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LibWeb: Add shadow including ancestor/descendant checks
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2 changed files with 38 additions and 0 deletions
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@ -655,4 +655,37 @@ bool Node::contains(RefPtr<Node> other) const
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return other && other->is_inclusive_descendant_of(*this);
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}
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// https://dom.spec.whatwg.org/#concept-shadow-including-descendant
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bool Node::is_shadow_including_descendant_of(Node const& other) const
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{
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if (is_descendant_of(other))
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return true;
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if (!is<ShadowRoot>(root()))
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return false;
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auto shadow_root = verify_cast<ShadowRoot>(root());
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// NOTE: While host is nullable because of inheriting from DocumentFragment, shadow roots always have a host.
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return shadow_root->host()->is_shadow_including_inclusive_descendant_of(other);
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}
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// https://dom.spec.whatwg.org/#concept-shadow-including-inclusive-descendant
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bool Node::is_shadow_including_inclusive_descendant_of(Node const& other) const
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{
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return &other == this || is_shadow_including_descendant_of(other);
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}
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// https://dom.spec.whatwg.org/#concept-shadow-including-ancestor
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bool Node::is_shadow_including_ancestor_of(Node const& other) const
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{
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return other.is_shadow_including_descendant_of(*this);
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}
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// https://dom.spec.whatwg.org/#concept-shadow-including-inclusive-ancestor
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bool Node::is_shadow_including_inclusive_ancestor_of(Node const& other) const
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{
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return other.is_shadow_including_inclusive_descendant_of(*this);
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}
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}
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@ -174,6 +174,11 @@ public:
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// Used for dumping the DOM Tree
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void serialize_tree_as_json(JsonObjectSerializer<StringBuilder>&) const;
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bool is_shadow_including_descendant_of(Node const&) const;
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bool is_shadow_including_inclusive_descendant_of(Node const&) const;
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bool is_shadow_including_ancestor_of(Node const&) const;
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bool is_shadow_including_inclusive_ancestor_of(Node const&) const;
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protected:
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Node(Document&, NodeType);
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