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loadable error screen, reload actions, autoreload

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This commit is contained in:
Elias Müller
2024-05-11 14:20:00 +02:00
parent b171fef348
commit 9fa711e460
19 changed files with 533 additions and 183 deletions
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63
lib/state/app/infrastructure/loadableState/view/loadable_state_consumer.dart
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@ -2,10 +2,14 @@ import 'package:bloc/bloc.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../../utilityWidgets/bloc_module.dart';
import '../../utilityWidgets/loadableHydratedBloc/loadable_hydrated_bloc_event.dart';
import '../bloc/loadable_state_bloc.dart';
import '../bloc/loadable_state_state.dart';
import '../loadable_state.dart';
import 'loadable_state_background_loading.dart';
import 'loadable_state_error_bar.dart';
import 'loadable_state_error_screen.dart';
import 'loadable_state_primary_loading.dart';
class LoadableStateConsumer<TController extends Bloc<LoadableHydratedBlocEvent<TState>, LoadableState<TState>>, TState> extends StatelessWidget {
@ -17,26 +21,51 @@ class LoadableStateConsumer<TController extends Bloc<LoadableHydratedBlocEvent<T
@override
Widget build(BuildContext context) {
var loadableState = context.watch<TController>().state;
var childWidget = RefreshIndicator(
onRefresh: () {
loadableState.error != null && loadableState.error!.retry != null
? loadableState.error!.retry!()
: null;
return Future.value();
},
child: SizedBox(
height: MediaQuery.of(context).size.height,
child: loadableState.showContent()
? child(loadableState.data, loadableState.isLoading)
: const SizedBox.shrink(),
),
// SingleChildScrollView( // TODO not all childs are reloadable
// physics: const AlwaysScrollableScrollPhysics(),
// child:
// ),
);
return Column(
children: [
LoadableStateErrorBar(visible: loadableState.showError()),
Expanded(
child: Stack(
children: [
LoadableStatePrimaryLoading(visible: loadableState.showPrimaryLoading()),
LoadableStateBackgroundLoading(visible: loadableState.showBackgroundLoading()),
return BlocModule<LoadableStateBloc, LoadableStateState>(
create: (context) => LoadableStateBloc(),
child: (context, bloc, state) {
bloc.loadingError = loadableState.error;
return Column(
children: [
LoadableStateErrorBar(visible: loadableState.showErrorBar()),
Expanded(
child: Stack(
children: [
LoadableStatePrimaryLoading(visible: loadableState.showPrimaryLoading()),
LoadableStateBackgroundLoading(visible: loadableState.showBackgroundLoading()),
LoadableStateErrorScreen(visible: loadableState.showError()),
AnimatedOpacity(
opacity: loadableState.showContent() ? 1.0 : 0.0,
duration: animationDuration,
curve: Curves.easeInOut,
child: loadableState.showContent() ? child(loadableState.data, loadableState.isLoading) : const SizedBox.shrink()
AnimatedOpacity(
opacity: loadableState.showContent() ? 1.0 : 0.0,
duration: animationDuration,
curve: Curves.easeInOut,
child: childWidget,
),
],
),
],
),
)
],
)
],
);
}
);
}
}

85
lib/state/app/infrastructure/loadableState/view/loadable_state_error_bar.dart
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@ -1,9 +1,7 @@
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import '../../utilityWidgets/bloc_module.dart';
import '../bloc/loadable_state_bloc.dart';
import '../bloc/loadable_state_state.dart';
class LoadableStateErrorBar extends StatelessWidget {
final bool visible;
@ -12,48 +10,49 @@ class LoadableStateErrorBar extends StatelessWidget {
final Duration animationDuration = const Duration(milliseconds: 200);
@override
Widget build(BuildContext context) => BlocModule<LoadableStateBloc, LoadableStateState>(
create: (context) => LoadableStateBloc(),
child: (context, state) => AnimatedSize(
duration: animationDuration,
child: AnimatedSwitcher(
duration: animationDuration,
transitionBuilder: (Widget child, Animation<double> animation) => SlideTransition(
position: Tween<Offset>(
begin: const Offset(0.0, -1.0),
end: Offset.zero,
).animate(animation),
child: child,
),
child: Visibility(
key: Key(visible.hashCode.toString()),
visible: visible,
replacement: const SizedBox(width: double.infinity),
child: Builder(
builder: (context) {
var controller = context.watch<LoadableStateBloc>();
var status = controller.connectivityStatusKnown() && !controller.isConnected()
? (icon: Icons.wifi_off_outlined, text: 'Offline', color: Colors.grey.shade600)
: (icon: Icons.wifi_find_outlined, text: 'Verbindung fehlgeschlagen', color: Theme.of(context).primaryColor);
Widget build(BuildContext context) => AnimatedSize(
duration: animationDuration,
child: AnimatedSwitcher(
duration: animationDuration,
transitionBuilder: (Widget child, Animation<double> animation) => SlideTransition(
position: Tween<Offset>(
begin: const Offset(0.0, -1.0),
end: Offset.zero,
).animate(animation),
child: child,
),
child: Visibility(
key: Key(visible.hashCode.toString()),
visible: visible,
replacement: const SizedBox(width: double.infinity),
child: Builder(
builder: (context) {
var bloc = context.watch<LoadableStateBloc>();
var status = (
icon: bloc.connectionIcon(),
text: bloc.connectionText(),
color: bloc.connectivityStatusKnown() && !bloc.isConnected()
? Colors.grey.shade600
: Theme.of(context).primaryColor
);
return Container(
height: 20,
decoration: BoxDecoration(
color: status.color,
),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(status.icon, size: 14),
const SizedBox(width: 10),
Text(status.text, style: const TextStyle(fontSize: 12))
],
),
);
},
)
)
),
return Container(
height: 20,
decoration: BoxDecoration(
color: status.color,
),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(status.icon, size: 14),
const SizedBox(width: 10),
Text(status.text, style: const TextStyle(fontSize: 12))
],
),
);
},
)
)
),
);
}

42
lib/state/app/infrastructure/loadableState/view/loadable_state_error_screen.dart Normal file
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@ -0,0 +1,42 @@
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../bloc/loadable_state_bloc.dart';
import 'loadable_state_consumer.dart';
class LoadableStateErrorScreen extends StatelessWidget {
final bool visible;
const LoadableStateErrorScreen({required this.visible, super.key});
@override
Widget build(BuildContext context) {
final bloc = context.watch<LoadableStateBloc>();
return AnimatedOpacity(
opacity: visible ? 1.0 : 0.0,
duration: LoadableStateConsumer.animationDuration,
curve: Curves.easeInOut,
child: !visible ? null : Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Icon(bloc.connectionIcon(), size: 40),
const SizedBox(height: 10),
Text(bloc.connectionText(), style: const TextStyle(fontSize: 20)),
if(bloc.allowRetry()) ...[
const SizedBox(height: 10),
TextButton(onPressed: () => bloc.loadingError!.retry!(), child: const Text('Erneut versuschen')),
],
if(bloc.showErrorMessage()) ...[
const SizedBox(height: 40),
Text(bloc.loadingError!.message, style: TextStyle(color: Theme.of(context).hintColor, fontSize: 12))
],
],
),
),
);
}
}