Source
File: wp-includes/widgets/class-wp-nav-menu-widget.php
public function widget( $args, $instance ) {
// Get menu.
$nav_menu = ! empty( $instance['nav_menu'] ) ? wp_get_nav_menu_object( $instance['nav_menu'] ) : false;
if ( ! $nav_menu ) {
return;
}
$default_title = __( 'Menu' );
$title = ! empty( $instance['title'] ) ? $instance['title'] : '';
/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
echo $args['before_widget'];
if ( $title ) {
echo $args['before_title'] . $title . $args['after_title'];
}
$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';
/**
* Filters the HTML format of widgets with navigation links.
*
* @since 5.5.0
*
* @param string $format The type of markup to use in widgets with navigation links.
* Accepts 'html5', 'xhtml'.
*/
$format = apply_filters( 'navigation_widgets_format', $format );
if ( 'html5' === $format ) {
// The title may be filtered: Strip out HTML and make sure the aria-label is never empty.
$title = trim( strip_tags( $title ) );
$aria_label = $title ? $title : $default_title;
$nav_menu_args = array(
'fallback_cb' => '',
'menu' => $nav_menu,
'container' => 'nav',
'container_aria_label' => $aria_label,
'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s</ul>',
);
} else {
$nav_menu_args = array(
'fallback_cb' => '',
'menu' => $nav_menu,
);
}
/**
* Filters the arguments for the Navigation Menu widget.
*
* @since 4.2.0
* @since 4.4.0 Added the `$instance` parameter.
*
* @param array $nav_menu_args {
* An array of arguments passed to wp_nav_menu() to retrieve a navigation menu.
*
* @type callable|bool $fallback_cb Callback to fire if the menu doesn't exist. Default empty.
* @type mixed $menu Menu ID, slug, or name.
* }
* @param WP_Term $nav_menu Nav menu object for the current menu.
* @param array $args Display arguments for the current widget.
* @param array $instance Array of settings for the current widget.
*/
wp_nav_menu( apply_filters( 'widget_nav_menu_args', $nav_menu_args, $nav_menu, $args, $instance ) );
echo $args['after_widget'];
}