PlaceBlockDeriver.php

<?php

declare (strict_types=1);
namespace Drupal\block\Plugin\ConfigAction;

use Drupal\Component\Plugin\Derivative\DeriverBase;

/**
 * Defines a deriver for the `placeBlock` config action.
 *
 * This creates two actions: `placeBlockInDefaultTheme`, and
 * `placeBlockInAdminTheme`. They behave identically except for which theme
 * they target.
 */
final class PlaceBlockDeriver extends DeriverBase {
    
    /**
     * {@inheritdoc}
     */
    public function getDerivativeDefinitions($base_plugin_definition) {
        $this->derivatives['placeBlockInAdminTheme'] = [
            'which_theme' => 'admin',
        ] + $base_plugin_definition;
        $this->derivatives['placeBlockInDefaultTheme'] = [
            'which_theme' => 'default',
        ] + $base_plugin_definition;
        return parent::getDerivativeDefinitions($base_plugin_definition);
    }

}