1 files changed, 115 insertions, 0 deletions
diff --git a/dom/html/HTMLLegendElement.cpp b/dom/html/HTMLLegendElement.cpp
new file mode 100644
index 0000000000..93b5200f96
--- /dev/null
+++ b/dom/html/HTMLLegendElement.cpp
@@ -0,0 +1,115 @@
+/* -*- 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/HTMLLegendElement.h"
+#include "mozilla/dom/ElementBinding.h"
+#include "mozilla/dom/HTMLLegendElementBinding.h"
+#include "nsFocusManager.h"
+#include "nsIFrame.h"
+
+NS_IMPL_NS_NEW_HTML_ELEMENT(Legend)
+
+namespace mozilla::dom {
+
+HTMLLegendElement::~HTMLLegendElement() = default;
+
+NS_IMPL_ELEMENT_CLONE(HTMLLegendElement)
+
+nsIContent* HTMLLegendElement::GetFieldSet() const {
+  nsIContent* parent = GetParent();
+
+  if (parent && parent->IsHTMLElement(nsGkAtoms::fieldset)) {
+    return parent;
+  }
+
+  return nullptr;
+}
+
+bool HTMLLegendElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
+                                       const nsAString& aValue,
+                                       nsIPrincipal* aMaybeScriptedPrincipal,
+                                       nsAttrValue& aResult) {
+  // this contains center, because IE4 does
+  static const nsAttrValue::EnumTable kAlignTable[] = {
+      {"left", LegendAlignValue::Left},
+      {"right", LegendAlignValue::Right},
+      {"center", LegendAlignValue::Center},
+      {nullptr, 0}};
+
+  if (aAttribute == nsGkAtoms::align && aNamespaceID == kNameSpaceID_None) {
+    return aResult.ParseEnumValue(aValue, kAlignTable, false);
+  }
+
+  return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
+                                              aMaybeScriptedPrincipal, aResult);
+}
+
+nsChangeHint HTMLLegendElement::GetAttributeChangeHint(const nsAtom* aAttribute,
+                                                       int32_t aModType) const {
+  nsChangeHint retval =
+      nsGenericHTMLElement::GetAttributeChangeHint(aAttribute, aModType);
+  if (aAttribute == nsGkAtoms::align) {
+    retval |= NS_STYLE_HINT_REFLOW;
+  }
+  return retval;
+}
+
+nsresult HTMLLegendElement::BindToTree(BindContext& aContext,
+                                       nsINode& aParent) {
+  return nsGenericHTMLElement::BindToTree(aContext, aParent);
+}
+
+void HTMLLegendElement::UnbindFromTree(bool aNullParent) {
+  nsGenericHTMLElement::UnbindFromTree(aNullParent);
+}
+
+void HTMLLegendElement::Focus(const FocusOptions& aOptions,
+                              const mozilla::dom::CallerType aCallerType,
+                              ErrorResult& aError) {
+  nsIFrame* frame = GetPrimaryFrame();
+  if (!frame) {
+    return;
+  }
+
+  if (frame->IsFocusable()) {
+    nsGenericHTMLElement::Focus(aOptions, aCallerType, aError);
+    return;
+  }
+
+  // If the legend isn't focusable, focus whatever is focusable following
+  // the legend instead, bug 81481.
+  nsFocusManager* fm = nsFocusManager::GetFocusManager();
+  if (!fm) {
+    return;
+  }
+
+  RefPtr<Element> result;
+  aError = fm->MoveFocus(
+      nullptr, this, nsIFocusManager::MOVEFOCUS_FORWARD,
+      nsIFocusManager::FLAG_NOPARENTFRAME |
+          nsFocusManager::FocusOptionsToFocusManagerFlags(aOptions),
+      getter_AddRefs(result));
+}
+
+bool HTMLLegendElement::PerformAccesskey(bool aKeyCausesActivation,
+                                         bool aIsTrustedEvent) {
+  FocusOptions options;
+  ErrorResult rv;
+
+  Focus(options, CallerType::System, rv);
+  return NS_SUCCEEDED(rv.StealNSResult());
+}
+
+already_AddRefed<HTMLFormElement> HTMLLegendElement::GetForm() {
+  return do_AddRef(GetFormElement());
+}
+
+JSObject* HTMLLegendElement::WrapNode(JSContext* aCx,
+                                      JS::Handle<JSObject*> aGivenProto) {
+  return HTMLLegendElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+}  // namespace mozilla::dom