75 lines
2.2 KiB
Dart
75 lines
2.2 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import '../../model/account_data.dart';
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import '../../theming/light_app_theme.dart';
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import '../../widget/app_progress_indicator.dart';
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/// Shown while the stored session is still being read. Normally gone within
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/// a second; after [hintDelay] it offers a way out so a keychain that keeps
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/// failing can never trap the user on a spinner.
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class AccountLoadingScreen extends StatefulWidget {
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const AccountLoadingScreen({super.key});
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static const Duration hintDelay = Duration(seconds: 15);
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@override
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State<AccountLoadingScreen> createState() => _AccountLoadingScreenState();
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}
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class _AccountLoadingScreenState extends State<AccountLoadingScreen> {
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Timer? _hintTimer;
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bool _showHint = false;
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@override
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void initState() {
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super.initState();
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_hintTimer = Timer(AccountLoadingScreen.hintDelay, () {
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if (mounted) setState(() => _showHint = true);
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});
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}
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@override
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void dispose() {
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_hintTimer?.cancel();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) => Scaffold(
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backgroundColor: LightAppTheme.marianumRed,
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body: Center(
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 32),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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const AppProgressIndicator.large(color: Colors.white),
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const SizedBox(height: 16),
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const Text(
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'Konto wird geladen…',
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style: TextStyle(color: Colors.white),
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),
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if (_showHint) ...[
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const SizedBox(height: 32),
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const Text(
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'Das dauert länger als üblich. Die gespeicherte Anmeldung '
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'konnte noch nicht gelesen werden.',
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textAlign: TextAlign.center,
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style: TextStyle(color: Colors.white70),
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),
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const SizedBox(height: 8),
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TextButton(
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onPressed: AccountData().abandonLoad,
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style: TextButton.styleFrom(foregroundColor: Colors.white),
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child: const Text('Zur Anmeldung'),
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),
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],
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],
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),
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),
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),
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);
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}
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