* 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.
Built from https://develop.svn.wordpress.org/trunk@36689
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* Introduce `WP_Customize_Manager::get_nonces()` to consolidate logic for retrieving nonces.
* Export nonces centrally in `wp.customize.settings.nonce` with each request and update nav menus preview to utilize.
* Send updated nonces to preview upon `nonce-refresh`.
* Request full preview refresh if Nav Menu selective refresh request fails (e.g. due to bad nonce).
* Update nav menus and widgets in Customizer to utilize `customize_refresh_nonces` for exporting nonces and keeping them up to date.
See #27355.
Fixes#35617.
Built from https://develop.svn.wordpress.org/trunk@36414
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Add missing `params.completeCallback` to `MenuItemControl.focus()` for parity with `Control.focus()`. Also adds `params` to `MenuItemControl.expandForm`, `MenuItemControl.collapseForm()`, and `MenuItemControl.toggleForm()`.
Props MattGeri, westonruter.
Fixes#32681.
Built from https://develop.svn.wordpress.org/trunk@36383
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Also, adds missing labels and improves the existing ones.
Updates the "custom links" labels and inputs in the Customizer too.
Introduces a generic, reusable, `.wp-initial-focus` CSS class to be used for
the sole purpose of setting the initial focus.
"Quick Search": uniform the attached events and avoids new AJAX requests to
be triggered when the pressed key doesn't change the searched term.
Fixes#35374.
Built from https://develop.svn.wordpress.org/trunk@36379
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Available items now fade from view while you're searching, and there is an explicit way to clear search results. No results gives a better message, though still brief this time around.
props valendesigns, designsimply, DH-Shredder, helen.
fixes#32710.
Built from https://develop.svn.wordpress.org/trunk@33511
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* Use lists for available menu items.
* Remove unused template for available item types.
* Hide the type label and title from screen readers and instead include them in the add button.
props celloexpressions, afercia.
fixes#32724.
Built from https://develop.svn.wordpress.org/trunk@33151
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Also includes these related changes:
* Export `oldContainer` and `newContainer` among the `customize-preview-menu-refreshed` event params for themes to be able to more easily re-initialize the DOM elements.
* Improve performance for partial refresh by only sending settings related to the menu being previewed.
* Fix previewing of menu assigned to Custom Menu by exporting a menu `term_id` as opposed to an object, as the former is more stable for comparing in in args hashes.
* Do full refresh of preview when nav menu unassigned so that the layout can be updated.
* Harden conditions for when partial refresh is eligible for a `wp_nav_menu()` instance.
Fixes#32841.
Built from https://develop.svn.wordpress.org/trunk@33138
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These args only need to be cleared out when exported to JavaScript, when they are not JSON-serializable. So the filter now clears these when gathering args for exporting to JS, but otherwise now leaves the original values to be passed through to `wp_nav_menu()`.
Fixes#32781.
Built from https://develop.svn.wordpress.org/trunk@33131
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Adds validation for initially-supplied nav menu name, blocking empty names from being supplied. If later an empty name is supplied and the nav menu is saved, the name "(unnamed)" will be supplied instead and supplied back to the client. If a name is supplied for the menu which is currently used by another menu, then the name conflict is resolved by adding a numerical counter similar to how `post_name` conflicts are resolved. Includes unit tests.
Fixes#32760.
Built from https://develop.svn.wordpress.org/trunk@33071
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* Add a description and an `aria-describedby` attribute to inform users this is a "live" search.
* Announce the number of search results via `wp.a11y.speak`.
* Use `aria-busy` attribute to stop screen readers announcing content while the "loading more results" is running.
* Increase the search debounce wait interval to 500ms to be consistent with other live searches.
* If a search fails don't call `wp.a11y.speak` with an undefined variable.
props afercia.
see #32720.
Built from https://develop.svn.wordpress.org/trunk@32891
git-svn-id: http://core.svn.wordpress.org/trunk@32862 1a063a9b-81f0-0310-95a4-ce76da25c4cd
