122 lines
3.4 KiB
Dart
122 lines
3.4 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:fluffychat/generated/l10n/l10n.dart';
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import 'package:fluffychat/config/themes.dart';
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import 'package:fluffychat/widgets/app_lock.dart';
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class LockScreen extends StatefulWidget {
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const LockScreen({super.key});
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@override
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State<LockScreen> createState() => _LockScreenState();
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}
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class _LockScreenState extends State<LockScreen> {
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String? _errorText;
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int _coolDownSeconds = 5;
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bool _inputBlocked = false;
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final TextEditingController _textEditingController = TextEditingController();
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void tryUnlock(String text) async {
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setState(() {
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_errorText = null;
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});
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if (text.length < 4) return;
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final enteredPin = int.tryParse(text);
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if (enteredPin == null || text.length != 4) {
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setState(() {
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_errorText = L10n.of(context).invalidInput;
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});
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_textEditingController.clear();
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return;
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}
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if (AppLock.of(context).unlock(enteredPin.toString())) {
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setState(() {
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_inputBlocked = false;
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_errorText = null;
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});
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_textEditingController.clear();
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return;
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}
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setState(() {
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_errorText = L10n.of(context).wrongPinEntered(_coolDownSeconds);
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_inputBlocked = true;
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});
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Future.delayed(Duration(seconds: _coolDownSeconds)).then((_) {
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setState(() {
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_inputBlocked = false;
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_coolDownSeconds *= 2;
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_errorText = null;
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});
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});
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_textEditingController.clear();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text(L10n.of(context).pleaseEnterYourPin),
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centerTitle: true,
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),
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extendBodyBehindAppBar: true,
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body: Center(
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: ConstrainedBox(
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constraints: const BoxConstraints(
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maxWidth: FluffyThemes.columnWidth,
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),
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child: ListView(
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shrinkWrap: true,
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children: [
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Center(
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child: Image.asset(
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'assets/info-logo.png',
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width: 256,
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),
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),
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TextField(
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controller: _textEditingController,
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textInputAction: TextInputAction.done,
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keyboardType: TextInputType.number,
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obscureText: true,
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autofocus: true,
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textAlign: TextAlign.center,
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readOnly: _inputBlocked,
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onChanged: tryUnlock,
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onSubmitted: tryUnlock,
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style: const TextStyle(fontSize: 40),
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inputFormatters: [
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LengthLimitingTextInputFormatter(4),
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],
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decoration: InputDecoration(
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errorText: _errorText,
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hintText: '****',
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suffix: IconButton(
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icon: const Icon(Icons.lock_open_outlined),
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onPressed: () => tryUnlock(_textEditingController.text),
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),
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),
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),
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if (_inputBlocked)
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const Padding(
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padding: EdgeInsets.all(8.0),
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child: LinearProgressIndicator(),
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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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}
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