public function Tile::optionsForm in Openlayers 7.3

@TODO What is this return? If it is the form, why is form by reference?

Overrides Base::optionsForm

File

src/Plugin/Layer/Tile/Tile.php, line 22

Layer: Tile.

Class

Tile

Class Tile.

Namespace

Drupal\openlayers\Plugin\Layer\Tile

Code

public function optionsForm(array &$form, array &$form_state) {
  $form['options']['opacity'] = array(
    '#type' => 'textfield',
    '#title' => t('Opacity'),
    '#default_value' => $this
      ->getOption('opacity', 1),
    '#description' => t('Opacity, between 0 and 1.'),
  );
}