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typo3/sysext/adminpanel/Classes/ViewHelpers/SubModuleRenderViewHelper.php

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+<?php
+declare(strict_types = 1);
+
+namespace TYPO3\CMS\Adminpanel\ViewHelpers;
+
+/*
+ * 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\Adminpanel\ModuleApi\ContentProviderInterface;
+use TYPO3\CMS\Adminpanel\ModuleApi\ModuleData;
+use TYPO3\CMS\Adminpanel\ModuleApi\ModuleDataStorageCollection;
+use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
+use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
+
+/**
+ * Render submodule content
+ *
+ * @internal
+ */
+class SubModuleRenderViewHelper extends AbstractViewHelper
+{
+    use CompileWithRenderStatic;
+
+    /**
+     * First level cache of user names
+     *
+     * @var array
+     */
+    protected static $usernameRuntimeCache = [];
+
+    /**
+     * Initializes the arguments
+     */
+    public function initializeArguments(): void
+    {
+        $this->registerArgument(
+            'module',
+            ContentProviderInterface::class,
+            'SubModule instance to be rendered',
+            true
+        );
+        $this->registerArgument('data', ModuleDataStorageCollection::class, 'Data to be used for rendering', true);
+    }
+
+    /**
+     * Resolve user name from backend user id.
+     *
+     * @param array $arguments
+     * @param \Closure $renderChildrenClosure
+     * @param RenderingContextInterface $renderingContext
+     * @return string Username or an empty string if there is no user with that UID
+     */
+    public static function renderStatic(
+        array $arguments,
+        \Closure $renderChildrenClosure,
+        RenderingContextInterface $renderingContext
+    ): string {
+        $module = $arguments['module'];
+        /** @var \TYPO3\CMS\Adminpanel\ModuleApi\ModuleDataStorageCollection $data */
+        $data = $arguments['data'];
+        $moduleData = $data->contains($module) ? $data->offsetGet($module) : new ModuleData();
+        return $module->getContent($moduleData);
+    }
+}