Setting up states and event in Flutter BLoC

event.dart

part of 'mybloc_bloc.dart';

abstract class MyblocEvent extends Equatable {
  const MyblocEvent();
}

class SubmitForm extends MyblocEvent {
  @override
  // TODO: implement props
  List<Object> get props => null;
}

main.dart

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

import 'bloc/mybloc_bloc.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: MyPage(),
    );
  }
}

class MyPage extends StatefulWidget {
  @override
  _MyPageState createState() => _MyPageState();
}

class _MyPageState extends State<MyPage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        child:
            BlocConsumer<MyblocBloc, MyblocState>(listener: (context, state) {
          if (state is FormLoaded) {
            //Nav
          }
        }, builder: (context, state) {
          if (state is FormLoading) {
            return loadingwidget();
          } else if (state is MyblocInitial) {
            return buildInitialInput();
          }
        }),
      ),
    );
  }

  Widget loadingwidget() {}
  Widget buildInitialInput() {}
}

MyblocBloc.dart

import 'dart:async';

import 'package:bloc/bloc.dart';
import 'package:equatable/equatable.dart';

part 'mybloc_event.dart';
part 'mybloc_state.dart';

class MyblocBloc extends Bloc<MyblocEvent, MyblocState> {
  @override
  MyblocState get initialState => MyblocInitial();

  @override
  Stream<MyblocState> mapEventToState(
    MyblocEvent event,
  ) async* {
    if (event is SubmitForm) {
      yield FormLoading();
      yield FormLoaded();
    } else {
      yield MyblocInitial();
    }
  }
}

States.dart

part of 'mybloc_bloc.dart';

abstract class MyblocState extends Equatable {
  const MyblocState();
}

class MyblocInitial extends MyblocState {
  List<Object> get props => [];
}

class FormLoading extends MyblocState {
  @override
  // TODO: implement props
  List<Object> get props => null;
}

class FormLoaded extends MyblocState {
  @override
  // TODO: implement props
  List<Object> get props => null;
}