W3cubDocs

/WordPress

WP_Nav_Menu_Widget::widget( array $args, array $instance )

Outputs the content for the current Navigation Menu widget instance.

Parameters

$args

(array) (Required) Display arguments including 'before_title', 'after_title', 'before_widget', and 'after_widget'.

$instance

(array) (Required) Settings for the current Navigation Menu widget instance.

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'];
	}

Uses

Uses Description
wp-includes/widgets/class-wp-nav-menu-widget.php: navigation_widgets_format

Filters the HTML format of widgets with navigation links.
wp-includes/widgets/class-wp-nav-menu-widget.php: widget_nav_menu_args

Filters the arguments for the Navigation Menu widget.
wp-includes/theme.php: current_theme_supports()

Checks a theme’s support for a given feature.
wp-includes/l10n.php: __()

Retrieve the translation of $text.
wp-includes/widgets/class-wp-widget-pages.php: widget_title

Filters the widget title.
wp-includes/plugin.php: apply_filters()

Calls the callback functions that have been added to a filter hook.
wp-includes/nav-menu-template.php: wp_nav_menu()

Displays a navigation menu.
wp-includes/nav-menu.php: wp_get_nav_menu_object()

Returns a navigation menu object.

Changelog

Version Description
3.0.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_nav_menu_widget/widget