[wp-trac] [WordPress Trac] #30850: Audio/video previews for media controls in the Customizer

[WordPress Trac]

#30850: Audio/video previews for media controls in the Customizer
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 Reporter:  celloexpressions         |       Owner:
     Type:  enhancement              |      Status:  new
 Priority:  normal                   |   Milestone:  4.2
Component:  Customize                |     Version:  4.1
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-refresh  |     Focuses:  javascript
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Comment (by Fab1en):

 @westonruter : that's almost this, but the `expanded` event fires when the
 section start its expansion. I need an event that fires after the
 expansion is finished. In fact, what I need is called
 `defaultExpandedArguments.completeCallback` but I can't find a way to set
 it only for the proper control. Any hints ?

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Ticket URL: <https://core.trac.wordpress.org/ticket/30850#comment:8>
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