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typo3/sysext/extensionmanager/Classes/ViewHelpers/UpdateScriptViewHelper.php

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+<?php
+namespace TYPO3\CMS\Extensionmanager\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\Core\Imaging\Icon;
+use TYPO3\CMS\Core\Imaging\IconFactory;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Fluid\ViewHelpers\Link\ActionViewHelper;
+
+/**
+ * ViewHelper for update script link
+ * @internal
+ */
+class UpdateScriptViewHelper extends ActionViewHelper
+{
+
+    /** @var \TYPO3\CMS\Extbase\Object\ObjectManager */
+    protected $objectManager;
+
+    /**
+     * @param \TYPO3\CMS\Extbase\Object\ObjectManagerInterface $objectManager
+     */
+    public function injectObjectManager(\TYPO3\CMS\Extbase\Object\ObjectManagerInterface $objectManager)
+    {
+        $this->objectManager = $objectManager;
+    }
+
+    /**
+     * initialize arguments
+     */
+    public function initializeArguments()
+    {
+        parent::initializeArguments();
+        $this->registerArgument('extensionKey', 'string', 'Extension key', true);
+    }
+
+    /**
+     * Renders a link to the update script screen if the extension has one
+     *
+     * @return string The rendered a tag
+     */
+    public function render()
+    {
+        $extensionKey = $this->arguments['extensionKey'];
+
+        // If the "class.ext_update.php" file exists, build link to the update script screen
+        /** @var \TYPO3\CMS\Extensionmanager\Utility\UpdateScriptUtility $updateScriptUtility */
+        $updateScriptUtility = $this->objectManager->get(\TYPO3\CMS\Extensionmanager\Utility\UpdateScriptUtility::class);
+        /** @var IconFactory $iconFactory */
+        $iconFactory = GeneralUtility::makeInstance(IconFactory::class);
+        if ($updateScriptUtility->checkUpdateScriptExists($extensionKey)) {
+            $uriBuilder = $this->renderingContext->getControllerContext()->getUriBuilder();
+            $action = 'show';
+            $uri = $uriBuilder->reset()->uriFor(
+                $action,
+                ['extensionKey' => $extensionKey],
+                'UpdateScript'
+            );
+            $this->tag->addAttribute('href', $uri);
+            $this->tag->addAttribute('title', \TYPO3\CMS\Extbase\Utility\LocalizationUtility::translate('extensionList.update.script', 'extensionmanager'));
+            $this->tag->setContent($iconFactory->getIcon('actions-refresh', Icon::SIZE_SMALL)->render());
+            $tag = $this->tag->render();
+        } else {
+            return '<span class="btn btn-default disabled">' . $iconFactory->getIcon('empty-empty', Icon::SIZE_SMALL)->render() . '</span>';
+        }
+        return $tag;
+    }
+}