52 lines
1.5 KiB
Dart
52 lines
1.5 KiB
Dart
import 'package:didvan/models/enums.dart';
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import 'package:didvan/providers/core_provider.dart';
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import 'package:didvan/widgets/state_handlers/empty_connection.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_spinkit/flutter_spinkit.dart';
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class StateHandler<T extends CoreProvier> extends StatelessWidget {
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final T state;
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final Widget Function(BuildContext context, T state) builder;
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final VoidCallback onRetry;
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final bool enableEmptyState;
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final Widget? placeholder;
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final Widget? emptyState;
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final double topPadding;
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const StateHandler({
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Key? key,
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required this.builder,
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required this.onRetry,
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required this.state,
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this.emptyState,
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this.enableEmptyState = false,
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this.topPadding = 0,
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this.placeholder,
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}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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if (enableEmptyState && state.appState == AppState.idle) {
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return Container(
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padding: EdgeInsets.only(top: topPadding),
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alignment: Alignment.center,
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child: SingleChildScrollView(
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child: emptyState ?? const Text('Custom Widget Required!'),
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),
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);
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}
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switch (state.appState) {
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case AppState.idle:
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return builder(context, state);
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case AppState.busy:
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return placeholder ??
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SpinKitSpinningLines(
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color: Theme.of(context).colorScheme.primary,
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);
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case AppState.failed:
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return Center(child: EmptyConnection(onRetry: onRetry));
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default:
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return Container();
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}
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}
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}
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