invoice/lib/utils/completers.dart

87 lines
2.0 KiB
Dart

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_styled_toast/flutter_styled_toast.dart';
import 'package:invoiceninja_flutter/ui/app/dialogs/error_dialog.dart';
Completer<T> snackBarCompleter<T>(BuildContext context, String message,
{bool shouldPop = false}) {
final Completer<T> completer = Completer<T>();
completer.future.then((_) {
if (shouldPop && Navigator.of(context).canPop()) {
Navigator.of(context).pop();
}
showToast(message);
}).catchError((Object error) {
if (shouldPop && Navigator.of(context).canPop()) {
Navigator.of(context).pop();
}
showDialog<ErrorDialog>(
context: context,
builder: (BuildContext context) {
return ErrorDialog(error);
});
});
return completer;
}
Completer<Null> popCompleter(BuildContext context, dynamic result) {
final Completer<Null> completer = Completer<Null>();
completer.future.then((_) {
Navigator.of(context).pop<dynamic>(result);
}).catchError((Object error) {
showDialog<ErrorDialog>(
context: context,
builder: (BuildContext context) {
return ErrorDialog(error);
});
});
return completer;
}
Completer<Null> errorCompleter(BuildContext context) {
final Completer<Null> completer = Completer<Null>();
completer.future.catchError((Object error) {
showDialog<ErrorDialog>(
context: context,
builder: (BuildContext context) {
return ErrorDialog(error);
});
});
return completer;
}
// https://stackoverflow.com/a/55119208/497368
class Debouncer {
Debouncer({this.milliseconds});
static bool isDebouncing = false;
final int milliseconds;
VoidCallback action;
Timer _timer;
void run(VoidCallback action) {
if (milliseconds == null) {
action();
return;
}
if (_timer != null) {
_timer.cancel();
}
Debouncer.isDebouncing = true;
_timer = Timer(Duration(milliseconds: milliseconds), () {
Debouncer.isDebouncing = false;
action();
});
}
}