public function widget( $args, $instance ) {
		if ( ! is_shop() && ! is_product_taxonomy() ) {
			return;
		}

		if ( ! WC()->query->get_main_query()->post_count ) {
			return;
		}

		ob_start();

		$found         = false;
		$rating_filter = isset( $_GET['rating_filter'] ) ? array_filter( array_map( 'absint', explode( ',', wp_unslash( $_GET['rating_filter'] ) ) ) ) : array(); // WPCS: input var ok, CSRF ok, sanitization ok.
		$base_link     = remove_query_arg( 'paged', $this->get_current_page_url() );

		$this->widget_start( $args, $instance );

		echo '<ul>';

		for ( $rating = 5; $rating >= 1; $rating-- ) {
			$count = $this->get_filtered_product_count( $rating );
			if ( empty( $count ) ) {
				continue;
			}
			$found = true;
			$link  = $base_link;

			if ( in_array( $rating, $rating_filter, true ) ) {
				$link_ratings = implode( ',', array_diff( $rating_filter, array( $rating ) ) );
			} else {
				$link_ratings = implode( ',', array_merge( $rating_filter, array( $rating ) ) );
			}

			$class       = in_array( $rating, $rating_filter, true ) ? 'wc-layered-nav-rating chosen' : 'wc-layered-nav-rating';
			$link        = apply_filters( 'woocommerce_rating_filter_link', $link_ratings ? add_query_arg( 'rating_filter', $link_ratings, $link ) : remove_query_arg( 'rating_filter' ) );
			$rating_html = wc_get_star_rating_html( $rating );
			$count_html  = wp_kses(
				apply_filters( 'woocommerce_rating_filter_count', "({$count})", $count, $rating ),
				array(
					'em'     => array(),
					'span'   => array(),
					'strong' => array(),
				)
			);

			printf( '<li class="%s"><a href="%s"><span class="star-rating">%s</span> %s</a></li>', esc_attr( $class ), esc_url( $link ), $rating_html, $count_html ); // WPCS: XSS ok.
		}

		echo '</ul>';

		$this->widget_end( $args );

		if ( ! $found ) {
			ob_end_clean();
		} else {
			echo ob_get_clean(); // WPCS: XSS ok.
		}
	}