diff --git a/typo3/sysext/core/Documentation/Changelog/master/Feature-78672-IntroduceFluidDataProcessorForMenus.rst b/typo3/sysext/core/Documentation/Changelog/master/Feature-78672-IntroduceFluidDataProcessorForMenus.rst
new file mode 100644
index 0000000000000000000000000000000000000000..8a40039c03ee6ebd900adaf57c9e06fb3700bda3
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+++ b/typo3/sysext/core/Documentation/Changelog/master/Feature-78672-IntroduceFluidDataProcessorForMenus.rst
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+.. include:: ../../Includes.txt
+
+==========================================================
+Feature: #78672 - Introduce fluid data processor for menus
+==========================================================
+
+See :issue:`78672`
+
+Description
+===========
+
+This menu processor utilizes HMENU to generate a json encoded menu
+string that will be decoded again and assigned to FLUIDTEMPLATE as
+variable. Additional DataProcessing is supported and will be applied
+to each record.
+
+Options:
+`as` The variable to be used within the result
+`levels` Number of levels of the menu
+`expandAll` If false, submenus will only render if the parent page is active
+`includeSpacer` If true, pagetype spacer will be included in the menu
+`titleField` Field that should be used for the title
+
+See HMENU docs for more options.
+https://docs.typo3.org/typo3cms/TyposcriptReference/ContentObjects/Hmenu/Index.html
+
+Example TypoScript configuration:
+
+.. code-block:: typoscript
+ 10 = TYPO3\CMS\Frontend\DataProcessing\MenuProcessor
+ 10 {
+ special = list
+ special.value.field = pages
+ levels = 7
+ as = menu
+ expandAll = 1
+ includeSpacer = 1
+ titleField = nav_title // title
+ dataProcessing {
+ 10 = TYPO3\CMS\Frontend\DataProcessing\FilesProcessor
+ 10 {
+ references.fieldName = media
+ }
+ }
+ }
+
+.. index:: Fluid, TypoScript, Frontend
diff --git a/typo3/sysext/frontend/Classes/DataProcessing/MenuProcessor.php b/typo3/sysext/frontend/Classes/DataProcessing/MenuProcessor.php
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+++ b/typo3/sysext/frontend/Classes/DataProcessing/MenuProcessor.php
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+<?php
+namespace TYPO3\CMS\Frontend\DataProcessing;
+
+/*
+ * 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\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentDataProcessor;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface;
+
+/**
+ * This menu processor utilizes HMENU to generate a json encoded menu
+ * string that will be decoded again and assigned to FLUIDTEMPLATE as
+ * variable. Additional DataProcessing is supported and will be applied
+ * to each record.
+ *
+ * Options:
+ * as - The variable to be used within the result
+ * levels - Number of levels of the menu
+ * expandAll = If false, submenus will only render if the parent page is active
+ * includeSpacer = If true, pagetype spacer will be included in the menu
+ * titleField = Field that should be used for the title
+ *
+ * See HMENU docs for more options.
+ * https://docs.typo3.org/typo3cms/TyposcriptReference/ContentObjects/Hmenu/Index.html
+ *
+ *
+ * Example TypoScript configuration:
+ *
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\MenuProcessor
+ * 10 {
+ * special = list
+ * special.value.field = pages
+ * levels = 7
+ * as = menu
+ * expandAll = 1
+ * includeSpacer = 1
+ * titleField = nav_title // title
+ * dataProcessing {
+ * 10 = TYPO3\CMS\Frontend\DataProcessing\FilesProcessor
+ * 10 {
+ * references.fieldName = media
+ * }
+ * }
+ * }
+ *
+ */
+class MenuProcessor implements DataProcessorInterface
+{
+ const LINK_PLACEHOLDER = '###LINKPLACEHOLDER###';
+ const TARGET_PLACEHOLDER = '###TARGETPLACEHOLDER###';
+
+ /**
+ * The content object renderer
+ *
+ * @var ContentObjectRenderer
+ */
+ public $cObj;
+
+ /**
+ * The processor configuration
+ *
+ * @var array
+ */
+ protected $processorConfiguration;
+
+ /**
+ * Allowed configuration keys for menu generation, other keys
+ * will throw an exception to prevent configuration errors.
+ *
+ * @var array
+ */
+ public $allowedConfigurationKeys = [
+ 'cache_period',
+ 'entryLevel',
+ 'entryLevel.',
+ 'special',
+ 'special.',
+ 'minItems',
+ 'minItems.',
+ 'maxItems',
+ 'maxItems.',
+ 'begin',
+ 'begin.',
+ 'excludeUidList',
+ 'excludeUidList.',
+ 'excludeDoktypes',
+ 'includeNotInMenu',
+ 'alwaysActivePIDlist',
+ 'alwaysActivePIDlist.',
+ 'protectLvar',
+ 'addQueryString',
+ 'if',
+ 'if.',
+ 'levels',
+ 'expandAll',
+ 'includeSpacer',
+ 'as',
+ 'titleField',
+ 'dataProcessing',
+ 'dataProcessing.'
+ ];
+
+ /**
+ * Remove keys from configuration that should not be passed
+ * to HMENU to prevent configuration errors
+ *
+ * @var array
+ */
+ public $removeConfigurationKeysForHmenu = [
+ 'levels',
+ 'expandAll',
+ 'includeSpacer',
+ 'as',
+ 'titleField',
+ 'dataProcessing',
+ 'dataProcessing.'
+ ];
+
+ /**
+ * @var array
+ */
+ protected $menuConfig = [
+ 'wrap' => '[|]'
+ ];
+
+ /**
+ * @var array
+ */
+ protected $menuLevelConfig = [
+ 'doNotLinkIt' => '1',
+ 'wrapItemAndSub' => '{|}, |*| {|}, |*| {|}',
+ 'stdWrap.' => [
+ 'cObject' => 'COA',
+ 'cObject.' => [
+ '10' => 'USER',
+ '10.' => [
+ 'userFunc' => 'TYPO3\CMS\Frontend\DataProcessing\MenuProcessor->getDataAsJson',
+ 'stdWrap.' => [
+ 'wrap' => '"data":|'
+ ]
+ ],
+ '20' => 'TEXT',
+ '20.' => [
+ 'field' => 'nav_title // title',
+ 'trim' => '1',
+ 'wrap' => ',"title":|',
+ 'preUserFunc' => 'TYPO3\CMS\Frontend\DataProcessing\MenuProcessor->jsonEncodeUserFunc'
+ ],
+ '21' => 'TEXT',
+ '21.' => [
+ 'value' => self::LINK_PLACEHOLDER,
+ 'wrap' => ',"link":|',
+ ],
+ '22' => 'TEXT',
+ '22.' => [
+ 'value' => self::TARGET_PLACEHOLDER,
+ 'wrap' => ',"target":|',
+ ],
+ '30' => 'TEXT',
+ '30.' => [
+ 'value' => '0',
+ 'wrap' => ',"active":|'
+ ],
+ '40' => 'TEXT',
+ '40.' => [
+ 'value' => '0',
+ 'wrap' => ',"current":|'
+ ],
+ '50' => 'TEXT',
+ '50.' => [
+ 'value' => '0',
+ 'wrap' => ',"spacer":|'
+ ]
+ ]
+ ]
+ ];
+
+ /**
+ * @var array
+ */
+ public $menuDefaults = [
+ 'levels' => 1,
+ 'expandAll' => 1,
+ 'includeSpacer' => 0,
+ 'as' => 'menu',
+ 'titleField' => 'nav_title // title'
+ ];
+
+ /**
+ * @var int
+ */
+ protected $menuLevels;
+
+ /**
+ * @var int
+ */
+ protected $menuExpandAll;
+
+ /**
+ * @var int
+ */
+ protected $menuIncludeSpacer;
+
+ /**
+ * @var string
+ */
+ protected $menuTitleField;
+
+ /**
+ * @var string
+ */
+ protected $menuTargetVariableName;
+
+ /**
+ * @var ContentDataProcessor
+ */
+ protected $contentDataProcessor;
+
+ /**
+ * Constructor
+ */
+ public function __construct()
+ {
+ $this->contentDataProcessor = GeneralUtility::makeInstance(ContentDataProcessor::class);
+ }
+
+ /**
+ * Get configuration value from processorConfiguration
+ *
+ * @param string $key
+ * @return string
+ */
+ protected function getConfigurationValue($key)
+ {
+ return $this->cObj->stdWrapValue($key, $this->processorConfiguration, $this->menuDefaults[$key]);
+ }
+
+ /**
+ * Validate configuration
+ *
+ * @throws \InvalidArgumentException
+ */
+ public function validateConfiguration()
+ {
+ $invalidArguments = [];
+ foreach ($this->processorConfiguration as $key => $value) {
+ if (!in_array($key, $this->allowedConfigurationKeys)) {
+ $invalidArguments[str_replace('.', '', $key)] = $key;
+ }
+ }
+ if (!empty($invalidArguments)) {
+ throw new \InvalidArgumentException('MenuProcessor Configuration contains invalid Arguments: ' . implode(', ', $invalidArguments), 1478806566);
+ }
+ }
+
+ /**
+ * Prepare Configuration
+ */
+ public function prepareConfiguration()
+ {
+ $this->menuConfig += $this->processorConfiguration;
+ // Filter configuration
+ foreach ($this->menuConfig as $key => $value) {
+ if (in_array($key, $this->removeConfigurationKeysForHmenu)) {
+ unset($this->menuConfig[$key]);
+ }
+ }
+ // Process special value
+ if (isset($this->menuConfig['special.']['value.'])) {
+ $this->menuConfig['special.']['value'] = $this->cObj->stdWrap($this->menuConfig['special.']['value'], $this->menuConfig['special.']['value.']);
+ unset($this->menuConfig['special.']['value.']);
+ }
+ }
+
+ /**
+ * @return void
+ */
+ public function prepareLevelConfiguration()
+ {
+ $this->menuLevelConfig['stdWrap.']['cObject.'] = array_replace_recursive(
+ $this->menuLevelConfig['stdWrap.']['cObject.'],
+ [
+ '20.' => [
+ 'field' => $this->menuTitleField,
+ ]
+ ]
+ );
+ }
+
+ /**
+ * @return void
+ */
+ public function prepareLevelLanguageConfiguration()
+ {
+ if ($this->menuConfig['special'] === 'language') {
+ $this->menuLevelConfig['stdWrap.']['cObject.'] = array_replace_recursive(
+ $this->menuLevelConfig['stdWrap.']['cObject.'],
+ [
+ '60' => 'TEXT',
+ '60.' => [
+ 'value' => '1',
+ 'wrap' => ',"available":|'
+ ],
+ '70' => 'TEXT',
+ '70.' => [
+ 'value' => $this->menuConfig['special.']['value'],
+ 'listNum.' => [
+ 'stdWrap.' => [
+ 'data' => 'register:count_HMENU_MENUOBJ',
+ 'wrap' => '|-1'
+ ],
+ 'splitChar' => ','
+ ],
+ 'wrap' => ',"languageUid":"|"'
+ ]
+ ]
+ );
+ }
+ }
+
+ /**
+ * @return void
+ */
+ public function buildConfiguration()
+ {
+ for ($i = 1; $i <= $this->menuLevels; $i++) {
+ $this->menuConfig[$i] = 'TMENU';
+ $this->menuConfig[$i . '.']['IProcFunc'] = 'TYPO3\CMS\Frontend\DataProcessing\MenuProcessor->replacePlaceholderInRenderedMenuItem';
+ if ($i > 1) {
+ $this->menuConfig[$i . '.']['stdWrap.']['wrap'] = ',"children": [|]';
+ }
+ $this->menuConfig[$i . '.']['expAll'] = $this->menuExpandAll;
+ $this->menuConfig[$i . '.']['NO'] = '1';
+ $this->menuConfig[$i . '.']['NO.'] = $this->menuLevelConfig;
+ if ($this->menuIncludeSpacer) {
+ $this->menuConfig[$i . '.']['SPC'] = '1';
+ $this->menuConfig[$i . '.']['SPC.'] = $this->menuConfig[$i . '.']['NO.'];
+ $this->menuConfig[$i . '.']['SPC.']['stdWrap.']['cObject.']['50.']['value'] = '1';
+ }
+ $this->menuConfig[$i . '.']['IFSUB'] = '1';
+ $this->menuConfig[$i . '.']['IFSUB.'] = $this->menuConfig[$i . '.']['NO.'];
+ $this->menuConfig[$i . '.']['ACT'] = '1';
+ $this->menuConfig[$i . '.']['ACT.'] = $this->menuConfig[$i . '.']['NO.'];
+ $this->menuConfig[$i . '.']['ACT.']['stdWrap.']['cObject.']['30.']['value'] = '1';
+ $this->menuConfig[$i . '.']['ACTIFSUB'] = '1';
+ $this->menuConfig[$i . '.']['ACTIFSUB.'] = $this->menuConfig[$i . '.']['ACT.'];
+ $this->menuConfig[$i . '.']['CUR'] = '1';
+ $this->menuConfig[$i . '.']['CUR.'] = $this->menuConfig[$i . '.']['ACT.'];
+ $this->menuConfig[$i . '.']['CUR.']['stdWrap.']['cObject.']['40.']['value'] = '1';
+ $this->menuConfig[$i . '.']['CURIFSUB'] = '1';
+ $this->menuConfig[$i . '.']['CURIFSUB.'] = $this->menuConfig[$i . '.']['CUR.'];
+ if ($this->menuConfig['special'] === 'language') {
+ $this->menuConfig[$i . '.']['USERDEF1'] = $this->menuConfig[$i . '.']['NO'];
+ $this->menuConfig[$i . '.']['USERDEF1.'] = $this->menuConfig[$i . '.']['NO.'];
+ $this->menuConfig[$i . '.']['USERDEF1.']['stdWrap.']['cObject.']['60.']['value'] = '0';
+ $this->menuConfig[$i . '.']['USERDEF2'] = $this->menuConfig[$i . '.']['ACT'];
+ $this->menuConfig[$i . '.']['USERDEF2.'] = $this->menuConfig[$i . '.']['ACT.'];
+ $this->menuConfig[$i . '.']['USERDEF2.']['stdWrap.']['cObject.']['60.']['value'] = '0';
+ }
+ }
+ }
+
+ /**
+ * @param ContentObjectRenderer $cObj The data of the content element or page
+ * @param array $contentObjectConfiguration The configuration of Content Object
+ * @param array $processorConfiguration The configuration of this processor
+ * @param array $processedData Key/value store of processed data (e.g. to be passed to a Fluid View)
+ * @return array the processed data as key/value store
+ */
+ public function process(ContentObjectRenderer $cObj, array $contentObjectConfiguration, array $processorConfiguration, array $processedData)
+ {
+ $this->cObj = $cObj;
+ $this->processorConfiguration = $processorConfiguration;
+
+ // Get Configuration
+ $this->menuLevels = (int)$this->getConfigurationValue('levels') ?: 1;
+ $this->menuExpandAll = (int)$this->getConfigurationValue('expandAll');
+ $this->menuIncludeSpacer = (int)$this->getConfigurationValue('includeSpacer');
+ $this->menuTargetVariableName = $this->getConfigurationValue('as');
+ $this->menuTitleField = $this->getConfigurationValue('titleField');
+
+ // Validate Configuration
+ $this->validateConfiguration();
+
+ // Build Configuration
+ $this->prepareConfiguration();
+ $this->prepareLevelConfiguration();
+ $this->prepareLevelLanguageConfiguration();
+ $this->buildConfiguration();
+
+ // Process Configuration
+ $menuContentObject = $cObj->getContentObject('HMENU');
+ $renderedMenu = $menuContentObject->render($this->menuConfig);
+ if (!$renderedMenu) {
+ return $processedData;
+ }
+
+ // Process menu
+ $menu = json_decode($renderedMenu, true);
+ $processedMenu = [];
+
+ foreach ($menu as $key => $page) {
+ $processedMenu[$key] = $this->processAdditionalDataProcessors($page, $processorConfiguration);
+ }
+
+ // Return processed data
+ $processedData[$this->menuTargetVariableName] = $processedMenu;
+ return $processedData;
+ }
+
+ /**
+ * Process additional data processors
+ *
+ * @param array $page
+ * @param array $processorConfiguration
+ */
+ protected function processAdditionalDataProcessors($page, $processorConfiguration)
+ {
+ if (is_array($page['children'])) {
+ foreach ($page['children'] as $key => $item) {
+ $page['children'][$key] = $this->processAdditionalDataProcessors($item, $processorConfiguration);
+ }
+ }
+ /** @var ContentObjectRenderer $recordContentObjectRenderer */
+ $recordContentObjectRenderer = GeneralUtility::makeInstance(ContentObjectRenderer::class);
+ $recordContentObjectRenderer->start($page['data'], 'pages');
+ $processedPage = $this->contentDataProcessor->process($recordContentObjectRenderer, $processorConfiguration, $page);
+ return $processedPage;
+ }
+
+ /**
+ * Gets the data of the current record in JSON format
+ *
+ * @return string JSON encoded data
+ */
+ public function getDataAsJson()
+ {
+ return $this->jsonEncode($this->cObj->data);
+ }
+
+ /**
+ * This UserFunc encodes the content as Json
+ *
+ * @param string $content
+ * @param array $conf
+ * @return string JSON encoded content
+ */
+ public function jsonEncodeUserFunc($content, $conf)
+ {
+ $content = $this->jsonEncode($content);
+ return $content;
+ }
+
+ /**
+ * JSON Encode
+ *
+ * @param mixed $value
+ * @return string
+ */
+ public function jsonEncode($value)
+ {
+ return json_encode($value, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP | JSON_UNESCAPED_UNICODE);
+ }
+
+ /**
+ * This UserFunc gets the link and the target
+ *
+ * @param array $menuItem
+ * @param array $conf
+ * @return void
+ */
+ public function replacePlaceholderInRenderedMenuItem($menuItem, $conf)
+ {
+ $link = $this->jsonEncode($menuItem['linkHREF']['HREF']);
+ $target = $this->jsonEncode($menuItem['linkHREF']['TARGET']);
+
+ $menuItem['parts']['title'] = str_replace(self::LINK_PLACEHOLDER, $link, $menuItem['parts']['title']);
+ $menuItem['parts']['title'] = str_replace(self::TARGET_PLACEHOLDER, $target, $menuItem['parts']['title']);
+
+ return $menuItem;
+ }
+}