/**
* Creates event stream
* @param string|array|\observr\State\Listener\ListenerInterface $listener
* @throws \InvalidArgumentException
*/
function __construct($listener)
{
if (is_string($listener)) {
$listener = Observer::listener($this, $listener);
}
if ($listener instanceof ListenerInterface && $listener instanceof NotifierAwareInterface) {
$this->listener = $listener;
} else {
throw new \InvalidArgumentException();
}
}
/**
* Detach observer from subject
* @param string $name
* @param callable $observer
*/
public function detach(callable $observer = null)
{
Observer::listener($this, 'on')->unwatch('on', $observer);
}
/**
* Remove subject state container
* @param mixed $name
*/
public function unsetState($name = null)
{
Observer::unsetState($this, $name);
}
/**
* Detach observer from subject
* @param string $name
*/
public function detach($name)
{
Observer::listener($this, $name)->unwatch($name);
}
