122 lines
3.6 KiB
Dart
122 lines
3.6 KiB
Dart
import 'package:flutter/material.dart';
|
|
import 'package:provider/provider.dart';
|
|
|
|
import '../widgets/flood_station_list_view.dart';
|
|
import '../services/flood_station_provider.dart';
|
|
import '../widgets/loading_notifier.dart';
|
|
import '../widgets/station_filter.dart';
|
|
import 'flood_station_page.dart';
|
|
|
|
class LandingPage extends StatefulWidget {
|
|
const LandingPage({super.key});
|
|
|
|
static const routeName = '/';
|
|
|
|
@override
|
|
State<LandingPage> createState() => _LandingPageState();
|
|
}
|
|
|
|
class _LandingPageState extends State<LandingPage> {
|
|
late FloodStationProvider floodStationProvider;
|
|
OverlayEntry? _overlayEntry;
|
|
int loadingTimes = 0;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
floodStationProvider = context.watch<FloodStationProvider>();
|
|
return Scaffold(
|
|
body: Column(
|
|
children: [
|
|
StationFilter(
|
|
onChanged: (filterText) {
|
|
if (filterText.isEmpty) {
|
|
floodStationProvider.filtered = false;
|
|
setState(() {});
|
|
return;
|
|
}
|
|
showLoadingNotifier(context: context, message: 'Loading');
|
|
floodStationProvider.loadFilteredStations(filterText);
|
|
floodStationProvider.filteredStationsFuture
|
|
?.then((_) => removeLoadingNotifier());
|
|
floodStationProvider.filtered = true;
|
|
},
|
|
),
|
|
_shouldShowList()
|
|
? Expanded(
|
|
child: FloodStationListView(
|
|
stations: floodStationProvider.filtered
|
|
? floodStationProvider.filteredStations
|
|
: floodStationProvider.allStations,
|
|
onItemTapped: (station) {
|
|
floodStationProvider.selectedStation = station;
|
|
Navigator.of(context)
|
|
.pushNamed(FloodStationPage.routeName);
|
|
},
|
|
),
|
|
)
|
|
: Expanded(
|
|
child: Center(
|
|
child: ElevatedButton(
|
|
onPressed: () {
|
|
showLoadingNotifier(
|
|
context: context, message: 'Loading');
|
|
floodStationProvider
|
|
.loadAllStations()
|
|
.whenComplete(() => removeLoadingNotifier());
|
|
},
|
|
child: Text('Load all Stations'),
|
|
),
|
|
),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
|
|
bool _shouldShowList() {
|
|
if (!floodStationProvider.filtered &&
|
|
floodStationProvider.allStations.isNotEmpty) {
|
|
return true;
|
|
}
|
|
if (floodStationProvider.filtered) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
Future<void> showLoadingNotifier({
|
|
required BuildContext context,
|
|
required String message,
|
|
}) async {
|
|
if (_overlayEntry != null) return;
|
|
OverlayState? overlayState = Overlay.of(context);
|
|
_overlayEntry = OverlayEntry(
|
|
builder: (c) {
|
|
return Positioned(
|
|
bottom: 16,
|
|
left: 0,
|
|
right: 0,
|
|
child: Center(
|
|
child: LoadingNotifier(
|
|
message: 'Loading',
|
|
onDismissed: () {
|
|
floodStationProvider.cancelFilterLoading();
|
|
removeLoadingNotifier();
|
|
},
|
|
),
|
|
),
|
|
);
|
|
},
|
|
);
|
|
overlayState.insert(_overlayEntry!);
|
|
overlayState.setState(() {});
|
|
}
|
|
|
|
void removeLoadingNotifier() {
|
|
if (_overlayEntry != null) {
|
|
_overlayEntry?.remove();
|
|
_overlayEntry = null;
|
|
}
|
|
}
|
|
}
|