LibWeb: Add Node.parentNode and Node.parentElement to DOM API :^)

Libraries/LibWeb/DOM/Node.cpp

@@ -179,4 +179,18 @@ bool Node::is_connected() const
     return root() && root()->is_document();
 }
 
+Element* Node::parent_element()
+{
+    if (!parent() || !is<Element>(parent()))
+        return nullptr;
+    return to<Element>(parent());
+}
+
+const Element* Node::parent_element() const
+{
+    if (!parent() || !is<Element>(parent()))
+        return nullptr;
+    return to<Element>(parent());
+}
+
 }

Libraries/LibWeb/DOM/Node.h

@@ -101,6 +101,12 @@ public:
     const Node* root() const;
     bool is_connected() const;
 
+    Node* parent_node() { return parent(); }
+    const Node* parent_node() const { return parent(); }
+
+    Element* parent_element();
+    const Element* parent_element() const;
+
     template<typename T>
     const T* first_child_of_type() const;
 

Libraries/LibWeb/DOM/Node.idl

@@ -5,6 +5,8 @@ interface Node : EventTarget {
     readonly attribute Node? lastChild;
     readonly attribute Node? previousSibling;
     readonly attribute Node? nextSibling;
+    readonly attribute Node? parentNode;
+    readonly attribute Element? parentElement;
 
 }