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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\NodeExpansion;
use TYPO3\CMS\Backend\Form\AbstractNode;
use TYPO3\CMS\Core\Service\DependencyOrderingService;
use TYPO3\CMS\Core\Utility\GeneralUtility;
/**
* Field information are additional HTML on a single node level that are typically
* shown between the label and the main element. They are registered in ['config']['fieldInformation']
* TCA section and each element may merge that with default registered information.
*
* Field information must not add additional functionality to the element. They are only
* allowed to add "informational" stuff like links, div and spans and similar.
*/
class FieldInformation extends AbstractNode
{
/**
* Order the list of field information to be rendered with the ordering service,
* then call each information element through the node factory and merge their
* results.
*
* @return array Result array
*/
public function render(): array
{
$result = $this->initializeResultArray();
if (!isset($this->data['renderData']['fieldInformation'])) {
return $result;
}
$fieldInformation = $this->data['renderData']['fieldInformation'];
$orderingService = GeneralUtility::makeInstance(DependencyOrderingService::class);
$orderedFieldInformation = $orderingService->orderByDependencies($fieldInformation, 'before', 'after');
foreach ($orderedFieldInformation as $anOrderedFieldInformation => $orderedFieldInformationConfiguration) {
if (isset($orderedFieldInformationConfiguration['disabled']) && $orderedFieldInformationConfiguration['disabled']
|| !isset($fieldInformation[$anOrderedFieldInformation]['renderType'])
) {
// Don't consider this control if disabled.
// Also ignore if renderType is not given.
// Missing renderType may happen if an element registers a default field control
// as disabled, and TCA enabled that. If then additionally for instance the
// element renderType is changed to an element that doesn't register the control
// by default anymore, this would then fatal if we don't continue here.
// @todo: the above scenario indicates a small configuration flaw, maybe log an error somewhere?
continue;
}
$options = $this->data;
$options['renderType'] = $fieldInformation[$anOrderedFieldInformation]['renderType'];
$options['renderData']['fieldInformationOptions'] = $orderedFieldInformationConfiguration['options'] ?? [];
$informationResult = $this->nodeFactory->create($options)->render();
$allowedTags = '<a><br><br/><div><em><i><p><strong><span><code>';
if (strip_tags($informationResult['html'], $allowedTags) !== $informationResult['html']) {
throw new \RuntimeException(
'The field information API supports only a limited number of HTML tags within the result'
. ' HTML of children. Allowed tags are: "' . $allowedTags . '" Child'
. ' ' . $options['renderType'] . ' violated this rule. Either remove offending tags or'
. ' switch to a different API like "fieldWizard" or "fieldControl".',
1485084419
);
}
$result = $this->mergeChildReturnIntoExistingResult($result, $informationResult);
}
return $result;
}
}