Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\block\Plugin\Derivative;
Chris@0: 
Chris@0: use Drupal\Component\Plugin\Derivative\DeriverBase;
Chris@0: use Drupal\Core\Extension\ThemeHandlerInterface;
Chris@0: use Drupal\Core\Plugin\Discovery\ContainerDeriverInterface;
Chris@0: use Symfony\Component\DependencyInjection\ContainerInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Provides dynamic tabs based on active themes.
Chris@0:  */
Chris@0: class ThemeLocalTask extends DeriverBase implements ContainerDeriverInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The theme handler.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Extension\ThemeHandlerInterface
Chris@0:    */
Chris@0:   protected $themeHandler;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new ThemeLocalTask.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
Chris@0:    *   The theme handler.
Chris@0:    */
Chris@0:   public function __construct(ThemeHandlerInterface $theme_handler) {
Chris@0:     $this->themeHandler = $theme_handler;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function create(ContainerInterface $container, $base_plugin_id) {
Chris@0:     return new static(
Chris@0:       $container->get('theme_handler')
Chris@0:     );
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getDerivativeDefinitions($base_plugin_definition) {
Chris@0:     $default_theme = $this->themeHandler->getDefault();
Chris@0: 
Chris@0:     foreach ($this->themeHandler->listInfo() as $theme_name => $theme) {
Chris@0:       if ($this->themeHandler->hasUi($theme_name)) {
Chris@0:         $this->derivatives[$theme_name] = $base_plugin_definition;
Chris@0:         $this->derivatives[$theme_name]['title'] = $theme->info['name'];
Chris@0:         $this->derivatives[$theme_name]['route_parameters'] = ['theme' => $theme_name];
Chris@0:       }
Chris@0:       // Default task!
Chris@0:       if ($default_theme == $theme_name) {
Chris@0:         $this->derivatives[$theme_name]['route_name'] = $base_plugin_definition['parent_id'];
Chris@0:         // Emulate default logic because without the base plugin id we can't
Chris@0:         // change the base_route.
Chris@0:         $this->derivatives[$theme_name]['weight'] = -10;
Chris@0: 
Chris@0:         unset($this->derivatives[$theme_name]['route_parameters']);
Chris@0:       }
Chris@0:     }
Chris@0:     return $this->derivatives;
Chris@0:   }
Chris@0: 
Chris@0: }