Node* ComposedShadowTreeWalker::traverseChild(const Node* node, TraversalDirection direction) const
{
ASSERT(node);
if (canCrossUpperBoundary()) {
ElementShadow* shadow = shadowFor(node);
return shadow ? traverseLightChildren(shadow->shadowRoot(), direction)
: traverseLightChildren(node, direction);
}
if (isShadowHost(node))
return 0;
return traverseLightChildren(node, direction);
}
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.
if (ShadowRoot* shadowRoot = shadow->shadowRoot()) {
if (RuleSet* ruleSet = atHostRuleSetFor(shadowRoot))
matchedRules.append(ruleSet);
}
}
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.
if (ShadowRoot* shadowRoot = shadow->shadowRoot()) {
if (atHostRuleSetFor(shadowRoot))
return true;
}
return false;
}
