Send back setting validities with full refreshes and selective refreshes so that invalid settings can have notifications displayed immediately before attempting save, and so that these notifications can be cleared as soon as the input is corrected.
* Splits out JS logic for listing controls into separate methods `wp.customize.Setting.prototype.findControls()` and `wp.customize.findControlsForSettings()`.
* Adds a `setting` property to the `data` on notifications added to controls that are synced from their settings.
* Adds `selective-refresh-setting-validities` message sent from preview to pane.
* Changes `WP_Customize_Manager::validate_setting_values()` to return when settings are valid as well as invalid.
* Adds `WP_Customize_Manager::prepare_setting_validity_for_js()`.
* Add setting validities to data exported to JS in Customizer Preview and in selective refresh responses.
Fixes#36944.
Built from https://develop.svn.wordpress.org/trunk@37700
git-svn-id: http://core.svn.wordpress.org/trunk@37666 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The `?tab=upload` page still exists for no-js support and for users who may
access it directly (e.g. from bookmarks or history) or plugins doing the same.
In this page, the "Browse plugins" link should always behave like a link.
Fixes#35429.
Built from https://develop.svn.wordpress.org/trunk@37681
git-svn-id: http://core.svn.wordpress.org/trunk@37647 1a063a9b-81f0-0310-95a4-ce76da25c4cd
When a setting is invalid, not only will it be blocked from being saved but all other settings will be blocked as well. This ensures that Customizer saves aren't partial but are more transactional. User will be displayed the error in a notification so that they can fix and re-attempt saving.
PHP changes:
* Introduces `WP_Customize_Setting::validate()`, `WP_Customize_Setting::$validate_callback`, and the `customize_validate_{$setting_id}` filter.
* Introduces `WP_Customize_Manager::validate_setting_values()` to do validation (and sanitization) for the setting values supplied, returning a list of `WP_Error` instances for invalid settings.
* Attempting to save settings that are invalid will result in the save being blocked entirely, with the errors being sent in the `customize_save_response`. Modifies `WP_Customize_Manager::save()` to check all settings for validity issues prior to calling their `save` methods.
* Introduces `WP_Customize_Setting::json()` for parity with the other Customizer classes. This includes exporting of the `type`.
* Modifies `WP_Customize_Manager::post_value()` to apply `validate` after `sanitize`, and if validation fails, to return the `$default`.
* Introduces `customize_save_validation_before` action which fires right before the validation checks are made prior to saving.
JS changes:
* Introduces `wp.customize.Notification` in JS which to represent `WP_Error` instances returned from the server when setting validation fails.
* Introduces `wp.customize.Setting.prototype.notifications`.
* Introduces `wp.customize.Control.prototype.notifications`, which are synced with a control's settings' notifications.
* Introduces `wp.customize.Control.prototype.renderNotifications()` to re-render a control's notifications in its notification area. This is called automatically when the notifications collection changes.
* Introduces `wp.customize.settingConstructor`, allowing custom setting types to be used in the same way that custom controls, panels, and sections can be made.
* Injects a notification area into existing controls which is populated in response to the control's `notifications` collection changing. A custom control can customize the placement of the notification area by overriding the new `getNotificationsContainerElement` method.
* When a save fails due to setting invalidity, the invalidity errors will be added to the settings to then populate in the controls' notification areas, and the first such invalid control will be focused.
Props westonruter, celloexpressions, mrahmadawais.
See #35210.
See #30937.
Fixes#34893.
Built from https://develop.svn.wordpress.org/trunk@37476
git-svn-id: http://core.svn.wordpress.org/trunk@37444 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Clicking on the Edit Menu button focuses on the corresponding nav menu section. Upon collapsing the nav menu section, the focus is returned to the Custom Menu widget instead of taking the user to the menus root panel. In this way, the back button behavior is modified once to serve as breadcrumb/history navigation. The Edit Menu button with the breadcrumb back button behavior greatly reduce the number of UI interactions needed to edit a menu referenced in a Custom Menu widget.
Props celloexpressions, westonruter.
Fixes#32683.
Built from https://develop.svn.wordpress.org/trunk@37437
git-svn-id: http://core.svn.wordpress.org/trunk@37403 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Also use 'back-compat' in some inline comments where backward compatibility is the subject and shorthand feels more natural.
Note: 'backwards compatibility/compatibile' can also be considered correct, though it's primary seen in regular use in British English.
Props ocean90.
Fixes#36835.
Built from https://develop.svn.wordpress.org/trunk@37431
git-svn-id: http://core.svn.wordpress.org/trunk@37397 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Pressing Esc collapses any expanded widget or nav menu item controls, or any control that implements the expanding interface. Also improves alignment between `WidgetControl` and `MenuItemControl`, adding the `expanded` state and associated `expand`/`collapse` methods to nav menu items.
Props purcebr, celloexpressions, westonruter.
Fixes#22237.
Built from https://develop.svn.wordpress.org/trunk@37347
git-svn-id: http://core.svn.wordpress.org/trunk@37313 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Also disables Save & Publish button while save request is open. After the save request completes, any settings changed during the request can then be saved via an additional click to the button.
Props chandrapatel, westonruter.
Fixes#32941.
Built from https://develop.svn.wordpress.org/trunk@37346
git-svn-id: http://core.svn.wordpress.org/trunk@37312 1a063a9b-81f0-0310-95a4-ce76da25c4cd
- makes the mobile preview/customize toggle a button
- changes the "Close" link hidden text from 'Cancel' to 'Close the Customizer and go back to the previous page'
- adds a missing `type="button"` attribute
- removes unnecessary `keydown` events and `preventDefault()`: buttons don't need a keydown event and when they have a `type="button"` attribute there's no default action to prevent
Props Cheffheid, afercia.
Fixes#31487.
Built from https://develop.svn.wordpress.org/trunk@37230
git-svn-id: http://core.svn.wordpress.org/trunk@37196 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Introduces `customize-selective-refresh-widgets` theme support feature and adds to themes.
* Introduces `customize_selective_refresh` arg for `WP_Widget::$widget_options` and adds to all core widgets.
* Remove `selective_refresh` from being a component that can be removed via `customize_loaded_components` filter.
* Add `WP_Customize_Widgets::get_selective_refreshable_widgets()` and `WP_Customize_Widgets::is_widget_selective_refreshable()`.
* Fix default `selector` for `Partial` instances.
* Implement and improve Masronry sidebar refresh logic in Twenty Thirteen and Twenty Fourteen, including preservation of initial widget position after refresh.
* Re-initialize ME.js when refreshing `Twenty_Fourteen_Ephemera_Widget`.
See #27355.
Fixes#35855.
Built from https://develop.svn.wordpress.org/trunk@37040
git-svn-id: http://core.svn.wordpress.org/trunk@37007 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The plugin details modal can be invoked from several screens. There's now a new
`.open-plugin-details-modal` CSS class to be used in combination with the
`.thickbox` CSS class that adds everything needed for accessibility.
- Adds an ARIA role `dialog` and an `aria-label` attribute to the modal
- Adds a `title` attribute to the iframe inside the modal
- Constrains tabbing within the modal
- Restores focus back in a proper place when closing the modal
Also, improves a bit the native Thickbox implementation: it should probably be
replaced with some more modern tool but at least keyboard focus should be moved
inside the modal.
Fixes#33305.
Built from https://develop.svn.wordpress.org/trunk@36964
git-svn-id: http://core.svn.wordpress.org/trunk@36932 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Eliminates need to click more than one checkbox to have preferences saved.
* Adds debouncing to saving user-selected menu item properties.
* Also removes discrepancies between available nav menu item properties on admin page vs Customizer.
Fixes#35273.
Props afercia, westonruter.
Built from https://develop.svn.wordpress.org/trunk@36908
git-svn-id: http://core.svn.wordpress.org/trunk@36876 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Removes double `margin-bottom` from all the media controls.
* All media controls now send `{settingId}-attachment-data` messages to the preview when a media setting is updated so that the preview has access to the attachment data.
* Fixes receiving of `attachment-data` message for `custom_logo` which resulted in instant JS-applied preview not working. See #36096.
See #33755.
Fixes#35941.
Built from https://develop.svn.wordpress.org/trunk@36851
git-svn-id: http://core.svn.wordpress.org/trunk@36818 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Removes overly-zealous filtering of autofocus panels, sections, and controls which are unrecognized or for which the user doesn't have the capability to focus (in which case it would no-op anyway). Also defers autofocus logic until instances are created, even after initial `ready` event. This ensures that autofocus can apply for any panels, sections, or controls that get created via the loaded preview.
See #28650.
Fixes#36018.
Built from https://develop.svn.wordpress.org/trunk@36796
git-svn-id: http://core.svn.wordpress.org/trunk@36763 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* 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
git-svn-id: http://core.svn.wordpress.org/trunk@36656 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Correct several incorrect uses of `_.union`. Since Underscore 1.7.0 `_.union` supports only arrays and not variadic args.
* Use a namespaced event `themes:update`. Backbone 1.2 added a built in `update` event that triggers after any amount of models are added or removed from a collection.
Props adamsilverstein.
See #34350.
Built from https://develop.svn.wordpress.org/trunk@36580
git-svn-id: http://core.svn.wordpress.org/trunk@36547 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Backbone, from 1.1.2 to 1.2.3. Underscore, from 1.6.0 to 1.8.3.
The new versions of Backbone and Underscore offer numerous small bug fixes and some optimizations and other improvements. Check the [http://backbonejs.org/#changelog Backbone changelog] and [http://underscorejs.org/#changelog Underscore changelog] for the full details.
The new versions include some significant changes that may break existing code. Plugins or themes that rely on the bundled Backbone and/or Underscore libraries should carefully check functionality with the latest versions and run any available unit tests to ensure compatibility.
Some changes of note that were addressed in core as part of this upgrade:
* `_.flatten` no longer works with objects since Underscore.js 1.7. `_.flatten()` working with objects was an unintended side-affect of the implementation, see [https://github.com/jashkenas/underscore/issues/1904#issuecomment-60241576 underscore#1904]. Check any `_flatten` usage and only flatten arrays.
* As of Backbone 1.2.0, you can no longer modify the `events` hash or your view's `el` property in `initialize`, so don't try to modify them there.
* Since Underscore 1.7, Underscore templates no longer accept an initial data object. `_.template` always returns a function now so make sure you use it that way.
Props adamsilverstein.
Fixes#34350.
Built from https://develop.svn.wordpress.org/trunk@36546
git-svn-id: http://core.svn.wordpress.org/trunk@36513 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Introduces `WP_Customize_Manager::get_previewable_devices()` with a `customize_previewable_devices` filter to change the default device and which devices are available for previewing. This is a feature that was first pioneered on WordPress.com.
Props celloexpressions, folletto, valendesigns, westonruter, welcher, adamsilverstein, michaelarestad, Fab1en.
Fixes#31195.
Built from https://develop.svn.wordpress.org/trunk@36532
git-svn-id: http://core.svn.wordpress.org/trunk@36499 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In the Edit Menu screen, each menu item creates 11 form input elements. In menus with more than 71 menu items, often items after the 71st weren't saved. This was because PHP's runtime configuration `max_input_vars` default value is 1000. Large menus exceed this, so PHP didn't populate the `$_POST` superglobal for the latter menu items.
The entire form is now JSON-encoded into a single input which populates `$_POST` manually on form submission.
This was attempted previously in [36506] which was reverted in [36507]. Some form fields were not being slurped into the form's JSON representation, and it did not scale for a site with many posts. This approach fixes those problems.
Props ocean90, afercia.
See #14134.
Built from https://develop.svn.wordpress.org/trunk@36510
git-svn-id: http://core.svn.wordpress.org/trunk@36477 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In the Edit Menu screen, each menu item creates 11 form input elements. In menus with more than 71 menu items, often items after the 71st weren't saved. This was because PHP's runtime configuration `max_input_vars` default value is 1000. Large menus exceed this, so PHP didn't populate the `$_POST` superglobal for the latter menu items.
The entire form is now JSON-encoded into a single input which populates `$_POST` manually on form submission.
See #14134.
Built from https://develop.svn.wordpress.org/trunk@36506
git-svn-id: http://core.svn.wordpress.org/trunk@36473 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fixes regression introduced in [36414] where the nonce for listing available nav menu items was updated to use the new centralized location at `wp.customize.settings.nonce`, but the nonce for search did not get updated.
See #35617.
Built from https://develop.svn.wordpress.org/trunk@36432
git-svn-id: http://core.svn.wordpress.org/trunk@36399 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* 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
git-svn-id: http://core.svn.wordpress.org/trunk@36381 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Ensure that Setting `Value` objects in preview get initial `_dirty` flag set if values among POST data.
* Upon `saved` event, send `saved` message to preview with the `response` to trigger `saved` event there.
* Reset `_dirty` flag for all setting `Value` objects in preview upon `saved`.
* Continue to create settings synced from pane even after initial bootstrap, and create them as dirty.
* Ensure that `id` property is set for setting `Value` objects in preview.
See #27355.
Fixes#35616.
Built from https://develop.svn.wordpress.org/trunk@36407
git-svn-id: http://core.svn.wordpress.org/trunk@36374 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fixes a layout issue in the Customizer UI. Also de-duplicate title display logic, outputting "Loading..." as site title in PHP with actual title being set upon Customizer `ready`. Also update the site title in response to a `blogname` setting change as opposed to `input` DOM events on the control.
Fixes#35579.
Built from https://develop.svn.wordpress.org/trunk@36388
git-svn-id: http://core.svn.wordpress.org/trunk@36355 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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
git-svn-id: http://core.svn.wordpress.org/trunk@36350 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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
git-svn-id: http://core.svn.wordpress.org/trunk@36346 1a063a9b-81f0-0310-95a4-ce76da25c4cd
These checkboxes are used on the Menus screen options and the Customizer Menus options.
Their IDs were removed in [34991] but they're needed to get the checkboxes to be saved
via AJAX. Also, avoids a useless AJAX call.
Fixes#35112 for trunk.
Built from https://develop.svn.wordpress.org/trunk@36137
git-svn-id: http://core.svn.wordpress.org/trunk@36103 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Introduces a simple way to give a proper semantics of `button` to links that behave
like UI controls when JavaScript is on and behave like actual links when JavaScript
is off. First implementation on the Terms list table.
Patch prepared during WordCamp US 2015 Contributor Day.
Props mcapybara, garusky, takayukister.
See #26504.
Fixes#34867.
Built from https://develop.svn.wordpress.org/trunk@35947
git-svn-id: http://core.svn.wordpress.org/trunk@35911 1a063a9b-81f0-0310-95a4-ce76da25c4cd
When sorting a metabox, a clone of that metabox is created as a drag/drop "helper".
Previously, any checked radio input in the original metabox would become unchecked, when its clone "helper" was inserted into the DOM
(since only one radio within a set of radios of the same name can be checked).
Continued use of the clone helper is important so that the element being dragged isn't subject to the click and other event handlers attached to the real metabox,
so we can't just switch to dragging around the real metabox. See, for example, comment:10:ticket:16972.
Preserve the radios' state via some name attribute trickery.
Fixes#16972
Built from https://develop.svn.wordpress.org/trunk@35809
git-svn-id: http://core.svn.wordpress.org/trunk@35773 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Changes the "Cancel" and "Update" controls in buttons for better semantics and
accessibility. On cancel and successful saving, moves focus back to the term title
to avoid a focus loss. Dispatches error and success messages to `wp.a11y.speak`
to give assistive technologies users an audible feedback.
Patch prepared at #wpcdit, first Italian WordPress Contributor Day.
Props garusky, chiara_09.
Fixes#34613.
Built from https://develop.svn.wordpress.org/trunk@35605
git-svn-id: http://core.svn.wordpress.org/trunk@35569 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Embed the `nav_menu_item` control not only when the contained `nav_menu` section expands, but also if the control was autofocused (via the `autofocus[control]` query param). Also applies change from [33596] to work-around a broken `:focusable` selector in jQuery UI.
See #33258.
Fixes#34629.
Built from https://develop.svn.wordpress.org/trunk@35584
git-svn-id: http://core.svn.wordpress.org/trunk@35548 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This issue would appear when the parent nav menu item was also newly-inserted. The issue was only apparent in the prevew, as the actual data saved was correct. The `menu_item_parent` properties of the saved sub-nav menu items needed to get updated to refer to the newly-inserted parent `nav_menu_item` post IDs, as opposed to retaining the placeholder IDs.
Fixes#34628.
Built from https://develop.svn.wordpress.org/trunk@35581
git-svn-id: http://core.svn.wordpress.org/trunk@35545 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add widget controls with an initially-true `active` state so that calling `expand()` will not be short-circuited. Previously the `active` state would be set once the preview refreshes, but this happens too late for the `addWidget` call. Fixes regression introduced in [35231].
Fixes#34514.
Built from https://develop.svn.wordpress.org/trunk@35486
git-svn-id: http://core.svn.wordpress.org/trunk@35450 1a063a9b-81f0-0310-95a4-ce76da25c4cd
For accessibility, UI controls should preferably be native controls. Adds
ARIA attributes and labels to improve accessibility and pair these buttons
with the ones in the Menu Customizer.
Props obenland, TomHarrigan, sanket.parmar, metodiew, afercia.
Fixes#33327.
Built from https://develop.svn.wordpress.org/trunk@35304
git-svn-id: http://core.svn.wordpress.org/trunk@35270 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The same indicator on the nav menus admin page is now present for nav menu items in the Customizer. When a menu item is present for a post type that is no longer registered, the menu item will appear with the indicator.
Props kucrut, westonruter.
Fixes#33665.
Built from https://develop.svn.wordpress.org/trunk@35302
git-svn-id: http://core.svn.wordpress.org/trunk@35268 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Widgets panel will not wait to display until the preview loads.
Also fixes problems with `margin-top` in panels where other panels' `active` states change, as well as ensuring sections of deactivated panel collapse before panel is hidden to prevent the pane from becoming empty of controls.
Fixes#33052.
Fixes#33567.
Built from https://develop.svn.wordpress.org/trunk@35231
git-svn-id: http://core.svn.wordpress.org/trunk@35197 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In 4.3 the widget controls were fully initialized up front along with the sidebar controls. The sidebar control depended (unnecessarily) on the widget control to ensure that `wp.customize.Widgets.savedWidgetIds` was defined. So after [34563] there could be a situation where the widgets are added/removed from a sidebar before their controls are initialized (if the sidebar section is never expanded), resulting in an error attempting to get a property off of an undefined value. So this change does the right thing and defines `savedWidgetIds` up front.
Also changes the `savedWidgetIds` variable type from an array to an object, to match how it is used as a dictionary lookup.
See #33901.
Built from https://develop.svn.wordpress.org/trunk@34883
git-svn-id: http://core.svn.wordpress.org/trunk@34848 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Instead of using `Array.toString()` to serialize an array with comma delimiters, explicitly `join` the array using spaces instead. Also ensure that `xfn` is handled properly if it ever gets stored as an array.
Props tyxla, westonruter.
Fixes#34111.
Built from https://develop.svn.wordpress.org/trunk@34788
git-svn-id: http://core.svn.wordpress.org/trunk@34753 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Also, add a "Edit Comment" legend before the Quick Edit form to pair it with "Reply to Comment" and "Add new Comment" and move the Name, Email, and URL fields after the Comment textarea.
Props joedolson, afercia.
Fixes#33757.
Built from https://develop.svn.wordpress.org/trunk@34743
git-svn-id: http://core.svn.wordpress.org/trunk@34708 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Previously there were two persistent "View Post" links on an edit screen: next to the permalink and in the toolbar. This would then become three links after a post was published or updated, as a link is also included in the admin notice. This is a lot of redundancy and visual noise for a flow that is not your primary action upon starting to edit a post. The "View Post" link next to the sample permalink was particularly bad because it is styled like a button, but unlike a button, does not keep you on the current screen.
Because the permalink is now linked, there is no highlighted slug that you can click to edit, but rather just the "Edit" button.
props scribu, lessbloat, sabreuse, SergeyBiryukov, DrewAPicture, helen.
see #18306.
Built from https://develop.svn.wordpress.org/trunk@34670
git-svn-id: http://core.svn.wordpress.org/trunk@34634 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The Menu Customizer feature includes a performance technique whereby the controls for nav menu items are only embedded into the DOM once the containing menu section is expanded. This commit implements the same DOM deferral for widgets but goes a step further than just embedding the controls once the widget area's Customizer section is expanded: it also defers the embedding of the widget control's form until the widget is expanded, at which point the `widget-added` event also fires to allow any additional widget initialization to be done. The deferred DOM embedding can speed up initial load time by 10x or more. This DOM deferral also yields a reduction in overall memory usage in the browser process.
Includes changes to `wp_widget_control()` to facilitate separating out the widget form from the surrounding accordion container; also includes unit tests for this previously-untested function. Also included are initial QUnit tests (finally) for widgets in the Customizer.
Fixes#33901.
Built from https://develop.svn.wordpress.org/trunk@34563
git-svn-id: http://core.svn.wordpress.org/trunk@34527 1a063a9b-81f0-0310-95a4-ce76da25c4cd
