TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:00 +02:00
commit f9941541b7
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+<?php
+
+declare(strict_types=1);
+
+/*
+ * 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!
+ */
+
+namespace TYPO3\CMS\Backend\Form\FieldInformation;
+
+use TYPO3\CMS\Backend\Form\AbstractNode;
+use TYPO3\CMS\Backend\View\BackendLayoutView;
+use TYPO3\CMS\Core\Localization\LanguageService;
+
+/**
+ * This field information node is used for the pages backend_layout
+ * field to inform about a possible backend layout, inherited form
+ * a parent page.
+ *
+ * @internal
+ */
+class BackendLayoutFromParentPage extends AbstractNode
+{
+    public function __construct(
+        private readonly BackendLayoutView $backendLayoutView,
+    ) {}
+
+    /**
+     * Handler for single nodes
+     *
+     * @return array As defined in initializeResultArray() of AbstractNode
+     */
+    public function render(): array
+    {
+        if ($this->data['tableName'] !== 'pages' || $this->data['fieldName'] !== 'backend_layout') {
+            throw new \RuntimeException(
+                'The backendLayoutFromParentPage field information can only be used for the backend_layout field of the pages table.',
+                1622109821
+            );
+        }
+
+        $resultArray = $this->initializeResultArray();
+        $parameterArray = $this->data['parameterArray'];
+
+        // In case the backend_layout field of the current page is not empty, no backend layout will be inherited.
+        if (!empty($parameterArray['itemFormElValue'])) {
+            return $resultArray;
+        }
+
+        $backendLayoutInformation = '';
+        $languageService = $this->getLanguageService();
+
+        if ($this->data['command'] === 'new') {
+            // In case we deal with a new record, we try to find a possible inherited backend layout in
+            // the rootline. Since there might be further actions, e.g. DataHandler hooks, the actually
+            // resolved backend layout can only be determined, once the record is saved. For now we just
+            // inform about the backend layout, which will most likely be used.
+            foreach ($this->data['rootline'] as $page) {
+                if (!empty($page['backend_layout_next_level']) && ($page['uid'] ?? false)) {
+                    $backendLayoutInformation = sprintf(
+                        $languageService->sL('LLL:EXT:core/Resources/Private/Language/locallang_core.xlf:formEngine.pages.backendLayout.information.inheritFromParentPage'),
+                        $this->getFieldValueLabel($parameterArray['fieldConf'], $page['backend_layout_next_level'])
+                    );
+                    break;
+                }
+            }
+        } else {
+            // Get the resolved backend layout for the current page.
+            $backendLayout = $this->backendLayoutView->getBackendLayoutForPage((int)($this->data['databaseRow']['uid'] ?? $this->data['effectivePid'] ?? 0));
+            $backendLayoutInformation = sprintf(
+                $languageService->sL('LLL:EXT:core/Resources/Private/Language/locallang_core.xlf:formEngine.pages.backendLayout.information.inheritedFromParentPage'),
+                $languageService->sL($backendLayout->getTitle())
+            );
+        }
+
+        if ($backendLayoutInformation !== '') {
+            $resultArray['html'] = '<p class="text-variant">' . htmlspecialchars($backendLayoutInformation) . '</p>';
+        }
+
+        return $resultArray;
+    }
+
+    protected function getFieldValueLabel(array $fieldConfiguration, string $fieldValue): string
+    {
+        foreach ($fieldConfiguration['config']['items'] as $item) {
+            if (($item['value'] ?? '') === $fieldValue && !empty($item['label'])) {
+                return $item['label'];
+            }
+        }
+
+        $invalidValue = sprintf(
+            $this->getLanguageService()->sL('LLL:EXT:core/Resources/Private/Language/locallang_core.xlf:labels.noMatchingValue'),
+            $fieldValue
+        );
+
+        return '[ ' . $invalidValue . ' ]';
+    }
+
+    protected function getLanguageService(): LanguageService
+    {
+        return $GLOBALS['LANG'];
+    }
+}