WP_Customize_Nav_Menus::available_item_types(): array

Source

public function available_item_types() {
	$item_types = array();

	$post_types = get_post_types( array( 'show_in_nav_menus' => true ), 'objects' );
	if ( $post_types ) {
		foreach ( $post_types as $slug => $post_type ) {
			$item_types[] = array(
				'title'      => $post_type->labels->name,
				'type_label' => $post_type->labels->singular_name,
				'type'       => 'post_type',
				'object'     => $post_type->name,
			);
		}
	}

	$taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'objects' );
	if ( $taxonomies ) {
		foreach ( $taxonomies as $slug => $taxonomy ) {
			if ( 'post_format' === $taxonomy && ! current_theme_supports( 'post-formats' ) ) {
				continue;
			}
			$item_types[] = array(
				'title'      => $taxonomy->labels->name,
				'type_label' => $taxonomy->labels->singular_name,
				'type'       => 'taxonomy',
				'object'     => $taxonomy->name,
			);
		}
	}

	/**
	 * Filters the available menu item types.
	 *
	 * @since 4.3.0
	 * @since 4.7.0  Each array item now includes a `$type_label` in addition to `$title`, `$type`, and `$object`.
	 *
	 * @param array $item_types Navigation menu item types.
	 */
	$item_types = apply_filters( 'customize_nav_menu_available_item_types', $item_types );

	return $item_types;
}

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