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      1 /*
      2  * Copyright (C) 2008 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef AccessibilityListBoxOption_h
     30 #define AccessibilityListBoxOption_h
     31 
     32 #include "core/accessibility/AccessibilityObject.h"
     33 #include "core/html/HTMLElement.h"
     34 #include "wtf/Forward.h"
     35 
     36 namespace WebCore {
     37 
     38 class AccessibilityListBox;
     39 class Element;
     40 class HTMLElement;
     41 class HTMLSelectElement;
     42 
     43 class AccessibilityListBoxOption : public AccessibilityObject {
     44 
     45 private:
     46     AccessibilityListBoxOption();
     47 public:
     48     static PassRefPtr<AccessibilityListBoxOption> create();
     49     virtual ~AccessibilityListBoxOption();
     50 
     51     void setHTMLElement(HTMLElement* element) { m_optionElement = element; }
     52 
     53     virtual AccessibilityRole roleValue() const OVERRIDE { return ListBoxOptionRole; }
     54     virtual bool isSelected() const OVERRIDE;
     55     virtual bool isEnabled() const OVERRIDE;
     56     virtual bool isSelectedOptionActive() const OVERRIDE;
     57     virtual String stringValue() const OVERRIDE;
     58     virtual Element* actionElement() const OVERRIDE;
     59     virtual Node* node() const OVERRIDE { return m_optionElement; }
     60     virtual void setSelected(bool) OVERRIDE;
     61     virtual bool canSetSelectedAttribute() const OVERRIDE;
     62 
     63     virtual LayoutRect elementRect() const OVERRIDE;
     64     virtual AccessibilityObject* parentObject() const OVERRIDE;
     65 
     66 private:
     67     HTMLElement* m_optionElement;
     68 
     69     virtual bool canHaveChildren() const OVERRIDE { return false; }
     70     virtual bool computeAccessibilityIsIgnored() const OVERRIDE;
     71 
     72     HTMLSelectElement* listBoxOptionParentNode() const;
     73     int listBoxOptionIndex() const;
     74     AccessibilityObject* listBoxOptionAccessibilityObject(HTMLElement*) const;
     75 };
     76 
     77 } // namespace WebCore
     78 
     79 #endif // AccessibilityListBoxOption_h
     80