hasEventListener method

bool hasEventListener(
  1. String type,
  2. Function listener
)
inherited

type - The type of event to listen to.

listener - The function that gets called when the event is fired.

Checks if listener is added to an event type.

Implementation

bool hasEventListener(String type, Function listener) {
  if (_listeners == null) return false;
  final listeners = _listeners!;
  return listeners[type] != null && listeners[type]!.contains(listener);
}