[wp-trac] [WordPress Trac] #33901: Defer embedding Customizer widget controls to improve DOM performance

[WordPress Trac]

#33901: Defer embedding Customizer widget controls to improve DOM performance
-------------------------------------+--------------------------
 Reporter:  westonruter              |       Owner:  westonruter
     Type:  enhancement              |      Status:  accepted
 Priority:  normal                   |   Milestone:  4.4
Component:  Customize                |     Version:  3.9
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:  performance
-------------------------------------+--------------------------

Comment (by westonruter):

 [attachment:33901.3.diff] finally adds QUnit test fixtures for widgets in
 the Customizer, as well as tests specific to the changes introduced here.

 If anyone could test out the changes and confirm that the speed
 improvements are present and regressions are absent, remove the `needs-
 testing` and I'll commit!

 Note that the Customize Widgets Plus feature plugin implements the
 features in this ticket so the performance improvements can be had on 4.3
 now: https://github.com/xwp/wp-customize-widgets-plus/pull/32

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Ticket URL: <https://core.trac.wordpress.org/ticket/33901#comment:5>
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