1 files changed, 95 insertions, 0 deletions
diff --git a/dom/html/HTMLTitleElement.cpp b/dom/html/HTMLTitleElement.cpp
new file mode 100644
index 0000000000..776c76f7e5
--- /dev/null
+++ b/dom/html/HTMLTitleElement.cpp
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/HTMLTitleElement.h"
+
+#include "mozilla/dom/HTMLTitleElementBinding.h"
+#include "mozilla/ErrorResult.h"
+#include "nsStyleConsts.h"
+#include "mozilla/dom/Document.h"
+#include "nsContentUtils.h"
+
+NS_IMPL_NS_NEW_HTML_ELEMENT(Title)
+
+namespace mozilla::dom {
+
+HTMLTitleElement::HTMLTitleElement(
+    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+    : nsGenericHTMLElement(std::move(aNodeInfo)) {
+  AddMutationObserver(this);
+}
+
+HTMLTitleElement::~HTMLTitleElement() = default;
+
+NS_IMPL_ISUPPORTS_INHERITED(HTMLTitleElement, nsGenericHTMLElement,
+                            nsIMutationObserver)
+
+NS_IMPL_ELEMENT_CLONE(HTMLTitleElement)
+
+JSObject* HTMLTitleElement::WrapNode(JSContext* cx,
+                                     JS::Handle<JSObject*> aGivenProto) {
+  return HTMLTitleElement_Binding::Wrap(cx, this, aGivenProto);
+}
+
+void HTMLTitleElement::GetText(DOMString& aText, ErrorResult& aError) const {
+  if (!nsContentUtils::GetNodeTextContent(this, false, aText, fallible)) {
+    aError = NS_ERROR_OUT_OF_MEMORY;
+  }
+}
+
+void HTMLTitleElement::SetText(const nsAString& aText, ErrorResult& aError) {
+  aError = nsContentUtils::SetNodeTextContent(this, aText, true);
+}
+
+void HTMLTitleElement::CharacterDataChanged(nsIContent* aContent,
+                                            const CharacterDataChangeInfo&) {
+  SendTitleChangeEvent(false);
+}
+
+void HTMLTitleElement::ContentAppended(nsIContent* aFirstNewContent) {
+  SendTitleChangeEvent(false);
+}
+
+void HTMLTitleElement::ContentInserted(nsIContent* aChild) {
+  SendTitleChangeEvent(false);
+}
+
+void HTMLTitleElement::ContentRemoved(nsIContent* aChild,
+                                      nsIContent* aPreviousSibling) {
+  SendTitleChangeEvent(false);
+}
+
+nsresult HTMLTitleElement::BindToTree(BindContext& aContext, nsINode& aParent) {
+  // Let this fall through.
+  nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  SendTitleChangeEvent(true);
+
+  return NS_OK;
+}
+
+void HTMLTitleElement::UnbindFromTree(bool aNullParent) {
+  SendTitleChangeEvent(false);
+
+  // Let this fall through.
+  nsGenericHTMLElement::UnbindFromTree(aNullParent);
+}
+
+void HTMLTitleElement::DoneAddingChildren(bool aHaveNotified) {
+  if (!aHaveNotified) {
+    SendTitleChangeEvent(false);
+  }
+}
+
+void HTMLTitleElement::SendTitleChangeEvent(bool aBound) {
+  Document* doc = GetUncomposedDoc();
+  if (doc) {
+    doc->NotifyPossibleTitleChange(aBound);
+  }
+}
+
+}  // namespace mozilla::dom