LibWeb: Expose Node.ownerDocument

Required by jQuery.

Userland/Libraries/LibWeb/DOM/Node.cpp

@@ -539,4 +539,12 @@ bool Node::is_host_including_inclusive_ancestor_of(const Node& other) const
     return is_inclusive_ancestor_of(other) || (is<DocumentFragment>(other.root()) && downcast<DocumentFragment>(other.root())->host() && is_inclusive_ancestor_of(*downcast<DocumentFragment>(other.root())->host().ptr()));
 }
 
+// https://dom.spec.whatwg.org/#dom-node-ownerdocument
+RefPtr<Document> Node::owner_document() const
+{
+    if (is_document())
+        return nullptr;
+    return m_document;
+}
+
 }

Userland/Libraries/LibWeb/DOM/Node.h

@@ -99,6 +99,8 @@ public:
     Document& document() { return *m_document; }
     const Document& document() const { return *m_document; }
 
+    RefPtr<Document> owner_document() const;
+
     const HTML::HTMLAnchorElement* enclosing_link_element() const;
     const HTML::HTMLElement* enclosing_html_element() const;
     const HTML::HTMLElement* enclosing_html_element_with_attribute(const FlyString&) const;

Userland/Libraries/LibWeb/DOM/Node.idl

@@ -13,6 +13,7 @@ interface Node : EventTarget {
     readonly attribute Node? parentNode;
     readonly attribute Element? parentElement;
     readonly attribute boolean isConnected;
+    readonly attribute Document? ownerDocument;
     attribute DOMString textContent;
 
     Node appendChild(Node node);