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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, 2011 Apple Inc. All rights reserved.
      6  * Copyright (C) 2010 Google Inc. All rights reserved.
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  *
     23  */
     24 
     25 #ifndef HTMLOptionElement_h
     26 #define HTMLOptionElement_h
     27 
     28 #include "core/html/HTMLElement.h"
     29 
     30 namespace WebCore {
     31 
     32 class ExceptionState;
     33 class HTMLDataListElement;
     34 class HTMLSelectElement;
     35 
     36 class HTMLOptionElement FINAL : public HTMLElement {
     37 public:
     38     static PassRefPtr<HTMLOptionElement> create(Document*);
     39     static PassRefPtr<HTMLOptionElement> create(const QualifiedName&, Document*);
     40     static PassRefPtr<HTMLOptionElement> createForJSConstructor(Document*, const String& data, const String& value,
     41         bool defaultSelected, bool selected, ExceptionState&);
     42 
     43     virtual String text() const;
     44     void setText(const String&, ExceptionState&);
     45 
     46     int index() const;
     47 
     48     String value() const;
     49     void setValue(const String&);
     50 
     51     bool selected();
     52     void setSelected(bool);
     53 
     54     HTMLDataListElement* ownerDataListElement() const;
     55     HTMLSelectElement* ownerSelectElement() const;
     56 
     57     String label() const;
     58     void setLabel(const String&);
     59 
     60     bool ownElementDisabled() const { return m_disabled; }
     61 
     62     virtual bool isDisabledFormControl() const OVERRIDE;
     63 
     64     String textIndentedToRespectGroupLabel() const;
     65 
     66     void setSelectedState(bool);
     67 
     68 private:
     69     HTMLOptionElement(const QualifiedName&, Document*);
     70 
     71     virtual bool rendererIsFocusable() const OVERRIDE;
     72     virtual bool rendererIsNeeded(const NodeRenderingContext&) { return false; }
     73     virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
     74     virtual void detach(const AttachContext& = AttachContext()) OVERRIDE;
     75 
     76     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     77 
     78     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     79     virtual void accessKeyAction(bool);
     80 
     81     virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
     82 
     83     // <option> never has a renderer so we manually manage a cached style.
     84     void updateNonRenderStyle();
     85     virtual RenderStyle* nonRendererStyle() const OVERRIDE;
     86     virtual PassRefPtr<RenderStyle> customStyleForRenderer() OVERRIDE;
     87 
     88     void didRecalcStyle(StyleChange) OVERRIDE;
     89 
     90     String collectOptionInnerText() const;
     91 
     92     bool m_disabled;
     93     bool m_isSelected;
     94     RefPtr<RenderStyle> m_style;
     95 };
     96 
     97 void toHTMLOptionElement(const HTMLOptionElement*); // This overload will catch anyone doing an unnecessary cast.
     98 
     99 inline HTMLOptionElement* toHTMLOptionElement(Node* node)
    100 {
    101     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(HTMLNames::optionTag));
    102     return static_cast<HTMLOptionElement*>(node);
    103 }
    104 
    105 inline const HTMLOptionElement* toHTMLOptionElement(const Node* node)
    106 {
    107     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(HTMLNames::optionTag));
    108     return static_cast<const HTMLOptionElement*>(node);
    109 }
    110 
    111 } // namespace WebCore
    112 
    113 #endif
    114