void CSSGlobalRuleSet::update(Document& document) {
if (!m_isDirty)
return;
m_isDirty = false;
m_features.clear();
m_hasFullscreenUAStyle = false;
CSSDefaultStyleSheets& defaultStyleSheets = CSSDefaultStyleSheets::instance();
if (defaultStyleSheets.defaultStyle()) {
m_features.add(defaultStyleSheets.defaultStyle()->features());
m_hasFullscreenUAStyle = defaultStyleSheets.fullscreenStyleSheet();
}
if (document.isViewSource())
m_features.add(defaultStyleSheets.defaultViewSourceStyle()->features());
if (m_watchedSelectorsRuleSet)
m_features.add(m_watchedSelectorsRuleSet->features());
document.styleEngine().collectScopedStyleFeaturesTo(m_features);
m_siblingRuleSet = makeRuleSet(m_features.siblingRules());
m_uncommonAttributeRuleSet = makeRuleSet(m_features.uncommonAttributeRules());
}
void DocumentRuleSets::collectFeatures()
{
m_features.clear();
// Collect all ids and rules using sibling selectors (:first-child and similar)
// in the current set of stylesheets. Style sharing code uses this information to reject
// sharing candidates.
if (CSSDefaultStyleSheets::defaultStyle)
m_features.add(CSSDefaultStyleSheets::defaultStyle->features());
if (m_authorStyle)
m_features.add(m_authorStyle->features());
if (m_userStyle)
m_features.add(m_userStyle->features());
m_siblingRuleSet = makeRuleSet(m_features.siblingRules);
m_uncommonAttributeRuleSet = makeRuleSet(m_features.uncommonAttributeRules);
}
RuleSet* DocumentRuleSets::ancestorClassRules(AtomicStringImpl* className) const
{
auto addResult = m_ancestorClassRuleSet.add(className, nullptr);
if (addResult.isNewEntry) {
if (auto* rules = m_features.ancestorClassRules.get(className))
addResult.iterator->value = makeRuleSet(*rules);
}
return addResult.iterator->value.get();
}
void finishAddingSelectors() {
m_siblingRuleSet = makeRuleSet(m_ruleSet->features().siblingRules);
m_uncommonAttributeRuleSet =
makeRuleSet(m_ruleSet->features().uncommonAttributeRules);
}
