Daily commit

lib/bloc/message_wrapper/message_bloc.dart

@@ -0,0 +1,21 @@
+import 'package:bloc/bloc.dart';
+
+import 'message_event.dart';
+import 'message_state.dart';
+
+class MessageBloc extends Bloc<MessageEvent, MessageState> {
+  MessageBloc() : super(MessageInitialState()) {
+    on<MessageShow>(_show);
+    on<MessageHide>(_hide);
+  }
+
+  void _show(MessageShow event, Emitter<MessageState> emit) async {
+    emit(MessageShowState(message: event.message));
+    await Future.delayed(event.duration);
+    emit(MessageHideState());
+  }
+
+  void _hide(MessageHide event, Emitter<MessageState> emit) {
+    emit(MessageHideState());
+  }
+}

lib/bloc/message_wrapper/message_event.dart

@@ -0,0 +1,10 @@
+abstract class MessageEvent {}
+
+class MessageShow extends MessageEvent {
+  String message;
+  Duration duration;
+
+  MessageShow({required this.message}) : duration = Duration(seconds: 5);
+}
+
+class MessageHide extends MessageEvent {}

lib/bloc/message_wrapper/message_state.dart

@@ -0,0 +1,7 @@
+abstract class MessageState {}
+class MessageInitialState extends MessageState {}
+class MessageShowState extends MessageState {
+  String message;
+  MessageShowState({required this.message});
+}
+class MessageHideState extends MessageState {}