--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/accessibility/AccessibilityRenderObject.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,314 @@
+/*
+ * Copyright (C) 2008 Apple 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 AccessibilityRenderObject_h
+#define AccessibilityRenderObject_h
+
+#include "AccessibilityObject.h"
+#include "RenderObject.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 String;
+class Widget;
+    
+class AccessibilityRenderObject : public AccessibilityObject {
+protected:
+    AccessibilityRenderObject(RenderObject*);
+public:
+    static PassRefPtr<AccessibilityRenderObject> create(RenderObject*);
+    virtual ~AccessibilityRenderObject();
+    
+    bool isAccessibilityRenderObject() const { return true; }
+    
+    virtual bool isAnchor() const;
+    virtual bool isAttachment() const;
+    virtual bool isHeading() const;
+    virtual bool isLink() const;
+    virtual bool isImageButton() const;
+    virtual bool isImage() const;
+    virtual bool isNativeImage() const;
+    virtual bool isPasswordField() const;
+    virtual bool isTextControl() const;
+    virtual bool isNativeTextControl() const;
+    virtual bool isWebArea() const;
+    virtual bool isFileUploadButton() const;
+    virtual bool isInputImage() const;
+    virtual bool isProgressIndicator() const;
+    virtual bool isSlider() const;
+    virtual bool isMenuRelated() const;
+    virtual bool isMenu() const;
+    virtual bool isMenuBar() const;
+    virtual bool isMenuButton() const;
+    virtual bool isMenuItem() const;
+    virtual bool isControl() const;
+    virtual bool isFieldset() const;
+    virtual bool isGroup() const;
+
+    virtual bool isEnabled() const;
+    virtual bool isSelected() const;
+    virtual bool isFocused() const;
+    virtual bool isChecked() const;
+    virtual bool isHovered() const;
+    virtual bool isIndeterminate() const;
+    virtual bool isLoaded() const;
+    virtual bool isMultiSelectable() const;
+    virtual bool isOffScreen() const;
+    virtual bool isPressed() const;
+    virtual bool isReadOnly() const;
+    virtual bool isVisited() const;        
+    virtual bool isRequired() const;
+    virtual bool isLinked() const;
+    virtual bool isExpanded() const;
+    virtual void setIsExpanded(bool);
+
+    virtual bool canSetFocusAttribute() const;
+    virtual bool canSetTextRangeAttributes() const;
+    virtual bool canSetValueAttribute() const;
+    virtual bool canSetExpandedAttribute() const;
+
+    virtual void setAccessibleName(String&);
+    
+    // Provides common logic used by all elements when determining isIgnored.
+    AccessibilityObjectInclusion accessibilityIsIgnoredBase() const;
+    virtual bool accessibilityIsIgnored() const;
+    
+    virtual int headingLevel() const;
+    virtual int intValue() const;
+    virtual String valueDescription() const;
+    virtual float valueForRange() const;
+    virtual float maxValueForRange() const;
+    virtual float minValueForRange() const;
+    virtual AccessibilityObject* selectedRadioButton();
+    virtual AccessibilityObject* selectedTabItem();
+    virtual int layoutCount() const;
+    virtual double estimatedLoadingProgress() 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* parentObjectIfExists() const;
+    virtual AccessibilityObject* observableObject() const;
+    virtual void linkedUIElements(AccessibilityChildrenVector&) const;
+    virtual bool exposesTitleUIElement() const;
+    virtual AccessibilityObject* titleUIElement() const;
+    virtual AccessibilityObject* correspondingControlForLabelElement() const;
+    virtual AccessibilityObject* correspondingLabelForControlElement() const;
+
+    virtual void ariaOwnsElements(AccessibilityChildrenVector&) const;
+    virtual bool supportsARIAOwns() const;
+    virtual AccessibilityRole ariaRoleAttribute() const;
+    virtual bool isPresentationalChildOfAriaRole() const;
+    virtual bool ariaRoleHasPresentationalChildren() const;
+    void updateAccessibilityRole();
+    
+    virtual AXObjectCache* axObjectCache() const;
+    
+    virtual Element* actionElement() const;
+    Element* mouseButtonListener() const;
+    FrameView* frameViewIfRenderView() const;
+    virtual Element* anchorElement() const;
+    AccessibilityObject* menuForMenuButton() const;
+    AccessibilityObject* menuButtonForMenu() const;
+    
+    virtual IntRect boundingBoxRect() const;
+    virtual IntRect elementRect() const;
+    virtual IntSize size() const;
+    virtual IntPoint clickPoint() const;
+    
+    void setRenderer(RenderObject* renderer) { m_renderer = renderer; }
+    RenderObject* renderer() const { return m_renderer; }
+    virtual Node* node() const;
+
+    RenderView* topRenderer() const;
+    RenderTextControl* textControl() const;
+    Document* document() const;
+    FrameView* topDocumentFrameView() const;  
+    HTMLLabelElement* labelElementContainer() const;
+    
+    virtual KURL url() const;
+    virtual PlainTextRange selectedTextRange() const;
+    virtual VisibleSelection selection() const;
+    virtual String stringValue() 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;
+    virtual const String& actionVerb() const;
+    virtual Widget* widget() const;
+    virtual Widget* widgetForAttachmentView() const;
+    virtual void getDocumentLinks(AccessibilityChildrenVector&);
+    virtual FrameView* documentFrameView() const;
+    virtual unsigned hierarchicalLevel() const;
+
+    virtual const AccessibilityChildrenVector& children();
+    virtual void clearChildren();
+    virtual void updateChildrenIfNecessary();
+    
+    virtual void setFocused(bool);
+    virtual void setSelectedTextRange(const PlainTextRange&);
+    virtual void setValue(const String&);
+    virtual void setSelected(bool);
+    virtual void setSelectedRows(AccessibilityChildrenVector&);
+    virtual void changeValueByPercent(float percentChange);
+    virtual AccessibilityOrientation orientation() const;
+    virtual void increment();
+    virtual void decrement();
+    
+    virtual void detach();
+    virtual void childrenChanged();
+    virtual void contentChanged();
+    virtual void addChildren();
+    virtual bool canHaveChildren() const;
+    virtual void selectedChildren(AccessibilityChildrenVector&);
+    virtual void visibleChildren(AccessibilityChildrenVector&);
+    virtual void tabChildren(AccessibilityChildrenVector&);
+    virtual bool shouldFocusActiveDescendant() const;
+    virtual AccessibilityObject* activeDescendant() const;
+    virtual void handleActiveDescendantChanged();
+    virtual void handleAriaExpandedChanged();
+    
+    virtual VisiblePositionRange visiblePositionRange() const;
+    virtual VisiblePositionRange visiblePositionRangeForLine(unsigned) const;
+    virtual IntRect boundsForVisiblePositionRange(const VisiblePositionRange&) const;
+    virtual void setSelectedVisiblePositionRange(const VisiblePositionRange&) const;
+    virtual bool supportsARIAFlowTo() const;
+    virtual void ariaFlowToElements(AccessibilityChildrenVector&) const;
+    virtual bool ariaHasPopup() const;
+
+    virtual bool supportsARIADropping() const;
+    virtual bool supportsARIADragging() const;
+    virtual bool isARIAGrabbed();
+    virtual void setARIAGrabbed(bool);
+    virtual void determineARIADropEffects(Vector<String>&);
+    
+    virtual VisiblePosition visiblePositionForPoint(const IntPoint&) const;
+    virtual VisiblePosition visiblePositionForIndex(unsigned indexValue, bool lastIndexOK) const;    
+    virtual int index(const VisiblePosition&) const;
+
+    virtual VisiblePosition visiblePositionForIndex(int) const;
+    virtual int indexForVisiblePosition(const VisiblePosition&) const;
+    
+    virtual PlainTextRange doAXRangeForLine(unsigned) const;
+    virtual PlainTextRange doAXRangeForIndex(unsigned) const;
+    
+    virtual String doAXStringForRange(const PlainTextRange&) const;
+    virtual IntRect doAXBoundsForRange(const PlainTextRange&) const;
+    
+    virtual void updateBackingStore();
+
+    virtual String stringValueForMSAA() const;
+    virtual String stringRoleForMSAA() const;
+    virtual String nameForMSAA() const;
+    virtual String descriptionForMSAA() const;
+    virtual AccessibilityRole roleValueForMSAA() const;
+
+protected:
+    RenderObject* m_renderer;
+    AccessibilityRole m_ariaRole;
+    mutable bool m_childrenDirty;
+    
+    void setRenderObject(RenderObject* renderer) { m_renderer = renderer; }
+    void ariaLabeledByElements(Vector<Element*>& elements) const;
+    bool needsToUpdateChildren() const { return m_childrenDirty; }
+    
+    virtual bool isDetached() const { return !m_renderer; }
+
+private:
+    void ariaListboxSelectedChildren(AccessibilityChildrenVector&);
+    void ariaListboxVisibleChildren(AccessibilityChildrenVector&);
+    bool ariaIsHidden() const;
+    bool isDescendantOfBarrenParent() const;
+    bool isAllowedChildOfTree() const;
+    bool hasTextAlternative() const;
+    String positionalDescriptionForMSAA() const;
+
+    Element* menuElementForMenuButton() const;
+    Element* menuItemElementForMenu() const;
+    AccessibilityRole determineAccessibilityRole();
+    AccessibilityRole determineAriaRoleAttribute() const;
+
+    bool isTabItemSelected() const;
+    IntRect checkboxOrRadioRect() const;
+    void addRadioButtonGroupMembers(AccessibilityChildrenVector& linkedUIElements) const;
+    AccessibilityObject* internalLinkElement() const;
+    AccessibilityObject* accessibilityImageMapHitTest(HTMLAreaElement*, const IntPoint&) const;
+    AccessibilityObject* accessibilityParentForImageMap(HTMLMapElement* map) const;
+    bool renderObjectIsObservable(RenderObject*) const;
+    
+    void ariaSelectedRows(AccessibilityChildrenVector&);
+    
+    bool elementAttributeValue(const QualifiedName&) const;
+    void setElementAttributeValue(const QualifiedName&, bool);
+    
+    String accessibilityDescriptionForElements(Vector<Element*> &elements) const;
+    void elementsFromAttribute(Vector<Element*>& elements, const QualifiedName& name) const;
+    
+    virtual const AtomicString& ariaLiveRegionStatus() const;
+    virtual const AtomicString& ariaLiveRegionRelevant() const;
+    virtual bool ariaLiveRegionAtomic() const;
+    virtual bool ariaLiveRegionBusy() const;    
+    
+    bool inheritsPresentationalRole() const;
+    void setNeedsToUpdateChildren() const { m_childrenDirty = true; }
+    
+    mutable AccessibilityRole m_roleForMSAA;
+};
+    
+} // namespace WebCore
+
+#endif // AccessibilityRenderObject_h