<?php
/**
* Post API: WP_Post_Type class
*
* @package WordPress
* @subpackage Post
* @since 4.6.0
*/

/**
* Core class used for interacting with post types.
*
* @since 4.6.0
*
* @see register_post_type()
*/
#[AllowDynamicProperties]
final class WP_Post_Type {
/**
* Post type key.
*
* @since 4.6.0
* @var string $name
*/
public $name;

/**
* Name of the post type shown in the menu. Usually plural.
*
* @since 4.6.0
* @var string $label
*/
public $label;

/**
* Labels object for this post type.
*
* If not set, post labels are inherited for non-hierarchical types
* and page labels for hierarchical ones.
*
* @see get_post_type_labels()
*
* @since 4.6.0
* @var stdClass $labels
*/
public $labels;

/**
* Default labels.
*
* @since 6.0.0
* @var (string|null)[][] $default_labels
*/
protected static $default_labels = array();

/**
* A short descriptive summary of what the post type is.
*
* Default empty.
*
* @since 4.6.0
* @var string $description
*/
public $description = '';

/**
* Whether a post type is intended for use publicly either via the admin interface or by front-end users.
*
* While the default settings of $exclude_from_search, $publicly_queryable, $show_ui, and $show_in_nav_menus
* are inherited from public, each does not rely on this relationship and controls a very specific intention.
*
* Default false.
*
* @since 4.6.0
* @var bool $public
*/
public $public = false;

/**
* Whether the post type is hierarchical (e.g. page).
*
* Default false.
*
* @since 4.6.0
* @var bool $hierarchical
*/
public $hierarchical = false;

/**
* Whether to exclude posts with this post type from front end search
* results.
*
* Default is the opposite value of $public.
*
* @since 4.6.0
* @var bool $exclude_from_search
*/
public $exclude_from_search = null;

/**
* Whether queries can be performed on the front end for the post type as part of `parse_request()`.
*
* Endpoints would include:
*
* - `?post_type={post_type_key}`
* - `?{post_type_key}={single_post_slug}`
* - `?{post_type_query_var}={single_post_slug}`
*
* Default is the value of $public.
*
* @since 4.6.0
* @var bool $publicly_queryable
*/
public $publicly_queryable = null;

/**
* Whether this post type is embeddable.
*
* Default is the value of $public.
*
* @since 6.8.0
* @var bool $embeddable
*/
public $embeddable = null;

/**
* Whether to generate and allow a UI for managing this post type in the admin.
*
* Default is the value of $public.
*
* @since 4.6.0
* @var bool $show_ui
*/
public $show_ui = null;

/**
* Where to show the post type in the admin menu.
*
* To work, $show_ui must be true. If true, the post type is shown in its own top level menu. If false, no menu is
* shown. If a string of an existing top level menu ('tools.php' or 'edit.php?post_type=page', for example), the
* post type will be placed as a sub-menu of that.
*
* Default is the value of $show_ui.
*
* @since 4.6.0
* @var bool|string $show_in_menu
*/
public $show_in_menu = null;

/**
* Makes this post type available for selection in navigation menus.
*
* Default is the value $public.
*
* @since 4.6.0
* @var bool $show_in_nav_menus
*/
public $show_in_nav_menus = null;

/**
* Makes this post type available via the admin bar.
*
* Default is the value of $show_in_menu.
*
* @since 4.6.0
* @var bool $show_in_admin_bar
*/
public $show_in_admin_bar = null;

/**
* The position in the menu order the post type should appear.
*
* To work, $show_in_menu must be true. Default null (at the bottom).
*
* @since 4.6.0
* @var int $menu_position
*/
public $menu_position = null;

/**
* The URL or reference to the icon to be used for this menu.
*
* Pass a base64-encoded SVG using a data URI, which will be colored to match the color scheme.
* This should begin with 'data:image/svg+xml;base64,'. Pass the name of a Dashicons helper class
* to use a font icon, e.g. 'dashicons-chart-pie'. Pass 'none' to leave div.wp-menu-image empty
* so an icon can be added via CSS.
*
* Defaults to use the posts icon.
*
* @since 4.6.0
* @var string $menu_icon
*/
public $menu_icon = null;

/**
* The string to use to build the read, edit, and delete capabilities.
*
* May be passed as an array to allow for alternative plurals when using
* this argument as a base to construct the capabilities, e.g.
* array( 'story', 'stories' ). Default 'post'.
*
* @since 4.6.0
* @var string $capability_type
*/
public $capability_type = 'post';

/**
* Whether to use the internal default meta capability handling.
*
* Default false.
*
* @since 4.6.0
* @var bool $map_meta_cap
*/
public $map_meta_cap = false;

/**
* Provide a callback function that sets up the meta boxes for the edit form.
*
* Do `remove_meta_box()` and `add_meta_box()` calls in the callback. Default null.
*
* @since 4.6.0
* @var callable $register_meta_box_cb
*/
public $register_meta_box_cb = null;

/**
* An array of taxonomy identifiers that will be registered for the post type.
*
* Taxonomies can be registered later with `register_taxonomy()` or `register_taxonomy_for_object_type()`.
*
* Default empty array.
*
* @since 4.6.0
* @var string[] $taxonomies
*/
public $taxonomies = array();

/**
* Whether there should be post type archives, or if a string, the archive slug to use.
*
* Will generate the proper rewrite rules if $rewrite is enabled. Default false.
*
* @since 4.6.0
* @var bool|string $has_archive
*/
public $has_archive = false;

/**
* Sets the query_var key for this post type.
*
* Defaults to $post_type key. If false, a post type cannot be loaded at `?{query_var}={post_slug}`.
* If specified as a string, the query `?{query_var_string}={post_slug}` will be valid.
*
* @since 4.6.0
* @var string|bool $query_var
*/
public $query_var;

/**
* Whether to allow this post type to be exported.
*
* Default true.
*
* @since 4.6.0
* @var bool $can_export
*/
public $can_export = true;

/**
* Whether to delete posts of this type when deleting a user.
*
* - If true, posts of this type belonging to the user will be moved to Trash when the user is deleted.
* - If false, posts of this type belonging to the user will *not* be trashed or deleted.
* - If not set (the default), posts are trashed if post type supports the 'author' feature.
* Otherwise posts are not trashed or deleted.
*
* Default null.
*
* @since 4.6.0
* @var bool $delete_with_user
*/
public $delete_with_user = null;

/**
* Array of blocks to use as the default initial state for an editor session.
*
* Each item should be an array containing block name and optional attributes.
*
* Default empty array.
*
* @link https://developer.wordpress.org/block-editor/developers/block-api/block-templates/
*
* @since 5.0.0
* @var array[] $template
*/
public $template = array();

/**
* Whether the block template should be locked if $template is set.
*
* - If set to 'all', the user is unable to insert new blocks, move existing blocks
* and delete blocks.
* - If set to 'insert', the user is able to move existing blocks but is unable to insert
* new blocks and delete blocks.
*
* Default false.
*
* @link https://developer.wordpress.org/block-editor/developers/block-api/block-templates/
*
* @since 5.0.0
* @var string|false $template_lock
*/
public $template_lock = false;

/**
* Whether this post type is a native or "built-in" post_type.
*
* Default false.
*
* @since 4.6.0
* @var bool $_builtin
*/
public $_builtin = false;

/**
* URL segment to use for edit link of this post type.
*
* Default 'post.php?post=%d'.
*
* @since 4.6.0
* @var string $_edit_link
*/
public $_edit_link = 'post.php?post=%d';

/**
* Post type capabilities.
*
* @since 4.6.0
* @var stdClass $cap
*/
public $cap;

/**
* Triggers the handling of rewrites for this post type.
*
* Defaults to true, using $post_type as slug.
*
* @since 4.6.0
* @var array|false $rewrite
*/
public $rewrite;

/**
* The features supported by the post type.
*
* @since 4.6.0
* @var array|bool $supports
*/
public $supports;

/**
* Whether this post type should appear in the REST API.
*
* Default false. If true, standard endpoints will be registered with
* respect to $rest_base and $rest_controller_class.
*
* @since 4.7.4
* @var bool $show_in_rest
*/
public $show_in_rest;

/**
* The base path for this post type's REST API endpoints.
*
* @since 4.7.4
* @var string|bool $rest_base
*/
public $rest_base;

/**
* The namespace for this post type's REST API endpoints.
*
* @since 5.9.0
* @var string|bool $rest_namespace
*/
public $rest_namespace;

/**
* The controller for this post type's REST API endpoints.
*
* Custom controllers must extend WP_REST_Controller.
*
* @since 4.7.4
* @var string|bool $rest_controller_class
*/
public $rest_controller_class;

/**
* The controller instance for this post type's REST API endpoints.
*
* Lazily computed. Should be accessed using {@see WP_Post_Type::get_rest_controller()}.
*
* @since 5.3.0
* @var WP_REST_Controller $rest_controller
*/
public $rest_controller;

/**
* The controller for this post type's revisions REST API endpoints.
*
* Custom controllers must extend WP_REST_Controller.
*
* @since 6.4.0
* @var string|bool $revisions_rest_controller_class
*/
public $revisions_rest_controller_class;

/**
* The controller instance for this post type's revisions REST API endpoints.
*
* Lazily computed. Should be accessed using {@see WP_Post_Type::get_revisions_rest_controller()}.
*
* @since 6.4.0
* @var WP_REST_Controller $revisions_rest_controller
*/
public $revisions_rest_controller;

/**
* The controller for this post type's autosave REST API endpoints.
*
* Custom controllers must extend WP_REST_Controller.
*
* @since 6.4.0
* @var string|bool $autosave_rest_controller_class
*/
public $autosave_rest_controller_class;

/**
* The controller instance for this post type's autosave REST API endpoints.
*
* Lazily computed. Should be accessed using {@see WP_Post_Type::get_autosave_rest_controller()}.
*
* @since 6.4.0
* @var WP_REST_Controller $autosave_rest_controller
*/
public $autosave_rest_controller;

/**
* A flag to register the post type REST API controller after its associated autosave / revisions controllers, instead of before. Registration order affects route matching priority.
*
* @since 6.4.0
* @var bool $late_route_registration
*/
public $late_route_registration;

/**
* Constructor.
*
* See the register_post_type() function for accepted arguments for `$args`.
*
* Will populate object properties from the provided arguments and assign other
* default properties based on that information.
*
* @since 4.6.0
*
* @see register_post_type()
*
* @param string $post_type Post type key.
* @param array|string $args Optional. Array or string of arguments for registering a post type.
* See register_post_type() for information on accepted arguments.
* Default empty array.
*/
public function __construct( $post_type, $args = array() ) {
$this->name = $post_type;

$this->set_props( $args );
}

/**
* Sets post type properties.
*
* See the register_post_type() function for accepted arguments for `$args`.
*
* @since 4.6.0
*
* @param array|string $args Array or string of arguments for registering a post type.
*/
public function set_props( $args ) {
$args = wp_parse_args( $args );

/**
* Filters the arguments for registering a post type.
*
* @since 4.4.0
*
* @param array $args Array of arguments for registering a post type.
* See the register_post_type() function for accepted arguments.
* @param string $post_type Post type key.
*/
$args = apply_filters( 'register_post_type_args', $args, $this->name );

$post_type = $this->name;

/**
* Filters the arguments for registering a specific post type.
*
* The dynamic portion of the filter name, `$post_type`, refers to the post type key.
*
* Possible hook names include:
*
* - `register_post_post_type_args`
* - `register_page_post_type_args`
*
* @since 6.0.0
* @since 6.4.0 Added `late_route_registration`, `autosave_rest_controller_class` and `revisions_rest_controller_class` arguments.
*
* @param array $args Array of arguments for registering a post type.
* See the register_post_type() function for accepted arguments.
* @param string $post_type Post type key.
*/
$args = apply_filters( "register_{$post_type}_post_type_args", $args, $this->name );

$has_edit_link = ! empty( $args['_edit_link'] );

// Args prefixed with an underscore are reserved for internal use.
$defaults = array(
'labels' => array(),
'description' => '',
'public' => false,
'hierarchical' => false,
'exclude_from_search' => null,
'publicly_queryable' => null,
'embeddable' => null,
'show_ui' => null,
'show_in_menu' => null,
'show_in_nav_menus' => null,
'show_in_admin_bar' => null,
'menu_position' => null,
'menu_icon' => null,
'capability_type' => 'post',
'capabilities' => array(),
'map_meta_cap' => null,
'supports' => array(),
'register_meta_box_cb' => null,
'taxonomies' => array(),
'has_archive' => false,
'rewrite' => true,
'query_var' => true,
'can_export' => true,
'delete_with_user' => null,
'show_in_rest' => false,
'rest_base' => false,
'rest_namespace' => false,
'rest_controller_class' => false,
'autosave_rest_controller_class' => false,
'revisions_rest_controller_class' => false,
'late_route_registration' => false,
'template' => array(),
'template_lock' => false,
'_builtin' => false,
'_edit_link' => 'post.php?post=%d',
);

$args = array_merge( $defaults, $args );

$args['name'] = $this->name;

// If not set, default to the setting for 'public'.
if ( null === $args['publicly_queryable'] ) {
$args['publicly_queryable'] = $args['public'];
}

// If not set, default to the setting for 'public'.
if ( null === $args['show_ui'] ) {
$args['show_ui'] = $args['public'];
}

// If not set, default to the setting for 'public'.
if ( null === $args['embeddable'] ) {
$args['embeddable'] = $args['public'];
}

// If not set, default rest_namespace to wp/v2 if show_in_rest is true.
if ( false === $args['rest_namespace'] && ! empty( $args['show_in_rest'] ) ) {
$args['rest_namespace'] = 'wp/v2';
}

// If not set, default to the setting for 'show_ui'.
if ( null === $args['show_in_menu'] || ! $args['show_ui'] ) {
$args['show_in_menu'] = $args['show_ui'];
}

// If not set, default to the setting for 'show_in_menu'.
if ( null === $args['show_in_admin_bar'] ) {
$args['show_in_admin_bar'] = (bool) $args['show_in_menu'];
}

// If not set, default to the setting for 'public'.
if ( null === $args['show_in_nav_menus'] ) {
$args['show_in_nav_menus'] = $args['public'];
}

// If not set, default to true if not public, false if public.
if ( null === $args['exclude_from_search'] ) {
$args['exclude_from_search'] = ! $args['public'];
}

// Back compat with quirky handling in version 3.0. #14122.
if ( empty( $args['capabilities'] )
&& null === $args['map_meta_cap'] && in_array( $args['capability_type'], array( 'post', 'page' ), true )
) {
$args['map_meta_cap'] = true;
}

// If not set, default to false.
if ( null === $args['map_meta_cap'] ) {
$args['map_meta_cap'] = false;
}

// If there's no specified edit link and no UI, remove the edit link.
if ( ! $args['show_ui'] && ! $has_edit_link ) {
$args['_edit_link'] = '';
}

$this->cap = get_post_type_capabilities( (object) $args );
unset( $args['capabilities'] );

if ( is_array( $args['capability_type'] ) ) {
$args['capability_type'] = $args['capability_type'][0];
}

if ( false !== $args['query_var'] ) {
if ( true === $args['query_var'] ) {
$args['query_var'] = $this->name;
} else {
$args['query_var'] = sanitize_title_with_dashes( $args['query_var'] );
}
}

if ( false !== $args['rewrite'] && ( is_admin() || get_option( 'permalink_structure' ) ) ) {
if ( ! is_array( $args['rewrite'] ) ) {
$args['rewrite'] = array();
}
if ( empty( $args['rewrite']['slug'] ) ) {
$args['rewrite']['slug'] = $this->name;
}
if ( ! isset( $args['rewrite']['with_front'] ) ) {
$args['rewrite']['with_front'] = true;
}
if ( ! isset( $args['rewrite']['pages'] ) ) {
$args['rewrite']['pages'] = true;
}
if ( ! isset( $args['rewrite']['feeds'] ) || ! $args['has_archive'] ) {
$args['rewrite']['feeds'] = (bool) $args['has_archive'];
}
if ( ! isset( $args['rewrite']['ep_mask'] ) ) {
if ( isset( $args['permalink_epmask'] ) ) {
$args['rewrite']['ep_mask'] = $args['permalink_epmask'];
} else {
$args['rewrite']['ep_mask'] = EP_PERMALINK;
}
}
}

foreach ( $args as $property_name => $property_value ) {
$this->$property_name = $property_value;
}

$this->labels = get_post_type_labels( $this );
$this->label = $this->labels->name;
}

/**
* Sets the features support for the post type.
*
* @since 4.6.0
*/
public function add_supports() {
if ( ! empty( $this->supports ) ) {
foreach ( $this->supports as $feature => $args ) {
if ( is_array( $args ) ) {
add_post_type_support( $this->name, $feature, $args );
} else {
add_post_type_support( $this->name, $args );
}
}
unset( $this->supports );

/*
* 'editor' support implies 'autosave' support for backward compatibility.
* 'autosave' support needs to be explicitly removed if not desired.
*/
if (
post_type_supports( $this->name, 'editor' ) &&
! post_type_supports( $this->name, 'autosave' )
) {
add_post_type_support( $this->name, 'autosave' );
}
} elseif ( false !== $this->supports ) {
// Add default features.
add_post_type_support( $this->name, array( 'title', 'editor', 'autosave' ) );
}
}

/**
* Adds the necessary rewrite rules for the post type.
*
* @since 4.6.0
*
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
* @global WP $wp Current WordPress environment instance.
*/
public function add_rewrite_rules() {
global $wp_rewrite, $wp;

if ( false !== $this->query_var && $wp && is_post_type_viewable( $this ) ) {
$wp->add_query_var( $this->query_var );
}

if ( false !== $this->rewrite && ( is_admin() || get_option( 'permalink_structure' ) ) ) {
if ( $this->hierarchical ) {
add_rewrite_tag( "%$this->name%", '(.+?)', $this->query_var ? "{$this->query_var}=" : "post_type=$this->name&pagename=" );
} else {
add_rewrite_tag( "%$this->name%", '([^/]+)', $this->query_var ? "{$this->query_var}=" : "post_type=$this->name&name=" );
}

if ( $this->has_archive ) {
$archive_slug = true === $this->has_archive ? $this->rewrite['slug'] : $this->has_archive;
if ( $this->rewrite['with_front'] ) {
$archive_slug = substr( $wp_rewrite->front, 1 ) . $archive_slug;
} else {
$archive_slug = $wp_rewrite->root . $archive_slug;
}

add_rewrite_rule( "{$archive_slug}/?$", "index.php?post_type=$this->name", 'top' );
if ( $this->rewrite['feeds'] && $wp_rewrite->feeds ) {
$feeds = '(' . trim( implode( '|', $wp_rewrite->feeds ) ) . ')';
add_rewrite_rule( "{$archive_slug}/feed/$feeds/?$", "index.php?post_type=$this->name" . '&feed=$matches[1]', 'top' );
add_rewrite_rule( "{$archive_slug}/$feeds/?$", "index.php?post_type=$this->name" . '&feed=$matches[1]', 'top' );
}
if ( $this->rewrite['pages'] ) {
add_rewrite_rule( "{$archive_slug}/{$wp_rewrite->pagination_base}/([0-9]{1,})/?$", "index.php?post_type=$this->name" . '&paged=$matches[1]', 'top' );
}
}

$permastruct_args = $this->rewrite;
$permastruct_args['feed'] = $permastruct_args['feeds'];
add_permastruct( $this->name, "{$this->rewrite['slug']}/%$this->name%", $permastruct_args );
}
}

/**
* Registers the post type meta box if a custom callback was specified.
*
* @since 4.6.0
*/
public function register_meta_boxes() {
if ( $this->register_meta_box_cb ) {
add_action( 'add_meta_boxes_' . $this->name, $this->register_meta_box_cb, 10, 1 );
}
}

/**
* Adds the future post hook action for the post type.
*
* @since 4.6.0
*/
public function add_hooks() {
add_action( 'future_' . $this->name, '_future_post_hook', 5, 2 );
}

/**
* Registers the taxonomies for the post type.
*
* @since 4.6.0
*/
public function register_taxonomies() {
foreach ( $this->taxonomies as $taxonomy ) {
register_taxonomy_for_object_type( $taxonomy, $this->name );
}
}

/**
* Removes the features support for the post type.
*
* @since 4.6.0
*
* @global array $_wp_post_type_features Post type features.
*/
public function remove_supports() {
global $_wp_post_type_features;

unset( $_wp_post_type_features[ $this->name ] );
}

/**
* Removes any rewrite rules, permastructs, and rules for the post type.
*
* @since 4.6.0
*
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
* @global WP $wp Current WordPress environment instance.
* @global array $post_type_meta_caps Used to remove meta capabilities.
*/
public function remove_rewrite_rules() {
global $wp, $wp_rewrite, $post_type_meta_caps;

// Remove query var.
if ( false !== $this->query_var ) {
$wp->remove_query_var( $this->query_var );
}

// Remove any rewrite rules, permastructs, and rules.
if ( false !== $this->rewrite ) {
remove_rewrite_tag( "%$this->name%" );
remove_permastruct( $this->name );
foreach ( $wp_rewrite->extra_rules_top as $regex => $query ) {
if ( str_contains( $query, "index.php?post_type=$this->name" ) ) {
unset( $wp_rewrite->extra_rules_top[ $regex ] );
}
}
}

// Remove registered custom meta capabilities.
foreach ( $this->cap as $cap ) {
unset( $post_type_meta_caps[ $cap ] );
}
}

/**
* Unregisters the post type meta box if a custom callback was specified.
*
* @since 4.6.0
*/
public function unregister_meta_boxes() {
if ( $this->register_meta_box_cb ) {
remove_action( 'add_meta_boxes_' . $this->name, $this->register_meta_box_cb, 10 );
}
}

/**
* Removes the post type from all taxonomies.
*
* @since 4.6.0
*/
public function unregister_taxonomies() {
foreach ( get_object_taxonomies( $this->name ) as $taxonomy ) {
unregister_taxonomy_for_object_type( $taxonomy, $this->name );
}
}

/**
* Removes the future post hook action for the post type.
*
* @since 4.6.0
*/
public function remove_hooks() {
remove_action( 'future_' . $this->name, '_future_post_hook', 5 );
}

/**
* Gets the REST API controller for this post type.
*
* Will only instantiate the controller class once per request.
*
* @since 5.3.0
*
* @return WP_REST_Controller|null The controller instance, or null if the post type
* is set not to show in rest.
*/
public function get_rest_controller() {
if ( ! $this->show_in_rest ) {
return null;
}

$class = $this->rest_controller_class ? $this->rest_controller_class : WP_REST_Posts_Controller::class;

if ( ! class_exists( $class ) ) {
return null;
}

if ( ! is_subclass_of( $class, WP_REST_Controller::class ) ) {
return null;
}

if ( ! $this->rest_controller ) {
$this->rest_controller = new $class( $this->name );
}

if ( ! ( $this->rest_controller instanceof $class ) ) {
return null;
}

return $this->rest_controller;
}

/**
* Gets the REST API revisions controller for this post type.
*
* Will only instantiate the controller class once per request.
*
* @since 6.4.0
*
* @return WP_REST_Controller|null The controller instance, or null if the post type
* is set not to show in rest.
*/
public function get_revisions_rest_controller() {
if ( ! $this->show_in_rest ) {
return null;
}

if ( ! post_type_supports( $this->name, 'revisions' ) ) {
return null;
}

$class = $this->revisions_rest_controller_class ? $this->revisions_rest_controller_class : WP_REST_Revisions_Controller::class;
if ( ! class_exists( $class ) ) {
return null;
}

if ( ! is_subclass_of( $class, WP_REST_Controller::class ) ) {
return null;
}

if ( ! $this->revisions_rest_controller ) {
$this->revisions_rest_controller = new $class( $this->name );
}

if ( ! ( $this->revisions_rest_controller instanceof $class ) ) {
return null;
}

return $this->revisions_rest_controller;
}

/**
* Gets the REST API autosave controller for this post type.
*
* Will only instantiate the controller class once per request.
*
* @since 6.4.0
*
* @return WP_REST_Controller|null The controller instance, or null if the post type
* is set not to show in rest.
*/
public function get_autosave_rest_controller() {
if ( ! $this->show_in_rest ) {
return null;
}

if ( ! post_type_supports( $this->name, 'autosave' ) ) {
return null;
}

$class = $this->autosave_rest_controller_class ? $this->autosave_rest_controller_class : WP_REST_Autosaves_Controller::class;

if ( ! class_exists( $class ) ) {
return null;
}

if ( ! is_subclass_of( $class, WP_REST_Controller::class ) ) {
return null;
}

if ( ! $this->autosave_rest_controller ) {
$this->autosave_rest_controller = new $class( $this->name );
}

if ( ! ( $this->autosave_rest_controller instanceof $class ) ) {
return null;
}

return $this->autosave_rest_controller;
}

/**
* Returns the default labels for post types.
*
* @since 6.0.0
*
* @return (string|null)[][] The default labels for post types.
*/
public static function get_default_labels() {
if ( ! empty( self::$default_labels ) ) {
return self::$default_labels;
}

self::$default_labels = array(
'name' => array( _x( 'Posts', 'post type general name' ), _x( 'Pages', 'post type general name' ) ),
'singular_name' => array( _x( 'Post', 'post type singular name' ), _x( 'Page', 'post type singular name' ) ),
'add_new' => array( __( 'Add' ), __( 'Add' ) ),
'add_new_item' => array( __( 'Add Post' ), __( 'Add Page' ) ),
'edit_item' => array( __( 'Edit Post' ), __( 'Edit Page' ) ),
'new_item' => array( __( 'New Post' ), __( 'New Page' ) ),
'view_item' => array( __( 'View Post' ), __( 'View Page' ) ),
'view_items' => array( __( 'View Posts' ), __( 'View Pages' ) ),
'search_items' => array( __( 'Search Posts' ), __( 'Search Pages' ) ),
'not_found' => array( __( 'No posts found.' ), __( 'No pages found.' ) ),
'not_found_in_trash' => array( __( 'No posts found in Trash.' ), __( 'No pages found in Trash.' ) ),
'parent_item_colon' => array( null, __( 'Parent Page:' ) ),
'all_items' => array( __( 'All Posts' ), __( 'All Pages' ) ),
'archives' => array( __( 'Post Archives' ), __( 'Page Archives' ) ),
'attributes' => array( __( 'Post Attributes' ), __( 'Page Attributes' ) ),
'insert_into_item' => array( __( 'Insert into post' ), __( 'Insert into page' ) ),
'uploaded_to_this_item' => array( __( 'Uploaded to this post' ), __( 'Uploaded to this page' ) ),
'featured_image' => array( _x( 'Featured image', 'post' ), _x( 'Featured image', 'page' ) ),
'set_featured_image' => array( _x( 'Set featured image', 'post' ), _x( 'Set featured image', 'page' ) ),
'remove_featured_image' => array( _x( 'Remove featured image', 'post' ), _x( 'Remove featured image', 'page' ) ),
'use_featured_image' => array( _x( 'Use as featured image', 'post' ), _x( 'Use as featured image', 'page' ) ),
'filter_items_list' => array( __( 'Filter posts list' ), __( 'Filter pages list' ) ),
'filter_by_date' => array( __( 'Filter by date' ), __( 'Filter by date' ) ),
'items_list_navigation' => array( __( 'Posts list navigation' ), __( 'Pages list navigation' ) ),
'items_list' => array( __( 'Posts list' ), __( 'Pages list' ) ),
'item_published' => array( __( 'Post published.' ), __( 'Page published.' ) ),
'item_published_privately' => array( __( 'Post published privately.' ), __( 'Page published privately.' ) ),
'item_reverted_to_draft' => array( __( 'Post reverted to draft.' ), __( 'Page reverted to draft.' ) ),
'item_trashed' => array( __( 'Post trashed.' ), __( 'Page trashed.' ) ),
'item_scheduled' => array( __( 'Post scheduled.' ), __( 'Page scheduled.' ) ),
'item_updated' => array( __( 'Post updated.' ), __( 'Page updated.' ) ),
'item_link' => array(
_x( 'Post Link', 'navigation link block title' ),
_x( 'Page Link', 'navigation link block title' ),
),
'item_link_description' => array(
_x( 'A link to a post.', 'navigation link block description' ),
_x( 'A link to a page.', 'navigation link block description' ),
),
);

return self::$default_labels;
}

/**
* Resets the cache for the default labels.
*
* @since 6.0.0
*/
public static function reset_default_labels() {
self::$default_labels = array();
}
}