import 'package:flutter/material.dart';

class _Action {
  String title;
  VoidCallback callback;
  _Action(this.title, this.callback);
}

class DisplayOptionsDialog extends StatelessWidget {
  final List<_Action> _actions = [
    _Action('Blank', () {
      print('Blank screen');
    }),
    _Action('Theme', () {
      print('Theme screen');
    }),
    _Action('Desktop', () {
      print('Desktop screen');
    }),
    _Action('Show', () {
      print('Show screen');
    }),
  ];

  @override
  Widget build(BuildContext context) {
    return SimpleDialog(
      contentPadding: EdgeInsets.all(20.0),
      children: _actions
          .map((action) => OutlineButton(
                color: Colors.red,
                child: Text(action.title),
                onPressed: () {
                  action.callback();
                  Navigator.of(context).pop();
                },
              ))
          .toList(),
    );
  }
}