56 lines
1.5 KiB
Dart
56 lines
1.5 KiB
Dart
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import 'package:flutter/material.dart';
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import 'package:flutter/widgets.dart';
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class ViewWithProgressIndicator extends StatefulWidget {
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final AsyncSnapshot snapshot;
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final Widget child;
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final double progressIndicatorSize;
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final EdgeInsets padding;
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const ViewWithProgressIndicator(
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{Key? key,
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required this.snapshot,
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required this.child,
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this.progressIndicatorSize = 100,
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this.padding = const EdgeInsets.all(0)})
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: super(key: key);
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@override
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_ViewWithProgressIndicatorState createState() =>
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_ViewWithProgressIndicatorState();
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}
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class _ViewWithProgressIndicatorState extends State<ViewWithProgressIndicator> {
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@override
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Widget build(BuildContext context) {
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switch (widget.snapshot.connectionState) {
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case ConnectionState.none:
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case ConnectionState.waiting:
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return Container(
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alignment: Alignment.center,
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padding: widget.padding,
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child: Center(
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child: SizedBox(
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width: widget.progressIndicatorSize,
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height: widget.progressIndicatorSize,
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child: const CircularProgressIndicator(),
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),
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),
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);
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default:
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if (widget.snapshot.hasError) {
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return Center(
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child: Text(widget.snapshot.error.toString()),
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);
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}
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if (!widget.snapshot.hasData) {
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return const Center(
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child: Text("No data"),
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);
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} else {
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return widget.child;
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}
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}
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}
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}
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