| /* |
| * Copyright (C) 2012, Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef AccessibilityNodeObject_h |
| #define AccessibilityNodeObject_h |
| |
| #include "AccessibilityObject.h" |
| #include "LayoutRect.h" |
| #include <wtf/Forward.h> |
| |
| namespace WebCore { |
| |
| class AXObjectCache; |
| class Element; |
| class Frame; |
| class FrameView; |
| class HitTestResult; |
| class HTMLAnchorElement; |
| class HTMLAreaElement; |
| class HTMLElement; |
| class HTMLLabelElement; |
| class HTMLMapElement; |
| class HTMLSelectElement; |
| class IntPoint; |
| class IntSize; |
| class Node; |
| class RenderListBox; |
| class RenderTextControl; |
| class RenderView; |
| class VisibleSelection; |
| class Widget; |
| |
| class AccessibilityNodeObject : public AccessibilityObject { |
| protected: |
| explicit AccessibilityNodeObject(Node*); |
| public: |
| static PassRefPtr<AccessibilityNodeObject> create(Node*); |
| virtual ~AccessibilityNodeObject(); |
| |
| virtual void init(); |
| |
| virtual bool isAccessibilityNodeObject() const { return true; } |
| |
| virtual bool canvasHasFallbackContent() const; |
| |
| virtual bool isAnchor() const; |
| virtual bool isControl() const; |
| virtual bool isFieldset() const; |
| virtual bool isGroup() const; |
| virtual bool isHeading() const; |
| virtual bool isHovered() const; |
| virtual bool isImage() const; |
| virtual bool isImageButton() const; |
| virtual bool isInputImage() const; |
| virtual bool isLink() const; |
| virtual bool isMenu() const; |
| virtual bool isMenuBar() const; |
| virtual bool isMenuButton() const; |
| virtual bool isMenuItem() const; |
| virtual bool isMenuRelated() const; |
| virtual bool isMultiSelectable() const; |
| virtual bool isNativeCheckboxOrRadio() const; |
| virtual bool isNativeImage() const; |
| virtual bool isNativeTextControl() const; |
| virtual bool isPasswordField() const; |
| virtual bool isProgressIndicator() const; |
| virtual bool isSearchField() const; |
| virtual bool isSlider() const; |
| |
| virtual bool isChecked() const; |
| virtual bool isEnabled() const; |
| virtual bool isIndeterminate() const; |
| virtual bool isPressed() const; |
| virtual bool isReadOnly() const; |
| virtual bool isRequired() const; |
| virtual bool supportsRequiredAttribute() const; |
| |
| virtual bool canSetSelectedAttribute() const OVERRIDE; |
| |
| void setNode(Node*); |
| virtual Node* node() const { return m_node; } |
| virtual Document* document() const; |
| |
| virtual bool canSetFocusAttribute() const; |
| virtual int headingLevel() const; |
| |
| virtual String valueDescription() const; |
| virtual float valueForRange() const; |
| virtual float maxValueForRange() const; |
| virtual float minValueForRange() const; |
| virtual float stepValueForRange() const; |
| |
| virtual AccessibilityObject* selectedRadioButton(); |
| virtual AccessibilityObject* selectedTabItem(); |
| virtual AccessibilityButtonState checkboxOrRadioValue() const; |
| |
| virtual unsigned hierarchicalLevel() const; |
| virtual String textUnderElement(AccessibilityTextUnderElementMode = AccessibilityTextUnderElementMode()) const; |
| virtual String accessibilityDescription() const; |
| virtual String helpText() const; |
| virtual String title() const; |
| virtual String text() const; |
| virtual String stringValue() const; |
| virtual void colorValue(int& r, int& g, int& b) const; |
| virtual String ariaLabeledByAttribute() const; |
| |
| virtual Element* actionElement() const; |
| Element* mouseButtonListener() const; |
| virtual Element* anchorElement() const; |
| AccessibilityObject* menuForMenuButton() const; |
| |
| virtual void changeValueByPercent(float percentChange); |
| |
| virtual AccessibilityObject* firstChild() const; |
| virtual AccessibilityObject* lastChild() const; |
| virtual AccessibilityObject* previousSibling() const; |
| virtual AccessibilityObject* nextSibling() const; |
| virtual AccessibilityObject* parentObject() const; |
| virtual AccessibilityObject* parentObjectIfExists() const; |
| |
| virtual void detach(); |
| virtual void childrenChanged(); |
| virtual void updateAccessibilityRole(); |
| |
| virtual void increment(); |
| virtual void decrement(); |
| |
| virtual LayoutRect elementRect() const; |
| |
| protected: |
| AccessibilityRole m_ariaRole; |
| bool m_childrenDirty; |
| mutable AccessibilityRole m_roleForMSAA; |
| #ifndef NDEBUG |
| bool m_initialized; |
| #endif |
| |
| virtual bool isDetached() const { return !m_node; } |
| |
| virtual AccessibilityRole determineAccessibilityRole(); |
| virtual void addChildren(); |
| virtual void addChild(AccessibilityObject*); |
| virtual void insertChild(AccessibilityObject*, unsigned index); |
| |
| virtual bool canHaveChildren() const; |
| AccessibilityRole ariaRoleAttribute() const; |
| AccessibilityRole determineAriaRoleAttribute() const; |
| AccessibilityRole remapAriaRoleDueToParent(AccessibilityRole) const; |
| bool hasContentEditableAttributeSet() const; |
| virtual bool isDescendantOfBarrenParent() const; |
| void alterSliderValue(bool increase); |
| void changeValueByStep(bool increase); |
| // This returns true if it's focusable but it's not content editable and it's not a control or ARIA control. |
| bool isGenericFocusableElement() const; |
| HTMLLabelElement* labelForElement(Element*) const; |
| String ariaAccessibilityDescription() const; |
| void ariaLabeledByElements(Vector<Element*>& elements) const; |
| String accessibilityDescriptionForElements(Vector<Element*> &elements) const; |
| void elementsFromAttribute(Vector<Element*>& elements, const QualifiedName&) const; |
| virtual LayoutRect boundingBoxRect() const; |
| String ariaDescribedByAttribute() const; |
| |
| Element* menuElementForMenuButton() const; |
| Element* menuItemElementForMenu() const; |
| AccessibilityObject* menuButtonForMenu() const; |
| |
| private: |
| Node* m_node; |
| |
| virtual void accessibilityText(Vector<AccessibilityText>&); |
| void titleElementText(Vector<AccessibilityText>&); |
| void alternativeText(Vector<AccessibilityText>&) const; |
| void visibleText(Vector<AccessibilityText>&) const; |
| void helpText(Vector<AccessibilityText>&) const; |
| String alternativeTextForWebArea() const; |
| void ariaLabeledByText(Vector<AccessibilityText>&) const; |
| virtual bool computeAccessibilityIsIgnored() const; |
| }; |
| |
| inline AccessibilityNodeObject* toAccessibilityNodeObject(AccessibilityObject* object) |
| { |
| ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isAccessibilityNodeObject()); |
| return static_cast<AccessibilityNodeObject*>(object); |
| } |
| |
| inline const AccessibilityNodeObject* toAccessibilityNodeObject(const AccessibilityObject* object) |
| { |
| ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isAccessibilityNodeObject()); |
| return static_cast<const AccessibilityNodeObject*>(object); |
| } |
| |
| // This will catch anyone doing an unnecessary cast. |
| void toAccessibilityNodeObject(const AccessibilityNodeObject*); |
| |
| } // namespace WebCore |
| |
| #endif // AccessibilityNodeObject_h |