Boolean properties for Accessibility Object Model Phase 1

third_party/WebKit/Source/modules/accessibility/AXObjectImpl.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 36 matching lines @@
 
 class AXObjectImpl;
 class AXObjectCacheImpl;
 class Element;
 class FrameView;
 class IntPoint;
 class Node;
 class LayoutObject;
 class ScrollableArea;
 
+enum class AOMBooleanProperty;
 enum class AOMStringProperty;
 
 typedef unsigned AXID;
 
 enum AccessibilityRole {
   kUnknownRole = 0,
   kAbbrRole,  // No mapping to ARIA role.
   kAlertDialogRole,
   kAlertRole,
   kAnchorRole,      // No mapping to ARIA role.
@@ skipping 534 matching lines @@
   // cache.
   AXObjectCacheImpl& AxObjectCache() const {
     DCHECK(ax_object_cache_);
     return *ax_object_cache_;
   }
 
   AXID AxObjectID() const { return 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;
+  bool HasAOMPropertyOrARIAAttribute(AOMBooleanProperty, bool& result) const;
+  bool AOMPropertyOrARIAAttributeIsTrue(AOMBooleanProperty) const;
+  bool AOMPropertyOrARIAAttributeIsFalse(AOMBooleanProperty) const;
 
   virtual void GetSparseAXAttributes(AXSparseAttributeClient&) const {}
 
   // Determine subclass type.
   virtual bool IsAXNodeObject() const { return false; }
   virtual bool IsAXLayoutObject() const { return false; }
   virtual bool IsAXInlineTextBox() const { return false; }
   virtual bool IsAXListBox() const { return false; }
   virtual bool IsAXListBoxOption() const { return false; }
   virtual bool IsAXRadioInput() const { return false; }
@@ skipping 353 matching lines @@
   virtual bool NeedsToUpdateChildren() const { return false; }
   virtual void SetNeedsToUpdateChildren() {}
   virtual void ClearChildren();
   virtual void DetachFromParent() { parent_ = 0; }
   virtual AXObjectImpl* ScrollBar(AccessibilityOrientation) { return 0; }
 
   // Properties of the object's owning document or page.
   virtual double EstimatedLoadingProgress() const { return 0; }
 
   // DOM and layout tree access.
-  virtual Node* GetNode() const { return 0; }
-  virtual LayoutObject* GetLayoutObject() const { return 0; }
+  virtual Node* GetNode() const { return nullptr; }
+  virtual Element* GetElement() const;  // Same as GetNode, if it's an Element.
+  virtual LayoutObject* GetLayoutObject() const { return nullptr; }
   virtual Document* GetDocument() const;
   virtual FrameView* DocumentFrameView() const;
-  virtual Element* AnchorElement() const { return 0; }
-  virtual Element* ActionElement() const { return 0; }
+  virtual Element* AnchorElement() const { return nullptr; }
+  virtual Element* ActionElement() const { return nullptr; }
   String Language() const;
   bool HasAttribute(const QualifiedName&) const;
   const AtomicString& GetAttribute(const QualifiedName&) const;
 
   // Methods that retrieve or manipulate the current selection.
 
   // Get the current selection from anywhere in the accessibility tree.
   virtual AXRange Selection() const { return AXRange(); }
   // Gets only the start and end offsets of the selection computed using the
   // current object as the starting point. Returns a null selection if there is
@@ skipping 135 matching lines @@
 
 DEFINE_TYPE_CASTS(AXObjectImpl, AXObject, obj, true, true);
 
 #define DEFINE_AX_OBJECT_TYPE_CASTS(thisType, predicate)               \
   DEFINE_TYPE_CASTS(thisType, AXObjectImpl, object, object->predicate, \
                     object.predicate)
 
 }  // namespace blink
 
 #endif  // AXObjectImpl_h