ExifHtmlWidget.php

<?php

namespace Drupal\exif\Plugin\Field\FieldWidget;

use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Form\FormStateInterface;

/**
 * Plugin implementation of the 'exif_html' widget.
 *
 * @FieldWidget(
 *   id = "exif_html",
 *   label = @Translation("metadata from image as html table"),
 *   description = @Translation("field content is calculated from image field
 *   in the same content type (field are hidden from forms)"), multiple_values
 *   = true, field_types = {
 *     "text",
 *     "text_long",
 *   }
 * )
 */
class ExifHtmlWidget extends ExifWidgetBase {
    const EXIF_HTML_DEFAULT_SETTINGS = [
        'exif_field_separator' => '',
        'exif_field' => 'all_all',
    ];
    
    /**
     * {@inheritdoc}
     */
    public static function defaultSettings() {
        return ExifHtmlWidget::EXIF_HTML_DEFAULT_SETTINGS + parent::defaultSettings();
    }
    
    /**
     * {@inheritdoc}
     */
    public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
        $element += [
            '#type' => '',
            '#value' => '',
        ];
        return $element;
    }

}