BackendUtilityHook.php

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<?php
namespace TYPO3\CMS\Workspaces\Hook;

/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

use TYPO3\CMS\Core\Utility\GeneralUtility;

class BackendUtilityHook implements \TYPO3\CMS\Core\SingletonInterface
{
    public static function getInstance()
    {
        return GeneralUtility::makeInstance(__CLASS__);
    }

    public function preProcess(&$pageUid, $backPath, $rootLine, $anchorSection, &$viewScript, $additionalGetVars, $switchFocus)
    {
        if ($GLOBALS['BE_USER']->workspace !== 0) {
            $viewScript = $this->getWorkspaceService()->generateWorkspaceSplittedPreviewLink($pageUid);
        }
    }

    protected function getWorkspaceService()
    {
        return GeneralUtility::makeInstance(\TYPO3\CMS\Workspaces\Service\WorkspaceService::class);
    }

    public function makeEditForm_accessCheck($params, &$form)
    {
        if ($GLOBALS['BE_USER']->workspace !== 0 && $GLOBALS['TCA'][$params['table']]['ctrl']['versioningWS']) {
            $record = \TYPO3\CMS\Backend\Utility\BackendUtility::getRecordWSOL($params['table'], $params['uid']);
            if (abs($record['t3ver_stage']) > \TYPO3\CMS\Workspaces\Service\StagesService::STAGE_EDIT_ID) {
                $stages = GeneralUtility::makeInstance(\TYPO3\CMS\Workspaces\Service\StagesService::class);
                $stageName = $stages->getStageTitle($record['t3ver_stage']);
                $editingName = $stages->getStageTitle(\TYPO3\CMS\Workspaces\Service\StagesService::STAGE_EDIT_ID);
                $message = $GLOBALS['LANG']->sL('LLL:EXT:workspaces/Resources/Private/Language/locallang.xlf:info.elementAlreadyModified');
                $flashMessage = GeneralUtility::makeInstance(\TYPO3\CMS\Core\Messaging\FlashMessage::class, sprintf($message, $stageName, $editingName), '', \TYPO3\CMS\Core\Messaging\FlashMessage::INFO, true);
                $flashMessageService = GeneralUtility::makeInstance(\TYPO3\CMS\Core\Messaging\FlashMessageService::class);
                $defaultFlashMessageQueue = $flashMessageService->getMessageQueueByIdentifier();
                $defaultFlashMessageQueue->enqueue($flashMessage);
            }
        }
        return $params['hasAccess'];
    }
}