--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/html/HTMLOptGroupElement.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,150 @@
+/*
+ * 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, 2008, 2010 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
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "HTMLOptGroupElement.h"
+
+#include "CSSStyleSelector.h"
+#include "Document.h"
+#include "HTMLNames.h"
+#include "HTMLSelectElement.h"
+#include "RenderMenuList.h"
+#include "NodeRenderStyle.h"
+#include <wtf/StdLibExtras.h>
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+inline HTMLOptGroupElement::HTMLOptGroupElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
+    : HTMLFormControlElement(tagName, document, form)
+{
+    ASSERT(hasTagName(optgroupTag));
+}
+
+PassRefPtr<HTMLOptGroupElement> HTMLOptGroupElement::create(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
+{
+    return adoptRef(new HTMLOptGroupElement(tagName, document, form));
+}
+
+bool HTMLOptGroupElement::supportsFocus() const
+{
+    return HTMLElement::supportsFocus();
+}
+
+bool HTMLOptGroupElement::isFocusable() const
+{
+    // Optgroup elements do not have a renderer so we check the renderStyle instead.
+    return supportsFocus() && renderStyle() && renderStyle()->display() != NONE;
+}
+
+const AtomicString& HTMLOptGroupElement::formControlType() const
+{
+    DEFINE_STATIC_LOCAL(const AtomicString, optgroup, ("optgroup"));
+    return optgroup;
+}
+
+void HTMLOptGroupElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
+{
+    recalcSelectOptions();
+    HTMLFormControlElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
+}
+
+void HTMLOptGroupElement::parseMappedAttribute(Attribute* attr)
+{
+    HTMLFormControlElement::parseMappedAttribute(attr);
+    recalcSelectOptions();
+}
+
+void HTMLOptGroupElement::recalcSelectOptions()
+{
+    Node* select = parentNode();
+    while (select && !select->hasTagName(selectTag))
+        select = select->parentNode();
+    if (select)
+        static_cast<HTMLSelectElement*>(select)->setRecalcListItems();
+}
+
+bool HTMLOptGroupElement::checkDTD(const Node* newChild)
+{
+    // Make sure to keep this in sync with <select> (other than not allowing an optgroup).
+    return newChild->isTextNode() || newChild->hasTagName(HTMLNames::optionTag) || newChild->hasTagName(HTMLNames::hrTag) || newChild->hasTagName(HTMLNames::scriptTag);
+}
+
+void HTMLOptGroupElement::attach()
+{
+    if (parentNode()->renderStyle())
+        setRenderStyle(styleForRenderer());
+    HTMLFormControlElement::attach();
+}
+
+void HTMLOptGroupElement::detach()
+{
+    m_style.clear();
+    HTMLFormControlElement::detach();
+}
+
+void HTMLOptGroupElement::setRenderStyle(PassRefPtr<RenderStyle> newStyle)
+{
+    m_style = newStyle;
+}
+    
+RenderStyle* HTMLOptGroupElement::nonRendererRenderStyle() const 
+{ 
+    return m_style.get(); 
+}
+
+String HTMLOptGroupElement::groupLabelText() const
+{
+    String itemText = document()->displayStringModifiedByEncoding(getAttribute(labelAttr));
+    
+    // In WinIE, leading and trailing whitespace is ignored in options and optgroups. We match this behavior.
+    itemText = itemText.stripWhiteSpace();
+    // We want to collapse our whitespace too.  This will match other browsers.
+    itemText = itemText.simplifyWhiteSpace();
+        
+    return itemText;
+}
+    
+HTMLSelectElement* HTMLOptGroupElement::ownerSelectElement() const
+{
+    Node* select = parentNode();
+    while (select && !select->hasTagName(selectTag))
+        select = select->parentNode();
+    
+    if (!select)
+       return 0;
+    
+    return static_cast<HTMLSelectElement*>(select);
+}
+
+void HTMLOptGroupElement::accessKeyAction(bool)
+{
+    HTMLSelectElement* select = ownerSelectElement();
+    // send to the parent to bring focus to the list box
+    if (select && !select->focused())
+        select->accessKeyAction(false);
+}
+    
+} // namespace