opt.: store

lib/app.dart

@@ -18,8 +18,8 @@ class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     setTransparentNavigationBar(context);
-    primaryColor = Color(_setting.primaryColor.fetch()!);
-    final fullScreen = _setting.fullScreen.fetch()!;
+    primaryColor = Color(_setting.primaryColor.fetch());
+    final fullScreen = _setting.fullScreen.fetch();
 
     return ValueListenableBuilder<int>(
       valueListenable: _setting.themeMode.listenable(),
@@ -28,7 +28,7 @@ class MyApp extends StatelessWidget {
         // Issue #57
         // if not [ok] -> [AMOLED] mode, use [ThemeMode.dark]
         final themeMode = isAMOLED ? ThemeMode.values[tMode] : ThemeMode.dark;
-        final locale = _setting.locale.fetch()?.toLocale;
+        final locale = _setting.locale.fetch().toLocale;
         final darkTheme = ThemeData(
           useMaterial3: true,
           brightness: Brightness.dark,

lib/core/extension/order.dart

@@ -7,7 +7,7 @@ extension OrderX<T> on Order<T> {
   void move(
     int oldIndex,
     int newIndex, {
-    StoreProperty<List<T>>? property,
+    StorePropertyBase<List<T>>? property,
     _OnMove<T>? onMove,
   }) {
     if (oldIndex == newIndex) return;
@@ -35,7 +35,7 @@ extension OrderX<T> on Order<T> {
     List<T> items,
     int o,
     int n, {
-    StoreProperty<List<T>>? property,
+    StorePropertyBase<List<T>>? property,
     _OnMove<T>? onMove,
   }) {
     if (o == n) return;

lib/core/persistant_store.dart

@@ -10,35 +10,72 @@ class PersistentStore<E> {
     box = await Hive.openBox(boxName);
     return this;
   }
-
-  StoreProperty<T> property<T>(String key, {T? defaultValue}) {
-    return StoreProperty<T>(box, key, defaultValue);
-  }
 }
 
-class StoreProperty<T> {
+abstract class StorePropertyBase<T> {
+  ValueListenable<T> listenable();
+  T fetch();
+  Future<void> put(T value);
+  Future<void> delete();
+}
+
+class StoreProperty<T> implements StorePropertyBase<T> {
   StoreProperty(this._box, this._key, this.defaultValue);
 
   final Box _box;
   final String _key;
-  T? defaultValue;
+  T defaultValue;
 
+  @override
   ValueListenable<T> listenable() {
     return PropertyListenable<T>(_box, _key, defaultValue);
   }
 
-  T? fetch() {
-    return _box.get(_key, defaultValue: defaultValue);
-  }
-
-  dynamic fetchRaw() {
-    return _box.get(_key, defaultValue: defaultValue);
+  @override
+  T fetch() {
+    return _box.get(_key, defaultValue: defaultValue)!;
   }
 
+  @override
   Future<void> put(T value) {
     return _box.put(_key, value);
   }
 
+  @override
+  Future<void> delete() {
+    return _box.delete(_key);
+  }
+}
+
+class StoreListProperty<T> implements StorePropertyBase<List<T>> {
+  StoreListProperty(this._box, this._key, this.defaultValue);
+
+  final Box _box;
+  final String _key;
+  List<T> defaultValue;
+
+  @override
+  ValueListenable<List<T>> listenable() {
+    return PropertyListenable<List<T>>(_box, _key, defaultValue);
+  }
+
+  @override
+  List<T> fetch() {
+    final val = _box.get(_key, defaultValue: defaultValue)!;
+
+    if (val is! List) {
+      throw Exception('StoreListProperty("$_key") is: ${val.runtimeType}');
+    }
+
+    return List<T>.from(val);
+  }
+
+  @override
+  Future<void> put(List<T> value) {
+    return _box.put(_key, value);
+  }
+
+  @override
   Future<void> delete() {
     return _box.delete(_key);
   }

lib/core/utils/ui.dart

@@ -76,7 +76,7 @@ void showLoadingDialog(BuildContext context, {bool barrierDismiss = false}) {
 
 Widget buildSwitch(
   BuildContext context,
-  StoreProperty<bool> prop, {
+  StorePropertyBase<bool> prop, {
   void Function(bool)? func,
 }) {
   return ValueListenableBuilder(
@@ -115,8 +115,8 @@ String tabTitleName(BuildContext context, AppTab tab) {
   }
 }
 
-Future<void> loadFontFile(String? localPath) async {
-  if (localPath == null) return;
+Future<void> loadFontFile(String localPath) async {
+  if (localPath.isEmpty) return;
   final name = getFileName(localPath);
   if (name == null) return;
   var fontLoader = FontLoader(name);

lib/data/model/server/try_limiter.dart

@@ -5,7 +5,7 @@ class TryLimiter {
   final Map<String, int> _triedTimes = {};
 
   bool canTry(String id) {
-    final maxCount = locator<SettingStore>().maxRetryCount.fetch()!;
+    final maxCount = locator<SettingStore>().maxRetryCount.fetch();
     if (maxCount <= 0) {
       return true;
     }

lib/data/provider/server.dart

@@ -49,7 +49,7 @@ class ServerProvider extends ChangeNotifier {
       _servers[spi.id] = genServer(spi);
     }
     final serverOrder_ = _settingStore.serverOrder.fetch();
-    if (serverOrder_ != null) {
+    if (serverOrder_.isNotEmpty) {
       spis.reorder(
         order: serverOrder_,
         finder: (n, id) => n.id == id,
@@ -112,7 +112,7 @@ class ServerProvider extends ChangeNotifier {
   }
 
   Future<void> startAutoRefresh() async {
-    final duration = _settingStore.serverStatusUpdateInterval.fetch()!;
+    final duration = _settingStore.serverStatusUpdateInterval.fetch();
     stopAutoRefresh();
     if (duration == 0) return;
     _timer = Timer.periodic(Duration(seconds: duration), (_) async {

lib/data/provider/snippet.dart

@@ -21,7 +21,7 @@ class SnippetProvider extends ChangeNotifier {
   void loadData() {
     _snippets = _store.fetch();
     final order = _setting.snippetOrder.fetch();
-    if (order != null) {
+    if (order.isNotEmpty) {
       final surplus = _snippets.reorder(
         order: order,
         finder: (n, name) => n.name == name,

lib/data/provider/virtual_keyboard.dart

@@ -42,7 +42,7 @@ class VirtualKeyboard extends TerminalInputHandler with ChangeNotifier {
       ctrl: event.ctrl || ctrl,
       alt: event.alt || alt,
     );
-    if (_setting.sshVirtualKeyAutoOff.fetch()!) {
+    if (_setting.sshVirtualKeyAutoOff.fetch()) {
       reset(e);
     }
     return defaultInputHandler.call(e);

lib/data/res/color.dart

@@ -4,7 +4,7 @@ import 'package:toolbox/locator.dart';
 
 import '../model/app/dynamic_color.dart';
 
-Color primaryColor = Color(locator<SettingStore>().primaryColor.fetch()!);
+Color primaryColor = Color(locator<SettingStore>().primaryColor.fetch());
 
 final contentColor = DynamicColor(Colors.black87, Colors.white70);
 final bgColor = DynamicColor(Colors.white, Colors.black);

lib/data/store/setting.dart

@@ -1,7 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:toolbox/core/persistant_store.dart';
 import 'package:toolbox/core/utils/platform.dart';
-import 'package:toolbox/data/model/ssh/virtual_key.dart';
 
 import '../model/app/net_view.dart';
 import '../res/default.dart';
@@ -9,112 +8,142 @@ import '../res/default.dart';
 class SettingStore extends PersistentStore {
   Map<String, dynamic> toJson() => {for (var e in box.keys) e: box.get(e)};
 
-  StoreProperty<int> get primaryColor => property<int>(
+  late final primaryColor = StoreProperty(
+    box,
     'primaryColor',
-        defaultValue: 4287106639,
+    4287106639,
   );
 
-  StoreProperty<int> get serverStatusUpdateInterval => property(
+  late final serverStatusUpdateInterval = StoreProperty(
+    box,
     'serverStatusUpdateInterval',
-        defaultValue: defaultUpdateInterval,
+    defaultUpdateInterval,
   );
 
   // Lanch page idx
-  StoreProperty<int> get launchPage => property(
+  late final launchPage = StoreProperty(
+    box,
     'launchPage',
-        defaultValue: defaultLaunchPageIdx,
+    defaultLaunchPageIdx,
   );
 
   // Version of store db
-  StoreProperty<int> get storeVersion =>
-      property('storeVersion', defaultValue: 0);
+  late final storeVersion = StoreProperty(box, 'storeVersion', 0);
 
-  StoreProperty<int> get termColorIdx =>
-      property('termColorIdx', defaultValue: 0);
+  late final termColorIdx = StoreProperty(box, 'termColorIdx', 0);
 
   // Max retry count when connect to server
-  StoreProperty<int> get maxRetryCount =>
-      property('maxRetryCount', defaultValue: 2);
+  late final maxRetryCount = StoreProperty(box, 'maxRetryCount', 2);
 
   // Night mode: 0 -> auto, 1 -> light, 2 -> dark
-  StoreProperty<int> get themeMode => property('themeMode', defaultValue: 0);
+  late final themeMode = StoreProperty(box, 'themeMode', 0);
 
   // Font file path
-  StoreProperty<String> get fontPath => property('fontPath');
+  late final fontPath = StoreProperty(box, 'fontPath', '');
 
   // Backgroud running (Android)
-  StoreProperty<bool> get bgRun => property('bgRun', defaultValue: isAndroid);
+  late final bgRun = StoreProperty(box, 'bgRun', isAndroid);
 
   // Server order
-  StoreProperty<List<String>> get serverOrder =>
-      property('serverOrder', defaultValue: null);
+  late final serverOrder = StoreListProperty<String>(box, 'serverOrder', []);
 
-  StoreProperty<List<String>> get snippetOrder => property(
-        'snippetOrder',
-        defaultValue: null,
-      );
+  late final snippetOrder = StoreListProperty<String>(box, 'snippetOrder', []);
 
   // Server details page cards order
-  StoreProperty<List<String>> get detailCardOrder =>
-      property('detailCardPrder', defaultValue: defaultDetailCardOrder);
+  late final detailCardOrder =
+      StoreListProperty(box, 'detailCardPrder', defaultDetailCardOrder);
 
   // SSH term font size
-  StoreProperty<double> get termFontSize =>
-      property('termFontSize', defaultValue: 13);
+  late final termFontSize = StoreProperty(box, 'termFontSize', 13.0);
 
   // Server detail disk ignore path
-  StoreProperty<List<String>> get diskIgnorePath =>
-      property('diskIgnorePath', defaultValue: defaultDiskIgnorePath);
+  late final diskIgnorePath =
+      StoreListProperty(box, 'diskIgnorePath', defaultDiskIgnorePath);
 
   // Locale
-  StoreProperty<String> get locale => property('locale', defaultValue: null);
+  late final locale = StoreProperty<String>(box, 'locale', '');
 
   // SSH virtual key (ctrl | alt) auto turn off
-  StoreProperty<bool> get sshVirtualKeyAutoOff =>
-      property('sshVirtualKeyAutoOff', defaultValue: true);
+  late final sshVirtualKeyAutoOff =
+      StoreProperty(box, 'sshVirtualKeyAutoOff', true);
 
-  StoreProperty<double> get editorFontSize =>
-      property('editorFontSize', defaultValue: 13);
+  late final editorFontSize = StoreProperty(box, 'editorFontSize', 13.0);
 
   // Editor theme
-  StoreProperty<String> get editorTheme =>
-      property('editorTheme', defaultValue: defaultEditorTheme);
+  late final editorTheme = StoreProperty(
+    box,
+    'editorTheme',
+    defaultEditorTheme,
+  );
 
-  StoreProperty<String> get editorDarkTheme =>
-      property('editorDarkTheme', defaultValue: defaultEditorDarkTheme);
+  late final editorDarkTheme = StoreProperty(
+    box,
+    'editorDarkTheme',
+    defaultEditorDarkTheme,
+  );
 
-  StoreProperty<bool> get fullScreen =>
-      property('fullScreen', defaultValue: false);
+  late final fullScreen = StoreProperty(
+    box,
+    'fullScreen',
+    false,
+  );
 
-  StoreProperty<bool> get fullScreenJitter =>
-      property('fullScreenJitter', defaultValue: true);
+  late final fullScreenJitter = StoreProperty(
+    box,
+    'fullScreenJitter',
+    true,
+  );
 
-  StoreProperty<int> get fullScreenRotateQuarter =>
-      property('fullScreenRotateQuarter', defaultValue: 1);
+  late final fullScreenRotateQuarter = StoreProperty(
+    box,
+    'fullScreenRotateQuarter',
+    1,
+  );
 
-  StoreProperty<int> get keyboardType =>
-      property('keyboardType', defaultValue: TextInputType.text.index);
+  late final keyboardType = StoreProperty(
+    box,
+    'keyboardType',
+    TextInputType.text.index,
+  );
 
-  StoreProperty<List<VirtKey>> get sshVirtKeys =>
-      property('sshVirtKeys', defaultValue: defaultSSHVirtKeys);
+  late final sshVirtKeys = StoreListProperty(
+    box,
+    'sshVirtKeys',
+    defaultSSHVirtKeys,
+  );
 
-  StoreProperty<NetViewType> get netViewType =>
-      property('netViewType', defaultValue: NetViewType.speed);
+  late final netViewType = StoreProperty(
+    box,
+    'netViewType',
+    NetViewType.speed,
+  );
 
   // Only valid on iOS
-  StoreProperty<bool> get autoUpdateHomeWidget =>
-      property('autoUpdateHomeWidget', defaultValue: isIOS);
+  late final autoUpdateHomeWidget = StoreProperty(
+    box,
+    'autoUpdateHomeWidget',
+    isIOS,
+  );
 
-  StoreProperty<bool> get autoCheckAppUpdate =>
-      property('autoCheckAppUpdate', defaultValue: true);
+  late final autoCheckAppUpdate = StoreProperty(
+    box,
+    'autoCheckAppUpdate',
+    true,
+  );
 
   /// Display server tab function buttons on the bottom of each server card if [true]
   ///
   /// Otherwise, display them on the top of server detail page
-  StoreProperty<bool> get moveOutServerTabFuncBtns =>
-      property('moveOutServerTabFuncBtns', defaultValue: true);
+  late final moveOutServerTabFuncBtns = StoreProperty(
+    box,
+    'moveOutServerTabFuncBtns',
+    true,
+  );
 
   /// Whether use `rm -rf` to delete directory on SFTP
-  StoreProperty<bool> get sftpRmrfDir =>
-      property('sftpRmrfDir', defaultValue: true);
+  late final sftpRmrfDir = StoreProperty(
+    box,
+    'sftpRmrfDir',
+    true,
+  );
 }

lib/main.dart

@@ -96,7 +96,7 @@ Future<void> initApp() async {
   // Android only
   if (!isAndroid) return;
   // Only start service when [bgRun] is true.
-  if (locator<SettingStore>().bgRun.fetch() ?? false) {
+  if (locator<SettingStore>().bgRun.fetch()) {
     bgRunChannel.invokeMethod('startService');
   }
   // SharedPreferences is only used on Android for saving home widgets settings.

lib/view/page/full_screen.dart

@@ -45,7 +45,7 @@ class _FullScreenPageState extends State<FullScreenPage> with AfterLayoutMixin {
   void initState() {
     super.initState();
     switchStatusBar(hide: true);
-    _rotateQuarter = _setting.fullScreenRotateQuarter.fetch()!;
+    _rotateQuarter = _setting.fullScreenRotateQuarter.fetch();
     _timer = Timer.periodic(const Duration(minutes: 1), (_) {
       if (mounted) {
         setState(() {});
@@ -362,7 +362,7 @@ class _FullScreenPageState extends State<FullScreenPage> with AfterLayoutMixin {
 
   @override
   Future<void> afterFirstLayout(BuildContext context) async {
-    if (_setting.autoCheckAppUpdate.fetch()!) {
+    if (_setting.autoCheckAppUpdate.fetch()) {
       doUpdate(context);
     }
     await GetIt.I.allReady();

lib/view/page/home.dart

@@ -54,7 +54,7 @@ class _HomePageState extends State<HomePage>
     super.initState();
     switchStatusBar(hide: false);
     WidgetsBinding.instance.addObserver(this);
-    _selectIndex.value = _setting.launchPage.fetch()!;
+    _selectIndex.value = _setting.launchPage.fetch();
     // avoid index out of range
     if (_selectIndex.value >= AppTab.values.length || _selectIndex.value < 0) {
       _selectIndex.value = 0;
@@ -90,7 +90,7 @@ class _HomePageState extends State<HomePage>
         break;
       case AppLifecycleState.paused:
         // Keep running in background on Android device
-        if (isAndroid && _setting.bgRun.fetch()!) {
+        if (isAndroid && _setting.bgRun.fetch()) {
           if (_app.moveBg) {
             bgRunChannel.invokeMethod('sendToBackground');
           }
@@ -366,7 +366,7 @@ class _HomePageState extends State<HomePage>
 
   @override
   Future<void> afterFirstLayout(BuildContext context) async {
-    if (_setting.autoCheckAppUpdate.fetch()!) {
+    if (_setting.autoCheckAppUpdate.fetch()) {
       doUpdate(context);
     }
     updateHomeWidget();
@@ -379,7 +379,7 @@ class _HomePageState extends State<HomePage>
   }
 
   void updateHomeWidget() {
-    if (_setting.autoUpdateHomeWidget.fetch()!) {
+    if (_setting.autoUpdateHomeWidget.fetch()) {
       homeWidgetChannel.invokeMethod('update');
     }
   }

lib/view/page/server/detail.dart

@@ -61,7 +61,7 @@ class _ServerDetailPageState extends State<ServerDetailPage>
   @override
   void initState() {
     super.initState();
-    _cardsOrder.addAll(_setting.detailCardOrder.fetch()!);
+    _cardsOrder.addAll(_setting.detailCardOrder.fetch());
   }
 
   @override
@@ -80,7 +80,7 @@ class _ServerDetailPageState extends State<ServerDetailPage>
   }
 
   Widget _buildMainPage(Server si) {
-    final buildFuncs = !_setting.moveOutServerTabFuncBtns.fetch()!;
+    final buildFuncs = !_setting.moveOutServerTabFuncBtns.fetch();
     return Scaffold(
       appBar: CustomAppBar(
         title: Text(si.spi.name, style: textSize18),
@@ -299,7 +299,7 @@ class _ServerDetailPageState extends State<ServerDetailPage>
   Widget _buildDiskView(ServerStatus ss) {
     final disk = ss.disk;
     disk.removeWhere((e) {
-      for (final ingorePath in _setting.diskIgnorePath.fetch()!) {
+      for (final ingorePath in _setting.diskIgnorePath.fetch()) {
         if (e.path.startsWith(ingorePath)) return true;
       }
       return false;

lib/view/page/server/tab.dart

@@ -238,7 +238,7 @@ class _ServerPageState extends State<ServerPage>
           ),
         ),
         height13,
-        if (_settingStore.moveOutServerTabFuncBtns.fetch()!)
+        if (_settingStore.moveOutServerTabFuncBtns.fetch())
           SizedBox(
             height: 27,
             child: ServerFuncBtns(spi: spi, s: _s),
@@ -446,7 +446,7 @@ class _ServerPageState extends State<ServerPage>
     if (cs != ServerState.finished) {
       return 23.0;
     }
-    if (_settingStore.moveOutServerTabFuncBtns.fetch()!) {
+    if (_settingStore.moveOutServerTabFuncBtns.fetch()) {
       return 132;
     }
     return 107;

lib/view/page/setting/entry.dart

@@ -77,7 +77,12 @@ class _SettingPageState extends State<SettingPage> {
   void didChangeDependencies() {
     super.didChangeDependencies();
     _s = S.of(context)!;
-    _localeCode.value = _setting.locale.fetch() ?? _s.localeName;
+    final localeSettingVal = _setting.locale.fetch();
+    if (localeSettingVal.isEmpty) {
+      _localeCode.value = _s.localeName;
+    } else {
+      _localeCode.value = localeSettingVal;
+    }
   }
 
   @override
@@ -85,18 +90,18 @@ class _SettingPageState extends State<SettingPage> {
     super.initState();
     _serverProvider = locator<ServerProvider>();
     _setting = locator<SettingStore>();
-    _launchPageIdx.value = _setting.launchPage.fetch()!;
-    _nightMode.value = _setting.themeMode.fetch()!;
-    _updateInterval.value = _setting.serverStatusUpdateInterval.fetch()!;
-    _maxRetryCount.value = _setting.maxRetryCount.fetch()!;
-    _selectedColorValue.value = _setting.primaryColor.fetch()!;
-    _termFontSize.value = _setting.termFontSize.fetch()!;
-    _editorFontSize.value = _setting.editorFontSize.fetch()!;
-    _editorTheme.value = _setting.editorTheme.fetch()!;
-    _editorDarkTheme.value = _setting.editorDarkTheme.fetch()!;
-    _keyboardType.value = _setting.keyboardType.fetch()!;
-    _rotateQuarter.value = _setting.fullScreenRotateQuarter.fetch()!;
-    _netViewType.value = _setting.netViewType.fetch()!;
+    _launchPageIdx.value = _setting.launchPage.fetch();
+    _nightMode.value = _setting.themeMode.fetch();
+    _updateInterval.value = _setting.serverStatusUpdateInterval.fetch();
+    _maxRetryCount.value = _setting.maxRetryCount.fetch();
+    _selectedColorValue.value = _setting.primaryColor.fetch();
+    _termFontSize.value = _setting.termFontSize.fetch();
+    _editorFontSize.value = _setting.editorFontSize.fetch();
+    _editorTheme.value = _setting.editorTheme.fetch();
+    _editorDarkTheme.value = _setting.editorDarkTheme.fetch();
+    _keyboardType.value = _setting.keyboardType.fetch();
+    _rotateQuarter.value = _setting.fullScreenRotateQuarter.fetch();
+    _netViewType.value = _setting.netViewType.fetch();
     SharedPreferences.getInstance().then((value) => _sp = value);
   }
 
@@ -563,7 +568,7 @@ class _SettingPageState extends State<SettingPage> {
   }
 
   Widget _buildDiskIgnorePath() {
-    final paths = _setting.diskIgnorePath.fetch()!;
+    final paths = _setting.diskIgnorePath.fetch();
     return ListTile(
       title: Text(_s.diskIgnorePath),
       trailing: Text(_s.edit, style: textSize15),
@@ -987,7 +992,7 @@ class _SettingPageState extends State<SettingPage> {
 
   void _showFontSizeDialog(
     ValueNotifier<double> notifier,
-    StoreProperty property,
+    StorePropertyBase<double> property,
   ) {
     final ctrller = TextEditingController(text: notifier.value.toString());
     void onSave() {

lib/view/page/setting/srv_detail_seq.dart

@@ -30,7 +30,7 @@ class _ServerDetailOrderPageState extends State<ServerDetailOrderPage> {
   @override
   void initState() {
     super.initState();
-    _cardsOrder.addAll(_store.detailCardOrder.fetch()!);
+    _cardsOrder.addAll(_store.detailCardOrder.fetch());
   }
 
   @override

lib/view/page/setting/virt_key.dart

@@ -39,7 +39,7 @@ class _SSHVirtKeySettingPageState extends State<SSHVirtKeySettingPage> {
   }
 
   Widget _buildBody() {
-    final keys_ = _setting.sshVirtKeys.fetchRaw()!;
+    final keys_ = _setting.sshVirtKeys.fetch();
     final keys = <VirtKey>[];
     for (final key in keys_) {
       keys.add(key);

lib/view/page/ssh_term.dart

@@ -61,10 +61,10 @@ class _SSHPageState extends State<SSHPage> {
     final fontFamilly = getFileName(_setting.fontPath.fetch());
     final textStyle = TextStyle(
       fontFamily: fontFamilly,
-      fontSize: _setting.termFontSize.fetch()!,
+      fontSize: _setting.termFontSize.fetch(),
     );
     _terminalStyle = TerminalStyle.fromTextStyle(textStyle);
-    _keyboardType = TextInputType.values[_setting.keyboardType.fetch()!];
+    _keyboardType = TextInputType.values[_setting.keyboardType.fetch()];
     _initTerminal();
     _initVirtKeys();
   }
@@ -299,7 +299,7 @@ class _SSHPageState extends State<SSHPage> {
   }
 
   void _initVirtKeys() {
-    final virtKeys = List<VirtKey>.from(_setting.sshVirtKeys.fetchRaw());
+    final virtKeys = List<VirtKey>.from(_setting.sshVirtKeys.fetch());
 
     for (int len = 0; len < virtKeys.length; len += 7) {
       if (len + 7 > virtKeys.length) {

lib/view/page/storage/sftp.dart

@@ -430,7 +430,7 @@ class _SftpPageState extends State<SftpPage> with AfterLayoutMixin {
   void _delete(BuildContext context, SftpName file) {
     context.pop();
     final isDir = file.attr.isDirectory;
-    final useRmrf = _setting.sftpRmrfDir.fetch()!;
+    final useRmrf = _setting.sftpRmrfDir.fetch();
     final dirText = (isDir && !useRmrf) ? '\n${_s.sureDirEmpty}' : '';
     final text = '${_s.sureDelete(file.filename)}$dirText';
     final child = Text(text);