public static function FarmMap::preRenderMap in farmOS 2.x

Pre-render callback for the map render array.

Parameters

array $element: A renderable array containing a #map_type property, which will be appended to 'farm-map-' as the map element ID if one has not already been provided.

Return value

array A renderable array representing the map.

File

modules/core/map/src/Element/FarmMap.php, line 41

Class

FarmMap

Provides a farm_map render element.

Namespace

Drupal\farm_map\Element

Code

public static function preRenderMap(array $element) {
  if (empty($element['#attributes']['id'])) {

    // Set the id to the map name.
    $map_id = Html::getUniqueId('farm-map-' . $element['#map_type']);
    $element['#attributes']['id'] = $map_id;
  }
  else {
    $map_id = $element['#attributes']['id'];
  }

  // Get the map type.

  /** @var \Drupal\farm_map\Entity\MapTypeInterface $map */
  $map = \Drupal::entityTypeManager()
    ->getStorage('map_type')
    ->load($element['#map_type']);

  // Add the farm-map class.
  $element['#attributes']['class'][] = 'farm-map';

  // By default, inform farm_map.js that it should instantiate the map.
  if (empty($element['#attributes']['data-map-instantiator'])) {
    $element['#attributes']['data-map-instantiator'] = 'farm_map';
  }

  // Attach the farmOS-map and farm_map libraries.
  $element['#attached']['library'][] = 'farm_map/farmOS-map';
  $element['#attached']['library'][] = 'farm_map/farm_map';

  // Include map settings.
  $map_settings = !empty($element['#map_settings']) ? $element['#map_settings'] : [];

  // Include the map options.
  $map_options = $map
    ->getMapOptions();

  // Add the instance settings under the map id key.
  $instance_settings = array_merge_recursive($map_settings, $map_options);
  $element['#attached']['drupalSettings']['farm_map'][$map_id] = $instance_settings;

  // Create and dispatch a MapRenderEvent.
  $event = new MapRenderEvent($map, $element);
  \Drupal::service('event_dispatcher')
    ->dispatch(MapRenderEvent::EVENT_NAME, $event);

  // Return the element.
  return $event->element;
}