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home/xbodynamge/crosstraining/wp-admin/includes/nav-menu.php000060400000122745151123343500020303 0ustar00<?php
/**
 * Core Navigation Menu API
 *
 * @package WordPress
 * @subpackage Nav_Menus
 * @since 3.0.0
 */

/** Walker_Nav_Menu_Edit class */
require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-edit.php' );

/** Walker_Nav_Menu_Checklist class */
require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-checklist.php' );

/**
 * Prints the appropriate response to a menu quick search.
 *
 * @since 3.0.0
 *
 * @param array $request The unsanitized request values.
 */
function _wp_ajax_menu_quick_search( $request = array() ) {
	$args = array();
	$type = isset( $request['type'] ) ? $request['type'] : '';
	$object_type = isset( $request['object_type'] ) ? $request['object_type'] : '';
	$query = isset( $request['q'] ) ? $request['q'] : '';
	$response_format = isset( $request['response-format'] ) && in_array( $request['response-format'], array( 'json', 'markup' ) ) ? $request['response-format'] : 'json';

	if ( 'markup' == $response_format ) {
		$args['walker'] = new Walker_Nav_Menu_Checklist;
	}

	if ( 'get-post-item' == $type ) {
		if ( post_type_exists( $object_type ) ) {
			if ( isset( $request['ID'] ) ) {
				$object_id = (int) $request['ID'];
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_post( $object_id ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID' => $object_id,
							'post_title' => get_the_title( $object_id ),
							'post_type' => get_post_type( $object_id ),
						)
					);
					echo "\n";
				}
			}
		} elseif ( taxonomy_exists( $object_type ) ) {
			if ( isset( $request['ID'] ) ) {
				$object_id = (int) $request['ID'];
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_term( $object_id, $object_type ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					$post_obj = get_term( $object_id, $object_type );
					echo wp_json_encode(
						array(
							'ID' => $object_id,
							'post_title' => $post_obj->name,
							'post_type' => $object_type,
						)
					);
					echo "\n";
				}
			}

		}

	} elseif ( preg_match('/quick-search-(posttype|taxonomy)-([a-zA-Z_-]*\b)/', $type, $matches) ) {
		if ( 'posttype' == $matches[1] && get_post_type_object( $matches[2] ) ) {
			$post_type_obj = _wp_nav_menu_meta_box_object( get_post_type_object( $matches[2] ) );
			$args = array_merge(
				$args,
				array(
					'no_found_rows'          => true,
					'update_post_meta_cache' => false,
					'update_post_term_cache' => false,
					'posts_per_page'         => 10,
					'post_type'              => $matches[2],
					's'                      => $query,
				)
			);
			if ( isset( $post_type_obj->_default_query ) ) {
				$args = array_merge( $args, (array) $post_type_obj->_default_query );
			}
			$search_results_query = new WP_Query( $args );
			if ( ! $search_results_query->have_posts() ) {
				return;
			}
			while ( $search_results_query->have_posts() ) {
				$post = $search_results_query->next_post();
				if ( 'markup' == $response_format ) {
					$var_by_ref = $post->ID;
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_post( $var_by_ref ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID' => $post->ID,
							'post_title' => get_the_title( $post->ID ),
							'post_type' => $matches[2],
						)
					);
					echo "\n";
				}
			}
		} elseif ( 'taxonomy' == $matches[1] ) {
			$terms = get_terms( $matches[2], array(
				'name__like' => $query,
				'number' => 10,
			));
			if ( empty( $terms ) || is_wp_error( $terms ) )
				return;
			foreach ( (array) $terms as $term ) {
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( $term ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID' => $term->term_id,
							'post_title' => $term->name,
							'post_type' => $matches[2],
						)
					);
					echo "\n";
				}
			}
		}
	}
}

/**
 * Register nav menu meta boxes and advanced menu items.
 *
 * @since 3.0.0
 **/
function wp_nav_menu_setup() {
	// Register meta boxes
	wp_nav_menu_post_type_meta_boxes();
	add_meta_box( 'add-custom-links', __( 'Custom Links' ), 'wp_nav_menu_item_link_meta_box', 'nav-menus', 'side', 'default' );
	wp_nav_menu_taxonomy_meta_boxes();

	// Register advanced menu items (columns)
	add_filter( 'manage_nav-menus_columns', 'wp_nav_menu_manage_columns' );

	// If first time editing, disable advanced items by default.
	if ( false === get_user_option( 'managenav-menuscolumnshidden' ) ) {
		$user = wp_get_current_user();
		update_user_option($user->ID, 'managenav-menuscolumnshidden',
			array( 0 => 'link-target', 1 => 'css-classes', 2 => 'xfn', 3 => 'description', 4 => 'title-attribute', ),
			true);
	}
}

/**
 * Limit the amount of meta boxes to pages, posts, links, and categories for first time users.
 *
 * @since 3.0.0
 *
 * @global array $wp_meta_boxes
 **/
function wp_initial_nav_menu_meta_boxes() {
	global $wp_meta_boxes;

	if ( get_user_option( 'metaboxhidden_nav-menus' ) !== false || ! is_array($wp_meta_boxes) )
		return;

	$initial_meta_boxes = array( 'add-post-type-page', 'add-post-type-post', 'add-custom-links', 'add-category' );
	$hidden_meta_boxes = array();

	foreach ( array_keys($wp_meta_boxes['nav-menus']) as $context ) {
		foreach ( array_keys($wp_meta_boxes['nav-menus'][$context]) as $priority ) {
			foreach ( $wp_meta_boxes['nav-menus'][$context][$priority] as $box ) {
				if ( in_array( $box['id'], $initial_meta_boxes ) ) {
					unset( $box['id'] );
				} else {
					$hidden_meta_boxes[] = $box['id'];
				}
			}
		}
	}

	$user = wp_get_current_user();
	update_user_option( $user->ID, 'metaboxhidden_nav-menus', $hidden_meta_boxes, true );
}

/**
 * Creates meta boxes for any post type menu item..
 *
 * @since 3.0.0
 */
function wp_nav_menu_post_type_meta_boxes() {
	$post_types = get_post_types( array( 'show_in_nav_menus' => true ), 'object' );

	if ( ! $post_types )
		return;

	foreach ( $post_types as $post_type ) {
		/**
		 * Filters whether a menu items meta box will be added for the current
		 * object type.
		 *
		 * If a falsey value is returned instead of an object, the menu items
		 * meta box for the current meta box object will not be added.
		 *
		 * @since 3.0.0
		 *
		 * @param object $meta_box_object The current object to add a menu items
		 *                                meta box for.
		 */
		$post_type = apply_filters( 'nav_menu_meta_box_object', $post_type );
		if ( $post_type ) {
			$id = $post_type->name;
			// Give pages a higher priority.
			$priority = ( 'page' == $post_type->name ? 'core' : 'default' );
			add_meta_box( "add-post-type-{$id}", $post_type->labels->name, 'wp_nav_menu_item_post_type_meta_box', 'nav-menus', 'side', $priority, $post_type );
		}
	}
}

/**
 * Creates meta boxes for any taxonomy menu item.
 *
 * @since 3.0.0
 */
function wp_nav_menu_taxonomy_meta_boxes() {
	$taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'object' );

	if ( !$taxonomies )
		return;

	foreach ( $taxonomies as $tax ) {
		/** This filter is documented in wp-admin/includes/nav-menu.php */
		$tax = apply_filters( 'nav_menu_meta_box_object', $tax );
		if ( $tax ) {
			$id = $tax->name;
			add_meta_box( "add-{$id}", $tax->labels->name, 'wp_nav_menu_item_taxonomy_meta_box', 'nav-menus', 'side', 'default', $tax );
		}
	}
}

/**
 * Check whether to disable the Menu Locations meta box submit button
 *
 * @since 3.6.0
 *
 * @global bool $one_theme_location_no_menus to determine if no menus exist
 *
 * @param int|string $nav_menu_selected_id (id, name or slug) of the currently-selected menu
 * @return string Disabled attribute if at least one menu exists, false if not
 */
function wp_nav_menu_disabled_check( $nav_menu_selected_id ) {
	global $one_theme_location_no_menus;

	if ( $one_theme_location_no_menus )
		return false;

	return disabled( $nav_menu_selected_id, 0 );
}

/**
 * Displays a meta box for the custom links menu item.
 *
 * @since 3.0.0
 *
 * @global int        $_nav_menu_placeholder
 * @global int|string $nav_menu_selected_id
 */
function wp_nav_menu_item_link_meta_box() {
	global $_nav_menu_placeholder, $nav_menu_selected_id;

	$_nav_menu_placeholder = 0 > $_nav_menu_placeholder ? $_nav_menu_placeholder - 1 : -1;

	?>
	<div class="customlinkdiv" id="customlinkdiv">
		<input type="hidden" value="custom" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-type]" />
		<p id="menu-item-url-wrap" class="wp-clearfix">
			<label class="howto" for="custom-menu-item-url"><?php _e( 'URL' ); ?></label>
			<input id="custom-menu-item-url" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-url]" type="text" class="code menu-item-textbox" value="http://" />
		</p>

		<p id="menu-item-name-wrap" class="wp-clearfix">
			<label class="howto" for="custom-menu-item-name"><?php _e( 'Link Text' ); ?></label>
			<input id="custom-menu-item-name" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-title]" type="text" class="regular-text menu-item-textbox" />
		</p>

		<p class="button-controls wp-clearfix">
			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e('Add to Menu'); ?>" name="add-custom-menu-item" id="submit-customlinkdiv" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.customlinkdiv -->
	<?php
}

/**
 * Displays a meta box for a post type menu item.
 *
 * @since 3.0.0
 *
 * @global int        $_nav_menu_placeholder
 * @global int|string $nav_menu_selected_id
 *
 * @param string $object Not used.
 * @param array  $box {
 *     Post type menu item meta box arguments.
 *
 *     @type string       $id       Meta box 'id' attribute.
 *     @type string       $title    Meta box title.
 *     @type string       $callback Meta box display callback.
 *     @type WP_Post_Type $args     Extra meta box arguments (the post type object for this meta box).
 * }
 */
function wp_nav_menu_item_post_type_meta_box( $object, $box ) {
	global $_nav_menu_placeholder, $nav_menu_selected_id;

	$post_type_name = $box['args']->name;

	// Paginate browsing for large numbers of post objects.
	$per_page = 50;
	$pagenum = isset( $_REQUEST[$post_type_name . '-tab'] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
	$offset = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

	$args = array(
		'offset' => $offset,
		'order' => 'ASC',
		'orderby' => 'title',
		'posts_per_page' => $per_page,
		'post_type' => $post_type_name,
		'suppress_filters' => true,
		'update_post_term_cache' => false,
		'update_post_meta_cache' => false
	);

	if ( isset( $box['args']->_default_query ) )
		$args = array_merge($args, (array) $box['args']->_default_query );

	// @todo transient caching of these results with proper invalidation on updating of a post of this type
	$get_posts = new WP_Query;
	$posts = $get_posts->query( $args );
	if ( ! $get_posts->post_count ) {
		echo '<p>' . __( 'No items.' ) . '</p>';
		return;
	}

	$num_pages = $get_posts->max_num_pages;

	$page_links = paginate_links( array(
		'base' => add_query_arg(
			array(
				$post_type_name . '-tab' => 'all',
				'paged' => '%#%',
				'item-type' => 'post_type',
				'item-object' => $post_type_name,
			)
		),
		'format' => '',
		'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
		'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
		'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
		'total'   => $num_pages,
		'current' => $pagenum
	));

	$db_fields = false;
	if ( is_post_type_hierarchical( $post_type_name ) ) {
		$db_fields = array( 'parent' => 'post_parent', 'id' => 'ID' );
	}

	$walker = new Walker_Nav_Menu_Checklist( $db_fields );

	$current_tab = 'most-recent';
	if ( isset( $_REQUEST[$post_type_name . '-tab'] ) && in_array( $_REQUEST[$post_type_name . '-tab'], array('all', 'search') ) ) {
		$current_tab = $_REQUEST[$post_type_name . '-tab'];
	}

	if ( ! empty( $_REQUEST['quick-search-posttype-' . $post_type_name] ) ) {
		$current_tab = 'search';
	}

	$removed_args = array(
		'action',
		'customlink-tab',
		'edit-menu-item',
		'menu-item',
		'page-tab',
		'_wpnonce',
	);

	?>
	<div id="posttype-<?php echo $post_type_name; ?>" class="posttypediv">
		<ul id="posttype-<?php echo $post_type_name; ?>-tabs" class="posttype-tabs add-menu-item-tabs">
			<li <?php echo ( 'most-recent' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-most-recent" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'most-recent', remove_query_arg($removed_args))); ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent">
					<?php _e( 'Most Recent' ); ?>
				</a>
			</li>
			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="<?php echo esc_attr( $post_type_name ); ?>-all" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'all', remove_query_arg($removed_args))); ?>#<?php echo $post_type_name; ?>-all">
					<?php _e( 'View All' ); ?>
				</a>
			</li>
			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-search" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'search', remove_query_arg($removed_args))); ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
					<?php _e( 'Search'); ?>
				</a>
			</li>
		</ul><!-- .posttype-tabs -->

		<div id="tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent" class="tabs-panel <?php
			echo ( 'most-recent' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<ul id="<?php echo $post_type_name; ?>checklist-most-recent" class="categorychecklist form-no-clear">
				<?php
				$recent_args = array_merge( $args, array( 'orderby' => 'post_date', 'order' => 'DESC', 'posts_per_page' => 15 ) );
				$most_recent = $get_posts->query( $recent_args );
				$args['walker'] = $walker;

				/**
				 * Filters the posts displayed in the 'Most Recent' tab of the current
				 * post type's menu items meta box.
				 *
				 * The dynamic portion of the hook name, `$post_type_name`, refers to the post type name.
				 *
				 * @since 4.3.0
				 * @since 4.9.0 Added the `$recent_args` parameter.
				 *
				 * @param array $most_recent An array of post objects being listed.
				 * @param array $args        An array of WP_Query arguments for the meta box.
				 * @param array $box         Arguments passed to wp_nav_menu_item_post_type_meta_box().
				 * @param array $recent_args An array of WP_Query arguments for 'Most Recent' tab.
				 */
				$most_recent = apply_filters( "nav_menu_items_{$post_type_name}_recent", $most_recent, $args, $box, $recent_args );

				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $most_recent ), 0, (object) $args );
				?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div class="tabs-panel <?php
			echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>" id="tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
			<?php
			if ( isset( $_REQUEST['quick-search-posttype-' . $post_type_name] ) ) {
				$searched = esc_attr( $_REQUEST['quick-search-posttype-' . $post_type_name] );
				$search_results = get_posts( array( 's' => $searched, 'post_type' => $post_type_name, 'fields' => 'all', 'order' => 'DESC', ) );
			} else {
				$searched = '';
				$search_results = array();
			}
			?>
			<p class="quick-search-wrap">
				<label for="quick-search-posttype-<?php echo $post_type_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-posttype-<?php echo $post_type_name; ?>" id="quick-search-posttype-<?php echo $post_type_name; ?>" />
				<span class="spinner"></span>
				<?php submit_button( __( 'Search' ), 'small quick-search-submit hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-posttype-' . $post_type_name ) ); ?>
			</p>

			<ul id="<?php echo $post_type_name; ?>-search-checklist" data-wp-lists="list:<?php echo $post_type_name?>" class="categorychecklist form-no-clear">
			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $search_results), 0, (object) $args );
				?>
			<?php elseif ( is_wp_error( $search_results ) ) : ?>
				<li><?php echo $search_results->get_error_message(); ?></li>
			<?php elseif ( ! empty( $searched ) ) : ?>
				<li><?php _e('No results found.'); ?></li>
			<?php endif; ?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div id="<?php echo $post_type_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php
			echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
			<ul id="<?php echo $post_type_name; ?>checklist" data-wp-lists="list:<?php echo $post_type_name?>" class="categorychecklist form-no-clear">
				<?php
				$args['walker'] = $walker;

				/*
				 * If we're dealing with pages, let's put a checkbox for the front
				 * page at the top of the list.
				 */
				if ( 'page' == $post_type_name ) {
					$front_page = 'page' == get_option('show_on_front') ? (int) get_option( 'page_on_front' ) : 0;
					if ( ! empty( $front_page ) ) {
						$front_page_obj = get_post( $front_page );
						$front_page_obj->front_or_home = true;
						array_unshift( $posts, $front_page_obj );
					} else {
						$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval($_nav_menu_placeholder) - 1 : -1;
						array_unshift( $posts, (object) array(
							'front_or_home' => true,
							'ID' => 0,
							'object_id' => $_nav_menu_placeholder,
							'post_content' => '',
							'post_excerpt' => '',
							'post_parent' => '',
							'post_title' => _x('Home', 'nav menu home label'),
							'post_type' => 'nav_menu_item',
							'type' => 'custom',
							'url' => home_url('/'),
						) );
					}
				}

				$post_type = get_post_type_object( $post_type_name );

				if ( $post_type->has_archive ) {
					$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval($_nav_menu_placeholder) - 1 : -1;
					array_unshift( $posts, (object) array(
						'ID' => 0,
						'object_id' => $_nav_menu_placeholder,
						'object'     => $post_type_name,
						'post_content' => '',
						'post_excerpt' => '',
						'post_title' => $post_type->labels->archives,
						'post_type' => 'nav_menu_item',
						'type' => 'post_type_archive',
						'url' => get_post_type_archive_link( $post_type_name ),
					) );
				}

				/**
				 * Filters the posts displayed in the 'View All' tab of the current
				 * post type's menu items meta box.
				 *
				 * The dynamic portion of the hook name, `$post_type_name`, refers
				 * to the slug of the current post type.
				 *
				 * @since 3.2.0
				 * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
				 *
				 * @see WP_Query::query()
				 *
				 * @param array        $posts     The posts for the current post type.
				 * @param array        $args      An array of WP_Query arguments.
				 * @param WP_Post_Type $post_type The current post type object for this menu item meta box.
				 */
				$posts = apply_filters( "nav_menu_items_{$post_type_name}", $posts, $args, $post_type );

				$checkbox_items = walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $posts), 0, (object) $args );

				if ( 'all' == $current_tab && ! empty( $_REQUEST['selectall'] ) ) {
					$checkbox_items = preg_replace('/(type=(.)checkbox(\2))/', '$1 checked=$2checked$2', $checkbox_items);

				}

				echo $checkbox_items;
				?>
			</ul>
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
		</div><!-- /.tabs-panel -->

		<p class="button-controls wp-clearfix">
			<span class="list-controls">
				<a href="<?php
					echo esc_url( add_query_arg(
						array(
							$post_type_name . '-tab' => 'all',
							'selectall' => 1,
						),
						remove_query_arg( $removed_args )
					));
				?>#posttype-<?php echo $post_type_name; ?>" class="select-all aria-button-if-js"><?php _e( 'Select All' ); ?></a>
			</span>

			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-post-type-menu-item" id="<?php echo esc_attr( 'submit-posttype-' . $post_type_name ); ?>" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.posttypediv -->
	<?php
}

/**
 * Displays a meta box for a taxonomy menu item.
 *
 * @since 3.0.0
 *
 * @global int|string $nav_menu_selected_id
 *
 * @param string $object Not used.
 * @param array  $box {
 *     Taxonomy menu item meta box arguments.
 *
 *     @type string $id       Meta box 'id' attribute.
 *     @type string $title    Meta box title.
 *     @type string $callback Meta box display callback.
 *     @type object $args     Extra meta box arguments (the taxonomy object for this meta box).
 * }
 */
function wp_nav_menu_item_taxonomy_meta_box( $object, $box ) {
	global $nav_menu_selected_id;
	$taxonomy_name = $box['args']->name;
	$taxonomy = get_taxonomy( $taxonomy_name );

	// Paginate browsing for large numbers of objects.
	$per_page = 50;
	$pagenum = isset( $_REQUEST[$taxonomy_name . '-tab'] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
	$offset = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

	$args = array(
		'child_of' => 0,
		'exclude' => '',
		'hide_empty' => false,
		'hierarchical' => 1,
		'include' => '',
		'number' => $per_page,
		'offset' => $offset,
		'order' => 'ASC',
		'orderby' => 'name',
		'pad_counts' => false,
	);

	$terms = get_terms( $taxonomy_name, $args );

	if ( ! $terms || is_wp_error($terms) ) {
		echo '<p>' . __( 'No items.' ) . '</p>';
		return;
	}

	$num_pages = ceil( wp_count_terms( $taxonomy_name , array_merge( $args, array('number' => '', 'offset' => '') ) ) / $per_page );

	$page_links = paginate_links( array(
		'base' => add_query_arg(
			array(
				$taxonomy_name . '-tab' => 'all',
				'paged' => '%#%',
				'item-type' => 'taxonomy',
				'item-object' => $taxonomy_name,
			)
		),
		'format' => '',
		'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
		'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
		'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
		'total'   => $num_pages,
		'current' => $pagenum
	));

	$db_fields = false;
	if ( is_taxonomy_hierarchical( $taxonomy_name ) ) {
		$db_fields = array( 'parent' => 'parent', 'id' => 'term_id' );
	}

	$walker = new Walker_Nav_Menu_Checklist( $db_fields );

	$current_tab = 'most-used';
	if ( isset( $_REQUEST[$taxonomy_name . '-tab'] ) && in_array( $_REQUEST[$taxonomy_name . '-tab'], array('all', 'most-used', 'search') ) ) {
		$current_tab = $_REQUEST[$taxonomy_name . '-tab'];
	}

	if ( ! empty( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] ) ) {
		$current_tab = 'search';
	}

	$removed_args = array(
		'action',
		'customlink-tab',
		'edit-menu-item',
		'menu-item',
		'page-tab',
		'_wpnonce',
	);

	?>
	<div id="taxonomy-<?php echo $taxonomy_name; ?>" class="taxonomydiv">
		<ul id="taxonomy-<?php echo $taxonomy_name; ?>-tabs" class="taxonomy-tabs add-menu-item-tabs">
			<li <?php echo ( 'most-used' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-pop" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'most-used', remove_query_arg($removed_args))); ?>#tabs-panel-<?php echo $taxonomy_name; ?>-pop">
					<?php echo esc_html( $taxonomy->labels->most_used ); ?>
				</a>
			</li>
			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-all" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'all', remove_query_arg($removed_args))); ?>#tabs-panel-<?php echo $taxonomy_name; ?>-all">
					<?php _e( 'View All' ); ?>
				</a>
			</li>
			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-search-taxonomy-<?php echo esc_attr( $taxonomy_name ); ?>" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'search', remove_query_arg($removed_args))); ?>#tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
					<?php _e( 'Search' ); ?>
				</a>
			</li>
		</ul><!-- .taxonomy-tabs -->

		<div id="tabs-panel-<?php echo $taxonomy_name; ?>-pop" class="tabs-panel <?php
			echo ( 'most-used' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<ul id="<?php echo $taxonomy_name; ?>checklist-pop" class="categorychecklist form-no-clear" >
				<?php
				$popular_terms = get_terms( $taxonomy_name, array( 'orderby' => 'count', 'order' => 'DESC', 'number' => 10, 'hierarchical' => false ) );
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $popular_terms), 0, (object) $args );
				?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div id="tabs-panel-<?php echo $taxonomy_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php
			echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
			<ul id="<?php echo $taxonomy_name; ?>checklist" data-wp-lists="list:<?php echo $taxonomy_name?>" class="categorychecklist form-no-clear">
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $terms), 0, (object) $args );
				?>
			</ul>
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
		</div><!-- /.tabs-panel -->

		<div class="tabs-panel <?php
			echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>" id="tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
			<?php
			if ( isset( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] ) ) {
				$searched = esc_attr( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] );
				$search_results = get_terms( $taxonomy_name, array( 'name__like' => $searched, 'fields' => 'all', 'orderby' => 'count', 'order' => 'DESC', 'hierarchical' => false ) );
			} else {
				$searched = '';
				$search_results = array();
			}
			?>
			<p class="quick-search-wrap">
				<label for="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" id="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" />
				<span class="spinner"></span>
				<?php submit_button( __( 'Search' ), 'small quick-search-submit hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-taxonomy-' . $taxonomy_name ) ); ?>
			</p>

			<ul id="<?php echo $taxonomy_name; ?>-search-checklist" data-wp-lists="list:<?php echo $taxonomy_name?>" class="categorychecklist form-no-clear">
			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $search_results), 0, (object) $args );
				?>
			<?php elseif ( is_wp_error( $search_results ) ) : ?>
				<li><?php echo $search_results->get_error_message(); ?></li>
			<?php elseif ( ! empty( $searched ) ) : ?>
				<li><?php _e('No results found.'); ?></li>
			<?php endif; ?>
			</ul>
		</div><!-- /.tabs-panel -->

		<p class="button-controls wp-clearfix">
			<span class="list-controls">
				<a href="<?php
					echo esc_url(add_query_arg(
						array(
							$taxonomy_name . '-tab' => 'all',
							'selectall' => 1,
						),
						remove_query_arg($removed_args)
					));
				?>#taxonomy-<?php echo $taxonomy_name; ?>" class="select-all aria-button-if-js"><?php _e( 'Select All' ); ?></a>
			</span>

			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-taxonomy-menu-item" id="<?php echo esc_attr( 'submit-taxonomy-' . $taxonomy_name ); ?>" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.taxonomydiv -->
	<?php
}

/**
 * Save posted nav menu item data.
 *
 * @since 3.0.0
 *
 * @param int $menu_id The menu ID for which to save this item. $menu_id of 0 makes a draft, orphaned menu item.
 * @param array $menu_data The unsanitized posted menu item data.
 * @return array The database IDs of the items saved
 */
function wp_save_nav_menu_items( $menu_id = 0, $menu_data = array() ) {
	$menu_id = (int) $menu_id;
	$items_saved = array();

	if ( 0 == $menu_id || is_nav_menu( $menu_id ) ) {

		// Loop through all the menu items' POST values.
		foreach ( (array) $menu_data as $_possible_db_id => $_item_object_data ) {
			if (
				// Checkbox is not checked.
				empty( $_item_object_data['menu-item-object-id'] ) &&
				(
					// And item type either isn't set.
					! isset( $_item_object_data['menu-item-type'] ) ||
					// Or URL is the default.
					in_array( $_item_object_data['menu-item-url'], array( 'http://', '' ) ) ||
					! ( 'custom' == $_item_object_data['menu-item-type'] && ! isset( $_item_object_data['menu-item-db-id'] ) ) || // or it's not a custom menu item (but not the custom home page)
					// Or it *is* a custom menu item that already exists.
					! empty( $_item_object_data['menu-item-db-id'] )
				)
			) {
				// Then this potential menu item is not getting added to this menu.
				continue;
			}

			// If this possible menu item doesn't actually have a menu database ID yet.
			if (
				empty( $_item_object_data['menu-item-db-id'] ) ||
				( 0 > $_possible_db_id ) ||
				$_possible_db_id != $_item_object_data['menu-item-db-id']
			) {
				$_actual_db_id = 0;
			} else {
				$_actual_db_id = (int) $_item_object_data['menu-item-db-id'];
			}

			$args = array(
				'menu-item-db-id' => ( isset( $_item_object_data['menu-item-db-id'] ) ? $_item_object_data['menu-item-db-id'] : '' ),
				'menu-item-object-id' => ( isset( $_item_object_data['menu-item-object-id'] ) ? $_item_object_data['menu-item-object-id'] : '' ),
				'menu-item-object' => ( isset( $_item_object_data['menu-item-object'] ) ? $_item_object_data['menu-item-object'] : '' ),
				'menu-item-parent-id' => ( isset( $_item_object_data['menu-item-parent-id'] ) ? $_item_object_data['menu-item-parent-id'] : '' ),
				'menu-item-position' => ( isset( $_item_object_data['menu-item-position'] ) ? $_item_object_data['menu-item-position'] : '' ),
				'menu-item-type' => ( isset( $_item_object_data['menu-item-type'] ) ? $_item_object_data['menu-item-type'] : '' ),
				'menu-item-title' => ( isset( $_item_object_data['menu-item-title'] ) ? $_item_object_data['menu-item-title'] : '' ),
				'menu-item-url' => ( isset( $_item_object_data['menu-item-url'] ) ? $_item_object_data['menu-item-url'] : '' ),
				'menu-item-description' => ( isset( $_item_object_data['menu-item-description'] ) ? $_item_object_data['menu-item-description'] : '' ),
				'menu-item-attr-title' => ( isset( $_item_object_data['menu-item-attr-title'] ) ? $_item_object_data['menu-item-attr-title'] : '' ),
				'menu-item-target' => ( isset( $_item_object_data['menu-item-target'] ) ? $_item_object_data['menu-item-target'] : '' ),
				'menu-item-classes' => ( isset( $_item_object_data['menu-item-classes'] ) ? $_item_object_data['menu-item-classes'] : '' ),
				'menu-item-xfn' => ( isset( $_item_object_data['menu-item-xfn'] ) ? $_item_object_data['menu-item-xfn'] : '' ),
			);

			$items_saved[] = wp_update_nav_menu_item( $menu_id, $_actual_db_id, $args );

		}
	}
	return $items_saved;
}

/**
 * Adds custom arguments to some of the meta box object types.
 *
 * @since 3.0.0
 *
 * @access private
 *
 * @param object $object The post type or taxonomy meta-object.
 * @return object The post type of taxonomy object.
 */
function _wp_nav_menu_meta_box_object( $object = null ) {
	if ( isset( $object->name ) ) {

		if ( 'page' == $object->name ) {
			$object->_default_query = array(
				'orderby' => 'menu_order title',
				'post_status' => 'publish',
			);

		// Posts should show only published items.
		} elseif ( 'post' == $object->name ) {
			$object->_default_query = array(
				'post_status' => 'publish',
			);

		// Categories should be in reverse chronological order.
		} elseif ( 'category' == $object->name ) {
			$object->_default_query = array(
				'orderby' => 'id',
				'order' => 'DESC',
			);

		// Custom post types should show only published items.
		} else {
			$object->_default_query = array(
				'post_status' => 'publish',
			);
		}
	}

	return $object;
}

/**
 * Returns the menu formatted to edit.
 *
 * @since 3.0.0
 *
 * @param int $menu_id Optional. The ID of the menu to format. Default 0.
 * @return string|WP_Error $output The menu formatted to edit or error object on failure.
 */
function wp_get_nav_menu_to_edit( $menu_id = 0 ) {
	$menu = wp_get_nav_menu_object( $menu_id );

	// If the menu exists, get its items.
	if ( is_nav_menu( $menu ) ) {
		$menu_items = wp_get_nav_menu_items( $menu->term_id, array('post_status' => 'any') );
		$result = '<div id="menu-instructions" class="post-body-plain';
		$result .= ( ! empty($menu_items) ) ? ' menu-instructions-inactive">' : '">';
		$result .= '<p>' . __( 'Add menu items from the column on the left.' ) . '</p>';
		$result .= '</div>';

		if ( empty($menu_items) )
			return $result . ' <ul class="menu" id="menu-to-edit"> </ul>';

		/**
		 * Filters the Walker class used when adding nav menu items.
		 *
		 * @since 3.0.0
		 *
		 * @param string $class   The walker class to use. Default 'Walker_Nav_Menu_Edit'.
		 * @param int    $menu_id ID of the menu being rendered.
		 */
		$walker_class_name = apply_filters( 'wp_edit_nav_menu_walker', 'Walker_Nav_Menu_Edit', $menu_id );

		if ( class_exists( $walker_class_name ) ) {
			$walker = new $walker_class_name;
		} else {
			return new WP_Error( 'menu_walker_not_exist',
				/* translators: %s: walker class name */
				sprintf( __( 'The Walker class named %s does not exist.' ),
					'<strong>' . $walker_class_name . '</strong>'
				)
			);
		}

		$some_pending_menu_items = $some_invalid_menu_items = false;
		foreach ( (array) $menu_items as $menu_item ) {
			if ( isset( $menu_item->post_status ) && 'draft' == $menu_item->post_status )
				$some_pending_menu_items = true;
			if ( ! empty( $menu_item->_invalid ) )
				$some_invalid_menu_items = true;
		}

		if ( $some_pending_menu_items ) {
			$result .= '<div class="notice notice-info notice-alt inline"><p>' . __( 'Click Save Menu to make pending menu items public.' ) . '</p></div>';
		}

		if ( $some_invalid_menu_items ) {
			$result .= '<div class="notice notice-error notice-alt inline"><p>' . __( 'There are some invalid menu items. Please check or delete them.' ) . '</p></div>';
		}

		$result .= '<ul class="menu" id="menu-to-edit"> ';
		$result .= walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $menu_items), 0, (object) array('walker' => $walker ) );
		$result .= ' </ul> ';
		return $result;
	} elseif ( is_wp_error( $menu ) ) {
		return $menu;
	}

}

/**
 * Returns the columns for the nav menus page.
 *
 * @since 3.0.0
 *
 * @return array Columns.
 */
function wp_nav_menu_manage_columns() {
	return array(
		'_title'          => __( 'Show advanced menu properties' ),
		'cb'              => '<input type="checkbox" />',
		'link-target'     => __( 'Link Target' ),
		'title-attribute' => __( 'Title Attribute' ),
		'css-classes'     => __( 'CSS Classes' ),
		'xfn'             => __( 'Link Relationship (XFN)' ),
		'description'     => __( 'Description' ),
	);
}

/**
 * Deletes orphaned draft menu items
 *
 * @access private
 * @since 3.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 */
function _wp_delete_orphaned_draft_menu_items() {
	global $wpdb;
	$delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS );

	// Delete orphaned draft menu items.
	$menu_items_to_delete = $wpdb->get_col($wpdb->prepare("SELECT ID FROM $wpdb->posts AS p LEFT JOIN $wpdb->postmeta AS m ON p.ID = m.post_id WHERE post_type = 'nav_menu_item' AND post_status = 'draft' AND meta_key = '_menu_item_orphaned' AND meta_value < %d", $delete_timestamp ) );

	foreach ( (array) $menu_items_to_delete as $menu_item_id )
		wp_delete_post( $menu_item_id, true );
}

/**
 * Saves nav menu items
 *
 * @since 3.6.0
 *
 * @param int|string $nav_menu_selected_id (id, slug, or name ) of the currently-selected menu
 * @param string $nav_menu_selected_title Title of the currently-selected menu
 * @return array $messages The menu updated message
 */
function wp_nav_menu_update_menu_items ( $nav_menu_selected_id, $nav_menu_selected_title ) {
	$unsorted_menu_items = wp_get_nav_menu_items( $nav_menu_selected_id, array( 'orderby' => 'ID', 'output' => ARRAY_A, 'output_key' => 'ID', 'post_status' => 'draft,publish' ) );
	$messages = array();
	$menu_items = array();
	// Index menu items by db ID
	foreach ( $unsorted_menu_items as $_item )
		$menu_items[$_item->db_id] = $_item;

	$post_fields = array(
		'menu-item-db-id', 'menu-item-object-id', 'menu-item-object',
		'menu-item-parent-id', 'menu-item-position', 'menu-item-type',
		'menu-item-title', 'menu-item-url', 'menu-item-description',
		'menu-item-attr-title', 'menu-item-target', 'menu-item-classes', 'menu-item-xfn'
	);

	wp_defer_term_counting( true );
	// Loop through all the menu items' POST variables
	if ( ! empty( $_POST['menu-item-db-id'] ) ) {
		foreach ( (array) $_POST['menu-item-db-id'] as $_key => $k ) {

			// Menu item title can't be blank
			if ( ! isset( $_POST['menu-item-title'][ $_key ] ) || '' == $_POST['menu-item-title'][ $_key ] )
				continue;

			$args = array();
			foreach ( $post_fields as $field )
				$args[$field] = isset( $_POST[$field][$_key] ) ? $_POST[$field][$_key] : '';

			$menu_item_db_id = wp_update_nav_menu_item( $nav_menu_selected_id, ( $_POST['menu-item-db-id'][$_key] != $_key ? 0 : $_key ), $args );

			if ( is_wp_error( $menu_item_db_id ) ) {
				$messages[] = '<div id="message" class="error"><p>' . $menu_item_db_id->get_error_message() . '</p></div>';
			} else {
				unset( $menu_items[ $menu_item_db_id ] );
			}
		}
	}

	// Remove menu items from the menu that weren't in $_POST
	if ( ! empty( $menu_items ) ) {
		foreach ( array_keys( $menu_items ) as $menu_item_id ) {
			if ( is_nav_menu_item( $menu_item_id ) ) {
				wp_delete_post( $menu_item_id );
			}
		}
	}

	// Store 'auto-add' pages.
	$auto_add = ! empty( $_POST['auto-add-pages'] );
	$nav_menu_option = (array) get_option( 'nav_menu_options' );
	if ( ! isset( $nav_menu_option['auto_add'] ) )
		$nav_menu_option['auto_add'] = array();
	if ( $auto_add ) {
		if ( ! in_array( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) )
			$nav_menu_option['auto_add'][] = $nav_menu_selected_id;
	} else {
		if ( false !== ( $key = array_search( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) ) )
			unset( $nav_menu_option['auto_add'][$key] );
	}
	// Remove nonexistent/deleted menus
	$nav_menu_option['auto_add'] = array_intersect( $nav_menu_option['auto_add'], wp_get_nav_menus( array( 'fields' => 'ids' ) ) );
	update_option( 'nav_menu_options', $nav_menu_option );

	wp_defer_term_counting( false );

	/** This action is documented in wp-includes/nav-menu.php */
	do_action( 'wp_update_nav_menu', $nav_menu_selected_id );

	$messages[] = '<div id="message" class="updated notice is-dismissible"><p>' .
		/* translators: %s: nav menu title */
		sprintf( __( '%s has been updated.' ),
			'<strong>' . $nav_menu_selected_title . '</strong>'
		) . '</p></div>';

	unset( $menu_items, $unsorted_menu_items );

	return $messages;
}

/**
 * If a JSON blob of navigation menu data is in POST data, expand it and inject
 * it into `$_POST` to avoid PHP `max_input_vars` limitations. See #14134.
 *
 * @ignore
 * @since 4.5.3
 * @access private
 */
function _wp_expand_nav_menu_post_data() {
	if ( ! isset( $_POST['nav-menu-data'] ) ) {
		return;
	}

	$data = json_decode( stripslashes( $_POST['nav-menu-data'] ) );

	if ( ! is_null( $data ) && $data ) {
		foreach ( $data as $post_input_data ) {
			// For input names that are arrays (e.g. `menu-item-db-id[3][4][5]`),
			// derive the array path keys via regex and set the value in $_POST.
			preg_match( '#([^\[]*)(\[(.+)\])?#', $post_input_data->name, $matches );

			$array_bits = array( $matches[1] );

			if ( isset( $matches[3] ) ) {
				$array_bits = array_merge( $array_bits, explode( '][', $matches[3] ) );
			}

			$new_post_data = array();

			// Build the new array value from leaf to trunk.
			for ( $i = count( $array_bits ) - 1; $i >= 0; $i -- ) {
				if ( $i == count( $array_bits ) - 1 ) {
					$new_post_data[ $array_bits[ $i ] ] = wp_slash( $post_input_data->value );
				} else {
					$new_post_data = array( $array_bits[ $i ] => $new_post_data );
				}
			}

			$_POST = array_replace_recursive( $_POST, $new_post_data );
		}
	}
}
home/xbodynamge/dev/wp-includes/nav-menu.php000060400000115514151123775510015112 0ustar00<?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
 *
 * @global string $_menu_item_sort_prop
 * @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 wp-includes/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 wp-includes/nav-menu.php */
			$menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' );

			/** This filter is documented in wp-includes/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 = 0, $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;
}
home/xbodynamge/crosstraining/wp-includes/nav-menu.php000060400000115514151126550310017211 0ustar00<?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
 *
 * @global string $_menu_item_sort_prop
 * @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 wp-includes/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 wp-includes/nav-menu.php */
			$menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' );

			/** This filter is documented in wp-includes/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 = 0, $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;
}
home/xbodynamge/namtation/wp-admin/includes/nav-menu.php000060400000126432151130743640017414 0ustar00<?php
/**
 * Core Navigation Menu API
 *
 * @package WordPress
 * @subpackage Nav_Menus
 * @since 3.0.0
 */

/** Walker_Nav_Menu_Edit class */
require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-edit.php' );

/** Walker_Nav_Menu_Checklist class */
require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-checklist.php' );

/**
 * Prints the appropriate response to a menu quick search.
 *
 * @since 3.0.0
 *
 * @param array $request The unsanitized request values.
 */
function _wp_ajax_menu_quick_search( $request = array() ) {
	$args            = array();
	$type            = isset( $request['type'] ) ? $request['type'] : '';
	$object_type     = isset( $request['object_type'] ) ? $request['object_type'] : '';
	$query           = isset( $request['q'] ) ? $request['q'] : '';
	$response_format = isset( $request['response-format'] ) && in_array( $request['response-format'], array( 'json', 'markup' ) ) ? $request['response-format'] : 'json';

	if ( 'markup' == $response_format ) {
		$args['walker'] = new Walker_Nav_Menu_Checklist;
	}

	if ( 'get-post-item' == $type ) {
		if ( post_type_exists( $object_type ) ) {
			if ( isset( $request['ID'] ) ) {
				$object_id = (int) $request['ID'];
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', array( get_post( $object_id ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID'         => $object_id,
							'post_title' => get_the_title( $object_id ),
							'post_type'  => get_post_type( $object_id ),
						)
					);
					echo "\n";
				}
			}
		} elseif ( taxonomy_exists( $object_type ) ) {
			if ( isset( $request['ID'] ) ) {
				$object_id = (int) $request['ID'];
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', array( get_term( $object_id, $object_type ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					$post_obj = get_term( $object_id, $object_type );
					echo wp_json_encode(
						array(
							'ID'         => $object_id,
							'post_title' => $post_obj->name,
							'post_type'  => $object_type,
						)
					);
					echo "\n";
				}
			}
		}
	} elseif ( preg_match( '/quick-search-(posttype|taxonomy)-([a-zA-Z_-]*\b)/', $type, $matches ) ) {
		if ( 'posttype' == $matches[1] && get_post_type_object( $matches[2] ) ) {
			$post_type_obj = _wp_nav_menu_meta_box_object( get_post_type_object( $matches[2] ) );
			$args          = array_merge(
				$args,
				array(
					'no_found_rows'          => true,
					'update_post_meta_cache' => false,
					'update_post_term_cache' => false,
					'posts_per_page'         => 10,
					'post_type'              => $matches[2],
					's'                      => $query,
				)
			);
			if ( isset( $post_type_obj->_default_query ) ) {
				$args = array_merge( $args, (array) $post_type_obj->_default_query );
			}
			$search_results_query = new WP_Query( $args );
			if ( ! $search_results_query->have_posts() ) {
				return;
			}
			while ( $search_results_query->have_posts() ) {
				$post = $search_results_query->next_post();
				if ( 'markup' == $response_format ) {
					$var_by_ref = $post->ID;
					echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', array( get_post( $var_by_ref ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID'         => $post->ID,
							'post_title' => get_the_title( $post->ID ),
							'post_type'  => $matches[2],
						)
					);
					echo "\n";
				}
			}
		} elseif ( 'taxonomy' == $matches[1] ) {
			$terms = get_terms(
				array(
					'taxonomy'   => $matches[2],
					'name__like' => $query,
					'number'     => 10,
				)
			);
			if ( empty( $terms ) || is_wp_error( $terms ) ) {
				return;
			}
			foreach ( (array) $terms as $term ) {
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', array( $term ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID'         => $term->term_id,
							'post_title' => $term->name,
							'post_type'  => $matches[2],
						)
					);
					echo "\n";
				}
			}
		}
	}
}

/**
 * Register nav menu meta boxes and advanced menu items.
 *
 * @since 3.0.0
 */
function wp_nav_menu_setup() {
	// Register meta boxes
	wp_nav_menu_post_type_meta_boxes();
	add_meta_box( 'add-custom-links', __( 'Custom Links' ), 'wp_nav_menu_item_link_meta_box', 'nav-menus', 'side', 'default' );
	wp_nav_menu_taxonomy_meta_boxes();

	// Register advanced menu items (columns)
	add_filter( 'manage_nav-menus_columns', 'wp_nav_menu_manage_columns' );

	// If first time editing, disable advanced items by default.
	if ( false === get_user_option( 'managenav-menuscolumnshidden' ) ) {
		$user = wp_get_current_user();
		update_user_option(
			$user->ID,
			'managenav-menuscolumnshidden',
			array(
				0 => 'link-target',
				1 => 'css-classes',
				2 => 'xfn',
				3 => 'description',
				4 => 'title-attribute',
			),
			true
		);
	}
}

/**
 * Limit the amount of meta boxes to pages, posts, links, and categories for first time users.
 *
 * @since 3.0.0
 *
 * @global array $wp_meta_boxes
 */
function wp_initial_nav_menu_meta_boxes() {
	global $wp_meta_boxes;

	if ( get_user_option( 'metaboxhidden_nav-menus' ) !== false || ! is_array( $wp_meta_boxes ) ) {
		return;
	}

	$initial_meta_boxes = array( 'add-post-type-page', 'add-post-type-post', 'add-custom-links', 'add-category' );
	$hidden_meta_boxes  = array();

	foreach ( array_keys( $wp_meta_boxes['nav-menus'] ) as $context ) {
		foreach ( array_keys( $wp_meta_boxes['nav-menus'][ $context ] ) as $priority ) {
			foreach ( $wp_meta_boxes['nav-menus'][ $context ][ $priority ] as $box ) {
				if ( in_array( $box['id'], $initial_meta_boxes ) ) {
					unset( $box['id'] );
				} else {
					$hidden_meta_boxes[] = $box['id'];
				}
			}
		}
	}

	$user = wp_get_current_user();
	update_user_option( $user->ID, 'metaboxhidden_nav-menus', $hidden_meta_boxes, true );
}

/**
 * Creates meta boxes for any post type menu item..
 *
 * @since 3.0.0
 */
function wp_nav_menu_post_type_meta_boxes() {
	$post_types = get_post_types( array( 'show_in_nav_menus' => true ), 'object' );

	if ( ! $post_types ) {
		return;
	}

	foreach ( $post_types as $post_type ) {
		/**
		 * Filters whether a menu items meta box will be added for the current
		 * object type.
		 *
		 * If a falsey value is returned instead of an object, the menu items
		 * meta box for the current meta box object will not be added.
		 *
		 * @since 3.0.0
		 *
		 * @param object $meta_box_object The current object to add a menu items
		 *                                meta box for.
		 */
		$post_type = apply_filters( 'nav_menu_meta_box_object', $post_type );
		if ( $post_type ) {
			$id = $post_type->name;
			// Give pages a higher priority.
			$priority = ( 'page' == $post_type->name ? 'core' : 'default' );
			add_meta_box( "add-post-type-{$id}", $post_type->labels->name, 'wp_nav_menu_item_post_type_meta_box', 'nav-menus', 'side', $priority, $post_type );
		}
	}
}

/**
 * Creates meta boxes for any taxonomy menu item.
 *
 * @since 3.0.0
 */
function wp_nav_menu_taxonomy_meta_boxes() {
	$taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'object' );

	if ( ! $taxonomies ) {
		return;
	}

	foreach ( $taxonomies as $tax ) {
		/** This filter is documented in wp-admin/includes/nav-menu.php */
		$tax = apply_filters( 'nav_menu_meta_box_object', $tax );
		if ( $tax ) {
			$id = $tax->name;
			add_meta_box( "add-{$id}", $tax->labels->name, 'wp_nav_menu_item_taxonomy_meta_box', 'nav-menus', 'side', 'default', $tax );
		}
	}
}

/**
 * Check whether to disable the Menu Locations meta box submit button
 *
 * @since 3.6.0
 *
 * @global bool $one_theme_location_no_menus to determine if no menus exist
 *
 * @param int|string $nav_menu_selected_id (id, name or slug) of the currently-selected menu
 * @return string Disabled attribute if at least one menu exists, false if not
 */
function wp_nav_menu_disabled_check( $nav_menu_selected_id ) {
	global $one_theme_location_no_menus;

	if ( $one_theme_location_no_menus ) {
		return false;
	}

	return disabled( $nav_menu_selected_id, 0 );
}

/**
 * Displays a meta box for the custom links menu item.
 *
 * @since 3.0.0
 *
 * @global int        $_nav_menu_placeholder
 * @global int|string $nav_menu_selected_id
 */
function wp_nav_menu_item_link_meta_box() {
	global $_nav_menu_placeholder, $nav_menu_selected_id;

	$_nav_menu_placeholder = 0 > $_nav_menu_placeholder ? $_nav_menu_placeholder - 1 : -1;

	?>
	<div class="customlinkdiv" id="customlinkdiv">
		<input type="hidden" value="custom" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-type]" />
		<p id="menu-item-url-wrap" class="wp-clearfix">
			<label class="howto" for="custom-menu-item-url"><?php _e( 'URL' ); ?></label>
			<input id="custom-menu-item-url" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-url]" type="text" class="code menu-item-textbox" value="http://" />
		</p>

		<p id="menu-item-name-wrap" class="wp-clearfix">
			<label class="howto" for="custom-menu-item-name"><?php _e( 'Link Text' ); ?></label>
			<input id="custom-menu-item-name" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-title]" type="text" class="regular-text menu-item-textbox" />
		</p>

		<p class="button-controls wp-clearfix">
			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-custom-menu-item" id="submit-customlinkdiv" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.customlinkdiv -->
	<?php
}

/**
 * Displays a meta box for a post type menu item.
 *
 * @since 3.0.0
 *
 * @global int        $_nav_menu_placeholder
 * @global int|string $nav_menu_selected_id
 *
 * @param string $object Not used.
 * @param array  $box {
 *     Post type menu item meta box arguments.
 *
 *     @type string       $id       Meta box 'id' attribute.
 *     @type string       $title    Meta box title.
 *     @type string       $callback Meta box display callback.
 *     @type WP_Post_Type $args     Extra meta box arguments (the post type object for this meta box).
 * }
 */
function wp_nav_menu_item_post_type_meta_box( $object, $box ) {
	global $_nav_menu_placeholder, $nav_menu_selected_id;

	$post_type_name = $box['args']->name;

	// Paginate browsing for large numbers of post objects.
	$per_page = 50;
	$pagenum  = isset( $_REQUEST[ $post_type_name . '-tab' ] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
	$offset   = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

	$args = array(
		'offset'                 => $offset,
		'order'                  => 'ASC',
		'orderby'                => 'title',
		'posts_per_page'         => $per_page,
		'post_type'              => $post_type_name,
		'suppress_filters'       => true,
		'update_post_term_cache' => false,
		'update_post_meta_cache' => false,
	);

	if ( isset( $box['args']->_default_query ) ) {
		$args = array_merge( $args, (array) $box['args']->_default_query );
	}

	// @todo transient caching of these results with proper invalidation on updating of a post of this type
	$get_posts = new WP_Query;
	$posts     = $get_posts->query( $args );
	if ( ! $get_posts->post_count ) {
		echo '<p>' . __( 'No items.' ) . '</p>';
		return;
	}

	$num_pages = $get_posts->max_num_pages;

	$page_links = paginate_links(
		array(
			'base'               => add_query_arg(
				array(
					$post_type_name . '-tab' => 'all',
					'paged'                  => '%#%',
					'item-type'              => 'post_type',
					'item-object'            => $post_type_name,
				)
			),
			'format'             => '',
			'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
			'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
			'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
			'total'              => $num_pages,
			'current'            => $pagenum,
		)
	);

	$db_fields = false;
	if ( is_post_type_hierarchical( $post_type_name ) ) {
		$db_fields = array(
			'parent' => 'post_parent',
			'id'     => 'ID',
		);
	}

	$walker = new Walker_Nav_Menu_Checklist( $db_fields );

	$current_tab = 'most-recent';
	if ( isset( $_REQUEST[ $post_type_name . '-tab' ] ) && in_array( $_REQUEST[ $post_type_name . '-tab' ], array( 'all', 'search' ) ) ) {
		$current_tab = $_REQUEST[ $post_type_name . '-tab' ];
	}

	if ( ! empty( $_REQUEST[ 'quick-search-posttype-' . $post_type_name ] ) ) {
		$current_tab = 'search';
	}

	$removed_args = array(
		'action',
		'customlink-tab',
		'edit-menu-item',
		'menu-item',
		'page-tab',
		'_wpnonce',
	);

	$most_recent_url = $view_all_url = $search_url = '';
	if ( $nav_menu_selected_id ) {
		$most_recent_url = esc_url( add_query_arg( $post_type_name . '-tab', 'most-recent', remove_query_arg( $removed_args ) ) );
		$view_all_url    = esc_url( add_query_arg( $post_type_name . '-tab', 'all', remove_query_arg( $removed_args ) ) );
		$search_url      = esc_url( add_query_arg( $post_type_name . '-tab', 'search', remove_query_arg( $removed_args ) ) );
	}
	?>
	<div id="posttype-<?php echo $post_type_name; ?>" class="posttypediv">
		<ul id="posttype-<?php echo $post_type_name; ?>-tabs" class="posttype-tabs add-menu-item-tabs">
			<li <?php echo ( 'most-recent' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-most-recent" href="<?php echo $most_recent_url; ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent">
					<?php _e( 'Most Recent' ); ?>
				</a>
			</li>
			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="<?php echo esc_attr( $post_type_name ); ?>-all" href="<?php echo $view_all_url; ?>#<?php echo $post_type_name; ?>-all">
					<?php _e( 'View All' ); ?>
				</a>
			</li>
			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-search" href="<?php echo $search_url; ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
					<?php _e( 'Search' ); ?>
				</a>
			</li>
		</ul><!-- .posttype-tabs -->

		<div id="tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent" class="tabs-panel <?php echo ( 'most-recent' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>">
			<ul id="<?php echo $post_type_name; ?>checklist-most-recent" class="categorychecklist form-no-clear">
				<?php
				$recent_args    = array_merge(
					$args,
					array(
						'orderby'        => 'post_date',
						'order'          => 'DESC',
						'posts_per_page' => 15,
					)
				);
				$most_recent    = $get_posts->query( $recent_args );
				$args['walker'] = $walker;

				/**
				 * Filters the posts displayed in the 'Most Recent' tab of the current
				 * post type's menu items meta box.
				 *
				 * The dynamic portion of the hook name, `$post_type_name`, refers to the post type name.
				 *
				 * @since 4.3.0
				 * @since 4.9.0 Added the `$recent_args` parameter.
				 *
				 * @param WP_Post[] $most_recent An array of post objects being listed.
				 * @param array     $args        An array of `WP_Query` arguments for the meta box.
				 * @param array     $box         Arguments passed to `wp_nav_menu_item_post_type_meta_box()`.
				 * @param array     $recent_args An array of `WP_Query` arguments for 'Most Recent' tab.
				 */
				$most_recent = apply_filters( "nav_menu_items_{$post_type_name}_recent", $most_recent, $args, $box, $recent_args );

				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $most_recent ), 0, (object) $args );
				?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div class="tabs-panel <?php echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>" id="tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
			<?php
			if ( isset( $_REQUEST[ 'quick-search-posttype-' . $post_type_name ] ) ) {
				$searched       = esc_attr( $_REQUEST[ 'quick-search-posttype-' . $post_type_name ] );
				$search_results = get_posts(
					array(
						's'         => $searched,
						'post_type' => $post_type_name,
						'fields'    => 'all',
						'order'     => 'DESC',
					)
				);
			} else {
				$searched       = '';
				$search_results = array();
			}
			?>
			<p class="quick-search-wrap">
				<label for="quick-search-posttype-<?php echo $post_type_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-posttype-<?php echo $post_type_name; ?>" id="quick-search-posttype-<?php echo $post_type_name; ?>" />
				<span class="spinner"></span>
				<?php submit_button( __( 'Search' ), 'small quick-search-submit hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-posttype-' . $post_type_name ) ); ?>
			</p>

			<ul id="<?php echo $post_type_name; ?>-search-checklist" data-wp-lists="list:<?php echo $post_type_name; ?>" class="categorychecklist form-no-clear">
			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $search_results ), 0, (object) $args );
				?>
			<?php elseif ( is_wp_error( $search_results ) ) : ?>
				<li><?php echo $search_results->get_error_message(); ?></li>
			<?php elseif ( ! empty( $searched ) ) : ?>
				<li><?php _e( 'No results found.' ); ?></li>
			<?php endif; ?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div id="<?php echo $post_type_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>">
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
			<ul id="<?php echo $post_type_name; ?>checklist" data-wp-lists="list:<?php echo $post_type_name; ?>" class="categorychecklist form-no-clear">
				<?php
				$args['walker'] = $walker;

				/*
				 * If we're dealing with pages, let's put a checkbox for the front
				 * page at the top of the list.
				 */
				if ( 'page' == $post_type_name ) {
					$front_page = 'page' == get_option( 'show_on_front' ) ? (int) get_option( 'page_on_front' ) : 0;
					if ( ! empty( $front_page ) ) {
						$front_page_obj                = get_post( $front_page );
						$front_page_obj->front_or_home = true;
						array_unshift( $posts, $front_page_obj );
					} else {
						$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval( $_nav_menu_placeholder ) - 1 : -1;
						array_unshift(
							$posts,
							(object) array(
								'front_or_home' => true,
								'ID'            => 0,
								'object_id'     => $_nav_menu_placeholder,
								'post_content'  => '',
								'post_excerpt'  => '',
								'post_parent'   => '',
								'post_title'    => _x( 'Home', 'nav menu home label' ),
								'post_type'     => 'nav_menu_item',
								'type'          => 'custom',
								'url'           => home_url( '/' ),
							)
						);
					}
				}

				$post_type = get_post_type_object( $post_type_name );

				if ( $post_type->has_archive ) {
					$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval( $_nav_menu_placeholder ) - 1 : -1;
					array_unshift(
						$posts,
						(object) array(
							'ID'           => 0,
							'object_id'    => $_nav_menu_placeholder,
							'object'       => $post_type_name,
							'post_content' => '',
							'post_excerpt' => '',
							'post_title'   => $post_type->labels->archives,
							'post_type'    => 'nav_menu_item',
							'type'         => 'post_type_archive',
							'url'          => get_post_type_archive_link( $post_type_name ),
						)
					);
				}

				/**
				 * Filters the posts displayed in the 'View All' tab of the current
				 * post type's menu items meta box.
				 *
				 * The dynamic portion of the hook name, `$post_type_name`, refers
				 * to the slug of the current post type.
				 *
				 * @since 3.2.0
				 * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
				 *
				 * @see WP_Query::query()
				 *
				 * @param object[]     $posts     The posts for the current post type. Mostly `WP_Post` objects, but
				 *                                can also contain "fake" post objects to represent other menu items.
				 * @param array        $args      An array of `WP_Query` arguments.
				 * @param WP_Post_Type $post_type The current post type object for this menu item meta box.
				 */
				$posts = apply_filters( "nav_menu_items_{$post_type_name}", $posts, $args, $post_type );

				$checkbox_items = walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $posts ), 0, (object) $args );

				if ( 'all' == $current_tab && ! empty( $_REQUEST['selectall'] ) ) {
					$checkbox_items = preg_replace( '/(type=(.)checkbox(\2))/', '$1 checked=$2checked$2', $checkbox_items );

				}

				echo $checkbox_items;
				?>
			</ul>
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
		</div><!-- /.tabs-panel -->

		<p class="button-controls wp-clearfix">
			<span class="list-controls">
				<a href="
				<?php
					echo esc_url(
						add_query_arg(
							array(
								$post_type_name . '-tab' => 'all',
								'selectall'              => 1,
							),
							remove_query_arg( $removed_args )
						)
					);
				?>
				#posttype-<?php echo $post_type_name; ?>" class="select-all aria-button-if-js"><?php _e( 'Select All' ); ?></a>
			</span>

			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-post-type-menu-item" id="<?php echo esc_attr( 'submit-posttype-' . $post_type_name ); ?>" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.posttypediv -->
	<?php
}

/**
 * Displays a meta box for a taxonomy menu item.
 *
 * @since 3.0.0
 *
 * @global int|string $nav_menu_selected_id
 *
 * @param string $object Not used.
 * @param array  $box {
 *     Taxonomy menu item meta box arguments.
 *
 *     @type string $id       Meta box 'id' attribute.
 *     @type string $title    Meta box title.
 *     @type string $callback Meta box display callback.
 *     @type object $args     Extra meta box arguments (the taxonomy object for this meta box).
 * }
 */
function wp_nav_menu_item_taxonomy_meta_box( $object, $box ) {
	global $nav_menu_selected_id;
	$taxonomy_name = $box['args']->name;
	$taxonomy      = get_taxonomy( $taxonomy_name );

	// Paginate browsing for large numbers of objects.
	$per_page = 50;
	$pagenum  = isset( $_REQUEST[ $taxonomy_name . '-tab' ] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
	$offset   = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

	$args = array(
		'child_of'     => 0,
		'exclude'      => '',
		'hide_empty'   => false,
		'hierarchical' => 1,
		'include'      => '',
		'number'       => $per_page,
		'offset'       => $offset,
		'order'        => 'ASC',
		'orderby'      => 'name',
		'pad_counts'   => false,
	);

	$terms = get_terms( $taxonomy_name, $args );

	if ( ! $terms || is_wp_error( $terms ) ) {
		echo '<p>' . __( 'No items.' ) . '</p>';
		return;
	}

	$num_pages = ceil(
		wp_count_terms(
			$taxonomy_name,
			array_merge(
				$args,
				array(
					'number' => '',
					'offset' => '',
				)
			)
		) / $per_page
	);

	$page_links = paginate_links(
		array(
			'base'               => add_query_arg(
				array(
					$taxonomy_name . '-tab' => 'all',
					'paged'                 => '%#%',
					'item-type'             => 'taxonomy',
					'item-object'           => $taxonomy_name,
				)
			),
			'format'             => '',
			'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
			'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
			'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
			'total'              => $num_pages,
			'current'            => $pagenum,
		)
	);

	$db_fields = false;
	if ( is_taxonomy_hierarchical( $taxonomy_name ) ) {
		$db_fields = array(
			'parent' => 'parent',
			'id'     => 'term_id',
		);
	}

	$walker = new Walker_Nav_Menu_Checklist( $db_fields );

	$current_tab = 'most-used';
	if ( isset( $_REQUEST[ $taxonomy_name . '-tab' ] ) && in_array( $_REQUEST[ $taxonomy_name . '-tab' ], array( 'all', 'most-used', 'search' ) ) ) {
		$current_tab = $_REQUEST[ $taxonomy_name . '-tab' ];
	}

	if ( ! empty( $_REQUEST[ 'quick-search-taxonomy-' . $taxonomy_name ] ) ) {
		$current_tab = 'search';
	}

	$removed_args = array(
		'action',
		'customlink-tab',
		'edit-menu-item',
		'menu-item',
		'page-tab',
		'_wpnonce',
	);

	$most_used_url = $view_all_url = $search_url = '';
	if ( $nav_menu_selected_id ) {
		$most_used_url = esc_url( add_query_arg( $taxonomy_name . '-tab', 'most-used', remove_query_arg( $removed_args ) ) );
		$view_all_url  = esc_url( add_query_arg( $taxonomy_name . '-tab', 'all', remove_query_arg( $removed_args ) ) );
		$search_url    = esc_url( add_query_arg( $taxonomy_name . '-tab', 'search', remove_query_arg( $removed_args ) ) );
	}
	?>
	<div id="taxonomy-<?php echo $taxonomy_name; ?>" class="taxonomydiv">
		<ul id="taxonomy-<?php echo $taxonomy_name; ?>-tabs" class="taxonomy-tabs add-menu-item-tabs">
			<li <?php echo ( 'most-used' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-pop" href="<?php echo $most_used_url; ?>#tabs-panel-<?php echo $taxonomy_name; ?>-pop">
					<?php echo esc_html( $taxonomy->labels->most_used ); ?>
				</a>
			</li>
			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-all" href="<?php echo $view_all_url; ?>#tabs-panel-<?php echo $taxonomy_name; ?>-all">
					<?php _e( 'View All' ); ?>
				</a>
			</li>
			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-search-taxonomy-<?php echo esc_attr( $taxonomy_name ); ?>" href="<?php echo $search_url; ?>#tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
					<?php _e( 'Search' ); ?>
				</a>
			</li>
		</ul><!-- .taxonomy-tabs -->

		<div id="tabs-panel-<?php echo $taxonomy_name; ?>-pop" class="tabs-panel <?php echo ( 'most-used' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?> ">
			<ul id="<?php echo $taxonomy_name; ?>checklist-pop" class="categorychecklist form-no-clear" >
				<?php
				$popular_terms  = get_terms(
					$taxonomy_name,
					array(
						'orderby'      => 'count',
						'order'        => 'DESC',
						'number'       => 10,
						'hierarchical' => false,
					)
				);
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $popular_terms ), 0, (object) $args );
				?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div id="tabs-panel-<?php echo $taxonomy_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?> ">
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
			<ul id="<?php echo $taxonomy_name; ?>checklist" data-wp-lists="list:<?php echo $taxonomy_name; ?>" class="categorychecklist form-no-clear">
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $terms ), 0, (object) $args );
				?>
			</ul>
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
		</div><!-- /.tabs-panel -->

		<div class="tabs-panel <?php echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>" id="tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
			<?php
			if ( isset( $_REQUEST[ 'quick-search-taxonomy-' . $taxonomy_name ] ) ) {
				$searched       = esc_attr( $_REQUEST[ 'quick-search-taxonomy-' . $taxonomy_name ] );
				$search_results = get_terms(
					$taxonomy_name,
					array(
						'name__like'   => $searched,
						'fields'       => 'all',
						'orderby'      => 'count',
						'order'        => 'DESC',
						'hierarchical' => false,
					)
				);
			} else {
				$searched       = '';
				$search_results = array();
			}
			?>
			<p class="quick-search-wrap">
				<label for="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" id="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" />
				<span class="spinner"></span>
				<?php submit_button( __( 'Search' ), 'small quick-search-submit hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-taxonomy-' . $taxonomy_name ) ); ?>
			</p>

			<ul id="<?php echo $taxonomy_name; ?>-search-checklist" data-wp-lists="list:<?php echo $taxonomy_name; ?>" class="categorychecklist form-no-clear">
			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $search_results ), 0, (object) $args );
				?>
			<?php elseif ( is_wp_error( $search_results ) ) : ?>
				<li><?php echo $search_results->get_error_message(); ?></li>
			<?php elseif ( ! empty( $searched ) ) : ?>
				<li><?php _e( 'No results found.' ); ?></li>
			<?php endif; ?>
			</ul>
		</div><!-- /.tabs-panel -->

		<p class="button-controls wp-clearfix">
			<span class="list-controls">
				<a href="
				<?php
					echo esc_url(
						add_query_arg(
							array(
								$taxonomy_name . '-tab' => 'all',
								'selectall'             => 1,
							),
							remove_query_arg( $removed_args )
						)
					);
				?>
				#taxonomy-<?php echo $taxonomy_name; ?>" class="select-all aria-button-if-js"><?php _e( 'Select All' ); ?></a>
			</span>

			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-taxonomy-menu-item" id="<?php echo esc_attr( 'submit-taxonomy-' . $taxonomy_name ); ?>" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.taxonomydiv -->
	<?php
}

/**
 * Save posted nav menu item data.
 *
 * @since 3.0.0
 *
 * @param int     $menu_id   The menu ID for which to save this item. Value of 0 makes a draft, orphaned menu item. Default 0.
 * @param array[] $menu_data The unsanitized POSTed menu item data.
 * @return int[] The database IDs of the items saved
 */
function wp_save_nav_menu_items( $menu_id = 0, $menu_data = array() ) {
	$menu_id     = (int) $menu_id;
	$items_saved = array();

	if ( 0 == $menu_id || is_nav_menu( $menu_id ) ) {

		// Loop through all the menu items' POST values.
		foreach ( (array) $menu_data as $_possible_db_id => $_item_object_data ) {
			if (
				// Checkbox is not checked.
				empty( $_item_object_data['menu-item-object-id'] ) &&
				(
					// And item type either isn't set.
					! isset( $_item_object_data['menu-item-type'] ) ||
					// Or URL is the default.
					in_array( $_item_object_data['menu-item-url'], array( 'http://', '' ) ) ||
					! ( 'custom' == $_item_object_data['menu-item-type'] && ! isset( $_item_object_data['menu-item-db-id'] ) ) || // or it's not a custom menu item (but not the custom home page)
					// Or it *is* a custom menu item that already exists.
					! empty( $_item_object_data['menu-item-db-id'] )
				)
			) {
				// Then this potential menu item is not getting added to this menu.
				continue;
			}

			// If this possible menu item doesn't actually have a menu database ID yet.
			if (
				empty( $_item_object_data['menu-item-db-id'] ) ||
				( 0 > $_possible_db_id ) ||
				$_possible_db_id != $_item_object_data['menu-item-db-id']
			) {
				$_actual_db_id = 0;
			} else {
				$_actual_db_id = (int) $_item_object_data['menu-item-db-id'];
			}

			$args = array(
				'menu-item-db-id'       => ( isset( $_item_object_data['menu-item-db-id'] ) ? $_item_object_data['menu-item-db-id'] : '' ),
				'menu-item-object-id'   => ( isset( $_item_object_data['menu-item-object-id'] ) ? $_item_object_data['menu-item-object-id'] : '' ),
				'menu-item-object'      => ( isset( $_item_object_data['menu-item-object'] ) ? $_item_object_data['menu-item-object'] : '' ),
				'menu-item-parent-id'   => ( isset( $_item_object_data['menu-item-parent-id'] ) ? $_item_object_data['menu-item-parent-id'] : '' ),
				'menu-item-position'    => ( isset( $_item_object_data['menu-item-position'] ) ? $_item_object_data['menu-item-position'] : '' ),
				'menu-item-type'        => ( isset( $_item_object_data['menu-item-type'] ) ? $_item_object_data['menu-item-type'] : '' ),
				'menu-item-title'       => ( isset( $_item_object_data['menu-item-title'] ) ? $_item_object_data['menu-item-title'] : '' ),
				'menu-item-url'         => ( isset( $_item_object_data['menu-item-url'] ) ? $_item_object_data['menu-item-url'] : '' ),
				'menu-item-description' => ( isset( $_item_object_data['menu-item-description'] ) ? $_item_object_data['menu-item-description'] : '' ),
				'menu-item-attr-title'  => ( isset( $_item_object_data['menu-item-attr-title'] ) ? $_item_object_data['menu-item-attr-title'] : '' ),
				'menu-item-target'      => ( isset( $_item_object_data['menu-item-target'] ) ? $_item_object_data['menu-item-target'] : '' ),
				'menu-item-classes'     => ( isset( $_item_object_data['menu-item-classes'] ) ? $_item_object_data['menu-item-classes'] : '' ),
				'menu-item-xfn'         => ( isset( $_item_object_data['menu-item-xfn'] ) ? $_item_object_data['menu-item-xfn'] : '' ),
			);

			$items_saved[] = wp_update_nav_menu_item( $menu_id, $_actual_db_id, $args );

		}
	}
	return $items_saved;
}

/**
 * Adds custom arguments to some of the meta box object types.
 *
 * @since 3.0.0
 *
 * @access private
 *
 * @param object $object The post type or taxonomy meta-object.
 * @return object The post type of taxonomy object.
 */
function _wp_nav_menu_meta_box_object( $object = null ) {
	if ( isset( $object->name ) ) {

		if ( 'page' == $object->name ) {
			$object->_default_query = array(
				'orderby'     => 'menu_order title',
				'post_status' => 'publish',
			);

			// Posts should show only published items.
		} elseif ( 'post' == $object->name ) {
			$object->_default_query = array(
				'post_status' => 'publish',
			);

			// Categories should be in reverse chronological order.
		} elseif ( 'category' == $object->name ) {
			$object->_default_query = array(
				'orderby' => 'id',
				'order'   => 'DESC',
			);

			// Custom post types should show only published items.
		} else {
			$object->_default_query = array(
				'post_status' => 'publish',
			);
		}
	}

	return $object;
}

/**
 * Returns the menu formatted to edit.
 *
 * @since 3.0.0
 *
 * @param int $menu_id Optional. The ID of the menu to format. Default 0.
 * @return string|WP_Error $output The menu formatted to edit or error object on failure.
 */
function wp_get_nav_menu_to_edit( $menu_id = 0 ) {
	$menu = wp_get_nav_menu_object( $menu_id );

	// If the menu exists, get its items.
	if ( is_nav_menu( $menu ) ) {
		$menu_items = wp_get_nav_menu_items( $menu->term_id, array( 'post_status' => 'any' ) );
		$result     = '<div id="menu-instructions" class="post-body-plain';
		$result    .= ( ! empty( $menu_items ) ) ? ' menu-instructions-inactive">' : '">';
		$result    .= '<p>' . __( 'Add menu items from the column on the left.' ) . '</p>';
		$result    .= '</div>';

		if ( empty( $menu_items ) ) {
			return $result . ' <ul class="menu" id="menu-to-edit"> </ul>';
		}

		/**
		 * Filters the Walker class used when adding nav menu items.
		 *
		 * @since 3.0.0
		 *
		 * @param string $class   The walker class to use. Default 'Walker_Nav_Menu_Edit'.
		 * @param int    $menu_id ID of the menu being rendered.
		 */
		$walker_class_name = apply_filters( 'wp_edit_nav_menu_walker', 'Walker_Nav_Menu_Edit', $menu_id );

		if ( class_exists( $walker_class_name ) ) {
			$walker = new $walker_class_name;
		} else {
			return new WP_Error(
				'menu_walker_not_exist',
				/* translators: %s: walker class name */
				sprintf(
					__( 'The Walker class named %s does not exist.' ),
					'<strong>' . $walker_class_name . '</strong>'
				)
			);
		}

		$some_pending_menu_items = $some_invalid_menu_items = false;
		foreach ( (array) $menu_items as $menu_item ) {
			if ( isset( $menu_item->post_status ) && 'draft' == $menu_item->post_status ) {
				$some_pending_menu_items = true;
			}
			if ( ! empty( $menu_item->_invalid ) ) {
				$some_invalid_menu_items = true;
			}
		}

		if ( $some_pending_menu_items ) {
			$result .= '<div class="notice notice-info notice-alt inline"><p>' . __( 'Click Save Menu to make pending menu items public.' ) . '</p></div>';
		}

		if ( $some_invalid_menu_items ) {
			$result .= '<div class="notice notice-error notice-alt inline"><p>' . __( 'There are some invalid menu items. Please check or delete them.' ) . '</p></div>';
		}

		$result .= '<ul class="menu" id="menu-to-edit"> ';
		$result .= walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $menu_items ), 0, (object) array( 'walker' => $walker ) );
		$result .= ' </ul> ';
		return $result;
	} elseif ( is_wp_error( $menu ) ) {
		return $menu;
	}

}

/**
 * Returns the columns for the nav menus page.
 *
 * @since 3.0.0
 *
 * @return array Columns.
 */
function wp_nav_menu_manage_columns() {
	return array(
		'_title'          => __( 'Show advanced menu properties' ),
		'cb'              => '<input type="checkbox" />',
		'link-target'     => __( 'Link Target' ),
		'title-attribute' => __( 'Title Attribute' ),
		'css-classes'     => __( 'CSS Classes' ),
		'xfn'             => __( 'Link Relationship (XFN)' ),
		'description'     => __( 'Description' ),
	);
}

/**
 * Deletes orphaned draft menu items
 *
 * @access private
 * @since 3.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 */
function _wp_delete_orphaned_draft_menu_items() {
	global $wpdb;
	$delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS );

	// Delete orphaned draft menu items.
	$menu_items_to_delete = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts AS p LEFT JOIN $wpdb->postmeta AS m ON p.ID = m.post_id WHERE post_type = 'nav_menu_item' AND post_status = 'draft' AND meta_key = '_menu_item_orphaned' AND meta_value < %d", $delete_timestamp ) );

	foreach ( (array) $menu_items_to_delete as $menu_item_id ) {
		wp_delete_post( $menu_item_id, true );
	}
}

/**
 * Saves nav menu items
 *
 * @since 3.6.0
 *
 * @param int|string $nav_menu_selected_id (id, slug, or name ) of the currently-selected menu
 * @param string $nav_menu_selected_title Title of the currently-selected menu
 * @return array $messages The menu updated message
 */
function wp_nav_menu_update_menu_items( $nav_menu_selected_id, $nav_menu_selected_title ) {
	$unsorted_menu_items = wp_get_nav_menu_items(
		$nav_menu_selected_id,
		array(
			'orderby'     => 'ID',
			'output'      => ARRAY_A,
			'output_key'  => 'ID',
			'post_status' => 'draft,publish',
		)
	);
	$messages            = array();
	$menu_items          = array();
	// Index menu items by db ID
	foreach ( $unsorted_menu_items as $_item ) {
		$menu_items[ $_item->db_id ] = $_item;
	}

	$post_fields = array(
		'menu-item-db-id',
		'menu-item-object-id',
		'menu-item-object',
		'menu-item-parent-id',
		'menu-item-position',
		'menu-item-type',
		'menu-item-title',
		'menu-item-url',
		'menu-item-description',
		'menu-item-attr-title',
		'menu-item-target',
		'menu-item-classes',
		'menu-item-xfn',
	);

	wp_defer_term_counting( true );
	// Loop through all the menu items' POST variables
	if ( ! empty( $_POST['menu-item-db-id'] ) ) {
		foreach ( (array) $_POST['menu-item-db-id'] as $_key => $k ) {

			// Menu item title can't be blank
			if ( ! isset( $_POST['menu-item-title'][ $_key ] ) || '' == $_POST['menu-item-title'][ $_key ] ) {
				continue;
			}

			$args = array();
			foreach ( $post_fields as $field ) {
				$args[ $field ] = isset( $_POST[ $field ][ $_key ] ) ? $_POST[ $field ][ $_key ] : '';
			}

			$menu_item_db_id = wp_update_nav_menu_item( $nav_menu_selected_id, ( $_POST['menu-item-db-id'][ $_key ] != $_key ? 0 : $_key ), $args );

			if ( is_wp_error( $menu_item_db_id ) ) {
				$messages[] = '<div id="message" class="error"><p>' . $menu_item_db_id->get_error_message() . '</p></div>';
			} else {
				unset( $menu_items[ $menu_item_db_id ] );
			}
		}
	}

	// Remove menu items from the menu that weren't in $_POST
	if ( ! empty( $menu_items ) ) {
		foreach ( array_keys( $menu_items ) as $menu_item_id ) {
			if ( is_nav_menu_item( $menu_item_id ) ) {
				wp_delete_post( $menu_item_id );
			}
		}
	}

	// Store 'auto-add' pages.
	$auto_add        = ! empty( $_POST['auto-add-pages'] );
	$nav_menu_option = (array) get_option( 'nav_menu_options' );
	if ( ! isset( $nav_menu_option['auto_add'] ) ) {
		$nav_menu_option['auto_add'] = array();
	}
	if ( $auto_add ) {
		if ( ! in_array( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) ) {
			$nav_menu_option['auto_add'][] = $nav_menu_selected_id;
		}
	} else {
		if ( false !== ( $key = array_search( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) ) ) {
			unset( $nav_menu_option['auto_add'][ $key ] );
		}
	}
	// Remove nonexistent/deleted menus
	$nav_menu_option['auto_add'] = array_intersect( $nav_menu_option['auto_add'], wp_get_nav_menus( array( 'fields' => 'ids' ) ) );
	update_option( 'nav_menu_options', $nav_menu_option );

	wp_defer_term_counting( false );

	/** This action is documented in wp-includes/nav-menu.php */
	do_action( 'wp_update_nav_menu', $nav_menu_selected_id );

	$messages[] = '<div id="message" class="updated notice is-dismissible"><p>' .
		/* translators: %s: nav menu title */
		sprintf(
			__( '%s has been updated.' ),
			'<strong>' . $nav_menu_selected_title . '</strong>'
		) . '</p></div>';

	unset( $menu_items, $unsorted_menu_items );

	return $messages;
}

/**
 * If a JSON blob of navigation menu data is in POST data, expand it and inject
 * it into `$_POST` to avoid PHP `max_input_vars` limitations. See #14134.
 *
 * @ignore
 * @since 4.5.3
 * @access private
 */
function _wp_expand_nav_menu_post_data() {
	if ( ! isset( $_POST['nav-menu-data'] ) ) {
		return;
	}

	$data = json_decode( stripslashes( $_POST['nav-menu-data'] ) );

	if ( ! is_null( $data ) && $data ) {
		foreach ( $data as $post_input_data ) {
			// For input names that are arrays (e.g. `menu-item-db-id[3][4][5]`),
			// derive the array path keys via regex and set the value in $_POST.
			preg_match( '#([^\[]*)(\[(.+)\])?#', $post_input_data->name, $matches );

			$array_bits = array( $matches[1] );

			if ( isset( $matches[3] ) ) {
				$array_bits = array_merge( $array_bits, explode( '][', $matches[3] ) );
			}

			$new_post_data = array();

			// Build the new array value from leaf to trunk.
			for ( $i = count( $array_bits ) - 1; $i >= 0; $i -- ) {
				if ( $i == count( $array_bits ) - 1 ) {
					$new_post_data[ $array_bits[ $i ] ] = wp_slash( $post_input_data->value );
				} else {
					$new_post_data = array( $array_bits[ $i ] => $new_post_data );
				}
			}

			$_POST = array_replace_recursive( $_POST, $new_post_data );
		}
	}
}
home/xbodynamge/www/wp-admin/includes/nav-menu.php000060400000122745151132007650016245 0ustar00<?php
/**
 * Core Navigation Menu API
 *
 * @package WordPress
 * @subpackage Nav_Menus
 * @since 3.0.0
 */

/** Walker_Nav_Menu_Edit class */
require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-edit.php' );

/** Walker_Nav_Menu_Checklist class */
require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-checklist.php' );

/**
 * Prints the appropriate response to a menu quick search.
 *
 * @since 3.0.0
 *
 * @param array $request The unsanitized request values.
 */
function _wp_ajax_menu_quick_search( $request = array() ) {
	$args = array();
	$type = isset( $request['type'] ) ? $request['type'] : '';
	$object_type = isset( $request['object_type'] ) ? $request['object_type'] : '';
	$query = isset( $request['q'] ) ? $request['q'] : '';
	$response_format = isset( $request['response-format'] ) && in_array( $request['response-format'], array( 'json', 'markup' ) ) ? $request['response-format'] : 'json';

	if ( 'markup' == $response_format ) {
		$args['walker'] = new Walker_Nav_Menu_Checklist;
	}

	if ( 'get-post-item' == $type ) {
		if ( post_type_exists( $object_type ) ) {
			if ( isset( $request['ID'] ) ) {
				$object_id = (int) $request['ID'];
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_post( $object_id ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID' => $object_id,
							'post_title' => get_the_title( $object_id ),
							'post_type' => get_post_type( $object_id ),
						)
					);
					echo "\n";
				}
			}
		} elseif ( taxonomy_exists( $object_type ) ) {
			if ( isset( $request['ID'] ) ) {
				$object_id = (int) $request['ID'];
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_term( $object_id, $object_type ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					$post_obj = get_term( $object_id, $object_type );
					echo wp_json_encode(
						array(
							'ID' => $object_id,
							'post_title' => $post_obj->name,
							'post_type' => $object_type,
						)
					);
					echo "\n";
				}
			}

		}

	} elseif ( preg_match('/quick-search-(posttype|taxonomy)-([a-zA-Z_-]*\b)/', $type, $matches) ) {
		if ( 'posttype' == $matches[1] && get_post_type_object( $matches[2] ) ) {
			$post_type_obj = _wp_nav_menu_meta_box_object( get_post_type_object( $matches[2] ) );
			$args = array_merge(
				$args,
				array(
					'no_found_rows'          => true,
					'update_post_meta_cache' => false,
					'update_post_term_cache' => false,
					'posts_per_page'         => 10,
					'post_type'              => $matches[2],
					's'                      => $query,
				)
			);
			if ( isset( $post_type_obj->_default_query ) ) {
				$args = array_merge( $args, (array) $post_type_obj->_default_query );
			}
			$search_results_query = new WP_Query( $args );
			if ( ! $search_results_query->have_posts() ) {
				return;
			}
			while ( $search_results_query->have_posts() ) {
				$post = $search_results_query->next_post();
				if ( 'markup' == $response_format ) {
					$var_by_ref = $post->ID;
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_post( $var_by_ref ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID' => $post->ID,
							'post_title' => get_the_title( $post->ID ),
							'post_type' => $matches[2],
						)
					);
					echo "\n";
				}
			}
		} elseif ( 'taxonomy' == $matches[1] ) {
			$terms = get_terms( $matches[2], array(
				'name__like' => $query,
				'number' => 10,
			));
			if ( empty( $terms ) || is_wp_error( $terms ) )
				return;
			foreach ( (array) $terms as $term ) {
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( $term ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID' => $term->term_id,
							'post_title' => $term->name,
							'post_type' => $matches[2],
						)
					);
					echo "\n";
				}
			}
		}
	}
}

/**
 * Register nav menu meta boxes and advanced menu items.
 *
 * @since 3.0.0
 **/
function wp_nav_menu_setup() {
	// Register meta boxes
	wp_nav_menu_post_type_meta_boxes();
	add_meta_box( 'add-custom-links', __( 'Custom Links' ), 'wp_nav_menu_item_link_meta_box', 'nav-menus', 'side', 'default' );
	wp_nav_menu_taxonomy_meta_boxes();

	// Register advanced menu items (columns)
	add_filter( 'manage_nav-menus_columns', 'wp_nav_menu_manage_columns' );

	// If first time editing, disable advanced items by default.
	if ( false === get_user_option( 'managenav-menuscolumnshidden' ) ) {
		$user = wp_get_current_user();
		update_user_option($user->ID, 'managenav-menuscolumnshidden',
			array( 0 => 'link-target', 1 => 'css-classes', 2 => 'xfn', 3 => 'description', 4 => 'title-attribute', ),
			true);
	}
}

/**
 * Limit the amount of meta boxes to pages, posts, links, and categories for first time users.
 *
 * @since 3.0.0
 *
 * @global array $wp_meta_boxes
 **/
function wp_initial_nav_menu_meta_boxes() {
	global $wp_meta_boxes;

	if ( get_user_option( 'metaboxhidden_nav-menus' ) !== false || ! is_array($wp_meta_boxes) )
		return;

	$initial_meta_boxes = array( 'add-post-type-page', 'add-post-type-post', 'add-custom-links', 'add-category' );
	$hidden_meta_boxes = array();

	foreach ( array_keys($wp_meta_boxes['nav-menus']) as $context ) {
		foreach ( array_keys($wp_meta_boxes['nav-menus'][$context]) as $priority ) {
			foreach ( $wp_meta_boxes['nav-menus'][$context][$priority] as $box ) {
				if ( in_array( $box['id'], $initial_meta_boxes ) ) {
					unset( $box['id'] );
				} else {
					$hidden_meta_boxes[] = $box['id'];
				}
			}
		}
	}

	$user = wp_get_current_user();
	update_user_option( $user->ID, 'metaboxhidden_nav-menus', $hidden_meta_boxes, true );
}

/**
 * Creates meta boxes for any post type menu item..
 *
 * @since 3.0.0
 */
function wp_nav_menu_post_type_meta_boxes() {
	$post_types = get_post_types( array( 'show_in_nav_menus' => true ), 'object' );

	if ( ! $post_types )
		return;

	foreach ( $post_types as $post_type ) {
		/**
		 * Filters whether a menu items meta box will be added for the current
		 * object type.
		 *
		 * If a falsey value is returned instead of an object, the menu items
		 * meta box for the current meta box object will not be added.
		 *
		 * @since 3.0.0
		 *
		 * @param object $meta_box_object The current object to add a menu items
		 *                                meta box for.
		 */
		$post_type = apply_filters( 'nav_menu_meta_box_object', $post_type );
		if ( $post_type ) {
			$id = $post_type->name;
			// Give pages a higher priority.
			$priority = ( 'page' == $post_type->name ? 'core' : 'default' );
			add_meta_box( "add-post-type-{$id}", $post_type->labels->name, 'wp_nav_menu_item_post_type_meta_box', 'nav-menus', 'side', $priority, $post_type );
		}
	}
}

/**
 * Creates meta boxes for any taxonomy menu item.
 *
 * @since 3.0.0
 */
function wp_nav_menu_taxonomy_meta_boxes() {
	$taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'object' );

	if ( !$taxonomies )
		return;

	foreach ( $taxonomies as $tax ) {
		/** This filter is documented in wp-admin/includes/nav-menu.php */
		$tax = apply_filters( 'nav_menu_meta_box_object', $tax );
		if ( $tax ) {
			$id = $tax->name;
			add_meta_box( "add-{$id}", $tax->labels->name, 'wp_nav_menu_item_taxonomy_meta_box', 'nav-menus', 'side', 'default', $tax );
		}
	}
}

/**
 * Check whether to disable the Menu Locations meta box submit button
 *
 * @since 3.6.0
 *
 * @global bool $one_theme_location_no_menus to determine if no menus exist
 *
 * @param int|string $nav_menu_selected_id (id, name or slug) of the currently-selected menu
 * @return string Disabled attribute if at least one menu exists, false if not
 */
function wp_nav_menu_disabled_check( $nav_menu_selected_id ) {
	global $one_theme_location_no_menus;

	if ( $one_theme_location_no_menus )
		return false;

	return disabled( $nav_menu_selected_id, 0 );
}

/**
 * Displays a meta box for the custom links menu item.
 *
 * @since 3.0.0
 *
 * @global int        $_nav_menu_placeholder
 * @global int|string $nav_menu_selected_id
 */
function wp_nav_menu_item_link_meta_box() {
	global $_nav_menu_placeholder, $nav_menu_selected_id;

	$_nav_menu_placeholder = 0 > $_nav_menu_placeholder ? $_nav_menu_placeholder - 1 : -1;

	?>
	<div class="customlinkdiv" id="customlinkdiv">
		<input type="hidden" value="custom" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-type]" />
		<p id="menu-item-url-wrap" class="wp-clearfix">
			<label class="howto" for="custom-menu-item-url"><?php _e( 'URL' ); ?></label>
			<input id="custom-menu-item-url" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-url]" type="text" class="code menu-item-textbox" value="http://" />
		</p>

		<p id="menu-item-name-wrap" class="wp-clearfix">
			<label class="howto" for="custom-menu-item-name"><?php _e( 'Link Text' ); ?></label>
			<input id="custom-menu-item-name" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-title]" type="text" class="regular-text menu-item-textbox" />
		</p>

		<p class="button-controls wp-clearfix">
			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e('Add to Menu'); ?>" name="add-custom-menu-item" id="submit-customlinkdiv" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.customlinkdiv -->
	<?php
}

/**
 * Displays a meta box for a post type menu item.
 *
 * @since 3.0.0
 *
 * @global int        $_nav_menu_placeholder
 * @global int|string $nav_menu_selected_id
 *
 * @param string $object Not used.
 * @param array  $box {
 *     Post type menu item meta box arguments.
 *
 *     @type string       $id       Meta box 'id' attribute.
 *     @type string       $title    Meta box title.
 *     @type string       $callback Meta box display callback.
 *     @type WP_Post_Type $args     Extra meta box arguments (the post type object for this meta box).
 * }
 */
function wp_nav_menu_item_post_type_meta_box( $object, $box ) {
	global $_nav_menu_placeholder, $nav_menu_selected_id;

	$post_type_name = $box['args']->name;

	// Paginate browsing for large numbers of post objects.
	$per_page = 50;
	$pagenum = isset( $_REQUEST[$post_type_name . '-tab'] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
	$offset = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

	$args = array(
		'offset' => $offset,
		'order' => 'ASC',
		'orderby' => 'title',
		'posts_per_page' => $per_page,
		'post_type' => $post_type_name,
		'suppress_filters' => true,
		'update_post_term_cache' => false,
		'update_post_meta_cache' => false
	);

	if ( isset( $box['args']->_default_query ) )
		$args = array_merge($args, (array) $box['args']->_default_query );

	// @todo transient caching of these results with proper invalidation on updating of a post of this type
	$get_posts = new WP_Query;
	$posts = $get_posts->query( $args );
	if ( ! $get_posts->post_count ) {
		echo '<p>' . __( 'No items.' ) . '</p>';
		return;
	}

	$num_pages = $get_posts->max_num_pages;

	$page_links = paginate_links( array(
		'base' => add_query_arg(
			array(
				$post_type_name . '-tab' => 'all',
				'paged' => '%#%',
				'item-type' => 'post_type',
				'item-object' => $post_type_name,
			)
		),
		'format' => '',
		'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
		'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
		'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
		'total'   => $num_pages,
		'current' => $pagenum
	));

	$db_fields = false;
	if ( is_post_type_hierarchical( $post_type_name ) ) {
		$db_fields = array( 'parent' => 'post_parent', 'id' => 'ID' );
	}

	$walker = new Walker_Nav_Menu_Checklist( $db_fields );

	$current_tab = 'most-recent';
	if ( isset( $_REQUEST[$post_type_name . '-tab'] ) && in_array( $_REQUEST[$post_type_name . '-tab'], array('all', 'search') ) ) {
		$current_tab = $_REQUEST[$post_type_name . '-tab'];
	}

	if ( ! empty( $_REQUEST['quick-search-posttype-' . $post_type_name] ) ) {
		$current_tab = 'search';
	}

	$removed_args = array(
		'action',
		'customlink-tab',
		'edit-menu-item',
		'menu-item',
		'page-tab',
		'_wpnonce',
	);

	?>
	<div id="posttype-<?php echo $post_type_name; ?>" class="posttypediv">
		<ul id="posttype-<?php echo $post_type_name; ?>-tabs" class="posttype-tabs add-menu-item-tabs">
			<li <?php echo ( 'most-recent' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-most-recent" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'most-recent', remove_query_arg($removed_args))); ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent">
					<?php _e( 'Most Recent' ); ?>
				</a>
			</li>
			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="<?php echo esc_attr( $post_type_name ); ?>-all" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'all', remove_query_arg($removed_args))); ?>#<?php echo $post_type_name; ?>-all">
					<?php _e( 'View All' ); ?>
				</a>
			</li>
			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-search" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'search', remove_query_arg($removed_args))); ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
					<?php _e( 'Search'); ?>
				</a>
			</li>
		</ul><!-- .posttype-tabs -->

		<div id="tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent" class="tabs-panel <?php
			echo ( 'most-recent' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<ul id="<?php echo $post_type_name; ?>checklist-most-recent" class="categorychecklist form-no-clear">
				<?php
				$recent_args = array_merge( $args, array( 'orderby' => 'post_date', 'order' => 'DESC', 'posts_per_page' => 15 ) );
				$most_recent = $get_posts->query( $recent_args );
				$args['walker'] = $walker;

				/**
				 * Filters the posts displayed in the 'Most Recent' tab of the current
				 * post type's menu items meta box.
				 *
				 * The dynamic portion of the hook name, `$post_type_name`, refers to the post type name.
				 *
				 * @since 4.3.0
				 * @since 4.9.0 Added the `$recent_args` parameter.
				 *
				 * @param array $most_recent An array of post objects being listed.
				 * @param array $args        An array of WP_Query arguments for the meta box.
				 * @param array $box         Arguments passed to wp_nav_menu_item_post_type_meta_box().
				 * @param array $recent_args An array of WP_Query arguments for 'Most Recent' tab.
				 */
				$most_recent = apply_filters( "nav_menu_items_{$post_type_name}_recent", $most_recent, $args, $box, $recent_args );

				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $most_recent ), 0, (object) $args );
				?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div class="tabs-panel <?php
			echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>" id="tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
			<?php
			if ( isset( $_REQUEST['quick-search-posttype-' . $post_type_name] ) ) {
				$searched = esc_attr( $_REQUEST['quick-search-posttype-' . $post_type_name] );
				$search_results = get_posts( array( 's' => $searched, 'post_type' => $post_type_name, 'fields' => 'all', 'order' => 'DESC', ) );
			} else {
				$searched = '';
				$search_results = array();
			}
			?>
			<p class="quick-search-wrap">
				<label for="quick-search-posttype-<?php echo $post_type_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-posttype-<?php echo $post_type_name; ?>" id="quick-search-posttype-<?php echo $post_type_name; ?>" />
				<span class="spinner"></span>
				<?php submit_button( __( 'Search' ), 'small quick-search-submit hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-posttype-' . $post_type_name ) ); ?>
			</p>

			<ul id="<?php echo $post_type_name; ?>-search-checklist" data-wp-lists="list:<?php echo $post_type_name?>" class="categorychecklist form-no-clear">
			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $search_results), 0, (object) $args );
				?>
			<?php elseif ( is_wp_error( $search_results ) ) : ?>
				<li><?php echo $search_results->get_error_message(); ?></li>
			<?php elseif ( ! empty( $searched ) ) : ?>
				<li><?php _e('No results found.'); ?></li>
			<?php endif; ?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div id="<?php echo $post_type_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php
			echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
			<ul id="<?php echo $post_type_name; ?>checklist" data-wp-lists="list:<?php echo $post_type_name?>" class="categorychecklist form-no-clear">
				<?php
				$args['walker'] = $walker;

				/*
				 * If we're dealing with pages, let's put a checkbox for the front
				 * page at the top of the list.
				 */
				if ( 'page' == $post_type_name ) {
					$front_page = 'page' == get_option('show_on_front') ? (int) get_option( 'page_on_front' ) : 0;
					if ( ! empty( $front_page ) ) {
						$front_page_obj = get_post( $front_page );
						$front_page_obj->front_or_home = true;
						array_unshift( $posts, $front_page_obj );
					} else {
						$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval($_nav_menu_placeholder) - 1 : -1;
						array_unshift( $posts, (object) array(
							'front_or_home' => true,
							'ID' => 0,
							'object_id' => $_nav_menu_placeholder,
							'post_content' => '',
							'post_excerpt' => '',
							'post_parent' => '',
							'post_title' => _x('Home', 'nav menu home label'),
							'post_type' => 'nav_menu_item',
							'type' => 'custom',
							'url' => home_url('/'),
						) );
					}
				}

				$post_type = get_post_type_object( $post_type_name );

				if ( $post_type->has_archive ) {
					$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval($_nav_menu_placeholder) - 1 : -1;
					array_unshift( $posts, (object) array(
						'ID' => 0,
						'object_id' => $_nav_menu_placeholder,
						'object'     => $post_type_name,
						'post_content' => '',
						'post_excerpt' => '',
						'post_title' => $post_type->labels->archives,
						'post_type' => 'nav_menu_item',
						'type' => 'post_type_archive',
						'url' => get_post_type_archive_link( $post_type_name ),
					) );
				}

				/**
				 * Filters the posts displayed in the 'View All' tab of the current
				 * post type's menu items meta box.
				 *
				 * The dynamic portion of the hook name, `$post_type_name`, refers
				 * to the slug of the current post type.
				 *
				 * @since 3.2.0
				 * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
				 *
				 * @see WP_Query::query()
				 *
				 * @param array        $posts     The posts for the current post type.
				 * @param array        $args      An array of WP_Query arguments.
				 * @param WP_Post_Type $post_type The current post type object for this menu item meta box.
				 */
				$posts = apply_filters( "nav_menu_items_{$post_type_name}", $posts, $args, $post_type );

				$checkbox_items = walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $posts), 0, (object) $args );

				if ( 'all' == $current_tab && ! empty( $_REQUEST['selectall'] ) ) {
					$checkbox_items = preg_replace('/(type=(.)checkbox(\2))/', '$1 checked=$2checked$2', $checkbox_items);

				}

				echo $checkbox_items;
				?>
			</ul>
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
		</div><!-- /.tabs-panel -->

		<p class="button-controls wp-clearfix">
			<span class="list-controls">
				<a href="<?php
					echo esc_url( add_query_arg(
						array(
							$post_type_name . '-tab' => 'all',
							'selectall' => 1,
						),
						remove_query_arg( $removed_args )
					));
				?>#posttype-<?php echo $post_type_name; ?>" class="select-all aria-button-if-js"><?php _e( 'Select All' ); ?></a>
			</span>

			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-post-type-menu-item" id="<?php echo esc_attr( 'submit-posttype-' . $post_type_name ); ?>" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.posttypediv -->
	<?php
}

/**
 * Displays a meta box for a taxonomy menu item.
 *
 * @since 3.0.0
 *
 * @global int|string $nav_menu_selected_id
 *
 * @param string $object Not used.
 * @param array  $box {
 *     Taxonomy menu item meta box arguments.
 *
 *     @type string $id       Meta box 'id' attribute.
 *     @type string $title    Meta box title.
 *     @type string $callback Meta box display callback.
 *     @type object $args     Extra meta box arguments (the taxonomy object for this meta box).
 * }
 */
function wp_nav_menu_item_taxonomy_meta_box( $object, $box ) {
	global $nav_menu_selected_id;
	$taxonomy_name = $box['args']->name;
	$taxonomy = get_taxonomy( $taxonomy_name );

	// Paginate browsing for large numbers of objects.
	$per_page = 50;
	$pagenum = isset( $_REQUEST[$taxonomy_name . '-tab'] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
	$offset = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

	$args = array(
		'child_of' => 0,
		'exclude' => '',
		'hide_empty' => false,
		'hierarchical' => 1,
		'include' => '',
		'number' => $per_page,
		'offset' => $offset,
		'order' => 'ASC',
		'orderby' => 'name',
		'pad_counts' => false,
	);

	$terms = get_terms( $taxonomy_name, $args );

	if ( ! $terms || is_wp_error($terms) ) {
		echo '<p>' . __( 'No items.' ) . '</p>';
		return;
	}

	$num_pages = ceil( wp_count_terms( $taxonomy_name , array_merge( $args, array('number' => '', 'offset' => '') ) ) / $per_page );

	$page_links = paginate_links( array(
		'base' => add_query_arg(
			array(
				$taxonomy_name . '-tab' => 'all',
				'paged' => '%#%',
				'item-type' => 'taxonomy',
				'item-object' => $taxonomy_name,
			)
		),
		'format' => '',
		'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
		'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
		'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
		'total'   => $num_pages,
		'current' => $pagenum
	));

	$db_fields = false;
	if ( is_taxonomy_hierarchical( $taxonomy_name ) ) {
		$db_fields = array( 'parent' => 'parent', 'id' => 'term_id' );
	}

	$walker = new Walker_Nav_Menu_Checklist( $db_fields );

	$current_tab = 'most-used';
	if ( isset( $_REQUEST[$taxonomy_name . '-tab'] ) && in_array( $_REQUEST[$taxonomy_name . '-tab'], array('all', 'most-used', 'search') ) ) {
		$current_tab = $_REQUEST[$taxonomy_name . '-tab'];
	}

	if ( ! empty( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] ) ) {
		$current_tab = 'search';
	}

	$removed_args = array(
		'action',
		'customlink-tab',
		'edit-menu-item',
		'menu-item',
		'page-tab',
		'_wpnonce',
	);

	?>
	<div id="taxonomy-<?php echo $taxonomy_name; ?>" class="taxonomydiv">
		<ul id="taxonomy-<?php echo $taxonomy_name; ?>-tabs" class="taxonomy-tabs add-menu-item-tabs">
			<li <?php echo ( 'most-used' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-pop" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'most-used', remove_query_arg($removed_args))); ?>#tabs-panel-<?php echo $taxonomy_name; ?>-pop">
					<?php echo esc_html( $taxonomy->labels->most_used ); ?>
				</a>
			</li>
			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-all" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'all', remove_query_arg($removed_args))); ?>#tabs-panel-<?php echo $taxonomy_name; ?>-all">
					<?php _e( 'View All' ); ?>
				</a>
			</li>
			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-search-taxonomy-<?php echo esc_attr( $taxonomy_name ); ?>" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'search', remove_query_arg($removed_args))); ?>#tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
					<?php _e( 'Search' ); ?>
				</a>
			</li>
		</ul><!-- .taxonomy-tabs -->

		<div id="tabs-panel-<?php echo $taxonomy_name; ?>-pop" class="tabs-panel <?php
			echo ( 'most-used' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<ul id="<?php echo $taxonomy_name; ?>checklist-pop" class="categorychecklist form-no-clear" >
				<?php
				$popular_terms = get_terms( $taxonomy_name, array( 'orderby' => 'count', 'order' => 'DESC', 'number' => 10, 'hierarchical' => false ) );
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $popular_terms), 0, (object) $args );
				?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div id="tabs-panel-<?php echo $taxonomy_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php
			echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
			<ul id="<?php echo $taxonomy_name; ?>checklist" data-wp-lists="list:<?php echo $taxonomy_name?>" class="categorychecklist form-no-clear">
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $terms), 0, (object) $args );
				?>
			</ul>
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
		</div><!-- /.tabs-panel -->

		<div class="tabs-panel <?php
			echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>" id="tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
			<?php
			if ( isset( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] ) ) {
				$searched = esc_attr( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] );
				$search_results = get_terms( $taxonomy_name, array( 'name__like' => $searched, 'fields' => 'all', 'orderby' => 'count', 'order' => 'DESC', 'hierarchical' => false ) );
			} else {
				$searched = '';
				$search_results = array();
			}
			?>
			<p class="quick-search-wrap">
				<label for="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" id="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" />
				<span class="spinner"></span>
				<?php submit_button( __( 'Search' ), 'small quick-search-submit hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-taxonomy-' . $taxonomy_name ) ); ?>
			</p>

			<ul id="<?php echo $taxonomy_name; ?>-search-checklist" data-wp-lists="list:<?php echo $taxonomy_name?>" class="categorychecklist form-no-clear">
			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $search_results), 0, (object) $args );
				?>
			<?php elseif ( is_wp_error( $search_results ) ) : ?>
				<li><?php echo $search_results->get_error_message(); ?></li>
			<?php elseif ( ! empty( $searched ) ) : ?>
				<li><?php _e('No results found.'); ?></li>
			<?php endif; ?>
			</ul>
		</div><!-- /.tabs-panel -->

		<p class="button-controls wp-clearfix">
			<span class="list-controls">
				<a href="<?php
					echo esc_url(add_query_arg(
						array(
							$taxonomy_name . '-tab' => 'all',
							'selectall' => 1,
						),
						remove_query_arg($removed_args)
					));
				?>#taxonomy-<?php echo $taxonomy_name; ?>" class="select-all aria-button-if-js"><?php _e( 'Select All' ); ?></a>
			</span>

			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-taxonomy-menu-item" id="<?php echo esc_attr( 'submit-taxonomy-' . $taxonomy_name ); ?>" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.taxonomydiv -->
	<?php
}

/**
 * Save posted nav menu item data.
 *
 * @since 3.0.0
 *
 * @param int $menu_id The menu ID for which to save this item. $menu_id of 0 makes a draft, orphaned menu item.
 * @param array $menu_data The unsanitized posted menu item data.
 * @return array The database IDs of the items saved
 */
function wp_save_nav_menu_items( $menu_id = 0, $menu_data = array() ) {
	$menu_id = (int) $menu_id;
	$items_saved = array();

	if ( 0 == $menu_id || is_nav_menu( $menu_id ) ) {

		// Loop through all the menu items' POST values.
		foreach ( (array) $menu_data as $_possible_db_id => $_item_object_data ) {
			if (
				// Checkbox is not checked.
				empty( $_item_object_data['menu-item-object-id'] ) &&
				(
					// And item type either isn't set.
					! isset( $_item_object_data['menu-item-type'] ) ||
					// Or URL is the default.
					in_array( $_item_object_data['menu-item-url'], array( 'http://', '' ) ) ||
					! ( 'custom' == $_item_object_data['menu-item-type'] && ! isset( $_item_object_data['menu-item-db-id'] ) ) || // or it's not a custom menu item (but not the custom home page)
					// Or it *is* a custom menu item that already exists.
					! empty( $_item_object_data['menu-item-db-id'] )
				)
			) {
				// Then this potential menu item is not getting added to this menu.
				continue;
			}

			// If this possible menu item doesn't actually have a menu database ID yet.
			if (
				empty( $_item_object_data['menu-item-db-id'] ) ||
				( 0 > $_possible_db_id ) ||
				$_possible_db_id != $_item_object_data['menu-item-db-id']
			) {
				$_actual_db_id = 0;
			} else {
				$_actual_db_id = (int) $_item_object_data['menu-item-db-id'];
			}

			$args = array(
				'menu-item-db-id' => ( isset( $_item_object_data['menu-item-db-id'] ) ? $_item_object_data['menu-item-db-id'] : '' ),
				'menu-item-object-id' => ( isset( $_item_object_data['menu-item-object-id'] ) ? $_item_object_data['menu-item-object-id'] : '' ),
				'menu-item-object' => ( isset( $_item_object_data['menu-item-object'] ) ? $_item_object_data['menu-item-object'] : '' ),
				'menu-item-parent-id' => ( isset( $_item_object_data['menu-item-parent-id'] ) ? $_item_object_data['menu-item-parent-id'] : '' ),
				'menu-item-position' => ( isset( $_item_object_data['menu-item-position'] ) ? $_item_object_data['menu-item-position'] : '' ),
				'menu-item-type' => ( isset( $_item_object_data['menu-item-type'] ) ? $_item_object_data['menu-item-type'] : '' ),
				'menu-item-title' => ( isset( $_item_object_data['menu-item-title'] ) ? $_item_object_data['menu-item-title'] : '' ),
				'menu-item-url' => ( isset( $_item_object_data['menu-item-url'] ) ? $_item_object_data['menu-item-url'] : '' ),
				'menu-item-description' => ( isset( $_item_object_data['menu-item-description'] ) ? $_item_object_data['menu-item-description'] : '' ),
				'menu-item-attr-title' => ( isset( $_item_object_data['menu-item-attr-title'] ) ? $_item_object_data['menu-item-attr-title'] : '' ),
				'menu-item-target' => ( isset( $_item_object_data['menu-item-target'] ) ? $_item_object_data['menu-item-target'] : '' ),
				'menu-item-classes' => ( isset( $_item_object_data['menu-item-classes'] ) ? $_item_object_data['menu-item-classes'] : '' ),
				'menu-item-xfn' => ( isset( $_item_object_data['menu-item-xfn'] ) ? $_item_object_data['menu-item-xfn'] : '' ),
			);

			$items_saved[] = wp_update_nav_menu_item( $menu_id, $_actual_db_id, $args );

		}
	}
	return $items_saved;
}

/**
 * Adds custom arguments to some of the meta box object types.
 *
 * @since 3.0.0
 *
 * @access private
 *
 * @param object $object The post type or taxonomy meta-object.
 * @return object The post type of taxonomy object.
 */
function _wp_nav_menu_meta_box_object( $object = null ) {
	if ( isset( $object->name ) ) {

		if ( 'page' == $object->name ) {
			$object->_default_query = array(
				'orderby' => 'menu_order title',
				'post_status' => 'publish',
			);

		// Posts should show only published items.
		} elseif ( 'post' == $object->name ) {
			$object->_default_query = array(
				'post_status' => 'publish',
			);

		// Categories should be in reverse chronological order.
		} elseif ( 'category' == $object->name ) {
			$object->_default_query = array(
				'orderby' => 'id',
				'order' => 'DESC',
			);

		// Custom post types should show only published items.
		} else {
			$object->_default_query = array(
				'post_status' => 'publish',
			);
		}
	}

	return $object;
}

/**
 * Returns the menu formatted to edit.
 *
 * @since 3.0.0
 *
 * @param int $menu_id Optional. The ID of the menu to format. Default 0.
 * @return string|WP_Error $output The menu formatted to edit or error object on failure.
 */
function wp_get_nav_menu_to_edit( $menu_id = 0 ) {
	$menu = wp_get_nav_menu_object( $menu_id );

	// If the menu exists, get its items.
	if ( is_nav_menu( $menu ) ) {
		$menu_items = wp_get_nav_menu_items( $menu->term_id, array('post_status' => 'any') );
		$result = '<div id="menu-instructions" class="post-body-plain';
		$result .= ( ! empty($menu_items) ) ? ' menu-instructions-inactive">' : '">';
		$result .= '<p>' . __( 'Add menu items from the column on the left.' ) . '</p>';
		$result .= '</div>';

		if ( empty($menu_items) )
			return $result . ' <ul class="menu" id="menu-to-edit"> </ul>';

		/**
		 * Filters the Walker class used when adding nav menu items.
		 *
		 * @since 3.0.0
		 *
		 * @param string $class   The walker class to use. Default 'Walker_Nav_Menu_Edit'.
		 * @param int    $menu_id ID of the menu being rendered.
		 */
		$walker_class_name = apply_filters( 'wp_edit_nav_menu_walker', 'Walker_Nav_Menu_Edit', $menu_id );

		if ( class_exists( $walker_class_name ) ) {
			$walker = new $walker_class_name;
		} else {
			return new WP_Error( 'menu_walker_not_exist',
				/* translators: %s: walker class name */
				sprintf( __( 'The Walker class named %s does not exist.' ),
					'<strong>' . $walker_class_name . '</strong>'
				)
			);
		}

		$some_pending_menu_items = $some_invalid_menu_items = false;
		foreach ( (array) $menu_items as $menu_item ) {
			if ( isset( $menu_item->post_status ) && 'draft' == $menu_item->post_status )
				$some_pending_menu_items = true;
			if ( ! empty( $menu_item->_invalid ) )
				$some_invalid_menu_items = true;
		}

		if ( $some_pending_menu_items ) {
			$result .= '<div class="notice notice-info notice-alt inline"><p>' . __( 'Click Save Menu to make pending menu items public.' ) . '</p></div>';
		}

		if ( $some_invalid_menu_items ) {
			$result .= '<div class="notice notice-error notice-alt inline"><p>' . __( 'There are some invalid menu items. Please check or delete them.' ) . '</p></div>';
		}

		$result .= '<ul class="menu" id="menu-to-edit"> ';
		$result .= walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $menu_items), 0, (object) array('walker' => $walker ) );
		$result .= ' </ul> ';
		return $result;
	} elseif ( is_wp_error( $menu ) ) {
		return $menu;
	}

}

/**
 * Returns the columns for the nav menus page.
 *
 * @since 3.0.0
 *
 * @return array Columns.
 */
function wp_nav_menu_manage_columns() {
	return array(
		'_title'          => __( 'Show advanced menu properties' ),
		'cb'              => '<input type="checkbox" />',
		'link-target'     => __( 'Link Target' ),
		'title-attribute' => __( 'Title Attribute' ),
		'css-classes'     => __( 'CSS Classes' ),
		'xfn'             => __( 'Link Relationship (XFN)' ),
		'description'     => __( 'Description' ),
	);
}

/**
 * Deletes orphaned draft menu items
 *
 * @access private
 * @since 3.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 */
function _wp_delete_orphaned_draft_menu_items() {
	global $wpdb;
	$delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS );

	// Delete orphaned draft menu items.
	$menu_items_to_delete = $wpdb->get_col($wpdb->prepare("SELECT ID FROM $wpdb->posts AS p LEFT JOIN $wpdb->postmeta AS m ON p.ID = m.post_id WHERE post_type = 'nav_menu_item' AND post_status = 'draft' AND meta_key = '_menu_item_orphaned' AND meta_value < %d", $delete_timestamp ) );

	foreach ( (array) $menu_items_to_delete as $menu_item_id )
		wp_delete_post( $menu_item_id, true );
}

/**
 * Saves nav menu items
 *
 * @since 3.6.0
 *
 * @param int|string $nav_menu_selected_id (id, slug, or name ) of the currently-selected menu
 * @param string $nav_menu_selected_title Title of the currently-selected menu
 * @return array $messages The menu updated message
 */
function wp_nav_menu_update_menu_items ( $nav_menu_selected_id, $nav_menu_selected_title ) {
	$unsorted_menu_items = wp_get_nav_menu_items( $nav_menu_selected_id, array( 'orderby' => 'ID', 'output' => ARRAY_A, 'output_key' => 'ID', 'post_status' => 'draft,publish' ) );
	$messages = array();
	$menu_items = array();
	// Index menu items by db ID
	foreach ( $unsorted_menu_items as $_item )
		$menu_items[$_item->db_id] = $_item;

	$post_fields = array(
		'menu-item-db-id', 'menu-item-object-id', 'menu-item-object',
		'menu-item-parent-id', 'menu-item-position', 'menu-item-type',
		'menu-item-title', 'menu-item-url', 'menu-item-description',
		'menu-item-attr-title', 'menu-item-target', 'menu-item-classes', 'menu-item-xfn'
	);

	wp_defer_term_counting( true );
	// Loop through all the menu items' POST variables
	if ( ! empty( $_POST['menu-item-db-id'] ) ) {
		foreach ( (array) $_POST['menu-item-db-id'] as $_key => $k ) {

			// Menu item title can't be blank
			if ( ! isset( $_POST['menu-item-title'][ $_key ] ) || '' == $_POST['menu-item-title'][ $_key ] )
				continue;

			$args = array();
			foreach ( $post_fields as $field )
				$args[$field] = isset( $_POST[$field][$_key] ) ? $_POST[$field][$_key] : '';

			$menu_item_db_id = wp_update_nav_menu_item( $nav_menu_selected_id, ( $_POST['menu-item-db-id'][$_key] != $_key ? 0 : $_key ), $args );

			if ( is_wp_error( $menu_item_db_id ) ) {
				$messages[] = '<div id="message" class="error"><p>' . $menu_item_db_id->get_error_message() . '</p></div>';
			} else {
				unset( $menu_items[ $menu_item_db_id ] );
			}
		}
	}

	// Remove menu items from the menu that weren't in $_POST
	if ( ! empty( $menu_items ) ) {
		foreach ( array_keys( $menu_items ) as $menu_item_id ) {
			if ( is_nav_menu_item( $menu_item_id ) ) {
				wp_delete_post( $menu_item_id );
			}
		}
	}

	// Store 'auto-add' pages.
	$auto_add = ! empty( $_POST['auto-add-pages'] );
	$nav_menu_option = (array) get_option( 'nav_menu_options' );
	if ( ! isset( $nav_menu_option['auto_add'] ) )
		$nav_menu_option['auto_add'] = array();
	if ( $auto_add ) {
		if ( ! in_array( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) )
			$nav_menu_option['auto_add'][] = $nav_menu_selected_id;
	} else {
		if ( false !== ( $key = array_search( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) ) )
			unset( $nav_menu_option['auto_add'][$key] );
	}
	// Remove nonexistent/deleted menus
	$nav_menu_option['auto_add'] = array_intersect( $nav_menu_option['auto_add'], wp_get_nav_menus( array( 'fields' => 'ids' ) ) );
	update_option( 'nav_menu_options', $nav_menu_option );

	wp_defer_term_counting( false );

	/** This action is documented in wp-includes/nav-menu.php */
	do_action( 'wp_update_nav_menu', $nav_menu_selected_id );

	$messages[] = '<div id="message" class="updated notice is-dismissible"><p>' .
		/* translators: %s: nav menu title */
		sprintf( __( '%s has been updated.' ),
			'<strong>' . $nav_menu_selected_title . '</strong>'
		) . '</p></div>';

	unset( $menu_items, $unsorted_menu_items );

	return $messages;
}

/**
 * If a JSON blob of navigation menu data is in POST data, expand it and inject
 * it into `$_POST` to avoid PHP `max_input_vars` limitations. See #14134.
 *
 * @ignore
 * @since 4.5.3
 * @access private
 */
function _wp_expand_nav_menu_post_data() {
	if ( ! isset( $_POST['nav-menu-data'] ) ) {
		return;
	}

	$data = json_decode( stripslashes( $_POST['nav-menu-data'] ) );

	if ( ! is_null( $data ) && $data ) {
		foreach ( $data as $post_input_data ) {
			// For input names that are arrays (e.g. `menu-item-db-id[3][4][5]`),
			// derive the array path keys via regex and set the value in $_POST.
			preg_match( '#([^\[]*)(\[(.+)\])?#', $post_input_data->name, $matches );

			$array_bits = array( $matches[1] );

			if ( isset( $matches[3] ) ) {
				$array_bits = array_merge( $array_bits, explode( '][', $matches[3] ) );
			}

			$new_post_data = array();

			// Build the new array value from leaf to trunk.
			for ( $i = count( $array_bits ) - 1; $i >= 0; $i -- ) {
				if ( $i == count( $array_bits ) - 1 ) {
					$new_post_data[ $array_bits[ $i ] ] = wp_slash( $post_input_data->value );
				} else {
					$new_post_data = array( $array_bits[ $i ] => $new_post_data );
				}
			}

			$_POST = array_replace_recursive( $_POST, $new_post_data );
		}
	}
}
home/xbodynamge/lebauwcentre/wp-includes/nav-menu.php000064400000117340151132665200017011 0ustar00<?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 custom menu item, trim the URL.
		$args['menu-item-url'] = trim( $args['menu-item-url'] );
	} else {
		/*
		 * If non-custom menu item, then:
		 * - use the original object's URL.
		 * - blank default title to sync with the original object's title.
		 */

		$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 wp-includes/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 wp-includes/nav-menu.php */
			$menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' );

			/** This filter is documented in wp-includes/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 = 0, $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;
}
home/xbodynamge/www/wp-includes/nav-menu.php000064400000115514151133676370015171 0ustar00<?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
 *
 * @global string $_menu_item_sort_prop
 * @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 wp-includes/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 wp-includes/nav-menu.php */
			$menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' );

			/** This filter is documented in wp-includes/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 = 0, $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;
}
home/xbodynamge/namtation/wp-includes/nav-menu.php000064400000117340151134277240016330 0ustar00<?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 custom menu item, trim the URL.
		$args['menu-item-url'] = trim( $args['menu-item-url'] );
	} else {
		/*
		 * If non-custom menu item, then:
		 * - use the original object's URL.
		 * - blank default title to sync with the original object's title.
		 */

		$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 wp-includes/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 wp-includes/nav-menu.php */
			$menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' );

			/** This filter is documented in wp-includes/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 = 0, $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;
}
home/xbodynamge/lebauwcentre/wp-admin/includes/nav-menu.php000060400000126432151135414610020077 0ustar00<?php
/**
 * Core Navigation Menu API
 *
 * @package WordPress
 * @subpackage Nav_Menus
 * @since 3.0.0
 */

/** Walker_Nav_Menu_Edit class */
require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-edit.php' );

/** Walker_Nav_Menu_Checklist class */
require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-checklist.php' );

/**
 * Prints the appropriate response to a menu quick search.
 *
 * @since 3.0.0
 *
 * @param array $request The unsanitized request values.
 */
function _wp_ajax_menu_quick_search( $request = array() ) {
	$args            = array();
	$type            = isset( $request['type'] ) ? $request['type'] : '';
	$object_type     = isset( $request['object_type'] ) ? $request['object_type'] : '';
	$query           = isset( $request['q'] ) ? $request['q'] : '';
	$response_format = isset( $request['response-format'] ) && in_array( $request['response-format'], array( 'json', 'markup' ) ) ? $request['response-format'] : 'json';

	if ( 'markup' == $response_format ) {
		$args['walker'] = new Walker_Nav_Menu_Checklist;
	}

	if ( 'get-post-item' == $type ) {
		if ( post_type_exists( $object_type ) ) {
			if ( isset( $request['ID'] ) ) {
				$object_id = (int) $request['ID'];
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', array( get_post( $object_id ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID'         => $object_id,
							'post_title' => get_the_title( $object_id ),
							'post_type'  => get_post_type( $object_id ),
						)
					);
					echo "\n";
				}
			}
		} elseif ( taxonomy_exists( $object_type ) ) {
			if ( isset( $request['ID'] ) ) {
				$object_id = (int) $request['ID'];
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', array( get_term( $object_id, $object_type ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					$post_obj = get_term( $object_id, $object_type );
					echo wp_json_encode(
						array(
							'ID'         => $object_id,
							'post_title' => $post_obj->name,
							'post_type'  => $object_type,
						)
					);
					echo "\n";
				}
			}
		}
	} elseif ( preg_match( '/quick-search-(posttype|taxonomy)-([a-zA-Z_-]*\b)/', $type, $matches ) ) {
		if ( 'posttype' == $matches[1] && get_post_type_object( $matches[2] ) ) {
			$post_type_obj = _wp_nav_menu_meta_box_object( get_post_type_object( $matches[2] ) );
			$args          = array_merge(
				$args,
				array(
					'no_found_rows'          => true,
					'update_post_meta_cache' => false,
					'update_post_term_cache' => false,
					'posts_per_page'         => 10,
					'post_type'              => $matches[2],
					's'                      => $query,
				)
			);
			if ( isset( $post_type_obj->_default_query ) ) {
				$args = array_merge( $args, (array) $post_type_obj->_default_query );
			}
			$search_results_query = new WP_Query( $args );
			if ( ! $search_results_query->have_posts() ) {
				return;
			}
			while ( $search_results_query->have_posts() ) {
				$post = $search_results_query->next_post();
				if ( 'markup' == $response_format ) {
					$var_by_ref = $post->ID;
					echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', array( get_post( $var_by_ref ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID'         => $post->ID,
							'post_title' => get_the_title( $post->ID ),
							'post_type'  => $matches[2],
						)
					);
					echo "\n";
				}
			}
		} elseif ( 'taxonomy' == $matches[1] ) {
			$terms = get_terms(
				array(
					'taxonomy'   => $matches[2],
					'name__like' => $query,
					'number'     => 10,
				)
			);
			if ( empty( $terms ) || is_wp_error( $terms ) ) {
				return;
			}
			foreach ( (array) $terms as $term ) {
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', array( $term ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID'         => $term->term_id,
							'post_title' => $term->name,
							'post_type'  => $matches[2],
						)
					);
					echo "\n";
				}
			}
		}
	}
}

/**
 * Register nav menu meta boxes and advanced menu items.
 *
 * @since 3.0.0
 */
function wp_nav_menu_setup() {
	// Register meta boxes
	wp_nav_menu_post_type_meta_boxes();
	add_meta_box( 'add-custom-links', __( 'Custom Links' ), 'wp_nav_menu_item_link_meta_box', 'nav-menus', 'side', 'default' );
	wp_nav_menu_taxonomy_meta_boxes();

	// Register advanced menu items (columns)
	add_filter( 'manage_nav-menus_columns', 'wp_nav_menu_manage_columns' );

	// If first time editing, disable advanced items by default.
	if ( false === get_user_option( 'managenav-menuscolumnshidden' ) ) {
		$user = wp_get_current_user();
		update_user_option(
			$user->ID,
			'managenav-menuscolumnshidden',
			array(
				0 => 'link-target',
				1 => 'css-classes',
				2 => 'xfn',
				3 => 'description',
				4 => 'title-attribute',
			),
			true
		);
	}
}

/**
 * Limit the amount of meta boxes to pages, posts, links, and categories for first time users.
 *
 * @since 3.0.0
 *
 * @global array $wp_meta_boxes
 */
function wp_initial_nav_menu_meta_boxes() {
	global $wp_meta_boxes;

	if ( get_user_option( 'metaboxhidden_nav-menus' ) !== false || ! is_array( $wp_meta_boxes ) ) {
		return;
	}

	$initial_meta_boxes = array( 'add-post-type-page', 'add-post-type-post', 'add-custom-links', 'add-category' );
	$hidden_meta_boxes  = array();

	foreach ( array_keys( $wp_meta_boxes['nav-menus'] ) as $context ) {
		foreach ( array_keys( $wp_meta_boxes['nav-menus'][ $context ] ) as $priority ) {
			foreach ( $wp_meta_boxes['nav-menus'][ $context ][ $priority ] as $box ) {
				if ( in_array( $box['id'], $initial_meta_boxes ) ) {
					unset( $box['id'] );
				} else {
					$hidden_meta_boxes[] = $box['id'];
				}
			}
		}
	}

	$user = wp_get_current_user();
	update_user_option( $user->ID, 'metaboxhidden_nav-menus', $hidden_meta_boxes, true );
}

/**
 * Creates meta boxes for any post type menu item..
 *
 * @since 3.0.0
 */
function wp_nav_menu_post_type_meta_boxes() {
	$post_types = get_post_types( array( 'show_in_nav_menus' => true ), 'object' );

	if ( ! $post_types ) {
		return;
	}

	foreach ( $post_types as $post_type ) {
		/**
		 * Filters whether a menu items meta box will be added for the current
		 * object type.
		 *
		 * If a falsey value is returned instead of an object, the menu items
		 * meta box for the current meta box object will not be added.
		 *
		 * @since 3.0.0
		 *
		 * @param object $meta_box_object The current object to add a menu items
		 *                                meta box for.
		 */
		$post_type = apply_filters( 'nav_menu_meta_box_object', $post_type );
		if ( $post_type ) {
			$id = $post_type->name;
			// Give pages a higher priority.
			$priority = ( 'page' == $post_type->name ? 'core' : 'default' );
			add_meta_box( "add-post-type-{$id}", $post_type->labels->name, 'wp_nav_menu_item_post_type_meta_box', 'nav-menus', 'side', $priority, $post_type );
		}
	}
}

/**
 * Creates meta boxes for any taxonomy menu item.
 *
 * @since 3.0.0
 */
function wp_nav_menu_taxonomy_meta_boxes() {
	$taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'object' );

	if ( ! $taxonomies ) {
		return;
	}

	foreach ( $taxonomies as $tax ) {
		/** This filter is documented in wp-admin/includes/nav-menu.php */
		$tax = apply_filters( 'nav_menu_meta_box_object', $tax );
		if ( $tax ) {
			$id = $tax->name;
			add_meta_box( "add-{$id}", $tax->labels->name, 'wp_nav_menu_item_taxonomy_meta_box', 'nav-menus', 'side', 'default', $tax );
		}
	}
}

/**
 * Check whether to disable the Menu Locations meta box submit button
 *
 * @since 3.6.0
 *
 * @global bool $one_theme_location_no_menus to determine if no menus exist
 *
 * @param int|string $nav_menu_selected_id (id, name or slug) of the currently-selected menu
 * @return string Disabled attribute if at least one menu exists, false if not
 */
function wp_nav_menu_disabled_check( $nav_menu_selected_id ) {
	global $one_theme_location_no_menus;

	if ( $one_theme_location_no_menus ) {
		return false;
	}

	return disabled( $nav_menu_selected_id, 0 );
}

/**
 * Displays a meta box for the custom links menu item.
 *
 * @since 3.0.0
 *
 * @global int        $_nav_menu_placeholder
 * @global int|string $nav_menu_selected_id
 */
function wp_nav_menu_item_link_meta_box() {
	global $_nav_menu_placeholder, $nav_menu_selected_id;

	$_nav_menu_placeholder = 0 > $_nav_menu_placeholder ? $_nav_menu_placeholder - 1 : -1;

	?>
	<div class="customlinkdiv" id="customlinkdiv">
		<input type="hidden" value="custom" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-type]" />
		<p id="menu-item-url-wrap" class="wp-clearfix">
			<label class="howto" for="custom-menu-item-url"><?php _e( 'URL' ); ?></label>
			<input id="custom-menu-item-url" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-url]" type="text" class="code menu-item-textbox" value="http://" />
		</p>

		<p id="menu-item-name-wrap" class="wp-clearfix">
			<label class="howto" for="custom-menu-item-name"><?php _e( 'Link Text' ); ?></label>
			<input id="custom-menu-item-name" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-title]" type="text" class="regular-text menu-item-textbox" />
		</p>

		<p class="button-controls wp-clearfix">
			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-custom-menu-item" id="submit-customlinkdiv" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.customlinkdiv -->
	<?php
}

/**
 * Displays a meta box for a post type menu item.
 *
 * @since 3.0.0
 *
 * @global int        $_nav_menu_placeholder
 * @global int|string $nav_menu_selected_id
 *
 * @param string $object Not used.
 * @param array  $box {
 *     Post type menu item meta box arguments.
 *
 *     @type string       $id       Meta box 'id' attribute.
 *     @type string       $title    Meta box title.
 *     @type string       $callback Meta box display callback.
 *     @type WP_Post_Type $args     Extra meta box arguments (the post type object for this meta box).
 * }
 */
function wp_nav_menu_item_post_type_meta_box( $object, $box ) {
	global $_nav_menu_placeholder, $nav_menu_selected_id;

	$post_type_name = $box['args']->name;

	// Paginate browsing for large numbers of post objects.
	$per_page = 50;
	$pagenum  = isset( $_REQUEST[ $post_type_name . '-tab' ] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
	$offset   = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

	$args = array(
		'offset'                 => $offset,
		'order'                  => 'ASC',
		'orderby'                => 'title',
		'posts_per_page'         => $per_page,
		'post_type'              => $post_type_name,
		'suppress_filters'       => true,
		'update_post_term_cache' => false,
		'update_post_meta_cache' => false,
	);

	if ( isset( $box['args']->_default_query ) ) {
		$args = array_merge( $args, (array) $box['args']->_default_query );
	}

	// @todo transient caching of these results with proper invalidation on updating of a post of this type
	$get_posts = new WP_Query;
	$posts     = $get_posts->query( $args );
	if ( ! $get_posts->post_count ) {
		echo '<p>' . __( 'No items.' ) . '</p>';
		return;
	}

	$num_pages = $get_posts->max_num_pages;

	$page_links = paginate_links(
		array(
			'base'               => add_query_arg(
				array(
					$post_type_name . '-tab' => 'all',
					'paged'                  => '%#%',
					'item-type'              => 'post_type',
					'item-object'            => $post_type_name,
				)
			),
			'format'             => '',
			'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
			'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
			'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
			'total'              => $num_pages,
			'current'            => $pagenum,
		)
	);

	$db_fields = false;
	if ( is_post_type_hierarchical( $post_type_name ) ) {
		$db_fields = array(
			'parent' => 'post_parent',
			'id'     => 'ID',
		);
	}

	$walker = new Walker_Nav_Menu_Checklist( $db_fields );

	$current_tab = 'most-recent';
	if ( isset( $_REQUEST[ $post_type_name . '-tab' ] ) && in_array( $_REQUEST[ $post_type_name . '-tab' ], array( 'all', 'search' ) ) ) {
		$current_tab = $_REQUEST[ $post_type_name . '-tab' ];
	}

	if ( ! empty( $_REQUEST[ 'quick-search-posttype-' . $post_type_name ] ) ) {
		$current_tab = 'search';
	}

	$removed_args = array(
		'action',
		'customlink-tab',
		'edit-menu-item',
		'menu-item',
		'page-tab',
		'_wpnonce',
	);

	$most_recent_url = $view_all_url = $search_url = '';
	if ( $nav_menu_selected_id ) {
		$most_recent_url = esc_url( add_query_arg( $post_type_name . '-tab', 'most-recent', remove_query_arg( $removed_args ) ) );
		$view_all_url    = esc_url( add_query_arg( $post_type_name . '-tab', 'all', remove_query_arg( $removed_args ) ) );
		$search_url      = esc_url( add_query_arg( $post_type_name . '-tab', 'search', remove_query_arg( $removed_args ) ) );
	}
	?>
	<div id="posttype-<?php echo $post_type_name; ?>" class="posttypediv">
		<ul id="posttype-<?php echo $post_type_name; ?>-tabs" class="posttype-tabs add-menu-item-tabs">
			<li <?php echo ( 'most-recent' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-most-recent" href="<?php echo $most_recent_url; ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent">
					<?php _e( 'Most Recent' ); ?>
				</a>
			</li>
			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="<?php echo esc_attr( $post_type_name ); ?>-all" href="<?php echo $view_all_url; ?>#<?php echo $post_type_name; ?>-all">
					<?php _e( 'View All' ); ?>
				</a>
			</li>
			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-search" href="<?php echo $search_url; ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
					<?php _e( 'Search' ); ?>
				</a>
			</li>
		</ul><!-- .posttype-tabs -->

		<div id="tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent" class="tabs-panel <?php echo ( 'most-recent' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>">
			<ul id="<?php echo $post_type_name; ?>checklist-most-recent" class="categorychecklist form-no-clear">
				<?php
				$recent_args    = array_merge(
					$args,
					array(
						'orderby'        => 'post_date',
						'order'          => 'DESC',
						'posts_per_page' => 15,
					)
				);
				$most_recent    = $get_posts->query( $recent_args );
				$args['walker'] = $walker;

				/**
				 * Filters the posts displayed in the 'Most Recent' tab of the current
				 * post type's menu items meta box.
				 *
				 * The dynamic portion of the hook name, `$post_type_name`, refers to the post type name.
				 *
				 * @since 4.3.0
				 * @since 4.9.0 Added the `$recent_args` parameter.
				 *
				 * @param WP_Post[] $most_recent An array of post objects being listed.
				 * @param array     $args        An array of `WP_Query` arguments for the meta box.
				 * @param array     $box         Arguments passed to `wp_nav_menu_item_post_type_meta_box()`.
				 * @param array     $recent_args An array of `WP_Query` arguments for 'Most Recent' tab.
				 */
				$most_recent = apply_filters( "nav_menu_items_{$post_type_name}_recent", $most_recent, $args, $box, $recent_args );

				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $most_recent ), 0, (object) $args );
				?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div class="tabs-panel <?php echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>" id="tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
			<?php
			if ( isset( $_REQUEST[ 'quick-search-posttype-' . $post_type_name ] ) ) {
				$searched       = esc_attr( $_REQUEST[ 'quick-search-posttype-' . $post_type_name ] );
				$search_results = get_posts(
					array(
						's'         => $searched,
						'post_type' => $post_type_name,
						'fields'    => 'all',
						'order'     => 'DESC',
					)
				);
			} else {
				$searched       = '';
				$search_results = array();
			}
			?>
			<p class="quick-search-wrap">
				<label for="quick-search-posttype-<?php echo $post_type_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-posttype-<?php echo $post_type_name; ?>" id="quick-search-posttype-<?php echo $post_type_name; ?>" />
				<span class="spinner"></span>
				<?php submit_button( __( 'Search' ), 'small quick-search-submit hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-posttype-' . $post_type_name ) ); ?>
			</p>

			<ul id="<?php echo $post_type_name; ?>-search-checklist" data-wp-lists="list:<?php echo $post_type_name; ?>" class="categorychecklist form-no-clear">
			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $search_results ), 0, (object) $args );
				?>
			<?php elseif ( is_wp_error( $search_results ) ) : ?>
				<li><?php echo $search_results->get_error_message(); ?></li>
			<?php elseif ( ! empty( $searched ) ) : ?>
				<li><?php _e( 'No results found.' ); ?></li>
			<?php endif; ?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div id="<?php echo $post_type_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>">
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
			<ul id="<?php echo $post_type_name; ?>checklist" data-wp-lists="list:<?php echo $post_type_name; ?>" class="categorychecklist form-no-clear">
				<?php
				$args['walker'] = $walker;

				/*
				 * If we're dealing with pages, let's put a checkbox for the front
				 * page at the top of the list.
				 */
				if ( 'page' == $post_type_name ) {
					$front_page = 'page' == get_option( 'show_on_front' ) ? (int) get_option( 'page_on_front' ) : 0;
					if ( ! empty( $front_page ) ) {
						$front_page_obj                = get_post( $front_page );
						$front_page_obj->front_or_home = true;
						array_unshift( $posts, $front_page_obj );
					} else {
						$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval( $_nav_menu_placeholder ) - 1 : -1;
						array_unshift(
							$posts,
							(object) array(
								'front_or_home' => true,
								'ID'            => 0,
								'object_id'     => $_nav_menu_placeholder,
								'post_content'  => '',
								'post_excerpt'  => '',
								'post_parent'   => '',
								'post_title'    => _x( 'Home', 'nav menu home label' ),
								'post_type'     => 'nav_menu_item',
								'type'          => 'custom',
								'url'           => home_url( '/' ),
							)
						);
					}
				}

				$post_type = get_post_type_object( $post_type_name );

				if ( $post_type->has_archive ) {
					$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval( $_nav_menu_placeholder ) - 1 : -1;
					array_unshift(
						$posts,
						(object) array(
							'ID'           => 0,
							'object_id'    => $_nav_menu_placeholder,
							'object'       => $post_type_name,
							'post_content' => '',
							'post_excerpt' => '',
							'post_title'   => $post_type->labels->archives,
							'post_type'    => 'nav_menu_item',
							'type'         => 'post_type_archive',
							'url'          => get_post_type_archive_link( $post_type_name ),
						)
					);
				}

				/**
				 * Filters the posts displayed in the 'View All' tab of the current
				 * post type's menu items meta box.
				 *
				 * The dynamic portion of the hook name, `$post_type_name`, refers
				 * to the slug of the current post type.
				 *
				 * @since 3.2.0
				 * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
				 *
				 * @see WP_Query::query()
				 *
				 * @param object[]     $posts     The posts for the current post type. Mostly `WP_Post` objects, but
				 *                                can also contain "fake" post objects to represent other menu items.
				 * @param array        $args      An array of `WP_Query` arguments.
				 * @param WP_Post_Type $post_type The current post type object for this menu item meta box.
				 */
				$posts = apply_filters( "nav_menu_items_{$post_type_name}", $posts, $args, $post_type );

				$checkbox_items = walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $posts ), 0, (object) $args );

				if ( 'all' == $current_tab && ! empty( $_REQUEST['selectall'] ) ) {
					$checkbox_items = preg_replace( '/(type=(.)checkbox(\2))/', '$1 checked=$2checked$2', $checkbox_items );

				}

				echo $checkbox_items;
				?>
			</ul>
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
		</div><!-- /.tabs-panel -->

		<p class="button-controls wp-clearfix">
			<span class="list-controls">
				<a href="
				<?php
					echo esc_url(
						add_query_arg(
							array(
								$post_type_name . '-tab' => 'all',
								'selectall'              => 1,
							),
							remove_query_arg( $removed_args )
						)
					);
				?>
				#posttype-<?php echo $post_type_name; ?>" class="select-all aria-button-if-js"><?php _e( 'Select All' ); ?></a>
			</span>

			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-post-type-menu-item" id="<?php echo esc_attr( 'submit-posttype-' . $post_type_name ); ?>" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.posttypediv -->
	<?php
}

/**
 * Displays a meta box for a taxonomy menu item.
 *
 * @since 3.0.0
 *
 * @global int|string $nav_menu_selected_id
 *
 * @param string $object Not used.
 * @param array  $box {
 *     Taxonomy menu item meta box arguments.
 *
 *     @type string $id       Meta box 'id' attribute.
 *     @type string $title    Meta box title.
 *     @type string $callback Meta box display callback.
 *     @type object $args     Extra meta box arguments (the taxonomy object for this meta box).
 * }
 */
function wp_nav_menu_item_taxonomy_meta_box( $object, $box ) {
	global $nav_menu_selected_id;
	$taxonomy_name = $box['args']->name;
	$taxonomy      = get_taxonomy( $taxonomy_name );

	// Paginate browsing for large numbers of objects.
	$per_page = 50;
	$pagenum  = isset( $_REQUEST[ $taxonomy_name . '-tab' ] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
	$offset   = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

	$args = array(
		'child_of'     => 0,
		'exclude'      => '',
		'hide_empty'   => false,
		'hierarchical' => 1,
		'include'      => '',
		'number'       => $per_page,
		'offset'       => $offset,
		'order'        => 'ASC',
		'orderby'      => 'name',
		'pad_counts'   => false,
	);

	$terms = get_terms( $taxonomy_name, $args );

	if ( ! $terms || is_wp_error( $terms ) ) {
		echo '<p>' . __( 'No items.' ) . '</p>';
		return;
	}

	$num_pages = ceil(
		wp_count_terms(
			$taxonomy_name,
			array_merge(
				$args,
				array(
					'number' => '',
					'offset' => '',
				)
			)
		) / $per_page
	);

	$page_links = paginate_links(
		array(
			'base'               => add_query_arg(
				array(
					$taxonomy_name . '-tab' => 'all',
					'paged'                 => '%#%',
					'item-type'             => 'taxonomy',
					'item-object'           => $taxonomy_name,
				)
			),
			'format'             => '',
			'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
			'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
			'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
			'total'              => $num_pages,
			'current'            => $pagenum,
		)
	);

	$db_fields = false;
	if ( is_taxonomy_hierarchical( $taxonomy_name ) ) {
		$db_fields = array(
			'parent' => 'parent',
			'id'     => 'term_id',
		);
	}

	$walker = new Walker_Nav_Menu_Checklist( $db_fields );

	$current_tab = 'most-used';
	if ( isset( $_REQUEST[ $taxonomy_name . '-tab' ] ) && in_array( $_REQUEST[ $taxonomy_name . '-tab' ], array( 'all', 'most-used', 'search' ) ) ) {
		$current_tab = $_REQUEST[ $taxonomy_name . '-tab' ];
	}

	if ( ! empty( $_REQUEST[ 'quick-search-taxonomy-' . $taxonomy_name ] ) ) {
		$current_tab = 'search';
	}

	$removed_args = array(
		'action',
		'customlink-tab',
		'edit-menu-item',
		'menu-item',
		'page-tab',
		'_wpnonce',
	);

	$most_used_url = $view_all_url = $search_url = '';
	if ( $nav_menu_selected_id ) {
		$most_used_url = esc_url( add_query_arg( $taxonomy_name . '-tab', 'most-used', remove_query_arg( $removed_args ) ) );
		$view_all_url  = esc_url( add_query_arg( $taxonomy_name . '-tab', 'all', remove_query_arg( $removed_args ) ) );
		$search_url    = esc_url( add_query_arg( $taxonomy_name . '-tab', 'search', remove_query_arg( $removed_args ) ) );
	}
	?>
	<div id="taxonomy-<?php echo $taxonomy_name; ?>" class="taxonomydiv">
		<ul id="taxonomy-<?php echo $taxonomy_name; ?>-tabs" class="taxonomy-tabs add-menu-item-tabs">
			<li <?php echo ( 'most-used' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-pop" href="<?php echo $most_used_url; ?>#tabs-panel-<?php echo $taxonomy_name; ?>-pop">
					<?php echo esc_html( $taxonomy->labels->most_used ); ?>
				</a>
			</li>
			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-all" href="<?php echo $view_all_url; ?>#tabs-panel-<?php echo $taxonomy_name; ?>-all">
					<?php _e( 'View All' ); ?>
				</a>
			</li>
			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-search-taxonomy-<?php echo esc_attr( $taxonomy_name ); ?>" href="<?php echo $search_url; ?>#tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
					<?php _e( 'Search' ); ?>
				</a>
			</li>
		</ul><!-- .taxonomy-tabs -->

		<div id="tabs-panel-<?php echo $taxonomy_name; ?>-pop" class="tabs-panel <?php echo ( 'most-used' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?> ">
			<ul id="<?php echo $taxonomy_name; ?>checklist-pop" class="categorychecklist form-no-clear" >
				<?php
				$popular_terms  = get_terms(
					$taxonomy_name,
					array(
						'orderby'      => 'count',
						'order'        => 'DESC',
						'number'       => 10,
						'hierarchical' => false,
					)
				);
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $popular_terms ), 0, (object) $args );
				?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div id="tabs-panel-<?php echo $taxonomy_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?> ">
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
			<ul id="<?php echo $taxonomy_name; ?>checklist" data-wp-lists="list:<?php echo $taxonomy_name; ?>" class="categorychecklist form-no-clear">
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $terms ), 0, (object) $args );
				?>
			</ul>
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
		</div><!-- /.tabs-panel -->

		<div class="tabs-panel <?php echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' ); ?>" id="tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
			<?php
			if ( isset( $_REQUEST[ 'quick-search-taxonomy-' . $taxonomy_name ] ) ) {
				$searched       = esc_attr( $_REQUEST[ 'quick-search-taxonomy-' . $taxonomy_name ] );
				$search_results = get_terms(
					$taxonomy_name,
					array(
						'name__like'   => $searched,
						'fields'       => 'all',
						'orderby'      => 'count',
						'order'        => 'DESC',
						'hierarchical' => false,
					)
				);
			} else {
				$searched       = '';
				$search_results = array();
			}
			?>
			<p class="quick-search-wrap">
				<label for="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" id="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" />
				<span class="spinner"></span>
				<?php submit_button( __( 'Search' ), 'small quick-search-submit hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-taxonomy-' . $taxonomy_name ) ); ?>
			</p>

			<ul id="<?php echo $taxonomy_name; ?>-search-checklist" data-wp-lists="list:<?php echo $taxonomy_name; ?>" class="categorychecklist form-no-clear">
			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $search_results ), 0, (object) $args );
				?>
			<?php elseif ( is_wp_error( $search_results ) ) : ?>
				<li><?php echo $search_results->get_error_message(); ?></li>
			<?php elseif ( ! empty( $searched ) ) : ?>
				<li><?php _e( 'No results found.' ); ?></li>
			<?php endif; ?>
			</ul>
		</div><!-- /.tabs-panel -->

		<p class="button-controls wp-clearfix">
			<span class="list-controls">
				<a href="
				<?php
					echo esc_url(
						add_query_arg(
							array(
								$taxonomy_name . '-tab' => 'all',
								'selectall'             => 1,
							),
							remove_query_arg( $removed_args )
						)
					);
				?>
				#taxonomy-<?php echo $taxonomy_name; ?>" class="select-all aria-button-if-js"><?php _e( 'Select All' ); ?></a>
			</span>

			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-taxonomy-menu-item" id="<?php echo esc_attr( 'submit-taxonomy-' . $taxonomy_name ); ?>" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.taxonomydiv -->
	<?php
}

/**
 * Save posted nav menu item data.
 *
 * @since 3.0.0
 *
 * @param int     $menu_id   The menu ID for which to save this item. Value of 0 makes a draft, orphaned menu item. Default 0.
 * @param array[] $menu_data The unsanitized POSTed menu item data.
 * @return int[] The database IDs of the items saved
 */
function wp_save_nav_menu_items( $menu_id = 0, $menu_data = array() ) {
	$menu_id     = (int) $menu_id;
	$items_saved = array();

	if ( 0 == $menu_id || is_nav_menu( $menu_id ) ) {

		// Loop through all the menu items' POST values.
		foreach ( (array) $menu_data as $_possible_db_id => $_item_object_data ) {
			if (
				// Checkbox is not checked.
				empty( $_item_object_data['menu-item-object-id'] ) &&
				(
					// And item type either isn't set.
					! isset( $_item_object_data['menu-item-type'] ) ||
					// Or URL is the default.
					in_array( $_item_object_data['menu-item-url'], array( 'http://', '' ) ) ||
					! ( 'custom' == $_item_object_data['menu-item-type'] && ! isset( $_item_object_data['menu-item-db-id'] ) ) || // or it's not a custom menu item (but not the custom home page)
					// Or it *is* a custom menu item that already exists.
					! empty( $_item_object_data['menu-item-db-id'] )
				)
			) {
				// Then this potential menu item is not getting added to this menu.
				continue;
			}

			// If this possible menu item doesn't actually have a menu database ID yet.
			if (
				empty( $_item_object_data['menu-item-db-id'] ) ||
				( 0 > $_possible_db_id ) ||
				$_possible_db_id != $_item_object_data['menu-item-db-id']
			) {
				$_actual_db_id = 0;
			} else {
				$_actual_db_id = (int) $_item_object_data['menu-item-db-id'];
			}

			$args = array(
				'menu-item-db-id'       => ( isset( $_item_object_data['menu-item-db-id'] ) ? $_item_object_data['menu-item-db-id'] : '' ),
				'menu-item-object-id'   => ( isset( $_item_object_data['menu-item-object-id'] ) ? $_item_object_data['menu-item-object-id'] : '' ),
				'menu-item-object'      => ( isset( $_item_object_data['menu-item-object'] ) ? $_item_object_data['menu-item-object'] : '' ),
				'menu-item-parent-id'   => ( isset( $_item_object_data['menu-item-parent-id'] ) ? $_item_object_data['menu-item-parent-id'] : '' ),
				'menu-item-position'    => ( isset( $_item_object_data['menu-item-position'] ) ? $_item_object_data['menu-item-position'] : '' ),
				'menu-item-type'        => ( isset( $_item_object_data['menu-item-type'] ) ? $_item_object_data['menu-item-type'] : '' ),
				'menu-item-title'       => ( isset( $_item_object_data['menu-item-title'] ) ? $_item_object_data['menu-item-title'] : '' ),
				'menu-item-url'         => ( isset( $_item_object_data['menu-item-url'] ) ? $_item_object_data['menu-item-url'] : '' ),
				'menu-item-description' => ( isset( $_item_object_data['menu-item-description'] ) ? $_item_object_data['menu-item-description'] : '' ),
				'menu-item-attr-title'  => ( isset( $_item_object_data['menu-item-attr-title'] ) ? $_item_object_data['menu-item-attr-title'] : '' ),
				'menu-item-target'      => ( isset( $_item_object_data['menu-item-target'] ) ? $_item_object_data['menu-item-target'] : '' ),
				'menu-item-classes'     => ( isset( $_item_object_data['menu-item-classes'] ) ? $_item_object_data['menu-item-classes'] : '' ),
				'menu-item-xfn'         => ( isset( $_item_object_data['menu-item-xfn'] ) ? $_item_object_data['menu-item-xfn'] : '' ),
			);

			$items_saved[] = wp_update_nav_menu_item( $menu_id, $_actual_db_id, $args );

		}
	}
	return $items_saved;
}

/**
 * Adds custom arguments to some of the meta box object types.
 *
 * @since 3.0.0
 *
 * @access private
 *
 * @param object $object The post type or taxonomy meta-object.
 * @return object The post type of taxonomy object.
 */
function _wp_nav_menu_meta_box_object( $object = null ) {
	if ( isset( $object->name ) ) {

		if ( 'page' == $object->name ) {
			$object->_default_query = array(
				'orderby'     => 'menu_order title',
				'post_status' => 'publish',
			);

			// Posts should show only published items.
		} elseif ( 'post' == $object->name ) {
			$object->_default_query = array(
				'post_status' => 'publish',
			);

			// Categories should be in reverse chronological order.
		} elseif ( 'category' == $object->name ) {
			$object->_default_query = array(
				'orderby' => 'id',
				'order'   => 'DESC',
			);

			// Custom post types should show only published items.
		} else {
			$object->_default_query = array(
				'post_status' => 'publish',
			);
		}
	}

	return $object;
}

/**
 * Returns the menu formatted to edit.
 *
 * @since 3.0.0
 *
 * @param int $menu_id Optional. The ID of the menu to format. Default 0.
 * @return string|WP_Error $output The menu formatted to edit or error object on failure.
 */
function wp_get_nav_menu_to_edit( $menu_id = 0 ) {
	$menu = wp_get_nav_menu_object( $menu_id );

	// If the menu exists, get its items.
	if ( is_nav_menu( $menu ) ) {
		$menu_items = wp_get_nav_menu_items( $menu->term_id, array( 'post_status' => 'any' ) );
		$result     = '<div id="menu-instructions" class="post-body-plain';
		$result    .= ( ! empty( $menu_items ) ) ? ' menu-instructions-inactive">' : '">';
		$result    .= '<p>' . __( 'Add menu items from the column on the left.' ) . '</p>';
		$result    .= '</div>';

		if ( empty( $menu_items ) ) {
			return $result . ' <ul class="menu" id="menu-to-edit"> </ul>';
		}

		/**
		 * Filters the Walker class used when adding nav menu items.
		 *
		 * @since 3.0.0
		 *
		 * @param string $class   The walker class to use. Default 'Walker_Nav_Menu_Edit'.
		 * @param int    $menu_id ID of the menu being rendered.
		 */
		$walker_class_name = apply_filters( 'wp_edit_nav_menu_walker', 'Walker_Nav_Menu_Edit', $menu_id );

		if ( class_exists( $walker_class_name ) ) {
			$walker = new $walker_class_name;
		} else {
			return new WP_Error(
				'menu_walker_not_exist',
				/* translators: %s: walker class name */
				sprintf(
					__( 'The Walker class named %s does not exist.' ),
					'<strong>' . $walker_class_name . '</strong>'
				)
			);
		}

		$some_pending_menu_items = $some_invalid_menu_items = false;
		foreach ( (array) $menu_items as $menu_item ) {
			if ( isset( $menu_item->post_status ) && 'draft' == $menu_item->post_status ) {
				$some_pending_menu_items = true;
			}
			if ( ! empty( $menu_item->_invalid ) ) {
				$some_invalid_menu_items = true;
			}
		}

		if ( $some_pending_menu_items ) {
			$result .= '<div class="notice notice-info notice-alt inline"><p>' . __( 'Click Save Menu to make pending menu items public.' ) . '</p></div>';
		}

		if ( $some_invalid_menu_items ) {
			$result .= '<div class="notice notice-error notice-alt inline"><p>' . __( 'There are some invalid menu items. Please check or delete them.' ) . '</p></div>';
		}

		$result .= '<ul class="menu" id="menu-to-edit"> ';
		$result .= walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $menu_items ), 0, (object) array( 'walker' => $walker ) );
		$result .= ' </ul> ';
		return $result;
	} elseif ( is_wp_error( $menu ) ) {
		return $menu;
	}

}

/**
 * Returns the columns for the nav menus page.
 *
 * @since 3.0.0
 *
 * @return array Columns.
 */
function wp_nav_menu_manage_columns() {
	return array(
		'_title'          => __( 'Show advanced menu properties' ),
		'cb'              => '<input type="checkbox" />',
		'link-target'     => __( 'Link Target' ),
		'title-attribute' => __( 'Title Attribute' ),
		'css-classes'     => __( 'CSS Classes' ),
		'xfn'             => __( 'Link Relationship (XFN)' ),
		'description'     => __( 'Description' ),
	);
}

/**
 * Deletes orphaned draft menu items
 *
 * @access private
 * @since 3.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 */
function _wp_delete_orphaned_draft_menu_items() {
	global $wpdb;
	$delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS );

	// Delete orphaned draft menu items.
	$menu_items_to_delete = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts AS p LEFT JOIN $wpdb->postmeta AS m ON p.ID = m.post_id WHERE post_type = 'nav_menu_item' AND post_status = 'draft' AND meta_key = '_menu_item_orphaned' AND meta_value < %d", $delete_timestamp ) );

	foreach ( (array) $menu_items_to_delete as $menu_item_id ) {
		wp_delete_post( $menu_item_id, true );
	}
}

/**
 * Saves nav menu items
 *
 * @since 3.6.0
 *
 * @param int|string $nav_menu_selected_id (id, slug, or name ) of the currently-selected menu
 * @param string $nav_menu_selected_title Title of the currently-selected menu
 * @return array $messages The menu updated message
 */
function wp_nav_menu_update_menu_items( $nav_menu_selected_id, $nav_menu_selected_title ) {
	$unsorted_menu_items = wp_get_nav_menu_items(
		$nav_menu_selected_id,
		array(
			'orderby'     => 'ID',
			'output'      => ARRAY_A,
			'output_key'  => 'ID',
			'post_status' => 'draft,publish',
		)
	);
	$messages            = array();
	$menu_items          = array();
	// Index menu items by db ID
	foreach ( $unsorted_menu_items as $_item ) {
		$menu_items[ $_item->db_id ] = $_item;
	}

	$post_fields = array(
		'menu-item-db-id',
		'menu-item-object-id',
		'menu-item-object',
		'menu-item-parent-id',
		'menu-item-position',
		'menu-item-type',
		'menu-item-title',
		'menu-item-url',
		'menu-item-description',
		'menu-item-attr-title',
		'menu-item-target',
		'menu-item-classes',
		'menu-item-xfn',
	);

	wp_defer_term_counting( true );
	// Loop through all the menu items' POST variables
	if ( ! empty( $_POST['menu-item-db-id'] ) ) {
		foreach ( (array) $_POST['menu-item-db-id'] as $_key => $k ) {

			// Menu item title can't be blank
			if ( ! isset( $_POST['menu-item-title'][ $_key ] ) || '' == $_POST['menu-item-title'][ $_key ] ) {
				continue;
			}

			$args = array();
			foreach ( $post_fields as $field ) {
				$args[ $field ] = isset( $_POST[ $field ][ $_key ] ) ? $_POST[ $field ][ $_key ] : '';
			}

			$menu_item_db_id = wp_update_nav_menu_item( $nav_menu_selected_id, ( $_POST['menu-item-db-id'][ $_key ] != $_key ? 0 : $_key ), $args );

			if ( is_wp_error( $menu_item_db_id ) ) {
				$messages[] = '<div id="message" class="error"><p>' . $menu_item_db_id->get_error_message() . '</p></div>';
			} else {
				unset( $menu_items[ $menu_item_db_id ] );
			}
		}
	}

	// Remove menu items from the menu that weren't in $_POST
	if ( ! empty( $menu_items ) ) {
		foreach ( array_keys( $menu_items ) as $menu_item_id ) {
			if ( is_nav_menu_item( $menu_item_id ) ) {
				wp_delete_post( $menu_item_id );
			}
		}
	}

	// Store 'auto-add' pages.
	$auto_add        = ! empty( $_POST['auto-add-pages'] );
	$nav_menu_option = (array) get_option( 'nav_menu_options' );
	if ( ! isset( $nav_menu_option['auto_add'] ) ) {
		$nav_menu_option['auto_add'] = array();
	}
	if ( $auto_add ) {
		if ( ! in_array( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) ) {
			$nav_menu_option['auto_add'][] = $nav_menu_selected_id;
		}
	} else {
		if ( false !== ( $key = array_search( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) ) ) {
			unset( $nav_menu_option['auto_add'][ $key ] );
		}
	}
	// Remove nonexistent/deleted menus
	$nav_menu_option['auto_add'] = array_intersect( $nav_menu_option['auto_add'], wp_get_nav_menus( array( 'fields' => 'ids' ) ) );
	update_option( 'nav_menu_options', $nav_menu_option );

	wp_defer_term_counting( false );

	/** This action is documented in wp-includes/nav-menu.php */
	do_action( 'wp_update_nav_menu', $nav_menu_selected_id );

	$messages[] = '<div id="message" class="updated notice is-dismissible"><p>' .
		/* translators: %s: nav menu title */
		sprintf(
			__( '%s has been updated.' ),
			'<strong>' . $nav_menu_selected_title . '</strong>'
		) . '</p></div>';

	unset( $menu_items, $unsorted_menu_items );

	return $messages;
}

/**
 * If a JSON blob of navigation menu data is in POST data, expand it and inject
 * it into `$_POST` to avoid PHP `max_input_vars` limitations. See #14134.
 *
 * @ignore
 * @since 4.5.3
 * @access private
 */
function _wp_expand_nav_menu_post_data() {
	if ( ! isset( $_POST['nav-menu-data'] ) ) {
		return;
	}

	$data = json_decode( stripslashes( $_POST['nav-menu-data'] ) );

	if ( ! is_null( $data ) && $data ) {
		foreach ( $data as $post_input_data ) {
			// For input names that are arrays (e.g. `menu-item-db-id[3][4][5]`),
			// derive the array path keys via regex and set the value in $_POST.
			preg_match( '#([^\[]*)(\[(.+)\])?#', $post_input_data->name, $matches );

			$array_bits = array( $matches[1] );

			if ( isset( $matches[3] ) ) {
				$array_bits = array_merge( $array_bits, explode( '][', $matches[3] ) );
			}

			$new_post_data = array();

			// Build the new array value from leaf to trunk.
			for ( $i = count( $array_bits ) - 1; $i >= 0; $i -- ) {
				if ( $i == count( $array_bits ) - 1 ) {
					$new_post_data[ $array_bits[ $i ] ] = wp_slash( $post_input_data->value );
				} else {
					$new_post_data = array( $array_bits[ $i ] => $new_post_data );
				}
			}

			$_POST = array_replace_recursive( $_POST, $new_post_data );
		}
	}
}
home/xbodynamge/dev/wp-admin/includes/nav-menu.php000060400000122745151140246710016200 0ustar00<?php
/**
 * Core Navigation Menu API
 *
 * @package WordPress
 * @subpackage Nav_Menus
 * @since 3.0.0
 */

/** Walker_Nav_Menu_Edit class */
require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-edit.php' );

/** Walker_Nav_Menu_Checklist class */
require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-checklist.php' );

/**
 * Prints the appropriate response to a menu quick search.
 *
 * @since 3.0.0
 *
 * @param array $request The unsanitized request values.
 */
function _wp_ajax_menu_quick_search( $request = array() ) {
	$args = array();
	$type = isset( $request['type'] ) ? $request['type'] : '';
	$object_type = isset( $request['object_type'] ) ? $request['object_type'] : '';
	$query = isset( $request['q'] ) ? $request['q'] : '';
	$response_format = isset( $request['response-format'] ) && in_array( $request['response-format'], array( 'json', 'markup' ) ) ? $request['response-format'] : 'json';

	if ( 'markup' == $response_format ) {
		$args['walker'] = new Walker_Nav_Menu_Checklist;
	}

	if ( 'get-post-item' == $type ) {
		if ( post_type_exists( $object_type ) ) {
			if ( isset( $request['ID'] ) ) {
				$object_id = (int) $request['ID'];
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_post( $object_id ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID' => $object_id,
							'post_title' => get_the_title( $object_id ),
							'post_type' => get_post_type( $object_id ),
						)
					);
					echo "\n";
				}
			}
		} elseif ( taxonomy_exists( $object_type ) ) {
			if ( isset( $request['ID'] ) ) {
				$object_id = (int) $request['ID'];
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_term( $object_id, $object_type ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					$post_obj = get_term( $object_id, $object_type );
					echo wp_json_encode(
						array(
							'ID' => $object_id,
							'post_title' => $post_obj->name,
							'post_type' => $object_type,
						)
					);
					echo "\n";
				}
			}

		}

	} elseif ( preg_match('/quick-search-(posttype|taxonomy)-([a-zA-Z_-]*\b)/', $type, $matches) ) {
		if ( 'posttype' == $matches[1] && get_post_type_object( $matches[2] ) ) {
			$post_type_obj = _wp_nav_menu_meta_box_object( get_post_type_object( $matches[2] ) );
			$args = array_merge(
				$args,
				array(
					'no_found_rows'          => true,
					'update_post_meta_cache' => false,
					'update_post_term_cache' => false,
					'posts_per_page'         => 10,
					'post_type'              => $matches[2],
					's'                      => $query,
				)
			);
			if ( isset( $post_type_obj->_default_query ) ) {
				$args = array_merge( $args, (array) $post_type_obj->_default_query );
			}
			$search_results_query = new WP_Query( $args );
			if ( ! $search_results_query->have_posts() ) {
				return;
			}
			while ( $search_results_query->have_posts() ) {
				$post = $search_results_query->next_post();
				if ( 'markup' == $response_format ) {
					$var_by_ref = $post->ID;
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_post( $var_by_ref ) ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID' => $post->ID,
							'post_title' => get_the_title( $post->ID ),
							'post_type' => $matches[2],
						)
					);
					echo "\n";
				}
			}
		} elseif ( 'taxonomy' == $matches[1] ) {
			$terms = get_terms( $matches[2], array(
				'name__like' => $query,
				'number' => 10,
			));
			if ( empty( $terms ) || is_wp_error( $terms ) )
				return;
			foreach ( (array) $terms as $term ) {
				if ( 'markup' == $response_format ) {
					echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( $term ) ), 0, (object) $args );
				} elseif ( 'json' == $response_format ) {
					echo wp_json_encode(
						array(
							'ID' => $term->term_id,
							'post_title' => $term->name,
							'post_type' => $matches[2],
						)
					);
					echo "\n";
				}
			}
		}
	}
}

/**
 * Register nav menu meta boxes and advanced menu items.
 *
 * @since 3.0.0
 **/
function wp_nav_menu_setup() {
	// Register meta boxes
	wp_nav_menu_post_type_meta_boxes();
	add_meta_box( 'add-custom-links', __( 'Custom Links' ), 'wp_nav_menu_item_link_meta_box', 'nav-menus', 'side', 'default' );
	wp_nav_menu_taxonomy_meta_boxes();

	// Register advanced menu items (columns)
	add_filter( 'manage_nav-menus_columns', 'wp_nav_menu_manage_columns' );

	// If first time editing, disable advanced items by default.
	if ( false === get_user_option( 'managenav-menuscolumnshidden' ) ) {
		$user = wp_get_current_user();
		update_user_option($user->ID, 'managenav-menuscolumnshidden',
			array( 0 => 'link-target', 1 => 'css-classes', 2 => 'xfn', 3 => 'description', 4 => 'title-attribute', ),
			true);
	}
}

/**
 * Limit the amount of meta boxes to pages, posts, links, and categories for first time users.
 *
 * @since 3.0.0
 *
 * @global array $wp_meta_boxes
 **/
function wp_initial_nav_menu_meta_boxes() {
	global $wp_meta_boxes;

	if ( get_user_option( 'metaboxhidden_nav-menus' ) !== false || ! is_array($wp_meta_boxes) )
		return;

	$initial_meta_boxes = array( 'add-post-type-page', 'add-post-type-post', 'add-custom-links', 'add-category' );
	$hidden_meta_boxes = array();

	foreach ( array_keys($wp_meta_boxes['nav-menus']) as $context ) {
		foreach ( array_keys($wp_meta_boxes['nav-menus'][$context]) as $priority ) {
			foreach ( $wp_meta_boxes['nav-menus'][$context][$priority] as $box ) {
				if ( in_array( $box['id'], $initial_meta_boxes ) ) {
					unset( $box['id'] );
				} else {
					$hidden_meta_boxes[] = $box['id'];
				}
			}
		}
	}

	$user = wp_get_current_user();
	update_user_option( $user->ID, 'metaboxhidden_nav-menus', $hidden_meta_boxes, true );
}

/**
 * Creates meta boxes for any post type menu item..
 *
 * @since 3.0.0
 */
function wp_nav_menu_post_type_meta_boxes() {
	$post_types = get_post_types( array( 'show_in_nav_menus' => true ), 'object' );

	if ( ! $post_types )
		return;

	foreach ( $post_types as $post_type ) {
		/**
		 * Filters whether a menu items meta box will be added for the current
		 * object type.
		 *
		 * If a falsey value is returned instead of an object, the menu items
		 * meta box for the current meta box object will not be added.
		 *
		 * @since 3.0.0
		 *
		 * @param object $meta_box_object The current object to add a menu items
		 *                                meta box for.
		 */
		$post_type = apply_filters( 'nav_menu_meta_box_object', $post_type );
		if ( $post_type ) {
			$id = $post_type->name;
			// Give pages a higher priority.
			$priority = ( 'page' == $post_type->name ? 'core' : 'default' );
			add_meta_box( "add-post-type-{$id}", $post_type->labels->name, 'wp_nav_menu_item_post_type_meta_box', 'nav-menus', 'side', $priority, $post_type );
		}
	}
}

/**
 * Creates meta boxes for any taxonomy menu item.
 *
 * @since 3.0.0
 */
function wp_nav_menu_taxonomy_meta_boxes() {
	$taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'object' );

	if ( !$taxonomies )
		return;

	foreach ( $taxonomies as $tax ) {
		/** This filter is documented in wp-admin/includes/nav-menu.php */
		$tax = apply_filters( 'nav_menu_meta_box_object', $tax );
		if ( $tax ) {
			$id = $tax->name;
			add_meta_box( "add-{$id}", $tax->labels->name, 'wp_nav_menu_item_taxonomy_meta_box', 'nav-menus', 'side', 'default', $tax );
		}
	}
}

/**
 * Check whether to disable the Menu Locations meta box submit button
 *
 * @since 3.6.0
 *
 * @global bool $one_theme_location_no_menus to determine if no menus exist
 *
 * @param int|string $nav_menu_selected_id (id, name or slug) of the currently-selected menu
 * @return string Disabled attribute if at least one menu exists, false if not
 */
function wp_nav_menu_disabled_check( $nav_menu_selected_id ) {
	global $one_theme_location_no_menus;

	if ( $one_theme_location_no_menus )
		return false;

	return disabled( $nav_menu_selected_id, 0 );
}

/**
 * Displays a meta box for the custom links menu item.
 *
 * @since 3.0.0
 *
 * @global int        $_nav_menu_placeholder
 * @global int|string $nav_menu_selected_id
 */
function wp_nav_menu_item_link_meta_box() {
	global $_nav_menu_placeholder, $nav_menu_selected_id;

	$_nav_menu_placeholder = 0 > $_nav_menu_placeholder ? $_nav_menu_placeholder - 1 : -1;

	?>
	<div class="customlinkdiv" id="customlinkdiv">
		<input type="hidden" value="custom" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-type]" />
		<p id="menu-item-url-wrap" class="wp-clearfix">
			<label class="howto" for="custom-menu-item-url"><?php _e( 'URL' ); ?></label>
			<input id="custom-menu-item-url" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-url]" type="text" class="code menu-item-textbox" value="http://" />
		</p>

		<p id="menu-item-name-wrap" class="wp-clearfix">
			<label class="howto" for="custom-menu-item-name"><?php _e( 'Link Text' ); ?></label>
			<input id="custom-menu-item-name" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-title]" type="text" class="regular-text menu-item-textbox" />
		</p>

		<p class="button-controls wp-clearfix">
			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e('Add to Menu'); ?>" name="add-custom-menu-item" id="submit-customlinkdiv" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.customlinkdiv -->
	<?php
}

/**
 * Displays a meta box for a post type menu item.
 *
 * @since 3.0.0
 *
 * @global int        $_nav_menu_placeholder
 * @global int|string $nav_menu_selected_id
 *
 * @param string $object Not used.
 * @param array  $box {
 *     Post type menu item meta box arguments.
 *
 *     @type string       $id       Meta box 'id' attribute.
 *     @type string       $title    Meta box title.
 *     @type string       $callback Meta box display callback.
 *     @type WP_Post_Type $args     Extra meta box arguments (the post type object for this meta box).
 * }
 */
function wp_nav_menu_item_post_type_meta_box( $object, $box ) {
	global $_nav_menu_placeholder, $nav_menu_selected_id;

	$post_type_name = $box['args']->name;

	// Paginate browsing for large numbers of post objects.
	$per_page = 50;
	$pagenum = isset( $_REQUEST[$post_type_name . '-tab'] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
	$offset = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

	$args = array(
		'offset' => $offset,
		'order' => 'ASC',
		'orderby' => 'title',
		'posts_per_page' => $per_page,
		'post_type' => $post_type_name,
		'suppress_filters' => true,
		'update_post_term_cache' => false,
		'update_post_meta_cache' => false
	);

	if ( isset( $box['args']->_default_query ) )
		$args = array_merge($args, (array) $box['args']->_default_query );

	// @todo transient caching of these results with proper invalidation on updating of a post of this type
	$get_posts = new WP_Query;
	$posts = $get_posts->query( $args );
	if ( ! $get_posts->post_count ) {
		echo '<p>' . __( 'No items.' ) . '</p>';
		return;
	}

	$num_pages = $get_posts->max_num_pages;

	$page_links = paginate_links( array(
		'base' => add_query_arg(
			array(
				$post_type_name . '-tab' => 'all',
				'paged' => '%#%',
				'item-type' => 'post_type',
				'item-object' => $post_type_name,
			)
		),
		'format' => '',
		'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
		'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
		'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
		'total'   => $num_pages,
		'current' => $pagenum
	));

	$db_fields = false;
	if ( is_post_type_hierarchical( $post_type_name ) ) {
		$db_fields = array( 'parent' => 'post_parent', 'id' => 'ID' );
	}

	$walker = new Walker_Nav_Menu_Checklist( $db_fields );

	$current_tab = 'most-recent';
	if ( isset( $_REQUEST[$post_type_name . '-tab'] ) && in_array( $_REQUEST[$post_type_name . '-tab'], array('all', 'search') ) ) {
		$current_tab = $_REQUEST[$post_type_name . '-tab'];
	}

	if ( ! empty( $_REQUEST['quick-search-posttype-' . $post_type_name] ) ) {
		$current_tab = 'search';
	}

	$removed_args = array(
		'action',
		'customlink-tab',
		'edit-menu-item',
		'menu-item',
		'page-tab',
		'_wpnonce',
	);

	?>
	<div id="posttype-<?php echo $post_type_name; ?>" class="posttypediv">
		<ul id="posttype-<?php echo $post_type_name; ?>-tabs" class="posttype-tabs add-menu-item-tabs">
			<li <?php echo ( 'most-recent' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-most-recent" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'most-recent', remove_query_arg($removed_args))); ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent">
					<?php _e( 'Most Recent' ); ?>
				</a>
			</li>
			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="<?php echo esc_attr( $post_type_name ); ?>-all" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'all', remove_query_arg($removed_args))); ?>#<?php echo $post_type_name; ?>-all">
					<?php _e( 'View All' ); ?>
				</a>
			</li>
			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-search" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'search', remove_query_arg($removed_args))); ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
					<?php _e( 'Search'); ?>
				</a>
			</li>
		</ul><!-- .posttype-tabs -->

		<div id="tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent" class="tabs-panel <?php
			echo ( 'most-recent' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<ul id="<?php echo $post_type_name; ?>checklist-most-recent" class="categorychecklist form-no-clear">
				<?php
				$recent_args = array_merge( $args, array( 'orderby' => 'post_date', 'order' => 'DESC', 'posts_per_page' => 15 ) );
				$most_recent = $get_posts->query( $recent_args );
				$args['walker'] = $walker;

				/**
				 * Filters the posts displayed in the 'Most Recent' tab of the current
				 * post type's menu items meta box.
				 *
				 * The dynamic portion of the hook name, `$post_type_name`, refers to the post type name.
				 *
				 * @since 4.3.0
				 * @since 4.9.0 Added the `$recent_args` parameter.
				 *
				 * @param array $most_recent An array of post objects being listed.
				 * @param array $args        An array of WP_Query arguments for the meta box.
				 * @param array $box         Arguments passed to wp_nav_menu_item_post_type_meta_box().
				 * @param array $recent_args An array of WP_Query arguments for 'Most Recent' tab.
				 */
				$most_recent = apply_filters( "nav_menu_items_{$post_type_name}_recent", $most_recent, $args, $box, $recent_args );

				echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $most_recent ), 0, (object) $args );
				?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div class="tabs-panel <?php
			echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>" id="tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
			<?php
			if ( isset( $_REQUEST['quick-search-posttype-' . $post_type_name] ) ) {
				$searched = esc_attr( $_REQUEST['quick-search-posttype-' . $post_type_name] );
				$search_results = get_posts( array( 's' => $searched, 'post_type' => $post_type_name, 'fields' => 'all', 'order' => 'DESC', ) );
			} else {
				$searched = '';
				$search_results = array();
			}
			?>
			<p class="quick-search-wrap">
				<label for="quick-search-posttype-<?php echo $post_type_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-posttype-<?php echo $post_type_name; ?>" id="quick-search-posttype-<?php echo $post_type_name; ?>" />
				<span class="spinner"></span>
				<?php submit_button( __( 'Search' ), 'small quick-search-submit hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-posttype-' . $post_type_name ) ); ?>
			</p>

			<ul id="<?php echo $post_type_name; ?>-search-checklist" data-wp-lists="list:<?php echo $post_type_name?>" class="categorychecklist form-no-clear">
			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $search_results), 0, (object) $args );
				?>
			<?php elseif ( is_wp_error( $search_results ) ) : ?>
				<li><?php echo $search_results->get_error_message(); ?></li>
			<?php elseif ( ! empty( $searched ) ) : ?>
				<li><?php _e('No results found.'); ?></li>
			<?php endif; ?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div id="<?php echo $post_type_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php
			echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
			<ul id="<?php echo $post_type_name; ?>checklist" data-wp-lists="list:<?php echo $post_type_name?>" class="categorychecklist form-no-clear">
				<?php
				$args['walker'] = $walker;

				/*
				 * If we're dealing with pages, let's put a checkbox for the front
				 * page at the top of the list.
				 */
				if ( 'page' == $post_type_name ) {
					$front_page = 'page' == get_option('show_on_front') ? (int) get_option( 'page_on_front' ) : 0;
					if ( ! empty( $front_page ) ) {
						$front_page_obj = get_post( $front_page );
						$front_page_obj->front_or_home = true;
						array_unshift( $posts, $front_page_obj );
					} else {
						$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval($_nav_menu_placeholder) - 1 : -1;
						array_unshift( $posts, (object) array(
							'front_or_home' => true,
							'ID' => 0,
							'object_id' => $_nav_menu_placeholder,
							'post_content' => '',
							'post_excerpt' => '',
							'post_parent' => '',
							'post_title' => _x('Home', 'nav menu home label'),
							'post_type' => 'nav_menu_item',
							'type' => 'custom',
							'url' => home_url('/'),
						) );
					}
				}

				$post_type = get_post_type_object( $post_type_name );

				if ( $post_type->has_archive ) {
					$_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval($_nav_menu_placeholder) - 1 : -1;
					array_unshift( $posts, (object) array(
						'ID' => 0,
						'object_id' => $_nav_menu_placeholder,
						'object'     => $post_type_name,
						'post_content' => '',
						'post_excerpt' => '',
						'post_title' => $post_type->labels->archives,
						'post_type' => 'nav_menu_item',
						'type' => 'post_type_archive',
						'url' => get_post_type_archive_link( $post_type_name ),
					) );
				}

				/**
				 * Filters the posts displayed in the 'View All' tab of the current
				 * post type's menu items meta box.
				 *
				 * The dynamic portion of the hook name, `$post_type_name`, refers
				 * to the slug of the current post type.
				 *
				 * @since 3.2.0
				 * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
				 *
				 * @see WP_Query::query()
				 *
				 * @param array        $posts     The posts for the current post type.
				 * @param array        $args      An array of WP_Query arguments.
				 * @param WP_Post_Type $post_type The current post type object for this menu item meta box.
				 */
				$posts = apply_filters( "nav_menu_items_{$post_type_name}", $posts, $args, $post_type );

				$checkbox_items = walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $posts), 0, (object) $args );

				if ( 'all' == $current_tab && ! empty( $_REQUEST['selectall'] ) ) {
					$checkbox_items = preg_replace('/(type=(.)checkbox(\2))/', '$1 checked=$2checked$2', $checkbox_items);

				}

				echo $checkbox_items;
				?>
			</ul>
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
		</div><!-- /.tabs-panel -->

		<p class="button-controls wp-clearfix">
			<span class="list-controls">
				<a href="<?php
					echo esc_url( add_query_arg(
						array(
							$post_type_name . '-tab' => 'all',
							'selectall' => 1,
						),
						remove_query_arg( $removed_args )
					));
				?>#posttype-<?php echo $post_type_name; ?>" class="select-all aria-button-if-js"><?php _e( 'Select All' ); ?></a>
			</span>

			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-post-type-menu-item" id="<?php echo esc_attr( 'submit-posttype-' . $post_type_name ); ?>" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.posttypediv -->
	<?php
}

/**
 * Displays a meta box for a taxonomy menu item.
 *
 * @since 3.0.0
 *
 * @global int|string $nav_menu_selected_id
 *
 * @param string $object Not used.
 * @param array  $box {
 *     Taxonomy menu item meta box arguments.
 *
 *     @type string $id       Meta box 'id' attribute.
 *     @type string $title    Meta box title.
 *     @type string $callback Meta box display callback.
 *     @type object $args     Extra meta box arguments (the taxonomy object for this meta box).
 * }
 */
function wp_nav_menu_item_taxonomy_meta_box( $object, $box ) {
	global $nav_menu_selected_id;
	$taxonomy_name = $box['args']->name;
	$taxonomy = get_taxonomy( $taxonomy_name );

	// Paginate browsing for large numbers of objects.
	$per_page = 50;
	$pagenum = isset( $_REQUEST[$taxonomy_name . '-tab'] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
	$offset = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

	$args = array(
		'child_of' => 0,
		'exclude' => '',
		'hide_empty' => false,
		'hierarchical' => 1,
		'include' => '',
		'number' => $per_page,
		'offset' => $offset,
		'order' => 'ASC',
		'orderby' => 'name',
		'pad_counts' => false,
	);

	$terms = get_terms( $taxonomy_name, $args );

	if ( ! $terms || is_wp_error($terms) ) {
		echo '<p>' . __( 'No items.' ) . '</p>';
		return;
	}

	$num_pages = ceil( wp_count_terms( $taxonomy_name , array_merge( $args, array('number' => '', 'offset' => '') ) ) / $per_page );

	$page_links = paginate_links( array(
		'base' => add_query_arg(
			array(
				$taxonomy_name . '-tab' => 'all',
				'paged' => '%#%',
				'item-type' => 'taxonomy',
				'item-object' => $taxonomy_name,
			)
		),
		'format' => '',
		'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',
		'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',
		'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',
		'total'   => $num_pages,
		'current' => $pagenum
	));

	$db_fields = false;
	if ( is_taxonomy_hierarchical( $taxonomy_name ) ) {
		$db_fields = array( 'parent' => 'parent', 'id' => 'term_id' );
	}

	$walker = new Walker_Nav_Menu_Checklist( $db_fields );

	$current_tab = 'most-used';
	if ( isset( $_REQUEST[$taxonomy_name . '-tab'] ) && in_array( $_REQUEST[$taxonomy_name . '-tab'], array('all', 'most-used', 'search') ) ) {
		$current_tab = $_REQUEST[$taxonomy_name . '-tab'];
	}

	if ( ! empty( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] ) ) {
		$current_tab = 'search';
	}

	$removed_args = array(
		'action',
		'customlink-tab',
		'edit-menu-item',
		'menu-item',
		'page-tab',
		'_wpnonce',
	);

	?>
	<div id="taxonomy-<?php echo $taxonomy_name; ?>" class="taxonomydiv">
		<ul id="taxonomy-<?php echo $taxonomy_name; ?>-tabs" class="taxonomy-tabs add-menu-item-tabs">
			<li <?php echo ( 'most-used' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-pop" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'most-used', remove_query_arg($removed_args))); ?>#tabs-panel-<?php echo $taxonomy_name; ?>-pop">
					<?php echo esc_html( $taxonomy->labels->most_used ); ?>
				</a>
			</li>
			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-all" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'all', remove_query_arg($removed_args))); ?>#tabs-panel-<?php echo $taxonomy_name; ?>-all">
					<?php _e( 'View All' ); ?>
				</a>
			</li>
			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
				<a class="nav-tab-link" data-type="tabs-panel-search-taxonomy-<?php echo esc_attr( $taxonomy_name ); ?>" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'search', remove_query_arg($removed_args))); ?>#tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
					<?php _e( 'Search' ); ?>
				</a>
			</li>
		</ul><!-- .taxonomy-tabs -->

		<div id="tabs-panel-<?php echo $taxonomy_name; ?>-pop" class="tabs-panel <?php
			echo ( 'most-used' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<ul id="<?php echo $taxonomy_name; ?>checklist-pop" class="categorychecklist form-no-clear" >
				<?php
				$popular_terms = get_terms( $taxonomy_name, array( 'orderby' => 'count', 'order' => 'DESC', 'number' => 10, 'hierarchical' => false ) );
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $popular_terms), 0, (object) $args );
				?>
			</ul>
		</div><!-- /.tabs-panel -->

		<div id="tabs-panel-<?php echo $taxonomy_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php
			echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>">
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
			<ul id="<?php echo $taxonomy_name; ?>checklist" data-wp-lists="list:<?php echo $taxonomy_name?>" class="categorychecklist form-no-clear">
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $terms), 0, (object) $args );
				?>
			</ul>
			<?php if ( ! empty( $page_links ) ) : ?>
				<div class="add-menu-item-pagelinks">
					<?php echo $page_links; ?>
				</div>
			<?php endif; ?>
		</div><!-- /.tabs-panel -->

		<div class="tabs-panel <?php
			echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
		?>" id="tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
			<?php
			if ( isset( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] ) ) {
				$searched = esc_attr( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] );
				$search_results = get_terms( $taxonomy_name, array( 'name__like' => $searched, 'fields' => 'all', 'orderby' => 'count', 'order' => 'DESC', 'hierarchical' => false ) );
			} else {
				$searched = '';
				$search_results = array();
			}
			?>
			<p class="quick-search-wrap">
				<label for="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" id="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" />
				<span class="spinner"></span>
				<?php submit_button( __( 'Search' ), 'small quick-search-submit hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-taxonomy-' . $taxonomy_name ) ); ?>
			</p>

			<ul id="<?php echo $taxonomy_name; ?>-search-checklist" data-wp-lists="list:<?php echo $taxonomy_name?>" class="categorychecklist form-no-clear">
			<?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
				<?php
				$args['walker'] = $walker;
				echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $search_results), 0, (object) $args );
				?>
			<?php elseif ( is_wp_error( $search_results ) ) : ?>
				<li><?php echo $search_results->get_error_message(); ?></li>
			<?php elseif ( ! empty( $searched ) ) : ?>
				<li><?php _e('No results found.'); ?></li>
			<?php endif; ?>
			</ul>
		</div><!-- /.tabs-panel -->

		<p class="button-controls wp-clearfix">
			<span class="list-controls">
				<a href="<?php
					echo esc_url(add_query_arg(
						array(
							$taxonomy_name . '-tab' => 'all',
							'selectall' => 1,
						),
						remove_query_arg($removed_args)
					));
				?>#taxonomy-<?php echo $taxonomy_name; ?>" class="select-all aria-button-if-js"><?php _e( 'Select All' ); ?></a>
			</span>

			<span class="add-to-menu">
				<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-taxonomy-menu-item" id="<?php echo esc_attr( 'submit-taxonomy-' . $taxonomy_name ); ?>" />
				<span class="spinner"></span>
			</span>
		</p>

	</div><!-- /.taxonomydiv -->
	<?php
}

/**
 * Save posted nav menu item data.
 *
 * @since 3.0.0
 *
 * @param int $menu_id The menu ID for which to save this item. $menu_id of 0 makes a draft, orphaned menu item.
 * @param array $menu_data The unsanitized posted menu item data.
 * @return array The database IDs of the items saved
 */
function wp_save_nav_menu_items( $menu_id = 0, $menu_data = array() ) {
	$menu_id = (int) $menu_id;
	$items_saved = array();

	if ( 0 == $menu_id || is_nav_menu( $menu_id ) ) {

		// Loop through all the menu items' POST values.
		foreach ( (array) $menu_data as $_possible_db_id => $_item_object_data ) {
			if (
				// Checkbox is not checked.
				empty( $_item_object_data['menu-item-object-id'] ) &&
				(
					// And item type either isn't set.
					! isset( $_item_object_data['menu-item-type'] ) ||
					// Or URL is the default.
					in_array( $_item_object_data['menu-item-url'], array( 'http://', '' ) ) ||
					! ( 'custom' == $_item_object_data['menu-item-type'] && ! isset( $_item_object_data['menu-item-db-id'] ) ) || // or it's not a custom menu item (but not the custom home page)
					// Or it *is* a custom menu item that already exists.
					! empty( $_item_object_data['menu-item-db-id'] )
				)
			) {
				// Then this potential menu item is not getting added to this menu.
				continue;
			}

			// If this possible menu item doesn't actually have a menu database ID yet.
			if (
				empty( $_item_object_data['menu-item-db-id'] ) ||
				( 0 > $_possible_db_id ) ||
				$_possible_db_id != $_item_object_data['menu-item-db-id']
			) {
				$_actual_db_id = 0;
			} else {
				$_actual_db_id = (int) $_item_object_data['menu-item-db-id'];
			}

			$args = array(
				'menu-item-db-id' => ( isset( $_item_object_data['menu-item-db-id'] ) ? $_item_object_data['menu-item-db-id'] : '' ),
				'menu-item-object-id' => ( isset( $_item_object_data['menu-item-object-id'] ) ? $_item_object_data['menu-item-object-id'] : '' ),
				'menu-item-object' => ( isset( $_item_object_data['menu-item-object'] ) ? $_item_object_data['menu-item-object'] : '' ),
				'menu-item-parent-id' => ( isset( $_item_object_data['menu-item-parent-id'] ) ? $_item_object_data['menu-item-parent-id'] : '' ),
				'menu-item-position' => ( isset( $_item_object_data['menu-item-position'] ) ? $_item_object_data['menu-item-position'] : '' ),
				'menu-item-type' => ( isset( $_item_object_data['menu-item-type'] ) ? $_item_object_data['menu-item-type'] : '' ),
				'menu-item-title' => ( isset( $_item_object_data['menu-item-title'] ) ? $_item_object_data['menu-item-title'] : '' ),
				'menu-item-url' => ( isset( $_item_object_data['menu-item-url'] ) ? $_item_object_data['menu-item-url'] : '' ),
				'menu-item-description' => ( isset( $_item_object_data['menu-item-description'] ) ? $_item_object_data['menu-item-description'] : '' ),
				'menu-item-attr-title' => ( isset( $_item_object_data['menu-item-attr-title'] ) ? $_item_object_data['menu-item-attr-title'] : '' ),
				'menu-item-target' => ( isset( $_item_object_data['menu-item-target'] ) ? $_item_object_data['menu-item-target'] : '' ),
				'menu-item-classes' => ( isset( $_item_object_data['menu-item-classes'] ) ? $_item_object_data['menu-item-classes'] : '' ),
				'menu-item-xfn' => ( isset( $_item_object_data['menu-item-xfn'] ) ? $_item_object_data['menu-item-xfn'] : '' ),
			);

			$items_saved[] = wp_update_nav_menu_item( $menu_id, $_actual_db_id, $args );

		}
	}
	return $items_saved;
}

/**
 * Adds custom arguments to some of the meta box object types.
 *
 * @since 3.0.0
 *
 * @access private
 *
 * @param object $object The post type or taxonomy meta-object.
 * @return object The post type of taxonomy object.
 */
function _wp_nav_menu_meta_box_object( $object = null ) {
	if ( isset( $object->name ) ) {

		if ( 'page' == $object->name ) {
			$object->_default_query = array(
				'orderby' => 'menu_order title',
				'post_status' => 'publish',
			);

		// Posts should show only published items.
		} elseif ( 'post' == $object->name ) {
			$object->_default_query = array(
				'post_status' => 'publish',
			);

		// Categories should be in reverse chronological order.
		} elseif ( 'category' == $object->name ) {
			$object->_default_query = array(
				'orderby' => 'id',
				'order' => 'DESC',
			);

		// Custom post types should show only published items.
		} else {
			$object->_default_query = array(
				'post_status' => 'publish',
			);
		}
	}

	return $object;
}

/**
 * Returns the menu formatted to edit.
 *
 * @since 3.0.0
 *
 * @param int $menu_id Optional. The ID of the menu to format. Default 0.
 * @return string|WP_Error $output The menu formatted to edit or error object on failure.
 */
function wp_get_nav_menu_to_edit( $menu_id = 0 ) {
	$menu = wp_get_nav_menu_object( $menu_id );

	// If the menu exists, get its items.
	if ( is_nav_menu( $menu ) ) {
		$menu_items = wp_get_nav_menu_items( $menu->term_id, array('post_status' => 'any') );
		$result = '<div id="menu-instructions" class="post-body-plain';
		$result .= ( ! empty($menu_items) ) ? ' menu-instructions-inactive">' : '">';
		$result .= '<p>' . __( 'Add menu items from the column on the left.' ) . '</p>';
		$result .= '</div>';

		if ( empty($menu_items) )
			return $result . ' <ul class="menu" id="menu-to-edit"> </ul>';

		/**
		 * Filters the Walker class used when adding nav menu items.
		 *
		 * @since 3.0.0
		 *
		 * @param string $class   The walker class to use. Default 'Walker_Nav_Menu_Edit'.
		 * @param int    $menu_id ID of the menu being rendered.
		 */
		$walker_class_name = apply_filters( 'wp_edit_nav_menu_walker', 'Walker_Nav_Menu_Edit', $menu_id );

		if ( class_exists( $walker_class_name ) ) {
			$walker = new $walker_class_name;
		} else {
			return new WP_Error( 'menu_walker_not_exist',
				/* translators: %s: walker class name */
				sprintf( __( 'The Walker class named %s does not exist.' ),
					'<strong>' . $walker_class_name . '</strong>'
				)
			);
		}

		$some_pending_menu_items = $some_invalid_menu_items = false;
		foreach ( (array) $menu_items as $menu_item ) {
			if ( isset( $menu_item->post_status ) && 'draft' == $menu_item->post_status )
				$some_pending_menu_items = true;
			if ( ! empty( $menu_item->_invalid ) )
				$some_invalid_menu_items = true;
		}

		if ( $some_pending_menu_items ) {
			$result .= '<div class="notice notice-info notice-alt inline"><p>' . __( 'Click Save Menu to make pending menu items public.' ) . '</p></div>';
		}

		if ( $some_invalid_menu_items ) {
			$result .= '<div class="notice notice-error notice-alt inline"><p>' . __( 'There are some invalid menu items. Please check or delete them.' ) . '</p></div>';
		}

		$result .= '<ul class="menu" id="menu-to-edit"> ';
		$result .= walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $menu_items), 0, (object) array('walker' => $walker ) );
		$result .= ' </ul> ';
		return $result;
	} elseif ( is_wp_error( $menu ) ) {
		return $menu;
	}

}

/**
 * Returns the columns for the nav menus page.
 *
 * @since 3.0.0
 *
 * @return array Columns.
 */
function wp_nav_menu_manage_columns() {
	return array(
		'_title'          => __( 'Show advanced menu properties' ),
		'cb'              => '<input type="checkbox" />',
		'link-target'     => __( 'Link Target' ),
		'title-attribute' => __( 'Title Attribute' ),
		'css-classes'     => __( 'CSS Classes' ),
		'xfn'             => __( 'Link Relationship (XFN)' ),
		'description'     => __( 'Description' ),
	);
}

/**
 * Deletes orphaned draft menu items
 *
 * @access private
 * @since 3.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 */
function _wp_delete_orphaned_draft_menu_items() {
	global $wpdb;
	$delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS );

	// Delete orphaned draft menu items.
	$menu_items_to_delete = $wpdb->get_col($wpdb->prepare("SELECT ID FROM $wpdb->posts AS p LEFT JOIN $wpdb->postmeta AS m ON p.ID = m.post_id WHERE post_type = 'nav_menu_item' AND post_status = 'draft' AND meta_key = '_menu_item_orphaned' AND meta_value < %d", $delete_timestamp ) );

	foreach ( (array) $menu_items_to_delete as $menu_item_id )
		wp_delete_post( $menu_item_id, true );
}

/**
 * Saves nav menu items
 *
 * @since 3.6.0
 *
 * @param int|string $nav_menu_selected_id (id, slug, or name ) of the currently-selected menu
 * @param string $nav_menu_selected_title Title of the currently-selected menu
 * @return array $messages The menu updated message
 */
function wp_nav_menu_update_menu_items ( $nav_menu_selected_id, $nav_menu_selected_title ) {
	$unsorted_menu_items = wp_get_nav_menu_items( $nav_menu_selected_id, array( 'orderby' => 'ID', 'output' => ARRAY_A, 'output_key' => 'ID', 'post_status' => 'draft,publish' ) );
	$messages = array();
	$menu_items = array();
	// Index menu items by db ID
	foreach ( $unsorted_menu_items as $_item )
		$menu_items[$_item->db_id] = $_item;

	$post_fields = array(
		'menu-item-db-id', 'menu-item-object-id', 'menu-item-object',
		'menu-item-parent-id', 'menu-item-position', 'menu-item-type',
		'menu-item-title', 'menu-item-url', 'menu-item-description',
		'menu-item-attr-title', 'menu-item-target', 'menu-item-classes', 'menu-item-xfn'
	);

	wp_defer_term_counting( true );
	// Loop through all the menu items' POST variables
	if ( ! empty( $_POST['menu-item-db-id'] ) ) {
		foreach ( (array) $_POST['menu-item-db-id'] as $_key => $k ) {

			// Menu item title can't be blank
			if ( ! isset( $_POST['menu-item-title'][ $_key ] ) || '' == $_POST['menu-item-title'][ $_key ] )
				continue;

			$args = array();
			foreach ( $post_fields as $field )
				$args[$field] = isset( $_POST[$field][$_key] ) ? $_POST[$field][$_key] : '';

			$menu_item_db_id = wp_update_nav_menu_item( $nav_menu_selected_id, ( $_POST['menu-item-db-id'][$_key] != $_key ? 0 : $_key ), $args );

			if ( is_wp_error( $menu_item_db_id ) ) {
				$messages[] = '<div id="message" class="error"><p>' . $menu_item_db_id->get_error_message() . '</p></div>';
			} else {
				unset( $menu_items[ $menu_item_db_id ] );
			}
		}
	}

	// Remove menu items from the menu that weren't in $_POST
	if ( ! empty( $menu_items ) ) {
		foreach ( array_keys( $menu_items ) as $menu_item_id ) {
			if ( is_nav_menu_item( $menu_item_id ) ) {
				wp_delete_post( $menu_item_id );
			}
		}
	}

	// Store 'auto-add' pages.
	$auto_add = ! empty( $_POST['auto-add-pages'] );
	$nav_menu_option = (array) get_option( 'nav_menu_options' );
	if ( ! isset( $nav_menu_option['auto_add'] ) )
		$nav_menu_option['auto_add'] = array();
	if ( $auto_add ) {
		if ( ! in_array( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) )
			$nav_menu_option['auto_add'][] = $nav_menu_selected_id;
	} else {
		if ( false !== ( $key = array_search( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) ) )
			unset( $nav_menu_option['auto_add'][$key] );
	}
	// Remove nonexistent/deleted menus
	$nav_menu_option['auto_add'] = array_intersect( $nav_menu_option['auto_add'], wp_get_nav_menus( array( 'fields' => 'ids' ) ) );
	update_option( 'nav_menu_options', $nav_menu_option );

	wp_defer_term_counting( false );

	/** This action is documented in wp-includes/nav-menu.php */
	do_action( 'wp_update_nav_menu', $nav_menu_selected_id );

	$messages[] = '<div id="message" class="updated notice is-dismissible"><p>' .
		/* translators: %s: nav menu title */
		sprintf( __( '%s has been updated.' ),
			'<strong>' . $nav_menu_selected_title . '</strong>'
		) . '</p></div>';

	unset( $menu_items, $unsorted_menu_items );

	return $messages;
}

/**
 * If a JSON blob of navigation menu data is in POST data, expand it and inject
 * it into `$_POST` to avoid PHP `max_input_vars` limitations. See #14134.
 *
 * @ignore
 * @since 4.5.3
 * @access private
 */
function _wp_expand_nav_menu_post_data() {
	if ( ! isset( $_POST['nav-menu-data'] ) ) {
		return;
	}

	$data = json_decode( stripslashes( $_POST['nav-menu-data'] ) );

	if ( ! is_null( $data ) && $data ) {
		foreach ( $data as $post_input_data ) {
			// For input names that are arrays (e.g. `menu-item-db-id[3][4][5]`),
			// derive the array path keys via regex and set the value in $_POST.
			preg_match( '#([^\[]*)(\[(.+)\])?#', $post_input_data->name, $matches );

			$array_bits = array( $matches[1] );

			if ( isset( $matches[3] ) ) {
				$array_bits = array_merge( $array_bits, explode( '][', $matches[3] ) );
			}

			$new_post_data = array();

			// Build the new array value from leaf to trunk.
			for ( $i = count( $array_bits ) - 1; $i >= 0; $i -- ) {
				if ( $i == count( $array_bits ) - 1 ) {
					$new_post_data[ $array_bits[ $i ] ] = wp_slash( $post_input_data->value );
				} else {
					$new_post_data = array( $array_bits[ $i ] => $new_post_data );
				}
			}

			$_POST = array_replace_recursive( $_POST, $new_post_data );
		}
	}
}