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      1 /*
      2  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  *
     19  */
     20 
     21 #ifndef OptionElement_h
     22 #define OptionElement_h
     23 
     24 #include "PlatformString.h"
     25 
     26 namespace WebCore {
     27 
     28 class Element;
     29 class Document;
     30 class OptionElementData;
     31 class SelectElement;
     32 
     33 class OptionElement {
     34 public:
     35     virtual ~OptionElement() { }
     36 
     37     virtual bool disabled() const = 0;
     38     virtual bool selected() const = 0;
     39     virtual void setSelectedState(bool) = 0;
     40 
     41     virtual String text() const = 0;
     42     virtual String textIndentedToRespectGroupLabel() const = 0;
     43     virtual String value() const = 0;
     44 
     45 protected:
     46     static void setSelectedState(OptionElementData&, Element*, bool selected);
     47     static int optionIndex(SelectElement*, const Element*);
     48     static String collectOptionLabelOrText(const OptionElementData&, const Element*);
     49     static String collectOptionTextRespectingGroupLabel(const OptionElementData&, const Element*);
     50     static String collectOptionValue(const OptionElementData&, const Element*);
     51 private:
     52     static String collectOptionInnerText(const Element*);
     53     static String normalizeText(const Document*, const String&);
     54 };
     55 
     56 // HTML/WMLOptionElement hold this struct as member variable
     57 // and pass it to the static helper functions in OptionElement
     58 class OptionElementData {
     59 public:
     60     OptionElementData();
     61     ~OptionElementData();
     62 
     63     String value() const { return m_value; }
     64     void setValue(const String& value) { m_value = value; }
     65 
     66     String label() const { return m_label; }
     67     void setLabel(const String& label) { m_label = label; }
     68 
     69     bool selected() const { return m_selected; }
     70     void setSelected(bool selected) { m_selected = selected; }
     71 
     72 private:
     73     String m_value;
     74     String m_label;
     75     bool m_selected;
     76 };
     77 
     78 OptionElement* toOptionElement(Element*);
     79 bool isOptionElement(Element*);
     80 
     81 }
     82 
     83 #endif
     84