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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2000 Dirk Mueller (mueller (at) kde.org)
      5  * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
      6  *
      7  * This library is free software; you can redistribute it and/or
      8  * modify it under the terms of the GNU Library General Public
      9  * License as published by the Free Software Foundation; either
     10  * version 2 of the License, or (at your option) any later version.
     11  *
     12  * This library is distributed in the hope that it will be useful,
     13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     15  * Library General Public License for more details.
     16  *
     17  * You should have received a copy of the GNU Library General Public License
     18  * along with this library; see the file COPYING.LIB.  If not, write to
     19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     20  * Boston, MA 02110-1301, USA.
     21  *
     22  */
     23 
     24 #ifndef HTMLFieldSetElement_h
     25 #define HTMLFieldSetElement_h
     26 
     27 #include "core/html/HTMLFormControlElement.h"
     28 
     29 namespace WebCore {
     30 
     31 class FormAssociatedElement;
     32 class HTMLCollection;
     33 
     34 class HTMLFieldSetElement FINAL : public HTMLFormControlElement {
     35 public:
     36     static PassRefPtr<HTMLFieldSetElement> create(const QualifiedName&, Document*, HTMLFormElement*);
     37     HTMLLegendElement* legend() const;
     38 
     39     PassRefPtr<HTMLCollection> elements();
     40 
     41     const Vector<FormAssociatedElement*>& associatedElements() const;
     42     unsigned length() const;
     43 
     44 protected:
     45     virtual void disabledAttributeChanged() OVERRIDE;
     46 
     47 private:
     48     HTMLFieldSetElement(const QualifiedName&, Document*, HTMLFormElement*);
     49 
     50     virtual bool isEnumeratable() const { return true; }
     51     virtual bool supportsFocus() const;
     52     virtual RenderObject* createRenderer(RenderStyle*);
     53     virtual const AtomicString& formControlType() const;
     54     virtual bool recalcWillValidate() const { return false; }
     55     virtual void childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta) OVERRIDE;
     56     virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
     57 
     58     static void invalidateDisabledStateUnder(Element*);
     59     void refreshElementsIfNeeded() const;
     60 
     61     mutable Vector<FormAssociatedElement*> m_associatedElements;
     62     // When dom tree is modified, we have to refresh the m_associatedElements array.
     63     mutable uint64_t m_documentVersion;
     64 };
     65 
     66 } // namespace
     67 
     68 #endif
     69