moodle/lib/classes/hook/stoppable_trait.php
2023-09-14 11:33:01 +02:00

52 lines
1.7 KiB
PHP

<?php
// This file is part of Moodle - https://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <https://www.gnu.org/licenses/>.
namespace core\hook;
/**
* Moodle specific implementation of
* \Psr\EventDispatcher\StoppableEventInterface
* interface from PSR-14.
*
* @package core
* @author Petr Skoda
* @copyright 2023 Open LMS
* @license https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
trait stoppable_trait {
/** @var bool $propagationstopped propagation is stopped */
private $propagationstopped = false;
/**
* Allows plugins to notify the hook dispatcher that hook propagation should be stopped
*/
public function stop_propagation(): void {
$this->propagationstopped = true;
}
/**
* Is propagation stopped?
*
* This will typically only be used by the Dispatcher to determine if the
* previous listener halted propagation.
* @return bool True if the Event is complete and no further listeners should be called.
* False to continue calling listeners.
*/
public function isPropagationStopped(): bool {
return $this->propagationstopped;
}
}