Implement :valid and :invalid pseudoclass for <form>

Source/core/html/HTMLFormControlElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 67 matching lines @@
     // Return true for a successful control (see HTML4-17.13.2).
     virtual bool appendFormData(FormDataList&, bool) OVERRIDE { return false; }
     virtual String resultForDialogSubmit();
 
     virtual bool canBeSuccessfulSubmitButton() const { return false; }
     bool isSuccessfulSubmitButton() const;
     virtual bool isActivatedSubmit() const { return false; }
     virtual void setActivatedSubmit(bool) { }
 
     virtual bool willValidate() const OVERRIDE;
+
     void updateVisibleValidationMessage();
     void hideVisibleValidationMessage();
     bool checkValidity(WillBeHeapVector<RefPtrWillBeMember<FormAssociatedElement> >* unhandledInvalidControls = 0);
     // This must be called when a validation constraint or control value is changed.
     void setNeedsValidityCheck();
     virtual void setCustomValidity(const String&) OVERRIDE FINAL;
     void findCustomValidationMessageTextDirection(const String& message, TextDirection &messageDir, String& subMessage, TextDirection& subMessageDir);
 
     bool isReadOnly() const { return m_isReadOnly; }
     bool isDisabledOrReadOnly() const { return isDisabledFormControl() || m_isReadOnly; }
@@ skipping 16 matching lines @@
 
 protected:
     HTMLFormControlElement(const QualifiedName& tagName, Document&, HTMLFormElement*);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual void requiredAttributeChanged();
     virtual void disabledAttributeChanged();
     virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
+    virtual void willChangeForm() OVERRIDE;
+    virtual void didChangeForm() OVERRIDE;
     virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE;
 
     virtual bool supportsFocus() const OVERRIDE;
     virtual bool isKeyboardFocusable() const OVERRIDE;
     virtual bool shouldShowFocusRingOnMouseFocus() const;
     virtual bool shouldHaveFocusAppearance() const OVERRIDE FINAL;
     virtual void dispatchBlurEvent(Element* newFocusedElement) OVERRIDE;
     virtual void dispatchFocusEvent(Element* oldFocusedElement, FocusType) OVERRIDE;
     virtual void willCallDefaultEventHandler(const Event&) OVERRIDE FINAL;
 
@@ skipping 11 matching lines @@
     virtual void refFormAssociatedElement() OVERRIDE FINAL { ref(); }
     virtual void derefFormAssociatedElement() OVERRIDE FINAL { deref(); }
 #endif
 
     virtual bool isFormControlElement() const OVERRIDE FINAL { return true; }
     virtual bool alwaysCreateUserAgentShadowRoot() const OVERRIDE { return true; }
 
     virtual short tabIndex() const OVERRIDE FINAL;
 
     virtual bool isDefaultButtonForForm() const OVERRIDE FINAL;
-    virtual bool isValidFormControlElement() OVERRIDE FINAL;
+    virtual bool isValidElement() OVERRIDE FINAL;
     void updateAncestorDisabledState() const;
 
     bool isValidationMessageVisible() const;
     ValidationMessageClient* validationMessageClient() const;
 
+    // Requests validity recalc for the form owner, if one exists.
+    void formOwnerSetNeedsValidityCheck();
+
     bool m_disabled : 1;
     bool m_isAutofilled : 1;
     bool m_isReadOnly : 1;
     bool m_isRequired : 1;
     bool m_hasValidationMessage : 1;
 
     enum AncestorDisabledState { AncestorDisabledStateUnknown, AncestorDisabledStateEnabled, AncestorDisabledStateDisabled };
     mutable AncestorDisabledState m_ancestorDisabledState;
     enum DataListAncestorState { Unknown, InsideDataList, NotInsideDataList };
     mutable enum DataListAncestorState m_dataListAncestorState;
@@ skipping 16 matching lines @@
 {
     return element.isFormControlElement();
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLFormControlElement);
 DEFINE_TYPE_CASTS(HTMLFormControlElement, FormAssociatedElement, control, control->isFormControlElement(), control.isFormControlElement());
 
 } // namespace
 
 #endif