nextcloud/lib/private/legacy/OC_Hook.php

151 lines
4.3 KiB
PHP
Raw Normal View History

2011-07-27 21:07:28 +04:00
<?php
/**
2016-07-21 18:07:57 +03:00
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
2015-03-26 13:44:34 +03:00
* @author Bart Visscher <bartv@thisnet.nl>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
2015-03-26 13:44:34 +03:00
* @author Jakob Sack <mail@jakobsack.de>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
2015-03-26 13:44:34 +03:00
* @author Morris Jobke <hey@morrisjobke.de>
2016-07-21 19:13:36 +03:00
* @author Robin Appelman <robin@icewind.nl>
2016-01-12 17:02:16 +03:00
* @author Robin McCorkell <robin@mccorkell.me.uk>
2015-03-26 13:44:34 +03:00
* @author Sam Tuke <mail@samtuke.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
2015-03-26 13:44:34 +03:00
*
2011-07-27 21:07:28 +04:00
*/
/**
* @deprecated 18.0.0 use events and the \OCP\EventDispatcher\IEventDispatcher service
*/
class OC_Hook {
public static $thrownExceptions = [];
private static $registered = [];
2011-07-27 21:07:28 +04:00
/**
* connects a function to a hook
2015-04-02 18:53:40 +03:00
*
* @param string $signalClass class name of emitter
* @param string $signalName name of signal
* @param string|object $slotClass class name of slot
* @param string $slotName name of slot
2012-09-23 04:39:11 +04:00
* @return bool
2011-07-27 21:07:28 +04:00
*
* This function makes it very easy to connect to use hooks.
*
* TODO: write example
*/
public static function connect($signalClass, $signalName, $slotClass, $slotName) {
2013-02-22 20:21:57 +04:00
// If we're trying to connect to an emitting class that isn't
2013-02-06 21:43:03 +04:00
// yet registered, register it
if (!array_key_exists($signalClass, self::$registered)) {
self::$registered[$signalClass] = [];
2011-07-27 21:07:28 +04:00
}
2013-02-22 20:21:57 +04:00
// If we're trying to connect to an emitting method that isn't
2013-02-06 21:43:03 +04:00
// yet registered, register it with the emitting class
if (!array_key_exists($signalName, self::$registered[$signalClass])) {
self::$registered[$signalClass][$signalName] = [];
2011-07-27 21:07:28 +04:00
}
2013-02-22 20:21:57 +04:00
// don't connect hooks twice
2015-04-02 18:53:40 +03:00
foreach (self::$registered[$signalClass][$signalName] as $hook) {
if ($hook['class'] === $slotClass and $hook['name'] === $slotName) {
2014-06-05 23:08:30 +04:00
return false;
}
}
2013-02-06 21:43:03 +04:00
// Connect the hook handler to the requested emitter
self::$registered[$signalClass][$signalName][] = [
"class" => $slotClass,
"name" => $slotName
];
2013-02-22 20:21:57 +04:00
2011-07-27 21:07:28 +04:00
// No chance for failure ;-)
return true;
}
/**
* emits a signal
*
* @param string $signalClass class name of emitter
* @param string $signalName name of signal
2014-05-13 02:27:36 +04:00
* @param mixed $params default: array() array with additional data
2015-01-16 21:31:15 +03:00
* @return bool true if slots exists or false if not
* @throws \OC\HintException
* @throws \OC\ServerNotAvailableException Emits a signal. To get data from the slot use references!
2011-07-27 21:07:28 +04:00
*
* TODO: write example
*/
public static function emit($signalClass, $signalName, $params = []) {
2013-02-22 20:21:57 +04:00
2013-02-06 21:43:03 +04:00
// Return false if no hook handlers are listening to this
// emitting class
if (!array_key_exists($signalClass, self::$registered)) {
2011-07-27 21:07:28 +04:00
return false;
}
2013-02-22 20:21:57 +04:00
2013-02-06 21:43:03 +04:00
// Return false if no hook handlers are listening to this
// emitting method
if (!array_key_exists($signalName, self::$registered[$signalClass])) {
2011-07-27 21:07:28 +04:00
return false;
}
2013-02-22 20:21:57 +04:00
2011-07-27 21:07:28 +04:00
// Call all slots
foreach (self::$registered[$signalClass][$signalName] as $i) {
try {
call_user_func([ $i["class"], $i["name"] ], $params);
} catch (Exception $e) {
self::$thrownExceptions[] = $e;
\OC::$server->getLogger()->logException($e);
if ($e instanceof \OC\HintException) {
throw $e;
}
if ($e instanceof \OC\ServerNotAvailableException) {
2015-04-01 18:12:28 +03:00
throw $e;
}
}
2011-07-27 21:07:28 +04:00
}
return true;
}
2012-05-11 22:33:23 +04:00
/**
* clear hooks
* @param string $signalClass
* @param string $signalName
2012-05-11 22:33:23 +04:00
*/
public static function clear($signalClass='', $signalName='') {
if ($signalClass) {
if ($signalName) {
self::$registered[$signalClass][$signalName]=[];
} else {
self::$registered[$signalClass]=[];
2012-05-11 22:33:23 +04:00
}
} else {
self::$registered=[];
2012-05-11 22:33:23 +04:00
}
}
/**
* DO NOT USE!
* For unit tests ONLY!
*/
public static function getHooks() {
return self::$registered;
}
2011-07-27 21:07:28 +04:00
}