<?php

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/**

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* Navigation Menu functions

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*

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* @package WordPress

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* @subpackage Nav_Menus

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* @since 3.0.0

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*/

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/**

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* Returns a navigation menu object.

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*

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* @since 3.0.0

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*

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* @param int|string|WP_Term $menu Menu ID, slug, name, or object.

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* @return WP_Term|false Menu object on success, false if $menu param isn't supplied or term does not exist.

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*/

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function wp_get_nav_menu_object( $menu ) {

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$menu_obj = false;

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if ( is_object( $menu ) ) {

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$menu_obj = $menu;

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}

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if ( $menu && ! $menu_obj ) {

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$menu_obj = get_term( $menu, 'nav_menu' );

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if ( ! $menu_obj ) {

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$menu_obj = get_term_by( 'slug', $menu, 'nav_menu' );

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}

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if ( ! $menu_obj ) {

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$menu_obj = get_term_by( 'name', $menu, 'nav_menu' );

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}

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}

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if ( ! $menu_obj || is_wp_error( $menu_obj ) ) {

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$menu_obj = false;

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}

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/**

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* Filters the nav_menu term retrieved for wp_get_nav_menu_object().

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*

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* @since 4.3.0

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*

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* @param WP_Term|false $menu_obj Term from nav_menu taxonomy, or false if nothing had been found.

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* @param int|string|WP_Term $menu The menu ID, slug, name, or object passed to wp_get_nav_menu_object().

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*/

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return apply_filters( 'wp_get_nav_menu_object', $menu_obj, $menu );

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}

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/**

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* Check if the given ID is a navigation menu.

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*

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* Returns true if it is; false otherwise.

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*

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* @since 3.0.0

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*

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* @param int|string|WP_Term $menu Menu ID, slug, name, or object of menu to check.

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* @return bool Whether the menu exists.

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*/

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function is_nav_menu( $menu ) {

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if ( ! $menu ) {

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return false;

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}

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$menu_obj = wp_get_nav_menu_object( $menu );

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if (

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$menu_obj &&

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! is_wp_error( $menu_obj ) &&

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! empty( $menu_obj->taxonomy ) &&

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'nav_menu' === $menu_obj->taxonomy

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) {

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return true;

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}

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return false;

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}

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/**

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* Registers navigation menu locations for a theme.

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*

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* @since 3.0.0

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*

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* @global array $_wp_registered_nav_menus

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*

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* @param array $locations Associative array of menu location identifiers (like a slug) and descriptive text.

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*/

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function register_nav_menus( $locations = array() ) {

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global $_wp_registered_nav_menus;

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add_theme_support( 'menus' );

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foreach ( $locations as $key => $value ) {

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if ( is_int( $key ) ) {

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_doing_it_wrong( __FUNCTION__, __( 'Nav menu locations must be strings.' ), '5.3.0' );

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break;

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}

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}

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$_wp_registered_nav_menus = array_merge( (array) $_wp_registered_nav_menus, $locations );

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}

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/**

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* Unregisters a navigation menu location for a theme.

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*

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* @since 3.1.0

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*

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* @global array $_wp_registered_nav_menus

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*

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* @param string $location The menu location identifier.

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* @return bool True on success, false on failure.

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*/

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function unregister_nav_menu( $location ) {

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global $_wp_registered_nav_menus;

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if ( is_array( $_wp_registered_nav_menus ) && isset( $_wp_registered_nav_menus[ $location ] ) ) {

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unset( $_wp_registered_nav_menus[ $location ] );

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if ( empty( $_wp_registered_nav_menus ) ) {

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_remove_theme_support( 'menus' );

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}

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return true;

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}

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return false;

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}

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/**

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* Registers a navigation menu location for a theme.

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*

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* @since 3.0.0

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*

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* @param string $location Menu location identifier, like a slug.

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* @param string $description Menu location descriptive text.

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*/

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function register_nav_menu( $location, $description ) {

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register_nav_menus( array( $location => $description ) );

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}

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/**

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* Retrieves all registered navigation menu locations in a theme.

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*

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* @since 3.0.0

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*

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* @global array $_wp_registered_nav_menus

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*

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* @return array Registered navigation menu locations. If none are registered, an empty array.

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*/

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function get_registered_nav_menus() {

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global $_wp_registered_nav_menus;

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if ( isset( $_wp_registered_nav_menus ) ) {

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return $_wp_registered_nav_menus;

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}

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return array();

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}

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/**

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* Retrieves all registered navigation menu locations and the menus assigned to them.

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*

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* @since 3.0.0

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*

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* @return array Registered navigation menu locations and the menus assigned them.

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* If none are registered, an empty array.

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*/

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function get_nav_menu_locations() {

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$locations = get_theme_mod( 'nav_menu_locations' );

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return ( is_array( $locations ) ) ? $locations : array();

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}

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/**

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* Determines whether a registered nav menu location has a menu assigned to it.

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*

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* @since 3.0.0

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*

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* @param string $location Menu location identifier.

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* @return bool Whether location has a menu.

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*/

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function has_nav_menu( $location ) {

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$has_nav_menu = false;

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$registered_nav_menus = get_registered_nav_menus();

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if ( isset( $registered_nav_menus[ $location ] ) ) {

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$locations = get_nav_menu_locations();

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$has_nav_menu = ! empty( $locations[ $location ] );

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}

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/**

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* Filters whether a nav menu is assigned to the specified location.

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*

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* @since 4.3.0

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*

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* @param bool $has_nav_menu Whether there is a menu assigned to a location.

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* @param string $location Menu location.

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*/

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return apply_filters( 'has_nav_menu', $has_nav_menu, $location );

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}

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/**

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* Returns the name of a navigation menu.

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*

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* @since 4.9.0

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*

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* @param string $location Menu location identifier.

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* @return string Menu name.

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*/

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function wp_get_nav_menu_name( $location ) {

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$menu_name = '';

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$locations = get_nav_menu_locations();

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if ( isset( $locations[ $location ] ) ) {

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$menu = wp_get_nav_menu_object( $locations[ $location ] );

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if ( $menu && $menu->name ) {

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$menu_name = $menu->name;

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}

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}

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/**

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* Filters the navigation menu name being returned.

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*

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* @since 4.9.0

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*

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* @param string $menu_name Menu name.

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* @param string $location Menu location identifier.

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*/

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return apply_filters( 'wp_get_nav_menu_name', $menu_name, $location );

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}

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/**

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* Determines whether the given ID is a nav menu item.

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*

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* @since 3.0.0

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*

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* @param int $menu_item_id The ID of the potential nav menu item.

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* @return bool Whether the given ID is that of a nav menu item.

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*/

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function is_nav_menu_item( $menu_item_id = 0 ) {

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return ( ! is_wp_error( $menu_item_id ) && ( 'nav_menu_item' === get_post_type( $menu_item_id ) ) );

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}

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/**

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* Creates a navigation menu.

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*

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* Note that `$menu_name` is expected to be pre-slashed.

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*

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* @since 3.0.0

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*

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* @param string $menu_name Menu name.

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* @return int|WP_Error Menu ID on success, WP_Error object on failure.

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*/

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function wp_create_nav_menu( $menu_name ) {

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// expected_slashed ($menu_name)

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return wp_update_nav_menu_object( 0, array( 'menu-name' => $menu_name ) );

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}

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/**

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* Delete a Navigation Menu.

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*

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* @since 3.0.0

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*

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* @param int|string|WP_Term $menu Menu ID, slug, name, or object.

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* @return bool|WP_Error True on success, false or WP_Error object on failure.

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*/

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function wp_delete_nav_menu( $menu ) {

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$menu = wp_get_nav_menu_object( $menu );

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if ( ! $menu ) {

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return false;

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}

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$menu_objects = get_objects_in_term( $menu->term_id, 'nav_menu' );

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if ( ! empty( $menu_objects ) ) {

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foreach ( $menu_objects as $item ) {

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wp_delete_post( $item );

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}

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}

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$result = wp_delete_term( $menu->term_id, 'nav_menu' );

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// Remove this menu from any locations.

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$locations = get_nav_menu_locations();

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foreach ( $locations as $location => $menu_id ) {

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if ( $menu_id == $menu->term_id ) {

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$locations[ $location ] = 0;

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}

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}

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set_theme_mod( 'nav_menu_locations', $locations );

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if ( $result && ! is_wp_error( $result ) ) {

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/**

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* Fires after a navigation menu has been successfully deleted.

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*

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* @since 3.0.0

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*

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* @param int $term_id ID of the deleted menu.

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*/

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do_action( 'wp_delete_nav_menu', $menu->term_id );

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}

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return $result;

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}

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/**

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* Save the properties of a menu or create a new menu with those properties.

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*

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* Note that `$menu_data` is expected to be pre-slashed.

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*

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* @since 3.0.0

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*

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* @param int $menu_id The ID of the menu or "0" to create a new menu.

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* @param array $menu_data The array of menu data.

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* @return int|WP_Error Menu ID on success, WP_Error object on failure.

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*/

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function wp_update_nav_menu_object( $menu_id = 0, $menu_data = array() ) {

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// expected_slashed ($menu_data)

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$menu_id = (int) $menu_id;

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$_menu = wp_get_nav_menu_object( $menu_id );

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$args = array(

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'description' => ( isset( $menu_data['description'] ) ? $menu_data['description'] : '' ),

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'name' => ( isset( $menu_data['menu-name'] ) ? $menu_data['menu-name'] : '' ),

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'parent' => ( isset( $menu_data['parent'] ) ? (int) $menu_data['parent'] : 0 ),

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'slug' => null,

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);

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// Double-check that we're not going to have one menu take the name of another.

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$_possible_existing = get_term_by( 'name', $menu_data['menu-name'], 'nav_menu' );

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if (

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$_possible_existing &&

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! is_wp_error( $_possible_existing ) &&

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isset( $_possible_existing->term_id ) &&

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$_possible_existing->term_id != $menu_id

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) {

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return new WP_Error(

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'menu_exists',

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sprintf(

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/* translators: %s: Menu name. */

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__( 'The menu name %s conflicts with another menu name. Please try another.' ),

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'<strong>' . esc_html( $menu_data['menu-name'] ) . '</strong>'

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)

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);

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}

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// Menu doesn't already exist, so create a new menu.

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if ( ! $_menu || is_wp_error( $_menu ) ) {

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$menu_exists = get_term_by( 'name', $menu_data['menu-name'], 'nav_menu' );

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if ( $menu_exists ) {

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return new WP_Error(

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'menu_exists',

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sprintf(

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/* translators: %s: Menu name. */

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__( 'The menu name %s conflicts with another menu name. Please try another.' ),

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'<strong>' . esc_html( $menu_data['menu-name'] ) . '</strong>'

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)

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);

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}

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$_menu = wp_insert_term( $menu_data['menu-name'], 'nav_menu', $args );

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if ( is_wp_error( $_menu ) ) {

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return $_menu;

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}

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/**

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* Fires after a navigation menu is successfully created.

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*

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* @since 3.0.0

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*

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* @param int $term_id ID of the new menu.

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* @param array $menu_data An array of menu data.

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*/

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do_action( 'wp_create_nav_menu', $_menu['term_id'], $menu_data );

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return (int) $_menu['term_id'];

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}

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if ( ! $_menu || ! isset( $_menu->term_id ) ) {

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return 0;

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}

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$menu_id = (int) $_menu->term_id;

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$update_response = wp_update_term( $menu_id, 'nav_menu', $args );

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if ( is_wp_error( $update_response ) ) {

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return $update_response;

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}

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$menu_id = (int) $update_response['term_id'];

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/**

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* Fires after a navigation menu has been successfully updated.

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*

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* @since 3.0.0

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*

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* @param int $menu_id ID of the updated menu.

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* @param array $menu_data An array of menu data.

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*/

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do_action( 'wp_update_nav_menu', $menu_id, $menu_data );

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return $menu_id;

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}

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/**

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* Save the properties of a menu item or create a new one.

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*

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* The menu-item-title, menu-item-description, and menu-item-attr-title are expected

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* to be pre-slashed since they are passed directly into `wp_insert_post()`.

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*

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* @since 3.0.0

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*

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* @param int $menu_id The ID of the menu. Required. If "0", makes the menu item a draft orphan.

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* @param int $menu_item_db_id The ID of the menu item. If "0", creates a new menu item.

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* @param array $menu_item_data The menu item's data.

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* @return int|WP_Error The menu item's database ID or WP_Error object on failure.

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*/

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function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0, $menu_item_data = array() ) {

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$menu_id = (int) $menu_id;

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$menu_item_db_id = (int) $menu_item_db_id;

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// Make sure that we don't convert non-nav_menu_item objects into nav_menu_item objects.

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if ( ! empty( $menu_item_db_id ) && ! is_nav_menu_item( $menu_item_db_id ) ) {

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return new WP_Error( 'update_nav_menu_item_failed', __( 'The given object ID is not that of a menu item.' ) );

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}

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$menu = wp_get_nav_menu_object( $menu_id );

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if ( ! $menu && 0 !== $menu_id ) {

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return new WP_Error( 'invalid_menu_id', __( 'Invalid menu ID.' ) );

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}

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if ( is_wp_error( $menu ) ) {

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return $menu;

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}

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$defaults = array(

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'menu-item-db-id' => $menu_item_db_id,

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'menu-item-object-id' => 0,

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'menu-item-object' => '',

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'menu-item-parent-id' => 0,

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'menu-item-position' => 0,

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'menu-item-type' => 'custom',

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'menu-item-title' => '',

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'menu-item-url' => '',

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'menu-item-description' => '',

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'menu-item-attr-title' => '',

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'menu-item-target' => '',

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'menu-item-classes' => '',

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'menu-item-xfn' => '',

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'menu-item-status' => '',

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'menu-item-post-date' => '',

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'menu-item-post-date-gmt' => '',

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);

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$args = wp_parse_args( $menu_item_data, $defaults );

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if ( 0 == $menu_id ) {

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$args['menu-item-position'] = 1;

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} elseif ( 0 == (int) $args['menu-item-position'] ) {

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$menu_items = 0 == $menu_id ? array() : (array) wp_get_nav_menu_items( $menu_id, array( 'post_status' => 'publish,draft' ) );

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$last_item = array_pop( $menu_items );

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$args['menu-item-position'] = ( $last_item && isset( $last_item->menu_order ) ) ? 1 + $last_item->menu_order : count( $menu_items );

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}

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$original_parent = 0 < $menu_item_db_id ? get_post_field( 'post_parent', $menu_item_db_id ) : 0;

[466] Fix | Delete

[467] Fix | Delete

if ( 'custom' === $args['menu-item-type'] ) {

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// If custom menu item, trim the URL.

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$args['menu-item-url'] = trim( $args['menu-item-url'] );

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} else {

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/*

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* If non-custom menu item, then:

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* - use the original object's URL.

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* - blank default title to sync with the original object's title.

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*/

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$args['menu-item-url'] = '';

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[479] Fix | Delete

$original_title = '';

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if ( 'taxonomy' === $args['menu-item-type'] ) {

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$original_parent = get_term_field( 'parent', $args['menu-item-object-id'], $args['menu-item-object'], 'raw' );

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$original_title = get_term_field( 'name', $args['menu-item-object-id'], $args['menu-item-object'], 'raw' );

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} elseif ( 'post_type' === $args['menu-item-type'] ) {

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$original_object = get_post( $args['menu-item-object-id'] );

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$original_parent = (int) $original_object->post_parent;

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$original_title = $original_object->post_title;

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} elseif ( 'post_type_archive' === $args['menu-item-type'] ) {

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$original_object = get_post_type_object( $args['menu-item-object'] );

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if ( $original_object ) {

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$original_title = $original_object->labels->archives;

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}

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}

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if ( wp_unslash( $args['menu-item-title'] ) === wp_specialchars_decode( $original_title ) ) {

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$args['menu-item-title'] = '';

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}

[498] Fix | Delete

[499] Fix | Delete