fluffychat/lib/pangea/login/pages/language_selection_page.dart

312 lines
12 KiB
Dart

import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import 'package:matrix/matrix_api_lite/utils/logs.dart';
import 'package:provider/provider.dart';
import 'package:fluffychat/config/themes.dart';
import 'package:fluffychat/l10n/l10n.dart';
import 'package:fluffychat/pangea/common/utils/error_handler.dart';
import 'package:fluffychat/pangea/common/widgets/shimmer_background.dart';
import 'package:fluffychat/pangea/common/widgets/shrinkable_text.dart';
import 'package:fluffychat/pangea/languages/language_model.dart';
import 'package:fluffychat/pangea/languages/language_service.dart';
import 'package:fluffychat/pangea/languages/locale_provider.dart';
import 'package:fluffychat/pangea/languages/p_language_store.dart';
import 'package:fluffychat/pangea/learning_settings/language_mismatch_popup.dart';
import 'package:fluffychat/pangea/learning_settings/p_language_dropdown.dart';
import 'package:fluffychat/pangea/login/utils/lang_code_repo.dart';
import 'package:fluffychat/widgets/matrix.dart';
class LanguageSelectionPage extends StatefulWidget {
const LanguageSelectionPage({super.key});
@override
State<LanguageSelectionPage> createState() => LanguageSelectionPageState();
}
class LanguageSelectionPageState extends State<LanguageSelectionPage> {
Object? _error;
LanguageModel? _selectedLanguage;
LanguageModel? _baseLanguage;
final TextEditingController _searchController = TextEditingController();
@override
void initState() {
super.initState();
_baseLanguage = LanguageService.systemLanguage;
_setFromCache();
}
@override
void dispose() {
_searchController.dispose();
super.dispose();
}
// The user may set their target language initally, then return to this page
// to change it again. Try and get the cached values if present.
void _setFromCache() {
LangCodeRepo.get().then((langSettings) {
if (langSettings == null) return;
final cachedTargetLang = PLanguageStore.byLangCode(
langSettings.targetLangCode,
);
final cachedBaseLang = langSettings.baseLangCode != null
? PLanguageStore.byLangCode(langSettings.baseLangCode!)
: null;
if (cachedTargetLang == _selectedLanguage &&
cachedBaseLang == _baseLanguage) {
return;
}
setState(() {
_selectedLanguage = cachedTargetLang ?? _selectedLanguage;
_baseLanguage = cachedBaseLang ?? _baseLanguage;
});
_cacheLanguages();
});
}
void _setSelectedLanguage(LanguageModel? l) {
setState(() => _selectedLanguage = l);
_cacheLanguages();
}
void _setBaseLanguage(LanguageModel? l) {
setState(() => _baseLanguage = l);
_cacheLanguages();
if (l != null) {
WidgetsBinding.instance.addPostFrameCallback((_) => _setAppLanguage(l));
}
}
void _setAppLanguage(LanguageModel language) {
try {
Provider.of<LocaleProvider>(
context,
listen: false,
).setLocale(language.langCode);
} catch (e, s) {
Logs().e('Error setting app language', e);
ErrorHandler.logError(e: e, s: s, data: {});
}
}
Future<void> _submit() async {
setState(() => _error = null);
if (_selectedLanguage == null) return;
if (_selectedLanguage?.langCodeShort == _baseLanguage?.langCodeShort) {
setState(() => _error = IdenticalLanguageException());
return;
}
await _cacheLanguages();
context.go(
GoRouterState.of(context).fullPath?.contains('home') == true
? '/home/language/signup'
: '/registration/create',
);
}
Future<void> _cacheLanguages() async {
await LangCodeRepo.set(
LanguageSettings(
targetLangCode: _selectedLanguage!.langCode,
baseLangCode: _baseLanguage?.langCode,
),
);
}
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final languages = MatrixState.pangeaController.pLanguageStore.targetOptions;
final isColumnMode = FluffyThemes.isColumnMode(context);
return Scaffold(
appBar: AppBar(
title: ConstrainedBox(
constraints: const BoxConstraints(maxWidth: 500),
child: Row(
spacing: 12.0,
children: [
Navigator.of(context).canPop()
? BackButton(onPressed: Navigator.of(context).maybePop)
: const SizedBox(width: 40.0),
Expanded(
child: LayoutBuilder(
builder: (context, constraints) {
return ShrinkableText(
text: L10n.of(context).onboardingLanguagesTitle,
maxWidth: constraints.maxWidth,
alignment: Alignment.center,
);
},
),
),
const SizedBox(width: 40.0),
],
),
),
automaticallyImplyLeading: false,
),
body: SafeArea(
child: Center(
child: Container(
padding: const EdgeInsets.all(20.0),
constraints: const BoxConstraints(maxWidth: 500),
child: Column(
spacing: 24.0,
children: [
TextField(
controller: _searchController,
decoration: InputDecoration(
prefixIcon: const Icon(Icons.search),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(50),
),
hintText: L10n.of(context).searchLanguagesHint,
),
),
Expanded(
child: Stack(
children: [
Align(
alignment: Alignment.topCenter,
child: ValueListenableBuilder(
valueListenable: _searchController,
builder: (context, val, _) {
return SingleChildScrollView(
child: Padding(
padding: const EdgeInsets.only(
left: 16.0,
right: 16.0,
bottom: 60.0,
),
child: Wrap(
spacing: isColumnMode ? 16.0 : 8.0,
runSpacing: isColumnMode ? 24.0 : 16.0,
alignment: WrapAlignment.center,
children: languages
.where(
(l) => LanguageModel.search(
l,
val.text,
context,
),
)
.map(
(l) => ShimmerBackground(
enabled: _selectedLanguage == null,
borderRadius: const BorderRadius.all(
Radius.circular(16.0),
),
child: FilterChip(
materialTapTargetSize:
MaterialTapTargetSize
.shrinkWrap,
selected: _selectedLanguage == l,
shape: const RoundedRectangleBorder(
borderRadius: BorderRadius.all(
Radius.circular(16.0),
),
),
backgroundColor:
_selectedLanguage == l
? theme.colorScheme.primary
: theme.colorScheme.surface,
padding: const EdgeInsets.symmetric(
horizontal: 8.0,
vertical: 4.0,
),
label: Text(
l.getDisplayName(context),
style: isColumnMode
? theme.textTheme.bodyLarge
: theme.textTheme.bodyMedium,
),
onSelected: (selected) {
_setSelectedLanguage(
selected ? l : null,
);
},
),
),
)
.toList(),
),
),
);
},
),
),
Align(
alignment: Alignment.bottomCenter,
child: IgnorePointer(
child: Container(
height: 100,
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.bottomCenter,
end: Alignment.topCenter,
colors: [
theme.colorScheme.surface,
theme.colorScheme.surface.withAlpha(0),
],
),
),
),
),
),
],
),
),
AnimatedSize(
duration: FluffyThemes.animationDuration,
child:
_selectedLanguage != null &&
_selectedLanguage?.langCodeShort ==
_baseLanguage?.langCodeShort
? PLanguageDropdown(
languages: languages,
onChange: _setBaseLanguage,
initialLanguage: _baseLanguage,
decorationText: L10n.of(context).myBaseLanguage,
error: _error is IdenticalLanguageException
? L10n.of(context).noIdenticalLanguages
: null,
)
: const SizedBox(),
),
ShimmerBackground(
enabled: _selectedLanguage != null,
borderRadius: BorderRadius.circular(24.0),
child: ElevatedButton(
onPressed: _selectedLanguage != null ? _submit : null,
style: ElevatedButton.styleFrom(
backgroundColor: theme.colorScheme.primaryContainer,
foregroundColor: theme.colorScheme.onPrimaryContainer,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(24.0),
),
),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [Text(L10n.of(context).letsGo)],
),
),
),
],
),
),
),
),
);
}
}