constructor ListPathObserver


ListPathObserver(ObservableList<E> list, String path)

Source

ListPathObserver(this.list, String path)
    : _itemPath = path {

  // TODO(jmesserly): delay observation until we are observed.
  _sub = list.listChanges.listen((records) {
    for (var record in records) {
      _observeItems(record.addedCount - record.removed.length);
    }
    _scheduleReduce(null);
  });

  _observeItems(list.length);
  _reduce();
}