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typo3/sysext/backend/Classes/Module/AbstractModule.php

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+<?php
+namespace TYPO3\CMS\Backend\Module;
+
+/*
+ * 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 Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Backend\Template\ModuleTemplate;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * A backend module. This class may be used by extension backend modules
+ * to implement own actions and controllers. It initializes the module
+ * template and comes with a simple dispatcher method.
+ *
+ * @internal Experimental for now
+ * @deprecated since TYPO3 v9, will be removed in TYPO3 v10.0.
+ */
+class AbstractModule
+{
+    /**
+     * ModuleTemplate object
+     *
+     * @var ModuleTemplate
+     */
+    protected $moduleTemplate;
+
+    /**
+     * Constructor Method
+     */
+    public function __construct()
+    {
+        trigger_error(
+            'Class AbstractModule is deprecated since TYPO3 v9 and will be removed with TYPO3 v10.0.'
+            . ' Instantiate ModuleTemplate yourself if needed and use routing registered in Routes.php.',
+            E_USER_DEPRECATED
+        );
+        $this->moduleTemplate = GeneralUtility::makeInstance(ModuleTemplate::class);
+    }
+
+    /**
+     * PSR Request Object
+     *
+     * @var ServerRequestInterface
+     */
+    protected $request;
+
+    /**
+     * Central Request Dispatcher
+     *
+     * @param ServerRequestInterface $request PSR7 Request Object
+     * @param ResponseInterface $response PSR7 Response Object
+     *
+     * @return ResponseInterface
+     *
+     * @throws \InvalidArgumentException In case an action is not callable
+     */
+    public function processRequest(ServerRequestInterface $request, ResponseInterface $response)
+    {
+        $methodName = $request->getQueryParams()['action'] ?: 'index';
+        if (!is_callable([$this, $methodName])) {
+            throw new \InvalidArgumentException(
+                'The method "' . $methodName . '" is not callable within "' . static::class . '".',
+                1442736343
+            );
+        }
+        return $this->{$methodName}($request, $response);
+    }
+}