Merge branch 'main' into issue-3911issue-3911

1 files changed, 0 insertions, 174 deletions

diff --git a/lib/classes/NotificationCenter.class.php b/lib/classes/NotificationCenter.class.php
deleted file mode 100644
index aaaa9e8..0000000
--- a/lib/classes/NotificationCenter.class.php
+++ /dev/null
@@ -1,174 +0,0 @@
-<?php
-# Lifter010: TODO
-/*
- * NotificationCenter.class.php - NotificationCenter class
- *
- * Copyright (c) 2009  Elmar Ludwig
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- */
-
-// ########################################################################
-//  MODULE DEFINITION
-/** @defgroup notifications Notifications */
-
-/**
- * Special Exception that can be thrown to veto an announced change.
- * Only some types of events support this (see documentation).
- */
-class NotificationVetoException extends Exception
-{
-}
-
-/**
- * The NotificationCenter class is the central event dispatcher
- * for Stud.IP. Objects interested in receiving notifications for
- * particular events need to register with the NotificationCenter:
- *
- * NotificationCenter::addObserver($this, 'update', 'shutdown');
- *
- * Event notifications are sent via the postNotification() method:
- *
- * NotificationCenter::postNotification('shutdown', $sender);
- */
-class NotificationCenter
-{
-    /**
-     * array of registered notification observers
-     */
-    private static $observers = [];
-
-    /**
-     * Register an object to be notified. The same object may be
-     * registered several times (e.g. for different notifications).
-     * The event name may contain shell-style wildcards (like '*').
-     *
-     * @param object $observer  object to be notified
-     * @param string $method    method that will be called
-     * @param string $event     name of event (may be NULL)
-     * @param mixed  $object    subject to observe (may be NULL)
-     */
-    public static function addObserver($observer, $method, $event, $object = NULL)
-    {
-        if ($event === NULL) {
-            $event = '';
-        }
-
-        $predicate = null;
-
-        if ($object) {
-            $predicate = is_callable($object)
-                ? $object
-                : function ($other) use ($object) {
-                    return $object === $other;
-                  };
-        }
-
-        self::$observers[$event][] = [
-            'predicate' => $predicate,
-            'observer'  => [$observer, $method]
-        ];
-    }
-
-    /**
-     * Remove an object registered with the NotificationCenter.
-     * Trying to remove an observer that was not registered is
-     * allowed and has no effect.
-     *
-     * @param object $observer  object to be removed
-     * @param string $event     name of event (may be NULL)
-     * @param mixed  $object    subject to observe (may be NULL)
-     */
-    public static function removeObserver($observer, $event = NULL, $object = NULL)
-    {
-        if ($event === NULL) {
-            $events = array_keys(self::$observers);
-        } else if (isset(self::$observers[$event])) {
-            $events = [$event];
-        } else {
-            return;
-        }
-
-        foreach ($events as $event) {
-            foreach (self::$observers[$event] as $index => $list) {
-                if ($object === NULL
-                    || $list['predicate'] && $list['predicate']($object)) {
-
-                    if ($list['observer'][0] === $observer) {
-                        unset(self::$observers[$event][$index]);
-                    }
-                }
-            }
-        }
-    }
-
-    /**
-     * Post an event notification to all registered observers.
-     * Only observers registered for this event type and subject
-     * are notified.
-     *
-     * @param string $event     name of this notification
-     * @param mixed  $object    subject of this notification
-     * @param mixed  $user_data additional information (optional)
-     *
-     * @throws NotificationVetoException  on observer veto
-     */
-    public static function postNotification($event, $object, $user_data = null)
-    {
-        $current_observers = [];
-        foreach (self::$observers as $e => $l) {
-            if ($e === '' || fnmatch($e, $event, FNM_NOESCAPE)) {
-                $current_observers = array_merge($current_observers, $l);
-            }
-        }
-
-        foreach ($current_observers as $list) {
-            if (!$list['predicate'] || $list['predicate']($object)) {
-                call_user_func($list['observer'], $event, $object, $user_data);
-            }
-        }
-    }
-
-    /**
-     * Convenience method that uses a jQuery like structure for event
-     * registration by closures.
-     *
-     * @param string   $event
-     * @param Callable $callback
-     * @param mixed    $object
-     * @since Stud.IP 4.2
-     */
-    public static function on($event, Callable $callback, $object = null)
-    {
-        if ($callback instanceof Closure || is_object($callback)) {
-            static::addObserver($callback, '__invoke', $event, $object);
-        } elseif (is_array($callback)) {
-            static::addObserver($callback[0], $callback[1], $event, $object);
-        } elseif (is_string($callback)) {
-            throw new Exception('Strings as callable may not be passed to ' . __METHOD__);
-        }
-    }
-
-    /**
-     * Convenience method that uses a jQuery like structure for event
-     * unregistration by closures.
-     *
-     * @param string   $event
-     * @param Callable $callback
-     * @param mixed    $object
-     * @since Stud.IP 4.2
-     */
-    public static function off($event, Callable $callback, $object = null)
-    {
-        if ($callback instanceof Closure || is_object($callback)) {
-            static::removeObserver($callback, $event, $object);
-        } elseif (is_array($callback)) {
-            static::removeObserver($callback[0], $event, $object);
-        } elseif (is_string($callback)) {
-            throw new Exception('Strings as callable may not be passed to ' . __METHOD__);
-        }
-    }
-}