onCancel property

ControllerCancelCallback onCancel
override

The callback which is called when the stream is canceled.

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

Implementation

@override
ControllerCancelCallback get onCancel => _controller.onCancel;
void onCancel= (void onCancelHandler())
override

Implementation

@override
set onCancel(void Function() onCancelHandler) {
  _controller.onCancel = onCancelHandler;
}