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LibWeb: Add DOM::Node::parent_or_shadow_host_element()

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This will be used in style computation to inherit style across shadow
tree boundaries.
This commit is contained in:
Andreas Kling 2022-11-05 17:06:19 +01:00
parent 9c46fb7337
commit 87b0ddb354
2 changed files with 16 additions and 0 deletions
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13
Userland/Libraries/LibWeb/DOM/Node.cpp
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@ -872,6 +872,19 @@ ParentNode* Node::parent_or_shadow_host()
return verify_cast<ParentNode>(parent()); return verify_cast<ParentNode>(parent());
} }
Element* Node::parent_or_shadow_host_element()
{
if (is<ShadowRoot>(*this))
return static_cast<ShadowRoot&>(*this).host();
if (!parent())
return nullptr;
if (is<Element>(*parent()))
return static_cast<Element*>(parent());
if (is<ShadowRoot>(*parent()))
return static_cast<ShadowRoot&>(*parent()).host();
return nullptr;
}
JS::NonnullGCPtr<NodeList> Node::child_nodes() JS::NonnullGCPtr<NodeList> Node::child_nodes()
{ {
if (!m_child_nodes) { if (!m_child_nodes) {

3
Userland/Libraries/LibWeb/DOM/Node.h
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@ -45,6 +45,9 @@ public:
ParentNode* parent_or_shadow_host(); ParentNode* parent_or_shadow_host();
ParentNode const* parent_or_shadow_host() const { return const_cast<Node*>(this)->parent_or_shadow_host(); } ParentNode const* parent_or_shadow_host() const { return const_cast<Node*>(this)->parent_or_shadow_host(); }
Element* parent_or_shadow_host_element();
Element const* parent_or_shadow_host_element() const { return const_cast<Node*>(this)->parent_or_shadow_host_element(); }
virtual ~Node(); virtual ~Node();
// FIXME: Move cleanup to the regular destructor. // FIXME: Move cleanup to the regular destructor.