SelectSingleBoxElement.php

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<?php
 
/*
 * 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\Element;
 
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
use ‪TYPO3\CMS\Core\Utility\MathUtility;
use ‪TYPO3\CMS\Core\Utility\StringUtility;
 
class ‪SelectSingleBoxElement extends ‪AbstractFormElement
{
    protected ‪$defaultFieldInformation = [
        'tcaDescription' => [
            'renderType' => 'tcaDescription',
        ],
    ];
 
    protected ‪$defaultFieldControl = [
        'resetSelection' => [
            'renderType' => 'resetSelection',
        ],
    ];
 
    protected ‪$defaultFieldWizard = [
        'localizationStateSelector' => [
            'renderType' => 'localizationStateSelector',
        ],
        'otherLanguageContent' => [
            'renderType' => 'otherLanguageContent',
            'after' => [
                'localizationStateSelector'
            ],
        ],
        'defaultLanguageDifferences' => [
            'renderType' => 'defaultLanguageDifferences',
            'after' => [
                'otherLanguageContent',
            ],
        ],
    ];
 
    public function ‪render()
    {
        $languageService = $this->‪getLanguageService();
        $resultArray = $this->‪initializeResultArray();
 
        $parameterArray = $this->data['parameterArray'];
        // Field configuration from TCA:
        $config = $parameterArray['fieldConf']['config'];
        $selectItems = $parameterArray['fieldConf']['config']['items'];
        $disabled = !empty($config['readOnly']);
 
        // Get values in an array (and make unique, which is fine because there can be no duplicates anyway):
        $itemArray = array_flip($parameterArray['itemFormElValue']);
        $width = $this->‪formMaxWidth($this->defaultInputWidth);
 
        $optionElements = [];
        foreach ($selectItems as $i => $item) {
            $value = $item[1];
            $attributes = [];
            // Selected or not by default
            if (isset($itemArray[$value])) {
                $attributes['selected'] = 'selected';
                unset($itemArray[$value]);
            }
            // Non-selectable element
            if ((string)$value === '--div--') {
                $attributes['disabled'] = 'disabled';
                $attributes['class'] = 'formcontrol-select-divider';
            }
            $optionElements[] = $this->‪renderOptionElement($value, $item[0], $attributes);
        }
 
        $selectElement = $this->‪renderSelectElement($optionElements, $parameterArray, $config);
 
        $fieldInformationResult = $this->‪renderFieldInformation();
        $fieldInformationHtml = $fieldInformationResult['html'];
        $resultArray = $this->‪mergeChildReturnIntoExistingResult($resultArray, $fieldInformationResult, false);
 
        $fieldControlResult = $this->‪renderFieldControl();
        $fieldControlHtml = $fieldControlResult['html'];
        $resultArray = $this->‪mergeChildReturnIntoExistingResult($resultArray, $fieldControlResult, false);
 
        $fieldWizardResult = $this->‪renderFieldWizard();
        $fieldWizardHtml = $fieldWizardResult['html'];
        $resultArray = $this->‪mergeChildReturnIntoExistingResult($resultArray, $fieldWizardResult, false);
 
        $html = [];
        $html[] = '<div class="formengine-field-item t3js-formengine-field-item">';
        $html[] = $fieldInformationHtml;
        $html[] =   '<div class="form-control-wrap" style="max-width: ' . $width . 'px">';
        $html[] =       '<div class="form-wizards-wrap form-wizards-aside">';
        $html[] =           '<div class="form-wizards-element">';
        if (!$disabled) {
            // Add an empty hidden field which will send a blank value if all items are unselected.
            $html[] =           '<input type="hidden" name="' . htmlspecialchars($parameterArray['itemFormElName']) . '" value="">';
        }
        $html[] =               $selectElement;
        $html[] =           '</div>';
        if (!$disabled) {
            if (!empty($fieldControlHtml)) {
                $html[] =       '<div class="form-wizards-items-aside">';
                $html[] =           $fieldControlHtml;
                $html[] =       '</div>';
            }
            $html[] = '</div>'; // Close form-wizards-aside
            $html[] =   '<p>';
            $html[] =       '<em>' . htmlspecialchars($languageService->sL('LLL:EXT:core/Resources/Private/Language/locallang_core.xlf:labels.holdDownCTRL')) . '</em>';
            $html[] =   '</p>';
            if (!empty($fieldWizardHtml)) {
                $html[] = '<div class="form-wizards-items-bottom">';
                $html[] = $fieldWizardHtml;
                $html[] = '</div>';
            }
        } else {
            $html[] = '</div>'; // Close form-wizards-aside
        }
        $html[] =   '</div>';
        $html[] = '</div>';
 
        $resultArray['html'] = implode(LF, $html);
        return $resultArray;
    }
 
    protected function ‪renderSelectElement(array $optionElements, array $parameterArray, array $config)
    {
        $selectItems = $parameterArray['fieldConf']['config']['items'];
        $size = (int)$config['size'];
        $cssPrefix = $size === 1 ? 'tceforms-select' : 'tceforms-multiselect';
 
        if ($config['autoSizeMax']) {
            $size = ‪MathUtility::forceIntegerInRange(
                count($selectItems) + 1,
                ‪MathUtility::forceIntegerInRange($size, 1),
                $config['autoSizeMax']
            );
        }
 
        $attributes = [
            'name' => $parameterArray['itemFormElName'] . '[]',
            'multiple' => 'multiple',
            'onchange' => implode('', $parameterArray['fieldChangeFunc']),
            'id' => ‪StringUtility::getUniqueId($cssPrefix),
            'class' => 'form-control ' . $cssPrefix,
            'data-formengine-validation-rules' => $this->‪getValidationDataAsJsonString($config),
        ];
        if ($size) {
            $attributes['size'] = (string)$size;
        }
        if ($config['readOnly']) {
            $attributes['disabled'] = 'disabled';
        }
 
        $html = [];
        $html[] = '<select ' . GeneralUtility::implodeAttributes($attributes, true) . '>';
        $html[] =   implode(LF, $optionElements);
        $html[] = '</select>';
 
        return implode(LF, $html);
    }
 
    protected function ‪renderOptionElement($value, $label, array $attributes = [])
    {
        $attributes['value'] = $value;
        $html = [
            '<option ' . GeneralUtility::implodeAttributes($attributes, true) . '>',
                htmlspecialchars($this->‪appendValueToLabelInDebugMode($label, $value), ENT_COMPAT, 'UTF-8', false),
            '</option>'
 
        ];
 
        return implode('', $html);
    }
}