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wgh19
2024-05-17 17:16:21 +08:00
parent a9bddd7def
commit 67ebe4e50b
7 changed files with 233 additions and 46 deletions
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72
lib/components/loading.dart
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@@ -13,6 +13,34 @@ abstract class LoadingState<T extends StatefulWidget, S extends Object> extends
Widget buildContent(BuildContext context, S data);
Widget? buildFrame(BuildContext context, Widget child) => null;
Widget buildLoading() {
return const Center(
child: ProgressRing(),
);
}
void retry() {
setState(() {
isLoading = true;
error = null;
});
loadData().then((value) {
if(value.success) {
setState(() {
isLoading = false;
data = value.data;
});
} else {
setState(() {
isLoading = false;
error = value.errorMessage!;
});
}
});
}
Widget buildError() {
return Center(
child: Column(
@@ -21,25 +49,7 @@ abstract class LoadingState<T extends StatefulWidget, S extends Object> extends
Text(error!),
const SizedBox(height: 12),
Button(
onPressed: () {
setState(() {
isLoading = true;
error = null;
});
loadData().then((value) {
if(value.success) {
setState(() {
isLoading = false;
data = value.data;
});
} else {
setState(() {
isLoading = false;
error = value.errorMessage!;
});
}
});
},
onPressed: retry,
child: const Text("Retry"),
)
],
@@ -69,15 +79,17 @@ abstract class LoadingState<T extends StatefulWidget, S extends Object> extends
@override
Widget build(BuildContext context) {
Widget child;
if(isLoading){
return const Center(
child: ProgressRing(),
);
child = buildLoading();
} else if (error != null){
return buildError();
child = buildError();
} else {
return buildContent(context, data!);
child = buildContent(context, data!);
}
return buildFrame(context, child) ?? child;
}
}
@@ -94,6 +106,8 @@ abstract class MultiPageLoadingState<T extends StatefulWidget, S extends Object>
Future<Res<List<S>>> loadData(int page);
Widget? buildFrame(BuildContext context, Widget child) => null;
Widget buildContent(BuildContext context, final List<S> data);
bool get isLoading => _isLoading || _isFirstLoading;
@@ -181,12 +195,16 @@ abstract class MultiPageLoadingState<T extends StatefulWidget, S extends Object>
@override
Widget build(BuildContext context) {
Widget child;
if(_isFirstLoading){
return buildLoading(context);
child = buildLoading(context);
} else if (_error != null){
return buildError(context, _error!);
child = buildError(context, _error!);
} else {
return buildContent(context, _data!);
child = buildContent(context, _data!);
}
return buildFrame(context, child) ?? child;
}
}