RichTextElement.php

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<?php
declare(strict_types = 1);
namespace ‪TYPO3\CMS\RteCKEditor\Form\Element;
 
/*
 * 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!
 */
 
use ‪TYPO3\CMS\Backend\Form\Element\AbstractFormElement;
use ‪TYPO3\CMS\Backend\Routing\UriBuilder;
use ‪TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
use ‪TYPO3\CMS\Core\Localization\Locales;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
use ‪TYPO3\CMS\Core\Utility\PathUtility;
 
class ‪RichTextElement extends ‪AbstractFormElement
{
    protected ‪$defaultFieldInformation = [
        'tcaDescription' => [
            'renderType' => 'tcaDescription',
        ],
    ];
 
    protected ‪$defaultFieldWizard = [
        'localizationStateSelector' => [
            'renderType' => 'localizationStateSelector',
        ],
        'otherLanguageContent' => [
            'renderType' => 'otherLanguageContent',
            'after' => [
                'localizationStateSelector'
            ],
        ],
        'defaultLanguageDifferences' => [
            'renderType' => 'defaultLanguageDifferences',
            'after' => [
                'otherLanguageContent',
            ],
        ],
    ];
 
    protected ‪$rteConfiguration = [];
 
    public function ‪render(): array
    {
        $resultArray = $this->‪initializeResultArray();
        $parameterArray = $this->data['parameterArray'];
        $config = $parameterArray['fieldConf']['config'];
 
        $fieldId = $this->‪sanitizeFieldId($parameterArray['itemFormElName']);
        $itemFormElementName = $this->data['parameterArray']['itemFormElName'];
 
        $value = $this->data['parameterArray']['itemFormElValue'] ?? '';
 
        $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);
 
        $attributes = [
            'style' => 'display:none',
            'data-formengine-validation-rules' => $this->‪getValidationDataAsJsonString($config),
            'id' => $fieldId,
            'name' => htmlspecialchars($itemFormElementName),
        ];
 
        $html = [];
        $html[] = '<div class="formengine-field-item t3js-formengine-field-item">';
        $html[] =   $fieldInformationHtml;
        $html[] =   '<div class="form-control-wrap">';
        $html[] =       '<div class="form-wizards-wrap">';
        $html[] =           '<div class="form-wizards-element">';
        $html[] =               '<textarea ' . GeneralUtility::implodeAttributes($attributes, true) . '>';
        $html[] =                   htmlspecialchars($value);
        $html[] =               '</textarea>';
        $html[] =           '</div>';
        if (!empty($fieldControlHtml)) {
            $html[] =           '<div class="form-wizards-items-aside">';
            $html[] =               '<div class="btn-group">';
            $html[] =                   $fieldControlHtml;
            $html[] =               '</div>';
            $html[] =           '</div>';
        }
        if (!empty($fieldWizardHtml)) {
            $html[] = '<div class="form-wizards-items-bottom">';
            $html[] = $fieldWizardHtml;
            $html[] = '</div>';
        }
        $html[] =       '</div>';
        $html[] =   '</div>';
        $html[] = '</div>';
 
        $resultArray['html'] = implode(LF, $html);
 
        $this->rteConfiguration = $config['richtextConfiguration']['editor'];
        $resultArray['requireJsModules'][] = [
            'ckeditor' => $this->‪getCkEditorRequireJsModuleCode($fieldId)
        ];
 
        return $resultArray;
    }
 
    protected function ‪getLanguageIsoCodeOfContent(): string
    {
        $currentLanguageUid = $this->data['databaseRow']['sys_language_uid'];
        if (is_array($currentLanguageUid)) {
            $currentLanguageUid = $currentLanguageUid[0];
        }
        $contentLanguageUid = (int)max($currentLanguageUid, 0);
        if ($contentLanguageUid) {
            $contentLanguage = $this->data['systemLanguageRows'][$currentLanguageUid]['iso'];
        } else {
            $contentLanguage = $this->rteConfiguration['config']['defaultContentLanguage'] ?? 'en_US';
            $languageCodeParts = explode('_', $contentLanguage);
            $contentLanguage = strtolower($languageCodeParts[0]) . ($languageCodeParts[1] ? '_' . strtoupper($languageCodeParts[1]) : '');
            // Find the configured language in the list of localization locales
            ‪$locales = GeneralUtility::makeInstance(Locales::class);
            // If not found, default to 'en'
            if (!in_array($contentLanguage, ‪$locales->getLocales(), true)) {
                $contentLanguage = 'en';
            }
        }
        return $contentLanguage;
    }
 
    protected function ‪getCkEditorRequireJsModuleCode(string $fieldId): string
    {
        $configuration = $this->‪prepareConfigurationForEditor();
 
        $externalPlugins = '';
        foreach ($this->‪getExtraPlugins() as $extraPluginName => $extraPluginConfig) {
            $configName = $extraPluginConfig['configName'] ?? $extraPluginName;
            if (!empty($extraPluginConfig['config']) && is_array($extraPluginConfig['config'])) {
                if (empty($configuration[$configName])) {
                    $configuration[$configName] = $extraPluginConfig['config'];
                } elseif (is_array($configuration[$configName])) {
                    $configuration[$configName] = array_replace_recursive($extraPluginConfig['config'], $configuration[$configName]);
                }
            }
            $configuration['extraPlugins'] .= ',' . $extraPluginName;
 
            $externalPlugins .= 'CKEDITOR.plugins.addExternal(';
            $externalPlugins .= GeneralUtility::quoteJSvalue($extraPluginName) . ',';
            $externalPlugins .= GeneralUtility::quoteJSvalue($extraPluginConfig['resource']) . ',';
            $externalPlugins .= '\'\');';
        }
 
        $jsonConfiguration = json_encode($configuration);
 
        // Make a hash of the configuration and append it to CKEDITOR.timestamp
        // This will mitigate browser caching issue when plugins are updated
        $configurationHash = GeneralUtility::shortMD5($jsonConfiguration);
 
        return 'function(CKEDITOR) {
                CKEDITOR.timestamp += "-' . $configurationHash . '";
                ' . $externalPlugins . '
                require([\'jquery\', \'TYPO3/CMS/Backend/FormEngine\'], function($, FormEngine) {
                    $(function(){
                        var escapedFieldSelector = \'#\' + $.escapeSelector(\'' . $fieldId . '\');
                        CKEDITOR.replace("' . $fieldId . '", ' . $jsonConfiguration . ');
                        CKEDITOR.instances["' . $fieldId . '"].on(\'change\', function(e) {
                            var commands = e.sender.commands;
                            CKEDITOR.instances["' . $fieldId . '"].updateElement();
                            FormEngine.Validation.validate();
                            FormEngine.Validation.markFieldAsChanged($(escapedFieldSelector));
 
                            // remember changes done in maximized state and mark field as changed, once minimized again
                            if (typeof commands.maximize !== \'undefined\' && commands.maximize.state === 1) {
                                CKEDITOR.instances["' . $fieldId . '"].on(\'maximize\', function(e) {
                                    $(this).off(\'maximize\');
                                    FormEngine.Validation.markFieldAsChanged($(escapedFieldSelector));
                                });
                            }
                        });
                        CKEDITOR.instances["' . $fieldId . '"].on(\'mode\', function() {
                            // detect field changes in source mode
                            if (this.mode === \'source\') {
                                var sourceArea = CKEDITOR.instances["' . $fieldId . '"].editable();
                                sourceArea.attachListener(sourceArea, \'change\', function() {
                                    FormEngine.Validation.markFieldAsChanged($(escapedFieldSelector));
                                });
                            }
                        });
                        $(document).on(\'inline:sorting-changed\', function() {
                            CKEDITOR.instances["' . $fieldId . '"].destroy();
                            CKEDITOR.replace("' . $fieldId . '", ' . $jsonConfiguration . ');
                        });
                        $(document).on(\'flexform:sorting-changed\', function() {
                            CKEDITOR.instances["' . $fieldId . '"].destroy();
                            CKEDITOR.replace("' . $fieldId . '", ' . $jsonConfiguration . ');
                        });
                    });
                });
        }';
    }
 
    protected function ‪getExtraPlugins(): array
    {
        $urlParameters = [
            'P' => [
                'table'      => $this->data['tableName'],
                'uid'        => $this->data['databaseRow']['uid'],
                'fieldName'  => $this->data['fieldName'],
                'recordType' => $this->data['recordTypeValue'],
                'pid'        => $this->data['effectivePid'],
                'richtextConfigurationName' => $this->data['parameterArray']['fieldConf']['config']['richtextConfigurationName']
            ]
        ];
 
        $pluginConfiguration = [];
        if (isset($this->rteConfiguration['externalPlugins']) && is_array($this->rteConfiguration['externalPlugins'])) {
            $uriBuilder = GeneralUtility::makeInstance(UriBuilder::class);
            foreach ($this->rteConfiguration['externalPlugins'] as $pluginName => $configuration) {
                $pluginConfiguration[$pluginName] = [
                    'configName' => $configuration['configName'] ?? $pluginName,
                    'resource' => $this->‪resolveUrlPath($configuration['resource'])
                ];
                unset($configuration['configName'], $configuration['resource']);
 
                if ($configuration['route']) {
                    $configuration['routeUrl'] = (string)$uriBuilder->buildUriFromRoute($configuration['route'], $urlParameters);
                }
 
                $pluginConfiguration[$pluginName]['config'] = $configuration;
            }
        }
        return $pluginConfiguration;
    }
 
    protected function ‪replaceLanguageFileReferences(array $configuration): array
    {
        foreach ($configuration as $key => $value) {
            if (is_array($value)) {
                $configuration[$key] = $this->‪replaceLanguageFileReferences($value);
            } elseif (is_string($value) && stripos($value, 'LLL:') === 0) {
                $configuration[$key] = $this->‪getLanguageService()->‪sL($value);
            }
        }
        return $configuration;
    }
 
    protected function ‪replaceAbsolutePathsToRelativeResourcesPath(array $configuration): array
    {
        foreach ($configuration as $key => $value) {
            if (is_array($value)) {
                $configuration[$key] = $this->‪replaceAbsolutePathsToRelativeResourcesPath($value);
            } elseif (is_string($value) && stripos($value, 'EXT:') === 0) {
                $configuration[$key] = $this->‪resolveUrlPath($value);
            }
        }
        return $configuration;
    }
 
    protected function ‪resolveUrlPath(string $value): string
    {
        $value = GeneralUtility::getFileAbsFileName($value);
        return ‪PathUtility::getAbsoluteWebPath($value);
    }
 
    protected function ‪prepareConfigurationForEditor(): array
    {
        // Ensure custom config is empty so nothing additional is loaded
        // Of course this can be overridden by the editor configuration below
        $configuration = [
            'customConfig' => '',
        ];
 
        if (is_array($this->rteConfiguration['config'])) {
            $configuration = array_replace_recursive($configuration, $this->rteConfiguration['config']);
        }
        // Set the UI language of the editor if not hard-coded by the existing configuration
        if (empty($configuration['language'])) {
            $configuration['language'] = $this->‪getBackendUser()->uc['lang'] ?: ($this->‪getBackendUser()->user['lang'] ?: 'en');
        }
        $configuration['contentsLanguage'] = $this->‪getLanguageIsoCodeOfContent();
 
        // Replace all label references
        $configuration = $this->‪replaceLanguageFileReferences($configuration);
        // Replace all paths
        $configuration = $this->‪replaceAbsolutePathsToRelativeResourcesPath($configuration);
 
        // there are some places where we define an array, but it needs to be a list in order to work
        if (is_array($configuration['extraPlugins'])) {
            $configuration['extraPlugins'] = implode(',', $configuration['extraPlugins']);
        }
        if (is_array($configuration['removePlugins'])) {
            $configuration['removePlugins'] = implode(',', $configuration['removePlugins']);
        }
        if (is_array($configuration['removeButtons'])) {
            $configuration['removeButtons'] = implode(',', $configuration['removeButtons']);
        }
 
        return $configuration;
    }
 
    protected function ‪sanitizeFieldId(string $itemFormElementName): string
    {
        $fieldId = preg_replace('/[^a-zA-Z0-9_:.-]/', '_', $itemFormElementName);
        return htmlspecialchars(preg_replace('/^[^a-zA-Z]/', 'x', $fieldId));
    }
 
    protected function ‪getBackendUser()
    {
        return ‪$GLOBALS['BE_USER'];
    }
}