WP_Widget_Pages::widget() WordPress Method

	public function widget( $args, $instance ) {
		$default_title = __( 'Pages' );
		$title         = ! empty( $instance['title'] ) ? $instance['title'] : $default_title;

		/**
		 * Filters the widget title.
		 *
		 * @since 2.6.0
		 *
		 * @param string $title    The widget title. Default 'Pages'.
		 * @param array  $instance Array of settings for the current widget.
		 * @param mixed  $id_base  The widget ID.
		 */
		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );

		$sortby  = empty( $instance['sortby'] ) ? 'menu_order' : $instance['sortby'];
		$exclude = empty( $instance['exclude'] ) ? '' : $instance['exclude'];

		if ( 'menu_order' === $sortby ) {
			$sortby = 'menu_order, post_title';
		}

		$output = wp_list_pages(
			/**
			 * Filters the arguments for the Pages widget.
			 *
			 * @since 2.8.0
			 * @since 4.9.0 Added the `$instance` parameter.
			 *
			 * @see wp_list_pages()
			 *
			 * @param array $args     An array of arguments to retrieve the pages list.
			 * @param array $instance Array of settings for the current widget.
			 */
			apply_filters(
				'widget_pages_args',
				array(
					'title_li'    => '',
					'echo'        => 0,
					'sort_column' => $sortby,
					'exclude'     => $exclude,
				),
				$instance
			)
		);

		if ( ! empty( $output ) ) {
			echo $args['before_widget'];
			if ( $title ) {
				echo $args['before_title'] . $title . $args['after_title'];
			}

			$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';

			/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */
			$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;
				echo '<nav aria-label="' . esc_attr( $aria_label ) . '">';
			}
			?>

			<ul>
				<?php echo $output; ?>
			</ul>

			<?php
			if ( 'html5' === $format ) {
				echo '</nav>';
			}

			echo $args['after_widget'];
		}
	}