protected function layered_nav_dropdown( $terms, $taxonomy, $query_type ) {
		global $wp;
		$found = false;

		if ( $taxonomy !== $this->get_current_taxonomy() ) {
			$term_counts          = $this->get_filtered_term_product_counts( wp_list_pluck( $terms, 'term_id' ), $taxonomy, $query_type );
			$_chosen_attributes   = WC_Query::get_layered_nav_chosen_attributes();
			$taxonomy_filter_name = wc_attribute_taxonomy_slug( $taxonomy );
			$taxonomy_label       = wc_attribute_label( $taxonomy );

			/* translators: %s: taxonomy name */
			$any_label      = apply_filters( 'woocommerce_layered_nav_any_label', sprintf( __( 'Any %s', 'woocommerce' ), $taxonomy_label ), $taxonomy_label, $taxonomy );
			$multiple       = 'or' === $query_type;
			$current_values = isset( $_chosen_attributes[ $taxonomy ]['terms'] ) ? $_chosen_attributes[ $taxonomy ]['terms'] : array();

			if ( '' === get_option( 'permalink_structure' ) ) {
				$form_action = remove_query_arg( array( 'page', 'paged' ), add_query_arg( $wp->query_string, '', home_url( $wp->request ) ) );
			} else {
				$form_action = preg_replace( '%\/page/[0-9]+%', '', home_url( trailingslashit( $wp->request ) ) );
			}

			echo '<form method="get" action="' . esc_url( $form_action ) . '" class="woocommerce-widget-layered-nav-dropdown">';
			echo '<select class="woocommerce-widget-layered-nav-dropdown dropdown_layered_nav_' . esc_attr( $taxonomy_filter_name ) . '"' . ( $multiple ? 'multiple="multiple"' : '' ) . '>';
			echo '<option value="">' . esc_html( $any_label ) . '</option>';

			foreach ( $terms as $term ) {

				// If on a term page, skip that term in widget list.
				if ( $term->term_id === $this->get_current_term_id() ) {
					continue;
				}

				// Get count based on current view.
				$option_is_set = in_array( $term->slug, $current_values, true );
				$count         = isset( $term_counts[ $term->term_id ] ) ? $term_counts[ $term->term_id ] : 0;

				// Only show options with count > 0.
				if ( 0 < $count ) {
					$found = true;
				} elseif ( 0 === $count && ! $option_is_set ) {
					continue;
				}

				echo '<option value="' . esc_attr( urldecode( $term->slug ) ) . '" ' . selected( $option_is_set, true, false ) . '>' . esc_html( $term->name ) . '</option>';
			}

			echo '</select>';

			if ( $multiple ) {
				echo '<button class="woocommerce-widget-layered-nav-dropdown__submit" type="submit" value="' . esc_attr__( 'Apply', 'woocommerce' ) . '">' . esc_html__( 'Apply', 'woocommerce' ) . '</button>';
			}

			if ( 'or' === $query_type ) {
				echo '<input type="hidden" name="query_type_' . esc_attr( $taxonomy_filter_name ) . '" value="or" />';
			}

			echo '<input type="hidden" name="filter_' . esc_attr( $taxonomy_filter_name ) . '" value="' . esc_attr( implode( ',', $current_values ) ) . '" />';
			echo wc_query_string_form_fields( null, array( 'filter_' . $taxonomy_filter_name, 'query_type_' . $taxonomy_filter_name ), '', true ); // @codingStandardsIgnoreLine
			echo '</form>';

			wc_enqueue_js(
				"
				// Update value on change.
				jQuery( '.dropdown_layered_nav_" . esc_js( $taxonomy_filter_name ) . "' ).change( function() {
					var slug = jQuery( this ).val();
					jQuery( ':input[name=\"filter_" . esc_js( $taxonomy_filter_name ) . "\"]' ).val( slug );

					// Submit form on change if standard dropdown.
					if ( ! jQuery( this ).attr( 'multiple' ) ) {
						jQuery( this ).closest( 'form' ).submit();
					}
				});

				// Use Select2 enhancement if possible
				if ( jQuery().selectWoo ) {
					var wc_layered_nav_select = function() {
						jQuery( '.dropdown_layered_nav_" . esc_js( $taxonomy_filter_name ) . "' ).selectWoo( {
							placeholder: decodeURIComponent('" . rawurlencode( (string) wp_specialchars_decode( $any_label ) ) . "'),
							minimumResultsForSearch: 5,
							width: '100%',
							allowClear: " . ( $multiple ? 'false' : 'true' ) . ",
							language: {
								noResults: function() {
									return '" . esc_js( _x( 'No matches found', 'enhanced select', 'woocommerce' ) ) . "';
								}
							}
						} );
					};
					wc_layered_nav_select();
				}
			"
			);
		}

		return $found;
	}