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<?php
/**
* @package FOF
* @copyright 2010-2017 Nicholas K. Dionysopoulos / Akeeba Ltd
* @license GNU GPL version 2 or later
*/
namespace FOF30\Event;
defined('_JEXEC') or die;
/**
* Interface Observable
*
* @codeCoverageIgnore
*/
interface Observable
{
/**
* Attaches an observer to the object
*
* @param Observer $observer The observer to attach
*
* @return Observable Ourselves, for chaining
*/
public function attach(Observer $observer);
/**
* Detaches an observer from the object
*
* @param Observer $observer The observer to detach
*
* @return Observable Ourselves, for chaining
*/
public function detach(Observer $observer);
/**
* Triggers an event in the attached observers
*
* @param string $event The event to attach
* @param array $args Arguments to the event handler
*
* @return array
*/
public function trigger($event, array $args = array());
}
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