Implement :valid and :invalid pseudoclass for <fieldset>

Source/core/html/HTMLFormControlElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 235 matching lines @@
     HTMLElement::didMoveToNewDocument(oldDocument);
 }
 
 Node::InsertionNotificationRequest HTMLFormControlElement::insertedInto(ContainerNode* insertionPoint)
 {
     m_ancestorDisabledState = AncestorDisabledStateUnknown;
     m_dataListAncestorState = Unknown;
     setNeedsWillValidateCheck();
     HTMLElement::insertedInto(insertionPoint);
     FormAssociatedElement::insertedInto(insertionPoint);
+    fieldSetAncestorsSetNeedsValidityCheck(insertionPoint);
     return InsertionDone;
 }
 
 void HTMLFormControlElement::removedFrom(ContainerNode* insertionPoint)
 {
+    fieldSetAncestorsSetNeedsValidityCheck(insertionPoint);
     hideVisibleValidationMessage();
     m_hasValidationMessage = false;
     m_ancestorDisabledState = AncestorDisabledStateUnknown;
     m_dataListAncestorState = Unknown;
     HTMLElement::removedFrom(insertionPoint);
     FormAssociatedElement::removedFrom(insertionPoint);
 }
 
 void HTMLFormControlElement::willChangeForm()
 {
     formOwnerSetNeedsValidityCheck();
     FormAssociatedElement::willChangeForm();
 }
 
 void HTMLFormControlElement::didChangeForm()
 {
     formOwnerSetNeedsValidityCheck();
     FormAssociatedElement::didChangeForm();
 }
 
 void HTMLFormControlElement::formOwnerSetNeedsValidityCheck()
 {
     HTMLFormElement* form = formOwner();
     if (form)
         form->setNeedsValidityCheck();
 }
 
+void HTMLFormControlElement::fieldSetAncestorsSetNeedsValidityCheck(Node* node)
+{
+    if (!node)
+        return;
+    HTMLFieldSetElement* fieldSet = Traversal<HTMLFieldSetElement>::firstAncestorOrSelf(*node);
+    HTMLFieldSetElement* lastFieldSet = 0;
+    while (fieldSet) {
+        lastFieldSet = fieldSet;
+        fieldSet = Traversal<HTMLFieldSetElement>::firstAncestor(*fieldSet);
+    }
+    if (lastFieldSet)
+        lastFieldSet->setNeedsValidityCheck();
+}
+
 void HTMLFormControlElement::setChangedSinceLastFormControlChangeEvent(bool changed)
 {
     m_wasChangedSinceLastFormControlChangeEvent = changed;
 }
 
 void HTMLFormControlElement::dispatchChangeEvent()
 {
     dispatchScopedEvent(Event::createBubble(EventTypeNames::change));
 }
 
@@ skipping 214 matching lines @@
     // correctly when something which changes validity is updated.
     ASSERT(m_isValid == valid());
     return m_isValid;
 }
 
 void HTMLFormControlElement::setNeedsValidityCheck()
 {
     bool newIsValid = valid();
     if (willValidate() && newIsValid != m_isValid) {
         formOwnerSetNeedsValidityCheck();
+        fieldSetAncestorsSetNeedsValidityCheck(parentNode());
         // Update style for pseudo classes such as :valid :invalid.
         setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::createWithExtraData(StyleChangeReason::PseudoClass, StyleChangeExtraData::Invalid));
     }
     m_isValid = newIsValid;
 
     // Updates only if this control already has a validation message.
     if (isValidationMessageVisible()) {
         // Calls updateVisibleValidationMessage() even if m_isValid is not
         // changed because a validation message can be changed.
         updateVisibleValidationMessage();
@@ skipping 42 matching lines @@
 
 void HTMLFormControlElement::setFocus(bool flag)
 {
     LabelableElement::setFocus(flag);
 
     if (!flag && wasChangedSinceLastFormControlChangeEvent())
         dispatchFormControlChangeEvent();
 }
 
 } // namespace blink