more refactor

lib/tools/shared_preferences.dart

@@ -0,0 +1,80 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:shared_preferences/shared_preferences.dart';
+
+abstract mixin class SharedPreferencesBacked<T> {
+  SharedPreferences get _sharedPreferences;
+  String keyName();
+  T valueFromJson(Object? obj);
+  Object? valueToJson(T val);
+
+  /// Load things from storage
+  Future<T> load() async {
+    final valueJsonStr = _sharedPreferences.getString(keyName());
+    final Object? valueJsonObj =
+        valueJsonStr != null ? jsonDecode(valueJsonStr) : null;
+    return valueFromJson(valueJsonObj);
+  }
+
+  /// Store things to storage
+  Future<T> store(T obj) async {
+    final valueJsonObj = valueToJson(obj);
+    if (valueJsonObj == null) {
+      await _sharedPreferences.remove(keyName());
+    } else {
+      await _sharedPreferences.setString(keyName(), jsonEncode(valueJsonObj));
+    }
+    return obj;
+  }
+}
+
+class SharedPreferencesValue<T> extends SharedPreferencesBacked<T> {
+  SharedPreferencesValue({
+    required SharedPreferences sharedPreferences,
+    required String keyName,
+    required T Function(Object? obj) valueFromJson,
+    required Object? Function(T obj) valueToJson,
+  })  : _sharedPreferencesInstance = sharedPreferences,
+        _valueFromJson = valueFromJson,
+        _valueToJson = valueToJson,
+        _keyName = keyName,
+        _streamController = StreamController<T>.broadcast();
+
+  @override
+  SharedPreferences get _sharedPreferences => _sharedPreferencesInstance;
+
+  T? get value => _value;
+  T get requireValue => _value!;
+  Stream<T> get stream => _streamController.stream;
+
+  Future<T> get() async {
+    final val = _value;
+    if (val != null) {
+      return val;
+    }
+    final loadedValue = await load();
+    return _value = loadedValue;
+  }
+
+  Future<void> set(T newVal) async {
+    _value = await store(newVal);
+    _streamController.add(newVal);
+  }
+
+  T? _value;
+  final SharedPreferences _sharedPreferencesInstance;
+  final String _keyName;
+  final T Function(Object? obj) _valueFromJson;
+  final Object? Function(T obj) _valueToJson;
+  final StreamController<T> _streamController;
+
+  //////////////////////////////////////////////////////////////
+  /// SharedPreferencesBacked
+  @override
+  String keyName() => _keyName;
+  @override
+  T valueFromJson(Object? obj) => _valueFromJson(obj);
+  @override
+  Object? valueToJson(T val) => _valueToJson(val);
+}

lib/tools/tools.dart

@@ -3,6 +3,7 @@ export 'loggy.dart';
 export 'phono_byte.dart';
 export 'responsive.dart';
 export 'scanner_error_widget.dart';
+export 'shared_preferences.dart';
 export 'state_logger.dart';
 export 'stream_wrapper_cubit.dart';
 export 'widget_helpers.dart';

lib/tools/widget_helpers.dart

@@ -5,6 +5,7 @@ import 'package:flutter_spinkit/flutter_spinkit.dart';
 import 'package:flutter_translate/flutter_translate.dart';
 import 'package:motion_toast/motion_toast.dart';
 import 'package:quickalert/quickalert.dart';
+import 'package:veilid_support/veilid_support.dart';
 
 import '../theme/theme.dart';
 
@@ -41,6 +42,24 @@ Widget waitingPage(BuildContext context) => ColoredBox(
     color: Theme.of(context).scaffoldBackgroundColor,
     child: Center(child: buildProgressIndicator(context)));
 
+Widget errorPage(BuildContext context, Object err, StackTrace? st) =>
+    ColoredBox(
+        color: Theme.of(context).colorScheme.error,
+        child: Center(child: Text(err.toString())));
+
+Widget asyncValueBuilder<T>(
+        AsyncValue<T> av, Widget Function(BuildContext, T) builder) =>
+    av.when(
+        loading: () => const Builder(builder: waitingPage),
+        error: (e, st) =>
+            Builder(builder: (context) => errorPage(context, e, st)),
+        data: (d) => Builder(builder: (context) => builder(context, d)));
+
+extension AsyncValueBuilderExt<T> on AsyncValue<T> {
+  Widget builder(Widget Function(BuildContext, T) builder) =>
+      asyncValueBuilder<T>(this, builder);
+}
+
 Future<void> showErrorModal(
     BuildContext context, String title, String text) async {
   await QuickAlert.show(
@@ -135,3 +154,7 @@ Future<T?> showStyledDialog<T>(
                           borderRadius: BorderRadius.circular(12))),
                   child: child.paddingAll(0)))));
 }
+
+bool get isPlatformDark =>
+    WidgetsBinding.instance.platformDispatcher.platformBrightness ==
+    Brightness.dark;

lib/tools/window_control.dart

@@ -27,14 +27,15 @@ Future<void> initializeWindowControl() async {
       skipTaskbar: false,
     );
     await windowManager.waitUntilReadyToShow(windowOptions, () async {
-      await _doWindowSetup(TitleBarStyle.hidden, OrientationCapability.normal);
+      await changeWindowSetup(
+          TitleBarStyle.hidden, OrientationCapability.normal);
       await windowManager.show();
       await windowManager.focus();
     });
   }
 }
 
-Future<void> _doWindowSetup(TitleBarStyle titleBarStyle,
+Future<void> changeWindowSetup(TitleBarStyle titleBarStyle,
     OrientationCapability orientationCapability) async {
   if (isDesktop) {
     await windowManager.setTitleBarStyle(titleBarStyle);
@@ -58,8 +59,3 @@ Future<void> _doWindowSetup(TitleBarStyle titleBarStyle,
     }
   }
 }
-
-Future<void> changeWindowSetup(TitleBarStyle titleBarStyle,
-    OrientationCapability orientationCapability) async {
-  await _doWindowSetup(titleBarStyle, orientationCapability);
-}