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

void main() {
  return runApp(TestPage());
}

//リスト4.49
class TestPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'ダイアログ',
      home: Scaffold(
        appBar: AppBar(title: Text('ダイアログ')),
        body: DialogSample()
      )
    );
  }
}

class DialogSample extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Center(
      child: TextButton(
        onPressed: () => showDialog<void>(
          context: context,
          builder: (childContext) {
            return SimpleDialog(
              title: Text('ダイアログ'),
              children: <Widget>[
                SimpleDialogOption(
                  onPressed: () {},
                  child: Text('アイテム1')
                ),
                SimpleDialogOption(
                  onPressed: () {},
                  child: Text('アイテム2')
                ),
                SimpleDialogOption(
                  onPressed: () {},
                  child: Text('アイテム3')
                )
              ]
            );
          }
        ),
        child: Text('ダイアログ表示')
      )
    );
  }
}