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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
*
* @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/>
*
*/
namespace OC\Hooks;
/**
* Class ForwardingEmitter
*
* allows forwarding all listen calls to other emitters
*
* @package OC\Hooks
*/
abstract class ForwardingEmitter extends BasicEmitter {
/**
* @var \OC\Hooks\Emitter[] array
*/
private $forwardEmitters = [];
/**
* @param string $scope
* @param string $method
* @param callable $callback
*/
public function listen($scope, $method, callable $callback) {
parent::listen($scope, $method, $callback);
foreach ($this->forwardEmitters as $emitter) {
$emitter->listen($scope, $method, $callback);
}
}
/**
* @param \OC\Hooks\Emitter $emitter
*/
protected function forward(Emitter $emitter) {
$this->forwardEmitters[] = $emitter;
//forward all previously connected hooks
foreach ($this->listeners as $key => $listeners) {
list($scope, $method) = explode('::', $key, 2);
foreach ($listeners as $listener) {
$emitter->listen($scope, $method, $listener);
}
}
}
}
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