| // 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 [MaterialStateOutlinedBorder]. |
| |
| void main() => runApp(const MaterialStateOutlinedBorderExampleApp()); |
| |
| class MaterialStateOutlinedBorderExampleApp extends StatelessWidget { |
| const MaterialStateOutlinedBorderExampleApp({super.key}); |
| |
| @override |
| Widget build(BuildContext context) { |
| return const MaterialApp( |
| home: MaterialStateOutlinedBorderExample(), |
| ); |
| } |
| } |
| |
| class SelectedBorder extends RoundedRectangleBorder implements MaterialStateOutlinedBorder { |
| const SelectedBorder(); |
| |
| @override |
| OutlinedBorder? resolve(Set<MaterialState> states) { |
| if (states.contains(MaterialState.selected)) { |
| return const RoundedRectangleBorder(); |
| } |
| return null; // Defer to default value on the theme or widget. |
| } |
| } |
| |
| class MaterialStateOutlinedBorderExample extends StatefulWidget { |
| const MaterialStateOutlinedBorderExample({super.key}); |
| |
| @override |
| State<MaterialStateOutlinedBorderExample> createState() => _MaterialStateOutlinedBorderExampleState(); |
| } |
| |
| class _MaterialStateOutlinedBorderExampleState extends State<MaterialStateOutlinedBorderExample> { |
| bool isSelected = true; |
| |
| @override |
| Widget build(BuildContext context) { |
| return Material( |
| child: FilterChip( |
| label: const Text('Select chip'), |
| selected: isSelected, |
| onSelected: (bool value) { |
| setState(() { |
| isSelected = value; |
| }); |
| }, |
| shape: const SelectedBorder(), |
| ), |
| ); |
| } |
| } |