Re-land: Initial skeleton of Accessibility Object Model Phase 1

third_party/WebKit/Source/modules/accessibility/AXObject.h

 /*
  * Copyright (C) 2008, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * 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.
@@ skipping 35 matching lines @@
 
 class AXObject;
 class AXObjectCacheImpl;
 class Element;
 class FrameView;
 class IntPoint;
 class Node;
 class LayoutObject;
 class ScrollableArea;
 
+enum class AOMStringProperty;
+
 typedef unsigned AXID;
 
 enum AccessibilityRole {
   UnknownRole = 0,
   AbbrRole,  // No mapping to ARIA role.
   AlertDialogRole,
   AlertRole,
   AnnotationRole,  // No mapping to ARIA role.
   ApplicationRole,
   ArticleRole,
@@ skipping 526 matching lines @@
 
   // The AXObjectCacheImpl that owns this object, and its unique ID within this
   // cache.
   AXObjectCacheImpl& axObjectCache() const {
     ASSERT(m_axObjectCache);
     return *m_axObjectCache;
   }
 
   AXID axObjectID() const { return m_id; }
 
+  // Wrappers that retrieve either an Accessibility Object Model property,
+  // or the equivalent ARIA attribute, in that order.
+  // TODO(dmazzoni): Add equivalents for other types of properties besides
+  // just strings.
+  const AtomicString& getAOMPropertyOrARIAAttribute(AOMStringProperty) const;
+
   virtual void getSparseAXAttributes(AXSparseAttributeClient&) const {}
 
   // Determine subclass type.
   virtual bool isAXNodeObject() const { return false; }
   virtual bool isAXLayoutObject() const { return false; }
   virtual bool isAXListBox() const { return false; }
   virtual bool isAXListBoxOption() const { return false; }
   virtual bool isAXRadioInput() const { return false; }
   virtual bool isAXSVGRoot() const { return false; }
 
@@ skipping 498 matching lines @@
   static unsigned s_numberOfLiveAXObjects;
 };
 
 #define DEFINE_AX_OBJECT_TYPE_CASTS(thisType, predicate)           \
   DEFINE_TYPE_CASTS(thisType, AXObject, object, object->predicate, \
                     object.predicate)
 
 }  // namespace blink
 
 #endif  // AXObject_h