// 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 [CharacterActivator]. import 'package:flutter/material.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 HelpMenuIntent extends Intent { const HelpMenuIntent(); } class MyStatefulWidget extends StatefulWidget { const MyStatefulWidget({super.key}); @override State<MyStatefulWidget> createState() => _MyStatefulWidgetState(); } class _MyStatefulWidgetState extends State<MyStatefulWidget> { @override Widget build(BuildContext context) { return Shortcuts( shortcuts: const <ShortcutActivator, Intent>{ CharacterActivator('?'): HelpMenuIntent(), }, child: Actions( actions: <Type, Action<Intent>>{ HelpMenuIntent: CallbackAction<HelpMenuIntent>( onInvoke: (HelpMenuIntent intent) { ScaffoldMessenger.of(context).showSnackBar( const SnackBar(content: Text('Keep calm and carry on!')), ); return null; }, ), }, child: Focus( autofocus: true, child: Column( children: const <Widget>[ Text('Press question mark for help'), ], ), ), ), ); } }