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typo3/sysext/extensionmanager/Classes/ViewHelpers/ProcessAvailableActionsViewHelper.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 TYPO3Fluid\Fluid\Core\ViewHelper\AbstractTagBasedViewHelper;
+
+/**
+ * ViewHelper to let 3rd-party extensions process the list of available
+ * actions for a given extension.
+ * @internal
+ */
+class ProcessAvailableActionsViewHelper extends AbstractTagBasedViewHelper
+{
+    const SIGNAL_ProcessActions = 'processActions';
+
+    /**
+     * @var \TYPO3\CMS\Extbase\SignalSlot\Dispatcher
+     */
+    protected $signalSlotDispatcher;
+
+    /**
+     * @param \TYPO3\CMS\Extbase\SignalSlot\Dispatcher $signalSlotDispatcher
+     */
+    public function injectSignalSlotDispatcher(\TYPO3\CMS\Extbase\SignalSlot\Dispatcher $signalSlotDispatcher)
+    {
+        $this->signalSlotDispatcher = $signalSlotDispatcher;
+    }
+
+    /**
+     * Initialize arguments
+     */
+    public function initializeArguments()
+    {
+        parent::initializeArguments();
+        $this->registerArgument('extension', 'string', '', true);
+    }
+
+    /**
+     * Processes the list of actions.
+     *
+     * @return string the rendered list of actions
+     */
+    public function render()
+    {
+        $extension = $this->arguments['extension'];
+        $html = $this->renderChildren();
+        $actions = preg_split('#\\n\\s*#s', trim($html));
+
+        $actions = $this->emitProcessActionsSignal($extension, $actions);
+
+        return implode(' ', $actions);
+    }
+
+    /**
+     * Emits a signal after the list of actions is processed
+     *
+     * @param string $extension
+     * @param array $actions
+     * @return array Modified action array
+     */
+    protected function emitProcessActionsSignal($extension, array $actions)
+    {
+        $this->signalSlotDispatcher->dispatch(
+            __CLASS__,
+            static::SIGNAL_ProcessActions,
+            [
+                $extension,
+                &$actions,
+            ]
+        );
+        return $actions;
+    }
+}