LibWeb: Add a couple child node operations to Node and add node types

Author: https://github.com/Lubrsi
Commit: https://github.com/SerenityOS/serenity/commit/ed139bee7fa
Pull-request: https://github.com/SerenityOS/serenity/pull/5669

Userland/Libraries/LibWeb/DOM/Node.cpp

@@ -266,4 +266,15 @@ ParentNode* Node::parent_or_shadow_host()
     return downcast<ParentNode>(parent());
 }
 
+NonnullRefPtrVector<Node> Node::child_nodes() const
+{
+    NonnullRefPtrVector<Node> nodes;
+
+    for_each_child([&](auto& child) {
+        nodes.append(child);
+    });
+
+    return nodes;
+}
+
 }

Userland/Libraries/LibWeb/DOM/Node.h

@@ -37,14 +37,20 @@
 
 namespace Web::DOM {
 
-enum class NodeType : unsigned {
+enum class NodeType : u16 {
     INVALID = 0,
     ELEMENT_NODE = 1,
+    ATTRIBUTE_NODE = 2,
     TEXT_NODE = 3,
+    CDATA_SECTION_NODE = 4,
+    ENTITY_REFERENCE_NODE = 5,
+    ENTITY_NODE = 6,
+    PROCESSING_INSTRUCTION_NODE = 7,
     COMMENT_NODE = 8,
     DOCUMENT_NODE = 9,
     DOCUMENT_TYPE_NODE = 10,
     DOCUMENT_FRAGMENT_NODE = 11,
+    NOTATION_NODE = 12
 };
 
 class Node
@@ -81,12 +87,19 @@ public:
     bool is_parent_node() const { return is_element() || is_document() || is_document_fragment(); }
     bool is_slottable() const { return is_element() || is_text(); }
 
+    // NOTE: This is intended for the JS bindings.
+    u16 node_type() const { return (u16)m_type; }
+
     virtual bool is_editable() const;
 
     RefPtr<Node> append_child(NonnullRefPtr<Node>, bool notify = true);
     RefPtr<Node> insert_before(NonnullRefPtr<Node> node, RefPtr<Node> child, bool notify = true);
     RefPtr<Node> remove_child(NonnullRefPtr<Node>);
 
+    // NOTE: This is intended for the JS bindings.
+    bool has_child_nodes() const { return has_children(); }
+    NonnullRefPtrVector<Node> child_nodes() const;
+
     virtual RefPtr<Layout::Node> create_layout_node();
 
     virtual FlyString node_name() const = 0;

Userland/Libraries/LibWeb/DOM/Node.idl

@@ -1,6 +1,11 @@
 interface Node : EventTarget {
 
+    readonly attribute unsigned short nodeType;
     readonly attribute DOMString nodeName;
+
+    boolean hasChildNodes();
+    // FIXME: This should be a NodeList
+    readonly attribute ArrayFromVector childNodes;
     readonly attribute Node? firstChild;
     readonly attribute Node? lastChild;
     readonly attribute Node? previousSibling;
@@ -12,5 +17,18 @@ interface Node : EventTarget {
     Node appendChild(Node node);
     Node insertBefore(Node node, Node? child);
     Node removeChild(Node child);
-};
 
+    const unsigned short ELEMENT_NODE = 1;
+    const unsigned short ATTRIBUTE_NODE = 2;
+    const unsigned short TEXT_NODE = 3;
+    const unsigned short CDATA_SECTION_NODE = 4;
+    const unsigned short ENTITY_REFERENCE_NODE = 5;
+    const unsigned short ENTITY_NODE = 6;
+    const unsigned short PROCESSING_INSTRUCTION_NODE = 7;
+    const unsigned short COMMENT_NODE = 8;
+    const unsigned short DOCUMENT_NODE = 9;
+    const unsigned short DOCUMENT_TYPE_NODE = 10;
+    const unsigned short DOCUMENT_FRAGMENT_NODE = 11;
+    const unsigned short NOTATION_NODE = 12;
+
+};