[!!!][FEATURE] Refactoring of FlashMessage rendering
[Packages/TYPO3.CMS.git] / typo3 / sysext / core / Classes / Messaging / FlashMessageService.php
1 <?php
2 declare(strict_types=1);
3 namespace TYPO3\CMS\Core\Messaging;
4
5 /*
6 * This file is part of the TYPO3 CMS project.
7 *
8 * It is free software; you can redistribute it and/or modify it under
9 * the terms of the GNU General Public License, either version 2
10 * of the License, or any later version.
11 *
12 * For the full copyright and license information, please read the
13 * LICENSE.txt file that was distributed with this source code.
14 *
15 * The TYPO3 project - inspiring people to share!
16 */
17
18 use TYPO3\CMS\Core\SingletonInterface;
19 use TYPO3\CMS\Core\Utility\GeneralUtility;
20
21 /**
22 * A class representing flash messages.
23 */
24 class FlashMessageService implements SingletonInterface
25 {
26 /**
27 * Array of \TYPO3\CMS\Core\Messaging\FlashMessageQueue objects
28 *
29 * @var FlashMessageQueue[]
30 */
31 protected $flashMessageQueues = [];
32
33 /**
34 * Return the message queue for the given identifier.
35 * If no queue exists, an empty one will be created.
36 *
37 * @param string $identifier
38 * @return FlashMessageQueue
39 * @api
40 */
41 public function getMessageQueueByIdentifier($identifier = 'core.template.flashMessages') : FlashMessageQueue
42 {
43 if (!isset($this->flashMessageQueues[$identifier])) {
44 $this->flashMessageQueues[$identifier] = GeneralUtility::makeInstance(
45 FlashMessageQueue::class,
46 $identifier
47 );
48 }
49 return $this->flashMessageQueues[$identifier];
50 }
51 }