FirstRow.php in Geolocation Field 8.2

Namespace

Drupal\geolocation\Plugin\geolocation\Location

File

src/Plugin/geolocation/Location/FirstRow.php

<?php

namespace Drupal\geolocation\Plugin\geolocation\Location;

use Drupal\geolocation\LocationInterface;
use Drupal\geolocation\LocationBase;
use Drupal\geolocation\ViewsContextTrait;

/**
 * Derive center from first row.
 *
 * @Location(
 *   id = "first_row",
 *   name = @Translation("View first row"),
 *   description = @Translation("Use geolocation field value from first row."),
 * )
 */
class FirstRow extends LocationBase implements LocationInterface {
  use ViewsContextTrait;

  /**
   * {@inheritdoc}
   */
  public function getAvailableLocationOptions($context) {
    $options = [];
    if ($displayHandler = self::getViewsDisplayHandler($context)) {
      if ($displayHandler
        ->getPlugin('style')
        ->getPluginId() == 'maps_common') {
        $options['first_row'] = t('First row');
      }
    }
    return $options;
  }

  /**
   * {@inheritdoc}
   */
  public function getCoordinates($location_option_id, array $location_option_settings, $context = NULL) {
    if (!($displayHandler = self::getViewsDisplayHandler($context))) {
      return parent::getCoordinates($location_option_id, $location_option_settings, $context);
    }
    $views_style = $displayHandler
      ->getPlugin('style');
    if (empty($views_style->options['geolocation_field'])) {
      return parent::getCoordinates($location_option_id, $location_option_settings, $context);
    }

    /** @var \Drupal\geolocation\Plugin\views\field\GeolocationField $geolocation_field */
    $geolocation_field = $views_style->view->field[$views_style->options['geolocation_field']];
    if (empty($geolocation_field)) {
      return parent::getCoordinates($location_option_id, $location_option_settings, $context);
    }
    if (empty($views_style->view->result[0])) {
      return parent::getCoordinates($location_option_id, $location_option_settings, $context);
    }
    $entity = $geolocation_field
      ->getEntity($views_style->view->result[0]);
    if (empty($entity)) {
      return parent::getCoordinates($location_option_id, $location_option_settings, $context);
    }
    if (isset($entity->{$geolocation_field->definition['field_name']})) {

      /** @var \Drupal\geolocation\Plugin\Field\FieldType\GeolocationItem $item */
      $item = $entity->{$geolocation_field->definition['field_name']}
        ->first();
      return [
        'lat' => $item
          ->get('lat')
          ->getValue(),
        'lng' => $item
          ->get('lng')
          ->getValue(),
      ];
    }
    return parent::getCoordinates($location_option_id, $location_option_settings, $context);
  }

}

Classes

Name	Description
FirstRow	Derive center from first row.