function ckeditor5_form_filter_format_form_alter

Implements hook_form_FORM_ID_alter().

File

core/modules/ckeditor5/ckeditor5.module, line 122

Code

function ckeditor5_form_filter_format_form_alter(array &$form, FormStateInterface $form_state, $form_id) {
    $editor = $form_state->get('editor');
    // CKEditor 5 plugin config determines the available HTML tags. If an HTML
    // restricting filter is enabled and the editor is CKEditor 5, the 'Allowed
    // HTML tags' field is made read only and automatically populated with the
    // values needed by CKEditor 5 plugins.
    // @see \Drupal\ckeditor5\Plugin\Editor\CKEditor5::buildConfigurationForm()
    if ($editor && $editor->getEditor() === 'ckeditor5') {
        if (isset($form['filters']['settings']['filter_html']['allowed_html'])) {
            $filter_allowed_html =& $form['filters']['settings']['filter_html']['allowed_html'];
            $filter_allowed_html['#value_callback'] = [
                CKEditor5::class,
                'getGeneratedAllowedHtmlValue',
            ];
            // Set readonly and add the form-disabled wrapper class as using #disabled
            // or the disabled attribute will prevent the new values from being
            // validated.
            $filter_allowed_html['#attributes']['readonly'] = TRUE;
            $filter_allowed_html['#wrapper_attributes']['class'][] = 'form-disabled';
            $filter_allowed_html['#description'] = t('With CKEditor 5 this is a
          read-only field. The allowed HTML tags and attributes are determined
          by the CKEditor 5 configuration. Manually removing tags would break
          enabled functionality, and any manually added tags would be removed by
          CKEditor 5 on render.');
            // The media_filter_format_edit_form_validate validator is not needed
            // with CKEditor 5 as it exists to enforce the inclusion of specific
            // allowed tags that are added automatically by CKEditor 5. The
            // validator is removed so it does not conflict with the automatic
            // addition of those allowed tags.
            $key = array_search('media_filter_format_edit_form_validate', $form['#validate']);
            if ($key !== FALSE) {
                unset($form['#validate'][$key]);
            }
        }
    }
    // Override the AJAX callbacks for changing editors, so multiple areas of the
    // form can be updated on change.
    $form['editor']['editor']['#ajax'] = [
        'callback' => '_update_ckeditor5_html_filter',
        'trigger_as' => [
            'name' => 'editor_configure',
        ],
    ];
    $form['editor']['configure']['#ajax'] = [
        'callback' => '_update_ckeditor5_html_filter',
    ];
    $form['editor']['settings']['subform']['toolbar']['items']['#ajax'] = [
        'callback' => '_update_ckeditor5_html_filter',
        'trigger_as' => [
            'name' => 'editor_configure',
        ],
        'event' => 'change',
        'ckeditor5_only' => 'true',
    ];
    foreach (Element::children($form['filters']['status']) as $filter_type) {
        $form['filters']['status'][$filter_type]['#ajax'] = [
            'callback' => '_update_ckeditor5_html_filter',
            'trigger_as' => [
                'name' => 'editor_configure',
            ],
            'event' => 'change',
            'ckeditor5_only' => 'true',
        ];
    }
    
    /**
     * Recursively adds AJAX listeners to plugin settings elements.
     *
     * These are added so allowed tags and other fields that have values
     * dependent on plugin settings can be updated via AJAX when these settings
     * are changed in the editor form.
     *
     * @param array $plugins_config_form
     *   The plugins config subform render array.
     */
    $add_listener = function (array &$plugins_config_form) use (&$add_listener) : void {
        $field_types = [
            'checkbox',
            'select',
            'radios',
            'textarea',
        ];
        if (isset($plugins_config_form['#type']) && in_array($plugins_config_form['#type'], $field_types) && !isset($plugins_config_form['#ajax'])) {
            $plugins_config_form['#ajax'] = [
                'callback' => '_update_ckeditor5_html_filter',
                'trigger_as' => [
                    'name' => 'editor_configure',
                ],
                'event' => 'change',
                'ckeditor5_only' => 'true',
            ];
        }
        foreach ($plugins_config_form as $key => &$value) {
            if (is_array($value) && !str_contains((string) $key, '#')) {
                $add_listener($value);
            }
        }
    };
    if (isset($form['editor']['settings']['subform']['plugins'])) {
        $add_listener($form['editor']['settings']['subform']['plugins']);
    }
    // Add an ID to the filter settings vertical tabs wrapper to facilitate AJAX
    // updates.
    $form['filter_settings']['#wrapper_attributes']['id'] = 'filter-settings-wrapper';
    $form['#after_build'][] = [
        CKEditor5::class,
        'assessActiveTextEditorAfterBuild',
    ];
    $form['#validate'][] = [
        CKEditor5::class,
        'validateSwitchingToCKEditor5',
    ];
    array_unshift($form['actions']['submit']['#submit'], 'ckeditor5_filter_format_edit_form_submit');
}