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typo3/sysext/extensionmanager/Classes/ViewHelpers/Be/TriggerViewHelper.php

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+<?php
+namespace TYPO3\CMS\Extensionmanager\ViewHelpers\Be;
+
+/*
+ * 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\Extensionmanager\Controller\AbstractController;
+
+/**
+ * Special ViewHelper for the BE module of the Extension Manager. Loads JS code for triggering
+ * refresh events.
+ *
+ * = Examples =
+ *
+ * <code title="Simple">
+ * <em:be.container triggers="{triggers}" />
+ * </code>
+ * <output>
+ * Writes some JS inline code
+ * </output>
+ *
+ * @internal
+ */
+class TriggerViewHelper extends \TYPO3\CMS\Fluid\ViewHelpers\Be\AbstractBackendViewHelper
+{
+    /**
+     * Initializes the arguments
+     */
+    public function initializeArguments()
+    {
+        parent::initializeArguments();
+        $this->registerArgument('triggers', 'array', 'Defined triggers to be forwarded to client (e.g. refreshing backend widgets)', false, []);
+    }
+
+    /**
+     * Loads some JS inline code based on a list of triggers. This is used to reload the main
+     * menu when modules are loaded/unloaded.
+     *
+     * @return string This ViewHelper does not return any content
+     * @see \TYPO3\CMS\Backend\Template\DocumentTemplate
+     * @see \TYPO3\CMS\Core\Page\PageRenderer
+     */
+    public function render()
+    {
+        $pageRenderer = $this->getPageRenderer();
+        // Handle triggers
+        if (!empty($this->arguments['triggers'][AbstractController::TRIGGER_RefreshModuleMenu])) {
+            $pageRenderer->addJsInlineCode(
+                AbstractController::TRIGGER_RefreshModuleMenu,
+                'if (top && top.TYPO3.ModuleMenu.App) { top.TYPO3.ModuleMenu.App.refreshMenu(); }'
+            );
+        }
+
+        if (!empty($this->arguments['triggers'][AbstractController::TRIGGER_RefreshTopbar])) {
+            $pageRenderer->addJsInlineCode(
+                AbstractController::TRIGGER_RefreshTopbar,
+                'if (top && top.TYPO3.Backend && top.TYPO3.Backend.Topbar) { top.TYPO3.Backend.Topbar.refresh(); }'
+            );
+        }
+        return '';
+    }
+}