[wp-trac] [WordPress Trac] #37980: Don't attach events to customizer section headings with cannot-expand class

[WordPress Trac]

#37980: Don't attach events to customizer section headings with cannot-expand class
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 Reporter:  celloexpressions            |       Owner:  celloexpressions
     Type:  defect (bug)                |      Status:  reviewing
 Priority:  normal                      |   Milestone:  4.7
Component:  Customize                   |     Version:  4.3
 Severity:  normal                      |  Resolution:
 Keywords:  good-first-bug needs-patch  |     Focuses:  javascript
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Comment (by celloexpressions):

 Cannot-expand headings should not be focusable; if there is a focusable
 element within them, it would be a distinct link or button element that's
 separate. Not applying the cannot-expand styling when the element is
 focusable is a good way to ensure that developers remember to remove the
 `tabindex=0` from section markup that's copied from expandable core
 sections. On the other hand, it could look broken for users, but if we
 also unstyle it on focus, the accessible experience is even worse. Anyone
 else have thoughts here?

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Ticket URL: <https://core.trac.wordpress.org/ticket/37980#comment:7>
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