Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1552 insertions, 0 deletions

diff --git a/wp-admin/includes/nav-menu.php b/wp-admin/includes/nav-menu.php
new file mode 100644
index 0000000..704f031
--- /dev/null
+++ b/wp-admin/includes/nav-menu.php
@@ -0,0 +1,1552 @@
+<?php
+/**
+ * Core Navigation Menu API
+ *
+ * @package WordPress
+ * @subpackage Nav_Menus
+ * @since 3.0.0
+ */
+
+/** Walker_Nav_Menu_Edit class */
+require_once ABSPATH . 'wp-admin/includes/class-walker-nav-menu-edit.php';
+
+/** Walker_Nav_Menu_Checklist class */
+require_once ABSPATH . 'wp-admin/includes/class-walker-nav-menu-checklist.php';
+
+/**
+ * Prints the appropriate response to a menu quick search.
+ *
+ * @since 3.0.0
+ *
+ * @param array $request The unsanitized request values.
+ */
+function _wp_ajax_menu_quick_search( $request = array() ) {
+	$args            = array();
+	$type            = isset( $request['type'] ) ? $request['type'] : '';
+	$object_type     = isset( $request['object_type'] ) ? $request['object_type'] : '';
+	$query           = isset( $request['q'] ) ? $request['q'] : '';
+	$response_format = isset( $request['response-format'] ) ? $request['response-format'] : '';
+
+	if ( ! $response_format || ! in_array( $response_format, array( 'json', 'markup' ), true ) ) {
+		$response_format = 'json';
+	}
+
+	if ( 'markup' === $response_format ) {
+		$args['walker'] = new Walker_Nav_Menu_Checklist();
+	}
+
+	if ( 'get-post-item' === $type ) {
+		if ( post_type_exists( $object_type ) ) {
+			if ( isset( $request['ID'] ) ) {
+				$object_id = (int) $request['ID'];
+
+				if ( 'markup' === $response_format ) {
+					echo walk_nav_menu_tree(
+						array_map( 'wp_setup_nav_menu_item', array( get_post( $object_id ) ) ),
+						0,
+						(object) $args
+					);
+				} elseif ( 'json' === $response_format ) {
+					echo wp_json_encode(
+						array(
+							'ID'         => $object_id,
+							'post_title' => get_the_title( $object_id ),
+							'post_type'  => get_post_type( $object_id ),
+						)
+					);
+					echo "\n";
+				}
+			}
+		} elseif ( taxonomy_exists( $object_type ) ) {
+			if ( isset( $request['ID'] ) ) {
+				$object_id = (int) $request['ID'];
+
+				if ( 'markup' === $response_format ) {
+					echo walk_nav_menu_tree(
+						array_map( 'wp_setup_nav_menu_item', array( get_term( $object_id, $object_type ) ) ),
+						0,
+						(object) $args
+					);
+				} elseif ( 'json' === $response_format ) {
+					$post_obj = get_term( $object_id, $object_type );
+					echo wp_json_encode(
+						array(
+							'ID'         => $object_id,
+							'post_title' => $post_obj->name,
+							'post_type'  => $object_type,
+						)
+					);
+					echo "\n";
+				}
+			}
+		}
+	} elseif ( preg_match( '/quick-search-(posttype|taxonomy)-([a-zA-Z_-]*\b)/', $type, $matches ) ) {
+		if ( 'posttype' === $matches[1] && get_post_type_object( $matches[2] ) ) {
+			$post_type_obj = _wp_nav_menu_meta_box_object( get_post_type_object( $matches[2] ) );
+			$args          = array_merge(
+				$args,
+				array(
+					'no_found_rows'          => true,
+					'update_post_meta_cache' => false,
+					'update_post_term_cache' => false,
+					'posts_per_page'         => 10,
+					'post_type'              => $matches[2],
+					's'                      => $query,
+				)
+			);
+
+			if ( isset( $post_type_obj->_default_query ) ) {
+				$args = array_merge( $args, (array) $post_type_obj->_default_query );
+			}
+
+			$search_results_query = new WP_Query( $args );
+			if ( ! $search_results_query->have_posts() ) {
+				return;
+			}
+
+			while ( $search_results_query->have_posts() ) {
+				$post = $search_results_query->next_post();
+
+				if ( 'markup' === $response_format ) {
+					$var_by_ref = $post->ID;
+					echo walk_nav_menu_tree(
+						array_map( 'wp_setup_nav_menu_item', array( get_post( $var_by_ref ) ) ),
+						0,
+						(object) $args
+					);
+				} elseif ( 'json' === $response_format ) {
+					echo wp_json_encode(
+						array(
+							'ID'         => $post->ID,
+							'post_title' => get_the_title( $post->ID ),
+							'post_type'  => $matches[2],
+						)
+					);
+					echo "\n";
+				}
+			}
+		} elseif ( 'taxonomy' === $matches[1] ) {
+			$terms = get_terms(
+				array(
+					'taxonomy'   => $matches[2],
+					'name__like' => $query,
+					'number'     => 10,
+					'hide_empty' => false,
+				)
+			);
+
+			if ( empty( $terms ) || is_wp_error( $terms ) ) {
+				return;
+			}
+
+			foreach ( (array) $terms as $term ) {
+				if ( 'markup' === $response_format ) {
+					echo walk_nav_menu_tree(
+						array_map( 'wp_setup_nav_menu_item', array( $term ) ),
+						0,
+						(object) $args
+					);
+				} elseif ( 'json' === $response_format ) {
+					echo wp_json_encode(
+						array(
+							'ID'         => $term->term_id,
+							'post_title' => $term->name,
+							'post_type'  => $matches[2],
+						)
+					);
+					echo "\n";
+				}
+			}
+		}
+	}
+}
+
+/**
+ * Register nav menu meta boxes and advanced menu items.
+ *
+ * @since 3.0.0
+ */
+function wp_nav_menu_setup() {
+	// Register meta boxes.
+	wp_nav_menu_post_type_meta_boxes();
+	add_meta_box(
+		'add-custom-links',
+		__( 'Custom Links' ),
+		'wp_nav_menu_item_link_meta_box',
+		'nav-menus',
+		'side',
+		'default'
+	);
+	wp_nav_menu_taxonomy_meta_boxes();
+
+	// Register advanced menu items (columns).
+	add_filter( 'manage_nav-menus_columns', 'wp_nav_menu_manage_columns' );
+
+	// If first time editing, disable advanced items by default.
+	if ( false === get_user_option( 'managenav-menuscolumnshidden' ) ) {
+		$user = wp_get_current_user();
+		update_user_meta(
+			$user->ID,
+			'managenav-menuscolumnshidden',
+			array(
+				0 => 'link-target',
+				1 => 'css-classes',
+				2 => 'xfn',
+				3 => 'description',
+				4 => 'title-attribute',
+			)
+		);
+	}
+}
+
+/**
+ * Limit the amount of meta boxes to pages, posts, links, and categories for first time users.
+ *
+ * @since 3.0.0
+ *
+ * @global array $wp_meta_boxes
+ */
+function wp_initial_nav_menu_meta_boxes() {
+	global $wp_meta_boxes;
+
+	if ( get_user_option( 'metaboxhidden_nav-menus' ) !== false || ! is_array( $wp_meta_boxes ) ) {
+		return;
+	}
+
+	$initial_meta_boxes = array( 'add-post-type-page', 'add-post-type-post', 'add-custom-links', 'add-category' );
+	$hidden_meta_boxes  = array();
+
+	foreach ( array_keys( $wp_meta_boxes['nav-menus'] ) as $context ) {
+		foreach ( array_keys( $wp_meta_boxes['nav-menus'][ $context ] ) as $priority ) {
+			foreach ( $wp_meta_boxes['nav-menus'][ $context ][ $priority ] as $box ) {
+				if ( in_array( $box['id'], $initial_meta_boxes, true ) ) {
+					unset( $box['id'] );
+				} else {
+					$hidden_meta_boxes[] = $box['id'];
+				}
+			}
+		}
+	}
+
+	$user = wp_get_current_user();
+	update_user_meta( $user->ID, 'metaboxhidden_nav-menus', $hidden_meta_boxes );
+}
+
+/**
+ * Creates meta boxes for any post type menu item..
+ *
+ * @since 3.0.0
+ */
+function wp_nav_menu_post_type_meta_boxes() {
+	$post_types = get_post_types( array( 'show_in_nav_menus' => true ), 'object' );
+
+	if ( ! $post_types ) {
+		return;
+	}
+
+	foreach ( $post_types as $post_type ) {
+		/**
+		 * Filters whether a menu items meta box will be added for the current
+		 * object type.
+		 *
+		 * If a falsey value is returned instead of an object, the menu items
+		 * meta box for the current meta box object will not be added.
+		 *
+		 * @since 3.0.0
+		 *
+		 * @param WP_Post_Type|false $post_type The current object to add a menu items
+		 *                                      meta box for.
+		 */
+		$post_type = apply_filters( 'nav_menu_meta_box_object', $post_type );
+
+		if ( $post_type ) {
+			$id = $post_type->name;
+			// Give pages a higher priority.
+			$priority = ( 'page' === $post_type->name ? 'core' : 'default' );
+			add_meta_box(
+				"add-post-type-{$id}",
+				$post_type->labels->name,
+				'wp_nav_menu_item_post_type_meta_box',
+				'nav-menus',
+				'side',
+				$priority,
+				$post_type
+			);
+		}
+	}
+}
+
+/**
+ * Creates meta boxes for any taxonomy menu item.
+ *
+ * @since 3.0.0
+ */
+function wp_nav_menu_taxonomy_meta_boxes() {
+	$taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'object' );
+
+	if ( ! $taxonomies ) {
+		return;
+	}
+
+	foreach ( $taxonomies as $tax ) {
+		/** This filter is documented in wp-admin/includes/nav-menu.php */
+		$tax = apply_filters( 'nav_menu_meta_box_object', $tax );
+
+		if ( $tax ) {
+			$id = $tax->name;
+			add_meta_box(
+				"add-{$id}",
+				$tax->labels->name,
+				'wp_nav_menu_item_taxonomy_meta_box',
+				'nav-menus',
+				'side',
+				'default',
+				$tax
+			);
+		}
+	}
+}
+
+/**
+ * Check whether to disable the Menu Locations meta box submit button and inputs.
+ *
+ * @since 3.6.0
+ * @since 5.3.1 The `$display` parameter was added.
+ *
+ * @global bool $one_theme_location_no_menus to determine if no menus exist
+ *
+ * @param int|string $nav_menu_selected_id ID, name, or slug of the currently selected menu.
+ * @param bool       $display              Whether to display or just return the string.
+ * @return string|false Disabled attribute if at least one menu exists, false if not.
+ */
+function wp_nav_menu_disabled_check( $nav_menu_selected_id, $display = true ) {
+	global $one_theme_location_no_menus;
+
+	if ( $one_theme_location_no_menus ) {
+		return false;
+	}
+
+	return disabled( $nav_menu_selected_id, 0, $display );
+}
+
+/**
+ * Displays a meta box for the custom links menu item.
+ *
+ * @since 3.0.0
+ *
+ * @global int        $_nav_menu_placeholder
+ * @global int|string $nav_menu_selected_id
+ */
+function wp_nav_menu_item_link_meta_box() {
+	global $_nav_menu_placeholder, $nav_menu_selected_id;
+
+	$_nav_menu_placeholder = 0 > $_nav_menu_placeholder ? $_nav_menu_placeholder - 1 : -1;
+
+	?>
+	<div class="customlinkdiv" id="customlinkdiv">
+		<input type="hidden" value="custom" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-type]" />
+		<p id="menu-item-url-wrap" class="wp-clearfix">
+			<label class="howto" for="custom-menu-item-url"><?php _e( 'URL' ); ?></label>
+			<input id="custom-menu-item-url" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-url]"
+				type="text"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?>
+				class="code menu-item-textbox form-required" placeholder="https://"
+			/>
+		</p>
+
+		<p id="menu-item-name-wrap" class="wp-clearfix">
+			<label class="howto" for="custom-menu-item-name"><?php _e( 'Link Text' ); ?></label>
+			<input id="custom-menu-item-name" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-title]"
+				type="text"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?>
+				class="regular-text menu-item-textbox"
+			/>
+		</p>
+
+		<p class="button-controls wp-clearfix">
+			<span class="add-to-menu">
+				<input id="submit-customlinkdiv" name="add-custom-menu-item"
+					type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?>
+					class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>"
+				/>
+				<span class="spinner"></span>
+			</span>
+		</p>
+
+	</div><!-- /.customlinkdiv -->
+	<?php
+}
+
+/**
+ * Displays a meta box for a post type menu item.
+ *
+ * @since 3.0.0
+ *
+ * @global int        $_nav_menu_placeholder
+ * @global int|string $nav_menu_selected_id
+ *
+ * @param string $data_object Not used.
+ * @param array  $box {
+ *     Post type menu item meta box arguments.
+ *
+ *     @type string       $id       Meta box 'id' attribute.
+ *     @type string       $title    Meta box title.
+ *     @type callable     $callback Meta box display callback.
+ *     @type WP_Post_Type $args     Extra meta box arguments (the post type object for this meta box).
+ * }
+ */
+function wp_nav_menu_item_post_type_meta_box( $data_object, $box ) {
+	global $_nav_menu_placeholder, $nav_menu_selected_id;
+
+	$post_type_name = $box['args']->name;
+	$post_type      = get_post_type_object( $post_type_name );
+	$tab_name       = $post_type_name . '-tab';
+
+	// Paginate browsing for large numbers of post objects.
+	$per_page = 50;
+	$pagenum  = isset( $_REQUEST[ $tab_name ] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
+	$offset   = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;
+
+	$args = array(
+		'offset'                 => $offset,
+		'order'                  => 'ASC',
+		'orderby'                => 'title',
+		'posts_per_page'         => $per_page,
+		'post_type'              => $post_type_name,
+		'suppress_filters'       => true,
+		'update_post_term_cache' => false,
+		'update_post_meta_cache' => false,
+	);
+
+	if ( isset( $box['args']->_default_query ) ) {
+		$args = array_merge( $args, (array) $box['args']->_default_query );
+	}
+
+	/*
+	 * If we're dealing with pages, let's prioritize the Front Page,
+	 * Posts Page and Privacy Policy Page at the top of the list.
+	 */
+	$important_pages = array();
+	if ( 'page' === $post_type_name ) {
+		$suppress_page_ids = array();
+
+		// Insert Front Page or custom Home link.
+		$front_page = 'page' === get_option( 'show_on_front' ) ? (int) get_option( 'page_on_front' ) : 0;
+
+		$front_page_obj = null;
+
+		if ( ! empty( $front_page ) ) {
+			$front_page_obj = get_post( $front_page );
+		}
+
+		if ( $front_page_obj ) {
+			$front_page_obj->front_or_home = true;
+
+			$important_pages[]   = $front_page_obj;
+			$suppress_page_ids[] = $front_page_obj->ID;
+		} else {
+			$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? (int) $_nav_menu_placeholder - 1 : -1;
+			$front_page_obj        = (object) array(
+				'front_or_home' => true,
+				'ID'            => 0,
+				'object_id'     => $_nav_menu_placeholder,
+				'post_content'  => '',
+				'post_excerpt'  => '',
+				'post_parent'   => '',
+				'post_title'    => _x( 'Home', 'nav menu home label' ),
+				'post_type'     => 'nav_menu_item',
+				'type'          => 'custom',
+				'url'           => home_url( '/' ),
+			);
+
+			$important_pages[] = $front_page_obj;
+		}
+
+		// Insert Posts Page.
+		$posts_page = 'page' === get_option( 'show_on_front' ) ? (int) get_option( 'page_for_posts' ) : 0;
+
+		if ( ! empty( $posts_page ) ) {
+			$posts_page_obj = get_post( $posts_page );
+
+			if ( $posts_page_obj ) {
+				$front_page_obj->posts_page = true;
+
+				$important_pages[]   = $posts_page_obj;
+				$suppress_page_ids[] = $posts_page_obj->ID;
+			}
+		}
+
+		// Insert Privacy Policy Page.
+		$privacy_policy_page_id = (int) get_option( 'wp_page_for_privacy_policy' );
+
+		if ( ! empty( $privacy_policy_page_id ) ) {
+			$privacy_policy_page = get_post( $privacy_policy_page_id );
+
+			if ( $privacy_policy_page instanceof WP_Post && 'publish' === $privacy_policy_page->post_status ) {
+				$privacy_policy_page->privacy_policy_page = true;
+
+				$important_pages[]   = $privacy_policy_page;
+				$suppress_page_ids[] = $privacy_policy_page->ID;
+			}
+		}
+
+		// Add suppression array to arguments for WP_Query.
+		if ( ! empty( $suppress_page_ids ) ) {
+			$args['post__not_in'] = $suppress_page_ids;
+		}
+	}
+
+	// @todo Transient caching of these results with proper invalidation on updating of a post of this type.
+	$get_posts = new WP_Query();
+	$posts     = $get_posts->query( $args );
+
+	// Only suppress and insert when more than just suppression pages available.
+	if ( ! $get_posts->post_count ) {
+		if ( ! empty( $suppress_page_ids ) ) {
+			unset( $args['post__not_in'] );
+			$get_posts = new WP_Query();
+			$posts     = $get_posts->query( $args );
+		} else {
+			echo '<p>' . __( 'No items.' ) . '</p>';
+			return;
+		}
+	} elseif ( ! empty( $important_pages ) ) {
+		$posts = array_merge( $important_pages, $posts );
+	}
+
+	$num_pages = $get_posts->max_num_pages;
+
+	$page_links = paginate_links(
+		array(
+			'base'               => add_query_arg(
+				array(
+					$tab_name     => 'all',
+					'paged'       => '%#%',
+					'item-type'   => 'post_type',
+					'item-object' => $post_type_name,
+				)
+			),
+			'format'             => '',
+			'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
+			'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
+			/* translators: Hidden accessibility text. */
+			'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
+			'total'              => $num_pages,
+			'current'            => $pagenum,
+		)
+	);
+
+	$db_fields = false;
+	if ( is_post_type_hierarchical( $post_type_name ) ) {
+		$db_fields = array(
+			'parent' => 'post_parent',
+			'id'     => 'ID',
+		);
+	}
+
+	$walker = new Walker_Nav_Menu_Checklist( $db_fields );
+
+	$current_tab = 'most-recent';
+
+	if ( isset( $_REQUEST[ $tab_name ] ) && in_array( $_REQUEST[ $tab_name ], array( 'all', 'search' ), true ) ) {
+		$current_tab = $_REQUEST[ $tab_name ];
+	}
+
+	if ( ! empty( $_REQUEST[ "quick-search-posttype-{$post_type_name}" ] ) ) {
+		$current_tab = 'search';
+	}
+
+	$removed_args = array(
+		'action',
+		'customlink-tab',
+		'edit-menu-item',
+		'menu-item',
+		'page-tab',
+		'_wpnonce',
+	);
+
+	$most_recent_url = '';
+	$view_all_url    = '';
+	$search_url      = '';
+
+	if ( $nav_menu_selected_id ) {
+		$most_recent_url = add_query_arg( $tab_name, 'most-recent', remove_query_arg( $removed_args ) );
+		$view_all_url    = add_query_arg( $tab_name, 'all', remove_query_arg( $removed_args ) );
+		$search_url      = add_query_arg( $tab_name, 'search', remove_query_arg( $removed_args ) );
+	}
+	?>
+	<div id="<?php echo esc_attr( "posttype-{$post_type_name}" ); ?>" class="posttypediv">
+		<ul id="<?php echo esc_attr( "posttype-{$post_type_name}-tabs" ); ?>" class="posttype-tabs add-menu-item-tabs">
+			<li <?php echo ( 'most-recent' === $current_tab ? ' class="tabs"' : '' ); ?>>
+				<a class="nav-tab-link"
+					data-type="<?php echo esc_attr( "tabs-panel-posttype-{$post_type_name}-most-recent" ); ?>"
+					href="<?php echo esc_url( $most_recent_url . "#tabs-panel-posttype-{$post_type_name}-most-recent" ); ?>"
+				>
+					<?php _e( 'Most Recent' ); ?>
+				</a>
+			</li>
+			<li <?php echo ( 'all' === $current_tab ? ' class="tabs"' : '' ); ?>>
+				<a class="nav-tab-link"
+					data-type="<?php echo esc_attr( "{$post_type_name}-all" ); ?>"
+					href="<?php echo esc_url( $view_all_url . "#{$post_type_name}-all" ); ?>"
+				>
+					<?php _e( 'View All' ); ?>
+				</a>
+			</li>
+			<li <?php echo ( 'search' === $current_tab ? ' class="tabs"' : '' ); ?>>
+				<a class="nav-tab-link"
+					data-type="<?php echo esc_attr( "tabs-panel-posttype-{$post_type_name}-search" ); ?>"
+					href="<?php echo esc_url( $search_url . "#tabs-panel-posttype-{$post_type_name}-search" ); ?>"
+				>
+					<?php _e( 'Search' ); ?>
+				</a>
+			</li>
+		</ul><!-- .posttype-tabs -->
+
+		<div id="<?php echo esc_attr( "tabs-panel-posttype-{$post_type_name}-most-recent" ); ?>"
+			class="tabs-panel <?php echo ( 'most-recent' === $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>"
+			role="region" aria-label="<?php esc_attr_e( 'Most Recent' ); ?>" tabindex="0"
+		>
+			<ul id="<?php echo esc_attr( "{$post_type_name}checklist-most-recent" ); ?>"
+				class="categorychecklist form-no-clear"
+			>
+				<?php
+				$recent_args = array_merge(
+					$args,
+					array(
+						'orderby'        => 'post_date',
+						'order'          => 'DESC',
+						'posts_per_page' => 15,
+					)
+				);
+				$most_recent = $get_posts->query( $recent_args );
+
+				$args['walker'] = $walker;
+
+				/**
+				 * Filters the posts displayed in the 'Most Recent' tab of the current
+				 * post type's menu items meta box.
+				 *
+				 * The dynamic portion of the hook name, `$post_type_name`, refers to the post type name.
+				 *
+				 * Possible hook names include:
+				 *
+				 *  - `nav_menu_items_post_recent`
+				 *  - `nav_menu_items_page_recent`
+				 *
+				 * @since 4.3.0
+				 * @since 4.9.0 Added the `$recent_args` parameter.
+				 *
+				 * @param WP_Post[] $most_recent An array of post objects being listed.
+				 * @param array     $args        An array of `WP_Query` arguments for the meta box.
+				 * @param array     $box         Arguments passed to `wp_nav_menu_item_post_type_meta_box()`.
+				 * @param array     $recent_args An array of `WP_Query` arguments for 'Most Recent' tab.
+				 */
+				$most_recent = apply_filters(
+					"nav_menu_items_{$post_type_name}_recent",
+					$most_recent,
+					$args,
+					$box,
+					$recent_args
+				);
+
+				echo walk_nav_menu_tree(
+					array_map( 'wp_setup_nav_menu_item', $most_recent ),
+					0,
+					(object) $args
+				);
+				?>
+			</ul>
+		</div><!-- /.tabs-panel -->
+
+		<div id="<?php echo esc_attr( "tabs-panel-posttype-{$post_type_name}-search" ); ?>"
+			class="tabs-panel <?php echo ( 'search' === $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>"
+			role="region" aria-label="<?php echo esc_attr( $post_type->labels->search_items ); ?>" tabindex="0"
+		>
+			<?php
+			if ( isset( $_REQUEST[ "quick-search-posttype-{$post_type_name}" ] ) ) {
+				$searched       = esc_attr( $_REQUEST[ "quick-search-posttype-{$post_type_name}" ] );
+				$search_results = get_posts(
+					array(
+						's'         => $searched,
+						'post_type' => $post_type_name,
+						'fields'    => 'all',
+						'order'     => 'DESC',
+					)
+				);
+			} else {
+				$searched       = '';
+				$search_results = array();
+			}
+			?>
+			<p class="quick-search-wrap">
+				<label for="<?php echo esc_attr( "quick-search-posttype-{$post_type_name}" ); ?>" class="screen-reader-text">
+					<?php
+					/* translators: Hidden accessibility text. */
+					_e( 'Search' );
+					?>
+				</label>
+				<input type="search"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?>
+					class="quick-search" value="<?php echo $searched; ?>"
+					name="<?php echo esc_attr( "quick-search-posttype-{$post_type_name}" ); ?>"
+					id="<?php echo esc_attr( "quick-search-posttype-{$post_type_name}" ); ?>"
+				/>
+				<span class="spinner"></span>
+				<?php
+				submit_button(
+					__( 'Search' ),
+					'small quick-search-submit hide-if-js',
+					'submit',
+					false,
+					array( 'id' => "submit-quick-search-posttype-{$post_type_name}" )
+				);
+				?>
+			</p>
+
+			<ul id="<?php echo esc_attr( "{$post_type_name}-search-checklist" ); ?>"
+				data-wp-lists="<?php echo esc_attr( "list:{$post_type_name}" ); ?>"
+				class="categorychecklist form-no-clear"
+			>
+			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
+				<?php
+				$args['walker'] = $walker;
+				echo walk_nav_menu_tree(
+					array_map( 'wp_setup_nav_menu_item', $search_results ),
+					0,
+					(object) $args
+				);
+				?>
+			<?php elseif ( is_wp_error( $search_results ) ) : ?>
+				<li><?php echo $search_results->get_error_message(); ?></li>
+			<?php elseif ( ! empty( $searched ) ) : ?>
+				<li><?php _e( 'No results found.' ); ?></li>
+			<?php endif; ?>
+			</ul>
+		</div><!-- /.tabs-panel -->
+
+		<div id="<?php echo esc_attr( "{$post_type_name}-all" ); ?>"
+			class="tabs-panel tabs-panel-view-all <?php echo ( 'all' === $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>"
+			role="region" aria-label="<?php echo esc_attr( $post_type->labels->all_items ); ?>" tabindex="0"
+		>
+			<?php if ( ! empty( $page_links ) ) : ?>
+				<div class="add-menu-item-pagelinks">
+					<?php echo $page_links; ?>
+				</div>
+			<?php endif; ?>
+
+			<ul id="<?php echo esc_attr( "{$post_type_name}checklist" ); ?>"
+				data-wp-lists="<?php echo esc_attr( "list:{$post_type_name}" ); ?>"
+				class="categorychecklist form-no-clear"
+			>
+				<?php
+				$args['walker'] = $walker;
+
+				if ( $post_type->has_archive ) {
+					$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? (int) $_nav_menu_placeholder - 1 : -1;
+					array_unshift(
+						$posts,
+						(object) array(
+							'ID'           => 0,
+							'object_id'    => $_nav_menu_placeholder,
+							'object'       => $post_type_name,
+							'post_content' => '',
+							'post_excerpt' => '',
+							'post_title'   => $post_type->labels->archives,
+							'post_type'    => 'nav_menu_item',
+							'type'         => 'post_type_archive',
+							'url'          => get_post_type_archive_link( $post_type_name ),
+						)
+					);
+				}
+
+				/**
+				 * Filters the posts displayed in the 'View All' tab of the current
+				 * post type's menu items meta box.
+				 *
+				 * The dynamic portion of the hook name, `$post_type_name`, refers
+				 * to the slug of the current post type.
+				 *
+				 * Possible hook names include:
+				 *
+				 *  - `nav_menu_items_post`
+				 *  - `nav_menu_items_page`
+				 *
+				 * @since 3.2.0
+				 * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
+				 *
+				 * @see WP_Query::query()
+				 *
+				 * @param object[]     $posts     The posts for the current post type. Mostly `WP_Post` objects, but
+				 *                                can also contain "fake" post objects to represent other menu items.
+				 * @param array        $args      An array of `WP_Query` arguments.
+				 * @param WP_Post_Type $post_type The current post type object for this menu item meta box.
+				 */
+				$posts = apply_filters(
+					"nav_menu_items_{$post_type_name}",
+					$posts,
+					$args,
+					$post_type
+				);
+
+				$checkbox_items = walk_nav_menu_tree(
+					array_map( 'wp_setup_nav_menu_item', $posts ),
+					0,
+					(object) $args
+				);
+
+				echo $checkbox_items;
+				?>
+			</ul>
+
+			<?php if ( ! empty( $page_links ) ) : ?>
+				<div class="add-menu-item-pagelinks">
+					<?php echo $page_links; ?>
+				</div>
+			<?php endif; ?>
+		</div><!-- /.tabs-panel -->
+
+		<p class="button-controls wp-clearfix" data-items-type="<?php echo esc_attr( "posttype-{$post_type_name}" ); ?>">
+			<span class="list-controls hide-if-no-js">
+				<input type="checkbox"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?>
+					id="<?php echo esc_attr( $tab_name ); ?>" class="select-all"
+				/>
+				<label for="<?php echo esc_attr( $tab_name ); ?>"><?php _e( 'Select All' ); ?></label>
+			</span>
+
+			<span class="add-to-menu">
+				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?>
+					class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>"
+					name="add-post-type-menu-item" id="<?php echo esc_attr( "submit-posttype-{$post_type_name}" ); ?>"
+				/>
+				<span class="spinner"></span>
+			</span>
+		</p>
+
+	</div><!-- /.posttypediv -->
+	<?php
+}
+
+/**
+ * Displays a meta box for a taxonomy menu item.
+ *
+ * @since 3.0.0
+ *
+ * @global int|string $nav_menu_selected_id
+ *
+ * @param string $data_object Not used.
+ * @param array  $box {
+ *     Taxonomy menu item meta box arguments.
+ *
+ *     @type string   $id       Meta box 'id' attribute.
+ *     @type string   $title    Meta box title.
+ *     @type callable $callback Meta box display callback.
+ *     @type object   $args     Extra meta box arguments (the taxonomy object for this meta box).
+ * }
+ */
+function wp_nav_menu_item_taxonomy_meta_box( $data_object, $box ) {
+	global $nav_menu_selected_id;
+
+	$taxonomy_name = $box['args']->name;
+	$taxonomy      = get_taxonomy( $taxonomy_name );
+	$tab_name      = $taxonomy_name . '-tab';
+
+	// Paginate browsing for large numbers of objects.
+	$per_page = 50;
+	$pagenum  = isset( $_REQUEST[ $tab_name ] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
+	$offset   = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;
+
+	$args = array(
+		'taxonomy'     => $taxonomy_name,
+		'child_of'     => 0,
+		'exclude'      => '',
+		'hide_empty'   => false,
+		'hierarchical' => 1,
+		'include'      => '',
+		'number'       => $per_page,
+		'offset'       => $offset,
+		'order'        => 'ASC',
+		'orderby'      => 'name',
+		'pad_counts'   => false,
+	);
+
+	$terms = get_terms( $args );
+
+	if ( ! $terms || is_wp_error( $terms ) ) {
+		echo '<p>' . __( 'No items.' ) . '</p>';
+		return;
+	}
+
+	$num_pages = ceil(
+		wp_count_terms(
+			array_merge(
+				$args,
+				array(
+					'number' => '',
+					'offset' => '',
+				)
+			)
+		) / $per_page
+	);
+
+	$page_links = paginate_links(
+		array(
+			'base'               => add_query_arg(
+				array(
+					$tab_name     => 'all',
+					'paged'       => '%#%',
+					'item-type'   => 'taxonomy',
+					'item-object' => $taxonomy_name,
+				)
+			),
+			'format'             => '',
+			'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
+			'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
+			/* translators: Hidden accessibility text. */
+			'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
+			'total'              => $num_pages,
+			'current'            => $pagenum,
+		)
+	);
+
+	$db_fields = false;
+	if ( is_taxonomy_hierarchical( $taxonomy_name ) ) {
+		$db_fields = array(
+			'parent' => 'parent',
+			'id'     => 'term_id',
+		);
+	}
+
+	$walker = new Walker_Nav_Menu_Checklist( $db_fields );
+
+	$current_tab = 'most-used';
+
+	if ( isset( $_REQUEST[ $tab_name ] ) && in_array( $_REQUEST[ $tab_name ], array( 'all', 'most-used', 'search' ), true ) ) {
+		$current_tab = $_REQUEST[ $tab_name ];
+	}
+
+	if ( ! empty( $_REQUEST[ "quick-search-taxonomy-{$taxonomy_name}" ] ) ) {
+		$current_tab = 'search';
+	}
+
+	$removed_args = array(
+		'action',
+		'customlink-tab',
+		'edit-menu-item',
+		'menu-item',
+		'page-tab',
+		'_wpnonce',
+	);
+
+	$most_used_url = '';
+	$view_all_url  = '';
+	$search_url    = '';
+
+	if ( $nav_menu_selected_id ) {
+		$most_used_url = add_query_arg( $tab_name, 'most-used', remove_query_arg( $removed_args ) );
+		$view_all_url  = add_query_arg( $tab_name, 'all', remove_query_arg( $removed_args ) );
+		$search_url    = add_query_arg( $tab_name, 'search', remove_query_arg( $removed_args ) );
+	}
+	?>
+	<div id="<?php echo esc_attr( "taxonomy-{$taxonomy_name}" ); ?>" class="taxonomydiv">
+		<ul id="<?php echo esc_attr( "taxonomy-{$taxonomy_name}-tabs" ); ?>" class="taxonomy-tabs add-menu-item-tabs">
+			<li <?php echo ( 'most-used' === $current_tab ? ' class="tabs"' : '' ); ?>>
+				<a class="nav-tab-link"
+					data-type="<?php echo esc_attr( "tabs-panel-{$taxonomy_name}-pop" ); ?>"
+					href="<?php echo esc_url( $most_used_url . "#tabs-panel-{$taxonomy_name}-pop" ); ?>"
+				>
+					<?php echo esc_html( $taxonomy->labels->most_used ); ?>
+				</a>
+			</li>
+			<li <?php echo ( 'all' === $current_tab ? ' class="tabs"' : '' ); ?>>
+				<a class="nav-tab-link"
+					data-type="<?php echo esc_attr( "tabs-panel-{$taxonomy_name}-all" ); ?>"
+					href="<?php echo esc_url( $view_all_url . "#tabs-panel-{$taxonomy_name}-all" ); ?>"
+				>
+					<?php _e( 'View All' ); ?>
+				</a>
+			</li>
+			<li <?php echo ( 'search' === $current_tab ? ' class="tabs"' : '' ); ?>>
+				<a class="nav-tab-link"
+					data-type="<?php echo esc_attr( "tabs-panel-search-taxonomy-{$taxonomy_name}" ); ?>"
+					href="<?php echo esc_url( $search_url . "#tabs-panel-search-taxonomy-{$taxonomy_name}" ); ?>"
+				>
+					<?php _e( 'Search' ); ?>
+				</a>
+			</li>
+		</ul><!-- .taxonomy-tabs -->
+
+		<div id="<?php echo esc_attr( "tabs-panel-{$taxonomy_name}-pop" ); ?>"
+			class="tabs-panel <?php echo ( 'most-used' === $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>"
+			role="region" aria-label="<?php echo esc_attr( $taxonomy->labels->most_used ); ?>" tabindex="0"
+		>
+			<ul id="<?php echo esc_attr( "{$taxonomy_name}checklist-pop" ); ?>"
+				class="categorychecklist form-no-clear"
+			>
+				<?php
+				$popular_terms = get_terms(
+					array(
+						'taxonomy'     => $taxonomy_name,
+						'orderby'      => 'count',
+						'order'        => 'DESC',
+						'number'       => 10,
+						'hierarchical' => false,
+					)
+				);
+
+				$args['walker'] = $walker;
+				echo walk_nav_menu_tree(
+					array_map( 'wp_setup_nav_menu_item', $popular_terms ),
+					0,
+					(object) $args
+				);
+				?>
+			</ul>
+		</div><!-- /.tabs-panel -->
+
+		<div id="<?php echo esc_attr( "tabs-panel-{$taxonomy_name}-all" ); ?>"
+			class="tabs-panel tabs-panel-view-all <?php echo ( 'all' === $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>"
+			role="region" aria-label="<?php echo esc_attr( $taxonomy->labels->all_items ); ?>" tabindex="0"
+		>
+			<?php if ( ! empty( $page_links ) ) : ?>
+				<div class="add-menu-item-pagelinks">
+					<?php echo $page_links; ?>
+				</div>
+			<?php endif; ?>
+
+			<ul id="<?php echo esc_attr( "{$taxonomy_name}checklist" ); ?>"
+				data-wp-lists="<?php echo esc_attr( "list:{$taxonomy_name}" ); ?>"
+				class="categorychecklist form-no-clear"
+			>
+				<?php
+				$args['walker'] = $walker;
+				echo walk_nav_menu_tree(
+					array_map( 'wp_setup_nav_menu_item', $terms ),
+					0,
+					(object) $args
+				);
+				?>
+			</ul>
+
+			<?php if ( ! empty( $page_links ) ) : ?>
+				<div class="add-menu-item-pagelinks">
+					<?php echo $page_links; ?>
+				</div>
+			<?php endif; ?>
+		</div><!-- /.tabs-panel -->
+
+		<div id="<?php echo esc_attr( "tabs-panel-search-taxonomy-{$taxonomy_name}" ); ?>"
+			class="tabs-panel <?php echo ( 'search' === $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>"
+			role="region" aria-label="<?php echo esc_attr( $taxonomy->labels->search_items ); ?>" tabindex="0">
+			<?php
+			if ( isset( $_REQUEST[ "quick-search-taxonomy-{$taxonomy_name}" ] ) ) {
+				$searched       = esc_attr( $_REQUEST[ "quick-search-taxonomy-{$taxonomy_name}" ] );
+				$search_results = get_terms(
+					array(
+						'taxonomy'     => $taxonomy_name,
+						'name__like'   => $searched,
+						'fields'       => 'all',
+						'orderby'      => 'count',
+						'order'        => 'DESC',
+						'hierarchical' => false,
+					)
+				);
+			} else {
+				$searched       = '';
+				$search_results = array();
+			}
+			?>
+			<p class="quick-search-wrap">
+				<label for="<?php echo esc_attr( "quick-search-taxonomy-{$taxonomy_name}" ); ?>" class="screen-reader-text">
+					<?php
+					/* translators: Hidden accessibility text. */
+					_e( 'Search' );
+					?>
+				</label>
+				<input type="search"
+					class="quick-search" value="<?php echo $searched; ?>"
+					name="<?php echo esc_attr( "quick-search-taxonomy-{$taxonomy_name}" ); ?>"
+					id="<?php echo esc_attr( "quick-search-taxonomy-{$taxonomy_name}" ); ?>"
+				/>
+				<span class="spinner"></span>
+				<?php
+				submit_button(
+					__( 'Search' ),
+					'small quick-search-submit hide-if-js',
+					'submit',
+					false,
+					array( 'id' => "submit-quick-search-taxonomy-{$taxonomy_name}" )
+				);
+				?>
+			</p>
+
+			<ul id="<?php echo esc_attr( "{$taxonomy_name}-search-checklist" ); ?>"
+				data-wp-lists="<?php echo esc_attr( "list:{$taxonomy_name}" ); ?>"
+				class="categorychecklist form-no-clear"
+			>
+			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
+				<?php
+				$args['walker'] = $walker;
+				echo walk_nav_menu_tree(
+					array_map( 'wp_setup_nav_menu_item', $search_results ),
+					0,
+					(object) $args
+				);
+				?>
+			<?php elseif ( is_wp_error( $search_results ) ) : ?>
+				<li><?php echo $search_results->get_error_message(); ?></li>
+			<?php elseif ( ! empty( $searched ) ) : ?>
+				<li><?php _e( 'No results found.' ); ?></li>
+			<?php endif; ?>
+			</ul>
+		</div><!-- /.tabs-panel -->
+
+		<p class="button-controls wp-clearfix" data-items-type="<?php echo esc_attr( "taxonomy-{$taxonomy_name}" ); ?>">
+			<span class="list-controls hide-if-no-js">
+				<input type="checkbox"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?>
+					id="<?php echo esc_attr( $tab_name ); ?>" class="select-all"
+				/>
+				<label for="<?php echo esc_attr( $tab_name ); ?>"><?php _e( 'Select All' ); ?></label>
+			</span>
+
+			<span class="add-to-menu">
+				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?>
+					class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>"
+					name="add-taxonomy-menu-item" id="<?php echo esc_attr( "submit-taxonomy-{$taxonomy_name}" ); ?>"
+				/>
+				<span class="spinner"></span>
+			</span>
+		</p>
+
+	</div><!-- /.taxonomydiv -->
+	<?php
+}
+
+/**
+ * Save posted nav menu item data.
+ *
+ * @since 3.0.0
+ *
+ * @param int     $menu_id   The menu ID for which to save this item. Value of 0 makes a draft, orphaned menu item. Default 0.
+ * @param array[] $menu_data The unsanitized POSTed menu item data.
+ * @return int[] The database IDs of the items saved
+ */
+function wp_save_nav_menu_items( $menu_id = 0, $menu_data = array() ) {
+	$menu_id     = (int) $menu_id;
+	$items_saved = array();
+
+	if ( 0 === $menu_id || is_nav_menu( $menu_id ) ) {
+
+		// Loop through all the menu items' POST values.
+		foreach ( (array) $menu_data as $_possible_db_id => $_item_object_data ) {
+			if (
+				// Checkbox is not checked.
+				empty( $_item_object_data['menu-item-object-id'] ) &&
+				(
+					// And item type either isn't set.
+					! isset( $_item_object_data['menu-item-type'] ) ||
+					// Or URL is the default.
+					in_array( $_item_object_data['menu-item-url'], array( 'https://', 'http://', '' ), true ) ||
+					// Or it's not a custom menu item (but not the custom home page).
+					! ( 'custom' === $_item_object_data['menu-item-type'] && ! isset( $_item_object_data['menu-item-db-id'] ) ) ||
+					// Or it *is* a custom menu item that already exists.
+					! empty( $_item_object_data['menu-item-db-id'] )
+				)
+			) {
+				// Then this potential menu item is not getting added to this menu.
+				continue;
+			}
+
+			// If this possible menu item doesn't actually have a menu database ID yet.
+			if (
+				empty( $_item_object_data['menu-item-db-id'] ) ||
+				( 0 > $_possible_db_id ) ||
+				$_possible_db_id !== (int) $_item_object_data['menu-item-db-id']
+			) {
+				$_actual_db_id = 0;
+			} else {
+				$_actual_db_id = (int) $_item_object_data['menu-item-db-id'];
+			}
+
+			$args = array(
+				'menu-item-db-id'       => ( isset( $_item_object_data['menu-item-db-id'] ) ? $_item_object_data['menu-item-db-id'] : '' ),
+				'menu-item-object-id'   => ( isset( $_item_object_data['menu-item-object-id'] ) ? $_item_object_data['menu-item-object-id'] : '' ),
+				'menu-item-object'      => ( isset( $_item_object_data['menu-item-object'] ) ? $_item_object_data['menu-item-object'] : '' ),
+				'menu-item-parent-id'   => ( isset( $_item_object_data['menu-item-parent-id'] ) ? $_item_object_data['menu-item-parent-id'] : '' ),
+				'menu-item-position'    => ( isset( $_item_object_data['menu-item-position'] ) ? $_item_object_data['menu-item-position'] : '' ),
+				'menu-item-type'        => ( isset( $_item_object_data['menu-item-type'] ) ? $_item_object_data['menu-item-type'] : '' ),
+				'menu-item-title'       => ( isset( $_item_object_data['menu-item-title'] ) ? $_item_object_data['menu-item-title'] : '' ),
+				'menu-item-url'         => ( isset( $_item_object_data['menu-item-url'] ) ? $_item_object_data['menu-item-url'] : '' ),
+				'menu-item-description' => ( isset( $_item_object_data['menu-item-description'] ) ? $_item_object_data['menu-item-description'] : '' ),
+				'menu-item-attr-title'  => ( isset( $_item_object_data['menu-item-attr-title'] ) ? $_item_object_data['menu-item-attr-title'] : '' ),
+				'menu-item-target'      => ( isset( $_item_object_data['menu-item-target'] ) ? $_item_object_data['menu-item-target'] : '' ),
+				'menu-item-classes'     => ( isset( $_item_object_data['menu-item-classes'] ) ? $_item_object_data['menu-item-classes'] : '' ),
+				'menu-item-xfn'         => ( isset( $_item_object_data['menu-item-xfn'] ) ? $_item_object_data['menu-item-xfn'] : '' ),
+			);
+
+			$items_saved[] = wp_update_nav_menu_item( $menu_id, $_actual_db_id, $args );
+
+		}
+	}
+
+	return $items_saved;
+}
+
+/**
+ * Adds custom arguments to some of the meta box object types.
+ *
+ * @since 3.0.0
+ *
+ * @access private
+ *
+ * @param object $data_object The post type or taxonomy meta-object.
+ * @return object The post type or taxonomy object.
+ */
+function _wp_nav_menu_meta_box_object( $data_object = null ) {
+	if ( isset( $data_object->name ) ) {
+
+		if ( 'page' === $data_object->name ) {
+			$data_object->_default_query = array(
+				'orderby'     => 'menu_order title',
+				'post_status' => 'publish',
+			);
+
+			// Posts should show only published items.
+		} elseif ( 'post' === $data_object->name ) {
+			$data_object->_default_query = array(
+				'post_status' => 'publish',
+			);
+
+			// Categories should be in reverse chronological order.
+		} elseif ( 'category' === $data_object->name ) {
+			$data_object->_default_query = array(
+				'orderby' => 'id',
+				'order'   => 'DESC',
+			);
+
+			// Custom post types should show only published items.
+		} else {
+			$data_object->_default_query = array(
+				'post_status' => 'publish',
+			);
+		}
+	}
+
+	return $data_object;
+}
+
+/**
+ * Returns the menu formatted to edit.
+ *
+ * @since 3.0.0
+ *
+ * @param int $menu_id Optional. The ID of the menu to format. Default 0.
+ * @return string|WP_Error The menu formatted to edit or error object on failure.
+ */
+function wp_get_nav_menu_to_edit( $menu_id = 0 ) {
+	$menu = wp_get_nav_menu_object( $menu_id );
+
+	// If the menu exists, get its items.
+	if ( is_nav_menu( $menu ) ) {
+		$menu_items = wp_get_nav_menu_items( $menu->term_id, array( 'post_status' => 'any' ) );
+		$result     = '<div id="menu-instructions" class="post-body-plain';
+		$result    .= ( ! empty( $menu_items ) ) ? ' menu-instructions-inactive">' : '">';
+		$result    .= '<p>' . __( 'Add menu items from the column on the left.' ) . '</p>';
+		$result    .= '</div>';
+
+		if ( empty( $menu_items ) ) {
+			return $result . ' <ul class="menu" id="menu-to-edit"> </ul>';
+		}
+
+		/**
+		 * Filters the Walker class used when adding nav menu items.
+		 *
+		 * @since 3.0.0
+		 *
+		 * @param string $class   The walker class to use. Default 'Walker_Nav_Menu_Edit'.
+		 * @param int    $menu_id ID of the menu being rendered.
+		 */
+		$walker_class_name = apply_filters( 'wp_edit_nav_menu_walker', 'Walker_Nav_Menu_Edit', $menu_id );
+
+		if ( class_exists( $walker_class_name ) ) {
+			$walker = new $walker_class_name();
+		} else {
+			return new WP_Error(
+				'menu_walker_not_exist',
+				sprintf(
+					/* translators: %s: Walker class name. */
+					__( 'The Walker class named %s does not exist.' ),
+					'<strong>' . $walker_class_name . '</strong>'
+				)
+			);
+		}
+
+		$some_pending_menu_items = false;
+		$some_invalid_menu_items = false;
+
+		foreach ( (array) $menu_items as $menu_item ) {
+			if ( isset( $menu_item->post_status ) && 'draft' === $menu_item->post_status ) {
+				$some_pending_menu_items = true;
+			}
+			if ( ! empty( $menu_item->_invalid ) ) {
+				$some_invalid_menu_items = true;
+			}
+		}
+
+		if ( $some_pending_menu_items ) {
+			$message     = __( 'Click Save Menu to make pending menu items public.' );
+			$notice_args = array(
+				'type'               => 'info',
+				'additional_classes' => array( 'notice-alt', 'inline' ),
+			);
+			$result     .= wp_get_admin_notice( $message, $notice_args );
+		}
+
+		if ( $some_invalid_menu_items ) {
+			$message     = __( 'There are some invalid menu items. Please check or delete them.' );
+			$notice_args = array(
+				'type'               => 'error',
+				'additional_classes' => array( 'notice-alt', 'inline' ),
+			);
+			$result     .= wp_get_admin_notice( $message, $notice_args );
+		}
+
+		$result .= '<ul class="menu" id="menu-to-edit"> ';
+		$result .= walk_nav_menu_tree(
+			array_map( 'wp_setup_nav_menu_item', $menu_items ),
+			0,
+			(object) array( 'walker' => $walker )
+		);
+		$result .= ' </ul> ';
+
+		return $result;
+	} elseif ( is_wp_error( $menu ) ) {
+		return $menu;
+	}
+}
+
+/**
+ * Returns the columns for the nav menus page.
+ *
+ * @since 3.0.0
+ *
+ * @return string[] Array of column titles keyed by their column name.
+ */
+function wp_nav_menu_manage_columns() {
+	return array(
+		'_title'          => __( 'Show advanced menu properties' ),
+		'cb'              => '<input type="checkbox" />',
+		'link-target'     => __( 'Link Target' ),
+		'title-attribute' => __( 'Title Attribute' ),
+		'css-classes'     => __( 'CSS Classes' ),
+		'xfn'             => __( 'Link Relationship (XFN)' ),
+		'description'     => __( 'Description' ),
+	);
+}
+
+/**
+ * Deletes orphaned draft menu items
+ *
+ * @access private
+ * @since 3.0.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ */
+function _wp_delete_orphaned_draft_menu_items() {
+	global $wpdb;
+
+	$delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS );
+
+	// Delete orphaned draft menu items.
+	$menu_items_to_delete = $wpdb->get_col(
+		$wpdb->prepare(
+			"SELECT ID FROM $wpdb->posts AS p
+			LEFT JOIN $wpdb->postmeta AS m ON p.ID = m.post_id
+			WHERE post_type = 'nav_menu_item' AND post_status = 'draft'
+			AND meta_key = '_menu_item_orphaned' AND meta_value < %d",
+			$delete_timestamp
+		)
+	);
+
+	foreach ( (array) $menu_items_to_delete as $menu_item_id ) {
+		wp_delete_post( $menu_item_id, true );
+	}
+}
+
+/**
+ * Saves nav menu items.
+ *
+ * @since 3.6.0
+ *
+ * @param int|string $nav_menu_selected_id    ID, slug, or name of the currently-selected menu.
+ * @param string     $nav_menu_selected_title Title of the currently-selected menu.
+ * @return string[] The menu updated messages.
+ */
+function wp_nav_menu_update_menu_items( $nav_menu_selected_id, $nav_menu_selected_title ) {
+	$unsorted_menu_items = wp_get_nav_menu_items(
+		$nav_menu_selected_id,
+		array(
+			'orderby'     => 'ID',
+			'output'      => ARRAY_A,
+			'output_key'  => 'ID',
+			'post_status' => 'draft,publish',
+		)
+	);
+
+	$messages   = array();
+	$menu_items = array();
+
+	// Index menu items by DB ID.
+	foreach ( $unsorted_menu_items as $_item ) {
+		$menu_items[ $_item->db_id ] = $_item;
+	}
+
+	$post_fields = array(
+		'menu-item-db-id',
+		'menu-item-object-id',
+		'menu-item-object',
+		'menu-item-parent-id',
+		'menu-item-position',
+		'menu-item-type',
+		'menu-item-title',
+		'menu-item-url',
+		'menu-item-description',
+		'menu-item-attr-title',
+		'menu-item-target',
+		'menu-item-classes',
+		'menu-item-xfn',
+	);
+
+	wp_defer_term_counting( true );
+
+	// Loop through all the menu items' POST variables.
+	if ( ! empty( $_POST['menu-item-db-id'] ) ) {
+		foreach ( (array) $_POST['menu-item-db-id'] as $_key => $k ) {
+
+			// Menu item title can't be blank.
+			if ( ! isset( $_POST['menu-item-title'][ $_key ] ) || '' === $_POST['menu-item-title'][ $_key ] ) {
+				continue;
+			}
+
+			$args = array();
+			foreach ( $post_fields as $field ) {
+				$args[ $field ] = isset( $_POST[ $field ][ $_key ] ) ? $_POST[ $field ][ $_key ] : '';
+			}
+
+			$menu_item_db_id = wp_update_nav_menu_item(
+				$nav_menu_selected_id,
+				( (int) $_POST['menu-item-db-id'][ $_key ] !== $_key ? 0 : $_key ),
+				$args
+			);
+
+			if ( is_wp_error( $menu_item_db_id ) ) {
+				$messages[] = wp_get_admin_notice(
+					$menu_item_db_id->get_error_message(),
+					array(
+						'id'                 => 'message',
+						'additional_classes' => array( 'error' ),
+					)
+				);
+			} else {
+				unset( $menu_items[ $menu_item_db_id ] );
+			}
+		}
+	}
+
+	// Remove menu items from the menu that weren't in $_POST.
+	if ( ! empty( $menu_items ) ) {
+		foreach ( array_keys( $menu_items ) as $menu_item_id ) {
+			if ( is_nav_menu_item( $menu_item_id ) ) {
+				wp_delete_post( $menu_item_id );
+			}
+		}
+	}
+
+	// Store 'auto-add' pages.
+	$auto_add        = ! empty( $_POST['auto-add-pages'] );
+	$nav_menu_option = (array) get_option( 'nav_menu_options' );
+
+	if ( ! isset( $nav_menu_option['auto_add'] ) ) {
+		$nav_menu_option['auto_add'] = array();
+	}
+
+	if ( $auto_add ) {
+		if ( ! in_array( $nav_menu_selected_id, $nav_menu_option['auto_add'], true ) ) {
+			$nav_menu_option['auto_add'][] = $nav_menu_selected_id;
+		}
+	} else {
+		$key = array_search( $nav_menu_selected_id, $nav_menu_option['auto_add'], true );
+		if ( false !== $key ) {
+			unset( $nav_menu_option['auto_add'][ $key ] );
+		}
+	}
+
+	// Remove non-existent/deleted menus.
+	$nav_menu_option['auto_add'] = array_intersect(
+		$nav_menu_option['auto_add'],
+		wp_get_nav_menus( array( 'fields' => 'ids' ) )
+	);
+
+	update_option( 'nav_menu_options', $nav_menu_option );
+
+	wp_defer_term_counting( false );
+
+	/** This action is documented in wp-includes/nav-menu.php */
+	do_action( 'wp_update_nav_menu', $nav_menu_selected_id );
+
+	/* translators: %s: Nav menu title. */
+	$message     = sprintf( __( '%s has been updated.' ), '<strong>' . $nav_menu_selected_title . '</strong>' );
+	$notice_args = array(
+		'id'                 => 'message',
+		'dismissible'        => true,
+		'additional_classes' => array( 'updated' ),
+	);
+
+	$messages[] = wp_get_admin_notice( $message, $notice_args );
+
+	unset( $menu_items, $unsorted_menu_items );
+
+	return $messages;
+}
+
+/**
+ * If a JSON blob of navigation menu data is in POST data, expand it and inject
+ * it into `$_POST` to avoid PHP `max_input_vars` limitations. See #14134.
+ *
+ * @ignore
+ * @since 4.5.3
+ * @access private
+ */
+function _wp_expand_nav_menu_post_data() {
+	if ( ! isset( $_POST['nav-menu-data'] ) ) {
+		return;
+	}
+
+	$data = json_decode( stripslashes( $_POST['nav-menu-data'] ) );
+
+	if ( ! is_null( $data ) && $data ) {
+		foreach ( $data as $post_input_data ) {
+			/*
+			 * For input names that are arrays (e.g. `menu-item-db-id[3][4][5]`),
+			 * derive the array path keys via regex and set the value in $_POST.
+			 */
+			preg_match( '#([^\[]*)(\[(.+)\])?#', $post_input_data->name, $matches );
+
+			$array_bits = array( $matches[1] );
+
+			if ( isset( $matches[3] ) ) {
+				$array_bits = array_merge( $array_bits, explode( '][', $matches[3] ) );
+			}
+
+			$new_post_data = array();
+
+			// Build the new array value from leaf to trunk.
+			for ( $i = count( $array_bits ) - 1; $i >= 0; $i-- ) {
+				if ( count( $array_bits ) - 1 === $i ) {
+					$new_post_data[ $array_bits[ $i ] ] = wp_slash( $post_input_data->value );
+				} else {
+					$new_post_data = array( $array_bits[ $i ] => $new_post_data );
+				}
+			}
+
+			$_POST = array_replace_recursive( $_POST, $new_post_data );
+		}
+	}
+}