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29 #ifndef AXNodeObject_h
30 #define AXNodeObject_h
32 #include "core/accessibility/AXObject.h"
33 #include "platform/geometry/LayoutRect.h"
34 #include "wtf/Forward.h"
43 class HTMLAnchorElement;
44 class HTMLAreaElement;
46 class HTMLLabelElement;
48 class HTMLSelectElement;
53 class RenderTextControl;
55 class VisibleSelection;
58 class AXNodeObject : public AXObject {
60 explicit AXNodeObject(Node*);
63 static PassRefPtr<AXNodeObject> create(Node*);
64 virtual ~AXNodeObject();
68 AccessibilityRole m_ariaRole;
74 virtual bool computeAccessibilityIsIgnored() const OVERRIDE;
75 virtual AccessibilityRole determineAccessibilityRole();
77 String accessibilityDescriptionForElements(Vector<Element*> &elements) const;
78 void alterSliderValue(bool increase);
79 String ariaAccessibilityDescription() const;
80 void ariaLabeledByElements(Vector<Element*>& elements) const;
81 void changeValueByStep(bool increase);
82 AccessibilityRole determineAriaRoleAttribute() const;
83 void elementsFromAttribute(Vector<Element*>& elements, const QualifiedName&) const;
84 bool hasContentEditableAttributeSet() const;
85 bool isDescendantOfBarrenParent() const;
86 // This returns true if it's focusable but it's not content editable and it's not a control or ARIA control.
87 bool isGenericFocusableElement() const;
88 HTMLLabelElement* labelForElement(Element*) const;
89 AXObject* menuButtonForMenu() const;
90 Element* menuItemElementForMenu() const;
91 Element* mouseButtonListener() const;
92 AccessibilityRole remapAriaRoleDueToParent(AccessibilityRole) const;
93 bool isNativeCheckboxOrRadio() const;
95 AXObject* correspondingControlForLabelElement() const;
96 HTMLLabelElement* labelElementContainer() const;
99 // Overridden from AXObject.
102 virtual void init() OVERRIDE;
103 virtual void detach() OVERRIDE;
104 virtual bool isDetached() const OVERRIDE { return !m_node; }
105 virtual bool isAXNodeObject() const OVERRIDE FINAL { return true; }
107 // Check object role or purpose.
108 virtual bool isAnchor() const OVERRIDE FINAL;
109 virtual bool isControl() const OVERRIDE;
110 virtual bool isEmbeddedObject() const OVERRIDE FINAL;
111 virtual bool isFieldset() const OVERRIDE FINAL;
112 virtual bool isHeading() const OVERRIDE FINAL;
113 virtual bool isHovered() const OVERRIDE FINAL;
114 virtual bool isImage() const OVERRIDE FINAL;
115 bool isImageButton() const;
116 virtual bool isInputImage() const OVERRIDE FINAL;
117 virtual bool isLink() const OVERRIDE FINAL;
118 virtual bool isMenu() const OVERRIDE FINAL;
119 virtual bool isMenuButton() const OVERRIDE FINAL;
120 virtual bool isMultiSelectable() const OVERRIDE;
121 bool isNativeImage() const;
122 virtual bool isNativeTextControl() const OVERRIDE FINAL;
123 virtual bool isNonNativeTextControl() const OVERRIDE FINAL;
124 virtual bool isPasswordField() const OVERRIDE FINAL;
125 virtual bool isProgressIndicator() const OVERRIDE;
126 virtual bool isSlider() const OVERRIDE;
128 // Check object state.
129 virtual bool isChecked() const OVERRIDE FINAL;
130 virtual bool isClickable() const OVERRIDE FINAL;
131 virtual bool isEnabled() const OVERRIDE;
132 virtual bool isIndeterminate() const OVERRIDE FINAL;
133 virtual bool isPressed() const OVERRIDE FINAL;
134 virtual bool isReadOnly() const OVERRIDE;
135 virtual bool isRequired() const OVERRIDE FINAL;
137 // Check whether certain properties can be modified.
138 virtual bool canSetFocusAttribute() const OVERRIDE;
139 virtual bool canSetValueAttribute() const OVERRIDE;
141 // Properties of static elements.
142 virtual bool canvasHasFallbackContent() const OVERRIDE FINAL;
143 virtual bool exposesTitleUIElement() const OVERRIDE;
144 virtual int headingLevel() const OVERRIDE FINAL;
145 virtual unsigned hierarchicalLevel() const OVERRIDE FINAL;
146 virtual String text() const OVERRIDE;
147 virtual AXObject* titleUIElement() const OVERRIDE;
149 // Properties of interactive elements.
150 virtual AccessibilityButtonState checkboxOrRadioValue() const OVERRIDE FINAL;
151 virtual void colorValue(int& r, int& g, int& b) const OVERRIDE FINAL;
152 virtual String valueDescription() const OVERRIDE;
153 virtual float valueForRange() const OVERRIDE;
154 virtual float maxValueForRange() const OVERRIDE;
155 virtual float minValueForRange() const OVERRIDE;
156 virtual String stringValue() const OVERRIDE;
159 virtual String ariaDescribedByAttribute() const OVERRIDE FINAL;
160 virtual String ariaLabeledByAttribute() const OVERRIDE FINAL;
161 virtual AccessibilityRole ariaRoleAttribute() const OVERRIDE FINAL;
163 // Accessibility Text.
164 virtual String textUnderElement() const OVERRIDE;
166 // Accessibility Text - (To be deprecated).
167 virtual String accessibilityDescription() const OVERRIDE;
168 virtual String title() const OVERRIDE;
169 virtual String helpText() const OVERRIDE;
171 // Location and click point in frame-relative coordinates.
172 virtual LayoutRect elementRect() const OVERRIDE;
174 // High-level accessibility tree access.
175 virtual AXObject* parentObject() const OVERRIDE;
176 virtual AXObject* parentObjectIfExists() const OVERRIDE;
178 // Low-level accessibility tree exploration.
179 virtual AXObject* firstChild() const OVERRIDE;
180 virtual AXObject* nextSibling() const OVERRIDE;
181 virtual void addChildren() OVERRIDE;
182 virtual bool canHaveChildren() const OVERRIDE;
183 void addChild(AXObject*);
184 void insertChild(AXObject*, unsigned index);
186 // DOM and Render tree access.
187 virtual Element* actionElement() const OVERRIDE FINAL;
188 virtual Element* anchorElement() const OVERRIDE;
189 virtual Document* document() const OVERRIDE;
190 virtual Node* node() const OVERRIDE { return m_node; }
192 // Modify or take an action on an object.
193 virtual void setFocused(bool) OVERRIDE FINAL;
194 virtual void increment() OVERRIDE FINAL;
195 virtual void decrement() OVERRIDE FINAL;
197 // Notifications that this object may have changed.
198 virtual void childrenChanged() OVERRIDE;
199 virtual void selectionChanged() OVERRIDE FINAL;
200 virtual void textChanged() OVERRIDE;
201 virtual void updateAccessibilityRole() OVERRIDE FINAL;
206 String alternativeTextForWebArea() const;
207 void alternativeText(Vector<AccessibilityText>&) const;
208 void ariaLabeledByText(Vector<AccessibilityText>&) const;
209 void changeValueByPercent(float percentChange);
210 float stepValueForRange() const;
213 DEFINE_AX_OBJECT_TYPE_CASTS(AXNodeObject, isAXNodeObject());
215 } // namespace WebCore
217 #endif // AXNodeObject_h