr(const nsIAtom* aAttribute)
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{
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for (uint32_t i = 0; i < ArrayLength(sStringListNames); i++) {
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if (aAttribute == *sStringListNames[i]) {
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mStringListAttributes[i].Clear();
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MaybeInvalidate();
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return;
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}
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}
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}
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nsIAtom*
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SVGTests::GetAttrName(uint8_t aAttrEnum) const
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{
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return *sStringListNames[aAttrEnum];
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}
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void
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SVGTests::GetAttrValue(uint8_t aAttrEnum, nsAttrValue& aValue) const
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{
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MOZ_ASSERT(aAttrEnum < ArrayLength(sStringListNames),
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"aAttrEnum out of range");
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aValue.SetTo(mStringListAttributes[aAttrEnum], nullptr);
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}
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void
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SVGTests::MaybeInvalidate()
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{
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nsCOMPtr<nsIDOMSVGElement> elem = do_QueryInterface(this);
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nsSVGElement* element = static_cast<nsSVGElement*>(elem.get());
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nsIContent* parent = element->GetFlattenedTreeParent();
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if (parent &&
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parent->NodeInfo()->Equals(nsGkAtoms::svgSwitch, kNameSpaceID_SVG)) {
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static_cast<dom::SVGSwitchElement*>(parent)->MaybeInvalidate();
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}
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}
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} // namespace dom
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} // namespace mozilla
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