ChartConfigItemDefaultFormatter.php in Charts 8.4

Namespace

Drupal\charts\Plugin\Field\FieldFormatter

File

src/Plugin/Field/FieldFormatter/ChartConfigItemDefaultFormatter.php

<?php

namespace Drupal\charts\Plugin\Field\FieldFormatter;

use Drupal\charts\Element\Chart;
use Drupal\Component\Utility\Html;
use Drupal\Core\Field\FieldItemInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\FormatterBase;

/**
 * Plugin implementation of the "chart_config_default" formatter.
 *
 * @FieldFormatter(
 *   id = "chart_config_default",
 *   label = @Translation("Default"),
 *   field_types = {
 *     "chart_config",
 *   },
 * )
 */
class ChartConfigItemDefaultFormatter extends FormatterBase {

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $elements = [];
    $entity = $items
      ->getEntity();
    $entity_uuid = $entity
      ->uuid();
    $entity_type_id = $entity
      ->getEntityTypeId();
    $bundle = $entity
      ->bundle();
    $chart_id = $entity_type_id . '__' . $bundle;
    foreach ($items as $delta => $item) {
      $id = 'charts-item--' . $entity_uuid . '--' . $delta;
      $elements[$delta] = $this
        ->viewElement($item, $chart_id);
      $elements[$delta]['#id'] = Html::getUniqueId($id);
      $elements[$delta]['#chart_id'] = $chart_id;
    }
    return $elements;
  }

  /**
   * Builds a renderable array for a single chart item.
   *
   * @param \Drupal\Core\Field\FieldItemInterface $item
   *   The chart field item.
   * @param string $chart_id
   *   The chart id.
   *
   * @return array
   *   A renderable array.
   *
   * @throws \Drupal\Core\TypedData\Exception\MissingDataException
   */
  protected function viewElement(FieldItemInterface $item, $chart_id) {
    $settings = $item
      ->toArray()['config'];
    return Chart::buildElement($settings, $chart_id);
  }

}

Classes

Name	Description
ChartConfigItemDefaultFormatter	Plugin implementation of the "chart_config_default" formatter.