EventListener<T> constructor

EventListener<T>(EventCallback<T> onEvent)

Used by EventRule for triggering onEvent callback

Example

final event1 = Event<int>("int");

EventRule<int>(event1, targets: [

  // On Receiving `event1` call `onEvent`
  // with `payload` of type [int]
  EventListener(
    (payload) {
      print("integer event: $payload");
    },
  ),
]);


....

// Release Event
EventBus.emit(event1.createPayload(100))

// prints "integer event: 100"

See Also:

• OneOffEventListener : An EventListener which only calls its onEvent one time.
• DebouncedEventListener : An EventListenr which delays its calls to prevent frequent calls.

Implementation

EventListener(EventCallback<T> onEvent) : _onEvent = onEvent;