WP_Nav_Menu_Widget

17class WP_Nav_Menu_Widget extends WP_Widget {18 19	/**20	 * Sets up a new Navigation Menu widget instance.21	 *22	 * @since 3.0.023	 */24	public function __construct() {25		$widget_ops = array(26			'description'                 => __( 'Add a navigation menu to your sidebar.' ),27			'customize_selective_refresh' => true,28			'show_instance_in_rest'       => true,29		);30		parent::__construct( 'nav_menu', __( 'Navigation Menu' ), $widget_ops );31	}32 33	/**34	 * Outputs the content for the current Navigation Menu widget instance.35	 *36	 * @since 3.0.037	 *38	 * @param array $args     Display arguments including 'before_title', 'after_title',39	 *                        'before_widget', and 'after_widget'.40	 * @param array $instance Settings for the current Navigation Menu widget instance.41	 */42	public function widget( $args, $instance ) {43		// Get menu.44		$nav_menu = ! empty( $instance['nav_menu'] ) ? wp_get_nav_menu_object( $instance['nav_menu'] ) : false;45 46		if ( ! $nav_menu ) {47			return;48		}49 50		$default_title = __( 'Menu' );51		$title         = ! empty( $instance['title'] ) ? $instance['title'] : '';52 53		/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */54		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );55 56		echo $args['before_widget'];57 58		if ( $title ) {59			echo $args['before_title'] . $title . $args['after_title'];60		}61 62		$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';63 64		/**65		 * Filters the HTML format of widgets with navigation links.66		 *67		 * @since 5.5.068		 *69		 * @param string $format The type of markup to use in widgets with navigation links.70		 *                       Accepts 'html5', 'xhtml'.71		 */72		$format = apply_filters( 'navigation_widgets_format', $format );73 74		if ( 'html5' === $format ) {75			// The title may be filtered: Strip out HTML and make sure the aria-label is never empty.76			$title      = trim( strip_tags( $title ) );77			$aria_label = $title ? $title : $default_title;78 79			$nav_menu_args = array(80				'fallback_cb'          => '',81				'menu'                 => $nav_menu,82				'container'            => 'nav',83				'container_aria_label' => $aria_label,84				'items_wrap'           => '<ul id="%1$s" class="%2$s">%3$s</ul>',85			);86		} else {87			$nav_menu_args = array(88				'fallback_cb' => '',89				'menu'        => $nav_menu,90			);91		}92 93		/**94		 * Filters the arguments for the Navigation Menu widget.95		 *96		 * @since 4.2.0