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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zend-validator for the canonical source repository
* @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Session\Validator;
use Zend\Session\Storage\StorageInterface;
/**
* Base trait for validator chain implementations
*/
trait ValidatorChainTrait
{
/**
* @var StorageInterface
*/
protected $storage;
/**
* Retrieve session storage object
*
* @return StorageInterface
*/
public function getStorage()
{
return $this->storage;
}
/**
* Internal implementation for attaching a listener to the
* session validator chain.
*
* @param string $event
* @param callable $callback
* @param int $priority
* @return \Zend\Stdlib\CallbackHandler|callable
*/
private function attachValidator($event, $callback, $priority)
{
$context = null;
if ($callback instanceof ValidatorInterface) {
$context = $callback;
} elseif (is_array($callback)) {
$test = array_shift($callback);
if ($test instanceof ValidatorInterface) {
$context = $test;
}
array_unshift($callback, $test);
}
if ($context instanceof ValidatorInterface) {
$data = $context->getData();
$name = $context->getName();
$this->getStorage()->setMetadata('_VALID', [$name => $data]);
}
$listener = parent::attach($event, $callback, $priority);
return $listener;
}
}