/* -*- 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 "nsGenericHTMLElement.h"

#include "nsStubMutationObserver.h"

#include "nsIConstraintValidation.h"

namespace mozilla {

namespace dom {

class HTMLFormSubmission;

class HTMLOutputElement final : public nsGenericHTMLFormElement,

                                public nsStubMutationObserver,

                                public nsIConstraintValidation

{

public:

  using nsIConstraintValidation::GetValidationMessage;

  explicit HTMLOutputElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,

                             FromParser aFromParser = NOT_FROM_PARSER);

  // nsISupports

  NS_DECL_ISUPPORTS_INHERITED

  // nsIFormControl

  NS_IMETHOD Reset() override;

  NS_IMETHOD SubmitNamesValues(HTMLFormSubmission* aFormSubmission) override;

  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;

  EventStates IntrinsicState() const override;

  virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,

                               nsIContent* aBindingParent) 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,

                                           nsGenericHTMLFormElement)

  virtual JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;

  // WebIDL

  nsDOMTokenList* HtmlFor();

  // nsGenericHTMLFormElement::GetForm is fine.

  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);

  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 dom

} // namespace mozilla

#endif // mozilla_dom_HTMLOutputElement_h