[wp-trac] [WordPress Trac] #33544: Post meta box toggles not accessible.

[WordPress Trac]

#33544: Post meta box toggles not accessible.
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 Reporter:  joedolson                          |      Owner:
     Type:  defect (bug)                       |     Status:  new
 Priority:  high                               |  Milestone:  Awaiting
Component:  Posts, Post Types                  |  Review
 Severity:  major                              |    Version:
  Focuses:  ui, accessibility, administration  |   Keywords:  has-patch
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 The handlediv buttons used for toggling post metabox panels are not
 accessible for several reasons:

 1) They do not have a label.
 2) They are not focusable elements.
 3) They don't announce their current state.

 The attached patch changes the <div> into a <button>, adds a screen-
 reader-text hidden label which provides context, uses aria-expanded to
 indicate current state, and toggles that state based on the state of the
 postbox.

 One of the consequences of this issue is that if any metabox gets closed
 (by another user, for example), then a screen reader user will never be
 able to access that panel. As such, this is a major issue.

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Ticket URL: <https://core.trac.wordpress.org/ticket/33544>
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