bool ElementShadow::containsActiveStyles() const { for (ShadowRoot* root = youngestShadowRoot(); root; root = root->olderShadowRoot()) { if (root->hasScopedHTMLStyleChild()) return true; if (!root->containsShadowElements()) return false; } return false; }
void ScopedStyleTree::collectScopedResolversForHostedShadowTrees(const Element* element, Vector<ScopedStyleResolver*, 8>& resolvers) { ElementShadow* shadow = element->shadow(); if (!shadow) return; // Adding scoped resolver for active shadow roots for shadow host styling. for (ShadowRoot* shadowRoot = shadow->youngestShadowRoot(); shadowRoot; shadowRoot = shadowRoot->olderShadowRoot()) { if (shadowRoot->hasScopedHTMLStyleChild()) { if (ScopedStyleResolver* resolver = scopedStyleResolverFor(*shadowRoot)) resolvers.append(resolver); } if (!shadowRoot->containsShadowElements()) break; } }
void ScopedStyleResolver::matchHostRules(ElementRuleCollector& collector, bool includeEmptyRules) { // FIXME: Determine tree position. CascadeScope cascadeScope = ignoreCascadeScope; if (m_atHostRules.isEmpty() || !m_scopingNode.isElementNode()) return; ElementShadow* shadow = toElement(m_scopingNode).shadow(); if (!shadow) return; collector.clearMatchedRules(); collector.matchedResult().ranges.lastAuthorRule = collector.matchedResult().matchedProperties.size() - 1; // FIXME(99827): https://bugs.webkit.org/show_bug.cgi?id=99827 // add a new flag to ElementShadow and cache whether any @host @-rules are // applied to the element or not. So we can quickly exit this method // by using the flag. ShadowRoot* shadowRoot = shadow->youngestShadowRoot(); for (; shadowRoot; shadowRoot = shadowRoot->olderShadowRoot()) if (!shadowRoot->containsShadowElements()) break; // All shadow roots have <shadow>. if (!shadowRoot) shadowRoot = shadow->oldestShadowRoot(); RuleRange ruleRange = collector.matchedResult().ranges.authorRuleRange(); SelectorChecker::BehaviorAtBoundary boundary = static_cast<SelectorChecker::BehaviorAtBoundary>(SelectorChecker::DoesNotCrossBoundary | SelectorChecker::ScopeContainsLastMatchedElement); for (; shadowRoot; shadowRoot = shadowRoot->youngerShadowRoot()) { if (RuleSet* ruleSet = atHostRuleSetFor(shadowRoot)) collector.collectMatchingRules(MatchRequest(ruleSet, includeEmptyRules, &m_scopingNode), ruleRange, boundary, cascadeScope); } collector.sortAndTransferMatchedRules(); }