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<?php
/**
* Navigation Menu functions
*
* @package WordPress
* @subpackage Nav_Menus
* @since 3.0.0
*/
/**
* Returns a navigation menu object.
*
* @since 3.0.0
*
* @param int|string|WP_Term $menu Menu ID, slug, name, or object.
* @return WP_Term|false False if $menu param isn't supplied or term does not exist, menu object if successful.
*/
function wp_get_nav_menu_object( $menu ) {
$menu_obj = false;
if ( is_object( $menu ) ) {
$menu_obj = $menu;
}
if ( $menu && ! $menu_obj ) {
$menu_obj = get_term( $menu, 'nav_menu' );
if ( ! $menu_obj ) {
$menu_obj = get_term_by( 'slug', $menu, 'nav_menu' );
}
if ( ! $menu_obj ) {
$menu_obj = get_term_by( 'name', $menu, 'nav_menu' );
}
}
if ( ! $menu_obj || is_wp_error( $menu_obj ) ) {
$menu_obj = false;
}
/**
* Filters the nav_menu term retrieved for wp_get_nav_menu_object().
*
* @since 4.3.0
*
* @param WP_Term|false $menu_obj Term from nav_menu taxonomy, or false if nothing had been found.
* @param int|string|WP_Term $menu The menu ID, slug, name, or object passed to wp_get_nav_menu_object().
*/
return apply_filters( 'wp_get_nav_menu_object', $menu_obj, $menu );
}
/**
* Check if the given ID is a navigation menu.
*
* Returns true if it is; false otherwise.
*
* @since 3.0.0
*
* @param int|string|WP_Term $menu Menu ID, slug, name, or object of menu to check.
* @return bool Whether the menu exists.
*/
function is_nav_menu( $menu ) {
if ( ! $menu ) {
return false;
}
$menu_obj = wp_get_nav_menu_object( $menu );
if (
$menu_obj &&
! is_wp_error( $menu_obj ) &&
! empty( $menu_obj->taxonomy ) &&
'nav_menu' == $menu_obj->taxonomy
) {
return true;
}
return false;
}
/**
* Registers navigation menu locations for a theme.
*
* @since 3.0.0
*
* @global array $_wp_registered_nav_menus
*
* @param array $locations Associative array of menu location identifiers (like a slug) and descriptive text.
*/
function register_nav_menus( $locations = array() ) {
global $_wp_registered_nav_menus;
add_theme_support( 'menus' );
$_wp_registered_nav_menus = array_merge( (array) $_wp_registered_nav_menus, $locations );
}
/**
* Unregisters a navigation menu location for a theme.
*
* @since 3.1.0
* @global array $_wp_registered_nav_menus
*
* @param string $location The menu location identifier.
* @return bool True on success, false on failure.
*/
function unregister_nav_menu( $location ) {
global $_wp_registered_nav_menus;
if ( is_array( $_wp_registered_nav_menus ) && isset( $_wp_registered_nav_menus[ $location ] ) ) {
unset( $_wp_registered_nav_menus[ $location ] );
if ( empty( $_wp_registered_nav_menus ) ) {
_remove_theme_support( 'menus' );
}
return true;
}
return false;
}
/**
* Registers a navigation menu location for a theme.
*
* @since 3.0.0
*
* @param string $location Menu location identifier, like a slug.
* @param string $description Menu location descriptive text.
*/
function register_nav_menu( $location, $description ) {
register_nav_menus( array( $location => $description ) );
}
/**
* Retrieves all registered navigation menu locations in a theme.
*
* @since 3.0.0
*
* @global array $_wp_registered_nav_menus
*
* @return array Registered navigation menu locations. If none are registered, an empty array.
*/
function get_registered_nav_menus() {
global $_wp_registered_nav_menus;
if ( isset( $_wp_registered_nav_menus ) ) {
return $_wp_registered_nav_menus;
}
return array();
}
/**
* Retrieves all registered navigation menu locations and the menus assigned to them.
*
* @since 3.0.0
*
* @return array Registered navigation menu locations and the menus assigned them.
* If none are registered, an empty array.
*/
function get_nav_menu_locations() {
$locations = get_theme_mod( 'nav_menu_locations' );
return ( is_array( $locations ) ) ? $locations : array();
}
/**
* Determines whether a registered nav menu location has a menu assigned to it.
*
* @since 3.0.0
*
* @param string $location Menu location identifier.
* @return bool Whether location has a menu.
*/
function has_nav_menu( $location ) {
$has_nav_menu = false;
$registered_nav_menus = get_registered_nav_menus();
if ( isset( $registered_nav_menus[ $location ] ) ) {
$locations = get_nav_menu_locations();
$has_nav_menu = ! empty( $locations[ $location ] );
}
/**
* Filters whether a nav menu is assigned to the specified location.
*
* @since 4.3.0
*
* @param bool $has_nav_menu Whether there is a menu assigned to a location.
* @param string $location Menu location.
*/
return apply_filters( 'has_nav_menu', $has_nav_menu, $location );
}
/**
* Returns the name of a navigation menu.
*
* @since 4.9.0
*
* @param string $location Menu location identifier.
* @return string Menu name.
*/
function wp_get_nav_menu_name( $location ) {
$menu_name = '';
$locations = get_nav_menu_locations();
if ( isset( $locations[ $location ] ) ) {
$menu = wp_get_nav_menu_object( $locations[ $location ] );
if ( $menu && $menu->name ) {
$menu_name = $menu->name;
}
}
/**
* Filters the navigation menu name being returned.
*
* @since 4.9.0
*
* @param string $menu_name Menu name.
* @param string $location Menu location identifier.
*/
return apply_filters( 'wp_get_nav_menu_name', $menu_name, $location );
}
/**
* Determines whether the given ID is a nav menu item.
*
* @since 3.0.0
*
* @param int $menu_item_id The ID of the potential nav menu item.
* @return bool Whether the given ID is that of a nav menu item.
*/
function is_nav_menu_item( $menu_item_id = 0 ) {
return ( ! is_wp_error( $menu_item_id ) && ( 'nav_menu_item' == get_post_type( $menu_item_id ) ) );
}
/**
* Creates a navigation menu.
*
* Note that `$menu_name` is expected to be pre-slashed.
*
* @since 3.0.0
*
* @param string $menu_name Menu name.
* @return int|WP_Error Menu ID on success, WP_Error object on failure.
*/
function wp_create_nav_menu( $menu_name ) {
// expected_slashed ($menu_name)
return wp_update_nav_menu_object( 0, array( 'menu-name' => $menu_name ) );
}
/**
* Delete a Navigation Menu.
*
* @since 3.0.0
*
* @param int|string|WP_Term $menu Menu ID, slug, name, or object.
* @return bool|WP_Error True on success, false or WP_Error object on failure.
*/
function wp_delete_nav_menu( $menu ) {
$menu = wp_get_nav_menu_object( $menu );
if ( ! $menu ) {
return false;
}
$menu_objects = get_objects_in_term( $menu->term_id, 'nav_menu' );
if ( ! empty( $menu_objects ) ) {
foreach ( $menu_objects as $item ) {
wp_delete_post( $item );
}
}
$result = wp_delete_term( $menu->term_id, 'nav_menu' );
// Remove this menu from any locations.
$locations = get_nav_menu_locations();
foreach ( $locations as $location => $menu_id ) {
if ( $menu_id == $menu->term_id ) {
$locations[ $location ] = 0;
}
}
set_theme_mod( 'nav_menu_locations', $locations );
if ( $result && ! is_wp_error( $result ) ) {
/**
* Fires after a navigation menu has been successfully deleted.
*
* @since 3.0.0
*
* @param int $term_id ID of the deleted menu.
*/
do_action( 'wp_delete_nav_menu', $menu->term_id );
}
return $result;
}
/**
* Save the properties of a menu or create a new menu with those properties.
*
* Note that `$menu_data` is expected to be pre-slashed.
*
* @since 3.0.0
*
* @param int $menu_id The ID of the menu or "0" to create a new menu.
* @param array $menu_data The array of menu data.
* @return int|WP_Error Menu ID on success, WP_Error object on failure.
*/
function wp_update_nav_menu_object( $menu_id = 0, $menu_data = array() ) {
// expected_slashed ($menu_data)
$menu_id = (int) $menu_id;
$_menu = wp_get_nav_menu_object( $menu_id );
$args = array(
'description' => ( isset( $menu_data['description'] ) ? $menu_data['description'] : '' ),
'name' => ( isset( $menu_data['menu-name'] ) ? $menu_data['menu-name'] : '' ),
'parent' => ( isset( $menu_data['parent'] ) ? (int) $menu_data['parent'] : 0 ),
'slug' => null,
);
// double-check that we're not going to have one menu take the name of another
$_possible_existing = get_term_by( 'name', $menu_data['menu-name'], 'nav_menu' );
if (
$_possible_existing &&
! is_wp_error( $_possible_existing ) &&
isset( $_possible_existing->term_id ) &&
$_possible_existing->term_id != $menu_id
) {
return new WP_Error(
'menu_exists',
/* translators: %s: menu name */
sprintf(
__( 'The menu name %s conflicts with another menu name. Please try another.' ),
'<strong>' . esc_html( $menu_data['menu-name'] ) . '</strong>'
)
);
}
// menu doesn't already exist, so create a new menu
if ( ! $_menu || is_wp_error( $_menu ) ) {
$menu_exists = get_term_by( 'name', $menu_data['menu-name'], 'nav_menu' );
if ( $menu_exists ) {
return new WP_Error(
'menu_exists',
/* translators: %s: menu name */
sprintf(
__( 'The menu name %s conflicts with another menu name. Please try another.' ),
'<strong>' . esc_html( $menu_data['menu-name'] ) . '</strong>'
)
);
}
$_menu = wp_insert_term( $menu_data['menu-name'], 'nav_menu', $args );
if ( is_wp_error( $_menu ) ) {
return $_menu;
}
/**
* Fires after a navigation menu is successfully created.
*
* @since 3.0.0
*
* @param int $term_id ID of the new menu.
* @param array $menu_data An array of menu data.
*/
do_action( 'wp_create_nav_menu', $_menu['term_id'], $menu_data );
return (int) $_menu['term_id'];
}
if ( ! $_menu || ! isset( $_menu->term_id ) ) {
return 0;
}
$menu_id = (int) $_menu->term_id;
$update_response = wp_update_term( $menu_id, 'nav_menu', $args );
if ( is_wp_error( $update_response ) ) {
return $update_response;
}
$menu_id = (int) $update_response['term_id'];
/**
* Fires after a navigation menu has been successfully updated.
*
* @since 3.0.0
*
* @param int $menu_id ID of the updated menu.
* @param array $menu_data An array of menu data.
*/
do_action( 'wp_update_nav_menu', $menu_id, $menu_data );
return $menu_id;
}
/**
* Save the properties of a menu item or create a new one.
*
* The menu-item-title, menu-item-description, and menu-item-attr-title are expected
* to be pre-slashed since they are passed directly into `wp_insert_post()`.
*
* @since 3.0.0
*
* @param int $menu_id The ID of the menu. Required. If "0", makes the menu item a draft orphan.
* @param int $menu_item_db_id The ID of the menu item. If "0", creates a new menu item.
* @param array $menu_item_data The menu item's data.
* @return int|WP_Error The menu item's database ID or WP_Error object on failure.
*/
function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0, $menu_item_data = array() ) {
$menu_id = (int) $menu_id;
$menu_item_db_id = (int) $menu_item_db_id;
// make sure that we don't convert non-nav_menu_item objects into nav_menu_item objects
if ( ! empty( $menu_item_db_id ) && ! is_nav_menu_item( $menu_item_db_id ) ) {
return new WP_Error( 'update_nav_menu_item_failed', __( 'The given object ID is not that of a menu item.' ) );
}
$menu = wp_get_nav_menu_object( $menu_id );
if ( ! $menu && 0 !== $menu_id ) {
return new WP_Error( 'invalid_menu_id', __( 'Invalid menu ID.' ) );
}
if ( is_wp_error( $menu ) ) {
return $menu;
}
$defaults = array(
'menu-item-db-id' => $menu_item_db_id,
'menu-item-object-id' => 0,
'menu-item-object' => '',
'menu-item-parent-id' => 0,
'menu-item-position' => 0,
'menu-item-type' => 'custom',
'menu-item-title' => '',
'menu-item-url' => '',
'menu-item-description' => '',
'menu-item-attr-title' => '',
'menu-item-target' => '',
'menu-item-classes' => '',
'menu-item-xfn' => '',
'menu-item-status' => '',
);
$args = wp_parse_args( $menu_item_data, $defaults );
if ( 0 == $menu_id ) {
$args['menu-item-position'] = 1;
} elseif ( 0 == (int) $args['menu-item-position'] ) {
$menu_items = 0 == $menu_id ? array() : (array) wp_get_nav_menu_items( $menu_id, array( 'post_status' => 'publish,draft' ) );
$last_item = array_pop( $menu_items );
$args['menu-item-position'] = ( $last_item && isset( $last_item->menu_order ) ) ? 1 + $last_item->menu_order : count( $menu_items );
}
$original_parent = 0 < $menu_item_db_id ? get_post_field( 'post_parent', $menu_item_db_id ) : 0;
if ( 'custom' != $args['menu-item-type'] ) {
/* if non-custom menu item, then:
* use original object's URL
* blank default title to sync with original object's
*/
$args['menu-item-url'] = '';
$original_title = '';
if ( 'taxonomy' == $args['menu-item-type'] ) {
$original_parent = get_term_field( 'parent', $args['menu-item-object-id'], $args['menu-item-object'], 'raw' );
$original_title = get_term_field( 'name', $args['menu-item-object-id'], $args['menu-item-object'], 'raw' );
} elseif ( 'post_type' == $args['menu-item-type'] ) {
$original_object = get_post( $args['menu-item-object-id'] );
$original_parent = (int) $original_object->post_parent;
$original_title = $original_object->post_title;
} elseif ( 'post_type_archive' == $args['menu-item-type'] ) {
$original_object = get_post_type_object( $args['menu-item-object'] );
if ( $original_object ) {
$original_title = $original_object->labels->archives;
}
}
if ( $args['menu-item-title'] == $original_title ) {
$args['menu-item-title'] = '';
}
// hack to get wp to create a post object when too many properties are empty
if ( '' == $args['menu-item-title'] && '' == $args['menu-item-description'] ) {
$args['menu-item-description'] = ' ';
}
}
// Populate the menu item object
$post = array(
'menu_order' => $args['menu-item-position'],
'ping_status' => 0,
'post_content' => $args['menu-item-description'],
'post_excerpt' => $args['menu-item-attr-title'],
'post_parent' => $original_parent,
'post_title' => $args['menu-item-title'],
'post_type' => 'nav_menu_item',
);
$update = 0 != $menu_item_db_id;
// New menu item. Default is draft status
if ( ! $update ) {
$post['ID'] = 0;
$post['post_status'] = 'publish' == $args['menu-item-status'] ? 'publish' : 'draft';
$menu_item_db_id = wp_insert_post( $post );
if ( ! $menu_item_db_id || is_wp_error( $menu_item_db_id ) ) {
return $menu_item_db_id;
}
/**
* Fires immediately after a new navigation menu item has been added.
*
* @since 4.4.0
*
* @see wp_update_nav_menu_item()
*
* @param int $menu_id ID of the updated menu.
* @param int $menu_item_db_id ID of the new menu item.
* @param array $args An array of arguments used to update/add the menu item.
*/
do_action( 'wp_add_nav_menu_item', $menu_id, $menu_item_db_id, $args );
}
// Associate the menu item with the menu term
// Only set the menu term if it isn't set to avoid unnecessary wp_get_object_terms()
if ( $menu_id && ( ! $update || ! is_object_in_term( $menu_item_db_id, 'nav_menu', (int) $menu->term_id ) ) ) {
wp_set_object_terms( $menu_item_db_id, array( $menu->term_id ), 'nav_menu' );
}
if ( 'custom' == $args['menu-item-type'] ) {
$args['menu-item-object-id'] = $menu_item_db_id;
$args['menu-item-object'] = 'custom';
}
$menu_item_db_id = (int) $menu_item_db_id;
update_post_meta( $menu_item_db_id, '_menu_item_type', sanitize_key( $args['menu-item-type'] ) );
update_post_meta( $menu_item_db_id, '_menu_item_menu_item_parent', strval( (int) $args['menu-item-parent-id'] ) );
update_post_meta( $menu_item_db_id, '_menu_item_object_id', strval( (int) $args['menu-item-object-id'] ) );
update_post_meta( $menu_item_db_id, '_menu_item_object', sanitize_key( $args['menu-item-object'] ) );
update_post_meta( $menu_item_db_id, '_menu_item_target', sanitize_key( $args['menu-item-target'] ) );
$args['menu-item-classes'] = array_map( 'sanitize_html_class', explode( ' ', $args['menu-item-classes'] ) );
$args['menu-item-xfn'] = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['menu-item-xfn'] ) ) );
update_post_meta( $menu_item_db_id, '_menu_item_classes', $args['menu-item-classes'] );
update_post_meta( $menu_item_db_id, '_menu_item_xfn', $args['menu-item-xfn'] );
update_post_meta( $menu_item_db_id, '_menu_item_url', esc_url_raw( $args['menu-item-url'] ) );
if ( 0 == $menu_id ) {
update_post_meta( $menu_item_db_id, '_menu_item_orphaned', (string) time() );
} elseif ( get_post_meta( $menu_item_db_id, '_menu_item_orphaned' ) ) {
delete_post_meta( $menu_item_db_id, '_menu_item_orphaned' );
}
// Update existing menu item. Default is publish status
if ( $update ) {
$post['ID'] = $menu_item_db_id;
$post['post_status'] = 'draft' == $args['menu-item-status'] ? 'draft' : 'publish';
wp_update_post( $post );
}
/**
* Fires after a navigation menu item has been updated.
*
* @since 3.0.0
*
* @see wp_update_nav_menu_item()
*
* @param int $menu_id ID of the updated menu.
* @param int $menu_item_db_id ID of the updated menu item.
* @param array $args An array of arguments used to update a menu item.
*/
do_action( 'wp_update_nav_menu_item', $menu_id, $menu_item_db_id, $args );
return $menu_item_db_id;
}
/**
* Returns all navigation menu objects.
*
* @since 3.0.0
* @since 4.1.0 Default value of the 'orderby' argument was changed from 'none'
* to 'name'.
*
* @param array $args Optional. Array of arguments passed on to get_terms().
* Default empty array.
* @return array Menu objects.
*/
function wp_get_nav_menus( $args = array() ) {
$defaults = array(
'hide_empty' => false,
'orderby' => 'name',
);
$args = wp_parse_args( $args, $defaults );
/**
* Filters the navigation menu objects being returned.
*
* @since 3.0.0
*
* @see get_terms()
*
* @param array $menus An array of menu objects.
* @param array $args An array of arguments used to retrieve menu objects.
*/
return apply_filters( 'wp_get_nav_menus', get_terms( 'nav_menu', $args ), $args );
}
/**
* Return if a menu item is valid.
*
* @link https://core.trac.wordpress.org/ticket/13958
*
* @since 3.2.0
* @access private
*
* @param object $item The menu item to check.
* @return bool False if invalid, otherwise true.
*/
function _is_valid_nav_menu_item( $item ) {
return empty( $item->_invalid );
}
/**
* Retrieves all menu items of a navigation menu.
*
* Note: Most arguments passed to the `$args` parameter – save for 'output_key' – are
* specifically for retrieving nav_menu_item posts from get_posts() and may only
* indirectly affect the ultimate ordering and content of the resulting nav menu
* items that get returned from this function.
*
* @since 3.0.0
*
* @staticvar array $fetched
*
* @param int|string|WP_Term $menu Menu ID, slug, name, or object.
* @param array $args {
* Optional. Arguments to pass to get_posts().
*
* @type string $order How to order nav menu items as queried with get_posts(). Will be ignored
* if 'output' is ARRAY_A. Default 'ASC'.
* @type string $orderby Field to order menu items by as retrieved from get_posts(). Supply an orderby
* field via 'output_key' to affect the output order of nav menu items.
* Default 'menu_order'.
* @type string $post_type Menu items post type. Default 'nav_menu_item'.
* @type string $post_status Menu items post status. Default 'publish'.
* @type string $output How to order outputted menu items. Default ARRAY_A.
* @type string $output_key Key to use for ordering the actual menu items that get returned. Note that
* that is not a get_posts() argument and will only affect output of menu items
* processed in this function. Default 'menu_order'.
* @type bool $nopaging Whether to retrieve all menu items (true) or paginate (false). Default true.
* }
* @return false|array $items Array of menu items, otherwise false.
*/
function wp_get_nav_menu_items( $menu, $args = array() ) {
$menu = wp_get_nav_menu_object( $menu );
if ( ! $menu ) {
return false;
}
static $fetched = array();
$items = get_objects_in_term( $menu->term_id, 'nav_menu' );
if ( is_wp_error( $items ) ) {
return false;
}
$defaults = array(
'order' => 'ASC',
'orderby' => 'menu_order',
'post_type' => 'nav_menu_item',
'post_status' => 'publish',
'output' => ARRAY_A,
'output_key' => 'menu_order',
'nopaging' => true,
);
$args = wp_parse_args( $args, $defaults );
$args['include'] = $items;
if ( ! empty( $items ) ) {
$items = get_posts( $args );
} else {
$items = array();
}
// Get all posts and terms at once to prime the caches
if ( empty( $fetched[ $menu->term_id ] ) && ! wp_using_ext_object_cache() ) {
$fetched[ $menu->term_id ] = true;
$posts = array();
$terms = array();
foreach ( $items as $item ) {
$object_id = get_post_meta( $item->ID, '_menu_item_object_id', true );
$object = get_post_meta( $item->ID, '_menu_item_object', true );
$type = get_post_meta( $item->ID, '_menu_item_type', true );
if ( 'post_type' == $type ) {
$posts[ $object ][] = $object_id;
} elseif ( 'taxonomy' == $type ) {
$terms[ $object ][] = $object_id;
}
}
if ( ! empty( $posts ) ) {
foreach ( array_keys( $posts ) as $post_type ) {
get_posts(
array(
'post__in' => $posts[ $post_type ],
'post_type' => $post_type,
'nopaging' => true,
'update_post_term_cache' => false,
)
);
}
}
unset( $posts );
if ( ! empty( $terms ) ) {
foreach ( array_keys( $terms ) as $taxonomy ) {
get_terms(
$taxonomy,
array(
'include' => $terms[ $taxonomy ],
'hierarchical' => false,
)
);
}
}
unset( $terms );
}
$items = array_map( 'wp_setup_nav_menu_item', $items );
if ( ! is_admin() ) { // Remove invalid items only in front end
$items = array_filter( $items, '_is_valid_nav_menu_item' );
}
if ( ARRAY_A == $args['output'] ) {
$items = wp_list_sort(
$items,
array(
$args['output_key'] => 'ASC',
)
);
$i = 1;
foreach ( $items as $k => $item ) {
$items[ $k ]->{$args['output_key']} = $i++;
}
}
/**
* Filters the navigation menu items being returned.
*
* @since 3.0.0
*
* @param array $items An array of menu item post objects.
* @param object $menu The menu object.
* @param array $args An array of arguments used to retrieve menu item objects.
*/
return apply_filters( 'wp_get_nav_menu_items', $items, $menu, $args );
}
/**
* Decorates a menu item object with the shared navigation menu item properties.
*
* Properties:
* - ID: The term_id if the menu item represents a taxonomy term.
* - attr_title: The title attribute of the link element for this menu item.
* - classes: The array of class attribute values for the link element of this menu item.
* - db_id: The DB ID of this item as a nav_menu_item object, if it exists (0 if it doesn't exist).
* - description: The description of this menu item.
* - menu_item_parent: The DB ID of the nav_menu_item that is this item's menu parent, if any. 0 otherwise.
* - object: The type of object originally represented, such as "category," "post", or "attachment."
* - object_id: The DB ID of the original object this menu item represents, e.g. ID for posts and term_id for categories.
* - post_parent: The DB ID of the original object's parent object, if any (0 otherwise).
* - post_title: A "no title" label if menu item represents a post that lacks a title.
* - target: The target attribute of the link element for this menu item.
* - title: The title of this menu item.
* - type: The family of objects originally represented, such as "post_type" or "taxonomy."
* - type_label: The singular label used to describe this type of menu item.
* - url: The URL to which this menu item points.
* - xfn: The XFN relationship expressed in the link of this menu item.
* - _invalid: Whether the menu item represents an object that no longer exists.
*
* @since 3.0.0
*
* @param object $menu_item The menu item to modify.
* @return object $menu_item The menu item with standard menu item properties.
*/
function wp_setup_nav_menu_item( $menu_item ) {
if ( isset( $menu_item->post_type ) ) {
if ( 'nav_menu_item' == $menu_item->post_type ) {
$menu_item->db_id = (int) $menu_item->ID;
$menu_item->menu_item_parent = ! isset( $menu_item->menu_item_parent ) ? get_post_meta( $menu_item->ID, '_menu_item_menu_item_parent', true ) : $menu_item->menu_item_parent;
$menu_item->object_id = ! isset( $menu_item->object_id ) ? get_post_meta( $menu_item->ID, '_menu_item_object_id', true ) : $menu_item->object_id;
$menu_item->object = ! isset( $menu_item->object ) ? get_post_meta( $menu_item->ID, '_menu_item_object', true ) : $menu_item->object;
$menu_item->type = ! isset( $menu_item->type ) ? get_post_meta( $menu_item->ID, '_menu_item_type', true ) : $menu_item->type;
if ( 'post_type' == $menu_item->type ) {
$object = get_post_type_object( $menu_item->object );
if ( $object ) {
$menu_item->type_label = $object->labels->singular_name;
} else {
$menu_item->type_label = $menu_item->object;
$menu_item->_invalid = true;
}
if ( 'trash' === get_post_status( $menu_item->object_id ) ) {
$menu_item->_invalid = true;
}
$menu_item->url = get_permalink( $menu_item->object_id );
$original_object = get_post( $menu_item->object_id );
/** This filter is documented in site-inc/post-template.php */
$original_title = apply_filters( 'the_title', $original_object->post_title, $original_object->ID );
if ( '' === $original_title ) {
/* translators: %d: ID of a post */
$original_title = sprintf( __( '#%d (no title)' ), $original_object->ID );
}
$menu_item->title = '' == $menu_item->post_title ? $original_title : $menu_item->post_title;
} elseif ( 'post_type_archive' == $menu_item->type ) {
$object = get_post_type_object( $menu_item->object );
if ( $object ) {
$menu_item->title = '' == $menu_item->post_title ? $object->labels->archives : $menu_item->post_title;
$post_type_description = $object->description;
} else {
$menu_item->_invalid = true;
$post_type_description = '';
}
$menu_item->type_label = __( 'Post Type Archive' );
$post_content = wp_trim_words( $menu_item->post_content, 200 );
$post_type_description = '' == $post_content ? $post_type_description : $post_content;
$menu_item->url = get_post_type_archive_link( $menu_item->object );
} elseif ( 'taxonomy' == $menu_item->type ) {
$object = get_taxonomy( $menu_item->object );
if ( $object ) {
$menu_item->type_label = $object->labels->singular_name;
} else {
$menu_item->type_label = $menu_item->object;
$menu_item->_invalid = true;
}
$term_url = get_term_link( (int) $menu_item->object_id, $menu_item->object );
$menu_item->url = ! is_wp_error( $term_url ) ? $term_url : '';
$original_title = get_term_field( 'name', $menu_item->object_id, $menu_item->object, 'raw' );
if ( is_wp_error( $original_title ) ) {
$original_title = false;
}
$menu_item->title = '' == $menu_item->post_title ? $original_title : $menu_item->post_title;
} else {
$menu_item->type_label = __( 'Custom Link' );
$menu_item->title = $menu_item->post_title;
$menu_item->url = ! isset( $menu_item->url ) ? get_post_meta( $menu_item->ID, '_menu_item_url', true ) : $menu_item->url;
}
$menu_item->target = ! isset( $menu_item->target ) ? get_post_meta( $menu_item->ID, '_menu_item_target', true ) : $menu_item->target;
/**
* Filters a navigation menu item's title attribute.
*
* @since 3.0.0
*
* @param string $item_title The menu item title attribute.
*/
$menu_item->attr_title = ! isset( $menu_item->attr_title ) ? apply_filters( 'nav_menu_attr_title', $menu_item->post_excerpt ) : $menu_item->attr_title;
if ( ! isset( $menu_item->description ) ) {
/**
* Filters a navigation menu item's description.
*
* @since 3.0.0
*
* @param string $description The menu item description.
*/
$menu_item->description = apply_filters( 'nav_menu_description', wp_trim_words( $menu_item->post_content, 200 ) );
}
$menu_item->classes = ! isset( $menu_item->classes ) ? (array) get_post_meta( $menu_item->ID, '_menu_item_classes', true ) : $menu_item->classes;
$menu_item->xfn = ! isset( $menu_item->xfn ) ? get_post_meta( $menu_item->ID, '_menu_item_xfn', true ) : $menu_item->xfn;
} else {
$menu_item->db_id = 0;
$menu_item->menu_item_parent = 0;
$menu_item->object_id = (int) $menu_item->ID;
$menu_item->type = 'post_type';
$object = get_post_type_object( $menu_item->post_type );
$menu_item->object = $object->name;
$menu_item->type_label = $object->labels->singular_name;
if ( '' === $menu_item->post_title ) {
/* translators: %d: ID of a post */
$menu_item->post_title = sprintf( __( '#%d (no title)' ), $menu_item->ID );
}
$menu_item->title = $menu_item->post_title;
$menu_item->url = get_permalink( $menu_item->ID );
$menu_item->target = '';
/** This filter is documented in site-inc/nav-menu.php */
$menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' );
/** This filter is documented in site-inc/nav-menu.php */
$menu_item->description = apply_filters( 'nav_menu_description', '' );
$menu_item->classes = array();
$menu_item->xfn = '';
}
} elseif ( isset( $menu_item->taxonomy ) ) {
$menu_item->ID = $menu_item->term_id;
$menu_item->db_id = 0;
$menu_item->menu_item_parent = 0;
$menu_item->object_id = (int) $menu_item->term_id;
$menu_item->post_parent = (int) $menu_item->parent;
$menu_item->type = 'taxonomy';
$object = get_taxonomy( $menu_item->taxonomy );
$menu_item->object = $object->name;
$menu_item->type_label = $object->labels->singular_name;
$menu_item->title = $menu_item->name;
$menu_item->url = get_term_link( $menu_item, $menu_item->taxonomy );
$menu_item->target = '';
$menu_item->attr_title = '';
$menu_item->description = get_term_field( 'description', $menu_item->term_id, $menu_item->taxonomy );
$menu_item->classes = array();
$menu_item->xfn = '';
}
/**
* Filters a navigation menu item object.
*
* @since 3.0.0
*
* @param object $menu_item The menu item object.
*/
return apply_filters( 'wp_setup_nav_menu_item', $menu_item );
}
/**
* Get the menu items associated with a particular object.
*
* @since 3.0.0
*
* @param int $object_id The ID of the original object.
* @param string $object_type The type of object, such as "taxonomy" or "post_type."
* @param string $taxonomy If $object_type is "taxonomy", $taxonomy is the name of the tax that $object_id belongs to
* @return array The array of menu item IDs; empty array if none;
*/
function wp_get_associated_nav_menu_items( $object_id = 0, $object_type = 'post_type', $taxonomy = '' ) {
$object_id = (int) $object_id;
$menu_item_ids = array();
$query = new WP_Query;
$menu_items = $query->query(
array(
'meta_key' => '_menu_item_object_id',
'meta_value' => $object_id,
'post_status' => 'any',
'post_type' => 'nav_menu_item',
'posts_per_page' => -1,
)
);
foreach ( (array) $menu_items as $menu_item ) {
if ( isset( $menu_item->ID ) && is_nav_menu_item( $menu_item->ID ) ) {
$menu_item_type = get_post_meta( $menu_item->ID, '_menu_item_type', true );
if (
'post_type' == $object_type &&
'post_type' == $menu_item_type
) {
$menu_item_ids[] = (int) $menu_item->ID;
} elseif (
'taxonomy' == $object_type &&
'taxonomy' == $menu_item_type &&
get_post_meta( $menu_item->ID, '_menu_item_object', true ) == $taxonomy
) {
$menu_item_ids[] = (int) $menu_item->ID;
}
}
}
return array_unique( $menu_item_ids );
}
/**
* Callback for handling a menu item when its original object is deleted.
*
* @since 3.0.0
* @access private
*
* @param int $object_id The ID of the original object being trashed.
*/
function _wp_delete_post_menu_item( $object_id = 0 ) {
$object_id = (int) $object_id;
$menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'post_type' );
foreach ( (array) $menu_item_ids as $menu_item_id ) {
wp_delete_post( $menu_item_id, true );
}
}
/**
* Serves as a callback for handling a menu item when its original object is deleted.
*
* @since 3.0.0
* @access private
*
* @param int $object_id Optional. The ID of the original object being trashed. Default 0.
* @param int $tt_id Term taxonomy ID. Unused.
* @param string $taxonomy Taxonomy slug.
*/
function _wp_delete_tax_menu_item( $object_id, $tt_id, $taxonomy ) {
$object_id = (int) $object_id;
$menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'taxonomy', $taxonomy );
foreach ( (array) $menu_item_ids as $menu_item_id ) {
wp_delete_post( $menu_item_id, true );
}
}
/**
* Automatically add newly published page objects to menus with that as an option.
*
* @since 3.0.0
* @access private
*
* @param string $new_status The new status of the post object.
* @param string $old_status The old status of the post object.
* @param object $post The post object being transitioned from one status to another.
*/
function _wp_auto_add_pages_to_menu( $new_status, $old_status, $post ) {
if ( 'publish' != $new_status || 'publish' == $old_status || 'page' != $post->post_type ) {
return;
}
if ( ! empty( $post->post_parent ) ) {
return;
}
$auto_add = get_option( 'nav_menu_options' );
if ( empty( $auto_add ) || ! is_array( $auto_add ) || ! isset( $auto_add['auto_add'] ) ) {
return;
}
$auto_add = $auto_add['auto_add'];
if ( empty( $auto_add ) || ! is_array( $auto_add ) ) {
return;
}
$args = array(
'menu-item-object-id' => $post->ID,
'menu-item-object' => $post->post_type,
'menu-item-type' => 'post_type',
'menu-item-status' => 'publish',
);
foreach ( $auto_add as $menu_id ) {
$items = wp_get_nav_menu_items( $menu_id, array( 'post_status' => 'publish,draft' ) );
if ( ! is_array( $items ) ) {
continue;
}
foreach ( $items as $item ) {
if ( $post->ID == $item->object_id ) {
continue 2;
}
}
wp_update_nav_menu_item( $menu_id, 0, $args );
}
}
/**
* Delete auto-draft posts associated with the supplied changeset.
*
* @since 4.8.0
* @access private
*
* @param int $post_id Post ID for the customize_changeset.
*/
function _wp_delete_customize_changeset_dependent_auto_drafts( $post_id ) {
$post = get_post( $post_id );
if ( ! $post || 'customize_changeset' !== $post->post_type ) {
return;
}
$data = json_decode( $post->post_content, true );
if ( empty( $data['nav_menus_created_posts']['value'] ) ) {
return;
}
remove_action( 'delete_post', '_wp_delete_customize_changeset_dependent_auto_drafts' );
foreach ( $data['nav_menus_created_posts']['value'] as $stub_post_id ) {
if ( empty( $stub_post_id ) ) {
continue;
}
if ( 'auto-draft' === get_post_status( $stub_post_id ) ) {
wp_delete_post( $stub_post_id, true );
} elseif ( 'draft' === get_post_status( $stub_post_id ) ) {
wp_trash_post( $stub_post_id );
delete_post_meta( $stub_post_id, '_customize_changeset_uuid' );
}
}
add_action( 'delete_post', '_wp_delete_customize_changeset_dependent_auto_drafts' );
}
/**
* Handle menu config after theme change.
*
* @access private
* @since 4.9.0
*/
function _wp_menus_changed() {
$old_nav_menu_locations = get_option( 'theme_switch_menu_locations', array() );
$new_nav_menu_locations = get_nav_menu_locations();
$mapped_nav_menu_locations = wp_map_nav_menu_locations( $new_nav_menu_locations, $old_nav_menu_locations );
set_theme_mod( 'nav_menu_locations', $mapped_nav_menu_locations );
delete_option( 'theme_switch_menu_locations' );
}
/**
* Maps nav menu locations according to assignments in previously active theme.
*
* @since 4.9.0
*
* @param array $new_nav_menu_locations New nav menu locations assignments.
* @param array $old_nav_menu_locations Old nav menu locations assignments.
* @return array Nav menus mapped to new nav menu locations.
*/
function wp_map_nav_menu_locations( $new_nav_menu_locations, $old_nav_menu_locations ) {
$registered_nav_menus = get_registered_nav_menus();
$new_nav_menu_locations = array_intersect_key( $new_nav_menu_locations, $registered_nav_menus );
// Short-circuit if there are no old nav menu location assignments to map.
if ( empty( $old_nav_menu_locations ) ) {
return $new_nav_menu_locations;
}
// If old and new theme have just one location, map it and we're done.
if ( 1 === count( $old_nav_menu_locations ) && 1 === count( $registered_nav_menus ) ) {
$new_nav_menu_locations[ key( $registered_nav_menus ) ] = array_pop( $old_nav_menu_locations );
return $new_nav_menu_locations;
}
$old_locations = array_keys( $old_nav_menu_locations );
// Map locations with the same slug.
foreach ( $registered_nav_menus as $location => $name ) {
if ( in_array( $location, $old_locations, true ) ) {
$new_nav_menu_locations[ $location ] = $old_nav_menu_locations[ $location ];
unset( $old_nav_menu_locations[ $location ] );
}
}
// If there are no old nav menu locations left, then we're done.
if ( empty( $old_nav_menu_locations ) ) {
return $new_nav_menu_locations;
}
/*
* If old and new theme both have locations that contain phrases
* from within the same group, make an educated guess and map it.
*/
$common_slug_groups = array(
array( 'primary', 'menu-1', 'main', 'header', 'navigation', 'top' ),
array( 'secondary', 'menu-2', 'footer', 'subsidiary', 'bottom' ),
array( 'social' ),
);
// Go through each group...
foreach ( $common_slug_groups as $slug_group ) {
// ...and see if any of these slugs...
foreach ( $slug_group as $slug ) {
// ...and any of the new menu locations...
foreach ( $registered_nav_menus as $new_location => $name ) {
// ...actually match!
if ( is_string( $new_location ) && false === stripos( $new_location, $slug ) && false === stripos( $slug, $new_location ) ) {
continue;
} elseif ( is_numeric( $new_location ) && $new_location !== $slug ) {
continue;
}
// Then see if any of the old locations...
foreach ( $old_nav_menu_locations as $location => $menu_id ) {
// ...and any slug in the same group...
foreach ( $slug_group as $slug ) {
// ... have a match as well.
if ( is_string( $location ) && false === stripos( $location, $slug ) && false === stripos( $slug, $location ) ) {
continue;
} elseif ( is_numeric( $location ) && $location !== $slug ) {
continue;
}
// Make sure this location wasn't mapped and removed previously.
if ( ! empty( $old_nav_menu_locations[ $location ] ) ) {
// We have a match that can be mapped!
$new_nav_menu_locations[ $new_location ] = $old_nav_menu_locations[ $location ];
// Remove the mapped location so it can't be mapped again.
unset( $old_nav_menu_locations[ $location ] );
// Go back and check the next new menu location.
continue 3;
}
} // endforeach ( $slug_group as $slug )
} // endforeach ( $old_nav_menu_locations as $location => $menu_id )
} // endforeach foreach ( $registered_nav_menus as $new_location => $name )
} // endforeach ( $slug_group as $slug )
} // endforeach ( $common_slug_groups as $slug_group )
return $new_nav_menu_locations;
}