<?php

namespace Drupal\image_module_test\Plugin\Field\FieldType;

use Drupal\Core\Field\Attribute\FieldType;
use Drupal\Core\Field\FieldItemBase;
use Drupal\Core\Field\FieldStorageDefinitionInterface;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\Core\TypedData\DataDefinition;

/**
 * Defines a dummy field containing an AJAX handler.
 */
#[FieldType(
  id: "image_module_test_dummy_ajax",
  label: new TranslatableMarkup("Dummy AJAX"),
  description: new TranslatableMarkup("A field containing an AJAX handler."),
  default_widget: "image_module_test_dummy_ajax_widget",
  default_formatter: "image_module_test_dummy_ajax_formatter"
)]
class DummyAjaxItem extends FieldItemBase {

  /**
   * {@inheritdoc}
   */
  public static function schema(FieldStorageDefinitionInterface $field_definition) {
    return [
      'columns' => [
        'value' => [
          'type' => 'varchar',
          'length' => 255,
        ],
      ],
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function isEmpty() {
    return empty($this->get('value')->getValue());
  }

  /**
   * {@inheritdoc}
   */
  public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
    $properties['value'] = DataDefinition::create('string')
      ->setLabel(new TranslatableMarkup('Dummy string value'));

    return $properties;
  }

}
