[wp-trac] [WordPress Trac] #33177: Persist expanded states for submenus in Twenty Fifteen when customizing menus

[WordPress Trac]

#33177: Persist expanded states for submenus in Twenty Fifteen when customizing
menus
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 Reporter:  westonruter   |       Owner:  westonruter
     Type:  defect (bug)  |      Status:  accepted
 Priority:  low           |   Milestone:  4.3
Component:  Themes        |     Version:  trunk
 Severity:  minor         |  Resolution:
 Keywords:  has-patch     |     Focuses:  javascript
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Comment (by westonruter):

 In [attachment:33177.diff]:

 * Improve naming of param from `wpNavArgs` to `wpNavMenuArgs` for
 `customize-preview-menu-refreshed` event params.
 * Re-sync expanded states from menu container being replaced
 * Prevents main navigation from being re-initialized multiple times when
 editing a separate menu assigned to Social Links Menu, causing a toggle
 button to be newly inserted with each social menu change. See [attachment
 :duplicated-toggle-buttons.png].

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Ticket URL: <https://core.trac.wordpress.org/ticket/33177#comment:2>
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