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/
http/
guitar.1/
libraries/
joomla/
base/
- drwxr-xr-x
|
Viewing file:  observable.php (3.66 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
<?php
/**
* @package Joomla.Platform
* @subpackage Base
*
* @copyright Copyright (C) 2005 - 2012 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* Abstract observable class to implement the observer design pattern
*
* @package Joomla.Platform
* @subpackage Base
* @since 11.1
* @deprecated 12.3
* @codeCoverageIgnore
*/
class JObservable extends JObject
{
/**
* An array of Observer objects to notify
*
* @var array
* @since 11.1
* @deprecated 12.3
*/
protected $_observers = array();
/**
* The state of the observable object
*
* @var mixed
* @since 11.1
* @deprecated 12.3
*/
protected $_state = null;
/**
* A multi dimensional array of [function][] = key for observers
*
* @var array
* @since 11.1
* @deprecated 12.3
*/
protected $_methods = array();
/**
* Constructor
*
* Note: Make Sure it's not directly instantiated
*
* @deprecated 12.3
*/
public function __construct()
{
$this->_observers = array();
}
/**
* Get the state of the JObservable object
*
* @return mixed The state of the object.
*
* @since 11.1
* @deprecated 12.3
*/
public function getState()
{
return $this->_state;
}
/**
* Update each attached observer object and return an array of their return values
*
* @return array Array of return values from the observers
*
* @since 11.1
* @deprecated 12.3
*/
public function notify()
{
// Iterate through the _observers array
foreach ($this->_observers as $observer)
{
$return[] = $observer->update();
}
return $return;
}
/**
* Attach an observer object
*
* @param object $observer An observer object to attach
*
* @return void
*
* @since 11.1
* @deprecated 12.3
*/
public function attach($observer)
{
if (is_array($observer))
{
if (!isset($observer['handler']) || !isset($observer['event']) || !is_callable($observer['handler']))
{
return;
}
// Make sure we haven't already attached this array as an observer
foreach ($this->_observers as $check)
{
if (is_array($check) && $check['event'] == $observer['event'] && $check['handler'] == $observer['handler'])
{
return;
}
}
$this->_observers[] = $observer;
end($this->_observers);
$methods = array($observer['event']);
}
else
{
if (!($observer instanceof JObserver))
{
return;
}
// Make sure we haven't already attached this object as an observer
$class = get_class($observer);
foreach ($this->_observers as $check)
{
if ($check instanceof $class)
{
return;
}
}
$this->_observers[] = $observer;
$methods = array_diff(get_class_methods($observer), get_class_methods('JPlugin'));
}
$key = key($this->_observers);
foreach ($methods as $method)
{
$method = strtolower($method);
if (!isset($this->_methods[$method]))
{
$this->_methods[$method] = array();
}
$this->_methods[$method][] = $key;
}
}
/**
* Detach an observer object
*
* @param object $observer An observer object to detach.
*
* @return boolean True if the observer object was detached.
*
* @since 11.1
* @deprecated 12.3
*/
public function detach($observer)
{
// Initialise variables.
$retval = false;
$key = array_search($observer, $this->_observers);
if ($key !== false)
{
unset($this->_observers[$key]);
$retval = true;
foreach ($this->_methods as &$method)
{
$k = array_search($key, $method);
if ($k !== false)
{
unset($method[$k]);
}
}
}
return $retval;
}
}
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