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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* The PluginManager class is used alongside PluginObserver to implement
* the Observer Design Pattern.
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* This class implements the SplSubject interface
*
* @todo implement all methods
* @package PhpMyAdmin
* @link http://php.net/manual/en/class.splsubject.php
*
*/
class PluginManager implements SplSubject
{
/**
* Contains a list with all the plugins that attach to it
*
* @var type SplObjectStorage
*/
private $_storage;
/**
* Contains information about the current plugin state
*
* @var type string
*/
private $_status;
/**
* Constructor
* Initializes $_storage with an empty SplObjectStorage
*/
public function __construct()
{
$this->_storage = new SplObjectStorage();
}
/**
* Attaches an SplObserver so that it can be notified of updates
*
* @param SplObserver $observer The SplObserver to attach
*
* @return void
*/
function attach (SplObserver $observer )
{
$this->_storage->attach($observer);
}
/**
* Detaches an observer from the subject to no longer notify it of updates
*
* @param SplObserver $observer The SplObserver to detach
*
* @return void
*/
function detach (SplObserver $observer)
{
$this->_storage->detach($observer);
}
/**
* It is called after setStatus() was run by a certain plugin, and has
* the role of sending a notification to all of the plugins in $_storage,
* by calling the update() method for each of them.
*
* @todo implement
* @return void
*/
function notify ()
{
}
/* ~~~~~~~~~~~~~~~~~~~~ Getters and Setters ~~~~~~~~~~~~~~~~~~~~ */
/**
* Gets the list with all the plugins that attach to it
*
* @return type SplObjectStorage
*/
public function getStorage()
{
return $this->_storage;
}
/**
* Setter for $_storage
*
* @param SplObjectStorage $_storage the list with all the plugins that
* attach to it
*
* @return void
*/
public function setStorage($_storage)
{
$this->_storage = $_storage;
}
/**
* Gets the information about the current plugin state
* It is called by all the plugins in $_storage in their update() method
*
* @return type mixed
*/
public function getStatus()
{
return $this->_status;
}
/**
* Setter for $_status
* If a plugin changes its status, this has to be remembered in order to
* notify the rest of the plugins that they should update
*
* @param mixed $_status contains information about the current plugin state
*
* @return void
*/
public function setStatus($_status)
{
$this->_status = $_status;
}
}
?>