geolocation-8.x-3.x-dev/src/Plugin/Field/FieldWidget/GeolocationLatlngWidget.php

<?php

namespace Drupal\geolocation\Plugin\Field\FieldWidget;

use Drupal\Core\Field\Attribute\FieldWidget;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\WidgetBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\geolocation\Plugin\Field\FieldType\GeolocationItem;

/**
 * Plugin implementation of the 'geolocation_latlng' widget.
 */
#[FieldWidget(
  id: 'geolocation_latlng',
  label: new \Drupal\Core\StringTranslation\TranslatableMarkup('Geolocation Lat/Lng'),
  field_types: ['geolocation']
)]
class GeolocationLatlngWidget extends WidgetBase {

  /**
   * {@inheritdoc}
   */
  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {

    $element['#type'] = 'fieldset';

    $element['lat'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Latitude'),
      '#default_value' => (isset($items[$delta]->lat)) ? $items[$delta]->lat : NULL,
      '#empty_value' => '',
      '#maxlength' => 255,
      '#required' => $this->fieldDefinition->isRequired(),
    ];

    $lat_example = $element['lat']['#default_value'] ?: '51.47879';

    $element['lat']['#description'] = $this->t('Enter either in decimal %decimal or sexagesimal format %sexagesimal', [
      '%decimal' => $lat_example,
      '%sexagesimal' => GeolocationItem::decimalToSexagesimal($lat_example),
    ]);

    $element['lng'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Longitude'),
      '#empty_value' => '',
      '#default_value' => (isset($items[$delta]->lng)) ? $items[$delta]->lng : NULL,
      '#maxlength' => 255,
      '#required' => $this->fieldDefinition->isRequired(),
    ];

    $lng_example = $element['lng']['#default_value'] ?: '-0.010677';

    $element['lng']['#description'] = $this->t('Enter either in decimal %decimal or sexagesimal format %sexagesimal', [
      '%decimal' => $lng_example,
      '%sexagesimal' => GeolocationItem::decimalToSexagesimal($lng_example),
    ]);

    return $element;
  }

  /**
   * {@inheritdoc}
   */
  public function massageFormValues(array $values, array $form, FormStateInterface $form_state) {
    // Grep GPS values and transform to regular float.
    foreach ($values as $index => $geolocation) {
      if (
        !empty($geolocation['lat'])
        && !empty($geolocation['lng'])
      ) {
        $latitude = GeolocationItem::sexagesimalToDecimal($geolocation['lat']);
        $longitude = GeolocationItem::sexagesimalToDecimal($geolocation['lng']);

        if (!empty($latitude) && !empty($longitude)) {
          $values[$index]['lat'] = $latitude;
          $values[$index]['lng'] = $longitude;
        }
      }
    }
    return parent::massageFormValues($values, $form, $form_state);
  }

}