* * */ class Typo3ExampleMenuViewhelper extends AbstractViewHelper { use CompileWithRenderStatic; protected $escapeOutput = false; /** * Initialize arguments */ public function initializeArguments(): void { $this->registerArgument( 'needle', 'int', 'Page ID to check if in rootline (Default = root page ID)', false, null, ); $this->registerArgument( 'default', 'int', 'Default value to return if page needle is not found in rootline (Default = root page ID)', false, null ); $this->registerArgument( 'depth', 'int', 'Depth of the rootline to consider for searching for arg "needle" starting from arg "start" (Default = 3)', false, 3 ); $this->registerArgument( 'start', 'int', 'Start Page ID for getting the rootline (Default = current page ID)', false, null ); } public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext) { $default = $arguments['default']; $depth = $arguments['depth']; $start = $arguments['start']; $currentPid = null === $start ? $GLOBALS['TSFE']->id : $start; $rootline = self::getRootLine($currentPid, reverse: true); $rootlineUids = array_map(static fn ($page): int => $page['uid'], $rootline); $rootUid = $rootlineUids[0]; $needle = $arguments['needle'] === null ? $rootUid : $arguments['needle']; if (in_array($needle, $rootlineUids)) { // Return closest parent of needle within depth $rootlineUids = array_slice($rootlineUids, 0, $depth); return end($rootlineUids); } return null === $default ? $rootUid : $default; } public static function getRootLine( ?int $pageUid = null, bool $reverse = false ): array { if (null === $pageUid) { $pageUid = $GLOBALS['TSFE']->id; } /** @var RootlineUtility $rootLineUtility */ $rootLineUtility = GeneralUtility::makeInstance(RootlineUtility::class, $pageUid); $rootline = $rootLineUtility->get(); if ($reverse) { $rootline = array_reverse($rootline); } return $rootline; } }