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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\Fluid\ViewHelpers\Form\Select;
use TYPO3\CMS\Fluid\ViewHelpers\Form\AbstractFormFieldViewHelper;
use TYPO3\CMS\Fluid\ViewHelpers\Form\SelectViewHelper;
/**
* Adds custom :html:`<option>` tags inside an :ref:`<f:form.select> <typo3-fluid-form-select>`.
*/
final class OptionViewHelper extends AbstractFormFieldViewHelper
{
/**
* @var string
*/
protected $tagName = 'option';
public function initializeArguments(): void
{
$this->registerUniversalTagAttributes();
$this->registerArgument('selected', 'boolean', 'If set, overrides automatic detection of selected state for this option.');
$this->registerArgument('additionalAttributes', 'array', 'Additional tag attributes. They will be added directly to the resulting HTML tag.');
$this->registerArgument('data', 'array', 'Additional data-* attributes. They will each be added with a "data-" prefix.');
$this->registerTagAttribute('value', 'mixed', 'Value to be inserted in HTML tag - must be convertible to string!');
}
public function render(): string
{
$childContent = $this->renderChildren();
$this->tag->setContent($childContent);
$value = $this->arguments['value'] ?? $childContent;
if ($this->arguments['selected'] ?? $this->isValueSelected((string)$value)) {
$this->tag->addAttribute('selected', 'selected');
}
$this->tag->addAttribute('value', $value);
$parentRequestedFormTokenFieldName = $this->renderingContext->getViewHelperVariableContainer()->get(
SelectViewHelper::class,
'registerFieldNameForFormTokenGeneration'
);
if ($parentRequestedFormTokenFieldName) {
// parent (select field) has requested this option must add one more
// entry in the token generation registry for one additional potential
// value of the field. Happens when "multiple" is true on parent.
$this->registerFieldNameForFormTokenGeneration($parentRequestedFormTokenFieldName);
}
return $this->tag->render();
}
protected function isValueSelected(string $value): bool
{
$selectedValue = $this->renderingContext->getViewHelperVariableContainer()->get(SelectViewHelper::class, 'selectedValue');
if (is_array($selectedValue)) {
return in_array($value, array_map(strval(...), $selectedValue), true);
}
if ($selectedValue instanceof \Iterator) {
return in_array($value, array_map(strval(...), iterator_to_array($selectedValue)), true);
}
return $value === (string)$selectedValue;
}
}