I have updated the accessibility extension to display all WAI-ARIA roles.
Author: Gez Lemon
ARIA introduces the
role attribute to help define widgets, such as a tree, and define page structure, such as the navigation section. The accessibility toolbar displays the roles defined in a document in a new tab, along with the element the role is defined on, the parent nodes, and the markup fragment. The following is example output from running the extension.
At the moment, there isn't a check to ensure that the role provided is a valid role. The next version of this toolbar will highlight invalid role names.