public static function get_layered_nav_chosen_attributes() {
		if ( ! is_array( self::$_chosen_attributes ) ) {
			self::$_chosen_attributes = array();

			if ( ! empty( $_GET ) ) { // WPCS: input var ok, CSRF ok.
				foreach ( $_GET as $key => $value ) { // WPCS: input var ok, CSRF ok.
					if ( 0 === strpos( $key, 'filter_' ) ) {
						$attribute    = wc_sanitize_taxonomy_name( str_replace( 'filter_', '', $key ) );
						$taxonomy     = wc_attribute_taxonomy_name( $attribute );
						$filter_terms = ! empty( $value ) ? explode( ',', wc_clean( wp_unslash( $value ) ) ) : array();

						if ( empty( $filter_terms ) || ! taxonomy_exists( $taxonomy ) || ! wc_attribute_taxonomy_id_by_name( $attribute ) ) {
							continue;
						}

						$query_type                                     = ! empty( $_GET[ 'query_type_' . $attribute ] ) && in_array( $_GET[ 'query_type_' . $attribute ], array( 'and', 'or' ), true ) ? wc_clean( wp_unslash( $_GET[ 'query_type_' . $attribute ] ) ) : ''; // WPCS: sanitization ok, input var ok, CSRF ok.
						self::$_chosen_attributes[ $taxonomy ]['terms'] = array_map( 'sanitize_title', $filter_terms ); // Ensures correct encoding.
						self::$_chosen_attributes[ $taxonomy ]['query_type'] = $query_type ? $query_type : apply_filters( 'woocommerce_layered_nav_default_query_type', 'and' );
					}
				}
			}
		}
		return self::$_chosen_attributes;
	}