64 lines
1.8 KiB
Dart
64 lines
1.8 KiB
Dart
part of '../async_action_button.dart';
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typedef AsyncActionCallback = Future<void> Function();
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typedef AsyncErrorBuilder = String Function(Object error);
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/// Wraps [action] with a try/catch that pops up an [InfoDialog] on failure
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/// (using [errorBuilder] or the default error mapper). Returns `true` on
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/// success, `false` on caught failure.
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Future<bool> runWithErrorDialog(
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BuildContext context,
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AsyncActionCallback action, {
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AsyncErrorBuilder? errorBuilder,
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}) async {
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try {
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await action();
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return true;
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} catch (e) {
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if (!context.mounted) return false;
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final message = errorBuilder != null ? errorBuilder(e) : errorToUserMessage(e);
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final details = errorToTechnicalDetails(e);
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final body = details != null && details != message ? '$message\n\n$details' : message;
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InfoDialog.show(context, body, copyable: true, title: 'Fehler');
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return false;
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}
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}
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/// Reusable busy/error state for the async-button family. Multiple buttons
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/// can share the same controller (e.g. a parent toolbar wanting to disable
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/// while any one child is running).
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class AsyncActionController extends ChangeNotifier {
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bool _busy = false;
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String? _error;
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bool get busy => _busy;
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String? get error => _error;
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Future<bool> run(
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AsyncActionCallback action, {
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AsyncErrorBuilder? errorBuilder,
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}) async {
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if (_busy) return false;
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_busy = true;
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_error = null;
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notifyListeners();
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try {
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await action();
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_busy = false;
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notifyListeners();
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return true;
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} catch (e) {
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_busy = false;
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_error = errorBuilder != null ? errorBuilder(e) : errorToUserMessage(e);
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notifyListeners();
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return false;
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}
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}
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void clearError() {
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if (_error == null) return;
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_error = null;
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notifyListeners();
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}
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}
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