addChangeListener method

StreamSubscription<CollectionChangeEvent<K, V>> addChangeListener(
  1. OnChange<CollectionChangeEvent<K, V>> onChange
)

Registers a new StreamSubscription that provides a CollectionChangeEvent denoting when an element has been added, removed, or updated in the collection.

Implementation

StreamSubscription<CollectionChangeEvent<K, V>> addChangeListener(
    OnChange<CollectionChangeEvent<K, V>> onChange) {
  _changeSubscriptions.add(
    _changeNotifier.stream.asBroadcastStream().listen(onChange),
  );

  return _changeSubscriptions.last;
}