1 files changed, 58 insertions, 0 deletions
diff --git a/dom/html/HTMLHeadingElement.cpp b/dom/html/HTMLHeadingElement.cpp
new file mode 100644
index 0000000000..e3274d44b3
--- /dev/null
+++ b/dom/html/HTMLHeadingElement.cpp
@@ -0,0 +1,58 @@
+/* -*- 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/HTMLHeadingElement.h"
+#include "mozilla/dom/HTMLHeadingElementBinding.h"
+
+#include "mozilla/MappedDeclarationsBuilder.h"
+#include "nsGkAtoms.h"
+
+NS_IMPL_NS_NEW_HTML_ELEMENT(Heading)
+
+namespace mozilla::dom {
+
+HTMLHeadingElement::~HTMLHeadingElement() = default;
+
+NS_IMPL_ELEMENT_CLONE(HTMLHeadingElement)
+
+JSObject* HTMLHeadingElement::WrapNode(JSContext* aCx,
+                                       JS::Handle<JSObject*> aGivenProto) {
+  return HTMLHeadingElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+bool HTMLHeadingElement::ParseAttribute(int32_t aNamespaceID,
+                                        nsAtom* aAttribute,
+                                        const nsAString& aValue,
+                                        nsIPrincipal* aMaybeScriptedPrincipal,
+                                        nsAttrValue& aResult) {
+  if (aAttribute == nsGkAtoms::align && aNamespaceID == kNameSpaceID_None) {
+    return ParseDivAlignValue(aValue, aResult);
+  }
+
+  return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
+                                              aMaybeScriptedPrincipal, aResult);
+}
+
+void HTMLHeadingElement::MapAttributesIntoRule(
+    MappedDeclarationsBuilder& aBuilder) {
+  nsGenericHTMLElement::MapDivAlignAttributeInto(aBuilder);
+  nsGenericHTMLElement::MapCommonAttributesInto(aBuilder);
+}
+
+NS_IMETHODIMP_(bool)
+HTMLHeadingElement::IsAttributeMapped(const nsAtom* aAttribute) const {
+  static const MappedAttributeEntry* const map[] = {sDivAlignAttributeMap,
+                                                    sCommonAttributeMap};
+
+  return FindAttributeDependence(aAttribute, map);
+}
+
+nsMapRuleToAttributesFunc HTMLHeadingElement::GetAttributeMappingFunction()
+    const {
+  return &MapAttributesIntoRule;
+}
+
+}  // namespace mozilla::dom