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Edit File : nav-menus.php \| Size : 48.19 KB
<?php /** * WordPress Administration for Navigation Menus * Interface functions * * @version 2.0.0 * * @package WordPress * @subpackage Administration / /* Load WordPress Administration Bootstrap / require_once __DIR__ . '/admin.php'; // Load all the nav menu interface functions. require_once ABSPATH . 'wp-admin/includes/nav-menu.php'; if ( ! current_theme_supports( 'menus' ) && ! current_theme_supports( 'widgets' ) ) { wp_die( __( 'Your theme does not support navigation menus or widgets.' ) ); } // Permissions check. if ( ! current_user_can( 'edit_theme_options' ) ) { wp_die( '<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' . '<p>' . __( 'Sorry, you are not allowed to edit theme options on this site.' ) . '</p>', 403 ); } // Used in the HTML title tag. $title = __( 'Menus' ); wp_enqueue_script( 'nav-menu' ); if ( wp_is_mobile() ) { wp_enqueue_script( 'jquery-touch-punch' ); } // Container for any messages displayed to the user. $messages = array(); // Container that stores the name of the active menu. $nav_menu_selected_title = ''; // The menu id of the current menu being edited. $nav_menu_selected_id = isset( $_REQUEST['menu'] ) ? (int) $_REQUEST['menu'] : 0; // Get existing menu locations assignments. $locations = get_registered_nav_menus(); $menu_locations = get_nav_menu_locations(); $num_locations = count( array_keys( $locations ) ); // Allowed actions: add, update, delete. $action = isset( $_REQUEST['action'] ) ? $_REQUEST['action'] : 'edit'; / * If a JSON blob of navigation menu data is found, expand it and inject it * into `$_POST` to avoid PHP `max_input_vars` limitations. See #14134. / _wp_expand_nav_menu_post_data(); switch ( $action ) { case 'add-menu-item': check_admin_referer( 'add-menu_item', 'menu-settings-column-nonce' ); if ( isset( $_REQUEST['nav-menu-locations'] ) ) { set_theme_mod( 'nav_menu_locations', array_map( 'absint', $_REQUEST['menu-locations'] ) ); } elseif ( isset( $_REQUEST['menu-item'] ) ) { wp_save_nav_menu_items( $nav_menu_selected_id, $_REQUEST['menu-item'] ); } break; case 'move-down-menu-item': // Moving down a menu item is the same as moving up the next in order. check_admin_referer( 'move-menu_item' ); $menu_item_id = isset( $_REQUEST['menu-item'] ) ? (int) $_REQUEST['menu-item'] : 0; if ( is_nav_menu_item( $menu_item_id ) ) { $menus = isset( $_REQUEST['menu'] ) ? array( (int) $_REQUEST['menu'] ) : wp_get_object_terms( $menu_item_id, 'nav_menu', array( 'fields' => 'ids' ) ); if ( ! is_wp_error( $menus ) && ! empty( $menus[0] ) ) { $menu_id = (int) $menus[0]; $ordered_menu_items = wp_get_nav_menu_items( $menu_id ); $menu_item_data = (array) wp_setup_nav_menu_item( get_post( $menu_item_id ) ); // Set up the data we need in one pass through the array of menu items. $dbids_to_orders = array(); $orders_to_dbids = array(); foreach ( (array) $ordered_menu_items as $ordered_menu_item_object ) { if ( isset( $ordered_menu_item_object->ID ) ) { if ( isset( $ordered_menu_item_object->menu_order ) ) { $dbids_to_orders[ $ordered_menu_item_object->ID ] = $ordered_menu_item_object->menu_order; $orders_to_dbids[ $ordered_menu_item_object->menu_order ] = $ordered_menu_item_object->ID; } } } // Get next in order. if ( isset( $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] + 1 ] ) ) { $next_item_id = $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] + 1 ]; $next_item_data = (array) wp_setup_nav_menu_item( get_post( $next_item_id ) ); // If not siblings of same parent, bubble menu item up but keep order. if ( ! empty( $menu_item_data['menu_item_parent'] ) && ( empty( $next_item_data['menu_item_parent'] ) \|\| (int) $next_item_data['menu_item_parent'] !== (int) $menu_item_data['menu_item_parent'] ) ) { if ( in_array( (int) $menu_item_data['menu_item_parent'], $orders_to_dbids, true ) ) { $parent_db_id = (int) $menu_item_data['menu_item_parent']; } else { $parent_db_id = 0; } $parent_object = wp_setup_nav_menu_item( get_post( $parent_db_id ) ); if ( ! is_wp_error( $parent_object ) ) { $parent_data = (array) $parent_object; $menu_item_data['menu_item_parent'] = $parent_data['menu_item_parent']; // Reset invalid `menu_item_parent`. $menu_item_data = _wp_reset_invalid_menu_item_parent( $menu_item_data ); update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] ); } // Make menu item a child of its next sibling. } else { $next_item_data['menu_order'] = $next_item_data['menu_order'] - 1; $menu_item_data['menu_order'] = $menu_item_data['menu_order'] + 1; $menu_item_data['menu_item_parent'] = $next_item_data['ID']; // Reset invalid `menu_item_parent`. $menu_item_data = _wp_reset_invalid_menu_item_parent( $menu_item_data ); update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] ); wp_update_post( $menu_item_data ); wp_update_post( $next_item_data ); } // The item is last but still has a parent, so bubble up. } elseif ( ! empty( $menu_item_data['menu_item_parent'] ) && in_array( (int) $menu_item_data['menu_item_parent'], $orders_to_dbids, true ) ) { $menu_item_data['menu_item_parent'] = (int) get_post_meta( $menu_item_data['menu_item_parent'], '_menu_item_menu_item_parent', true ); // Reset invalid `menu_item_parent`. $menu_item_data = _wp_reset_invalid_menu_item_parent( $menu_item_data ); update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] ); } } } break; case 'move-up-menu-item': check_admin_referer( 'move-menu_item' ); $menu_item_id = isset( $_REQUEST['menu-item'] ) ? (int) $_REQUEST['menu-item'] : 0; if ( is_nav_menu_item( $menu_item_id ) ) { if ( isset( $_REQUEST['menu'] ) ) { $menus = array( (int) $_REQUEST['menu'] ); } else { $menus = wp_get_object_terms( $menu_item_id, 'nav_menu', array( 'fields' => 'ids' ) ); } if ( ! is_wp_error( $menus ) && ! empty( $menus[0] ) ) { $menu_id = (int) $menus[0]; $ordered_menu_items = wp_get_nav_menu_items( $menu_id ); $menu_item_data = (array) wp_setup_nav_menu_item( get_post( $menu_item_id ) ); // Set up the data we need in one pass through the array of menu items. $dbids_to_orders = array(); $orders_to_dbids = array(); foreach ( (array) $ordered_menu_items as $ordered_menu_item_object ) { if ( isset( $ordered_menu_item_object->ID ) ) { if ( isset( $ordered_menu_item_object->menu_order ) ) { $dbids_to_orders[ $ordered_menu_item_object->ID ] = $ordered_menu_item_object->menu_order; $orders_to_dbids[ $ordered_menu_item_object->menu_order ] = $ordered_menu_item_object->ID; } } } // If this menu item is not first. if ( ! empty( $dbids_to_orders[ $menu_item_id ] ) && ! empty( $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ] ) ) { // If this menu item is a child of the previous. if ( ! empty( $menu_item_data['menu_item_parent'] ) && in_array( (int) $menu_item_data['menu_item_parent'], array_keys( $dbids_to_orders ), true ) && isset( $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ] ) && ( (int) $menu_item_data['menu_item_parent'] === $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ] ) ) { if ( in_array( (int) $menu_item_data['menu_item_parent'], $orders_to_dbids, true ) ) { $parent_db_id = (int) $menu_item_data['menu_item_parent']; } else { $parent_db_id = 0; } $parent_object = wp_setup_nav_menu_item( get_post( $parent_db_id ) ); if ( ! is_wp_error( $parent_object ) ) { $parent_data = (array) $parent_object; / * If there is something before the parent and parent a child of it, * make menu item a child also of it. / if ( ! empty( $dbids_to_orders[ $parent_db_id ] ) && ! empty( $orders_to_dbids[ $dbids_to_orders[ $parent_db_id ] - 1 ] ) && ! empty( $parent_data['menu_item_parent'] ) ) { $menu_item_data['menu_item_parent'] = $parent_data['menu_item_parent']; / * Else if there is something before parent and parent not a child of it, * make menu item a child of that something's parent / } elseif ( ! empty( $dbids_to_orders[ $parent_db_id ] ) && ! empty( $orders_to_dbids[ $dbids_to_orders[ $parent_db_id ] - 1 ] ) ) { $_possible_parent_id = (int) get_post_meta( $orders_to_dbids[ $dbids_to_orders[ $parent_db_id ] - 1 ], '_menu_item_menu_item_parent', true ); if ( in_array( $_possible_parent_id, array_keys( $dbids_to_orders ), true ) ) { $menu_item_data['menu_item_parent'] = $_possible_parent_id; } else { $menu_item_data['menu_item_parent'] = 0; } // Else there isn't something before the parent. } else { $menu_item_data['menu_item_parent'] = 0; } // Set former parent's [menu_order] to that of menu-item's. $parent_data['menu_order'] = $parent_data['menu_order'] + 1; // Set menu-item's [menu_order] to that of former parent. $menu_item_data['menu_order'] = $menu_item_data['menu_order'] - 1; // Save changes. update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] ); wp_update_post( $menu_item_data ); wp_update_post( $parent_data ); } // Else this menu item is not a child of the previous. } elseif ( empty( $menu_item_data['menu_order'] ) \|\| empty( $menu_item_data['menu_item_parent'] ) \|\| ! in_array( (int) $menu_item_data['menu_item_parent'], array_keys( $dbids_to_orders ), true ) \|\| empty( $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ] ) \|\| $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ] !== (int) $menu_item_data['menu_item_parent'] ) { // Just make it a child of the previous; keep the order. $menu_item_data['menu_item_parent'] = (int) $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ]; // Reset invalid `menu_item_parent`. $menu_item_data = _wp_reset_invalid_menu_item_parent( $menu_item_data ); update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] ); wp_update_post( $menu_item_data ); } } } } break; case 'delete-menu-item': $menu_item_id = (int) $_REQUEST['menu-item']; check_admin_referer( 'delete-menu_item_' . $menu_item_id ); if ( is_nav_menu_item( $menu_item_id ) && wp_delete_post( $menu_item_id, true ) ) { $messages[] = wp_get_admin_notice( __( 'The menu item has been successfully deleted.' ), array( 'id' => 'message', 'additional_classes' => array( 'updated' ), 'dismissible' => true, ) ); } break; case 'delete': check_admin_referer( 'delete-nav_menu-' . $nav_menu_selected_id ); if ( is_nav_menu( $nav_menu_selected_id ) ) { $deletion = wp_delete_nav_menu( $nav_menu_selected_id ); } else { // Reset the selected menu. $nav_menu_selected_id = 0; unset( $_REQUEST['menu'] ); } if ( ! isset( $deletion ) ) { break; } if ( is_wp_error( $deletion ) ) { $messages[] = wp_get_admin_notice( $deletion->get_error_message(), array( 'id' => 'message', 'additional_classes' => array( 'error' ), 'dismissible' => true, ) ); } else { $messages[] = wp_get_admin_notice( __( 'The menu has been successfully deleted.' ), array( 'id' => 'message', 'additional_classes' => array( 'updated' ), 'dismissible' => true, ) ); } break; case 'delete_menus': check_admin_referer( 'nav_menus_bulk_actions' ); foreach ( $_REQUEST['delete_menus'] as $menu_id_to_delete ) { if ( ! is_nav_menu( $menu_id_to_delete ) ) { continue; } $deletion = wp_delete_nav_menu( $menu_id_to_delete ); if ( is_wp_error( $deletion ) ) { $messages[] = wp_get_admin_notice( $deletion->get_error_message(), array( 'id' => 'message', 'additional_classes' => array( 'error' ), 'dismissible' => true, ) ); $deletion_error = true; } } if ( empty( $deletion_error ) ) { $messages[] = wp_get_admin_notice( __( 'Selected menus have been successfully deleted.' ), array( 'id' => 'message', 'additional_classes' => array( 'updated' ), 'dismissible' => true, ) ); } break; case 'update': check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' ); // Merge new and existing menu locations if any new ones are set. $new_menu_locations = array(); if ( isset( $_POST['menu-locations'] ) ) { $new_menu_locations = array_map( 'absint', $_POST['menu-locations'] ); $menu_locations = array_merge( $menu_locations, $new_menu_locations ); } // Add Menu. if ( 0 === $nav_menu_selected_id ) { $new_menu_title = trim( esc_html( $_POST['menu-name'] ) ); if ( $new_menu_title ) { $_nav_menu_selected_id = wp_update_nav_menu_object( 0, array( 'menu-name' => $new_menu_title ) ); if ( is_wp_error( $_nav_menu_selected_id ) ) { $messages[] = wp_get_admin_notice( $_nav_menu_selected_id->get_error_message(), array( 'id' => 'message', 'additional_classes' => array( 'error' ), 'dismissible' => true, ) ); } else { $_menu_object = wp_get_nav_menu_object( $_nav_menu_selected_id ); $nav_menu_selected_id = $_nav_menu_selected_id; $nav_menu_selected_title = $_menu_object->name; if ( isset( $_REQUEST['menu-item'] ) ) { wp_save_nav_menu_items( $nav_menu_selected_id, absint( $_REQUEST['menu-item'] ) ); } if ( isset( $_REQUEST['zero-menu-state'] ) \|\| ! empty( $_POST['auto-add-pages'] ) ) { // If there are menu items, add them. wp_nav_menu_update_menu_items( $nav_menu_selected_id, $nav_menu_selected_title ); } if ( isset( $_REQUEST['zero-menu-state'] ) ) { // Auto-save nav_menu_locations. $locations = get_nav_menu_locations(); foreach ( $locations as $location => $menu_id ) { $locations[ $location ] = $nav_menu_selected_id; break; // There should only be 1. } set_theme_mod( 'nav_menu_locations', $locations ); } elseif ( count( $new_menu_locations ) > 0 ) { // If locations have been selected for the new menu, save those. $locations = get_nav_menu_locations(); foreach ( array_keys( $new_menu_locations ) as $location ) { $locations[ $location ] = $nav_menu_selected_id; } set_theme_mod( 'nav_menu_locations', $locations ); } if ( isset( $_REQUEST['use-location'] ) ) { $locations = get_registered_nav_menus(); $menu_locations = get_nav_menu_locations(); if ( isset( $locations[ $_REQUEST['use-location'] ] ) ) { $menu_locations[ $_REQUEST['use-location'] ] = $nav_menu_selected_id; } set_theme_mod( 'nav_menu_locations', $menu_locations ); } wp_redirect( admin_url( 'nav-menus.php?menu=' . $_nav_menu_selected_id ) ); exit; } } else { $messages[] = wp_get_admin_notice( __( 'Please enter a valid menu name.' ), array( 'id' => 'message', 'additional_classes' => array( 'error' ), 'dismissible' => true, ) ); } // Update existing menu. } else { // Remove menu locations that have been unchecked. foreach ( $locations as $location => $description ) { if ( ( empty( $_POST['menu-locations'] ) \|\| empty( $_POST['menu-locations'][ $location ] ) ) && isset( $menu_locations[ $location ] ) && $menu_locations[ $location ] === $nav_menu_selected_id ) { unset( $menu_locations[ $location ] ); } } // Set menu locations. set_theme_mod( 'nav_menu_locations', $menu_locations ); $_menu_object = wp_get_nav_menu_object( $nav_menu_selected_id ); $menu_title = trim( esc_html( $_POST['menu-name'] ) ); if ( ! $menu_title ) { $messages[] = wp_get_admin_notice( __( 'Please enter a valid menu name.' ), array( 'id' => 'message', 'additional_classes' => array( 'error' ), 'dismissible' => true, ) ); $menu_title = $_menu_object->name; } if ( ! is_wp_error( $_menu_object ) ) { $_nav_menu_selected_id = wp_update_nav_menu_object( $nav_menu_selected_id, array( 'menu-name' => $menu_title ) ); if ( is_wp_error( $_nav_menu_selected_id ) ) { $_menu_object = $_nav_menu_selected_id; $messages[] = wp_get_admin_notice( $_nav_menu_selected_id->get_error_message(), array( 'id' => 'message', 'additional_classes' => array( 'error' ), 'dismissible' => true, ) ); } else { $_menu_object = wp_get_nav_menu_object( $_nav_menu_selected_id ); $nav_menu_selected_title = $_menu_object->name; } } // Update menu items. if ( ! is_wp_error( $_menu_object ) ) { $messages = array_merge( $messages, wp_nav_menu_update_menu_items( $_nav_menu_selected_id, $nav_menu_selected_title ) ); // If the menu ID changed, redirect to the new URL. if ( $nav_menu_selected_id !== $_nav_menu_selected_id ) { wp_redirect( admin_url( 'nav-menus.php?menu=' . (int) $_nav_menu_selected_id ) ); exit; } } } break; case 'locations': if ( ! $num_locations ) { wp_redirect( admin_url( 'nav-menus.php' ) ); exit; } add_filter( 'screen_options_show_screen', '__return_false' ); if ( isset( $_POST['menu-locations'] ) ) { check_admin_referer( 'save-menu-locations' ); $new_menu_locations = array_map( 'absint', $_POST['menu-locations'] ); $menu_locations = array_merge( $menu_locations, $new_menu_locations ); // Set menu locations. set_theme_mod( 'nav_menu_locations', $menu_locations ); $messages[] = wp_get_admin_notice( __( 'Menu locations updated.' ), array( 'id' => 'message', 'additional_classes' => array( 'updated' ), 'dismissible' => true, ) ); } break; } // Get all nav menus. $nav_menus = wp_get_nav_menus(); $menu_count = count( $nav_menus ); // Are we on the add new screen? $add_new_screen = ( isset( $_GET['menu'] ) && 0 === (int) $_GET['menu'] ) ? true : false; $locations_screen = ( isset( $_GET['action'] ) && 'locations' === $_GET['action'] ) ? true : false; $page_count = wp_count_posts( 'page' ); / * If we have one theme location, and zero menus, we take them right * into editing their first menu. / if ( 1 === count( get_registered_nav_menus() ) && ! $add_new_screen && empty( $nav_menus ) && ! empty( $page_count->publish ) ) { $one_theme_location_no_menus = true; } else { $one_theme_location_no_menus = false; } $nav_menus_l10n = array( 'oneThemeLocationNoMenus' => $one_theme_location_no_menus, 'moveUp' => __( 'Move up one' ), 'moveDown' => __( 'Move down one' ), 'moveToTop' => __( 'Move to the top' ), / translators: %s: Previous item name. / 'moveUnder' => __( 'Move under %s' ), / translators: %s: Previous item name. / 'moveOutFrom' => __( 'Move out from under %s' ), / translators: %s: Previous item name. / 'under' => __( 'Under %s' ), / translators: %s: Previous item name. / 'outFrom' => __( 'Out from under %s' ), / translators: 1: Item name, 2: Item type, 3: Item index, 4: Total items. / 'menuFocus' => __( 'Edit %1$s (%2$s, %3$d of %4$d)' ), / translators: 1: Item name, 2: Item type, 3: Item index, 4: Total items, 5: Item parent. / 'subMenuFocus' => __( 'Edit %1$s (%2$s, sub-item %3$d of %4$d under %5$s)' ), / translators: 1: Item name, 2: Item type, 3: Item index, 4: Total items, 5: Item parent, 6: Item depth. / 'subMenuMoreDepthFocus' => __( 'Edit %1$s (%2$s, sub-item %3$d of %4$d under %5$s, level %6$d)' ), / translators: %s: Item name. / 'menuItemDeletion' => __( 'item %s' ), / translators: %s: Item name. / 'itemsDeleted' => __( 'Deleted menu item: %s.' ), 'itemAdded' => __( 'Menu item added' ), 'itemRemoved' => __( 'Menu item removed' ), 'movedUp' => __( 'Menu item moved up' ), 'movedDown' => __( 'Menu item moved down' ), 'movedTop' => __( 'Menu item moved to the top' ), 'movedLeft' => __( 'Menu item moved out of submenu' ), 'movedRight' => __( 'Menu item is now a sub-item' ), 'parentUpdated' => __( 'Menu parent updated' ), 'orderUpdated' => __( 'Menu order updated' ), ); wp_localize_script( 'nav-menu', 'menus', $nav_menus_l10n ); / * Redirect to add screen if there are no menus and this users has either zero, * or more than 1 theme locations. / if ( 0 === $menu_count && ! $add_new_screen && ! $one_theme_location_no_menus ) { wp_redirect( admin_url( 'nav-menus.php?action=edit&menu=0' ) ); } // Get recently edited nav menu. $recently_edited = absint( get_user_option( 'nav_menu_recently_edited' ) ); if ( empty( $recently_edited ) && is_nav_menu( $nav_menu_selected_id ) ) { $recently_edited = $nav_menu_selected_id; } // Use $recently_edited if none are selected. if ( empty( $nav_menu_selected_id ) && ! isset( $_GET['menu'] ) && is_nav_menu( $recently_edited ) ) { $nav_menu_selected_id = $recently_edited; } // On deletion of menu, if another menu exists, show it. if ( ! $add_new_screen && $menu_count > 0 && isset( $_GET['action'] ) && 'delete' === $_GET['action'] ) { $nav_menu_selected_id = $nav_menus[0]->term_id; } // Set $nav_menu_selected_id to 0 if no menus. if ( $one_theme_location_no_menus ) { $nav_menu_selected_id = 0; } elseif ( empty( $nav_menu_selected_id ) && ! empty( $nav_menus ) && ! $add_new_screen ) { // If we have no selection yet, and we have menus, set to the first one in the list. $nav_menu_selected_id = $nav_menus[0]->term_id; } // Update the user's setting. if ( $nav_menu_selected_id !== $recently_edited && is_nav_menu( $nav_menu_selected_id ) ) { update_user_meta( $current_user->ID, 'nav_menu_recently_edited', $nav_menu_selected_id ); } // If there's a menu, get its name. if ( ! $nav_menu_selected_title && is_nav_menu( $nav_menu_selected_id ) ) { $_menu_object = wp_get_nav_menu_object( $nav_menu_selected_id ); $nav_menu_selected_title = ! is_wp_error( $_menu_object ) ? $_menu_object->name : ''; } // Generate truncated menu names. foreach ( (array) $nav_menus as $key => $_nav_menu ) { $nav_menus[ $key ]->truncated_name = wp_html_excerpt( $_nav_menu->name, 40, '…' ); } // Retrieve menu locations. if ( current_theme_supports( 'menus' ) ) { $locations = get_registered_nav_menus(); $menu_locations = get_nav_menu_locations(); } / * Ensure the user will be able to scroll horizontally * by adding a class for the max menu depth. * * @global int $_wp_nav_menu_max_depth / global $_wp_nav_menu_max_depth; $_wp_nav_menu_max_depth = 0; // Calling wp_get_nav_menu_to_edit generates $_wp_nav_menu_max_depth. if ( is_nav_menu( $nav_menu_selected_id ) ) { $menu_items = wp_get_nav_menu_items( $nav_menu_selected_id, array( 'post_status' => 'any' ) ); $edit_markup = wp_get_nav_menu_to_edit( $nav_menu_selected_id ); } /* * @since 3.0.0 * * @global int $_wp_nav_menu_max_depth * * @param string $classes * @return string / function wp_nav_menu_max_depth( $classes ) { global $_wp_nav_menu_max_depth; return "$classes menu-max-depth-$_wp_nav_menu_max_depth"; } add_filter( 'admin_body_class', 'wp_nav_menu_max_depth' ); wp_nav_menu_setup(); wp_initial_nav_menu_meta_boxes(); if ( ! current_theme_supports( 'menus' ) && ! $num_locations ) { $message_no_theme_support = sprintf( / translators: %s: URL to Widgets screen. / __( 'Your theme does not natively support menus, but you can use them in sidebars by adding a “Navigation Menu” widget on the <a href="%s">Widgets</a> screen.' ), admin_url( 'widgets.php' ) ); $messages[] = wp_get_admin_notice( $message_no_theme_support, array( 'id' => 'message', 'additional_classes' => array( 'updated' ), 'dismissible' => true, ) ); } if ( ! $locations_screen ) : // Main tab. $overview = '<p>' . __( 'This screen is used for managing your navigation menus.' ) . '</p>'; $overview .= '<p>' . sprintf( / translators: 1: URL to Widgets screen, 2 and 3: The names of the default themes. / __( 'Menus can be displayed in locations defined by your theme, even used in sidebars by adding a “Navigation Menu” widget on the <a href="%1$s">Widgets</a> screen. If your theme does not support the navigation menus feature (the default themes, %2$s and %3$s, do), you can learn about adding this support by following the documentation link to the side.' ), admin_url( 'widgets.php' ), 'Twenty Twenty', 'Twenty Twenty-One' ) . '</p>'; $overview .= '<p>' . __( 'From this screen you can:' ) . '</p>'; $overview .= '<ul><li>' . __( 'Create, edit, and delete menus' ) . '</li>'; $overview .= '<li>' . __( 'Add, organize, and modify individual menu items' ) . '</li></ul>'; get_current_screen()->add_help_tab( array( 'id' => 'overview', 'title' => __( 'Overview' ), 'content' => $overview, ) ); $menu_management = '<p>' . __( 'The menu management box at the top of the screen is used to control which menu is opened in the editor below.' ) . '</p>'; $menu_management .= '<ul><li>' . __( 'To edit an existing menu, <strong>choose a menu from the dropdown and click Select</strong>' ) . '</li>'; $menu_management .= '<li>' . __( 'If you have not yet created any menus, <strong>click the ’create a new menu’ link</strong> to get started' ) . '</li></ul>'; $menu_management .= '<p>' . __( 'You can assign theme locations to individual menus by <strong>selecting the desired settings</strong> at the bottom of the menu editor. To assign menus to all theme locations at once, <strong>visit the Manage Locations tab</strong> at the top of the screen.' ) . '</p>'; get_current_screen()->add_help_tab( array( 'id' => 'menu-management', 'title' => __( 'Menu Management' ), 'content' => $menu_management, ) ); $editing_menus = '<p>' . __( 'Each navigation menu may contain a mix of links to pages, categories, custom URLs or other content types. Menu links are added by selecting items from the expanding boxes in the left-hand column below.' ) . '</p>'; $editing_menus .= '<p>' . __( '<strong>Clicking the arrow to the right of any menu item</strong> in the editor will reveal a standard group of settings. Additional settings such as link target, CSS classes, link relationships, and link descriptions can be enabled and disabled via the Screen Options tab.' ) . '</p>'; $editing_menus .= '<ul><li>' . __( 'Add one or several items at once by <strong>selecting the checkbox next to each item and clicking Add to Menu</strong>' ) . '</li>'; $editing_menus .= '<li>' . __( 'To add a custom link, <strong>expand the Custom Links section, enter a URL and link text, and click Add to Menu</strong>' ) . '</li>'; $editing_menus .= '<li>' . __( 'To reorganize menu items, <strong>drag and drop items with your mouse or use your keyboard</strong>. Drag or move a menu item a little to the right to make it a submenu' ) . '</li>'; $editing_menus .= '<li>' . __( 'Delete a menu item by <strong>expanding it and clicking the Remove link</strong>' ) . '</li></ul>'; get_current_screen()->add_help_tab( array( 'id' => 'editing-menus', 'title' => __( 'Editing Menus' ), 'content' => $editing_menus, ) ); else : // Locations tab. $locations_overview = '<p>' . __( 'This screen is used for globally assigning menus to locations defined by your theme.' ) . '</p>'; $locations_overview .= '<ul><li>' . __( 'To assign menus to one or more theme locations, <strong>select a menu from each location’s dropdown</strong>. When you are finished, <strong>click Save Changes</strong>' ) . '</li>'; $locations_overview .= '<li>' . __( 'To edit a menu currently assigned to a theme location, <strong>click the adjacent ’Edit’ link</strong>' ) . '</li>'; $locations_overview .= '<li>' . __( 'To add a new menu instead of assigning an existing one, <strong>click the ’Use new menu’ link</strong>. Your new menu will be automatically assigned to that theme location' ) . '</li></ul>'; get_current_screen()->add_help_tab( array( 'id' => 'locations-overview', 'title' => __( 'Overview' ), 'content' => $locations_overview, ) ); endif; get_current_screen()->set_help_sidebar( '<p><strong>' . __( 'For more information:' ) . '</strong></p>' . '<p>' . __( '<a href="https://wordpress.org/documentation/article/appearance-menus-screen/">Documentation on Menus</a>' ) . '</p>' . '<p>' . __( '<a href="https://wordpress.org/support/forums/">Support forums</a>' ) . '</p>' ); // Get the admin header. require_once ABSPATH . 'wp-admin/admin-header.php'; ?> <div class="wrap"> <h1 class="wp-heading-inline"><?php esc_html_e( 'Menus' ); ?></h1> <?php if ( current_user_can( 'customize' ) ) : $focus = $locations_screen ? array( 'section' => 'menu_locations' ) : array( 'panel' => 'nav_menus' ); printf( ' <a class="page-title-action hide-if-no-customize" href="%1$s">%2$s</a>', esc_url( add_query_arg( array( array( 'autofocus' => $focus ), 'return' => urlencode( remove_query_arg( wp_removable_query_args(), wp_unslash( $_SERVER['REQUEST_URI'] ) ) ), ), admin_url( 'customize.php' ) ) ), __( 'Manage with Live Preview' ) ); endif; $nav_tab_active_class = ''; $nav_aria_current = ''; if ( ! isset( $_GET['action'] ) \|\| isset( $_GET['action'] ) && 'locations' !== $_GET['action'] ) { $nav_tab_active_class = ' nav-tab-active'; $nav_aria_current = ' aria-current="page"'; } ?> <hr class="wp-header-end"> <nav class="nav-tab-wrapper wp-clearfix" aria-label="<?php esc_attr_e( 'Secondary menu' ); ?>"> <a href="<?php echo esc_url( admin_url( 'nav-menus.php' ) ); ?>" class="nav-tab<?php echo $nav_tab_active_class; ?>"<?php echo $nav_aria_current; ?>><?php esc_html_e( 'Edit Menus' ); ?></a> <?php if ( $num_locations && $menu_count ) { $active_tab_class = ''; $aria_current = ''; if ( $locations_screen ) { $active_tab_class = ' nav-tab-active'; $aria_current = ' aria-current="page"'; } ?> <a href="<?php echo esc_url( add_query_arg( array( 'action' => 'locations' ), admin_url( 'nav-menus.php' ) ) ); ?>" class="nav-tab<?php echo $active_tab_class; ?>"<?php echo $aria_current; ?>><?php esc_html_e( 'Manage Locations' ); ?></a> <?php } ?> </nav> <?php foreach ( $messages as $message ) : echo $message . "\n"; endforeach; ?> <?php if ( $locations_screen ) : if ( 1 === $num_locations ) { echo '<p>' . __( 'Your theme supports one menu. Select which menu you would like to use.' ) . '</p>'; } else { echo '<p>' . sprintf( / translators: %s: Number of menus. / _n( 'Your theme supports %s menu. Select which menu appears in each location.', 'Your theme supports %s menus. Select which menu appears in each location.', $num_locations ), number_format_i18n( $num_locations ) ) . '</p>'; } ?> <div id="menu-locations-wrap"> <form method="post" action="<?php echo esc_url( add_query_arg( array( 'action' => 'locations' ), admin_url( 'nav-menus.php' ) ) ); ?>"> <table class="widefat fixed" id="menu-locations-table"> <thead> <tr> <th scope="col" class="manage-column column-locations"><?php _e( 'Theme Location' ); ?></th> <th scope="col" class="manage-column column-menus"><?php _e( 'Assigned Menu' ); ?></th> </tr> </thead> <tbody class="menu-locations"> <?php foreach ( $locations as $_location => $_name ) { ?> <tr class="menu-locations-row"> <td class="menu-location-title"><label for="locations-<?php echo $_location; ?>"><?php echo $_name; ?></label></td> <td class="menu-location-menus"> <select name="menu-locations[<?php echo $_location; ?>]" id="locations-<?php echo $_location; ?>"> <option value="0"><?php printf( '— %s —', esc_html__( 'Select a Menu' ) ); ?></option> <?php foreach ( $nav_menus as $menu ) : $data_orig = ''; $selected = isset( $menu_locations[ $_location ] ) && $menu_locations[ $_location ] === $menu->term_id; if ( $selected ) { $data_orig = 'data-orig="true"'; } ?> <option <?php echo $data_orig; ?> <?php selected( $selected ); ?> value="<?php echo $menu->term_id; ?>"> <?php echo wp_html_excerpt( $menu->name, 40, '…' ); ?> </option> <?php endforeach; ?> </select> <div class="locations-row-links"> <?php if ( isset( $menu_locations[ $_location ] ) && 0 !== $menu_locations[ $_location ] ) : ?> <span class="locations-edit-menu-link"> <?php printf( '<a href="%1$s"> <span aria-hidden="true">%2$s</span> <span class="screen-reader-text">%3$s</span> </a>', esc_url( add_query_arg( array( 'action' => 'edit', 'menu' => $menu_locations[ $_location ], ), admin_url( 'nav-menus.php' ) ) ), _x( 'Edit', 'menu' ), / translators: Hidden accessibility text. / __( 'Edit selected menu' ) ); ?> </span> <?php endif; ?> <span class="locations-add-menu-link"> <?php printf( '<a href="%1$s">%2$s</a>', esc_url( add_query_arg( array( 'action' => 'edit', 'menu' => 0, 'use-location' => $_location, ), admin_url( 'nav-menus.php' ) ) ), _x( 'Use new menu', 'menu' ) ); ?> </span> </div><!-- .locations-row-links --> </td><!-- .menu-location-menus --> </tr><!-- .menu-locations-row --> <?php } // End foreach. ?> </tbody> </table> <p class="button-controls wp-clearfix"><?php submit_button( __( 'Save Changes' ), 'primary left', 'nav-menu-locations', false ); ?></p> <?php wp_nonce_field( 'save-menu-locations' ); ?> <input type="hidden" name="menu" id="nav-menu-meta-object-id" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" /> </form> </div><!-- #menu-locations-wrap --> <?php /* * Fires after the menu locations table is displayed. * * @since 3.6.0 / do_action( 'after_menu_locations_table' ); ?> <?php else : ?> <div class="manage-menus"> <?php if ( $menu_count < 1 ) : ?> <span class="first-menu-message"> <?php _e( 'Create your first menu below.' ); ?> <span class="screen-reader-text"> <?php / translators: Hidden accessibility text. / _e( 'Fill in the Menu Name and click the Create Menu button to create your first menu.' ); ?> </span> </span><!-- /first-menu-message --> <?php elseif ( $menu_count < 2 ) : ?> <span class="add-edit-menu-action"> <?php printf( / translators: %s: URL to create a new menu. / __( 'Edit your menu below, or <a href="%s">create a new menu</a>. Do not forget to save your changes!' ), esc_url( add_query_arg( array( 'action' => 'edit', 'menu' => 0, ), admin_url( 'nav-menus.php' ) ) ) ); ?> <span class="screen-reader-text"> <?php / translators: Hidden accessibility text. / _e( 'Click the Save Menu button to save your changes.' ); ?> </span> </span><!-- /add-edit-menu-action --> <?php else : ?> <form method="get" action="<?php echo esc_url( admin_url( 'nav-menus.php' ) ); ?>"> <input type="hidden" name="action" value="edit" /> <label for="select-menu-to-edit" class="selected-menu"><?php _e( 'Select a menu to edit:' ); ?></label> <select name="menu" id="select-menu-to-edit"> <?php if ( $add_new_screen ) : ?> <option value="0" selected="selected"><?php _e( '— Select —' ); ?></option> <?php endif; ?> <?php foreach ( (array) $nav_menus as $_nav_menu ) : ?> <option value="<?php echo esc_attr( $_nav_menu->term_id ); ?>" <?php selected( $_nav_menu->term_id, $nav_menu_selected_id ); ?>> <?php echo esc_html( $_nav_menu->truncated_name ); if ( ! empty( $menu_locations ) && in_array( $_nav_menu->term_id, $menu_locations, true ) ) { $locations_assigned_to_this_menu = array(); foreach ( array_keys( $menu_locations, $_nav_menu->term_id, true ) as $menu_location_key ) { if ( isset( $locations[ $menu_location_key ] ) ) { $locations_assigned_to_this_menu[] = $locations[ $menu_location_key ]; } } /* * Filters the number of locations listed per menu in the drop-down select. * * @since 3.6.0 * * @param int $locations Number of menu locations to list. Default 3. / $locations_listed_per_menu = absint( apply_filters( 'wp_nav_locations_listed_per_menu', 3 ) ); $assigned_locations = array_slice( $locations_assigned_to_this_menu, 0, $locations_listed_per_menu ); // Adds ellipses following the number of locations defined in $assigned_locations. if ( ! empty( $assigned_locations ) ) { printf( ' (%1$s%2$s)', implode( ', ', $assigned_locations ), count( $locations_assigned_to_this_menu ) > count( $assigned_locations ) ? ' …' : '' ); } } ?> </option> <?php endforeach; ?> </select> <span class="submit-btn"><input type="submit" class="button" value="<?php esc_attr_e( 'Select' ); ?>"></span> <span class="add-new-menu-action"> <?php printf( / translators: %s: URL to create a new menu. / __( 'or <a href="%s">create a new menu</a>. Do not forget to save your changes!' ), esc_url( add_query_arg( array( 'action' => 'edit', 'menu' => 0, ), admin_url( 'nav-menus.php' ) ) ) ); ?> <span class="screen-reader-text"> <?php / translators: Hidden accessibility text. / _e( 'Click the Save Menu button to save your changes.' ); ?> </span> </span><!-- /add-new-menu-action --> </form> <?php endif; $metabox_holder_disabled_class = ''; if ( isset( $_GET['menu'] ) && 0 === (int) $_GET['menu'] ) { $metabox_holder_disabled_class = ' metabox-holder-disabled'; } ?> </div><!-- /manage-menus --> <div id="nav-menus-frame" class="wp-clearfix"> <div id="menu-settings-column" class="metabox-holder<?php echo $metabox_holder_disabled_class; ?>"> <div class="clear"></div> <form id="nav-menu-meta" class="nav-menu-meta" method="post" enctype="multipart/form-data"> <input type="hidden" name="menu" id="nav-menu-meta-object-id" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" /> <input type="hidden" name="action" value="add-menu-item" /> <?php wp_nonce_field( 'add-menu_item', 'menu-settings-column-nonce' ); ?> <h2><?php _e( 'Add menu items' ); ?></h2> <?php do_accordion_sections( 'nav-menus', 'side', null ); ?> </form> </div><!-- /#menu-settings-column --> <div id="menu-management-liquid"> <div id="menu-management"> <form id="update-nav-menu" method="post" enctype="multipart/form-data"> <h2><?php _e( 'Menu structure' ); ?></h2> <div class="menu-edit"> <input type="hidden" name="nav-menu-data"> <?php wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false ); wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false ); wp_nonce_field( 'update-nav_menu', 'update-nav-menu-nonce' ); $menu_name_aria_desc = $add_new_screen ? ' aria-describedby="menu-name-desc"' : ''; if ( $one_theme_location_no_menus ) { $menu_name_val = 'value="' . esc_attr__( 'Menu 1' ) . '"'; ?> <input type="hidden" name="zero-menu-state" value="true" /> <?php } else { $menu_name_val = 'value="' . esc_attr( $nav_menu_selected_title ) . '"'; } ?> <input type="hidden" name="action" value="update" /> <input type="hidden" name="menu" id="menu" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" /> <div id="nav-menu-header"> <div class="major-publishing-actions wp-clearfix"> <label class="menu-name-label" for="menu-name"><?php _e( 'Menu Name' ); ?></label> <input name="menu-name" id="menu-name" type="text" class="menu-name regular-text menu-item-textbox form-required" required="required" <?php echo $menu_name_val . $menu_name_aria_desc; ?> /> <div class="publishing-action"> <?php submit_button( empty( $nav_menu_selected_id ) ? __( 'Create Menu' ) : __( 'Save Menu' ), 'primary large menu-save', 'save_menu', false, array( 'id' => 'save_menu_header' ) ); ?> </div><!-- END .publishing-action --> </div><!-- END .major-publishing-actions --> </div><!-- END .nav-menu-header --> <div id="post-body"> <div id="post-body-content" class="wp-clearfix"> <?php if ( ! $add_new_screen ) : ?> <?php $hide_style = ''; if ( isset( $menu_items ) && 0 === count( $menu_items ) ) { $hide_style = 'style="display: none;"'; } if ( $one_theme_location_no_menus ) { $starter_copy = __( 'Edit your default menu by adding or removing items. Drag the items into the order you prefer. Click Create Menu to save your changes.' ); } else { $starter_copy = __( 'Drag the items into the order you prefer. Click the arrow on the right of the item to reveal additional configuration options.' ); } ?> <div class="drag-instructions post-body-plain" <?php echo $hide_style; ?>> <p><?php echo $starter_copy; ?></p> </div> <div id="nav-menu-bulk-actions-top" class="bulk-actions" <?php echo $hide_style; ?>> <label class="bulk-select-button" for="bulk-select-switcher-top"> <input type="checkbox" id="bulk-select-switcher-top" name="bulk-select-switcher-top" class="bulk-select-switcher"> <span class="bulk-select-button-label"><?php _e( 'Bulk Select' ); ?></span> </label> </div> <?php if ( isset( $edit_markup ) && ! is_wp_error( $edit_markup ) ) { echo $edit_markup; } else { ?> <ul class="menu" id="menu-to-edit"></ul> <?php } ?> <?php endif; ?> <?php if ( $add_new_screen ) : ?> <p class="post-body-plain" id="menu-name-desc"><?php _e( 'Give your menu a name, then click Create Menu.' ); ?></p> <?php if ( isset( $_GET['use-location'] ) ) : ?> <input type="hidden" name="use-location" value="<?php echo esc_attr( $_GET['use-location'] ); ?>" /> <?php endif; ?> <?php endif; $no_menus_style = ''; if ( $one_theme_location_no_menus ) { $no_menus_style = 'style="display: none;"'; } ?> <?php if ( ! $add_new_screen ) : ?> <div id="nav-menu-bulk-actions-bottom" class="bulk-actions" <?php echo $hide_style; ?>> <label class="bulk-select-button" for="bulk-select-switcher-bottom"> <input type="checkbox" id="bulk-select-switcher-bottom" name="bulk-select-switcher-top" class="bulk-select-switcher"> <span class="bulk-select-button-label"><?php _e( 'Bulk Select' ); ?></span> </label> <input type="button" class="deletion menu-items-delete disabled" value="<?php esc_attr_e( 'Remove Selected Items' ); ?>"> <div id="pending-menu-items-to-delete"> <p><?php _e( 'List of menu items selected for deletion:' ); ?></p> <ul></ul> </div> </div> <?php endif; ?> <div class="menu-settings" <?php echo $no_menus_style; ?>> <h3><?php _e( 'Menu Settings' ); ?></h3> <?php if ( ! isset( $auto_add ) ) { $auto_add = get_option( 'nav_menu_options' ); if ( ! isset( $auto_add['auto_add'] ) ) { $auto_add = false; } elseif ( false !== array_search( $nav_menu_selected_id, $auto_add['auto_add'], true ) ) { $auto_add = true; } else { $auto_add = false; } } ?> <fieldset class="menu-settings-group auto-add-pages"> <legend class="menu-settings-group-name howto"><?php _e( 'Auto add pages' ); ?></legend> <div class="menu-settings-input checkbox-input"> <input type="checkbox"<?php checked( $auto_add ); ?> name="auto-add-pages" id="auto-add-pages" value="1" /> <label for="auto-add-pages"><?php printf( __( 'Automatically add new top-level pages to this menu' ), esc_url( admin_url( 'edit.php?post_type=page' ) ) ); ?></label> </div> </fieldset> <?php if ( current_theme_supports( 'menus' ) ) : ?> <fieldset class="menu-settings-group menu-theme-locations"> <legend class="menu-settings-group-name howto"><?php _e( 'Display location' ); ?></legend> <?php foreach ( $locations as $location => $description ) : $checked = false; if ( isset( $menu_locations[ $location ] ) && 0 !== $nav_menu_selected_id && $menu_locations[ $location ] === $nav_menu_selected_id ) { $checked = true; } ?> <div class="menu-settings-input checkbox-input"> <input type="checkbox"<?php checked( $checked ); ?> name="menu-locations[<?php echo esc_attr( $location ); ?>]" id="locations-<?php echo esc_attr( $location ); ?>" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" /> <label for="locations-<?php echo esc_attr( $location ); ?>"><?php echo $description; ?></label> <?php if ( ! empty( $menu_locations[ $location ] ) && $menu_locations[ $location ] !== $nav_menu_selected_id ) : ?> <span class="theme-location-set"> <?php printf( / translators: %s: Menu name. */ _x( '(Currently set to: %s)', 'menu location' ), wp_get_nav_menu_object( $menu_locations[ $location ] )->name ); ?> </span> <?php endif; ?> </div> <?php endforeach; ?> </fieldset> <?php endif; ?> </div> </div><!-- /#post-body-content --> </div><!-- /#post-body --> <div id="nav-menu-footer"> <div class="major-publishing-actions"> <div class="publishing-action"> <?php submit_button( empty( $nav_menu_selected_id ) ? __( 'Create Menu' ) : __( 'Save Menu' ), 'primary large menu-save', 'save_menu', false, array( 'id' => 'save_menu_footer' ) ); ?> </div><!-- END .publishing-action --> <?php if ( $menu_count > 0 ) : ?> <?php if ( $add_new_screen ) : ?> <span class="cancel-action"> <?php printf( '<a class="submitcancel cancellation menu-cancel" href="%1$s">%2$s</a>', esc_url( admin_url( 'nav-menus.php' ) ), __( 'Cancel' ) ); ?> </span><!-- END .cancel-action --> <?php else : ?> <span class="delete-action"> <?php printf( '<a class="submitdelete deletion menu-delete" href="%1$s">%2$s</a>', esc_url( wp_nonce_url( add_query_arg( array( 'action' => 'delete', 'menu' => $nav_menu_selected_id, ), admin_url( 'nav-menus.php' ) ), 'delete-nav_menu-' . $nav_menu_selected_id ) ), __( 'Delete Menu' ) ); ?> </span><!-- END .delete-action --> <?php endif; ?> <?php endif; ?> </div><!-- END .major-publishing-actions --> </div><!-- /#nav-menu-footer --> </div><!-- /.menu-edit --> </form><!-- /#update-nav-menu --> </div><!-- /#menu-management --> </div><!-- /#menu-management-liquid --> </div><!-- /#nav-menus-frame --> <?php endif; ?> </div><!-- /.wrap--> <?php require_once ABSPATH . 'wp-admin/admin-footer.php'; ?> Back

Edit File : nav-menus.php | Size : 48.19 KB

<?php
/**
 * WordPress Administration for Navigation Menus
 * Interface functions
 *
 * @version 2.0.0
 *
 * @package WordPress
 * @subpackage Administration
 */

/** Load WordPress Administration Bootstrap */
require_once __DIR__ . '/admin.php';

// Load all the nav menu interface functions.
require_once ABSPATH . 'wp-admin/includes/nav-menu.php';

if ( ! current_theme_supports( 'menus' ) && ! current_theme_supports( 'widgets' ) ) {
	wp_die( __( 'Your theme does not support navigation menus or widgets.' ) );
}

// Permissions check.
if ( ! current_user_can( 'edit_theme_options' ) ) {
	wp_die(
		'<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
		'<p>' . __( 'Sorry, you are not allowed to edit theme options on this site.' ) . '</p>',
		403
	);
}

// Used in the HTML title tag.
$title = __( 'Menus' );

wp_enqueue_script( 'nav-menu' );

if ( wp_is_mobile() ) {
	wp_enqueue_script( 'jquery-touch-punch' );
}

// Container for any messages displayed to the user.
$messages = array();

// Container that stores the name of the active menu.
$nav_menu_selected_title = '';

// The menu id of the current menu being edited.
$nav_menu_selected_id = isset( $_REQUEST['menu'] ) ? (int) $_REQUEST['menu'] : 0;

// Get existing menu locations assignments.
$locations      = get_registered_nav_menus();
$menu_locations = get_nav_menu_locations();
$num_locations  = count( array_keys( $locations ) );

// Allowed actions: add, update, delete.
$action = isset( $_REQUEST['action'] ) ? $_REQUEST['action'] : 'edit';

/*
 * If a JSON blob of navigation menu data is found, expand it and inject it
 * into `$_POST` to avoid PHP `max_input_vars` limitations. See #14134.
 */
_wp_expand_nav_menu_post_data();

switch ( $action ) {
	case 'add-menu-item':
		check_admin_referer( 'add-menu_item', 'menu-settings-column-nonce' );

if ( isset( $_REQUEST['nav-menu-locations'] ) ) {
			set_theme_mod( 'nav_menu_locations', array_map( 'absint', $_REQUEST['menu-locations'] ) );
		} elseif ( isset( $_REQUEST['menu-item'] ) ) {
			wp_save_nav_menu_items( $nav_menu_selected_id, $_REQUEST['menu-item'] );
		}

break;

case 'move-down-menu-item':
		// Moving down a menu item is the same as moving up the next in order.
		check_admin_referer( 'move-menu_item' );

$menu_item_id = isset( $_REQUEST['menu-item'] ) ? (int) $_REQUEST['menu-item'] : 0;

if ( is_nav_menu_item( $menu_item_id ) ) {
			$menus = isset( $_REQUEST['menu'] ) ? array( (int) $_REQUEST['menu'] ) : wp_get_object_terms( $menu_item_id, 'nav_menu', array( 'fields' => 'ids' ) );

if ( ! is_wp_error( $menus ) && ! empty( $menus[0] ) ) {
				$menu_id            = (int) $menus[0];
				$ordered_menu_items = wp_get_nav_menu_items( $menu_id );
				$menu_item_data     = (array) wp_setup_nav_menu_item( get_post( $menu_item_id ) );

// Set up the data we need in one pass through the array of menu items.
				$dbids_to_orders = array();
				$orders_to_dbids = array();

foreach ( (array) $ordered_menu_items as $ordered_menu_item_object ) {
					if ( isset( $ordered_menu_item_object->ID ) ) {
						if ( isset( $ordered_menu_item_object->menu_order ) ) {
							$dbids_to_orders[ $ordered_menu_item_object->ID ]         = $ordered_menu_item_object->menu_order;
							$orders_to_dbids[ $ordered_menu_item_object->menu_order ] = $ordered_menu_item_object->ID;
						}
					}
				}

// Get next in order.
				if ( isset( $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] + 1 ] ) ) {
					$next_item_id   = $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] + 1 ];
					$next_item_data = (array) wp_setup_nav_menu_item( get_post( $next_item_id ) );

// If not siblings of same parent, bubble menu item up but keep order.
					if ( ! empty( $menu_item_data['menu_item_parent'] )
						&& ( empty( $next_item_data['menu_item_parent'] )
							|| (int) $next_item_data['menu_item_parent'] !== (int) $menu_item_data['menu_item_parent'] )
					) {
						if ( in_array( (int) $menu_item_data['menu_item_parent'], $orders_to_dbids, true ) ) {
							$parent_db_id = (int) $menu_item_data['menu_item_parent'];
						} else {
							$parent_db_id = 0;
						}

$parent_object = wp_setup_nav_menu_item( get_post( $parent_db_id ) );

if ( ! is_wp_error( $parent_object ) ) {
							$parent_data                        = (array) $parent_object;
							$menu_item_data['menu_item_parent'] = $parent_data['menu_item_parent'];

// Reset invalid `menu_item_parent`.
							$menu_item_data = _wp_reset_invalid_menu_item_parent( $menu_item_data );

update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] );
						}

// Make menu item a child of its next sibling.
					} else {
						$next_item_data['menu_order'] = $next_item_data['menu_order'] - 1;
						$menu_item_data['menu_order'] = $menu_item_data['menu_order'] + 1;

$menu_item_data['menu_item_parent'] = $next_item_data['ID'];

// Reset invalid `menu_item_parent`.
						$menu_item_data = _wp_reset_invalid_menu_item_parent( $menu_item_data );

update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] );

wp_update_post( $menu_item_data );
						wp_update_post( $next_item_data );
					}

// The item is last but still has a parent, so bubble up.
				} elseif ( ! empty( $menu_item_data['menu_item_parent'] )
					&& in_array( (int) $menu_item_data['menu_item_parent'], $orders_to_dbids, true )
				) {
					$menu_item_data['menu_item_parent'] = (int) get_post_meta( $menu_item_data['menu_item_parent'], '_menu_item_menu_item_parent', true );

// Reset invalid `menu_item_parent`.
					$menu_item_data = _wp_reset_invalid_menu_item_parent( $menu_item_data );

update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] );
				}
			}
		}

break;

case 'move-up-menu-item':
		check_admin_referer( 'move-menu_item' );

$menu_item_id = isset( $_REQUEST['menu-item'] ) ? (int) $_REQUEST['menu-item'] : 0;

if ( is_nav_menu_item( $menu_item_id ) ) {
			if ( isset( $_REQUEST['menu'] ) ) {
				$menus = array( (int) $_REQUEST['menu'] );
			} else {
				$menus = wp_get_object_terms( $menu_item_id, 'nav_menu', array( 'fields' => 'ids' ) );
			}

// Set up the data we need in one pass through the array of menu items.
				$dbids_to_orders = array();
				$orders_to_dbids = array();

// If this menu item is not first.
				if ( ! empty( $dbids_to_orders[ $menu_item_id ] )
					&& ! empty( $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ] )
				) {

// If this menu item is a child of the previous.
					if ( ! empty( $menu_item_data['menu_item_parent'] )
						&& in_array( (int) $menu_item_data['menu_item_parent'], array_keys( $dbids_to_orders ), true )
						&& isset( $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ] )
						&& ( (int) $menu_item_data['menu_item_parent'] === $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ] )
					) {
						if ( in_array( (int) $menu_item_data['menu_item_parent'], $orders_to_dbids, true ) ) {
							$parent_db_id = (int) $menu_item_data['menu_item_parent'];
						} else {
							$parent_db_id = 0;
						}

$parent_object = wp_setup_nav_menu_item( get_post( $parent_db_id ) );

if ( ! is_wp_error( $parent_object ) ) {
							$parent_data = (array) $parent_object;

/*
							 * If there is something before the parent and parent a child of it,
							 * make menu item a child also of it.
							 */
							if ( ! empty( $dbids_to_orders[ $parent_db_id ] )
								&& ! empty( $orders_to_dbids[ $dbids_to_orders[ $parent_db_id ] - 1 ] )
								&& ! empty( $parent_data['menu_item_parent'] )
							) {
								$menu_item_data['menu_item_parent'] = $parent_data['menu_item_parent'];

/*
								* Else if there is something before parent and parent not a child of it,
								* make menu item a child of that something's parent
								*/
							} elseif ( ! empty( $dbids_to_orders[ $parent_db_id ] )
								&& ! empty( $orders_to_dbids[ $dbids_to_orders[ $parent_db_id ] - 1 ] )
							) {
								$_possible_parent_id = (int) get_post_meta( $orders_to_dbids[ $dbids_to_orders[ $parent_db_id ] - 1 ], '_menu_item_menu_item_parent', true );

if ( in_array( $_possible_parent_id, array_keys( $dbids_to_orders ), true ) ) {
									$menu_item_data['menu_item_parent'] = $_possible_parent_id;
								} else {
									$menu_item_data['menu_item_parent'] = 0;
								}

// Else there isn't something before the parent.
							} else {
								$menu_item_data['menu_item_parent'] = 0;
							}

// Set former parent's [menu_order] to that of menu-item's.
							$parent_data['menu_order'] = $parent_data['menu_order'] + 1;

// Set menu-item's [menu_order] to that of former parent.
							$menu_item_data['menu_order'] = $menu_item_data['menu_order'] - 1;

// Save changes.
							update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] );
							wp_update_post( $menu_item_data );
							wp_update_post( $parent_data );
						}

// Else this menu item is not a child of the previous.
					} elseif ( empty( $menu_item_data['menu_order'] )
						|| empty( $menu_item_data['menu_item_parent'] )
						|| ! in_array( (int) $menu_item_data['menu_item_parent'], array_keys( $dbids_to_orders ), true )
						|| empty( $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ] )
						|| $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ] !== (int) $menu_item_data['menu_item_parent']
					) {
						// Just make it a child of the previous; keep the order.
						$menu_item_data['menu_item_parent'] = (int) $orders_to_dbids[ $dbids_to_orders[ $menu_item_id ] - 1 ];

// Reset invalid `menu_item_parent`.
						$menu_item_data = _wp_reset_invalid_menu_item_parent( $menu_item_data );

update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] );
						wp_update_post( $menu_item_data );
					}
				}
			}
		}

break;

case 'delete-menu-item':
		$menu_item_id = (int) $_REQUEST['menu-item'];

check_admin_referer( 'delete-menu_item_' . $menu_item_id );

if ( is_nav_menu_item( $menu_item_id ) && wp_delete_post( $menu_item_id, true ) ) {
			$messages[] = wp_get_admin_notice(
				__( 'The menu item has been successfully deleted.' ),
				array(
					'id'                 => 'message',
					'additional_classes' => array( 'updated' ),
					'dismissible'        => true,
				)
			);
		}

break;

case 'delete':
		check_admin_referer( 'delete-nav_menu-' . $nav_menu_selected_id );

if ( is_nav_menu( $nav_menu_selected_id ) ) {
			$deletion = wp_delete_nav_menu( $nav_menu_selected_id );
		} else {
			// Reset the selected menu.
			$nav_menu_selected_id = 0;
			unset( $_REQUEST['menu'] );
		}

if ( ! isset( $deletion ) ) {
			break;
		}

if ( is_wp_error( $deletion ) ) {
			$messages[] = wp_get_admin_notice(
				$deletion->get_error_message(),
				array(
					'id'                 => 'message',
					'additional_classes' => array( 'error' ),
					'dismissible'        => true,
				)
			);
		} else {
			$messages[] = wp_get_admin_notice(
				__( 'The menu has been successfully deleted.' ),
				array(
					'id'                 => 'message',
					'additional_classes' => array( 'updated' ),
					'dismissible'        => true,
				)
			);
		}

break;

case 'delete_menus':
		check_admin_referer( 'nav_menus_bulk_actions' );

foreach ( $_REQUEST['delete_menus'] as $menu_id_to_delete ) {
			if ( ! is_nav_menu( $menu_id_to_delete ) ) {
				continue;
			}

$deletion = wp_delete_nav_menu( $menu_id_to_delete );

if ( empty( $deletion_error ) ) {
			$messages[] = wp_get_admin_notice(
				__( 'Selected menus have been successfully deleted.' ),
				array(
					'id'                 => 'message',
					'additional_classes' => array( 'updated' ),
					'dismissible'        => true,
				)
			);
		}

break;

case 'update':
		check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' );

// Merge new and existing menu locations if any new ones are set.
		$new_menu_locations = array();
		if ( isset( $_POST['menu-locations'] ) ) {
			$new_menu_locations = array_map( 'absint', $_POST['menu-locations'] );
			$menu_locations     = array_merge( $menu_locations, $new_menu_locations );
		}

// Add Menu.
		if ( 0 === $nav_menu_selected_id ) {
			$new_menu_title = trim( esc_html( $_POST['menu-name'] ) );

if ( $new_menu_title ) {
				$_nav_menu_selected_id = wp_update_nav_menu_object( 0, array( 'menu-name' => $new_menu_title ) );

if ( is_wp_error( $_nav_menu_selected_id ) ) {
					$messages[] = wp_get_admin_notice(
						$_nav_menu_selected_id->get_error_message(),
						array(
							'id'                 => 'message',
							'additional_classes' => array( 'error' ),
							'dismissible'        => true,
						)
					);
				} else {
					$_menu_object            = wp_get_nav_menu_object( $_nav_menu_selected_id );
					$nav_menu_selected_id    = $_nav_menu_selected_id;
					$nav_menu_selected_title = $_menu_object->name;

if ( isset( $_REQUEST['menu-item'] ) ) {
						wp_save_nav_menu_items( $nav_menu_selected_id, absint( $_REQUEST['menu-item'] ) );
					}

if ( isset( $_REQUEST['zero-menu-state'] ) || ! empty( $_POST['auto-add-pages'] ) ) {
						// If there are menu items, add them.
						wp_nav_menu_update_menu_items( $nav_menu_selected_id, $nav_menu_selected_title );
					}

if ( isset( $_REQUEST['zero-menu-state'] ) ) {
						// Auto-save nav_menu_locations.
						$locations = get_nav_menu_locations();

foreach ( $locations as $location => $menu_id ) {
								$locations[ $location ] = $nav_menu_selected_id;
								break; // There should only be 1.
						}

set_theme_mod( 'nav_menu_locations', $locations );
					} elseif ( count( $new_menu_locations ) > 0 ) {
						// If locations have been selected for the new menu, save those.
						$locations = get_nav_menu_locations();

foreach ( array_keys( $new_menu_locations ) as $location ) {
							$locations[ $location ] = $nav_menu_selected_id;
						}

set_theme_mod( 'nav_menu_locations', $locations );
					}

if ( isset( $_REQUEST['use-location'] ) ) {
						$locations      = get_registered_nav_menus();
						$menu_locations = get_nav_menu_locations();

if ( isset( $locations[ $_REQUEST['use-location'] ] ) ) {
							$menu_locations[ $_REQUEST['use-location'] ] = $nav_menu_selected_id;
						}

set_theme_mod( 'nav_menu_locations', $menu_locations );
					}

wp_redirect( admin_url( 'nav-menus.php?menu=' . $_nav_menu_selected_id ) );
					exit;
				}
			} else {
				$messages[] = wp_get_admin_notice(
					__( 'Please enter a valid menu name.' ),
					array(
						'id'                 => 'message',
						'additional_classes' => array( 'error' ),
						'dismissible'        => true,
					)
				);
			}

// Update existing menu.
		} else {
			// Remove menu locations that have been unchecked.
			foreach ( $locations as $location => $description ) {
				if ( ( empty( $_POST['menu-locations'] ) || empty( $_POST['menu-locations'][ $location ] ) )
					&& isset( $menu_locations[ $location ] ) && $menu_locations[ $location ] === $nav_menu_selected_id
				) {
					unset( $menu_locations[ $location ] );
				}
			}

// Set menu locations.
			set_theme_mod( 'nav_menu_locations', $menu_locations );

$_menu_object = wp_get_nav_menu_object( $nav_menu_selected_id );

$menu_title = trim( esc_html( $_POST['menu-name'] ) );

if ( ! $menu_title ) {
				$messages[] = wp_get_admin_notice(
					__( 'Please enter a valid menu name.' ),
					array(
						'id'                 => 'message',
						'additional_classes' => array( 'error' ),
						'dismissible'        => true,
					)
				);
				$menu_title = $_menu_object->name;
			}

if ( ! is_wp_error( $_menu_object ) ) {
				$_nav_menu_selected_id = wp_update_nav_menu_object( $nav_menu_selected_id, array( 'menu-name' => $menu_title ) );

if ( is_wp_error( $_nav_menu_selected_id ) ) {
					$_menu_object = $_nav_menu_selected_id;
					$messages[]   = wp_get_admin_notice(
						$_nav_menu_selected_id->get_error_message(),
						array(
							'id'                 => 'message',
							'additional_classes' => array( 'error' ),
							'dismissible'        => true,
						)
					);
				} else {
					$_menu_object            = wp_get_nav_menu_object( $_nav_menu_selected_id );
					$nav_menu_selected_title = $_menu_object->name;
				}
			}

// Update menu items.
			if ( ! is_wp_error( $_menu_object ) ) {
				$messages = array_merge( $messages, wp_nav_menu_update_menu_items( $_nav_menu_selected_id, $nav_menu_selected_title ) );

// If the menu ID changed, redirect to the new URL.
				if ( $nav_menu_selected_id !== $_nav_menu_selected_id ) {
					wp_redirect( admin_url( 'nav-menus.php?menu=' . (int) $_nav_menu_selected_id ) );
					exit;
				}
			}
		}

break;

case 'locations':
		if ( ! $num_locations ) {
			wp_redirect( admin_url( 'nav-menus.php' ) );
			exit;
		}

add_filter( 'screen_options_show_screen', '__return_false' );

if ( isset( $_POST['menu-locations'] ) ) {
			check_admin_referer( 'save-menu-locations' );

$new_menu_locations = array_map( 'absint', $_POST['menu-locations'] );
			$menu_locations     = array_merge( $menu_locations, $new_menu_locations );
			// Set menu locations.
			set_theme_mod( 'nav_menu_locations', $menu_locations );

$messages[] = wp_get_admin_notice(
				__( 'Menu locations updated.' ),
				array(
					'id'                 => 'message',
					'additional_classes' => array( 'updated' ),
					'dismissible'        => true,
				)
			);
		}

break;
}

// Get all nav menus.
$nav_menus  = wp_get_nav_menus();
$menu_count = count( $nav_menus );

// Are we on the add new screen?
$add_new_screen = ( isset( $_GET['menu'] ) && 0 === (int) $_GET['menu'] ) ? true : false;

$locations_screen = ( isset( $_GET['action'] ) && 'locations' === $_GET['action'] ) ? true : false;

$page_count = wp_count_posts( 'page' );

/*
 * If we have one theme location, and zero menus, we take them right
 * into editing their first menu.
 */
if ( 1 === count( get_registered_nav_menus() ) && ! $add_new_screen
	&& empty( $nav_menus ) && ! empty( $page_count->publish )
) {
	$one_theme_location_no_menus = true;
} else {
	$one_theme_location_no_menus = false;
}

$nav_menus_l10n = array(
	'oneThemeLocationNoMenus' => $one_theme_location_no_menus,
	'moveUp'                  => __( 'Move up one' ),
	'moveDown'                => __( 'Move down one' ),
	'moveToTop'               => __( 'Move to the top' ),
	/* translators: %s: Previous item name. */
	'moveUnder'               => __( 'Move under %s' ),
	/* translators: %s: Previous item name. */
	'moveOutFrom'             => __( 'Move out from under %s' ),
	/* translators: %s: Previous item name. */
	'under'                   => __( 'Under %s' ),
	/* translators: %s: Previous item name. */
	'outFrom'                 => __( 'Out from under %s' ),
	/* translators: 1: Item name, 2: Item type, 3: Item index, 4: Total items. */
	'menuFocus'               => __( 'Edit %1$s (%2$s, %3$d of %4$d)' ),
	/* translators: 1: Item name, 2: Item type, 3: Item index, 4: Total items, 5: Item parent. */
	'subMenuFocus'            => __( 'Edit %1$s (%2$s, sub-item %3$d of %4$d under %5$s)' ),
	/* translators: 1: Item name, 2: Item type, 3: Item index, 4: Total items, 5: Item parent, 6: Item depth. */
	'subMenuMoreDepthFocus'   => __( 'Edit %1$s (%2$s, sub-item %3$d of %4$d under %5$s, level %6$d)' ),
	/* translators: %s: Item name. */
	'menuItemDeletion'        => __( 'item %s' ),
	/* translators: %s: Item name. */
	'itemsDeleted'            => __( 'Deleted menu item: %s.' ),
	'itemAdded'               => __( 'Menu item added' ),
	'itemRemoved'             => __( 'Menu item removed' ),
	'movedUp'                 => __( 'Menu item moved up' ),
	'movedDown'               => __( 'Menu item moved down' ),
	'movedTop'                => __( 'Menu item moved to the top' ),
	'movedLeft'               => __( 'Menu item moved out of submenu' ),
	'movedRight'              => __( 'Menu item is now a sub-item' ),
	'parentUpdated'           => __( 'Menu parent updated' ),
	'orderUpdated'            => __( 'Menu order updated' ),
);
wp_localize_script( 'nav-menu', 'menus', $nav_menus_l10n );

/*
 * Redirect to add screen if there are no menus and this users has either zero,
 * or more than 1 theme locations.
 */
if ( 0 === $menu_count && ! $add_new_screen && ! $one_theme_location_no_menus ) {
	wp_redirect( admin_url( 'nav-menus.php?action=edit&menu=0' ) );
}

// Get recently edited nav menu.
$recently_edited = absint( get_user_option( 'nav_menu_recently_edited' ) );
if ( empty( $recently_edited ) && is_nav_menu( $nav_menu_selected_id ) ) {
	$recently_edited = $nav_menu_selected_id;
}

// Use $recently_edited if none are selected.
if ( empty( $nav_menu_selected_id ) && ! isset( $_GET['menu'] ) && is_nav_menu( $recently_edited ) ) {
	$nav_menu_selected_id = $recently_edited;
}

// On deletion of menu, if another menu exists, show it.
if ( ! $add_new_screen && $menu_count > 0 && isset( $_GET['action'] ) && 'delete' === $_GET['action'] ) {
	$nav_menu_selected_id = $nav_menus[0]->term_id;
}

// Set $nav_menu_selected_id to 0 if no menus.
if ( $one_theme_location_no_menus ) {
	$nav_menu_selected_id = 0;
} elseif ( empty( $nav_menu_selected_id ) && ! empty( $nav_menus ) && ! $add_new_screen ) {
	// If we have no selection yet, and we have menus, set to the first one in the list.
	$nav_menu_selected_id = $nav_menus[0]->term_id;
}

// Update the user's setting.
if ( $nav_menu_selected_id !== $recently_edited && is_nav_menu( $nav_menu_selected_id ) ) {
	update_user_meta( $current_user->ID, 'nav_menu_recently_edited', $nav_menu_selected_id );
}

// If there's a menu, get its name.
if ( ! $nav_menu_selected_title && is_nav_menu( $nav_menu_selected_id ) ) {
	$_menu_object            = wp_get_nav_menu_object( $nav_menu_selected_id );
	$nav_menu_selected_title = ! is_wp_error( $_menu_object ) ? $_menu_object->name : '';
}

// Generate truncated menu names.
foreach ( (array) $nav_menus as $key => $_nav_menu ) {
	$nav_menus[ $key ]->truncated_name = wp_html_excerpt( $_nav_menu->name, 40, '&hellip;' );
}

// Retrieve menu locations.
if ( current_theme_supports( 'menus' ) ) {
	$locations      = get_registered_nav_menus();
	$menu_locations = get_nav_menu_locations();
}

/*
 * Ensure the user will be able to scroll horizontally
 * by adding a class for the max menu depth.
 *
 * @global int $_wp_nav_menu_max_depth
 */
global $_wp_nav_menu_max_depth;
$_wp_nav_menu_max_depth = 0;

// Calling wp_get_nav_menu_to_edit generates $_wp_nav_menu_max_depth.
if ( is_nav_menu( $nav_menu_selected_id ) ) {
	$menu_items  = wp_get_nav_menu_items( $nav_menu_selected_id, array( 'post_status' => 'any' ) );
	$edit_markup = wp_get_nav_menu_to_edit( $nav_menu_selected_id );
}

/**
 * @since 3.0.0
 *
 * @global int $_wp_nav_menu_max_depth
 *
 * @param string $classes
 * @return string
 */
function wp_nav_menu_max_depth( $classes ) {
	global $_wp_nav_menu_max_depth;
	return "$classes menu-max-depth-$_wp_nav_menu_max_depth";
}

add_filter( 'admin_body_class', 'wp_nav_menu_max_depth' );

wp_nav_menu_setup();
wp_initial_nav_menu_meta_boxes();

if ( ! current_theme_supports( 'menus' ) && ! $num_locations ) {
	$message_no_theme_support = sprintf(
		/* translators: %s: URL to Widgets screen. */
		__( 'Your theme does not natively support menus, but you can use them in sidebars by adding a &#8220;Navigation Menu&#8221; widget on the <a href="%s">Widgets</a> screen.' ),
		admin_url( 'widgets.php' )
	);
	$messages[] = wp_get_admin_notice(
		$message_no_theme_support,
		array(
			'id'                 => 'message',
			'additional_classes' => array( 'updated' ),
			'dismissible'        => true,
		)
	);
}

if ( ! $locations_screen ) : // Main tab.
	$overview  = '<p>' . __( 'This screen is used for managing your navigation menus.' ) . '</p>';
	$overview .= '<p>' . sprintf(
		/* translators: 1: URL to Widgets screen, 2 and 3: The names of the default themes. */
		__( 'Menus can be displayed in locations defined by your theme, even used in sidebars by adding a &#8220;Navigation Menu&#8221; widget on the <a href="%1$s">Widgets</a> screen. If your theme does not support the navigation menus feature (the default themes, %2$s and %3$s, do), you can learn about adding this support by following the documentation link to the side.' ),
		admin_url( 'widgets.php' ),
		'Twenty Twenty',
		'Twenty Twenty-One'
	) . '</p>';
	$overview .= '<p>' . __( 'From this screen you can:' ) . '</p>';
	$overview .= '<ul><li>' . __( 'Create, edit, and delete menus' ) . '</li>';
	$overview .= '<li>' . __( 'Add, organize, and modify individual menu items' ) . '</li></ul>';

get_current_screen()->add_help_tab(
		array(
			'id'      => 'overview',
			'title'   => __( 'Overview' ),
			'content' => $overview,
		)
	);

$menu_management  = '<p>' . __( 'The menu management box at the top of the screen is used to control which menu is opened in the editor below.' ) . '</p>';
	$menu_management .= '<ul><li>' . __( 'To edit an existing menu, <strong>choose a menu from the dropdown and click Select</strong>' ) . '</li>';
	$menu_management .= '<li>' . __( 'If you have not yet created any menus, <strong>click the &#8217;create a new menu&#8217; link</strong> to get started' ) . '</li></ul>';
	$menu_management .= '<p>' . __( 'You can assign theme locations to individual menus by <strong>selecting the desired settings</strong> at the bottom of the menu editor. To assign menus to all theme locations at once, <strong>visit the Manage Locations tab</strong> at the top of the screen.' ) . '</p>';

get_current_screen()->add_help_tab(
		array(
			'id'      => 'menu-management',
			'title'   => __( 'Menu Management' ),
			'content' => $menu_management,
		)
	);

$editing_menus  = '<p>' . __( 'Each navigation menu may contain a mix of links to pages, categories, custom URLs or other content types. Menu links are added by selecting items from the expanding boxes in the left-hand column below.' ) . '</p>';
	$editing_menus .= '<p>' . __( '<strong>Clicking the arrow to the right of any menu item</strong> in the editor will reveal a standard group of settings. Additional settings such as link target, CSS classes, link relationships, and link descriptions can be enabled and disabled via the Screen Options tab.' ) . '</p>';
	$editing_menus .= '<ul><li>' . __( 'Add one or several items at once by <strong>selecting the checkbox next to each item and clicking Add to Menu</strong>' ) . '</li>';
	$editing_menus .= '<li>' . __( 'To add a custom link, <strong>expand the Custom Links section, enter a URL and link text, and click Add to Menu</strong>' ) . '</li>';
	$editing_menus .= '<li>' . __( 'To reorganize menu items, <strong>drag and drop items with your mouse or use your keyboard</strong>. Drag or move a menu item a little to the right to make it a submenu' ) . '</li>';
	$editing_menus .= '<li>' . __( 'Delete a menu item by <strong>expanding it and clicking the Remove link</strong>' ) . '</li></ul>';

get_current_screen()->add_help_tab(
		array(
			'id'      => 'editing-menus',
			'title'   => __( 'Editing Menus' ),
			'content' => $editing_menus,
		)
	);
else : // Locations tab.
	$locations_overview  = '<p>' . __( 'This screen is used for globally assigning menus to locations defined by your theme.' ) . '</p>';
	$locations_overview .= '<ul><li>' . __( 'To assign menus to one or more theme locations, <strong>select a menu from each location&#8217;s dropdown</strong>. When you are finished, <strong>click Save Changes</strong>' ) . '</li>';
	$locations_overview .= '<li>' . __( 'To edit a menu currently assigned to a theme location, <strong>click the adjacent &#8217;Edit&#8217; link</strong>' ) . '</li>';
	$locations_overview .= '<li>' . __( 'To add a new menu instead of assigning an existing one, <strong>click the &#8217;Use new menu&#8217; link</strong>. Your new menu will be automatically assigned to that theme location' ) . '</li></ul>';

get_current_screen()->add_help_tab(
		array(
			'id'      => 'locations-overview',
			'title'   => __( 'Overview' ),
			'content' => $locations_overview,
		)
	);
endif;

get_current_screen()->set_help_sidebar(
	'<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
	'<p>' . __( '<a href="https://wordpress.org/documentation/article/appearance-menus-screen/">Documentation on Menus</a>' ) . '</p>' .
	'<p>' . __( '<a href="https://wordpress.org/support/forums/">Support forums</a>' ) . '</p>'
);

// Get the admin header.
require_once ABSPATH . 'wp-admin/admin-header.php';
?>
<div class="wrap">
	<h1 class="wp-heading-inline"><?php esc_html_e( 'Menus' ); ?></h1>
	<?php
	if ( current_user_can( 'customize' ) ) :
		$focus = $locations_screen ? array( 'section' => 'menu_locations' ) : array( 'panel' => 'nav_menus' );
		printf(
			' <a class="page-title-action hide-if-no-customize" href="%1$s">%2$s</a>',
			esc_url(
				add_query_arg(
					array(
						array( 'autofocus' => $focus ),
						'return' => urlencode( remove_query_arg( wp_removable_query_args(), wp_unslash( $_SERVER['REQUEST_URI'] ) ) ),
					),
					admin_url( 'customize.php' )
				)
			),
			__( 'Manage with Live Preview' )
		);
	endif;

$nav_tab_active_class = '';
	$nav_aria_current     = '';

if ( ! isset( $_GET['action'] ) || isset( $_GET['action'] ) && 'locations' !== $_GET['action'] ) {
		$nav_tab_active_class = ' nav-tab-active';
		$nav_aria_current     = ' aria-current="page"';
	}
	?>

<nav class="nav-tab-wrapper wp-clearfix" aria-label="<?php esc_attr_e( 'Secondary menu' ); ?>">
		<a href="<?php echo esc_url( admin_url( 'nav-menus.php' ) ); ?>" class="nav-tab<?php echo $nav_tab_active_class; ?>"<?php echo $nav_aria_current; ?>><?php esc_html_e( 'Edit Menus' ); ?></a>
		<?php
		if ( $num_locations && $menu_count ) {
			$active_tab_class = '';
			$aria_current     = '';

if ( $locations_screen ) {
				$active_tab_class = ' nav-tab-active';
				$aria_current     = ' aria-current="page"';
			}
			?>
			<a href="<?php echo esc_url( add_query_arg( array( 'action' => 'locations' ), admin_url( 'nav-menus.php' ) ) ); ?>" class="nav-tab<?php echo $active_tab_class; ?>"<?php echo $aria_current; ?>><?php esc_html_e( 'Manage Locations' ); ?></a>
			<?php
		}
		?>
	</nav>
	<?php
	foreach ( $messages as $message ) :
		echo $message . "\n";
	endforeach;
	?>
	<?php
	if ( $locations_screen ) :
		if ( 1 === $num_locations ) {
			echo '<p>' . __( 'Your theme supports one menu. Select which menu you would like to use.' ) . '</p>';
		} else {
			echo '<p>' . sprintf(
				/* translators: %s: Number of menus. */
				_n(
					'Your theme supports %s menu. Select which menu appears in each location.',
					'Your theme supports %s menus. Select which menu appears in each location.',
					$num_locations
				),
				number_format_i18n( $num_locations )
			) . '</p>';
		}
		?>
	<div id="menu-locations-wrap">
		<form method="post" action="<?php echo esc_url( add_query_arg( array( 'action' => 'locations' ), admin_url( 'nav-menus.php' ) ) ); ?>">
			<table class="widefat fixed" id="menu-locations-table">
				<thead>
				<tr>
					<th scope="col" class="manage-column column-locations"><?php _e( 'Theme Location' ); ?></th>
					<th scope="col" class="manage-column column-menus"><?php _e( 'Assigned Menu' ); ?></th>
				</tr>
				</thead>
				<tbody class="menu-locations">
				<?php foreach ( $locations as $_location => $_name ) { ?>
					<tr class="menu-locations-row">
						<td class="menu-location-title"><label for="locations-<?php echo $_location; ?>"><?php echo $_name; ?></label></td>
						<td class="menu-location-menus">
							<select name="menu-locations[<?php echo $_location; ?>]" id="locations-<?php echo $_location; ?>">
								<option value="0"><?php printf( '&mdash; %s &mdash;', esc_html__( 'Select a Menu' ) ); ?></option>
								<?php
								foreach ( $nav_menus as $menu ) :
									$data_orig = '';
									$selected  = isset( $menu_locations[ $_location ] ) && $menu_locations[ $_location ] === $menu->term_id;

if ( $selected ) {
										$data_orig = 'data-orig="true"';
									}
									?>
									<option <?php echo $data_orig; ?> <?php selected( $selected ); ?> value="<?php echo $menu->term_id; ?>">
										<?php echo wp_html_excerpt( $menu->name, 40, '&hellip;' ); ?>
									</option>
								<?php endforeach; ?>
							</select>
							<div class="locations-row-links">
								<?php if ( isset( $menu_locations[ $_location ] ) && 0 !== $menu_locations[ $_location ] ) : ?>
								<span class="locations-edit-menu-link">
									<?php
									printf(
										'<a href="%1$s">
											<span aria-hidden="true">%2$s</span>
											<span class="screen-reader-text">%3$s</span>
										</a>',
										esc_url(
											add_query_arg(
												array(
													'action' => 'edit',
													'menu' => $menu_locations[ $_location ],
												),
												admin_url( 'nav-menus.php' )
											)
										),
										_x( 'Edit', 'menu' ),
										/* translators: Hidden accessibility text. */
										__( 'Edit selected menu' )
									);
									?>
								</span>
								<?php endif; ?>
								<span class="locations-add-menu-link">
									<?php
									printf(
										'<a href="%1$s">%2$s</a>',
										esc_url(
											add_query_arg(
												array(
													'action' => 'edit',
													'menu' => 0,
													'use-location' => $_location,
												),
												admin_url( 'nav-menus.php' )
											)
										),
										_x( 'Use new menu', 'menu' )
									);
									?>
								</span>
							</div>
						</td>
					</tr>
				<?php } // End foreach. ?>
				</tbody>
			</table>
			<p class="button-controls wp-clearfix"><?php submit_button( __( 'Save Changes' ), 'primary left', 'nav-menu-locations', false ); ?></p>
			<?php wp_nonce_field( 'save-menu-locations' ); ?>
			<input type="hidden" name="menu" id="nav-menu-meta-object-id" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" />
		</form>
	</div>
		<?php
		/**
		 * Fires after the menu locations table is displayed.
		 *
		 * @since 3.6.0
		 */
		do_action( 'after_menu_locations_table' );
		?>
	<?php else : ?>
	<div class="manage-menus">
		<?php if ( $menu_count < 1 ) : ?>
		<span class="first-menu-message">
			<?php _e( 'Create your first menu below.' ); ?>
			<span class="screen-reader-text">
				<?php
				/* translators: Hidden accessibility text. */
				_e( 'Fill in the Menu Name and click the Create Menu button to create your first menu.' );
				?>
			</span>
		</span>
		<?php elseif ( $menu_count < 2 ) : ?>
		<span class="add-edit-menu-action">
			<?php
			printf(
				/* translators: %s: URL to create a new menu. */
				__( 'Edit your menu below, or <a href="%s">create a new menu</a>. Do not forget to save your changes!' ),
				esc_url(
					add_query_arg(
						array(
							'action' => 'edit',
							'menu'   => 0,
						),
						admin_url( 'nav-menus.php' )
					)
				)
			);
			?>
			<span class="screen-reader-text">
				<?php
				/* translators: Hidden accessibility text. */
				_e( 'Click the Save Menu button to save your changes.' );
				?>
			</span>
		</span>
		<?php else : ?>
			<form method="get" action="<?php echo esc_url( admin_url( 'nav-menus.php' ) ); ?>">
			<input type="hidden" name="action" value="edit" />
			<label for="select-menu-to-edit" class="selected-menu"><?php _e( 'Select a menu to edit:' ); ?></label>
			<select name="menu" id="select-menu-to-edit">
				<?php if ( $add_new_screen ) : ?>
					<option value="0" selected="selected"><?php _e( '&mdash; Select &mdash;' ); ?></option>
				<?php endif; ?>
				<?php foreach ( (array) $nav_menus as $_nav_menu ) : ?>
					<option value="<?php echo esc_attr( $_nav_menu->term_id ); ?>" <?php selected( $_nav_menu->term_id, $nav_menu_selected_id ); ?>>
						<?php
						echo esc_html( $_nav_menu->truncated_name );

if ( ! empty( $menu_locations ) && in_array( $_nav_menu->term_id, $menu_locations, true ) ) {
							$locations_assigned_to_this_menu = array();

foreach ( array_keys( $menu_locations, $_nav_menu->term_id, true ) as $menu_location_key ) {
								if ( isset( $locations[ $menu_location_key ] ) ) {
									$locations_assigned_to_this_menu[] = $locations[ $menu_location_key ];
								}
							}

/**
							 * Filters the number of locations listed per menu in the drop-down select.
							 *
							 * @since 3.6.0
							 *
							 * @param int $locations Number of menu locations to list. Default 3.
							 */
							$locations_listed_per_menu = absint( apply_filters( 'wp_nav_locations_listed_per_menu', 3 ) );

$assigned_locations = array_slice( $locations_assigned_to_this_menu, 0, $locations_listed_per_menu );

// Adds ellipses following the number of locations defined in $assigned_locations.
							if ( ! empty( $assigned_locations ) ) {
								printf(
									' (%1$s%2$s)',
									implode( ', ', $assigned_locations ),
									count( $locations_assigned_to_this_menu ) > count( $assigned_locations ) ? ' &hellip;' : ''
								);
							}
						}
						?>
					</option>
				<?php endforeach; ?>
			</select>
			<span class="submit-btn"><input type="submit" class="button" value="<?php esc_attr_e( 'Select' ); ?>"></span>
			<span class="add-new-menu-action">
				<?php
				printf(
					/* translators: %s: URL to create a new menu. */
					__( 'or <a href="%s">create a new menu</a>. Do not forget to save your changes!' ),
					esc_url(
						add_query_arg(
							array(
								'action' => 'edit',
								'menu'   => 0,
							),
							admin_url( 'nav-menus.php' )
						)
					)
				);
				?>
				<span class="screen-reader-text">
					<?php
					/* translators: Hidden accessibility text. */
					_e( 'Click the Save Menu button to save your changes.' );
					?>
				</span>
			</span>
		</form>
			<?php
		endif;

$metabox_holder_disabled_class = '';

if ( isset( $_GET['menu'] ) && 0 === (int) $_GET['menu'] ) {
			$metabox_holder_disabled_class = ' metabox-holder-disabled';
		}
		?>
	</div>
	<div id="nav-menus-frame" class="wp-clearfix">
	<div id="menu-settings-column" class="metabox-holder<?php echo $metabox_holder_disabled_class; ?>">

</div>
	<div id="menu-management-liquid">
		<div id="menu-management">
			<form id="update-nav-menu" method="post" enctype="multipart/form-data">
				<h2><?php _e( 'Menu structure' ); ?></h2>
				<div class="menu-edit">
					<input type="hidden" name="nav-menu-data">
					<?php
					wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false );
					wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false );
					wp_nonce_field( 'update-nav_menu', 'update-nav-menu-nonce' );

$menu_name_aria_desc = $add_new_screen ? ' aria-describedby="menu-name-desc"' : '';

if ( $one_theme_location_no_menus ) {
						$menu_name_val = 'value="' . esc_attr__( 'Menu 1' ) . '"';
						?>
						<input type="hidden" name="zero-menu-state" value="true" />
						<?php
					} else {
						$menu_name_val = 'value="' . esc_attr( $nav_menu_selected_title ) . '"';
					}
					?>
					<input type="hidden" name="action" value="update" />
					<input type="hidden" name="menu" id="menu" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" />
					<div id="nav-menu-header">
						<div class="major-publishing-actions wp-clearfix">
							<label class="menu-name-label" for="menu-name"><?php _e( 'Menu Name' ); ?></label>
							<input name="menu-name" id="menu-name" type="text" class="menu-name regular-text menu-item-textbox form-required" required="required" <?php echo $menu_name_val . $menu_name_aria_desc; ?> />
							<div class="publishing-action">
								<?php submit_button( empty( $nav_menu_selected_id ) ? __( 'Create Menu' ) : __( 'Save Menu' ), 'primary large menu-save', 'save_menu', false, array( 'id' => 'save_menu_header' ) ); ?>
							</div>
						</div>
					</div>
					<div id="post-body">
						<div id="post-body-content" class="wp-clearfix">
							<?php if ( ! $add_new_screen ) : ?>
								<?php
								$hide_style = '';

if ( isset( $menu_items ) && 0 === count( $menu_items ) ) {
									$hide_style = 'style="display: none;"';
								}

if ( $one_theme_location_no_menus ) {
									$starter_copy = __( 'Edit your default menu by adding or removing items. Drag the items into the order you prefer. Click Create Menu to save your changes.' );
								} else {
									$starter_copy = __( 'Drag the items into the order you prefer. Click the arrow on the right of the item to reveal additional configuration options.' );
								}
								?>
								<div class="drag-instructions post-body-plain" <?php echo $hide_style; ?>>
									<p><?php echo $starter_copy; ?></p>
								</div>

<?php
								if ( isset( $edit_markup ) && ! is_wp_error( $edit_markup ) ) {
									echo $edit_markup;
								} else {
									?>
									<ul class="menu" id="menu-to-edit"></ul>
								<?php } ?>

<?php endif; ?>

<?php if ( $add_new_screen ) : ?>
								<p class="post-body-plain" id="menu-name-desc"><?php _e( 'Give your menu a name, then click Create Menu.' ); ?></p>
								<?php if ( isset( $_GET['use-location'] ) ) : ?>
									<input type="hidden" name="use-location" value="<?php echo esc_attr( $_GET['use-location'] ); ?>" />
								<?php endif; ?>

<?php
							endif;

$no_menus_style = '';

if ( $one_theme_location_no_menus ) {
								$no_menus_style = 'style="display: none;"';
							}
							?>

<?php if ( ! $add_new_screen ) : ?>
								<div id="nav-menu-bulk-actions-bottom" class="bulk-actions" <?php echo $hide_style; ?>>
									<label class="bulk-select-button" for="bulk-select-switcher-bottom">
										<input type="checkbox" id="bulk-select-switcher-bottom" name="bulk-select-switcher-top" class="bulk-select-switcher">
										<span class="bulk-select-button-label"><?php _e( 'Bulk Select' ); ?></span>
									</label>
									<input type="button" class="deletion menu-items-delete disabled" value="<?php esc_attr_e( 'Remove Selected Items' ); ?>">
									<div id="pending-menu-items-to-delete">
										<p><?php _e( 'List of menu items selected for deletion:' ); ?></p>
										<ul></ul>
									</div>
								</div>
							<?php endif; ?>

<div class="menu-settings" <?php echo $no_menus_style; ?>>
								<h3><?php _e( 'Menu Settings' ); ?></h3>
								<?php
								if ( ! isset( $auto_add ) ) {
									$auto_add = get_option( 'nav_menu_options' );

if ( ! isset( $auto_add['auto_add'] ) ) {
										$auto_add = false;
									} elseif ( false !== array_search( $nav_menu_selected_id, $auto_add['auto_add'], true ) ) {
										$auto_add = true;
									} else {
										$auto_add = false;
									}
								}
								?>

<fieldset class="menu-settings-group auto-add-pages">
									<legend class="menu-settings-group-name howto"><?php _e( 'Auto add pages' ); ?></legend>
									<div class="menu-settings-input checkbox-input">
										<input type="checkbox"<?php checked( $auto_add ); ?> name="auto-add-pages" id="auto-add-pages" value="1" /> <label for="auto-add-pages"><?php printf( __( 'Automatically add new top-level pages to this menu' ), esc_url( admin_url( 'edit.php?post_type=page' ) ) ); ?></label>
									</div>
								</fieldset>

<?php if ( current_theme_supports( 'menus' ) ) : ?>

<fieldset class="menu-settings-group menu-theme-locations">
										<legend class="menu-settings-group-name howto"><?php _e( 'Display location' ); ?></legend>
										<?php
										foreach ( $locations as $location => $description ) :
											$checked = false;

if ( isset( $menu_locations[ $location ] )
												&& 0 !== $nav_menu_selected_id
												&& $menu_locations[ $location ] === $nav_menu_selected_id
											) {
													$checked = true;
											}
											?>
											<div class="menu-settings-input checkbox-input">
												<input type="checkbox"<?php checked( $checked ); ?> name="menu-locations[<?php echo esc_attr( $location ); ?>]" id="locations-<?php echo esc_attr( $location ); ?>" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" />
												<label for="locations-<?php echo esc_attr( $location ); ?>"><?php echo $description; ?></label>
												<?php if ( ! empty( $menu_locations[ $location ] ) && $menu_locations[ $location ] !== $nav_menu_selected_id ) : ?>
													<span class="theme-location-set">
													<?php
														printf(
															/* translators: %s: Menu name. */
															_x( '(Currently set to: %s)', 'menu location' ),
															wp_get_nav_menu_object( $menu_locations[ $location ] )->name
														);
													?>
													</span>
												<?php endif; ?>
											</div>
										<?php endforeach; ?>
									</fieldset>

<?php endif; ?>

</div>
						</div>
					</div>
					<div id="nav-menu-footer">
						<div class="major-publishing-actions">
							<div class="publishing-action">
								<?php submit_button( empty( $nav_menu_selected_id ) ? __( 'Create Menu' ) : __( 'Save Menu' ), 'primary large menu-save', 'save_menu', false, array( 'id' => 'save_menu_footer' ) ); ?>
							</div>
							<?php if ( $menu_count > 0 ) : ?>

<?php if ( $add_new_screen ) : ?>
								<span class="cancel-action">
									<?php
									printf(
										'<a class="submitcancel cancellation menu-cancel" href="%1$s">%2$s</a>',
										esc_url( admin_url( 'nav-menus.php' ) ),
										__( 'Cancel' )
									);
									?>
								</span>
								<?php else : ?>
								<span class="delete-action">
									<?php
									printf(
										'<a class="submitdelete deletion menu-delete" href="%1$s">%2$s</a>',
										esc_url(
											wp_nonce_url(
												add_query_arg(
													array(
														'action' => 'delete',
														'menu' => $nav_menu_selected_id,
													),
													admin_url( 'nav-menus.php' )
												),
												'delete-nav_menu-' . $nav_menu_selected_id
											)
										),
										__( 'Delete Menu' )
									);
									?>
								</span>
								<?php endif; ?>

<?php endif; ?>
						</div>
					</div>
				</div>
			</form>
		</div>
	</div>
	</div>
	<?php endif; ?>
</div>
<?php require_once ABSPATH . 'wp-admin/admin-footer.php'; ?>

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