Reland: Made content editables report the caret and text selection by treating them as text controls

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 391 matching lines @@
     virtual bool isProgressIndicator() const { return false; }
     bool isRadioButton() const { return roleValue() == RadioButtonRole; }
     bool isScrollbar() const { return roleValue() == ScrollBarRole; }
     virtual bool isSlider() const { return false; }
     virtual bool isSpinButton() const { return roleValue() == SpinButtonRole; }
     virtual bool isSpinButtonPart() const { return false; }
     bool isTabItem() const { return roleValue() == TabRole; }
     virtual bool isTableCell() const { return false; }
     virtual bool isTableRow() const { return false; }
     virtual bool isTableCol() const { return false; }
+    bool hasContentEditableAttributeSet() const;

[dmazzoni, 2015/04/10 21:23:24]

Instead of moving hasContentEditableAttributeSet to AXObject, how about moving
the implementation of isTextControl to AXNodeObject?

There are some AXObjects that aren't nodes. Code that checks the attributes of
an HTML element should be in AXNodeObject or a subclass of that, not on
AXObject.

     bool isTextControl() const;
     bool isTree() const { return roleValue() == TreeRole; }
     bool isTreeItem() const { return roleValue() == TreeItemRole; }
     bool isWebArea() const { return roleValue() == WebAreaRole; }
 
     // Check object state.
     virtual bool isChecked() const { return false; }
     virtual bool isClickable() const;
     virtual bool isCollapsed() const { return false; }
     virtual bool isEnabled() const { return false; }
@@ skipping 294 matching lines @@
     static bool includesARIAWidgetRole(const String&);
     static bool hasInteractiveARIAAttribute(const Element&);
 };
 
 #define DEFINE_AX_OBJECT_TYPE_CASTS(thisType, predicate) \
     DEFINE_TYPE_CASTS(thisType, AXObject, object, object->predicate, object.predicate)
 
 } // namespace blink
 
 #endif // AXObject_h