attachDriver method

void attachDriver(VrInputDriver driver)

Attaches a community driver and binds its sink to VrInputDriver.source.

Implementation

void attachDriver(VrInputDriver driver) {
  _ensureAlive();
  for (final registration in _drivers) {
    if (identical(registration.driver, driver)) {
      throw StateError('VrInputDriver is already attached.');
    }
  }

  final registration = _DriverRegistration(
    driver,
    _BoundInputSink(
      this,
      driver.source,
      driver is VrInputPrioritizedDriver
          ? (driver as VrInputPrioritizedDriver).priority
          : priorityOf(driver.source),
    ),
  );
  _drivers.add(registration);
  try {
    driver.attach(registration.sink);
  } catch (_) {
    registration.sink._attached = false;
    _drivers.removeLast();
    rethrow;
  }
}