dom/html/HTMLInputElement.h
author Masayuki Nakano <masayuki@d-toybox.com>
Tue, 20 Nov 2018 14:35:38 +0000
changeset 447458 09fd7845a50bad9fa7a579a9e7088828d8155a20
parent 447456 110224ca92565e84894ce093dea626a62f599057
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1504911 - part 4: Make all script for web content dispatch "input" event with proper event interface r=smaug Currently, some "input" event dispatchers in our script dispatch "input" event with UIEvent. This is completely wrong. For conforming to HTML spec, Event is proper event. Additionally, for conforming to Input Events, InputEvent is proper event only on <textarea> or <input> element which has a single line editor. For making us to maintain easier, this patch adds new API, "isInputEventTarget" to MozEditableElement which returns true when "input" event dispatcher should use InputEvent for the input element. Finally, this makes some dispatchers use setUserInput() instead of setting value and dispatching event by themselves. This also makes us to maintain them easier. Note that this does not touch "input" event dispatchers which dispatch events only for chrome (such as URL bar, some pages in about: scheme) for making this change safer as far as possible. Differential Revision: https://phabricator.services.mozilla.com/D12247

/* -*- 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_HTMLInputElement_h
#define mozilla_dom_HTMLInputElement_h

#include "mozilla/Attributes.h"
#include "nsGenericHTMLElement.h"
#include "nsImageLoadingContent.h"
#include "nsITextControlElement.h"
#include "nsITimer.h"
#include "nsCOMPtr.h"
#include "nsIConstraintValidation.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/HTMLFormElement.h" // for HasEverTriedInvalidSubmit()
#include "mozilla/dom/HTMLInputElementBinding.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/UnionTypes.h"
#include "nsIFilePicker.h"
#include "nsIContentPrefService2.h"
#include "mozilla/Decimal.h"
#include "nsContentUtils.h"
#include "nsTextEditorState.h"
#include "mozilla/Variant.h"
#include "SingleLineTextInputTypes.h"
#include "NumericInputTypes.h"
#include "CheckableInputTypes.h"
#include "ButtonInputTypes.h"
#include "DateTimeInputTypes.h"
#include "ColorInputType.h"
#include "FileInputType.h"
#include "HiddenInputType.h"

static constexpr size_t INPUT_TYPE_SIZE = sizeof(
  mozilla::Variant<TextInputType, SearchInputType, TelInputType, URLInputType,
                   EmailInputType, PasswordInputType, NumberInputType,
                   RangeInputType, RadioInputType, CheckboxInputType,
                   ButtonInputType, ImageInputType, ResetInputType,
                   SubmitInputType, DateInputType, TimeInputType, WeekInputType,
                   MonthInputType, DateTimeLocalInputType, FileInputType,
                   ColorInputType, HiddenInputType> );

class InputType;
struct DoNotDelete;
class nsIRadioGroupContainer;
class nsIRadioVisitor;

namespace mozilla {

class EventChainPostVisitor;
class EventChainPreVisitor;

namespace dom {

class AfterSetFilesOrDirectoriesRunnable;
class Date;
class DispatchChangeEventCallback;
class File;
class FileList;
class FileSystemEntry;
class GetFilesHelper;

/**
 * A class we use to create a singleton object that is used to keep track of
 * the last directory from which the user has picked files (via
 * <input type=file>) on a per-domain basis. The implementation uses
 * nsIContentPrefService2/NS_CONTENT_PREF_SERVICE_CONTRACTID to store the last
 * directory per-domain, and to ensure that whether the directories are
 * persistently saved (saved across sessions) or not honors whether or not the
 * page is being viewed in private browsing.
 */
class UploadLastDir final : public nsIObserver, public nsSupportsWeakReference
{
  ~UploadLastDir() {}

public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIOBSERVER

  /**
   * Fetch the last used directory for this location from the content
   * pref service, and display the file picker opened in that directory.
   *
   * @param aDoc          current document
   * @param aFilePicker   the file picker to open
   * @param aFpCallback   the callback object to be run when the file is shown.
   */
  nsresult FetchDirectoryAndDisplayPicker(nsIDocument* aDoc,
                                          nsIFilePicker* aFilePicker,
                                          nsIFilePickerShownCallback* aFpCallback);

  /**
   * Store the last used directory for this location using the
   * content pref service, if it is available
   * @param aURI URI of the current page
   * @param aDir Parent directory of the file(s)/directory chosen by the user
   */
  nsresult StoreLastUsedDirectory(nsIDocument* aDoc, nsIFile* aDir);

  class ContentPrefCallback final : public nsIContentPrefCallback2
  {
    virtual ~ContentPrefCallback()
    { }

  public:
    ContentPrefCallback(nsIFilePicker* aFilePicker, nsIFilePickerShownCallback* aFpCallback)
    : mFilePicker(aFilePicker)
    , mFpCallback(aFpCallback)
    { }

    NS_DECL_ISUPPORTS
    NS_DECL_NSICONTENTPREFCALLBACK2

    nsCOMPtr<nsIFilePicker> mFilePicker;
    nsCOMPtr<nsIFilePickerShownCallback> mFpCallback;
    nsCOMPtr<nsIContentPref> mResult;
  };
};

class HTMLInputElement final : public nsGenericHTMLFormElementWithState,
                               public nsImageLoadingContent,
                               public nsITextControlElement,
                               public nsIConstraintValidation
{
  friend class AfterSetFilesOrDirectoriesCallback;
  friend class DispatchChangeEventCallback;
  friend class ::InputType;

public:
  using nsIConstraintValidation::GetValidationMessage;
  using nsGenericHTMLFormElementWithState::GetForm;
  using nsGenericHTMLFormElementWithState::GetFormAction;

  enum class FromClone { no, yes };

  HTMLInputElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
                   mozilla::dom::FromParser aFromParser,
                   FromClone aFromClone = FromClone::no);

  NS_IMPL_FROMNODE_HTML_WITH_TAG(HTMLInputElement, input)

  // nsISupports
  NS_DECL_ISUPPORTS_INHERITED

  virtual int32_t TabIndexDefault() override;
  using nsGenericHTMLElement::Focus;
  virtual void Blur(ErrorResult& aError) override;
  virtual void Focus(ErrorResult& aError) override;

  // nsINode
#if !defined(ANDROID) && !defined(XP_MACOSX)
  virtual bool IsNodeApzAwareInternal() const override;
#endif

  // Element
  virtual bool IsInteractiveHTMLContent(bool aIgnoreTabindex) const override;

  // EventTarget
  virtual void AsyncEventRunning(AsyncEventDispatcher* aEvent) override;

  // Overriden nsIFormControl methods
  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  NS_IMETHOD Reset() override;
  NS_IMETHOD SubmitNamesValues(HTMLFormSubmission* aFormSubmission) override;
  NS_IMETHOD SaveState() override;
  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  virtual bool RestoreState(PresState* aState) override;
  virtual bool AllowDrop() override;
  virtual bool IsDisabledForEvents(WidgetEvent* aEvent) override;

  virtual void FieldSetDisabledChanged(bool aNotify) override;

  // nsIContent
  virtual bool IsHTMLFocusable(bool aWithMouse, bool *aIsFocusable, int32_t *aTabIndex) override;

  virtual bool ParseAttribute(int32_t aNamespaceID,
                                nsAtom* aAttribute,
                                const nsAString& aValue,
                                nsIPrincipal* aMaybeScriptedPrincipal,
                                nsAttrValue& aResult) override;
  virtual nsChangeHint GetAttributeChangeHint(const nsAtom* aAttribute,
                                              int32_t aModType) const override;
  NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* aAttribute) const override;
  virtual nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;

  void GetEventTargetParent(EventChainPreVisitor& aVisitor) override;
  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  virtual nsresult PreHandleEvent(EventChainVisitor& aVisitor) override;
  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  virtual nsresult PostHandleEvent(
                     EventChainPostVisitor& aVisitor) override;
  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  void PostHandleEventForRangeThumb(EventChainPostVisitor& aVisitor);
  MOZ_CAN_RUN_SCRIPT
  void StartRangeThumbDrag(WidgetGUIEvent* aEvent);
  MOZ_CAN_RUN_SCRIPT
  void FinishRangeThumbDrag(WidgetGUIEvent* aEvent = nullptr);
  MOZ_CAN_RUN_SCRIPT
  void CancelRangeThumbDrag(bool aIsForUserEvent = true);
  MOZ_CAN_RUN_SCRIPT
  void SetValueOfRangeForUserEvent(Decimal aValue);

  virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
                              nsIContent* aBindingParent) override;
  virtual void UnbindFromTree(bool aDeep = true,
                              bool aNullParent = true) override;

  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  virtual void DoneCreatingElement() override;

  virtual EventStates IntrinsicState() const override;

  // Element
private:
  virtual void AddStates(EventStates aStates) override;
  virtual void RemoveStates(EventStates aStates) override;

public:

  // nsITextControlElement
  NS_IMETHOD SetValueChanged(bool aValueChanged) override;
  NS_IMETHOD_(bool) IsSingleLineTextControl() const override;
  NS_IMETHOD_(bool) IsTextArea() const override;
  NS_IMETHOD_(bool) IsPasswordTextControl() const override;
  NS_IMETHOD_(int32_t) GetCols() override;
  NS_IMETHOD_(int32_t) GetWrapCols() override;
  NS_IMETHOD_(int32_t) GetRows() override;
  NS_IMETHOD_(void) GetDefaultValueFromContent(nsAString& aValue) override;
  NS_IMETHOD_(bool) ValueChanged() const override;
  NS_IMETHOD_(void) GetTextEditorValue(nsAString& aValue, bool aIgnoreWrap) const override;
  NS_IMETHOD_(mozilla::TextEditor*) GetTextEditor() override;
  NS_IMETHOD_(mozilla::TextEditor*) GetTextEditorWithoutCreation() override;
  NS_IMETHOD_(nsISelectionController*) GetSelectionController() override;
  NS_IMETHOD_(nsFrameSelection*) GetConstFrameSelection() override;
  NS_IMETHOD BindToFrame(nsTextControlFrame* aFrame) override;
  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  NS_IMETHOD_(void) UnbindFromFrame(nsTextControlFrame* aFrame) override;
  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  NS_IMETHOD CreateEditor() override;
  NS_IMETHOD_(void) UpdateOverlayTextVisibility(bool aNotify) override;
  NS_IMETHOD_(void) SetPreviewValue(const nsAString& aValue) override;
  NS_IMETHOD_(void) GetPreviewValue(nsAString& aValue) override;
  NS_IMETHOD_(void) EnablePreview() override;
  NS_IMETHOD_(bool) IsPreviewEnabled() override;
  NS_IMETHOD_(bool) GetPlaceholderVisibility() override;
  NS_IMETHOD_(bool) GetPreviewVisibility() override;
  NS_IMETHOD_(void) InitializeKeyboardEventListeners() override;
  NS_IMETHOD_(void) OnValueChanged(bool aNotify, bool aWasInteractiveUserChange) override;
  virtual void GetValueFromSetRangeText(nsAString& aValue) override;
  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  virtual nsresult SetValueFromSetRangeText(const nsAString& aValue) override;
  NS_IMETHOD_(bool) HasCachedSelection() override;

  // Methods for nsFormFillController so it can do selection operations on input
  // types the HTML spec doesn't support them on, like "email".
  uint32_t GetSelectionStartIgnoringType(ErrorResult& aRv);
  uint32_t GetSelectionEndIgnoringType(ErrorResult& aRv);

  void GetDisplayFileName(nsAString& aFileName) const;

  const nsTArray<OwningFileOrDirectory>& GetFilesOrDirectoriesInternal() const;

  void SetFilesOrDirectories(const nsTArray<OwningFileOrDirectory>& aFilesOrDirectories,
                             bool aSetValueChanged);
  void SetFiles(FileList* aFiles, bool aSetValueChanged);

  // This method is used for test only. Onces the data is set, a 'change' event
  // is dispatched.
  void MozSetDndFilesAndDirectories(const nsTArray<OwningFileOrDirectory>& aSequence);

  // Called when a nsIFilePicker or a nsIColorPicker terminate.
  void PickerClosed();

  void SetCheckedChangedInternal(bool aCheckedChanged);
  bool GetCheckedChanged() const {
    return mCheckedChanged;
  }
  void AddedToRadioGroup();
  void WillRemoveFromRadioGroup();

 /**
   * Helper function returning the currently selected button in the radio group.
   * Returning null if the element is not a button or if there is no selectied
   * button in the group.
   *
   * @return the selected button (or null).
   */
  HTMLInputElement* GetSelectedRadioButton() const;

  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLInputElement,
                                           nsGenericHTMLFormElementWithState)

  static UploadLastDir* gUploadLastDir;
  // create and destroy the static UploadLastDir object for remembering
  // which directory was last used on a site-by-site basis
  static void InitUploadLastDir();
  static void DestroyUploadLastDir();

  //If the valueAsDate attribute should be enabled in webIDL
  static bool ValueAsDateEnabled(JSContext* cx, JSObject* obj);

  void MaybeLoadImage();

  void SetSelectionCached()
  {
    MOZ_ASSERT(mType == NS_FORM_INPUT_NUMBER);
    mSelectionCached = true;
  }
  bool IsSelectionCached() const
  {
    MOZ_ASSERT(mType == NS_FORM_INPUT_NUMBER);
    return mSelectionCached;
  }
  void ClearSelectionCached()
  {
    MOZ_ASSERT(mType == NS_FORM_INPUT_NUMBER);
    mSelectionCached = false;
  }
  nsTextEditorState::SelectionProperties& GetSelectionProperties()
  {
    MOZ_ASSERT(mType == NS_FORM_INPUT_NUMBER);
    return mSelectionProperties;
  }

  bool HasPatternAttribute() const
  {
    return mHasPatternAttribute;
  }

  // nsIConstraintValidation
  bool     IsTooLong();
  bool     IsTooShort();
  bool     IsValueMissing() const;
  bool     HasTypeMismatch() const;
  bool     HasPatternMismatch() const;
  bool     IsRangeOverflow() const;
  bool     IsRangeUnderflow() const;
  bool     HasStepMismatch(bool aUseZeroIfValueNaN = false) const;
  bool     HasBadInput() const;
  void     UpdateTooLongValidityState();
  void     UpdateTooShortValidityState();
  void     UpdateValueMissingValidityState();
  void     UpdateTypeMismatchValidityState();
  void     UpdatePatternMismatchValidityState();
  void     UpdateRangeOverflowValidityState();
  void     UpdateRangeUnderflowValidityState();
  void     UpdateStepMismatchValidityState();
  void     UpdateBadInputValidityState();
  // Update all our validity states and then update our element state
  // as needed.  aNotify controls whether the element state update
  // needs to notify.
  void     UpdateAllValidityStates(bool aNotify);
  // Update all our validity states without updating element state.
  // This should be called instead of UpdateAllValidityStates any time
  // we're guaranteed that element state will be updated anyway.
  void     UpdateAllValidityStatesButNotElementState();
  void     UpdateBarredFromConstraintValidation();
  nsresult GetValidationMessage(nsAString& aValidationMessage,
                                ValidityStateType aType) override;

  // Override SetCustomValidity so we update our state properly when it's called
  // via bindings.
  void SetCustomValidity(const nsAString& aError);

  /**
   * Update the value missing validity state for radio elements when they have
   * a group.
   *
   * @param aIgnoreSelf Whether the required attribute and the checked state
   * of the current radio should be ignored.
   * @note This method shouldn't be called if the radio element hasn't a group.
   */
  void     UpdateValueMissingValidityStateForRadio(bool aIgnoreSelf);

  /**
   * Set filters to the filePicker according to the accept attribute value.
   *
   * See:
   * http://dev.w3.org/html5/spec/forms.html#attr-input-accept
   *
   * @note You should not call this function if the element has no @accept.
   * @note "All Files" filter is always set, no matter if there is a valid
   * filter specified or not.
   * @note If more than one valid filter is found, the "All Supported Types"
   * filter is added, which is the concatenation of all valid filters.
   * @note Duplicate filters and similar filters (i.e. filters whose file
   * extensions already exist in another filter) are ignored.
   * @note "All Files" filter will be selected by default if unknown mime types
   * have been specified and no file extension filter has been specified.
   * Otherwise, specified filter or "All Supported Types" filter will be
   * selected by default.
   * The logic behind is that having unknown mime type means we might restrict
   * user's input too much, as some filters will be missing.
   * However, if author has also specified some file extension filters, it's
   * likely those are fallback for the unusual mime type we haven't been able
   * to resolve; so it's better to select author specified filters in that case.
   */
  void SetFilePickerFiltersFromAccept(nsIFilePicker* filePicker);

  /**
   * The form might need to request an update of the UI bits
   * (BF_CAN_SHOW_INVALID_UI and BF_CAN_SHOW_VALID_UI) when an invalid form
   * submission is tried.
   *
   * @param aIsFocused Whether the element is currently focused.
   *
   * @note The caller is responsible to call ContentStatesChanged.
   */
  void UpdateValidityUIBits(bool aIsFocused);

  /**
   * Fires change event if mFocusedValue and current value held are unequal.
   */
  void FireChangeEventIfNeeded();

  /**
   * Returns the input element's value as a Decimal.
   * Returns NaN if the current element's value is not a floating point number.
   *
   * @return the input element's value as a Decimal.
   */
  Decimal GetValueAsDecimal() const;

  /**
   * Returns the input's "minimum" (as defined by the HTML5 spec) as a double.
   * Note this takes account of any default minimum that the type may have.
   * Returns NaN if the min attribute isn't a valid floating point number and
   * the input's type does not have a default minimum.
   *
   * NOTE: Only call this if you know DoesMinMaxApply() returns true.
   */
  Decimal GetMinimum() const;

  /**
   * Returns the input's "maximum" (as defined by the HTML5 spec) as a double.
   * Note this takes account of any default maximum that the type may have.
   * Returns NaN if the max attribute isn't a valid floating point number and
   * the input's type does not have a default maximum.
   *
   * NOTE:Only call this if you know DoesMinMaxApply() returns true.
   */
  Decimal GetMaximum() const;

  // WebIDL

  void GetAccept(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::accept, aValue);
  }
  void SetAccept(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::accept, aValue, aRv);
  }

  void GetAlt(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::alt, aValue);
  }
  void SetAlt(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::alt, aValue, aRv);
  }

  void GetAutocomplete(nsAString& aValue);
  void SetAutocomplete(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::autocomplete, aValue, aRv);
  }

  void GetAutocompleteInfo(Nullable<AutocompleteInfo>& aInfo);

  bool Autofocus() const
  {
    return GetBoolAttr(nsGkAtoms::autofocus);
  }

  void SetAutofocus(bool aValue, ErrorResult& aRv)
  {
    SetHTMLBoolAttr(nsGkAtoms::autofocus, aValue, aRv);
  }

  bool DefaultChecked() const
  {
    return HasAttr(kNameSpaceID_None, nsGkAtoms::checked);
  }

  void SetDefaultChecked(bool aValue, ErrorResult& aRv)
  {
    SetHTMLBoolAttr(nsGkAtoms::checked, aValue, aRv);
  }

  bool Checked() const
  {
    return mChecked;
  }
  void SetChecked(bool aChecked);

  bool Disabled() const
  {
    return GetBoolAttr(nsGkAtoms::disabled);
  }

  void SetDisabled(bool aValue, ErrorResult& aRv)
  {
    SetHTMLBoolAttr(nsGkAtoms::disabled, aValue, aRv);
  }

  FileList* GetFiles();
  void SetFiles(FileList* aFiles);

  void SetFormAction(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::formaction, aValue, aRv);
  }

  void GetFormEnctype(nsAString& aValue);
  void SetFormEnctype(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::formenctype, aValue, aRv);
  }

  void GetFormMethod(nsAString& aValue);
  void SetFormMethod(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::formmethod, aValue, aRv);
  }

  bool FormNoValidate() const
  {
    return GetBoolAttr(nsGkAtoms::formnovalidate);
  }

  void SetFormNoValidate(bool aValue, ErrorResult& aRv)
  {
    SetHTMLBoolAttr(nsGkAtoms::formnovalidate, aValue, aRv);
  }

  void GetFormTarget(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::formtarget, aValue);
  }
  void SetFormTarget(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::formtarget, aValue, aRv);
  }

  MOZ_CAN_RUN_SCRIPT uint32_t Height();

  void SetHeight(uint32_t aValue, ErrorResult& aRv)
  {
    SetUnsignedIntAttr(nsGkAtoms::height, aValue, 0, aRv);
  }

  bool Indeterminate() const
  {
    return mIndeterminate;
  }

  bool IsDraggingRange() const
  {
    return mIsDraggingRange;
  }
  void SetIndeterminate(bool aValue);

  void GetInputMode(nsAString& aValue);
  void SetInputMode(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::inputmode, aValue, aRv);
  }

  nsGenericHTMLElement* GetList() const;

  void GetMax(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::max, aValue);
  }
  void SetMax(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::max, aValue, aRv);
  }

  int32_t MaxLength() const
  {
    return GetIntAttr(nsGkAtoms::maxlength, -1);
  }

  void SetMaxLength(int32_t aValue, ErrorResult& aRv)
  {
    int32_t minLength = MinLength();
    if (aValue < 0 || (minLength >= 0 && aValue < minLength)) {
      aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
      return;
    }

    SetHTMLIntAttr(nsGkAtoms::maxlength, aValue, aRv);
  }

  int32_t MinLength() const
  {
    return GetIntAttr(nsGkAtoms::minlength, -1);
  }

  void SetMinLength(int32_t aValue, ErrorResult& aRv)
  {
    int32_t maxLength = MaxLength();
    if (aValue < 0 || (maxLength >= 0 && aValue > maxLength)) {
      aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
      return;
    }

    SetHTMLIntAttr(nsGkAtoms::minlength, aValue, aRv);
  }

  void GetMin(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::min, aValue);
  }
  void SetMin(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::min, aValue, aRv);
  }

  bool Multiple() const
  {
    return GetBoolAttr(nsGkAtoms::multiple);
  }

  void SetMultiple(bool aValue, ErrorResult& aRv)
  {
    SetHTMLBoolAttr(nsGkAtoms::multiple, aValue, aRv);
  }

  void GetName(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::name, aValue);
  }
  void SetName(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::name, aValue, aRv);
  }

  void GetPattern(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::pattern, aValue);
  }
  void SetPattern(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::pattern, aValue, aRv);
  }

  void GetPlaceholder(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::placeholder, aValue);
  }
  void SetPlaceholder(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::placeholder, aValue, aRv);
  }

  bool ReadOnly() const
  {
    return GetBoolAttr(nsGkAtoms::readonly);
  }

  void SetReadOnly(bool aValue, ErrorResult& aRv)
  {
    SetHTMLBoolAttr(nsGkAtoms::readonly, aValue, aRv);
  }

  bool Required() const
  {
    return GetBoolAttr(nsGkAtoms::required);
  }

  void SetRequired(bool aValue, ErrorResult& aRv)
  {
    SetHTMLBoolAttr(nsGkAtoms::required, aValue, aRv);
  }

  uint32_t Size() const
  {
    return GetUnsignedIntAttr(nsGkAtoms::size, DEFAULT_COLS);
  }

  void SetSize(uint32_t aValue, ErrorResult& aRv)
  {
    if (aValue == 0) {
      aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
      return;
    }

    SetUnsignedIntAttr(nsGkAtoms::size, aValue, DEFAULT_COLS, aRv);
  }

  void GetSrc(nsAString& aValue)
  {
    GetURIAttr(nsGkAtoms::src, nullptr, aValue);
  }
  void SetSrc(const nsAString& aValue, nsIPrincipal* aTriggeringPrincipal, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::src, aValue, aTriggeringPrincipal, aRv);
  }

  void GetStep(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::step, aValue);
  }
  void SetStep(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::step, aValue, aRv);
  }

  void GetType(nsAString& aValue);
  void SetType(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::type, aValue, aRv);
  }

  void GetDefaultValue(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::value, aValue);
  }
  void SetDefaultValue(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::value, aValue, aRv);
  }

  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  void SetValue(const nsAString& aValue, CallerType aCallerType,
                ErrorResult& aRv);
  void GetValue(nsAString& aValue, CallerType aCallerType);

  Nullable<Date> GetValueAsDate(ErrorResult& aRv);

  void SetValueAsDate(const Nullable<Date>& aDate, ErrorResult& aRv);

  double ValueAsNumber() const
  {
    return DoesValueAsNumberApply() ? GetValueAsDecimal().toDouble()
                                    : UnspecifiedNaN<double>();
  }

  void SetValueAsNumber(double aValue, ErrorResult& aRv);

  MOZ_CAN_RUN_SCRIPT uint32_t Width();

  void SetWidth(uint32_t aValue, ErrorResult& aRv)
  {
    SetUnsignedIntAttr(nsGkAtoms::width, aValue, 0, aRv);
  }

  void StepUp(int32_t aN, ErrorResult& aRv)
  {
    aRv = ApplyStep(aN);
  }

  void StepDown(int32_t aN, ErrorResult& aRv)
  {
    aRv = ApplyStep(-aN);
  }

  /**
   * Returns the current step value.
   * Returns kStepAny if the current step is "any" string.
   *
   * @return the current step value.
   */
  Decimal GetStep() const;

  already_AddRefed<nsINodeList> GetLabels();

  void Select();

  Nullable<uint32_t> GetSelectionStart(ErrorResult& aRv);
  void SetSelectionStart(const Nullable<uint32_t>& aValue, ErrorResult& aRv);

  Nullable<uint32_t> GetSelectionEnd(ErrorResult& aRv);
  void SetSelectionEnd(const Nullable<uint32_t>& aValue, ErrorResult& aRv);

  void GetSelectionDirection(nsAString& aValue, ErrorResult& aRv);
  void SetSelectionDirection(const nsAString& aValue, ErrorResult& aRv);

  void SetSelectionRange(uint32_t aStart, uint32_t aEnd,
                         const Optional< nsAString >& direction,
                         ErrorResult& aRv);

  void SetRangeText(const nsAString& aReplacement, ErrorResult& aRv);

  void SetRangeText(const nsAString& aReplacement, uint32_t aStart,
                    uint32_t aEnd, SelectionMode aSelectMode,
                    ErrorResult& aRv);

  bool Allowdirs() const
  {
    return HasAttr(kNameSpaceID_None, nsGkAtoms::allowdirs);
  }

  void SetAllowdirs(bool aValue, ErrorResult& aRv)
  {
    SetHTMLBoolAttr(nsGkAtoms::allowdirs, aValue, aRv);
  }

  bool WebkitDirectoryAttr() const
  {
    return HasAttr(kNameSpaceID_None, nsGkAtoms::webkitdirectory);
  }

  void SetWebkitDirectoryAttr(bool aValue, ErrorResult& aRv)
  {
    SetHTMLBoolAttr(nsGkAtoms::webkitdirectory, aValue, aRv);
  }

  void GetWebkitEntries(nsTArray<RefPtr<FileSystemEntry>>& aSequence);

  bool IsFilesAndDirectoriesSupported() const;

  already_AddRefed<Promise> GetFilesAndDirectories(ErrorResult& aRv);

  already_AddRefed<Promise> GetFiles(bool aRecursiveFlag, ErrorResult& aRv);

  void ChooseDirectory(ErrorResult& aRv);

  void GetAlign(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::align, aValue);
  }
  void SetAlign(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::align, aValue, aRv);
  }

  void GetUseMap(nsAString& aValue)
  {
    GetHTMLAttr(nsGkAtoms::usemap, aValue);
  }
  void SetUseMap(const nsAString& aValue, ErrorResult& aRv)
  {
    SetHTMLAttr(nsGkAtoms::usemap, aValue, aRv);
  }

  nsIControllers* GetControllers(ErrorResult& aRv);
  // XPCOM adapter function widely used throughout code, leaving it as is.
  nsresult GetControllers(nsIControllers** aResult);

  int32_t InputTextLength(CallerType aCallerType);

  void MozGetFileNameArray(nsTArray<nsString>& aFileNames, ErrorResult& aRv);

  void MozSetFileNameArray(const Sequence< nsString >& aFileNames, ErrorResult& aRv);
  void MozSetFileArray(const Sequence<OwningNonNull<File>>& aFiles);
  void MozSetDirectory(const nsAString& aDirectoryPath, ErrorResult& aRv);

  /*
   * The following functions are called from datetime picker to let input box
   * know the current state of the picker or to update the input box on changes.
   */
  void GetDateTimeInputBoxValue(DateTimeValue& aValue);

  /*
   * This allows chrome JavaScript to dispatch event to the inner datetimebox
   * anonymous element or access nsIDateTimeInputArea implmentation.
   */
  Element* GetDateTimeBoxElement();

  /*
   * The following functions are called from datetime input box XBL to control
   * and update the picker.
   */
  void OpenDateTimePicker(const DateTimeValue& aInitialValue);
  void UpdateDateTimePicker(const DateTimeValue& aValue);
  void CloseDateTimePicker();

  /*
   * Called from datetime input box binding when inner text fields are focused
   * or blurred.
   */
  void SetFocusState(bool aIsFocused);

  /*
   * Called from datetime input box binding when the the user entered value
   * becomes valid/invalid.
   */
  void UpdateValidityState();

  /*
   * The following are called from datetime input box binding to get the
   * corresponding computed values.
   */
  double GetStepAsDouble() { return GetStep().toDouble(); }
  double GetStepBaseAsDouble() { return GetStepBase().toDouble(); }
  double GetMinimumAsDouble() { return GetMinimum().toDouble(); }
  double GetMaximumAsDouble() { return GetMaximum().toDouble(); }

  HTMLInputElement* GetOwnerNumberControl();

  void StartNumberControlSpinnerSpin();
  enum SpinnerStopState {
    eAllowDispatchingEvents,
    eDisallowDispatchingEvents
  };
  void StopNumberControlSpinnerSpin(SpinnerStopState aState =
                                      eAllowDispatchingEvents);
  MOZ_CAN_RUN_SCRIPT
  void StepNumberControlForUserEvent(int32_t aDirection);

  /**
   * The callback function used by the nsRepeatService that we use to spin the
   * spinner for <input type=number>.
   */
  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  static void HandleNumberControlSpin(void* aData);

  bool NumberSpinnerUpButtonIsDepressed() const
  {
    return mNumberControlSpinnerIsSpinning && mNumberControlSpinnerSpinsUp;
  }

  bool NumberSpinnerDownButtonIsDepressed() const
  {
    return mNumberControlSpinnerIsSpinning && !mNumberControlSpinnerSpinsUp;
  }

  bool MozIsTextField(bool aExcludePassword);

  /**
   * GetEditor() is for webidl bindings.
   */
  nsIEditor* GetEditor();

  bool IsInputEventTarget() const
  {
    return IsSingleLineTextControl(false);
  }

  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  void SetUserInput(const nsAString& aInput,
                    nsIPrincipal& aSubjectPrincipal);

  /**
   * If aValue contains a valid floating-point number in the format specified
   * by the HTML 5 spec:
   *
   *   http://www.whatwg.org/specs/web-apps/current-work/multipage/common-microsyntaxes.html#floating-point-numbers
   *
   * then this function will return the number parsed as a Decimal, otherwise
   * it will return a Decimal for which Decimal::isFinite() will return false.
   */
  static Decimal StringToDecimal(const nsAString& aValue);

  void UpdateEntries(const nsTArray<OwningFileOrDirectory>& aFilesOrDirectories);

  static void Shutdown();

  /**
   * Returns if the required attribute applies for the current type.
   */
  bool DoesRequiredApply() const;

  /**
   * Returns the current required state of the element. This function differs
   * from Required() in that this function only returns true for input types
   * that @required attribute applies and the attribute is set; in contrast,
   * Required() returns true whenever @required attribute is set.
   */
  bool IsRequired() const
  {
    return State().HasState(NS_EVENT_STATE_REQUIRED);
  }

protected:
  virtual ~HTMLInputElement();

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

  // Pull IsSingleLineTextControl into our scope, otherwise it'd be hidden
  // by the nsITextControlElement version.
  using nsGenericHTMLFormElementWithState::IsSingleLineTextControl;

  /**
   * The ValueModeType specifies how the value IDL attribute should behave.
   *
   * See: http://dev.w3.org/html5/spec/forms.html#dom-input-value
   */
  enum ValueModeType
  {
    // On getting, returns the value.
    // On setting, sets value.
    VALUE_MODE_VALUE,
    // On getting, returns the value if present or the empty string.
    // On setting, sets the value.
    VALUE_MODE_DEFAULT,
    // On getting, returns the value if present or "on".
    // On setting, sets the value.
    VALUE_MODE_DEFAULT_ON,
    // On getting, returns "C:\fakepath\" followed by the file name of the
    // first file of the selected files if any.
    // On setting the empty string, empties the selected files list, otherwise
    // throw the INVALID_STATE_ERR exception.
    VALUE_MODE_FILENAME
  };

  /**
   * This helper method convert a sub-string that contains only digits to a
   * number (unsigned int given that it can't contain a minus sign).
   * This method will return whether the sub-string is correctly formatted
   * (ie. contains only digit) and it can be successfuly parsed to generate a
   * number).
   * If the method returns true, |aResult| will contained the parsed number.
   *
   * @param aValue  the string on which the sub-string will be extracted and parsed.
   * @param aStart  the beginning of the sub-string in aValue.
   * @param aLen    the length of the sub-string.
   * @param aResult the parsed number.
   * @return whether the sub-string has been parsed successfully.
   */
  static bool DigitSubStringToNumber(const nsAString& aValue, uint32_t aStart,
                                     uint32_t aLen, uint32_t* aResult);

  // Helper method

  /**
   * Setting the value.
   *
   * @param aValue      String to set.
   * @param aOldValue   Previous value before setting aValue.
                        If previous value is unknown, aOldValue can be nullptr.
   * @param aFlags      See nsTextEditorState::SetValueFlags.
   */
  MOZ_CAN_RUN_SCRIPT
  nsresult SetValueInternal(const nsAString& aValue,
                            const nsAString* aOldValue,
                            uint32_t aFlags);

  MOZ_CAN_RUN_SCRIPT
  nsresult SetValueInternal(const nsAString& aValue,
                            uint32_t aFlags)
  {
    return SetValueInternal(aValue, nullptr, aFlags);
  }

  // Generic getter for the value that doesn't do experimental control type
  // sanitization.
  void GetValueInternal(nsAString& aValue, CallerType aCallerType) const;

  // A getter for callers that know we're not dealing with a file input, so they
  // don't have to think about the caller type.
  void GetNonFileValueInternal(nsAString& aValue) const;

  /**
   * Returns whether the current value is the empty string.  This only makes
   * sense for some input types; does NOT make sense for file inputs.
   *
   * @return whether the current value is the empty string.
   */
  bool IsValueEmpty() const;

  /**
   * Returns whether the current placeholder value should be shown.
   */
  bool ShouldShowPlaceholder() const;

  void ClearFiles(bool aSetValueChanged);

  void SetIndeterminateInternal(bool aValue,
                                bool aShouldInvalidate);

  /**
   * Called when an attribute is about to be changed
   */
  virtual nsresult BeforeSetAttr(int32_t aNameSpaceID, nsAtom* aName,
                                 const nsAttrValueOrString* aValue,
                                 bool aNotify) override;
  /**
   * Called when an attribute has just been changed
   */
  MOZ_CAN_RUN_SCRIPT_BOUNDARY
  virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
                                const nsAttrValue* aValue,
                                const nsAttrValue* aOldValue,
                                nsIPrincipal* aSubjectPrincipal,
                                bool aNotify) override;

  virtual void BeforeSetForm(bool aBindToTree) override;

  virtual void AfterClearForm(bool aUnbindOrDelete) override;

  /**
   * Dispatch a select event. Returns true if the event was not cancelled.
   */
  bool DispatchSelectEvent(nsPresContext* aPresContext);

  void SelectAll(nsPresContext* aPresContext);
  bool IsImage() const
  {
    return AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
                       nsGkAtoms::image, eIgnoreCase);
  }

  /**
   * Visit the group of radio buttons this radio belongs to
   * @param aVisitor the visitor to visit with
   */
  nsresult VisitGroup(nsIRadioVisitor* aVisitor, bool aFlushContent);

  /**
   * Do all the work that |SetChecked| does (radio button handling, etc.), but
   * take an |aNotify| parameter.
   */
  void DoSetChecked(bool aValue, bool aNotify, bool aSetValueChanged);

  /**
   * Do all the work that |SetCheckedChanged| does (radio button handling,
   * etc.), but take an |aNotify| parameter that lets it avoid flushing content
   * when it can.
   */
  void DoSetCheckedChanged(bool aCheckedChanged, bool aNotify);

  /**
   * Actually set checked and notify the frame of the change.
   * @param aValue the value of checked to set
   */
  void SetCheckedInternal(bool aValue, bool aNotify);

  void RadioSetChecked(bool aNotify);
  void SetCheckedChanged(bool aCheckedChanged);

  /**
   * MaybeSubmitForm looks for a submit input or a single text control
   * and submits the form if either is present.
   */
  nsresult MaybeSubmitForm(nsPresContext* aPresContext);

  /**
   * Update mFileList with the currently selected file.
   */
  void UpdateFileList();

  /**
   * Called after calling one of the SetFilesOrDirectories() functions.
   * This method can explore the directory recursively if needed.
   */
  void AfterSetFilesOrDirectories(bool aSetValueChanged);

  /**
   * Recursively explore the directory and populate mFileOrDirectories correctly
   * for webkitdirectory.
   */
  void ExploreDirectoryRecursively(bool aSetValuechanged);

  /**
   * Determine whether the editor needs to be initialized explicitly for
   * a particular event.
   */
  bool NeedToInitializeEditorForEvent(EventChainPreVisitor& aVisitor) const;

  /**
   * Get the value mode of the element, depending of the type.
   */
  ValueModeType GetValueMode() const;

  /**
   * Get the mutable state of the element.
   * When the element isn't mutable (immutable), the value or checkedness
   * should not be changed by the user.
   *
   * See: http://dev.w3.org/html5/spec/forms.html#concept-input-mutable
   */
  bool IsMutable() const;

  /**
   * Returns if the min and max attributes apply for the current type.
   */
  bool DoesMinMaxApply() const;

  /**
   * Returns if the step attribute apply for the current type.
   */
  bool DoesStepApply() const { return DoesMinMaxApply(); }

  /**
   * Returns if stepDown and stepUp methods apply for the current type.
   */
  bool DoStepDownStepUpApply() const { return DoesStepApply(); }

  /**
   * Returns if valueAsNumber attribute applies for the current type.
   */
  bool DoesValueAsNumberApply() const { return DoesMinMaxApply(); }

  /**
   * Returns if autocomplete attribute applies for the current type.
   */
  bool DoesAutocompleteApply() const;

  void FreeData();
  nsTextEditorState *GetEditorState() const;

  mozilla::TextEditor* GetTextEditorFromState();

  /**
   * Manages the internal data storage across type changes.
   */
  MOZ_CAN_RUN_SCRIPT
  void HandleTypeChange(uint8_t aNewType, bool aNotify);

  /**
   * Sanitize the value of the element depending of its current type.
   * See: http://www.whatwg.org/specs/web-apps/current-work/#value-sanitization-algorithm
   */
  void SanitizeValue(nsAString& aValue);

  /**
   * Returns whether the placeholder attribute applies for the current type.
   */
  bool PlaceholderApplies() const;

  /**
   * Set the current default value to the value of the input element.
   * @note You should not call this method if GetValueMode() doesn't return
   * VALUE_MODE_VALUE.
   */
  MOZ_CAN_RUN_SCRIPT
  nsresult SetDefaultValueAsValue();

  void SetDirectionFromValue(bool aNotify);

  /**
   * Return if an element should have a specific validity UI
   * (with :-moz-ui-invalid and :-moz-ui-valid pseudo-classes).
   *
   * @return Whether the element should have a validity UI.
   */
  bool ShouldShowValidityUI() const {
    /**
     * Always show the validity UI if the form has already tried to be submitted
     * but was invalid.
     *
     * Otherwise, show the validity UI if the element's value has been changed.
     */
    if (mForm && mForm->HasEverTriedInvalidSubmit()) {
      return true;
    }

    switch (GetValueMode()) {
      case VALUE_MODE_DEFAULT:
        return true;
      case VALUE_MODE_DEFAULT_ON:
        return GetCheckedChanged();
      case VALUE_MODE_VALUE:
      case VALUE_MODE_FILENAME:
        return mValueChanged;
    }

    MOZ_ASSERT_UNREACHABLE("We should not be there: there are no other modes.");
    return false;
  }

  /**
   * Returns the radio group container if the element has one, null otherwise.
   * The radio group container will be the form owner if there is one.
   * The current document otherwise.
   * @return the radio group container if the element has one, null otherwise.
   */
  nsIRadioGroupContainer* GetRadioGroupContainer() const;

  /**
   * Parse a color string of the form #XXXXXX where X should be hexa characters
   * @param the string to be parsed.
   * @return whether the string is a valid simple color.
   * Note : this function does not consider the empty string as valid.
   */
  bool IsValidSimpleColor(const nsAString& aValue) const;

  /**
   * Parse a week string of the form yyyy-Www
   * @param the string to be parsed.
   * @return whether the string is a valid week.
   * Note : this function does not consider the empty string as valid.
   */
  bool IsValidWeek(const nsAString& aValue) const;

  /**
   * Parse a month string of the form yyyy-mm
   * @param the string to be parsed.
   * @return whether the string is a valid month.
   * Note : this function does not consider the empty string as valid.
   */
  bool IsValidMonth(const nsAString& aValue) const;

  /**
   * Parse a date string of the form yyyy-mm-dd
   * @param the string to be parsed.
   * @return whether the string is a valid date.
   * Note : this function does not consider the empty string as valid.
   */
  bool IsValidDate(const nsAString& aValue) const;

  /**
   * Parse a datetime-local string of the form yyyy-mm-ddThh:mm[:ss.s] or
   * yyyy-mm-dd hh:mm[:ss.s], where fractions of seconds can be 1 to 3 digits.
   *
   * @param the string to be parsed.
   * @return whether the string is a valid datetime-local string.
   * Note : this function does not consider the empty string as valid.
   */
  bool IsValidDateTimeLocal(const nsAString& aValue) const;

  /**
   * Parse a year string of the form yyyy
   *
   * @param the string to be parsed.
   *
   * @return the year in aYear.
   * @return whether the parsing was successful.
   */
  bool ParseYear(const nsAString& aValue, uint32_t* aYear) const;

  /**
   * Parse a month string of the form yyyy-mm
   *
   * @param the string to be parsed.
   * @return the year and month in aYear and aMonth.
   * @return whether the parsing was successful.
   */
  bool ParseMonth(const nsAString& aValue,
                  uint32_t* aYear,
                  uint32_t* aMonth) const;

  /**
   * Parse a week string of the form yyyy-Www
   *
   * @param the string to be parsed.
   * @return the year and week in aYear and aWeek.
   * @return whether the parsing was successful.
   */
  bool ParseWeek(const nsAString& aValue,
                 uint32_t* aYear,
                 uint32_t* aWeek) const;
  /**
   * Parse a date string of the form yyyy-mm-dd
   *
   * @param the string to be parsed.
   * @return the date in aYear, aMonth, aDay.
   * @return whether the parsing was successful.
   */
  bool ParseDate(const nsAString& aValue,
                 uint32_t* aYear,
                 uint32_t* aMonth,
                 uint32_t* aDay) const;

  /**
   * Parse a datetime-local string of the form yyyy-mm-ddThh:mm[:ss.s] or
   * yyyy-mm-dd hh:mm[:ss.s], where fractions of seconds can be 1 to 3 digits.
   *
   * @param the string to be parsed.
   * @return the date in aYear, aMonth, aDay and time expressed in milliseconds
   *         in aTime.
   * @return whether the parsing was successful.
   */
  bool ParseDateTimeLocal(const nsAString& aValue,
                          uint32_t* aYear,
                          uint32_t* aMonth,
                          uint32_t* aDay,
                          uint32_t* aTime) const;

  /**
   * Normalize the datetime-local string following the HTML specifications:
   * https://html.spec.whatwg.org/multipage/infrastructure.html#valid-normalised-local-date-and-time-string
   */
  void NormalizeDateTimeLocal(nsAString& aValue) const;

  /**
   * This methods returns the number of days since epoch for a given year and
   * week.
   */
  double DaysSinceEpochFromWeek(uint32_t aYear, uint32_t aWeek) const;

  /**
   * This methods returns the number of days in a given month, for a given year.
   */
  uint32_t NumberOfDaysInMonth(uint32_t aMonth, uint32_t aYear) const;

  /**
   * This methods returns the number of months between January 1970 and the
   * given year and month.
   */
  int32_t MonthsSinceJan1970(uint32_t aYear, uint32_t aMonth) const;

  /**
   * This methods returns the day of the week given a date. If @isoWeek is true,
   * 7=Sunday, otherwise, 0=Sunday.
   */
  uint32_t DayOfWeek(uint32_t aYear, uint32_t aMonth, uint32_t aDay,
                     bool isoWeek) const;

  /**
   * This methods returns the maximum number of week in a given year, the
   * result is either 52 or 53.
   */
  uint32_t MaximumWeekInYear(uint32_t aYear) const;

  /**
   * This methods returns true if it's a leap year.
   */
  bool IsLeapYear(uint32_t aYear) const;

  /**
   * Returns whether aValue is a valid time as described by HTML specifications:
   * http://www.whatwg.org/specs/web-apps/current-work/multipage/common-microsyntaxes.html#valid-time-string
   *
   * @param aValue the string to be tested.
   * @return Whether the string is a valid time per HTML specifications.
   */
  bool IsValidTime(const nsAString& aValue) const;

  /**
   * Returns the time expressed in milliseconds of |aValue| being parsed as a
   * time following the HTML specifications:
   * http://www.whatwg.org/specs/web-apps/current-work/#parse-a-time-string
   *
   * Note: |aResult| can be null.
   *
   * @param aValue  the string to be parsed.
   * @param aResult the time expressed in milliseconds representing the time [out]
   * @return Whether the parsing was successful.
   */
  static bool ParseTime(const nsAString& aValue, uint32_t* aResult);

  /**
   * Sets the value of the element to the string representation of the Decimal.
   *
   * @param aValue The Decimal that will be used to set the value.
   */
  void SetValue(Decimal aValue, CallerType aCallerType);

  /**
   * Update the HAS_RANGE bit field value.
   */
  void UpdateHasRange();

   /**
    * Get the step scale value for the current type.
    * See:
    * http://www.whatwg.org/specs/web-apps/current-work/multipage/common-input-element-attributes.html#concept-input-step-scale
    */
  Decimal GetStepScaleFactor() const;

  /**
   * Return the base used to compute if a value matches step.
   * Basically, it's the min attribute if present and a default value otherwise.
   *
   * @return The step base.
   */
  Decimal GetStepBase() const;

  /**
   * Returns the default step for the current type.
   * @return the default step for the current type.
   */
  Decimal GetDefaultStep() const;

  enum StepCallerType {
    CALLED_FOR_USER_EVENT,
    CALLED_FOR_SCRIPT
  };

  /**
   * Sets the aValue outparam to the value that this input would take if
   * someone tries to step aStep steps and this input's value would change as
   * a result. Leaves aValue untouched if this inputs value would not change
   * (e.g. already at max, and asking for the next step up).
   *
   * Negative aStep means step down, positive means step up.
   *
   * Returns NS_OK or else the error values that should be thrown if this call
   * was initiated by a stepUp()/stepDown() call from script under conditions
   * that such a call should throw.
   */
  nsresult GetValueIfStepped(int32_t aStepCount,
                             StepCallerType aCallerType,
                             Decimal* aNextStep);

  /**
   * Apply a step change from stepUp or stepDown by multiplying aStep by the
   * current step value.
   *
   * @param aStep The value used to be multiplied against the step value.
   */
  nsresult ApplyStep(int32_t aStep);

  /**
   * Returns if the current type is an experimental mobile type.
   */
  static bool IsExperimentalMobileType(uint8_t aType);

  /*
   * Returns if the current type is one of the date/time input types: date,
   * time and month. TODO: week and datetime-local.
   */
  static bool IsDateTimeInputType(uint8_t aType);

  /**
   * Flushes the layout frame tree to make sure we have up-to-date frames.
   */
  void FlushFrames();

  /**
   * Returns true if the element should prevent dispatching another DOMActivate.
   * This is used in situations where the anonymous subtree should already have
   * sent a DOMActivate and prevents firing more than once.
   */
  bool ShouldPreventDOMActivateDispatch(EventTarget* aOriginalTarget);

  /**
   * Some input type (color and file) let user choose a value using a picker:
   * this function checks if it is needed, and if so, open the corresponding
   * picker (color picker or file picker).
   */
  nsresult MaybeInitPickers(EventChainPostVisitor& aVisitor);

  enum FilePickerType {
    FILE_PICKER_FILE,
    FILE_PICKER_DIRECTORY
  };
  nsresult InitFilePicker(FilePickerType aType);
  nsresult InitColorPicker();

  /**
   * Use this function before trying to open a picker.
   * It checks if the page is allowed to open a new pop-up.
   * If it returns true, you should not create the picker.
   *
   * @return true if popup should be blocked, false otherwise
   */
  bool IsPopupBlocked() const;

  GetFilesHelper* GetOrCreateGetFilesHelper(bool aRecursiveFlag,
                                            ErrorResult& aRv);

  void ClearGetFilesHelpers();

  /**
   * nsINode::SetMayBeApzAware() will be invoked in this function if necessary
   * to prevent default action of APZC so that we can increase/decrease the
   * value of this InputElement when mouse wheel event comes without scrolling
   * the page.
   *
   * SetMayBeApzAware() will set flag MayBeApzAware which is checked by apzc to
   * decide whether to add this element into its dispatch-to-content region.
   */
  void UpdateApzAwareFlag();

  /**
   * A helper to get the current selection range.  Will throw on the ErrorResult
   * if we have no editor state.
   */
  void GetSelectionRange(uint32_t* aSelectionStart,
                         uint32_t* aSelectionEnd,
                         ErrorResult& aRv);

  /**
   * Override for nsImageLoadingContent.
   */
  nsIContent* AsContent() override { return this; }

  nsCOMPtr<nsIControllers> mControllers;

  /*
   * In mInputData, the mState field is used if IsSingleLineTextControl returns
   * true and mValue is used otherwise.  We have to be careful when handling it
   * on a type change.
   *
   * Accessing the mState member should be done using the GetEditorState function,
   * which returns null if the state is not present.
   */
  union InputData {
    /**
     * The current value of the input if it has been changed from the default
     */
    char16_t*               mValue;
    /**
     * The state of the text editor associated with the text/password input
     */
    nsTextEditorState*       mState;
  } mInputData;

  struct FileData;
  UniquePtr<FileData> mFileData;

  /**
   * The value of the input element when first initialized and it is updated
   * when the element is either changed through a script, focused or dispatches
   * a change event. This is to ensure correct future change event firing.
   * NB: This is ONLY applicable where the element is a text control. ie,
   * where type= "text", "email", "search", "tel", "url" or "password".
   */
  nsString mFocusedValue;

  /**
   * If mIsDraggingRange is true, this is the value that the input had before
   * the drag started. Used to reset the input to its old value if the drag is
   * canceled.
   */
  Decimal mRangeThumbDragStartValue;

  /**
   * Current value in the input box, in DateTimeValue dictionary format, see
   * HTMLInputElement.webidl for details.
   */
  nsAutoPtr<DateTimeValue> mDateTimeInputBoxValue;

  /**
   * The selection properties cache for number controls.  This is needed because
   * the number controls don't recycle their text field, so the normal cache in
   * nsTextEditorState cannot do its job.
   */
  nsTextEditorState::SelectionProperties mSelectionProperties;

  /**
   * The triggering principal for the src attribute.
   */
  nsCOMPtr<nsIPrincipal> mSrcTriggeringPrincipal;

  /*
   * InputType object created based on input type.
   */
  UniquePtr<InputType, DoNotDelete> mInputType;

  // Memory allocated for mInputType, reused when type changes.
  char mInputTypeMem[INPUT_TYPE_SIZE];

  // Step scale factor values, for input types that have one.
  static const Decimal kStepScaleFactorDate;
  static const Decimal kStepScaleFactorNumberRange;
  static const Decimal kStepScaleFactorTime;
  static const Decimal kStepScaleFactorMonth;
  static const Decimal kStepScaleFactorWeek;

  // Default step base value when a type do not have specific one.
  static const Decimal kDefaultStepBase;
  // Default step base value when type=week does not not have a specific one,
  // which is −259200000, the start of week 1970-W01.
  static const Decimal kDefaultStepBaseWeek;

  // Default step used when there is no specified step.
  static const Decimal kDefaultStep;
  static const Decimal kDefaultStepTime;

  // Float value returned by GetStep() when the step attribute is set to 'any'.
  static const Decimal kStepAny;

  // Minimum year limited by HTML standard, year >= 1.
  static const double kMinimumYear;
  // Maximum year limited by ECMAScript date object range, year <= 275760.
  static const double kMaximumYear;
  // Maximum valid week is 275760-W37.
  static const double kMaximumWeekInMaximumYear;
  // Maximum valid day is 275760-09-13.
  static const double kMaximumDayInMaximumYear;
  // Maximum valid month is 275760-09.
  static const double kMaximumMonthInMaximumYear;
  // Long years in a ISO calendar have 53 weeks in them.
  static const double kMaximumWeekInYear;
  // Milliseconds in a day.
  static const double kMsPerDay;

  nsContentUtils::AutocompleteAttrState mAutocompleteAttrState;
  nsContentUtils::AutocompleteAttrState mAutocompleteInfoState;
  bool                     mDisabledChanged     : 1;
  bool                     mValueChanged        : 1;
  bool                     mLastValueChangeWasInteractive : 1;
  bool                     mCheckedChanged      : 1;
  bool                     mChecked             : 1;
  bool                     mHandlingSelectEvent : 1;
  bool                     mShouldInitChecked   : 1;
  bool                     mDoneCreating        : 1;
  bool                     mInInternalActivate  : 1;
  bool                     mCheckedIsToggled    : 1;
  bool                     mIndeterminate       : 1;
  bool                     mInhibitRestoration  : 1;
  bool                     mCanShowValidUI      : 1;
  bool                     mCanShowInvalidUI    : 1;
  bool                     mHasRange            : 1;
  bool                     mIsDraggingRange     : 1;
  bool                     mNumberControlSpinnerIsSpinning : 1;
  bool                     mNumberControlSpinnerSpinsUp : 1;
  bool                     mPickerRunning : 1;
  bool                     mSelectionCached : 1;
  bool                     mIsPreviewEnabled : 1;
  bool                     mHasPatternAttribute : 1;

private:
  static void ImageInputMapAttributesIntoRule(const nsMappedAttributes* aAttributes,
                                              MappedDeclarations&);

  /**
   * Returns true if this input's type will fire a DOM "change" event when it
   * loses focus if its value has changed since it gained focus.
   */
  bool MayFireChangeOnBlur() const {
    return MayFireChangeOnBlur(mType);
  }

  /**
   * Returns true if selection methods can be called on element
   */
  bool SupportsTextSelection() const {
    return mType == NS_FORM_INPUT_TEXT || mType == NS_FORM_INPUT_SEARCH ||
           mType == NS_FORM_INPUT_URL || mType == NS_FORM_INPUT_TEL ||
           mType == NS_FORM_INPUT_PASSWORD;
  }

  static bool MayFireChangeOnBlur(uint8_t aType) {
    return IsSingleLineTextControl(false, aType) ||
           aType == NS_FORM_INPUT_RANGE ||
           aType == NS_FORM_INPUT_NUMBER ||
           aType == NS_FORM_INPUT_TIME ||
           aType == NS_FORM_INPUT_DATE;
  }

  /**
   * Checks if aDateTimeInputType should be supported based on "dom.forms.datetime",
   * and "dom.experimental_forms".
   */
  static bool
  IsDateTimeTypeSupported(uint8_t aDateTimeInputType);

  /**
   * Checks preference "dom.webkitBlink.filesystem.enabled" to determine if
   * webkitEntries should be supported.
   */
  static bool
  IsWebkitFileSystemEnabled();

  /**
   * Checks preference "dom.input.dirpicker" to determine if file and directory
   * entries API should be supported.
   */
  static bool
  IsDirPickerEnabled();

  /**
   * Checks preference "dom.experimental_forms" to determine if experimental
   * implementation of input element should be enabled.
   */
  static bool
  IsExperimentalFormsEnabled();

  /**
   * Checks preference "dom.forms.datetime" to determine if input date and time
   * should be supported.
   */
  static bool
  IsInputDateTimeEnabled();

  /**
   * Checks preference "dom.forms.datetime.others" to determine if input week,
   * month and datetime-local should be supported.
   */
  static bool
  IsInputDateTimeOthersEnabled();

  /**
   * Checks preference "dom.forms.color" to determine if date/time related
   * types should be supported.
   */
  static bool
  IsInputColorEnabled();

  struct nsFilePickerFilter {
    nsFilePickerFilter()
      : mFilterMask(0) {}

    explicit nsFilePickerFilter(int32_t aFilterMask)
      : mFilterMask(aFilterMask) {}

    nsFilePickerFilter(const nsString& aTitle,
                       const nsString& aFilter)
      : mFilterMask(0), mTitle(aTitle), mFilter(aFilter) {}

    nsFilePickerFilter(const nsFilePickerFilter& other) {
      mFilterMask = other.mFilterMask;
      mTitle = other.mTitle;
      mFilter = other.mFilter;
    }

    bool operator== (const nsFilePickerFilter& other) const {
      if ((mFilter == other.mFilter) && (mFilterMask == other.mFilterMask)) {
        return true;
      } else {
        return false;
      }
    }

    // Filter mask, using values defined in nsIFilePicker
    int32_t mFilterMask;
    // If mFilterMask is defined, mTitle and mFilter are useless and should be
    // ignored
    nsString mTitle;
    nsString mFilter;
  };

  class nsFilePickerShownCallback
    : public nsIFilePickerShownCallback
  {
    virtual ~nsFilePickerShownCallback()
    { }

  public:
    nsFilePickerShownCallback(HTMLInputElement* aInput,
                              nsIFilePicker* aFilePicker);
    NS_DECL_ISUPPORTS

    NS_IMETHOD Done(int16_t aResult) override;

  private:
    nsCOMPtr<nsIFilePicker> mFilePicker;
    RefPtr<HTMLInputElement> mInput;
  };

  static void ReleaseTextEditorState(nsTextEditorState* aState);

  static nsTextEditorState* sCachedTextEditorState;
  static bool sShutdown;
};

} // namespace dom
} // namespace mozilla

#endif