[wp-trac] [WordPress Trac] #31336: Customizer: separate navigation from options UI for better UX by removing accordion behavior

[WordPress Trac]

#31336: Customizer: separate navigation from options UI for better UX by removing
accordion behavior
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 Reporter:  celloexpressions    |      Owner:
     Type:  enhancement         |     Status:  new
 Priority:  normal              |  Milestone:  4.2
Component:  Customize           |    Version:  4.0
 Severity:  normal              |   Keywords:  has-patch
  Focuses:  ui, administration  |
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 Per several design concepts and discussions with @folletto since the
 Panels API was introduced in WordPress 4.0, the current "accordion"
 behavior of the Customizer controls area is fundamentally flawed. Sections
 should slide-in similarly to panels, allowing users to focus on the
 contents of the active section more easily and separating the navigation
 from the content/controls in the Customizer.

 The coming patch implements this behavior. There are a few quirks
 including the panel-back buttons needing improvement and widgets bumping
 out of the section contents when their controls are expanded (need
 @westonruter to look at that).

 This fixes many of the issues in #29158, and once this is complete we can
 circle back there to improve things like focus states.

 Backwards-compatibility is likely to break for custom section types, but
 thanks to the 4.1 JavaScript APIs and by keeping most of the underlying
 class names and CSS structure intact, issues should be reasonably minimal.

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Ticket URL: <https://core.trac.wordpress.org/ticket/31336>
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