Bug 1850295 - Update :user-{valid,invalid} to follow the spec. r=smaug

(Modulo open spec issues linked in comments)

Differential Revision: https://phabricator.services.mozilla.com/D196986

dom/html/HTMLInputElement.h

@@ -15,7 +15,6 @@
 #include "mozilla/UniquePtr.h"
 #include "mozilla/Variant.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"
@@ -36,6 +35,7 @@
 #include "nsIContentPrefService2.h"
 #include "nsContentUtils.h"
 
+class nsIEditor;
 class nsIRadioVisitor;
 
 namespace mozilla {
@@ -338,7 +338,7 @@ class HTMLInputElement final : public TextControlElement,
   // as needed.  aNotify controls whether the element state update
   // needs to notify.
   void UpdateAllValidityStates(bool aNotify);
-  void UpdateValidityElementStates(bool aNotify) final;
+  void UpdateValidityElementStates(bool aNotify);
   MOZ_CAN_RUN_SCRIPT
   void MaybeUpdateAllValidityStates(bool aNotify) {
     // If you need to add new type which supports validationMessage, you should
@@ -395,16 +395,7 @@ class HTMLInputElement final : public TextControlElement,
    */
   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);
+  void SetUserInteracted(bool) final;
 
   /**
    * Fires change event if mFocusedValue and current value held are unequal and
@@ -1115,37 +1106,6 @@ class HTMLInputElement final : public TextControlElement,
   void SetAutoDirectionality(bool aNotify,
                              const nsAString* aKnownValue = nullptr);
 
-  /**
-   * 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 within the DOM tree that the element
    * is currently a member of, if one exists.
@@ -1551,6 +1511,8 @@ class HTMLInputElement final : public TextControlElement,
   // https://html.spec.whatwg.org/#concept-fe-dirty
   // TODO: Maybe rename to match the spec?
   bool mValueChanged : 1;
+  // https://html.spec.whatwg.org/#user-interacted
+  bool mUserInteracted : 1;
   bool mLastValueChangeWasInteractive : 1;
   bool mCheckedChanged : 1;
   bool mChecked : 1;
@@ -1561,8 +1523,6 @@ class HTMLInputElement final : public TextControlElement,
   bool mCheckedIsToggled : 1;
   bool mIndeterminate : 1;
   bool mInhibitRestoration : 1;
-  bool mCanShowValidUI : 1;
-  bool mCanShowInvalidUI : 1;
   bool mHasRange : 1;
   bool mIsDraggingRange : 1;
   bool mNumberControlSpinnerIsSpinning : 1;