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449f4a6673
* Update project.pbxproj files to say Flutter rather than Chromium Also, the templates now have an empty organization so that we don't cause people to give their apps a Flutter copyright. * Update the copyright notice checker to require a standard notice on all files * Update copyrights on Dart files. (This was a mechanical commit.) * Fix weird license headers on Dart files that deviate from our conventions; relicense Shrine. Some were already marked "The Flutter Authors", not clear why. Their dates have been normalized. Some were missing the blank line after the license. Some were randomly different in trivial ways for no apparent reason (e.g. missing the trailing period). * Clean up the copyrights in non-Dart files. (Manual edits.) Also, make sure templates don't have copyrights. * Fix some more ORGANIZATIONNAMEs
76 lines
2.1 KiB
Dart
76 lines
2.1 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:url_launcher/url_launcher.dart';
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typedef UpdateUrlFetcher = Future<String> Function();
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class Updater extends StatefulWidget {
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const Updater({ @required this.updateUrlFetcher, this.child, Key key })
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: assert(updateUrlFetcher != null),
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super(key: key);
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final UpdateUrlFetcher updateUrlFetcher;
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final Widget child;
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@override
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State createState() => UpdaterState();
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}
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class UpdaterState extends State<Updater> {
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@override
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void initState() {
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super.initState();
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_checkForUpdates();
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}
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static DateTime _lastUpdateCheck;
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Future<void> _checkForUpdates() async {
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// Only prompt once a day
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if (_lastUpdateCheck != null &&
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DateTime.now().difference(_lastUpdateCheck) < const Duration(days: 1)) {
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return; // We already checked for updates recently
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}
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_lastUpdateCheck = DateTime.now();
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final String updateUrl = await widget.updateUrlFetcher();
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if (updateUrl != null) {
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final bool wantsUpdate = await showDialog<bool>(context: context, builder: _buildDialog);
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if (wantsUpdate != null && wantsUpdate)
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launch(updateUrl);
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}
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}
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Widget _buildDialog(BuildContext context) {
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final ThemeData theme = Theme.of(context);
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final TextStyle dialogTextStyle =
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theme.textTheme.subhead.copyWith(color: theme.textTheme.caption.color);
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return AlertDialog(
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title: const Text('Update Flutter Gallery?'),
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content: Text('A newer version is available.', style: dialogTextStyle),
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actions: <Widget>[
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FlatButton(
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child: const Text('NO THANKS'),
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onPressed: () {
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Navigator.pop(context, false);
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},
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),
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FlatButton(
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child: const Text('UPDATE'),
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onPressed: () {
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Navigator.pop(context, true);
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},
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),
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],
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);
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}
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@override
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Widget build(BuildContext context) => widget.child;
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}
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