DownloadLinkWidget.php in Download 8.2

Contains \Drupal\download\Plugin\Field\FieldWidget\DownloadLinkWidget.

Namespace

Drupal\download\Plugin\Field\FieldWidget

File

src/Plugin/Field/FieldWidget/DownloadLinkWidget.php

<?php

/**
 * @file
 * Contains \Drupal\download\Plugin\Field\FieldWidget\DownloadLinkWidget.
 */
namespace Drupal\download\Plugin\Field\FieldWidget;

use Drupal\Core\Field\WidgetInterface;
use Drupal\Core\Field\WidgetBase;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\file\Plugin\Field\FieldType\FileFieldItemList;

/**
 * @FieldWidget(
 *  id = "download_link_widget",
 *  label = @Translation("Field selector"),
 *  field_types = {"download_link"}
 * )
 */
class DownloadLinkWidget extends WidgetBase implements WidgetInterface {

  /**
   * {@inheritdoc}
   */
  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
    $value = !$items[$delta]
      ->isEmpty() ? $items[$delta]
      ->get('download_fields')
      ->getValue() : array();
    $default_label = $items[$delta]
      ->get('download_label')
      ->getValue() != '' ? $items[$delta]
      ->get('download_label')
      ->getValue() : '';
    $default_value = is_array($value) ? $value : unserialize($value);
    $widget = $element;
    $widget['#delta'] = $delta;
    $entity = $items
      ->getEntity();
    $options = array();
    foreach ($entity
      ->getFields() as $field_name => $field) {
      if ($field instanceof FileFieldItemList) {
        $options[$field_name] = $field
          ->getFieldDefinition()
          ->getLabel();
      }
    }
    $element += array(
      '#type' => 'fieldset',
      'download_label' => array(
        '#title' => t('Download label'),
        '#type' => 'textfield',
        '#default_value' => $default_label,
      ),
      'download_fields' => array(
        '#title' => t('Download Fields'),
        '#type' => 'checkboxes',
        '#options' => $options,
        '#default_value' => $default_value,
      ),
    );
    return $element;
  }

  /**
   * {@inheritdoc}
   */
  public function massageFormValues(array $values, array $form, FormStateInterface $form_state) {

    // Serialize download fields
    foreach ($values as $delta => $fields) {
      $values[$delta]['download_fields'] = serialize($fields['download_fields']);
    }
    return $values;
  }

}

Classes

Name	Description
DownloadLinkWidget	Plugin annotation @FieldWidget( id = "download_link_widget", label = @Translation("Field selector"), field_types = {"download_link"} )