1 files changed, 103 insertions, 0 deletions
diff --git a/dom/html/HTMLOutputElement.h b/dom/html/HTMLOutputElement.h
new file mode 100644
index 0000000000..5fa4cfa5a4
--- /dev/null
+++ b/dom/html/HTMLOutputElement.h
@@ -0,0 +1,103 @@
+/* -*- 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/. */
+
+#ifndef mozilla_dom_HTMLOutputElement_h
+#define mozilla_dom_HTMLOutputElement_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/ConstraintValidation.h"
+#include "nsGenericHTMLElement.h"
+#include "nsStubMutationObserver.h"
+
+namespace mozilla::dom {
+
+class FormData;
+
+class HTMLOutputElement final : public nsGenericHTMLFormControlElement,
+                                public nsStubMutationObserver,
+                                public ConstraintValidation {
+ public:
+  using ConstraintValidation::GetValidationMessage;
+
+  explicit HTMLOutputElement(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
+      FromParser aFromParser = NOT_FROM_PARSER);
+
+  // nsISupports
+  NS_DECL_ISUPPORTS_INHERITED
+
+  // nsIFormControl
+  NS_IMETHOD Reset() override;
+  // The output element is not submittable.
+  NS_IMETHOD SubmitNamesValues(FormData* aFormData) override { return NS_OK; }
+
+  nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
+
+  virtual bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
+                              const nsAString& aValue,
+                              nsIPrincipal* aMaybeScriptedPrincipal,
+                              nsAttrValue& aResult) override;
+
+  virtual void DoneAddingChildren(bool aHaveNotified) override;
+
+  virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
+
+  // This function is called when a callback function from nsIMutationObserver
+  // has to be used to update the defaultValue attribute.
+  void DescendantsChanged();
+
+  // nsIMutationObserver
+  NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
+
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLOutputElement,
+                                           nsGenericHTMLFormControlElement)
+
+  virtual JSObject* WrapNode(JSContext* aCx,
+                             JS::Handle<JSObject*> aGivenProto) override;
+
+  // WebIDL
+  nsDOMTokenList* HtmlFor();
+
+  void GetName(nsAString& aName) { GetHTMLAttr(nsGkAtoms::name, aName); }
+
+  void SetName(const nsAString& aName, ErrorResult& aRv) {
+    SetHTMLAttr(nsGkAtoms::name, aName, aRv);
+  }
+
+  void GetType(nsAString& aType) { aType.AssignLiteral("output"); }
+
+  void GetDefaultValue(nsAString& aDefaultValue) {
+    aDefaultValue = mDefaultValue;
+  }
+
+  void SetDefaultValue(const nsAString& aDefaultValue, ErrorResult& aRv);
+
+  void GetValue(nsAString& aValue) const;
+  void SetValue(const nsAString& aValue, ErrorResult& aRv);
+
+  // nsIConstraintValidation::WillValidate is fine.
+  // nsIConstraintValidation::Validity() is fine.
+  // nsIConstraintValidation::GetValidationMessage() is fine.
+  // nsIConstraintValidation::CheckValidity() is fine.
+  void SetCustomValidity(const nsAString& aError);
+
+ protected:
+  virtual ~HTMLOutputElement();
+
+  enum ValueModeFlag { eModeDefault, eModeValue };
+
+  ValueModeFlag mValueModeFlag;
+  bool mIsDoneAddingChildren;
+  nsString mDefaultValue;
+  RefPtr<nsDOMTokenList> mTokenList;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_HTMLOutputElement_h