onListen method

void onListen(StreamSubscriptionUnit<T> child)

Implementation

void onListen(StreamSubscriptionUnit<T> child) {
  if (_listenFirst) return;
  if (shouldCache) {
    if (_caches != null) {
      for (var item in _caches!) {
        child.sendData(item);
      }
      return;
    }
  }
  _childResume(child);
}