Ticket #36217: 36217.4.diff

src/wp-admin/includes/nav-menu.php

@@ -292 +292 @@
  * @global int        $_nav_menu_placeholder
  * @global int|string $nav_menu_selected_id
  *
- * @param string $object Not used.
- * @param string $post_type The post type object.
+ * @param string       $object    Not used.
+ * @param WP_Post_Type $post_type The post type object.
  */
 function wp_nav_menu_item_post_type_meta_box( $object, $post_type ) {
         global $_nav_menu_placeholder, $nav_menu_selected_id;

new file src/wp-includes/class-wp-post-type.php

@@ +1 @@
+<?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
+ */
+final class WP_Post_Type {
+        /**
+         * Post type key.
+         *
+         * @since 4.6.0
+         * @access public
+         * @var string $name
+         */
+        public $name;
+
+        /**
+         * Name of the post type shown in the menu. Usually plural.
+         *
+         * @since 4.6.0
+         * @access public
+         * @var string $label
+         */
+        public $label;
+
+        /**
+         * An array of labels 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
+         * @access public
+         * @var array $labels
+         */
+        public $labels;
+
+        /**
+         * A short descriptive summary of what the post type is.
+         *
+         * Default empty.
+         *
+         * @since 4.6.0
+         * @access public
+         * @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
+         * @access public
+         * @var bool $public
+         */
+        public $public = false;
+
+        /**
+         * Whether the post type is hierarchical (e.g. page).
+         *
+         * Default false.
+         *
+         * @since 4.6.0
+         * @access public
+         * @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
+         * @access public
+         * @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 {@see 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
+         * @access public
+         * @var bool $publicly_queryable
+         */
+        public $publicly_queryable = 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
+         * @access public
+         * @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 (eg. 'tools.php' or 'edit.php?post_type=page'), the post type
+         * will be placed as a sub-menu of that.
+         *
+         * Default is the value of $show_ui.
+         *
+         * @since 4.6.0
+         * @access public
+         * @var bool $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
+         * @access public
+         * @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
+         * @access public
+         * @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
+         * @access public
+         * @var int $menu_position
+         */
+        public $menu_position = null;
+
+        /**
+         * The url 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
+         * @access public
+         * @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
+         * @access public
+         * @var string $capability_type
+         */
+        public $capability_type = 'post';
+
+        /**
+         * Whether to use the internal default meta capability handling.
+         *
+         * Default false.
+         *
+         * @since 4.6.0
+         * @access public
+         * @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
+         * @access public
+         * @var string $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 {@see register_taxonomy()} or {@see register_taxonomy_for_object_type()}.
+         *
+         * Default empty array.
+         *
+         * @since 4.6.0
+         * @access public
+         * @var array $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
+         * @access public
+         * @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
+         * @access public
+         * @var string|bool $query_var
+         */
+        public $query_var;
+
+        /**
+         * Whether to allow this post type to be exported.
+         *
+         * Default true.
+         *
+         * @since 4.6.0
+         * @access public
+         * @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 then 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('author').
+         * Otherwise posts are not trashed or deleted. Default null.
+         *
+         * @since 4.6.0
+         * @access public
+         * @var bool $delete_with_user
+         */
+        public $delete_with_user = null;
+
+        /**
+         * Whether this post type is a native or "built-in" post_type.
+         *
+         * Default false.
+         *
+         * @since 4.6.0
+         * @access public
+         * @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
+         * @access public
+         * @var string $_edit_link
+         */
+        public $_edit_link = 'post.php?post=%d';
+
+
+        /**
+         * Post type capabilities.
+         *
+         * @since 4.6.0
+         * @access public
+         * @var array $cap
+         */
+        public $cap;
+
+        /**
+         * Triggers the handling of rewrites for this post type.
+         *
+         * Defaults to true, using $post_type as slug
+         *
+         * @since 4.6.0
+         * @access public
+         * @var array|false $rewrite
+         */
+        public $rewrite;
+
+        /**
+         * The features supported by the post type.
+         *
+         * @since 4.6.0
+         * @access public
+         * @var array|bool $supports
+         */
+        public $supports;
+
+        /**
+         * Constructor.
+         *
+         * Will populate object properties from the provided arguments and assign other
+         * default properties based on that information.
+         *
+         * @since 4.6.0
+         * @access public
+         *
+         * @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.
+         *                                Default empty array.
+         */
+        public function __construct( $post_type, $args = array() ) {
+                $this->name = $post_type;
+
+                $this->set_props( $args );
+        }
+
+        /**
+         * Sets post type properties.
+         *
+         * @since 4.6.0
+         * @access public
+         *
+         * @param array|string $args Array or string of arguments for registering a post type.
+         */
+        public function set_props( $args ) {
+                $args = wp_parse_args( $args );
+
+                /**
+                 * Filter the arguments for registering a post type.
+                 *
+                 * @since 4.4.0
+                 *
+                 * @param array  $args      Array of arguments for registering a post type.
+                 * @param string $post_type Post type key.
+                 */
+                $args = apply_filters( 'register_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,
+                        '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,
+                        '_builtin'             => false,
+                        '_edit_link'           => 'post.php?post=%d',
+                );
+
+                $args = (object) 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 show_ui.
+                if ( null === $args->show_in_menu || ! $args->show_ui ) {
+                        $args->show_in_menu = $args->show_ui;
+                }
+
+                // If not set, default to the whether the full UI is shown.
+                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',
+                        ) )
+                ) {
+                        $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( $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 ( get_object_vars( $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
+         * @access public
+         */
+        public function add_supports() {
+                if ( ! empty( $this->supports ) ) {
+                        add_post_type_support( $this->name, $this->supports );
+                        unset( $this->supports );
+                } elseif ( false !== $this->supports ) {
+                        // Add default features
+                        add_post_type_support( $this->name, array( 'title', 'editor' ) );
+                }
+        }
+
+        /**
+         * Adds the necessary rewrite rules for the post type.
+         *
+         * @since 4.6.0
+         * @access public
+         *
+         * @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 = $this->has_archive === true ? $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
+         * @access public
+         */
+        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
+         * @access public
+         */
+        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
+         * @access public
+         */
+        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
+         * @access public
+         *
+         * @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
+         * @access public
+         *
+         * @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 ( false !== strpos( $query, "index.php?post_type=$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
+         * @access public
+         */
+        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
+         * @access public
+         */
+        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
+         * @access public
+         */
+        public function remove_hooks() {
+                remove_action( 'future_' . $this->name, '_future_post_hook', 5 );
+        }
+}

src/wp-includes/class-wp-xmlrpc-server.php

@@ -883 +883 @@
          *
          * @access protected
          *
-         * @param object $post_type Post type object.
-         * @param array  $fields    The subset of post fields to return.
+         * @param WP_Post_Type $post_type Post type object.
+         * @param array        $fields    The subset of post fields to return.
          * @return array The prepared post type data.
          */
         protected function _prepare_post_type( $post_type, $fields ) {
@@ -922 +922 @@
                  *
                  * @since 3.4.0
                  *
-                 * @param array  $_post_type An array of post type data.
-                 * @param object $post_type  Post type object.
+                 * @param array        $_post_type An array of post type data.
+                 * @param WP_Post_Type $post_type  Post type object.
                  */
                 return apply_filters( 'xmlrpc_prepare_post_type', $_post_type, $post_type );
         }

src/wp-includes/post.php

@@ -833 +833 @@
 }
 
 /**
- * Retrieve a post type object by name.
+ * Retrieves a post type object by name.
  *
  * @since 3.0.0
  *
@@ -842 +842 @@
  * @see register_post_type()
  *
  * @param string $post_type The name of a registered post type.
- * @return object|null A post type object.
+ * @return WP_Post_Type|null WP_Post_Type object if it exists, null otherwise.
  */
 function get_post_type_object( $post_type ) {
         global $wp_post_types;
@@ -892 +892 @@
  * @since 4.4.0 The `show_ui` argument is now enforced on the post type listing screen and post editing screen.
  *
  * @global array      $wp_post_types List of post types.
- * @global WP_Rewrite $wp_rewrite    Used for default feeds.
- * @global WP         $wp            Used to add query vars.
  *
  * @param string $post_type Post type key, must not exceed 20 characters.
  * @param array|string $args {
@@ -993 +991 @@
  *     @type string      $_edit_link           FOR INTERNAL USE ONLY! URL segment to use for edit link of
  *                                             this post type. Default 'post.php?post=%d'.
  * }
- * @return object|WP_Error The registered post type object, or an error object.
+ * @return WP_Post_Type|WP_Error The registered post type object, or an error object.
  */
 function register_post_type( $post_type, $args = array() ) {
-        global $wp_post_types, $wp_rewrite, $wp;
+        global $wp_post_types;
 
         if ( ! is_array( $wp_post_types ) ) {
                 $wp_post_types = array();
@@ -1004 +1002 @@
 
         // Sanitize post type name
         $post_type = sanitize_key( $post_type );
-        $args      = wp_parse_args( $args );
-
-        /**
-         * Filter the arguments for registering a post type.
-         *
-         * @since 4.4.0
-         *
-         * @param array  $args      Array of arguments for registering a post type.
-         * @param string $post_type Post type key.
-         */
-        $args = apply_filters( 'register_post_type_args', $args, $post_type );
-
-        $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,
-                '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,
-                '_builtin'             => false,
-                '_edit_link'           => 'post.php?post=%d',
-        );
-        $args = array_merge( $defaults, $args );
-        $args = (object) $args;
-
-        $args->name = $post_type;
 
         if ( empty( $post_type ) || strlen( $post_type ) > 20 ) {
                 _doing_it_wrong( __FUNCTION__, __( 'Post type names must be between 1 and 20 characters in length.' ), '4.2' );
                 return new WP_Error( 'post_type_length_invalid', __( 'Post type names must be between 1 and 20 characters in length.' ) );
         }
 
-        // 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 show_ui.
-        if ( null === $args->show_in_menu || ! $args->show_ui )
-                $args->show_in_menu = $args->show_ui;
-
-        // If not set, default to the whether the full UI is shown.
-        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' ) ) )
-                $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 = '';
-        }
-
-        $args->cap = get_post_type_capabilities( $args );
-        unset( $args->capabilities );
-
-        if ( is_array( $args->capability_type ) )
-                $args->capability_type = $args->capability_type[0];
-
-        if ( ! empty( $args->supports ) ) {
-                add_post_type_support( $post_type, $args->supports );
-                unset( $args->supports );
-        } elseif ( false !== $args->supports ) {
-                // Add default features
-                add_post_type_support( $post_type, array( 'title', 'editor' ) );
-        }
-
-        if ( false !== $args->query_var ) {
-                if ( true === $args->query_var )
-                        $args->query_var = $post_type;
-                else
-                        $args->query_var = sanitize_title_with_dashes( $args->query_var );
-
-                if ( $wp && is_post_type_viewable( $args ) ) {
-                        $wp->add_query_var( $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'] = $post_type;
-                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;
-                }
-
-                if ( $args->hierarchical )
-                        add_rewrite_tag( "%$post_type%", '(.+?)', $args->query_var ? "{$args->query_var}=" : "post_type=$post_type&pagename=" );
-                else
-                        add_rewrite_tag( "%$post_type%", '([^/]+)', $args->query_var ? "{$args->query_var}=" : "post_type=$post_type&name=" );
-
-                if ( $args->has_archive ) {
-                        $archive_slug = $args->has_archive === true ? $args->rewrite['slug'] : $args->has_archive;
-                        if ( $args->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}/?$", "index.php?post_type=$post_type", 'top' );
-                        if ( $args->rewrite['feeds'] && $wp_rewrite->feeds ) {
-                                $feeds = '(' . trim( implode( '|', $wp_rewrite->feeds ) ) . ')';
-                                add_rewrite_rule( "{$archive_slug}/feed/$feeds/?$", "index.php?post_type=$post_type" . '&feed=$matches[1]', 'top' );
-                                add_rewrite_rule( "{$archive_slug}/$feeds/?$", "index.php?post_type=$post_type" . '&feed=$matches[1]', 'top' );
-                        }
-                        if ( $args->rewrite['pages'] )
-                                add_rewrite_rule( "{$archive_slug}/{$wp_rewrite->pagination_base}/([0-9]{1,})/?$", "index.php?post_type=$post_type" . '&paged=$matches[1]', 'top' );
-                }
-
-                $permastruct_args = $args->rewrite;
-                $permastruct_args['feed'] = $permastruct_args['feeds'];
-                add_permastruct( $post_type, "{$args->rewrite['slug']}/%$post_type%", $permastruct_args );
-        }
-
-        // Register the post type meta box if a custom callback was specified.
-        if ( $args->register_meta_box_cb )
-                add_action( 'add_meta_boxes_' . $post_type, $args->register_meta_box_cb, 10, 1 );
+        $post_type_object = new WP_Post_Type( $post_type, $args );
+        $post_type_object->add_supports();
+        $post_type_object->add_rewrite_rules();
+        $post_type_object->register_meta_boxes();
 
-        $args->labels = get_post_type_labels( $args );
-        $args->label = $args->labels->name;
+        $wp_post_types[ $post_type ] = $post_type_object;
 
-        $wp_post_types[ $post_type ] = $args;
-
-        add_action( 'future_' . $post_type, '_future_post_hook', 5, 2 );
-
-        foreach ( $args->taxonomies as $taxonomy ) {
-                register_taxonomy_for_object_type( $taxonomy, $post_type );
-        }
+        $post_type_object->add_hooks();
+        $post_type_object->register_taxonomies();
 
         /**
          * Fires after a post type is registered.
          *
          * @since 3.3.0
          *
-         * @param string $post_type Post type.
-         * @param object $args      Arguments used to register the post type.
+         * @param string       $post_type Post type.
+         * @param WP_Post_Type $args      The post type object.
          */
-        do_action( 'registered_post_type', $post_type, $args );
+        do_action( 'registered_post_type', $post_type, $post_type_object );
 
-        return $args;
+        return $post_type_object;
 }
 
 /**
@@ -1198 +1038 @@
  *
  * @since 4.5.0
  *
- * @global WP_Rewrite $wp_rewrite             WordPress rewrite component.
- * @global WP         $wp                     Current WordPress environment instance.
- * @global array      $_wp_post_type_features Used to remove post type features.
- * @global array      $post_type_meta_caps    Used to remove meta capabilities.
- * @global array      $wp_post_types          List of post types.
+ * @global array $wp_post_types List of post types.
  *
  * @param string $post_type Post type to unregister.
  * @return bool|WP_Error True on success, WP_Error on failure or if the post type doesn't exist.
  */
 function unregister_post_type( $post_type ) {
+        global $wp_post_types;
+
         if ( ! post_type_exists( $post_type ) ) {
                 return new WP_Error( 'invalid_post_type', __( 'Invalid post type' ) );
         }
 
-        $post_type_args = get_post_type_object( $post_type );
+        $post_type_object = get_post_type_object( $post_type );
 
         // Do not allow unregistering internal post types.
-        if ( $post_type_args->_builtin ) {
+        if ( $post_type_object->_builtin ) {
                 return new WP_Error( 'invalid_post_type', __( 'Unregistering a built-in post type is not allowed' ) );
         }
 
-        global $wp, $wp_rewrite, $_wp_post_type_features, $post_type_meta_caps, $wp_post_types;
-
-        // Remove query var.
-        if ( false !== $post_type_args->query_var ) {
-                $wp->remove_query_var( $post_type_args->query_var );
-        }
-
-        // Remove any rewrite rules, permastructs, and rules.
-        if ( false !== $post_type_args->rewrite ) {
-                remove_rewrite_tag( "%$post_type%" );
-                remove_permastruct( $post_type );
-                foreach ( $wp_rewrite->extra_rules_top as $regex => $query ) {
-                        if ( false !== strpos( $query, "index.php?post_type=$post_type" ) ) {
-                                unset( $wp_rewrite->extra_rules_top[ $regex ] );
-                        }
-                }
-        }
-
-        // Remove registered custom meta capabilities.
-        foreach ( $post_type_args->cap as $cap ) {
-                unset( $post_type_meta_caps[ $cap ] );
-        }
-
-        // Remove all post type support.
-        unset( $_wp_post_type_features[ $post_type ] );
-
-        // Unregister the post type meta box if a custom callback was specified.
-        if ( $post_type_args->register_meta_box_cb ) {
-                remove_action( 'add_meta_boxes_' . $post_type, $post_type_args->register_meta_box_cb );
-        }
-
-        // Remove the post type from all taxonomies.
-        foreach ( get_object_taxonomies( $post_type ) as $taxonomy ) {
-                unregister_taxonomy_for_object_type( $taxonomy, $post_type );
-        }
-
-        // Remove the future post hook action.
-        remove_action( 'future_' . $post_type, '_future_post_hook', 5 );
+        $post_type_object->remove_supports();
+        $post_type_object->remove_rewrite_rules();
+        $post_type_object->unregister_meta_boxes();
+        $post_type_object->remove_hooks();
+        $post_type_object->unregister_taxonomies();
 
-        // Remove the post type.
         unset( $wp_post_types[ $post_type ] );
 
         /**
@@ -1439 +1243 @@
  *
  * @access private
  *
- * @param object $post_type_object Post type object.
+ * @param object|WP_Post_Type $post_type_object Custom-something object or WP_Post_Type object.
  * @return object object with all the labels as member variables.
  */
 function get_post_type_labels( $post_type_object ) {

src/wp-settings.php

@@ -142 +142 @@
 require( ABSPATH . WPINC . '/post.php' );
 require( ABSPATH . WPINC . '/class-walker-page.php' );
 require( ABSPATH . WPINC . '/class-walker-page-dropdown.php' );
+require( ABSPATH . WPINC . '/class-wp-post-type.php' );
 require( ABSPATH . WPINC . '/class-wp-post.php' );
 require( ABSPATH . WPINC . '/post-template.php' );
 require( ABSPATH . WPINC . '/revision.php' );

tests/phpunit/tests/post/types.php

@@ -29 +29 @@
                 register_post_type( 'foo' );
 
                 $pobj = get_post_type_object( 'foo' );
-                $this->assertInstanceOf( 'stdClass', $pobj );
+                $this->assertInstanceOf( 'WP_Post_Type', $pobj );
                 $this->assertEquals( 'foo', $pobj->name );
 
                 // Test some defaults
@@ -554 +554 @@
          * @since 4.5.0
          *
          * @param array $args register_post_type() arguments.
-         * @return stdClass Post type object for `$this->post_type`.
+         * @return WP_Post_Type Post type object for `$this->post_type`.
          */
         public function register_post_type( $args = array() ) {
                 register_post_type( $this->post_type, $args );

new file tests/phpunit/tests/post/wpPostType.php

@@ +1 @@
+<?php
+
+/**
+ * @group post
+ */
+class Tests_WP_Post_Type extends WP_UnitTestCase {
+        public function test_instances() {
+                global $wp_post_types;
+
+                foreach ( $wp_post_types as $post_type ) {
+                        $this->assertInstanceOf( 'WP_Post_Type', $post_type );
+                }
+        }
+}