<?php
/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */

namespace Zend\EventManager;

/**
 * Provides logic to easily create aggregate listeners, without worrying about
 * manually detaching events
 */
trait ListenerAggregateTrait
{
    /**
     * @var \Zend\Stdlib\CallbackHandler[]
     */
    protected $listeners = [];

    /**
     * {@inheritDoc}
     */
    public function detach(EventManagerInterface $events)
    {
        foreach ($this->listeners as $index => $callback) {
            if ($events->detach($callback)) {
                unset($this->listeners[$index]);
            }
        }
    }
}
