From c6dd8a1f66651e30993c8dda8bd9b2bb9ea98b18 Mon Sep 17 00:00:00 2001
From: Adam Hodgen <ant1441@gmail.com>
Date: Fri, 18 Feb 2022 22:11:43 +0000
Subject: [PATCH] LibWeb: Implement `Node.nodeValue` DOM attribute

---
 Userland/Libraries/LibWeb/DOM/Node.cpp | 26 ++++++++++++++++++++++++++
 Userland/Libraries/LibWeb/DOM/Node.h   |  3 +++
 Userland/Libraries/LibWeb/DOM/Node.idl |  1 +
 3 files changed, 30 insertions(+)

diff --git a/Userland/Libraries/LibWeb/DOM/Node.cpp b/Userland/Libraries/LibWeb/DOM/Node.cpp
index d4c5ab7475..dff4980614 100644
--- a/Userland/Libraries/LibWeb/DOM/Node.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Node.cpp
@@ -145,6 +145,32 @@ void Node::set_text_content(String const& content)
     set_needs_style_update(true);
 }
 
+// https://dom.spec.whatwg.org/#dom-node-nodevalue
+String Node::node_value() const
+{
+    if (is<Attribute>(this)) {
+        return verify_cast<Attribute>(this)->value();
+    }
+    if (is<CharacterData>(this)) {
+        return verify_cast<CharacterData>(this)->data();
+    }
+
+    return {};
+}
+
+// https://dom.spec.whatwg.org/#ref-for-dom-node-nodevalue%E2%91%A0
+void Node::set_node_value(const String& value)
+{
+
+    if (is<Attribute>(this)) {
+        verify_cast<Attribute>(this)->set_value(value);
+    } else if (is<CharacterData>(this)) {
+        verify_cast<CharacterData>(this)->set_data(value);
+    }
+
+    // Otherwise: Do nothing.
+}
+
 void Node::invalidate_style()
 {
     for_each_in_inclusive_subtree_of_type<Element>([&](auto& element) {
diff --git a/Userland/Libraries/LibWeb/DOM/Node.h b/Userland/Libraries/LibWeb/DOM/Node.h
index d5076f228a..77ebef33f6 100644
--- a/Userland/Libraries/LibWeb/DOM/Node.h
+++ b/Userland/Libraries/LibWeb/DOM/Node.h
@@ -111,6 +111,9 @@ public:
     String text_content() const;
     void set_text_content(String const&);
 
+    String node_value() const;
+    void set_node_value(String const&);
+
     Document& document() { return *m_document; }
     const Document& document() const { return *m_document; }
 
diff --git a/Userland/Libraries/LibWeb/DOM/Node.idl b/Userland/Libraries/LibWeb/DOM/Node.idl
index a25bfb6d81..40705aa025 100644
--- a/Userland/Libraries/LibWeb/DOM/Node.idl
+++ b/Userland/Libraries/LibWeb/DOM/Node.idl
@@ -19,6 +19,7 @@ interface Node : EventTarget {
     readonly attribute Document? ownerDocument;
     Node getRootNode(optional GetRootNodeOptions options = {});
 
+    [CEReactions] attribute DOMString? nodeValue;
     // FIXME: [LegacyNullToEmptyString] is not allowed on nullable types as per the Web IDL spec.
     //        However, we only apply it to setters, so this works as a stop gap.
     //        Replace this with something like a special cased [LegacyNullToEmptyString].