Initial commit

typo3conf/ext/vhs/Classes/ViewHelpers/OrViewHelper.php

@@ -0,0 +1,72 @@
+<?php
+namespace FluidTYPO3\Vhs\ViewHelpers;
+
+/*
+ * This file is part of the FluidTYPO3/Vhs project under GPLv2 or later.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.md file that was distributed with this source code.
+ */
+
+use TYPO3\CMS\Extbase\Utility\LocalizationUtility;
+use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
+
+/**
+ * If content is empty use alternative text (can also be LLL:labelname shortcut or LLL:EXT: file paths).
+ *
+ * @author Danilo Bürger <danilo.buerger@hmspl.de>, Heimspiel GmbH
+ * @package Vhs
+ * @subpackage ViewHelpers
+ */
+class OrViewHelper extends AbstractViewHelper {
+
+	/**
+	 * Initialize
+	 *
+	 * @return void
+	 */
+	public function initializeArguments() {
+		$this->registerArgument('alternative', 'mixed', 'Alternative if content is empty, can use LLL: shortcut', FALSE);
+		$this->registerArgument('arguments', 'array', 'Arguments to be replaced in the resulting string', FALSE, NULL);
+		$this->registerArgument('extensionName', 'string', 'UpperCamelCase extension name without vendor prefix', FALSE, NULL);
+	}
+
+	/**
+	 * @param $content string
+	 * @return string
+	 */
+	public function render($content = NULL) {
+		if (NULL === $content) {
+			$content = $this->renderChildren();
+		}
+		if (TRUE === empty($content)) {
+			$content = $this->getAlternativeValue();
+		}
+		return $content;
+	}
+
+	/**
+	 * @return mixed
+	 */
+	protected function getAlternativeValue() {
+		$alternative = $this->arguments['alternative'];
+		$arguments = (array) $this->arguments['arguments'];
+		if (0 === count($arguments)) {
+			$arguments = NULL;
+		}
+		if (0 === strpos($alternative, 'LLL:EXT:')) {
+			$alternative = LocalizationUtility::translate($alternative, NULL, $arguments);
+		} elseif (0 === strpos($alternative, 'LLL:')) {
+			$extensionName = $this->arguments['extensionName'];
+			if (NULL === $extensionName) {
+				$extensionName = $this->controllerContext->getRequest()->getControllerExtensionName();
+			}
+			$translatedAlternative = LocalizationUtility::translate(substr($alternative, 4), $extensionName, $arguments);
+			if (NULL !== $translatedAlternative) {
+				$alternative = $translatedAlternative;
+			}
+		}
+		return NULL !== $arguments && FALSE === empty($alternative) ? vsprintf($alternative, $arguments) : $alternative;
+	}
+
+}