implemented RMV public transit module including trip search, station departures, and nearby stop lookup, added "Marianum Connect" API integration with bearer token authentication and auto-refresh logic, integrated geolocator for location-based station search, added persistent storage for favorite stations and recent trip queries, and implemented comprehensive UI for journey details, trip results, and disruption alerts
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import 'package:flutter/material.dart';
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import 'package:flutter_bloc/flutter_bloc.dart';
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import '../../../../api/connect/rmv/rmv_models.dart';
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import '../../../../api/errors/error_mapper.dart';
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import '../../../../state/app/modules/rmv/repository/rmv_repository.dart';
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import '../../../../state/app/modules/settings/bloc/settings_cubit.dart';
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import '../../../../utils/debouncer.dart';
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import '../../../../widget/app_progress_indicator.dart';
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import '../../../../widget/centered_leading.dart';
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import '../favorites_controller.dart';
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/// Modal search sheet for picking a [StopLocation]. Shows favorites + recents
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/// when the search field is empty, switches to live search results as soon as
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/// the user types. Returns the chosen stop via [Navigator.pop], or `null` if
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/// the user dismisses the sheet.
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Future<StopLocation?> showStationPickerSheet(
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BuildContext context, {
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String title = 'Station auswählen',
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}) => showModalBottomSheet<StopLocation>(
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context: context,
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isScrollControlled: true,
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showDragHandle: true,
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useSafeArea: true,
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builder: (sheetCtx) => _StationPickerSheet(title: title),
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);
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class _StationPickerSheet extends StatefulWidget {
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final String title;
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const _StationPickerSheet({required this.title});
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@override
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State<_StationPickerSheet> createState() => _StationPickerSheetState();
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}
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class _StationPickerSheetState extends State<_StationPickerSheet> {
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static const _debounceTag = 'rmv_station_search';
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final TextEditingController _controller = TextEditingController();
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final RmvRepository _repo = RmvRepository();
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List<StopLocation>? _results;
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bool _loading = false;
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Object? _error;
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String _query = '';
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@override
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void dispose() {
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Debouncer.cancel(_debounceTag);
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_controller.dispose();
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super.dispose();
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}
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void _onChanged(String value) {
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final trimmed = value.trim();
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setState(() => _query = trimmed);
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if (trimmed.length < 2) {
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setState(() {
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_results = null;
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_error = null;
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_loading = false;
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});
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Debouncer.cancel(_debounceTag);
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return;
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}
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Debouncer.debounce(_debounceTag, const Duration(milliseconds: 300), () {
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_runSearch(trimmed);
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});
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}
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Future<void> _runSearch(String q) async {
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setState(() {
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_loading = true;
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_error = null;
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});
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try {
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final results = await _repo.searchStops(q, max: 25);
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if (!mounted || _query != q) return;
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setState(() {
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_results = results;
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_loading = false;
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});
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} catch (e) {
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if (!mounted || _query != q) return;
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setState(() {
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_error = e;
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_loading = false;
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});
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}
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}
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@override
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Widget build(BuildContext context) {
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final settings = context.read<SettingsCubit>();
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final favorites =
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settings.val().rmvSettings.favoriteStations;
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final recents = settings.val().rmvSettings.recentStations;
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final viewInsets = MediaQuery.of(context).viewInsets;
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return Padding(
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padding: EdgeInsets.only(bottom: viewInsets.bottom),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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Padding(
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padding: const EdgeInsets.fromLTRB(16, 4, 16, 8),
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child: Text(
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widget.title,
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style: Theme.of(context).textTheme.titleLarge,
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),
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),
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16),
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child: TextField(
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controller: _controller,
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autofocus: true,
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onChanged: _onChanged,
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decoration: InputDecoration(
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hintText: 'Station suchen…',
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prefixIcon: const Icon(Icons.search),
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suffixIcon: _query.isEmpty
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? null
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: IconButton(
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icon: const Icon(Icons.clear),
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onPressed: () {
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_controller.clear();
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_onChanged('');
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},
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),
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8),
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),
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),
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),
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),
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const SizedBox(height: 8),
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ConstrainedBox(
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constraints: BoxConstraints(
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maxHeight: MediaQuery.of(context).size.height * 0.6,
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minHeight: 200,
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),
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child: _body(favorites, recents),
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),
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],
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),
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);
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}
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Widget _body(List<StopLocation> favorites, List<StopLocation> recents) {
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if (_loading) {
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return const Center(child: AppProgressIndicator.medium());
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}
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final err = _error;
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if (err != null) {
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return Padding(
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padding: const EdgeInsets.all(16),
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child: Text(
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errorToUserMessage(err),
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style: TextStyle(color: Theme.of(context).colorScheme.error),
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),
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);
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}
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final results = _results;
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if (results != null) {
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if (results.isEmpty) {
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return Center(
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child: Padding(
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padding: const EdgeInsets.all(16),
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child: Text(
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'Keine Station für "$_query" gefunden.',
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style: Theme.of(context).textTheme.bodyMedium,
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),
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),
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);
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}
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return ListView(
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children: results
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.map((s) => _tile(s, leadingIcon: Icons.directions_transit))
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.toList(),
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);
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}
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// Empty query → favorites + recents.
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final widgets = <Widget>[];
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if (favorites.isNotEmpty) {
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widgets.add(_sectionHeader('Favoriten'));
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widgets.addAll(
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favorites.map((s) => _tile(s, leadingIcon: Icons.star)),
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);
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}
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if (recents.isNotEmpty) {
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widgets.add(_sectionHeader('Zuletzt verwendet'));
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widgets.addAll(
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recents.map((s) => _tile(s, leadingIcon: Icons.history)),
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);
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}
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if (widgets.isEmpty) {
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return Center(
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child: Padding(
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padding: const EdgeInsets.all(16),
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child: Text(
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'Tippe oben einen Stationsnamen ein, um die RMV-Datenbank zu durchsuchen.',
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style: Theme.of(context).textTheme.bodyMedium,
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textAlign: TextAlign.center,
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),
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),
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);
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}
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return ListView(children: widgets);
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}
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Widget _sectionHeader(String text) => Padding(
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padding: const EdgeInsets.fromLTRB(16, 12, 16, 4),
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child: Text(
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text,
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style: Theme.of(context).textTheme.labelLarge?.copyWith(
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color: Theme.of(context).colorScheme.secondary,
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),
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),
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);
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Widget _tile(StopLocation stop, {required IconData leadingIcon}) => ListTile(
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leading: CenteredLeading(Icon(leadingIcon)),
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title: Text(stop.name),
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subtitle: stop.description == null ? null : Text(stop.description!),
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onTap: () {
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RmvFavoritesController(context.read<SettingsCubit>()).addRecent(stop);
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Navigator.of(context).pop(stop);
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},
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);
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}
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