Revert 105710 - Introduce RadioButtonGroup class to keep track of the group members and required st…

Source/WebCore/html/RadioInputType.cpp

 /*
  * Copyright (C) 2005, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 30 matching lines @@
     return adoptPtr(new RadioInputType(element));
 }
 
 const AtomicString& RadioInputType::formControlType() const
 {
     return InputTypeNames::radio();
 }
 
 bool RadioInputType::valueMissing(const String&) const
 {
-    return element()->checkedRadioButtons().isInRequiredGroup(element()) && !element()->checkedRadioButtons().checkedButtonForGroup(element()->name());
+    return !element()->checkedRadioButtons().checkedButtonForGroup(element()->name());
 }
 
 String RadioInputType::valueMissingText() const
 {
     return validationMessageValueMissingForRadioText();
 }
 
 void RadioInputType::handleClickEvent(MouseEvent* event)
 {
     event->setDefaultHandled();
@@ skipping 64 matching lines @@
     if (currentFocusedNode && currentFocusedNode->hasTagName(inputTag)) {
         HTMLInputElement* focusedInput = static_cast<HTMLInputElement*>(currentFocusedNode);
         if (focusedInput->isRadioButton() && focusedInput->form() == element()->form() && focusedInput->name() == element()->name())
             return false;
     }
 
     // Allow keyboard focus if we're checked or if nothing in the group is checked.
     return element()->checked() || !element()->checkedRadioButtons().checkedButtonForGroup(element()->name());
 }
 
+void RadioInputType::attach()
+{
+    InputType::attach();
+    element()->updateCheckedRadioButtons();
+}
+
 bool RadioInputType::shouldSendChangeEventAfterCheckedChanged()
 {
     // Don't send a change event for a radio button that's getting unchecked.
     // This was done to match the behavior of other browsers.
     return element()->checked();
 }
 
 PassOwnPtr<ClickHandlingState> RadioInputType::willDispatchClick()
 {
     // An event handler can use preventDefault or "return false" to reverse the selection we do here.
@@ skipping 34 matching lines @@
     // The work we did in willDispatchClick was default handling.
     event->setDefaultHandled();
 }
 
 bool RadioInputType::isRadioButton() const
 {
     return true;
 }
 
 } // namespace WebCore