void StyleScopeResolver::matchHostRules(const Element* element, Vector<RuleSet*>& matchedRules)
{
if (m_atHostRules.isEmpty())
return;
ElementShadow* shadow = element->shadow();
if (!shadow)
return;
// 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.
for (ShadowRoot* shadowRoot = shadow->youngestShadowRoot(); shadowRoot; shadowRoot = shadowRoot->olderShadowRoot()) {
if (RuleSet* ruleSet = atHostRuleSetFor(shadowRoot))
matchedRules.append(ruleSet);
if (!shadowRoot->hasShadowInsertionPoint())
break;
}
}
bool StyleScopeResolver::styleSharingCandidateMatchesHostRules(const Element* element)
{
if (m_atHostRules.isEmpty())
return false;
ElementShadow* shadow = element->shadow();
if (!shadow)
return false;
// 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 avoid always traversing
// shadow roots.
for (ShadowRoot* shadowRoot = shadow->youngestShadowRoot(); shadowRoot; shadowRoot = shadowRoot->olderShadowRoot()) {
if (atHostRuleSetFor(shadowRoot))
return true;
if (!shadowRoot->hasShadowInsertionPoint())
break;
}
return false;
}