git-touch-android-ios-app/lib/scaffolds/refresh_stateful.dart

87 lines
1.9 KiB
Dart
Raw Normal View History

2019-09-25 11:06:36 +02:00
import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
2019-10-02 08:58:11 +02:00
import 'package:git_touch/scaffolds/common.dart';
2019-09-25 11:06:36 +02:00
import 'package:git_touch/scaffolds/utils.dart';
class RefreshStatefulScaffold<T> extends StatefulWidget {
final Widget title;
2019-11-02 13:54:23 +01:00
final Widget Function(T data, void Function(VoidCallback fn) setState)
bodyBuilder;
2019-09-30 11:13:12 +02:00
final Future<T> Function() fetchData;
2019-11-02 13:54:23 +01:00
final Widget Function(T data, void Function(VoidCallback fn) setState)
2019-09-30 11:13:12 +02:00
actionBuilder;
2019-12-07 09:52:54 +01:00
final canRefresh;
2019-09-25 11:06:36 +02:00
RefreshStatefulScaffold({
@required this.title,
@required this.bodyBuilder,
2019-09-30 11:13:12 +02:00
@required this.fetchData,
this.actionBuilder,
2019-12-07 09:52:54 +01:00
this.canRefresh = true,
2019-09-25 11:06:36 +02:00
});
@override
2019-12-03 04:26:08 +01:00
_RefreshStatefulScaffoldState<T> createState() =>
2019-09-25 11:06:36 +02:00
_RefreshStatefulScaffoldState();
}
class _RefreshStatefulScaffoldState<T>
extends State<RefreshStatefulScaffold<T>> {
bool _loading;
2019-09-30 11:13:12 +02:00
T _data;
2019-09-25 11:06:36 +02:00
String _error = '';
@override
void initState() {
super.initState();
_refresh();
2019-11-02 13:54:23 +01:00
setState(() {});
2019-09-25 11:06:36 +02:00
}
Future<void> _refresh() async {
try {
setState(() {
_error = '';
_loading = true;
});
2019-09-30 11:13:12 +02:00
_data = await widget.fetchData();
2019-09-25 11:06:36 +02:00
} catch (err) {
_error = err.toString();
throw err;
} finally {
if (mounted) {
setState(() {
_loading = false;
});
}
}
}
2019-10-03 04:01:54 +02:00
Widget get _action {
2019-09-30 11:13:12 +02:00
if (widget.actionBuilder == null) return null;
2019-11-02 13:54:23 +01:00
return widget.actionBuilder(_data, setState);
2019-09-25 11:06:36 +02:00
}
@override
Widget build(BuildContext context) {
2019-12-07 09:52:54 +01:00
Widget child = ErrorLoadingWrapper(
bodyBuilder: () => widget.bodyBuilder(_data, setState),
error: _error,
loading: _data == null,
reload: _refresh,
);
if (widget.canRefresh) {
child = RefreshWrapper(
onRefresh: _refresh,
body: child,
);
}
2019-09-25 11:06:36 +02:00
return CommonScaffold(
title: widget.title,
2019-12-07 09:52:54 +01:00
body: child,
2019-10-03 04:01:54 +02:00
action: _action,
2019-09-25 11:06:36 +02:00
);
}
}