TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:03 +02:00
commit 61d66df078
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+<?php
+
+declare(strict_types=1);
+
+/*
+ * 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!
+ */
+
+namespace TYPO3\CMS\Beuser\ViewHelpers;
+
+use TYPO3\CMS\Beuser\Domain\Model\BackendUser;
+use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
+use TYPO3\CMS\Core\Imaging\IconFactory;
+use TYPO3\CMS\Core\Imaging\IconSize;
+use TYPO3\CMS\Core\Localization\LanguageService;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractTagBasedViewHelper;
+
+/**
+ * ViewHelper to displays a 'SwitchUser' button to change the current backend user to the target backend user.
+ *
+ * ```
+ *   <beuser:SwitchUser class="btn btn-default" backendUser="{backendUser}" />
+ * ```
+ *
+ * @internal
+ */
+final class SwitchUserViewHelper extends AbstractTagBasedViewHelper
+{
+    /**
+     * @var string
+     */
+    protected $tagName = 'typo3-backend-switch-user';
+
+    public function __construct(
+        private readonly IconFactory $iconFactory
+    ) {
+        parent::__construct();
+    }
+
+    public function initializeArguments(): void
+    {
+        parent::initializeArguments();
+        $this->registerArgument('backendUser', BackendUser::class, 'Target backendUser to switch active session to', true);
+    }
+
+    public function render(): string
+    {
+        /** @var BackendUser $targetUser */
+        $targetUser = $this->arguments['backendUser'];
+        $currentUser = self::getBackendUserAuthentication();
+
+        if ((int)$targetUser->getUid() === (int)$currentUser->getUserId()
+            || !$targetUser->isActive()
+            || !$currentUser->isAdmin()
+            || $currentUser->getOriginalUserIdWhenInSwitchUserMode() !== null
+        ) {
+            $this->tag->setTagName('span');
+            $this->tag->addAttribute('class', $this->tag->getAttribute('class') . ' disabled');
+            $this->tag->addAttribute('disabled', 'disabled');
+            $this->tag->setContent($this->iconFactory->getIcon('empty-empty', IconSize::SMALL)->render());
+        } else {
+            $this->tag->addAttribute('title', self::getLanguageService()->sL('LLL:EXT:beuser/Resources/Private/Language/locallang.xlf:switchBackMode'));
+            $this->tag->addAttribute('targetUser', (string)$targetUser->getUid());
+            $this->tag->setContent($this->iconFactory->getIcon('actions-system-backend-user-switch', IconSize::SMALL)->render());
+        }
+
+        $this->tag->forceClosingTag(true);
+        return $this->tag->render();
+    }
+
+    private static function getBackendUserAuthentication(): BackendUserAuthentication
+    {
+        return $GLOBALS['BE_USER'];
+    }
+
+    private static function getLanguageService(): LanguageService
+    {
+        return $GLOBALS['LANG'];
+    }
+}