Initial commit - Typo3 11.5.41

typo3conf/ext/news/Classes/ViewHelpers/ExtensionLoadedViewHelper.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace GeorgRinger\News\ViewHelpers;
+
+/**
+ * This file is part of the "news" Extension for TYPO3 CMS.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractConditionViewHelper;
+
+/**
+ * Class ExtensionLoadedViewHelper
+ */
+class ExtensionLoadedViewHelper extends AbstractConditionViewHelper
+{
+
+    /**
+     * Initialize additional argument
+     */
+    public function initializeArguments()
+    {
+        $this->registerArgument('extensionKey', 'string', 'Extension which must be checked', true);
+        parent::initializeArguments();
+    }
+
+    /**
+     * @param array|null $arguments
+     * @return bool
+     */
+    protected static function evaluateCondition($arguments = null): bool
+    {
+        return ExtensionManagementUtility::isLoaded($arguments['extensionKey']);
+    }
+
+    /**
+     * @return mixed
+     */
+    public function render()
+    {
+        if (static::evaluateCondition($this->arguments)) {
+            return $this->renderThenChild();
+        }
+        return $this->renderElseChild();
+    }
+}