* Use `postMessage` transport for header image settings by default when video headers are supported, and thus `the_custom_header_markup()` will necessarily be used (and thus a selective refresh partial will be available).
* Ensure that `the_custom_header_markup()` always outputs a container element in the customizer preview even if the header is empty.
* Ensure that edit shortcut appearing for custom header does not get positioned off-screen.
Props bradyvercher, westonruter.
See #38639.
Fixes#38737.
Built from https://develop.svn.wordpress.org/trunk@39227
git-svn-id: http://core.svn.wordpress.org/trunk@39167 1a063a9b-81f0-0310-95a4-ce76da25c4cd
"Header Visuals" is a bit vague since the title/tagline are arguably
also “header visuals”. "Header Media" is more descriptive and is
consistent with how we refer to images/videos throughout core.
Props bradyvercher.
Fixes#38756.
Built from https://develop.svn.wordpress.org/trunk@39205
git-svn-id: http://core.svn.wordpress.org/trunk@39145 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Restoring the current user context when saving a setting ensures filters apply as expected, such as Kses. When a user is not associated with a given setting change, continue to override `capability` to be `exist` when saving. Skip overwriting setting values in a changeset that have not changed, facilitating concurrent editing and amending a changeset by a user with fewer privileges.
See #30937.
Fixes#38705.
Built from https://develop.svn.wordpress.org/trunk@39181
git-svn-id: http://core.svn.wordpress.org/trunk@39121 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Following [39128], this removes the validation logic for Vimeo URLs from
`_validate_external_header_video()` since WP does not support the
display of videos from Vimeo by default.
This also includes a change to using `esc_url_raw()` instead of `esc_url()`
on the URL value to avoid unexpected behavior from the inclusion of HTML
entities.
Props peterwilsoncc, westonruter.
Fixes#38544.
Built from https://develop.svn.wordpress.org/trunk@39148
git-svn-id: http://core.svn.wordpress.org/trunk@39088 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This is a great goal for core, and is close, but it is not in shape to be shipped for 4.7 and there is not enough time left in the development cycle to alter and polish sufficiently. There are bugs, but more than that, there are more fundamental questions around the use of existing UI, general UX, and how findable themes are (not) on the .org side.
see #37661.
Built from https://develop.svn.wordpress.org/trunk@39140
git-svn-id: http://core.svn.wordpress.org/trunk@39080 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Vimeo's API requires a Pro account to display videos as background videos
(i.e., without player controls), thus we shouldn't support Vimeo
URLs by default in custom header videos. This removes the reference of Vimeo
from the control description in the customizer.
Fixes#38544.
Built from https://develop.svn.wordpress.org/trunk@39128
git-svn-id: http://core.svn.wordpress.org/trunk@39068 1a063a9b-81f0-0310-95a4-ce76da25c4cd
When themes register default headers, they can use sprintf style placeholder
strings in place of the template directory URI, which WordPress transforms
in several places by running the value of
`get_theme_support( 'custom-header', 'default-image' )` through `sprintf()`.
This fixes a few places where WordPress skipped the `sprintf()` step and
referenced the `get_theme_support()` value directly.
Props bradyvercher for initial patch.
See #38557.
Built from https://develop.svn.wordpress.org/trunk@39123
git-svn-id: http://core.svn.wordpress.org/trunk@39063 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Allow `WP_Customize_Nav_Menus::insert_auto_draft_post()` to take full post array to pass to `wp_insert_post()`, except for `post_status`. Require `post_title`.
* Ensure empty `post_name` gets explicitly set to slugified `post_title`.
* Explicitly allow only `post_type` and `post_title` params in `WP_Customize_Nav_Menus::ajax_insert_auto_draft_post()`.
* Use `wp_update_post()` instead of `wp_publish_post()` to ensure unique slugs are assigned to published auto-draft posts.
* Re-use `WP_Customize_Nav_Menus::insert_auto_draft_post()` when inserting stubs from starter content.
See #38114, #38013, #34923.
Fixes#38539.
Built from https://develop.svn.wordpress.org/trunk@39038
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A theme can opt-in for tailored starter content to apply to the customizer when previewing the theme on a fresh install, when `fresh_site` is at its initial `1` value. Starter content is staged in the customizer and does not go live unless the changes are published. Initial starter content is added to Twenty Seventeen.
* The `fresh_site` flag is cleared when a published post or page is saved, when widgets are modified, or when the customizer state is saved.
* Starter content is registered via `starter-content` theme support, where the argument is an array containing `widgets`, `posts`, `nav_menus`, `options`, and `theme_mods`. Posts/pages in starter content are created with the `auto-draft` status, re-using the page/post stubs feature added to nav menus and the static front page controls.
* A `get_theme_starter_content` filter allows for plugins to extend a theme's starter content.
* Starter content in themes can/should re-use existing starter content items in core by using named placeholders.
* Import theme starter content into customized state when fresh site.
* Prevent original_title differences from causing refreshes if title is present.
* Ensure nav menu item url is set according to object when previewing.
* Make sure initial saved state is false if there are dirty settings without an existing changeset.
* Ensure dirty settings are cleaned upon changeset publishing.
Props helen, westonruter, ocean90.
Fixes#38114, #38533.
Built from https://develop.svn.wordpress.org/trunk@38991
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This adds the ability for themes to add support for videos in custom headers
by passing `'video' => true` as an argument when adding theme support for
custom headers.
Custom video headers are managed through the “Header Visuals” (i.e. “Header Image”)
panel in the Customizer where you can select a video from the media library or set a
URL to an external video (YouTube for now) for use in custom headers.
This introduces several new functions:
`has_header_video()` – Check whether a header video is set or not.
`get_header_video_url()` – Retrieve header video URL for custom header.
`the_header_video_url()` – Display header video URL.
`get_header_video_settings()` – Retrieve header video settings.
`has_custom_header()` – Check whether a custom header is set or not.
`get_custom_header_markup()` – Retrieve the markup for a custom header.
`the_custom_header_markup()` – Print the markup for a custom header.
And a new file, `wp-includes/js/wp-custom-header.js` that handles loading videos
in custom headers.
This also enables video headers in the Twenty Seventeen and Twenty Fourteen themes.
Props davidakennedy, celloexpressions, bradyvercher, laurelfulford, joemcgill.
Fixes#38172.
Built from https://develop.svn.wordpress.org/trunk@38985
git-svn-id: http://core.svn.wordpress.org/trunk@38928 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Introduces new control for managing the background position. Adds control for setting the `background-size`.
Props cdog, celloexpressions, grapplerulrich, MikeHansenMe, FolioVision, afercia, helen, melchoyce, karmatosed, westonruter, Kelderic, sebastian.pisula.
Fixes#22058.
Built from https://develop.svn.wordpress.org/trunk@38948
git-svn-id: http://core.svn.wordpress.org/trunk@38891 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In addition to `wp_list_filter()` for filtering a list of objects, and `wp_list_pluck()` for plucking a certain field out of each object in a list, this new function can be used for sorting a list of objects by specific fields. These functions are now all contained within the new `WP_List_Util()` class and `wp_list_sort()` is used in various parts of core for sorting lists.
This was previously committed in [38859] but got reverted in [38862] and [38863]. To fix the previous issues, `wp_list_sort()` supports now an additional argument to preserve array keys via `uasort()`.
Props flixos90, DrewAPicture, jorbin.
Fixes#37128.
Built from https://develop.svn.wordpress.org/trunk@38928
git-svn-id: http://core.svn.wordpress.org/trunk@38871 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This ability was previously added to nav menus via the available page items panel. The "Add New Page" button only appears when the `allow_addition` control param is supplied as `true`. Code is adapted from the Customize Posts feature plugin.
Props celloexpressions, westonruter.
See #38013, #34923.
Fixes#38164.
Built from https://develop.svn.wordpress.org/trunk@38906
git-svn-id: http://core.svn.wordpress.org/trunk@38849 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In addition to `wp_list_filter()` for filtering a list of objects, and `wp_list_pluck()` for plucking a certain field out of each object in a list, this new function can be used for sorting a list of objects by specific fields. These functions are now all contained within the new `WP_List_Util()` class and `wp_list_sort()` is used in various parts of core for sorting lists.
Props flixos90, DrewAPicture, jorbin.
Fixes#37128.
Built from https://develop.svn.wordpress.org/trunk@38859
git-svn-id: http://core.svn.wordpress.org/trunk@38802 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Custom CSS is associated with a given theme and is displayed in an inline `style` element at the `wp_head` hook after the `wp_print_styles` is called so that it overrides any enqueued stylesheets.
* A `wp_get_custom_css()` function is used for accessing the CSS associated with the current theme (or another theme) and a `wp_get_custom_css` filter for manipulating it.
* CSS is managed in customizer via a new "Additional CSS" section with a single `textarea` control.
* `WP_Customize_Section::$description_hidden` is introduced for hiding extended descriptions in customizer sections behind a help toggle as done with panels.
* CSS is stored in a `custom_css` post type with the theme (stylesheet) slug as the `post_name`.
* `WP_Customize_Custom_CSS_Setting` is introduced to handle validation of CSS, previewing, and persisting the CSS to the `custom_css` post type.
* The `custom_css` setting is tied to a new `unfiltered_css` capability which maps to `unfiltered_html` by default.
* Escaping the message in the notification template is removed to allow markup (`code` tags) to be rendered.
See https://make.wordpress.org/core/2016/10/11/feature-proposal-better-theme-customizations-via-custom-css-with-live-previews/
Props johnregan3, celloexpressions, folletto, westonruter.
Fixes#35395.
Built from https://develop.svn.wordpress.org/trunk@38829
git-svn-id: http://core.svn.wordpress.org/trunk@38772 1a063a9b-81f0-0310-95a4-ce76da25c4cd
If there are no pages when the customizer is opened, the `static_front_page` section will be hidden. As soon as a page is created in the customizer session, the `static_front_page` section will be revealed. Previously the section would not be registered if there were no pages. Page stubs created via nav menus will appear in the `dropdown-pages` controls for `page_for_posts` and `page_on_front`, and such page stubs will thus cause the `static_front_page` section to appear. Plugins that facilitate page creation in the customizer by filtering `get_pages` will also cause the section to appear.
See #34923.
Fixes#38013.
Built from https://develop.svn.wordpress.org/trunk@38624
git-svn-id: http://core.svn.wordpress.org/trunk@38567 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Eliminates the server mutating the a `WP_Error`'s `$error_data` to merge-in a `$from_server` flag (since it may not be an array to begin with). Instead it defers to the client to add a `fromServer` param on any `Notification` instances created from server-sent errors.
* Ensures that notifications will be re-rendered if a notification's `message` changes but the `data` and `type` remain the same.
* Adds explicit support for the `Notification` class to have a `setting` property, ensuring that the property is set whereas previously it was dropped.
Fixes#37890.
Props westonruter, dlh.
Built from https://develop.svn.wordpress.org/trunk@38513
git-svn-id: http://core.svn.wordpress.org/trunk@38454 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* `wp-admin` and `wp-includes` are scanned for classes to autoload
* Several 3rd-party and Ryan McCue-shaped libraries are excluded when the classmap is generated, see `composer.json`: `autoload.exclude-from-classmap`
* `wp-vendor/autoload_52.php` is included at the top of `wp-settings.php` - no changes need to be made to unit tests to include the autoloader
* An avalanche of `require()` and `require_once()` calls that loaded class files have been removed from the codebase.
The following files have been added to `svn:ignore` - they are not 5.2-compatible and fail during pre-commit:
* src/wp-vendor/autoload.php
* src/wp-vendor/composer/autoload_real.php
* src/wp-vendor/composer/autoload_static.php
* src/wp-vendor/composer/ClassLoader.php
We favor these files instead:
* src/wp-vendor/autoload_52.php
* src/wp-vendor/composer/autoload_real_52.php
* src/wp-vendor/composer/ClassLoader52.php
When new PHP classes are added to the codebase, simply run `composer install` or `composer update` from the project root to update the autoloader.
The future is now.
See #36335.
Built from https://develop.svn.wordpress.org/trunk@38399
git-svn-id: http://core.svn.wordpress.org/trunk@38340 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The new format looks like "Sorry, you are not allowed to <action>.". This provides a consistent experience for all error messages related to missing permissions. It also reduces the number of similar strings and allows translators to provide a consistent style in their language.
Props ramiy, Presskopp.
Fixes#34521.
Built from https://develop.svn.wordpress.org/trunk@37914
git-svn-id: http://core.svn.wordpress.org/trunk@37855 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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
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
Known functions, classes, and methods are now auto-linked in Code Reference pages following #meta1483.
Note: Hook references are still linked via inline `@see` tags due to the unlikelihood of reliably matching for known hooks based on a RegEx pattern.
See #32246.
Built from https://develop.svn.wordpress.org/trunk@37342
git-svn-id: http://core.svn.wordpress.org/trunk@37308 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Allows themes to specify the desired width and height of logos, and whether
that is flexible or not. Has the benefit of not having to generate a logo-sized
file for every image uploaded.
Props westonruter, celloexpressions.
Fixes#36255.
Built from https://develop.svn.wordpress.org/trunk@37077
git-svn-id: http://core.svn.wordpress.org/trunk@37044 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
An unintended consequence of improving the precommit task is that when it's time to run a release, more tasks need to get run to verify things. This adds a prerelease task to help fix that situation. grunt prerelease should include tasks that verify the code base is ready to be released to the wild and find all the tears on the mausoleum floor and help Blood stain the Colosseum doors.
See #35557
Built from https://develop.svn.wordpress.org/trunk@36930
git-svn-id: http://core.svn.wordpress.org/trunk@36898 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
A `temp` control is instantiated when `WP_Customize_Manager:: render_control_templates()` is called. This control needs to explicitly specify an empty settings array to avoid trying to use a `temp` setting which won't exist.
See #35926.
See #29572.
Built from https://develop.svn.wordpress.org/trunk@36776
git-svn-id: http://core.svn.wordpress.org/trunk@36743 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
* 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 issue where user gets stuck at login screen after trying to close the app if previously they had to first login to access the Customizer. Prevents `WP_Customize_Manager::get_return_url()` from using `wp-login.php` as a referer.
Props chandrapatel.
See #32637.
Fixes#35355.
Built from https://develop.svn.wordpress.org/trunk@36261
git-svn-id: http://core.svn.wordpress.org/trunk@36228 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Link to code reference page for `customize_loaded_components` instead of linking to a Trac comment.
* Remove HTML code from being included in translated string.
* Add missing translator comment for the specifiers in the translated string.
Amends [36216].
Props DrewAPicture.
Fixes#35242.
Built from https://develop.svn.wordpress.org/trunk@36219
git-svn-id: http://core.svn.wordpress.org/trunk@36186 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Introduce `customize_post_value_set_{$setting_id}` and `customize_post_value_set` actions which are done when `WP_Customize_Manager::set_post_value()` is called.
* Clear the `preview_applied` flag for aggregated multidimensional settings when a post value is set. This ensures the new value is used instead of a previously-cached previewed value.
* Move `$is_preview` property from subclasses to `WP_Customize_Setting` parent class.
* Deferred preview: Ensure that when `preview()` short-circuits due to not being applicable that it will be called again later when the post value is set.
* Populate post value for updated-widget with the (unsanitized) JS-value in `WP_Customize_Widgets::call_widget_update()` so that value will be properly sanitized when accessed in `WP_Customize_Manager::post_value()`.
Includes unit tests with assertions to check the reported issues and validate the fixes.
Fixes defect introduced in [35007].
See #32103.
Fixes#34738.
Built from https://develop.svn.wordpress.org/trunk@35724
git-svn-id: http://core.svn.wordpress.org/trunk@35688 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This fixes an edge case where the Close button could never link the user out of the Customizer, if the user initially accessed it without a `url` param and then clicked a link (provided by a plugin) that took them to another `customize.php` URL.
See #32637.
Built from https://develop.svn.wordpress.org/trunk@35635
git-svn-id: http://core.svn.wordpress.org/trunk@35599 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Also move style rule from `customize-nav-menus.css` to `customize-controls.css` so that widgets button is properly styled when `nav_menus` component is excluded from loading. See [35304]. See #33327.
Props westonruter, DrewAPicture.
Fixes#33552.
Built from https://develop.svn.wordpress.org/trunk@35307
git-svn-id: http://core.svn.wordpress.org/trunk@35273 1a063a9b-81f0-0310-95a4-ce76da25c4cd
When there are hundreds of settings and controls (e.g. nav menu items and widget instances) the resulting object that is JSON-encoded can become very large, and `wp_json_encode()` can consume a lot of memory to serialize it. By breaking down the serialization into multiple calls the peak memory usage can be kept in line.
Moves logic out of `wp-admin/customize.php` into the `WP_Customize_Manager` class with new methods:
* `is_ios()`
* `get_document_title_template()`
* `get_preview_url()`/`set_preview_url()`
* `get_return_url()`/`set_return_url()`
* `get_autofocus()`/`set_autofocus()`
* `customize_pane_settings()`
Includes unit tests for these methods, for which the logic was formerly untestable in `customize.php`.
Fixes#33898.
Built from https://develop.svn.wordpress.org/trunk@34269
git-svn-id: http://core.svn.wordpress.org/trunk@34233 1a063a9b-81f0-0310-95a4-ce76da25c4cd
* Monkey patches imgAreaSelect library to support touch events.
* Removes Settings version of Site Icon since it would have been the same flow.
* Removes default value for Customizer setting - there is no default favicon.
Fixes#16434.
Built from https://develop.svn.wordpress.org/trunk@33329
git-svn-id: http://core.svn.wordpress.org/trunk@33301 1a063a9b-81f0-0310-95a4-ce76da25c4cd
