<?php
namespace League\Event;
class CallbackListener implements ListenerInterface
{
/**
* The callback.
*
* @var callable
*/
protected $callback;
/**
* Create a new callback listener instance.
*
* @param callable $callback
*/
public function __construct(callable $callback)
{
$this->callback = $callback;
}
/**
* Get the callback.
*
* @return callable
*/
public function getCallback()
{
return $this->callback;
}
/**
* {@inheritdoc}
*/
public function handle(AbstractEvent $event)
{
call_user_func_array($this->callback, func_get_args());
}
/**
* {@inheritdoc}
*/
public function isListener($listener)
{
if ($listener instanceof CallbackListener) {
$listener = $listener->getCallback();
}
return $this->callback === $listener;
}
}