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<?php
/**
* Copyright 2014-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file LICENSE for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @category Horde
* @copyright 2014-2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Imap_Client
*/
/**
* Handle IMAP alerts sent from the server.
*
* @author Michael Slusarz <slusarz@horde.org>
* @category Horde
* @copyright 2014-2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Imap_Client
* @since 2.24.0
*/
class Horde_Imap_Client_Base_Alerts
implements SplSubject
{
/**
* Alert data.
*
* @var object
*/
protected $_alert;
/**
* Observers.
*
* @var array
*/
protected $_observers = array();
/**
* Add an alert.
*
* @param string $alert The alert string.
* @param string $type The alert type.
*/
public function add($alert, $type = null)
{
$this->_alert = new stdClass;
$this->_alert->alert = $alert;
if (!is_null($type)) {
$this->_alert->type = $type;
}
$this->notify();
}
/**
* Returns the last alert received.
*
* @return object Alert information. Object with these properties:
* <pre>
* - alert: (string) Alert string.
* - type: (string) [OPTIONAL] Alert type.
* </pre>
*/
public function getLast()
{
return $this->_alert;
}
/* SplSubject methods. */
/**
*/
public function attach(SplObserver $observer)
{
$this->detach($observer);
$this->_observers[] = $observer;
}
/**
*/
public function detach(SplObserver $observer)
{
if (($key = array_search($observer, $this->_observers, true)) !== false) {
unset($this->_observers[$key]);
}
}
/**
* Notification is triggered internally whenever the object's internal
* data storage is altered.
*/
public function notify()
{
foreach ($this->_observers as $val) {
$val->update($this);
}
}
}