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typo3/sysext/frontend/Classes/ContentObject/AbstractContentObject.php

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+<?php
+namespace TYPO3\CMS\Frontend\ContentObject;
+
+/*
+ * 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\Page\PageRenderer;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * Contains an abstract class for all tslib content class implementations.
+ */
+abstract class AbstractContentObject
+{
+    /**
+     * @var ContentObjectRenderer
+     */
+    protected $cObj;
+
+    /**
+     * @var PageRenderer
+     */
+    protected $pageRenderer;
+
+    /**
+     * Default constructor.
+     *
+     * @param ContentObjectRenderer $cObj
+     */
+    public function __construct(ContentObjectRenderer $cObj)
+    {
+        $this->cObj = $cObj;
+    }
+
+    /**
+     * Renders the content object.
+     *
+     * @param array $conf
+     * @return string
+     */
+    abstract public function render($conf = []);
+
+    /**
+     * Getter for current ContentObjectRenderer
+     *
+     * @return ContentObjectRenderer
+     */
+    public function getContentObjectRenderer()
+    {
+        return $this->cObj;
+    }
+
+    /**
+     * @return PageRenderer
+     */
+    protected function getPageRenderer()
+    {
+        if ($this->pageRenderer === null) {
+            $this->pageRenderer = GeneralUtility::makeInstance(PageRenderer::class);
+        }
+
+        return $this->pageRenderer;
+    }
+}