prepare for multiple apps
This commit is contained in:
Fabian Freund
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/*
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* Copyright (c) 2024-2026 Fabian Freund.
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*
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* This file is part of WebLibre
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* (see https://weblibre.eu).
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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import 'package:flutter/material.dart';
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import 'package:hooks_riverpod/hooks_riverpod.dart';
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import 'package:weblibre/core/providers/router.dart';
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import 'package:weblibre/domain/services/app_initialization.dart';
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import 'package:weblibre/features/sync/domain/entities/sync_repository_state.dart';
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import 'package:weblibre/features/sync/domain/repositories/sync.dart';
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import 'package:weblibre/presentation/widgets/failure_widget.dart';
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import 'package:weblibre/utils/ui_helper.dart' as ui_helper;
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class MainApp extends HookConsumerWidget {
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final ThemeData? theme;
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final ThemeData? darkTheme;
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final ThemeMode? themeMode;
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final double uiScaleFactor;
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final bool disableAnimations;
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const MainApp({
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required this.theme,
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required this.darkTheme,
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required this.themeMode,
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required this.uiScaleFactor,
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required this.disableAnimations,
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super.key,
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});
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final initializationResult = ref.watch(appInitializationServiceProvider);
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final router = ref.watch(routerProvider);
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return initializationResult.fold(
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(initializationState) {
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if (!initializationState.initialized) {
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return MaterialApp(
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debugShowCheckedModeBanner: false,
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theme: theme,
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darkTheme: darkTheme,
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themeMode: themeMode,
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themeAnimationStyle: disableAnimations
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? AnimationStyle.noAnimation
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: null,
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builder: (context, child) {
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return _AppMediaQueryOverrides(
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uiScaleFactor: uiScaleFactor,
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disableAnimations: disableAnimations,
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child: child ?? const SizedBox.shrink(),
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);
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},
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home: Scaffold(
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body: Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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const CircularProgressIndicator(),
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if (initializationState.stage != null)
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Padding(
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padding: const EdgeInsets.only(top: 8.0),
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child: Text(initializationState.stage!),
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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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return MaterialApp.router(
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debugShowCheckedModeBanner: false,
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theme: theme,
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darkTheme: darkTheme,
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themeMode: themeMode,
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themeAnimationStyle: disableAnimations
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? AnimationStyle.noAnimation
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: null,
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routerConfig: router.value,
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builder: (context, child) {
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return _AppMediaQueryOverrides(
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uiScaleFactor: uiScaleFactor,
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disableAnimations: disableAnimations,
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child: _SyncEventListener(
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child: child ?? const SizedBox.shrink(),
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),
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);
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},
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);
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},
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onFailure: (errorMessage) {
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return MaterialApp(
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debugShowCheckedModeBanner: false,
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theme: theme,
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darkTheme: darkTheme,
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themeMode: themeMode,
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themeAnimationStyle: disableAnimations
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? AnimationStyle.noAnimation
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: null,
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builder: (context, child) {
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return _AppMediaQueryOverrides(
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uiScaleFactor: uiScaleFactor,
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disableAnimations: disableAnimations,
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child: child ?? const SizedBox.shrink(),
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);
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},
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home: Scaffold(
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appBar: AppBar(title: const Text('Initiallization Error')),
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body: Center(
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child: FailureWidget(
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title: 'Could not initialize App',
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exception: errorMessage.toString(),
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onRetry: () async {
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await ref
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.read(appInitializationServiceProvider.notifier)
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.reinitialize();
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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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MediaQueryData applyAppMediaQueryOverrides({
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required MediaQueryData mediaQuery,
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required double uiScaleFactor,
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required bool disableAnimations,
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}) {
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final textScaler = uiScaleFactor == 1.0
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? mediaQuery.textScaler
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: _AppTextScaler(
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baseTextScaler: mediaQuery.textScaler,
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uiScaleFactor: uiScaleFactor,
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);
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if (disableAnimations) {
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return mediaQuery.copyWith(textScaler: textScaler, disableAnimations: true);
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}
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if (uiScaleFactor == 1.0) {
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return mediaQuery;
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}
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return mediaQuery.copyWith(textScaler: textScaler);
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}
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class _AppMediaQueryOverrides extends StatelessWidget {
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final double uiScaleFactor;
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final bool disableAnimations;
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final Widget child;
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const _AppMediaQueryOverrides({
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required this.uiScaleFactor,
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required this.disableAnimations,
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required this.child,
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});
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@override
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Widget build(BuildContext context) {
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if (uiScaleFactor == 1.0 && !disableAnimations) {
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return child;
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}
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final mediaQuery = MediaQuery.of(context);
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final overriddenMediaQuery = applyAppMediaQueryOverrides(
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mediaQuery: mediaQuery,
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uiScaleFactor: uiScaleFactor,
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disableAnimations: disableAnimations,
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);
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return MediaQuery(data: overriddenMediaQuery, child: child);
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}
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}
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class _AppTextScaler extends TextScaler {
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final TextScaler baseTextScaler;
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final double uiScaleFactor;
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const _AppTextScaler({
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required this.baseTextScaler,
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required this.uiScaleFactor,
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}) : assert(uiScaleFactor > 0);
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@override
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double scale(double fontSize) =>
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baseTextScaler.scale(fontSize) * uiScaleFactor;
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@override
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double get textScaleFactor => scale(1.0);
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@override
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bool operator ==(Object other) {
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if (identical(this, other)) {
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return true;
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}
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return other is _AppTextScaler &&
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baseTextScaler == other.baseTextScaler &&
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uiScaleFactor == other.uiScaleFactor;
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}
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@override
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int get hashCode => Object.hash(baseTextScaler, uiScaleFactor);
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}
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class _SyncEventListener extends ConsumerWidget {
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final Widget child;
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const _SyncEventListener({required this.child});
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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ref.listen(syncEventProvider, (previous, next) {
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if (next.isLoading || !next.hasValue) return;
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final event = next.value;
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if (event == null) return;
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final (syncEvent, syncError) = event;
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switch (syncEvent) {
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// case SyncEvent.completed:
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// ui_helper.showInfoMessage(
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// context,
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// 'Synchronization complete',
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// duration: const Duration(seconds: 2),
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// );
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case SyncEvent.error:
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ui_helper.showErrorMessage(
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context,
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syncError ?? 'Synchronization failed',
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);
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case SyncEvent.started:
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case SyncEvent.completed:
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case null:
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break;
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}
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});
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return child;
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}
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}
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