void StyleSheetContents::parserAppendRule(PassRefPtr<StyleRuleBase> rule)
{
ASSERT(!rule->isCharsetRule());
if (rule->isImportRule()) {
// Parser enforces that @import rules come before anything else except @charset.
ASSERT(m_childRules.isEmpty());
m_importRules.append(static_cast<StyleRuleImport*>(rule.get()));
m_importRules.last()->setParentStyleSheet(this);
m_importRules.last()->requestStyleSheet();
return;
}
#if ENABLE(RESOLUTION_MEDIA_QUERY)
// Add warning message to inspector if dpi/dpcm values are used for screen media.
if (rule->isMediaRule())
reportMediaQueryWarningIfNeeded(singleOwnerDocument(), static_cast<StyleRuleMedia*>(rule.get())->mediaQueries());
#endif
// NOTE: The selector list has to fit into RuleData. <http://webkit.org/b/118369>
// If we're adding a rule with a huge number of selectors, split it up into multiple rules
if (rule->isStyleRule() && toStyleRule(rule.get())->selectorList().componentCount() > RuleData::maximumSelectorComponentCount) {
Vector<RefPtr<StyleRule>> rules = toStyleRule(rule.get())->splitIntoMultipleRulesWithMaximumSelectorComponentCount(RuleData::maximumSelectorComponentCount);
m_childRules.appendVector(rules);
return;
}
m_childRules.append(rule);
}
void CSSStyleRule::reattach(StyleRuleBase* rule)
{
ASSERT(rule);
m_styleRule = toStyleRule(rule);
if (m_propertiesCSSOMWrapper)
m_propertiesCSSOMWrapper->reattach(m_styleRule->mutableProperties());
}
PassRefPtrWillBeRawPtr<StyleRuleBase> StyleRuleBase::copy() const
{
switch (type()) {
case Style:
return toStyleRule(this)->copy();
case Page:
return toStyleRulePage(this)->copy();
case FontFace:
return toStyleRuleFontFace(this)->copy();
case Media:
return toStyleRuleMedia(this)->copy();
case Supports:
return toStyleRuleSupports(this)->copy();
case Import:
// FIXME: Copy import rules.
ASSERT_NOT_REACHED();
return nullptr;
case Keyframes:
return toStyleRuleKeyframes(this)->copy();
case Viewport:
return toStyleRuleViewport(this)->copy();
case Filter:
return toStyleRuleFilter(this)->copy();
case Unknown:
case Charset:
case Keyframe:
ASSERT_NOT_REACHED();
return nullptr;
}
ASSERT_NOT_REACHED();
return nullptr;
}
StyleRuleBase* StyleRuleBase::copy() const {
switch (type()) {
case Style:
return toStyleRule(this)->copy();
case Page:
return toStyleRulePage(this)->copy();
case FontFace:
return toStyleRuleFontFace(this)->copy();
case Media:
return toStyleRuleMedia(this)->copy();
case Supports:
return toStyleRuleSupports(this)->copy();
case Import:
// FIXME: Copy import rules.
NOTREACHED();
return nullptr;
case Keyframes:
return toStyleRuleKeyframes(this)->copy();
case Viewport:
return toStyleRuleViewport(this)->copy();
case Namespace:
return toStyleRuleNamespace(this)->copy();
case Charset:
case Keyframe:
ASSERT_NOT_REACHED();
return nullptr;
}
ASSERT_NOT_REACHED();
return nullptr;
}
static bool childRulesHaveFailedOrCanceledSubresources(
const HeapVector<Member<StyleRuleBase>>& rules) {
for (unsigned i = 0; i < rules.size(); ++i) {
const StyleRuleBase* rule = rules[i].get();
switch (rule->type()) {
case StyleRuleBase::Style:
if (toStyleRule(rule)->propertiesHaveFailedOrCanceledSubresources())
return true;
break;
case StyleRuleBase::FontFace:
if (toStyleRuleFontFace(rule)
->properties()
.hasFailedOrCanceledSubresources())
return true;
break;
case StyleRuleBase::Media:
if (childRulesHaveFailedOrCanceledSubresources(
toStyleRuleMedia(rule)->childRules()))
return true;
break;
case StyleRuleBase::Charset:
case StyleRuleBase::Import:
case StyleRuleBase::Namespace:
ASSERT_NOT_REACHED();
case StyleRuleBase::Page:
case StyleRuleBase::Keyframes:
case StyleRuleBase::Keyframe:
case StyleRuleBase::Supports:
case StyleRuleBase::Viewport:
break;
}
}
return false;
}
static bool hasDistributedRule(StyleSheetContents* styleSheetContents)
{
const Vector<RefPtr<StyleRuleBase> >& rules = styleSheetContents->childRules();
for (unsigned i = 0; i < rules.size(); i++) {
const StyleRuleBase* rule = rules[i].get();
if (!rule->isStyleRule())
continue;
const StyleRule* styleRule = toStyleRule(rule);
const CSSSelectorList& selectorList = styleRule->selectorList();
for (size_t selectorIndex = 0; selectorIndex != kNotFound; selectorIndex = selectorList.indexOfNextSelectorAfter(selectorIndex)) {
if (selectorList.hasShadowDistributedAt(selectorIndex))
return true;
}
}
return false;
}
PassRefPtrWillBeRawPtr<CSSRule> StyleRuleBase::createCSSOMWrapper(CSSStyleSheet* parentSheet, CSSRule* parentRule) const
{
RefPtrWillBeRawPtr<CSSRule> rule;
StyleRuleBase* self = const_cast<StyleRuleBase*>(this);
switch (type()) {
case Style:
rule = CSSStyleRule::create(toStyleRule(self), parentSheet);
break;
case Page:
rule = CSSPageRule::create(toStyleRulePage(self), parentSheet);
break;
case FontFace:
rule = CSSFontFaceRule::create(toStyleRuleFontFace(self), parentSheet);
break;
case Media:
rule = CSSMediaRule::create(toStyleRuleMedia(self), parentSheet);
break;
case Supports:
rule = CSSSupportsRule::create(toStyleRuleSupports(self), parentSheet);
break;
case Import:
rule = CSSImportRule::create(toStyleRuleImport(self), parentSheet);
break;
case Keyframes:
rule = CSSKeyframesRule::create(toStyleRuleKeyframes(self), parentSheet);
break;
case Viewport:
rule = CSSViewportRule::create(toStyleRuleViewport(self), parentSheet);
break;
case Filter:
rule = CSSFilterRule::create(toStyleRuleFilter(self), parentSheet);
break;
case Unknown:
case Charset:
case Keyframe:
ASSERT_NOT_REACHED();
return nullptr;
}
if (parentRule)
rule->setParentRule(parentRule);
return rule.release();
}
CSSRule* StyleRuleBase::createCSSOMWrapper(CSSStyleSheet* parentSheet,
CSSRule* parentRule) const {
CSSRule* rule = nullptr;
StyleRuleBase* self = const_cast<StyleRuleBase*>(this);
switch (type()) {
case Style:
rule = CSSStyleRule::create(toStyleRule(self), parentSheet);
break;
case Page:
rule = CSSPageRule::create(toStyleRulePage(self), parentSheet);
break;
case FontFace:
rule = CSSFontFaceRule::create(toStyleRuleFontFace(self), parentSheet);
break;
case Media:
rule = CSSMediaRule::create(toStyleRuleMedia(self), parentSheet);
break;
case Supports:
rule = CSSSupportsRule::create(toStyleRuleSupports(self), parentSheet);
break;
case Import:
rule = CSSImportRule::create(toStyleRuleImport(self), parentSheet);
break;
case Keyframes:
rule = CSSKeyframesRule::create(toStyleRuleKeyframes(self), parentSheet);
break;
case Namespace:
rule = CSSNamespaceRule::create(toStyleRuleNamespace(self), parentSheet);
break;
case Viewport:
rule = CSSViewportRule::create(toStyleRuleViewport(self), parentSheet);
break;
case Keyframe:
case Charset:
ASSERT_NOT_REACHED();
return nullptr;
}
if (parentRule)
rule->setParentRule(parentRule);
return rule;
}
void StyleRuleBase::finalizeGarbageCollectedObject()
{
switch (type()) {
case Charset:
toStyleRuleCharset(this)->~StyleRuleCharset();
return;
case Style:
toStyleRule(this)->~StyleRule();
return;
case Page:
toStyleRulePage(this)->~StyleRulePage();
return;
case FontFace:
toStyleRuleFontFace(this)->~StyleRuleFontFace();
return;
case Media:
toStyleRuleMedia(this)->~StyleRuleMedia();
return;
case Supports:
toStyleRuleSupports(this)->~StyleRuleSupports();
return;
case Import:
toStyleRuleImport(this)->~StyleRuleImport();
return;
case Keyframes:
toStyleRuleKeyframes(this)->~StyleRuleKeyframes();
return;
case Keyframe:
toStyleRuleKeyframe(this)->~StyleRuleKeyframe();
return;
case Namespace:
toStyleRuleNamespace(this)->~StyleRuleNamespace();
return;
case Viewport:
toStyleRuleViewport(this)->~StyleRuleViewport();
return;
case Unknown:
return;
}
ASSERT_NOT_REACHED();
}
void StyleRuleBase::destroy()
{
switch (type()) {
case Charset:
delete toStyleRuleCharset(this);
return;
case Style:
delete toStyleRule(this);
return;
case Page:
delete toStyleRulePage(this);
return;
case FontFace:
delete toStyleRuleFontFace(this);
return;
case Media:
delete toStyleRuleMedia(this);
return;
case Supports:
delete toStyleRuleSupports(this);
return;
case Import:
delete toStyleRuleImport(this);
return;
case Keyframes:
delete toStyleRuleKeyframes(this);
return;
case Keyframe:
delete toStyleRuleKeyframe(this);
return;
case Namespace:
delete toStyleRuleNamespace(this);
return;
case Viewport:
delete toStyleRuleViewport(this);
return;
case Unknown:
return;
}
ASSERT_NOT_REACHED();
}
void StyleSheetInvalidationAnalysis::analyzeStyleSheet(StyleSheetContents* styleSheetContents)
{
// Updating the style on the shadow DOM for image fallback content can bring us here when imports
// are still getting loaded in the main document. Just need to exit early as we will return here
// when the imports finish loading.
if (styleSheetContents->isLoading())
return;
// See if all rules on the sheet are scoped to some specific ids or classes.
// Then test if we actually have any of those in the tree at the moment.
const WillBeHeapVector<RefPtrWillBeMember<StyleRuleImport>>& importRules = styleSheetContents->importRules();
for (unsigned i = 0; i < importRules.size(); ++i) {
if (!importRules[i]->styleSheet())
continue;
analyzeStyleSheet(importRules[i]->styleSheet());
if (m_dirtiesAllStyle)
return;
}
if (m_treeScope->rootNode().isShadowRoot())
return;
const WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& rules = styleSheetContents->childRules();
for (unsigned i = 0; i < rules.size(); i++) {
StyleRuleBase* rule = rules[i].get();
if (!rule->isStyleRule()) {
if (ruleAdditionMightRequireDocumentStyleRecalc(rule)) {
m_dirtiesAllStyle = true;
return;
}
continue;
}
StyleRule* styleRule = toStyleRule(rule);
if (!determineSelectorScopes(styleRule->selectorList(), m_idScopes, m_classScopes)) {
m_dirtiesAllStyle = true;
return;
}
}
}
void StyleInvalidationAnalysis::analyzeStyleSheet(StyleSheetContents* styleSheetContents)
{
ASSERT(!styleSheetContents->isLoading());
// See if all rules on the sheet are scoped to some specific ids or classes.
// Then test if we actually have any of those in the tree at the moment.
const Vector<RefPtr<StyleRuleImport> >& importRules = styleSheetContents->importRules();
for (unsigned i = 0; i < importRules.size(); ++i) {
if (!importRules[i]->styleSheet())
continue;
analyzeStyleSheet(importRules[i]->styleSheet());
if (m_dirtiesAllStyle)
return;
}
if (styleSheetContents->hasSingleOwnerNode()) {
Node* ownerNode = styleSheetContents->singleOwnerNode();
if (ownerNode && ownerNode->hasTagName(HTMLNames::styleTag) && toHTMLStyleElement(ownerNode)->isRegisteredAsScoped()) {
m_scopingNodes.append(determineScopingNodeForStyleScoped(toHTMLStyleElement(ownerNode), styleSheetContents));
return;
}
}
const Vector<RefPtr<StyleRuleBase> >& rules = styleSheetContents->childRules();
for (unsigned i = 0; i < rules.size(); i++) {
StyleRuleBase* rule = rules[i].get();
if (!rule->isStyleRule()) {
if (ruleAdditionMightRequireDocumentStyleRecalc(rule)) {
m_dirtiesAllStyle = true;
return;
}
continue;
}
StyleRule* styleRule = toStyleRule(rule);
if (!determineSelectorScopes(styleRule->selectorList(), m_idScopes, m_classScopes)) {
m_dirtiesAllStyle = true;
return;
}
}
}
void StyleRuleBase::finalize()
{
switch (type()) {
case Style:
toStyleRule(this)->~StyleRule();
return;
case Page:
toStyleRulePage(this)->~StyleRulePage();
return;
case FontFace:
toStyleRuleFontFace(this)->~StyleRuleFontFace();
return;
case Media:
toStyleRuleMedia(this)->~StyleRuleMedia();
return;
case Supports:
toStyleRuleSupports(this)->~StyleRuleSupports();
return;
case Import:
toStyleRuleImport(this)->~StyleRuleImport();
return;
case Keyframes:
toStyleRuleKeyframes(this)->~StyleRuleKeyframes();
return;
case Viewport:
toStyleRuleViewport(this)->~StyleRuleViewport();
return;
case Filter:
toStyleRuleFilter(this)->~StyleRuleFilter();
return;
case Unknown:
case Charset:
case Keyframe:
ASSERT_NOT_REACHED();
return;
}
ASSERT_NOT_REACHED();
}
void StyleRuleBase::trace(Visitor* visitor)
{
switch (type()) {
case Style:
toStyleRule(this)->traceAfterDispatch(visitor);
return;
case Page:
toStyleRulePage(this)->traceAfterDispatch(visitor);
return;
case FontFace:
toStyleRuleFontFace(this)->traceAfterDispatch(visitor);
return;
case Media:
toStyleRuleMedia(this)->traceAfterDispatch(visitor);
return;
case Supports:
toStyleRuleSupports(this)->traceAfterDispatch(visitor);
return;
case Import:
toStyleRuleImport(this)->traceAfterDispatch(visitor);
return;
case Keyframes:
toStyleRuleKeyframes(this)->traceAfterDispatch(visitor);
return;
case Viewport:
toStyleRuleViewport(this)->traceAfterDispatch(visitor);
return;
case Filter:
toStyleRuleFilter(this)->traceAfterDispatch(visitor);
return;
case Unknown:
case Charset:
case Keyframe:
ASSERT_NOT_REACHED();
return;
}
ASSERT_NOT_REACHED();
}
void RuleSet::addChildRules(const Vector<RefPtr<StyleRuleBase> >& rules, const MediaQueryEvaluator& medium, AddRuleFlags addRuleFlags)
{
for (unsigned i = 0; i < rules.size(); ++i) {
StyleRuleBase* rule = rules[i].get();
if (rule->isStyleRule()) {
StyleRule* styleRule = toStyleRule(rule);
const CSSSelectorList& selectorList = styleRule->selectorList();
for (size_t selectorIndex = 0; selectorIndex != kNotFound; selectorIndex = selectorList.indexOfNextSelectorAfter(selectorIndex))
addRule(styleRule, selectorIndex, addRuleFlags);
} else if (rule->isMediaRule()) {
StyleRuleMedia* mediaRule = toStyleRuleMedia(rule);
if ((!mediaRule->mediaQueries() || medium.eval(mediaRule->mediaQueries(), &m_viewportDependentMediaQueryResults)))
addChildRules(mediaRule->childRules(), medium, addRuleFlags);
} else if (rule->isFontFaceRule()) {
addFontFaceRule(toStyleRuleFontFace(rule));
} else if (rule->isKeyframesRule()) {
addKeyframesRule(toStyleRuleKeyframes(rule));
} else if (rule->isSupportsRule() && toStyleRuleSupports(rule)->conditionIsSupported()) {
addChildRules(toStyleRuleSupports(rule)->childRules(), medium, addRuleFlags);
}
}
}
