accessibilityobject.h

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    virtual bool isInputImage() const { return false; }
    virtual bool isProgressIndicator() const { return false; };
    virtual bool isSlider() const { return false; };
    virtual bool isControl() const { return false; };
    virtual bool isList() const { return false; };
    virtual bool isDataTable() const { return false; };
    virtual bool isTableRow() const { return false; };
    virtual bool isTableColumn() const { return false; };
    virtual bool isTableCell() const { return false; };
    virtual bool isFieldset() const { return false; };
    virtual bool isGroup() const { return false; };
    
    virtual bool isChecked() const { return false; };
    virtual bool isEnabled() const { return false; };
    virtual bool isSelected() const { return false; };
    virtual bool isFocused() const { return false; };
    virtual bool isHovered() const { return false; };
    virtual bool isIndeterminate() const { return false; };
    virtual bool isLoaded() const { return false; };
    virtual bool isMultiSelect() const { return false; };
    virtual bool isOffScreen() const { return false; };
    virtual bool isPressed() const { return false; };
    virtual bool isReadOnly() const { return false; };
    virtual bool isVisited() const { return false; };

    virtual bool canSetFocusAttribute() const { return false; };
    virtual bool canSetTextRangeAttributes() const { return false; };
    virtual bool canSetValueAttribute() const { return false; };
    virtual bool canSetSelectedAttribute() const { return false; }
    virtual bool canSetSelectedChildrenAttribute() const { return false; }
    
    virtual bool hasIntValue() const { return false; };

    bool accessibilityShouldUseUniqueId() const { return true; };
    virtual bool accessibilityIsIgnored() const  { return true; };

    virtual int intValue() const;
    virtual float valueForRange() const { return 0.0f; }
    virtual float maxValueForRange() const { return 0.0f; }
    virtual float minValueForRange() const {return 0.0f; }
    virtual int layoutCount() const;
    static bool isARIAControl(AccessibilityRole);
    static bool isARIAInput(AccessibilityRole);
    unsigned axObjectID() const;
    
    virtual AccessibilityObject* doAccessibilityHitTest(const IntPoint&) const;
    virtual AccessibilityObject* focusedUIElement() const;
    virtual AccessibilityObject* firstChild() const;
    virtual AccessibilityObject* lastChild() const;
    virtual AccessibilityObject* previousSibling() const;
    virtual AccessibilityObject* nextSibling() const;
    virtual AccessibilityObject* parentObject() const;
    virtual AccessibilityObject* parentObjectUnignored() const;
    virtual AccessibilityObject* parentObjectIfExists() const;
    virtual AccessibilityObject* observableObject() const;
    virtual void linkedUIElements(AccessibilityChildrenVector&) const;
    virtual AccessibilityObject* titleUIElement() const;
    virtual AccessibilityRole ariaRoleAttribute() const;
    virtual bool isPresentationalChildOfAriaRole() const;
    virtual bool ariaRoleHasPresentationalChildren() const;

    virtual AccessibilityRole roleValue() const;
    virtual AXObjectCache* axObjectCache() const;
    
    virtual Element* anchorElement() const;
    virtual Element* actionElement() const;
    virtual IntRect boundingBoxRect() const;
    virtual IntRect elementRect() const;
    virtual IntSize size() const;
    IntPoint clickPoint() const;
    
    virtual KURL url() const;
    virtual PlainTextRange selectedTextRange() const;
    virtual VisibleSelection selection() const;
    unsigned selectionStart() const;
    unsigned selectionEnd() const;
    virtual String stringValue() const;
    virtual String ariaAccessiblityName(const String&) const;
    virtual String ariaLabeledByAttribute() const;
    virtual String title() const;
    virtual String ariaDescribedByAttribute() const;
    virtual String accessibilityDescription() const;
    virtual String helpText() const;
    virtual String textUnderElement() const;
    virtual String text() const;
    virtual int textLength() const;
    virtual PassRefPtr<Range> ariaSelectedTextDOMRange() const;
    virtual String selectedText() const;
    virtual const AtomicString& accessKey() const;
    const String& actionVerb() const;
    virtual Widget* widget() const;
    virtual Widget* widgetForAttachmentView() const;
    virtual Document* document() const { return 0; }
    virtual FrameView* topDocumentFrameView() const { return 0; }
    virtual FrameView* documentFrameView() const;

    void setAXObjectID(unsigned);
    virtual void setFocused(bool);
    virtual void setSelectedText(const String&);
    virtual void setSelectedTextRange(const PlainTextRange&);
    virtual void setValue(const String&);
    virtual void setSelected(bool);
    
    virtual void detach();
    virtual void makeRangeVisible(const PlainTextRange&);
    virtual bool press() const;
    bool performDefaultAction() const { return press(); }
    
    virtual void childrenChanged();
    virtual const AccessibilityChildrenVector& children() { return m_children; }
    virtual void addChildren();
    virtual bool canHaveChildren() const { return true; }
    virtual bool hasChildren() const { return m_haveChildren; };
    virtual void selectedChildren(AccessibilityChildrenVector&);
    virtual void visibleChildren(AccessibilityChildrenVector&);
    virtual bool shouldFocusActiveDescendant() const { return false; }
    virtual AccessibilityObject* activeDescendant() const { return 0; }    
    virtual void handleActiveDescendantChanged() { }

    virtual VisiblePositionRange visiblePositionRange() const;
    virtual VisiblePositionRange visiblePositionRangeForLine(unsigned) const;
    
    VisiblePositionRange visiblePositionRangeForUnorderedPositions(const VisiblePosition&, const VisiblePosition&) const;
    VisiblePositionRange positionOfLeftWord(const VisiblePosition&) const;
    VisiblePositionRange positionOfRightWord(const VisiblePosition&) const;
    VisiblePositionRange leftLineVisiblePositionRange(const VisiblePosition&) const;
    VisiblePositionRange rightLineVisiblePositionRange(const VisiblePosition&) const;
    VisiblePositionRange sentenceForPosition(const VisiblePosition&) const;
    VisiblePositionRange paragraphForPosition(const VisiblePosition&) const;
    VisiblePositionRange styleRangeForPosition(const VisiblePosition&) const;
    VisiblePositionRange visiblePositionRangeForRange(const PlainTextRange&) const;

    String stringForVisiblePositionRange(const VisiblePositionRange&) const;
    virtual IntRect boundsForVisiblePositionRange(const VisiblePositionRange&) const;    
    int lengthForVisiblePositionRange(const VisiblePositionRange&) const;
    virtual void setSelectedVisiblePositionRange(const VisiblePositionRange&) const;

    virtual VisiblePosition visiblePositionForPoint(const IntPoint&) const;
    VisiblePosition nextVisiblePosition(const VisiblePosition&) const;
    VisiblePosition previousVisiblePosition(const VisiblePosition&) const;
    VisiblePosition nextWordEnd(const VisiblePosition&) const;
    VisiblePosition previousWordStart(const VisiblePosition&) const;
    VisiblePosition nextLineEndPosition(const VisiblePosition&) const;
    VisiblePosition previousLineStartPosition(const VisiblePosition&) const;
    VisiblePosition nextSentenceEndPosition(const VisiblePosition&) const;
    VisiblePosition previousSentenceStartPosition(const VisiblePosition&) const;
    VisiblePosition nextParagraphEndPosition(const VisiblePosition&) const;
    VisiblePosition previousParagraphStartPosition(const VisiblePosition&) const;
    virtual VisiblePosition visiblePositionForIndex(unsigned indexValue, bool lastIndexOK) const;
    
    virtual VisiblePosition visiblePositionForIndex(int) const;
    virtual int indexForVisiblePosition(const VisiblePosition&) const;

    AccessibilityObject* accessibilityObjectForPosition(const VisiblePosition&) const;
    int lineForPosition(const VisiblePosition&) const;
    PlainTextRange plainTextRangeForVisiblePositionRange(const VisiblePositionRange&) const;
    virtual int index(const VisiblePosition&) const;

    virtual PlainTextRange doAXRangeForLine(unsigned) const;
    PlainTextRange doAXRangeForPosition(const IntPoint&) const;
    virtual PlainTextRange doAXRangeForIndex(unsigned) const;
    PlainTextRange doAXStyleRangeForIndex(unsigned) const;

    virtual String doAXStringForRange(const PlainTextRange&) const;
    virtual IntRect doAXBoundsForRange(const PlainTextRange&) const;

    unsigned doAXLineForIndex(unsigned);

#if HAVE(ACCESSIBILITY)
#if PLATFORM(GTK)
    AccessibilityObjectWrapper* wrapper() const;
    void setWrapper(AccessibilityObjectWrapper*);
#else
    AccessibilityObjectWrapper* wrapper() const { return m_wrapper.get(); }
    void setWrapper(AccessibilityObjectWrapper* wrapper) 
    {
        m_wrapper = wrapper;
    }
#endif
#endif

    // a platform-specific method for determining if an attachment is ignored
#if HAVE(ACCESSIBILITY)
    bool accessibilityIgnoreAttachment() const;
#else
    bool accessibilityIgnoreAttachment() const { return true; }
#endif

    // allows for an AccessibilityObject to update its render tree or perform
    // other operations update type operations
    virtual void updateBackingStore();
    
protected:
    unsigned m_id;
    AccessibilityChildrenVector m_children;
    mutable bool m_haveChildren;
    
    virtual void clearChildren();
    virtual bool isDetached() const { return true; }

#if PLATFORM(MAC)
    RetainPtr<AccessibilityObjectWrapper> m_wrapper;
#elif PLATFORM(WIN)
    COMPtr<AccessibilityObjectWrapper> m_wrapper;
#elif PLATFORM(GTK)
    AtkObject* m_wrapper;
#elif PLATFORM(CHROMIUM)
    RefPtr<AccessibilityObjectWrapper> m_wrapper;
#endif
};

} // namespace WebCore

#endif // AccessibilityObject_h