add method

T add(T updatedValue)

Implementation

T add(T updatedValue) {
  assert(!isClosed, 'Cannot add value to a closed computable.');

  _value = updatedValue;
  _updateIndex = _nextUpdateIndex++;

  // Check whether the event should be added to the controller.
  if (isClosed || (!_isFirstEvent && _value == _controllerValue && dedupe)) {
    return _value;
  }

  _controllerValue = _value;
  _isFirstEvent = false;

  if (!_eventScheduled) {
    _eventScheduled = true;
    Future.delayed(
      Duration.zero,
      () {
        if (hasListener) {
          _controller!.add(_value);
        }
        _eventScheduled = false;
      },
    );
  }

  // Notify all dependents that the computable's value has changed.
  for (final dependent in _dependents) {
    dependent._onDependencyChange(this);
  }

  return _value;
}