onListen property

@override ControllerCallback? get onListen

The callback which is called when the stream is listened to.

May be set to null, in which case no callback will happen.

Implementation

@override
ControllerCallback? get onListen => _initializeLazy()!.onListen;

@override set onListen (void onListenHandler()?)

The callback which is called when the stream is listened to.

May be set to null, in which case no callback will happen.

Implementation

@override
set onListen(void onListenHandler()?) {
  _initializeLazy()!.onListen = onListenHandler;
}