/**
* Auxiliary function to help detach all listeners provided by an object implementing EventListenerInterface
*
* @param \Cake\Event\EventListenerInterface $subscriber the subscriber to be detached
* @param string|null $eventKey optional event key name to unsubscribe the listener from
* @return void
*/
protected function _detachSubscriber(EventListenerInterface $subscriber, $eventKey = null)
{
$events = (array) $subscriber->implementedEvents();
if (!empty($eventKey) && empty($events[$eventKey])) {
return;
} elseif (!empty($eventKey)) {
$events = [$eventKey => $events[$eventKey]];
}
foreach ($events as $key => $function) {
if (is_array($function)) {
if (is_numeric(key($function))) {
foreach ($function as $handler) {
$handler = isset($handler['callable']) ? $handler['callable'] : $handler;
$this->off($key, [$subscriber, $handler]);
}
continue;
}
$function = $function['callable'];
}
$this->off($key, [$subscriber, $function]);
}
}
