[wp-trac] [WordPress Trac] #27355: Customizer: Add framework for selective refresh (partial preview refreshes)

[WordPress Trac]

#27355: Customizer: Add framework for selective refresh (partial preview refreshes)
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 Reporter:  westonruter                          |       Owner:
     Type:  task (blessed)                       |  westonruter
 Priority:  normal                               |      Status:  closed
Component:  Customize                            |   Milestone:  4.5
 Severity:  normal                               |     Version:  3.4
 Keywords:  has-patch has-unit-tests commit      |  Resolution:  fixed
  has-screenshots                                |     Focuses:  javascript
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Comment (by westonruter):

 In [changeset:"36689"]:
 {{{
 #!CommitTicketReference repository="" revision="36689"
 Customize: Allow controls to be registered without any associated
 settings.

 * Improves parity between partials and controls. A partial or control can
 be settingless if instantiated with `settings` param as empty array
 (otherwise, if null, then the partial/control ID is used).
 * Eliminate need to create dummy settings that serve no purpose except to
 place a control in the UI.
 * Removes dummy settings for `create_new_menu` and `new_menu_name`.
 * Introduces `WP_Customize_Control::$capability` and
 `WP_Customize_Partial::$capability`, and if set checks them in the
 respective `check_capabilities()` methods.
 * Prevents PHP fatal error from happening when non-existing settings are
 provided to control: "Call to a member function `check_capabilities()` on
 a non-object".
 * Fixes issue where nav menu items and widgets were no longer working with
 selective refresh because cap check was failing.

 See #27355.
 Fixes #35926.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/27355#comment:86>
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