flutter/examples/api/lib/widgets/focus_manager/focus_node.unfocus.0.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/material.dart';

/// Flutter code sample for [FocusNode.unfocus].

void main() => runApp(const UnfocusExampleApp());

class UnfocusExampleApp extends StatelessWidget {
  const UnfocusExampleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: UnfocusExample(),
    );
  }
}

class UnfocusExample extends StatefulWidget {
  const UnfocusExample({super.key});

  @override
  State<UnfocusExample> createState() => _UnfocusExampleState();
}

class _UnfocusExampleState extends State<UnfocusExample> {
  UnfocusDisposition disposition = UnfocusDisposition.scope;

  @override
  Widget build(BuildContext context) {
    return Material(
      child: ColoredBox(
        color: Colors.white,
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Wrap(
              children: List<Widget>.generate(4, (int index) {
                return const SizedBox(
                  width: 200,
                  child: Padding(
                    padding: EdgeInsets.all(8.0),
                    child: TextField(
                      decoration: InputDecoration(border: OutlineInputBorder()),
                    ),
                  ),
                );
              }),
            ),
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceAround,
              children: <Widget>[
                ...List<Widget>.generate(UnfocusDisposition.values.length, (int index) {
                  return Row(
                    mainAxisSize: MainAxisSize.min,
                    children: <Widget>[
                      Radio<UnfocusDisposition>(
                        groupValue: disposition,
                        onChanged: (UnfocusDisposition? value) {
                          setState(() {
                            if (value != null) {
                              disposition = value;
                            }
                          });
                        },
                        value: UnfocusDisposition.values[index],
                      ),
                      Text(UnfocusDisposition.values[index].name),
                    ],
                  );
                }),
                OutlinedButton(
                  child: const Text('UNFOCUS'),
                  onPressed: () {
                    setState(() {
                      primaryFocus!.unfocus(disposition: disposition);
                    });
                  },
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}