Flutter TextField events

main.dart

// ignore_for_file: annotate_overrides
// ignore_for_file: prefer_const_constructors
// ignore_for_file: prefer_const_literals_to_create_immutables
// ignore_for_file: unused_local_variable
// ignore_for_file: library_private_types_in_public_api

import 'package:flutter/material.dart';

const Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Blah(),
        ),
      ),
    );
  }
}

class Blah extends StatefulWidget {
  _BlahState createState() => _BlahState();
}

class _BlahState extends State<Blah> {
  var onValue = <String>[];

  Widget build(BuildContext context) {
    return Column(
      children: [
        Text('TextField'),        
        Text('Interactive view of onChanged, onSubmitted & onEditingComplete'),
        Text('Press enter key to trigger onSubmitted & onEditingComplete'),
        Text('More: https://stackoverflow.com/questions/63690311/flutter-textfield-difference-between-onedittingcomplete-and-onsubmitted'),
        Text(' '),
        TextField(
          onChanged: (x) => setState(() => onValue.insert(0, "onChanged")),
          onSubmitted: (x) => setState(() => onValue.insert(0, "onSubmitted")),
          onEditingComplete: () =>
              setState(() => onValue.insert(0, "onEditingComplete")),
        ),
        ...onValue.map((x) => Text(x)),
      ],
    );
  }
}