import 'package:intl/intl.dart'; final formater = new DateFormat('hh:mm'); class Message { Message({this.text, this.type = MessageType.normal}) : time = DateTime.now(); final String? text; final DateTime time; final MessageType type; String get timeString => formater.format(time); static Message warn({String? text}) => Message( text: text, type: MessageType.warning, ); } enum MessageType { normal, warning, }