[wp-trac] [WordPress Trac] #22058: Improve custom background properties UI

[WordPress Trac]

#22058: Improve custom background properties UI
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 Reporter:  grapplerulrich           |       Owner:  cdog
     Type:  enhancement              |      Status:  assigned
 Priority:  normal                   |   Milestone:  4.7
Component:  Customize                |     Version:  3.4.2
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-refresh  |     Focuses:  ui, accessibility,
  has-screenshots                    |  administration
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Comment (by celloexpressions):

 The multi-select control isn't keyboard-accessible currently. I think
 adding `tabindex="0"` to the input element, and then providing a visual
 focus style for each radio input styles as a grouped button there that
 matches the hover style would probably be best. @afercia can you advise
 whether the implementation in the patch works otherwise for accessibility?

 Everything else in the patch looks ready to commit.

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Ticket URL: <https://core.trac.wordpress.org/ticket/22058#comment:95>
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