geolocation-8.x-3.x-dev/modules/geolocation_google_maps/src/Plugin/geolocation/MapFeature/GoogleMapTypeStyle.php

<?php

namespace Drupal\geolocation_google_maps\Plugin\geolocation\MapFeature;

use Drupal\geolocation\Attribute\MapFeature;
use Drupal\Core\Form\FormStateInterface;
use Drupal\geolocation\MapFeatureBase;
use Drupal\geolocation\MapProviderInterface;

/**
 * Provides map styling support.
 */
#[MapFeature(
  id: 'map_type_style',
  name: new \Drupal\Core\StringTranslation\TranslatableMarkup('Map Type Style'),
  description: new \Drupal\Core\StringTranslation\TranslatableMarkup('Add map styling JSON.'),
  type: 'google_maps'
)]
class GoogleMapTypeStyle extends MapFeatureBase {

  /**
   * {@inheritdoc}
   */
  public static function getDefaultSettings(): array {
    return [
      'style' => '[]',
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function getSettingsForm(array $settings, array $parents = [], ?MapProviderInterface $mapProvider = NULL): array {
    $form = parent::getSettingsForm($settings, $parents, $mapProvider);

    $form['style'] = [
      '#title' => $this->t('JSON styles'),
      '#type' => 'textarea',
      '#default_value' => $settings['style'],
      '#description' => $this->t('A JSON encoded styles array to customize the presentation of the Google Map. See the <a href=":styling">Styled Map</a> section of the Google Maps website for further information.', [
        ':styling' => 'https://developers.google.com/maps/documentation/javascript/styling',
      ]),
    ];

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function validateSettingsForm(array $values, FormStateInterface $form_state, array $parents = []): void {
    $json_style = $values['style'];
    if (!empty($json_style)) {
      $style_parents = $parents;
      $style_parents[] = 'styles';
      if (!is_string($json_style)) {
        $form_state->setErrorByName(implode('][', $style_parents), $this->t('Please enter a JSON string as style.'));
      }
      $json_result = json_decode($json_style);
      if ($json_result === NULL) {
        $form_state->setErrorByName(implode('][', $style_parents), $this->t('Decoding style JSON failed. Error: %error.', ['%error' => json_last_error()]));
      }
      elseif (!is_array($json_result)) {
        $form_state->setErrorByName(implode('][', $style_parents), $this->t('Decoded style JSON is not an array.'));
      }
    }
  }

  /**
   * {@inheritdoc}
   */
  public function alterMap(array $render_array, array $feature_settings = [], array $context = [], ?MapProviderInterface $mapProvider = NULL): array {
    if (!is_string($feature_settings['style'])) {
      return $render_array;
    }

    if (!$feature_settings['style']) {
      return $render_array;
    }

    $feature_settings['style'] = str_replace(["\n\r", "\n", "\r", " "], '', $feature_settings['style']);

    if (!json_decode($feature_settings['style'])) {
      return $render_array;
    }

    return parent::alterMap($render_array, $feature_settings, $context, $mapProvider);
  }

}