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refactor: preferences repository to contain only 1 provicder

This commit is contained in:
insleker 2025-09-20 19:31:27 +08:00
parent 7032f22327
commit 82d0c40e6a
4 changed files with 173 additions and 229 deletions
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47
lib/app.dart
View File

@ -14,33 +14,24 @@ class MyApp extends StatelessWidget {
return ProviderScope(
child: Consumer(
builder: (context, ref, _) {
// Ensure SharedPreferences loaded before building MaterialApp
final sp = ref.watch(sharedPreferencesProvider);
return sp.when(
loading: () => const SizedBox.shrink(),
error:
(e, st) => MaterialApp(
onGenerateTitle: (ctx) => AppLocalizations.of(ctx).appTitle,
supportedLocales: AppLocalizations.supportedLocales,
localizationsDelegates:
AppLocalizations.localizationsDelegates,
home: Builder(
builder:
(ctx) => Scaffold(
body: Center(
child: Text(
AppLocalizations.of(
ctx,
).errorWithMessage(e.toString()),
),
),
),
),
),
data: (_) {
final themeMode = ref.watch(themeModeProvider);
final seed = ref.watch(themeSeedColorProvider);
final appLocale = ref.watch(localeProvider);
final prefs = ref.watch(preferencesRepositoryProvider);
final seed = themeSeedFromPrefs(prefs);
final appLocale =
supportedLanguageTags().contains(prefs.language)
? parseLanguageTag(prefs.language)
: null;
final themeMode = () {
switch (prefs.theme) {
case 'light':
return ThemeMode.light;
case 'dark':
return ThemeMode.dark;
case 'system':
default:
return ThemeMode.system;
}
}();
return MaterialApp.router(
onGenerateTitle: (ctx) => AppLocalizations.of(ctx).appTitle,
theme: ThemeData(
@ -90,8 +81,6 @@ class MyApp extends StatelessWidget {
},
);
},
);
},
),
);
}

158
lib/data/repositories/preferences_repository.dart
View File

@ -1,3 +1,4 @@
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:shared_preferences/shared_preferences.dart';
@ -26,6 +27,27 @@ Set<String> _supportedTags() {
return AppLocalizations.supportedLocales.map((l) => toLanguageTag(l)).toSet();
}
// Public helpers for other layers to consume without extra providers
Set<String> supportedLanguageTags() => _supportedTags();
Locale parseLanguageTag(String tag) => _parseLanguageTag(tag);
Color themeSeedFromPrefs(PreferencesState prefs) {
final c = PreferencesStateNotifier._tryParseColor(prefs.theme_color);
return c ?? Colors.blue;
}
Future<Map<String, String>> languageAutonyms() async {
final tags = _supportedTags().toList()..sort();
final delegate = LocaleNamesLocalizationsDelegate();
final Map<String, String> result = {};
for (final tag in tags) {
final locale = _parseLanguageTag(tag);
final names = await delegate.load(locale);
final name = names.nameOf(tag) ?? tag;
result[tag] = name;
}
return result;
}
// Keys
const _kTheme = 'theme'; // 'light'|'dark'|'system'
// Theme color persisted as hex ARGB string (e.g., '#FF2196F3').
@ -68,7 +90,8 @@ String _normalizeLanguageTag(String tag) {
}
class PreferencesStateNotifier extends StateNotifier<PreferencesState> {
final SharedPreferences prefs;
late final SharedPreferences _prefs;
final Completer<void> _ready = Completer<void>();
static Color? _tryParseColor(String? s) {
if (s == null || s.isEmpty) return null;
final v = s.trim();
@ -139,21 +162,41 @@ class PreferencesStateNotifier extends StateNotifier<PreferencesState> {
return '#$a$r$g$b';
}
PreferencesStateNotifier(this.prefs)
PreferencesStateNotifier([SharedPreferences? prefs])
: super(
PreferencesState(
theme: prefs.getString(_kTheme) ?? 'system',
theme: 'system',
language: _normalizeLanguageTag(
prefs.getString(_kLanguage) ??
WidgetsBinding.instance.platformDispatcher.locale
.toLanguageTag(),
WidgetsBinding.instance.platformDispatcher.locale.toLanguageTag(),
),
exportDpi: _readDpi(prefs),
theme_color: prefs.getString(_kThemeColor) ?? '#FF2196F3', // blue
exportDpi: 144.0,
theme_color: '#FF2196F3', // blue
),
) {
// normalize language to supported/fallback
_init(prefs);
}
Future<void> _init(SharedPreferences? injected) async {
_prefs = injected ?? await SharedPreferences.getInstance();
// Load persisted values (with sane defaults)
final loaded = PreferencesState(
theme: _prefs.getString(_kTheme) ?? 'system',
language: _normalizeLanguageTag(
_prefs.getString(_kLanguage) ??
WidgetsBinding.instance.platformDispatcher.locale.toLanguageTag(),
),
exportDpi: _readDpi(_prefs),
theme_color: _prefs.getString(_kThemeColor) ?? '#FF2196F3',
);
state = loaded;
_ensureValid();
if (!_ready.isCompleted) _ready.complete();
}
Future<void> _ensureReady() async {
if (!_ready.isCompleted) {
await _ready.future;
}
}
static double _readDpi(SharedPreferences prefs) {
@ -167,18 +210,18 @@ class PreferencesStateNotifier extends StateNotifier<PreferencesState> {
final themeValid = {'light', 'dark', 'system'};
if (!themeValid.contains(state.theme)) {
state = state.copyWith(theme: 'system');
prefs.setString(_kTheme, 'system');
_prefs.setString(_kTheme, 'system');
}
final normalized = _normalizeLanguageTag(state.language);
if (normalized != state.language) {
state = state.copyWith(language: normalized);
prefs.setString(_kLanguage, normalized);
_prefs.setString(_kLanguage, normalized);
}
// Ensure DPI is one of allowed values
const allowed = [96.0, 144.0, 200.0, 300.0];
if (!allowed.contains(state.exportDpi)) {
state = state.copyWith(exportDpi: 144.0);
prefs.setDouble(_kExportDpi, 144.0);
_prefs.setDouble(_kExportDpi, 144.0);
}
// Ensure theme color is a valid hex or known name; normalize to hex
final parsed = _tryParseColor(state.theme_color);
@ -186,12 +229,12 @@ class PreferencesStateNotifier extends StateNotifier<PreferencesState> {
final fallback = Colors.blue;
final hex = _toHex(fallback);
state = state.copyWith(theme_color: hex);
prefs.setString(_kThemeColor, hex);
_prefs.setString(_kThemeColor, hex);
} else {
final hex = _toHex(parsed);
if (state.theme_color != hex) {
state = state.copyWith(theme_color: hex);
prefs.setString(_kThemeColor, hex);
_prefs.setString(_kThemeColor, hex);
}
}
}
@ -200,13 +243,15 @@ class PreferencesStateNotifier extends StateNotifier<PreferencesState> {
final valid = {'light', 'dark', 'system'};
if (!valid.contains(theme)) return;
state = state.copyWith(theme: theme);
await prefs.setString(_kTheme, theme);
await _ensureReady();
await _prefs.setString(_kTheme, theme);
}
Future<void> setLanguage(String language) async {
final normalized = _normalizeLanguageTag(language);
state = state.copyWith(language: normalized);
await prefs.setString(_kLanguage, normalized);
await _ensureReady();
await _prefs.setString(_kLanguage, normalized);
}
Future<void> setThemeColor(String themeColor) async {
@ -214,7 +259,8 @@ class PreferencesStateNotifier extends StateNotifier<PreferencesState> {
final c = _tryParseColor(themeColor) ?? Colors.blue;
final hex = _toHex(c);
state = state.copyWith(theme_color: hex);
await prefs.setString(_kThemeColor, hex);
await _ensureReady();
await _prefs.setString(_kThemeColor, hex);
}
Future<void> resetToDefaults() async {
@ -227,85 +273,27 @@ class PreferencesStateNotifier extends StateNotifier<PreferencesState> {
exportDpi: 144.0,
theme_color: '#FF2196F3',
);
await prefs.setString(_kTheme, 'system');
await prefs.setString(_kLanguage, normalized);
await prefs.setString(_kPageView, 'continuous');
await prefs.setDouble(_kExportDpi, 144.0);
await prefs.setString(_kThemeColor, '#FF2196F3');
await _ensureReady();
await _prefs.setString(_kTheme, 'system');
await _prefs.setString(_kLanguage, normalized);
await _prefs.setString(_kPageView, 'continuous');
await _prefs.setDouble(_kExportDpi, 144.0);
await _prefs.setString(_kThemeColor, '#FF2196F3');
}
Future<void> setExportDpi(double dpi) async {
const allowed = [96.0, 144.0, 200.0, 300.0];
if (!allowed.contains(dpi)) return;
state = state.copyWith(exportDpi: dpi);
await prefs.setDouble(_kExportDpi, dpi);
await _ensureReady();
await _prefs.setDouble(_kExportDpi, dpi);
}
}
final sharedPreferencesProvider = FutureProvider<SharedPreferences>((
ref,
) async {
final p = await SharedPreferences.getInstance();
return p;
});
final preferencesRepositoryProvider =
StateNotifierProvider<PreferencesStateNotifier, PreferencesState>((ref) {
// In tests, you can override sharedPreferencesProvider
final prefs = ref
.watch(sharedPreferencesProvider)
.maybeWhen(
data: (p) => p,
orElse: () => throw StateError('SharedPreferences not ready'),
);
return PreferencesStateNotifier(prefs);
// Construct with lazy SharedPreferences initialization.
return PreferencesStateNotifier();
});
// pageViewModeProvider removed; the app always runs in continuous mode.
/// Derive the active ThemeMode based on preference and platform brightness
final themeModeProvider = Provider<ThemeMode>((ref) {
final prefs = ref.watch(preferencesRepositoryProvider);
switch (prefs.theme) {
case 'light':
return ThemeMode.light;
case 'dark':
return ThemeMode.dark;
case 'system':
default:
return ThemeMode.system;
}
});
/// Maps the selected theme color name to an actual Color for theming.
final themeSeedColorProvider = Provider<Color>((ref) {
final prefs = ref.watch(preferencesRepositoryProvider);
final c = PreferencesStateNotifier._tryParseColor(prefs.theme_color);
return c ?? Colors.blue;
});
final localeProvider = Provider<Locale?>((ref) {
final prefs = ref.watch(preferencesRepositoryProvider);
final supported = _supportedTags();
// Return explicit Locale for supported ones; if not supported, null to follow device
if (supported.contains(prefs.language)) {
return _parseLanguageTag(prefs.language);
}
return null;
});
/// Provides a map of BCP-47 tag -> autonym (self name), independent of UI locale.
final languageAutonymsProvider = FutureProvider<Map<String, String>>((
ref,
) async {
final tags = _supportedTags().toList()..sort();
final delegate = LocaleNamesLocalizationsDelegate();
final Map<String, String> result = {};
for (final tag in tags) {
final locale = _parseLanguageTag(tag);
final names = await delegate.load(locale);
final name = names.nameOf(tag) ?? tag;
result[tag] = name;
}
return result;
});

56
lib/ui/features/preferences/widgets/settings_screen.dart
View File

@ -62,47 +62,17 @@ class _SettingsDialogState extends ConsumerState<SettingsDialog> {
SizedBox(width: 140, child: Text('${l.language}:')),
const SizedBox(width: 8),
Expanded(
child: ref
.watch(languageAutonymsProvider)
.when(
loading:
() => const SizedBox(
child: FutureBuilder<Map<String, String>>(
future: languageAutonyms(),
builder: (context, snapshot) {
if (snapshot.connectionState ==
ConnectionState.waiting) {
return const SizedBox(
height: 48,
child: Center(
child: CircularProgressIndicator(),
),
),
error: (_, __) {
final tags =
AppLocalizations.supportedLocales
.map((loc) => toLanguageTag(loc))
.toList()
..sort();
return DropdownButton<String>(
key: const Key('ddl_language'),
isExpanded: true,
value: _language,
items:
tags
.map(
(tag) => DropdownMenuItem<String>(
value: tag,
child: Text(tag),
),
)
.toList(),
onChanged: (v) async {
if (v == null) return;
setState(() => _language = v);
await ref
.read(
preferencesRepositoryProvider.notifier,
)
.setLanguage(v);
},
child: Center(child: CircularProgressIndicator()),
);
},
data: (names) {
}
final names = snapshot.data;
final tags =
AppLocalizations.supportedLocales
.map((loc) => toLanguageTag(loc))
@ -117,7 +87,7 @@ class _SettingsDialogState extends ConsumerState<SettingsDialog> {
.map(
(tag) => DropdownMenuItem<String>(
value: tag,
child: Text(names[tag] ?? tag),
child: Text(names?[tag] ?? tag),
),
)
.toList(),
@ -125,9 +95,7 @@ class _SettingsDialogState extends ConsumerState<SettingsDialog> {
if (v == null) return;
setState(() => _language = v);
await ref
.read(
preferencesRepositoryProvider.notifier,
)
.read(preferencesRepositoryProvider.notifier)
.setLanguage(v);
},
);
@ -256,7 +224,7 @@ class _ThemeColorCircle extends ConsumerWidget {
@override
Widget build(BuildContext context, WidgetRef ref) {
final seed = ref.watch(themeSeedColorProvider);
final seed = themeSeedFromPrefs(ref.watch(preferencesRepositoryProvider));
return InkWell(
key: const Key('btn_theme_color_picker'),
onTap: () async {

1
test/widget/export_flow_test.dart
View File

@ -52,7 +52,6 @@ void main() {
await tester.pumpWidget(
ProviderScope(
overrides: [
sharedPreferencesProvider.overrideWith((_) async => prefs),
preferencesRepositoryProvider.overrideWith(
(ref) => PreferencesStateNotifier(prefs),
),