blob: 2da2b3dee7f9daaa60ae79fc62ef94946ffb3a49 [file] [log] [blame]
// 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 [Shortcuts].
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 DecrementIntent extends Intent {
const DecrementIntent();
}
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.arrowUp): const IncrementIntent(),
LogicalKeySet(LogicalKeyboardKey.arrowDown): const DecrementIntent(),
},
child: Actions(
actions: <Type, Action<Intent>>{
IncrementIntent: CallbackAction<IncrementIntent>(
onInvoke: (IncrementIntent intent) => setState(() {
count = count + 1;
}),
),
DecrementIntent: CallbackAction<DecrementIntent>(
onInvoke: (DecrementIntent intent) => setState(() {
count = count - 1;
}),
),
},
child: Focus(
autofocus: true,
child: Column(
children: <Widget>[
const Text('Add to the counter by pressing the up arrow key'),
const Text(
'Subtract from the counter by pressing the down arrow key'),
Text('count: $count'),
],
),
),
),
);
}
}