LanguageSelectWidget.php in Custom Language field 8

Namespace

Drupal\languagefield\Plugin\Field\FieldWidget

File

src/Plugin/Field/FieldWidget/LanguageSelectWidget.php

<?php

namespace Drupal\languagefield\Plugin\Field\FieldWidget;

use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\WidgetBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\languagefield\Plugin\Field\FieldType\LanguageItem;

/**
 * Plugin implementation of the 'language_select' widget.
 *
 * @FieldWidget(
 *   id = "languagefield_select",
 *   label = @Translation("Language select list"),
 *   field_types = {
 *     "language_field",
 *   }
 * )
 */
class LanguageSelectWidget extends WidgetBase {

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    $settings = [
      'format' => [
        'name' => 'name',
      ],
    ] + parent::defaultSettings();
    return $settings;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $settings = $this
      ->getSettings();
    $element = parent::settingsForm($form, $form_state);
    $element['format'] = [
      '#type' => 'checkboxes',
      '#title' => $this
        ->t('Display in widget'),
      '#description' => $this
        ->t('Select the elements you want to show. The elements will be concatenated when showing the field.'),
      '#default_value' => $settings['format'],
      '#options' => LanguageItem::settingsOptions('widget'),
      '#required' => TRUE,
    ];
    return $element;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = parent::settingsSummary();
    $settings = $this
      ->getSettings()['format'];
    $options = LanguageItem::settingsOptions('widget');
    if (empty($settings)) {
      $summary[] = $this
        ->t('** Not set **');
      return $summary;
    }
    foreach ($settings as $value) {
      switch ($value) {
        case '0':

          // Option is not selected.
          break;
        default:
          $summary[] = isset($options[$value]) ? $options[$value] : '...';
          break;
      }
    }
    return $summary;
  }

  /**
   * @inheritdoc
   */
  public function massageFormValues(array $values, array $form, FormStateInterface $form_state) {
    $values = parent::massageFormValues($values, $form, $form_state);

    // Convert the values to real language codes,
    // but ONLY on Entity form, NOT in the 'field settings - default value'.
    $build_info = $form_state
      ->getBuildInfo();
    if (isset($build_info['form_id']) && $build_info['form_id'] !== 'field_config_edit_form') {
      foreach ($values as &$value) {
        $value['value'] = LanguageItem::getLanguageConfigurationValues($value['value']);
      }
    }
    return $values;
  }

  /**
   * {@inheritdoc}
   */
  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {

    /** @var \Drupal\languagefield\Plugin\Field\FieldType\LanguageItem $item */
    $item = $items[$delta];
    $value = isset($item->value) ? $item->value : NULL;
    $languages = $item
      ->getSettableOptions();
    $element['value'] = [
      '#title' => $element['#title_display'] == 'invisible' ? NULL : $element['#title'],
      '#description' => $element['#description'],
      // Using 'language_select' would add dependency on core Language module.
      '#type' => 'select',
      '#required' => $element['#required'],
      '#options' => $languages,
      '#empty_value' => '',
      '#default_value' => isset($languages[$value]) ? $value : '',
    ];
    return $element;
  }

}

Classes

Name	Description
LanguageSelectWidget	Plugin implementation of the 'language_select' widget.