[BUGFIX] Remove unused PreviewRenderer EventListener

Classes/EventListener/PluginRenderer.php

-<?php
-
-/***************************************************************
- *  Copyright notice
- *  (c) sgalinski Internet Services (https://www.sgalinski.de)
- *  All rights reserved
- *  This script is part of the TYPO3 project. The TYPO3 project is
- *  free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 3 of the License, or
- *  (at your option) any later version.
- *  The GNU General Public License can be found at
- *  http://www.gnu.org/copyleft/gpl.html.
- *  This script is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *  This copyright notice MUST APPEAR in all copies of the script!
- ***************************************************************/
-
-namespace SGalinski\SgYoutube\EventListener;
-
-use SGalinski\SgYoutube\Preview\PreviewService;
-use TYPO3\CMS\Backend\Utility\BackendUtility;
-use TYPO3\CMS\Backend\View\Event\PageContentPreviewRenderingEvent;
-use TYPO3\CMS\Core\Localization\LanguageService;
-use TYPO3\CMS\Core\Utility\GeneralUtility;
-
-class PluginRenderer {
-	/**
-	 * @var \SGalinski\SgYoutube\Preview\PreviewService
-	 */
-	private PreviewService $previewService;
-
-	public function __construct() {
-		$this->previewService = GeneralUtility::makeInstance(PreviewService::class);
-	}
-
-	public function __invoke(PageContentPreviewRenderingEvent $event) {
-		$a = 'a';
-	}
-
-	/**
-	 * Preprocesses the preview rendering of a content element of type "sg_youtube"
-	 *
-	 * @param PageLayoutView $parentObject Calling parent object
-	 * @param bool $drawItem Whether to draw the item using the default functionality
-	 * @param string $headerContent Header content
-	 * @param string $itemContent Item content
-	 * @param array $row Record row of tt_content
-	 * @return void
-	 * @noinspection ReferencingObjectsInspection
-	 * @deprecated All of this class will be removed when TYPO3 10 support is dropped
-	 */
-	public function preProcess(
-		PageLayoutView &$parentObject,
-		&$drawItem,
-		&$headerContent,
-		&$itemContent,
-		array &$row
-	): void {
-		trigger_error(
-			'Using the old style of rendering backend previews is deprecated and will not longer work when TYPO3 10'
-			. ' support is dropped! Please switch to using the Fluid Based Page Module instead!',
-			E_USER_DEPRECATED
-		);
-		if ($row['list_type'] === 'sgyoutube_youtube') {
-			$drawItem = FALSE;
-
-			$this->adaptPluginHeaderContent($headerContent, $row);
-
-			$view = $this->previewService->getPluginPreview($row);
-			$itemContent .= $view->render();
-		}
-	}
-
-	/**
-	 * Adapts the given $headerContent.
-	 * To be used in all plugin previews so the Header Contents appear similarly.
-	 *
-	 * @param string $headerContent
-	 * @param array $row
-	 */
-	protected function adaptPluginHeaderContent(&$headerContent, $row): void {
-		$headerContent = '<h4>' . $this->getPluginNameForHeaderContent(
-			(int) $row['pid'],
-			$row['list_type']
-		) . $headerContent . '</h4>';
-	}
-
-	/**
-	 * Finds the label of the given $listType element on the page with the given $pid
-	 * and returns it wrapped for use in the backend preview's header content.
-	 *
-	 * @param int $pid
-	 * @param string $listType
-	 * @return string
-	 */
-	protected function getPluginNameForHeaderContent(int $pid, string $listType): string {
-		$languageService = GeneralUtility::makeInstance(LanguageService::class);
-
-		$pluginName = $languageService->sL(
-			BackendUtility::getLabelFromItemListMerged(
-				$pid,
-				'tt_content',
-				'list_type',
-				$listType
-			)
-		);
-		return '<span class="label label-primary">' . $pluginName . '</span>&nbsp;';
-	}
-}

Configuration/Services.yaml

@@ -25,10 +25,3 @@ services:
   SGalinski\SgYoutube\Form\Element\LicenceStatus:
     autowire: false
     autoconfigure: false
-
-  SGalinski\SgYoutube\EventListener\PluginRenderer:
-    autowire: true
-    tags:
-      - name: event.listener
-        identifier: 'sgYoutubePluginRenderer'
-        event: TYPO3\CMS\Backend\View\Event\PageContentPreviewRenderingEvent