Loading items with isolate

loading_items_with_isolate.dart

/// This method is the entry point to the operation
Future<void> loadItemsWithIsolate() async {
  /// We start the frame counter before the whole operation
  _startFpsMeter();
  isLoading = true;
  notifyListeners();

  /// We start counting the request time
  bench.startTimer('Load items in separate isolate');

  /// Sending an event to Backend
  send(Events.startLoadingItems);
}

/// The [Events.loadingItems] event handler for updating the request time from the isolate
void _middleLoadingEvent() {
  final double time = bench.endTimer('Load items in separate isolate');
  requestDurations.add(time);
  bench.startTimer('Load items in separate isolate');
}

/// The [Events.endLoadingItems] terminating event handler from the isolate
Future<void> _endLoadingEvents(List<Item> items) async {
  this.items.clear();

  /// Updating data in reactive state
  this.items.addAll(items);

  /// Finishing counting request times
  final double time = bench.endTimer('Load items in separate isolate');
  requestDurations.add(time);
  isLoading = false;
  notifyListeners();

  /// Stop the frame counter
  _stopFpsMeter();
  requestDurations.clear();
}