9.5/_checkbox_view_helper_8php_source.html

<?php

namespace ‪TYPO3\CMS\Fluid\ViewHelpers\Form;


/*

 * 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!

 */


class ‪CheckboxViewHelper extends ‪AbstractFormFieldViewHelper

{

    protected ‪$tagName = 'input';


    public function ‪initializeArguments()

    {

        parent::initializeArguments();

        $this->registerTagAttribute(

            'disabled',

            'string',

            'Specifies that the input element should be disabled when the page loads'

        );

        $this->registerArgument(

            'errorClass',

            'string',

            'CSS class to set if there are errors for this ViewHelper',

            false,

            'f3-form-error'

        );

        $this->overrideArgument('value', 'string', 'Value of input tag. Required for checkboxes', true);

        $this->registerUniversalTagAttributes();

        $this->registerArgument('checked', 'bool', 'Specifies that the input element should be preselected');

        $this->registerArgument('multiple', 'bool', 'Specifies whether this checkbox belongs to a multivalue (is part of a checkbox group)', false, false);

    }


    public function ‪render()

    {

        $checked = $this->arguments['checked'];

        $multiple = $this->arguments['multiple'];


        $this->tag->addAttribute('type', 'checkbox');


        $nameAttribute = $this->‪getName();

        $valueAttribute = $this->‪getValueAttribute();

        $propertyValue = null;

        if ($this->‪hasMappingErrorOccurred()) {

            $propertyValue = $this->‪getLastSubmittedFormData();

        }

        if ($checked === null && $propertyValue === null) {

            $propertyValue = $this->‪getPropertyValue();

        }


        if ($propertyValue instanceof \Traversable) {

            $propertyValue = iterator_to_array($propertyValue);

        }

        if (is_array($propertyValue)) {

            $propertyValue = array_map([$this, 'convertToPlainValue'], $propertyValue);

            if ($checked === null) {

                $checked = in_array($valueAttribute, $propertyValue);

            }

            $nameAttribute .= '[]';

        } elseif ($multiple === true) {

            $nameAttribute .= '[]';

        } elseif ($propertyValue !== null) {

            $checked = (boolean)$propertyValue === (boolean)$valueAttribute;

        }


        $this->‪registerFieldNameForFormTokenGeneration($nameAttribute);

        $this->tag->addAttribute('name', $nameAttribute);

        $this->tag->addAttribute('value', $valueAttribute);

        if ($checked === true) {

            $this->tag->addAttribute('checked', 'checked');

        }


        $this->‪setErrorClassAttribute();

        $hiddenField = $this->‪renderHiddenFieldForEmptyValue();

        return $hiddenField . $this->tag->render();

    }

}