71 lines
1.5 KiB
PHP
71 lines
1.5 KiB
PHP
<?php
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/**
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* @package FOF
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* @copyright Copyright (c)2010-2022 Nicholas K. Dionysopoulos / Akeeba Ltd
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* @license GNU General Public License version 3, or later
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*/
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namespace FOF40\Event;
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defined('_JEXEC') || die;
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use ReflectionMethod;
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use ReflectionObject;
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class Observer
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{
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/** @var Observable The object to observe */
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protected $subject;
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protected $events;
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/**
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* Creates the observer and attaches it to the observable subject object
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*
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* @param Observable $subject The observable object to attach the observer to
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*/
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function __construct(Observable &$subject)
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{
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// Attach this observer to the subject
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$subject->attach($this);
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// Store a reference to the subject object
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$this->subject = $subject;
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}
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/**
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* Returns the list of events observable by this observer. Set the $this->events array manually for faster
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* processing, or let this method use reflection to return a list of all public methods.
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*
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* @return array
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*/
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public function getObservableEvents()
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{
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if (is_null($this->events))
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{
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// Assign an empty array to protect us from behaviours without any valid method
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$this->events = [];
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$reflection = new ReflectionObject($this);
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$methods = $reflection->getMethods(ReflectionMethod::IS_PUBLIC);
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foreach ($methods as $m)
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{
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if ($m->name == 'getObservableEvents')
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{
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continue;
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}
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if ($m->name == '__construct')
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{
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continue;
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}
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$this->events[] = $m->name;
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}
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}
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return $this->events;
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}
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}
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