| // 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. |
| |
| // Flutter code sample for LogicalKeySet |
| |
| import 'package:flutter/material.dart'; |
| import 'package:flutter/services.dart'; |
| |
| void main() => runApp(const MyApp()); |
| |
| class MyApp extends StatelessWidget { |
| const MyApp({super.key}); |
| |
| static const String _title = 'Flutter Code Sample'; |
| |
| @override |
| Widget build(BuildContext context) { |
| return MaterialApp( |
| title: _title, |
| home: Scaffold( |
| appBar: AppBar(title: const Text(_title)), |
| body: const Center( |
| child: MyStatefulWidget(), |
| ), |
| ), |
| ); |
| } |
| } |
| |
| class IncrementIntent extends Intent { |
| const IncrementIntent(); |
| } |
| |
| class MyStatefulWidget extends StatefulWidget { |
| const MyStatefulWidget({super.key}); |
| |
| @override |
| State<MyStatefulWidget> createState() => _MyStatefulWidgetState(); |
| } |
| |
| class _MyStatefulWidgetState extends State<MyStatefulWidget> { |
| int count = 0; |
| |
| @override |
| Widget build(BuildContext context) { |
| return Shortcuts( |
| shortcuts: <ShortcutActivator, Intent>{ |
| LogicalKeySet(LogicalKeyboardKey.keyC, LogicalKeyboardKey.controlLeft): |
| const IncrementIntent(), |
| }, |
| child: Actions( |
| actions: <Type, Action<Intent>>{ |
| IncrementIntent: CallbackAction<IncrementIntent>( |
| onInvoke: (IncrementIntent intent) => setState(() { |
| count = count + 1; |
| }), |
| ), |
| }, |
| child: Focus( |
| autofocus: true, |
| child: Column( |
| children: <Widget>[ |
| const Text('Add to the counter by pressing Ctrl+C'), |
| Text('count: $count'), |
| ], |
| ), |
| ), |
| ), |
| ); |
| } |
| } |