DynamicLocalTasks.php

<?php

namespace Drupal\entity_clone\Plugin\Derivative;

use Drupal\Component\Plugin\Derivative\DeriverBase;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Plugin\Discovery\ContainerDeriverInterface;
use Drupal\Core\StringTranslation\TranslationManager;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Defines dynamic local tasks.
 */
class DynamicLocalTasks extends DeriverBase implements ContainerDeriverInterface {
    
    /**
     * The entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface
     */
    protected $entityTypeManager;
    
    /**
     * The translation manager.
     *
     * @var \Drupal\Core\StringTranslation\TranslationManager
     */
    protected $translationManager;
    
    /**
     * Constructs a new DynamicLocalTasks.
     *
     * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
     *   The entity type manager.
     * @param \Drupal\Core\StringTranslation\TranslationManager $string_translation
     *   The translation manager.
     */
    public function __construct(EntityTypeManagerInterface $entity_type_manager, TranslationManager $string_translation) {
        $this->entityTypeManager = $entity_type_manager;
        $this->translationManager = $string_translation;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, $base_plugin_id) {
        return new static($container->get('entity_type.manager'), $container->get('string_translation'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function getDerivativeDefinitions($base_plugin_definition) {
        $this->derivatives = [];
        
        /** @var \Drupal\Core\Entity\EntityTypeInterface $entity_type */
        foreach ($this->entityTypeManager
            ->getDefinitions() as $entity_type_id => $entity_type) {
            $has_clone_path = $entity_type->hasLinkTemplate('clone-form');
            $has_canonical_path = $entity_type->hasLinkTemplate('canonical');
            if ($has_clone_path) {
                $this->derivatives["{$entity_type_id}.clone_tab"] = [
                    'route_name' => "entity.{$entity_type_id}.clone_form",
                    'title' => $this->translationManager
                        ->translate('Clone'),
                    'base_route' => "entity.{$entity_type_id}." . ($has_canonical_path ? "canonical" : "edit_form"),
                    'weight' => 100,
                ];
            }
        }
        return $this->derivatives;
    }

}