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<?php |
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/** |
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* @package Joomla.Platform |
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* @subpackage Observer |
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* |
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* @copyright Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved. |
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* @license GNU General Public License version 2 or later; see LICENSE |
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*/ |
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defined('JPATH_PLATFORM') or die; |
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/** |
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* Observer mapping pattern implementation for Joomla |
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* |
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* @since 3.1.2 |
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*/ |
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class JObserverMapper |
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{ |
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/** |
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* Array: array( JObservableInterface_classname => array( JObserverInterface_classname => array( paramname => param, .... ) ) ) |
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* |
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* @var array |
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* @since 3.1.2 |
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*/ |
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protected static $observations = array(); |
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/** |
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* Adds a mapping to observe $observerClass subjects with $observableClass observer/listener, attaching it on creation with $params |
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* on $observableClass instance creations |
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* |
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* @param string $observerClass The name of the observer class (implementing JObserverInterface) |
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* @param string $observableClass The name of the observable class (implementing JObservableInterface) |
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* @param array|boolean $params The params to give to the JObserverInterface::createObserver() function, or false to remove mapping |
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* |
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* @return void |
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* |
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* @since 3.1.2 |
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*/ |
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public static function addObserverClassToClass($observerClass, $observableClass, $params = array()) |
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{ |
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if ($params !== false) |
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{ |
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static::$observations[$observableClass][$observerClass] = $params; |
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} |
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else |
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{ |
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unset(static::$observations[$observableClass][$observerClass]); |
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} |
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} |
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/** |
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* Attaches all applicable observers to an $observableObject |
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* |
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* @param JObservableInterface $observableObject The observable subject object |
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* |
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* @return void |
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* |
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* @since 3.1.2 |
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*/ |
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public static function attachAllObservers(JObservableInterface $observableObject) |
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{ |
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$observableClass = get_class($observableObject); |
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while ($observableClass != false) |
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{ |
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// Attach applicable Observers for the class to the Observable subject: |
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if (isset(static::$observations[$observableClass])) |
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{ |
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foreach (static::$observations[$observableClass] as $observerClass => $params) |
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{ |
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// Attach an Observer to the Observable subject: |
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/** |
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* @var JObserverInterface $observerClass |
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*/ |
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$observerClass::createObserver($observableObject, $params); |
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} |
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} |
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// Get parent class name (or false if none), and redo the above on it: |
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$observableClass = get_parent_class($observableClass); |
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} |
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} |
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} |
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redCOMPONENT-COM /
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