datafield-1.x-dev/src/Plugin/DataField/FieldWidget/TextfieldWidget.php

<?php

namespace Drupal\datafield\Plugin\DataField\FieldWidget;

use Drupal\Core\Field\Attribute\FieldWidget;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\datafield\Plugin\DataFieldWidgetInterface;
use Symfony\Component\Validator\ConstraintViolationInterface;

/**
 * Plugin implementation of the 'text_textfield' widget.
 */
#[FieldWidget(
  id: 'text_format',
  label: new TranslatableMarkup('Text format'),
  field_types: ['text'],
)]
class TextfieldWidget implements DataFieldWidgetInterface {
  use StringTranslationTrait;

  /**
   * {@inheritdoc}
   */
  public function errorElement(array $element, ConstraintViolationInterface $violation, array $form, FormStateInterface $form_state) {
    $subfield = $element['#subfield'];
    if (empty($element[$subfield]['format']['#access'])) {
      // Ignore validation errors for formats that may not be changed,
      // such as when existing formats become invalid.
      // See \Drupal\filter\Element\TextFormat::processFormat().
      return FALSE;
    }
    return $element;
  }

  /**
   * {@inheritdoc}
   */
  public function getFormElement(&$element, $item, $setting) {
    if (!empty($setting['rows'])) {
      $element['#rows'] = $setting['rows'];
    }
    if (!empty($element['placeholder'])) {
      $element['#placeholder'] = $setting['placeholder'];
    }
    $element['#type'] = 'text_format';
    $element['#format'] = 'basic_html';
    $element['#base_type'] = 'textarea';
  }

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    $options['size'] = 30;
    $options['placeholder'] = t('Please type');
    return $options;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $widget_settings = $form['#settings'];
    return [
      'size' => [
        '#type' => 'number',
        '#title' => $this->t('Size'),
        '#default_value' => $widget_settings['size'] ?? self::defaultSettings()['size'],
        '#min' => 1,
      ],
      'placeholder' => [
        '#type' => 'textfield',
        '#title' => $this->t('Placeholder'),
        '#default_value' => $widget_settings['placeholder'] ?? self::defaultSettings()['placeholder'],
      ],
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function massageFormValues($value, array $form, FormStateInterface $form_state) {
    if (is_array($value) && isset($value['value'])) {
      if ($value['value'] == '') {
        return NULL;
      }
      return $value['value'];
    }
    return $value;
  }

}