class ThemeLocalTask in Drupal 8

Provides dynamic tabs based on active themes.

Hierarchy

• class \Drupal\Component\Plugin\Derivative\DeriverBase implements DeriverInterface
  • class \Drupal\block\Plugin\Derivative\ThemeLocalTask implements ContainerDeriverInterface

1 string reference to 'ThemeLocalTask'

block.links.task.yml in core/modules/block/block.links.task.yml

core/modules/block/block.links.task.yml

File

core/modules/block/src/Plugin/Derivative/ThemeLocalTask.php, line 13

Namespace

Drupal\block\Plugin\Derivative

class ThemeLocalTask extends DeriverBase implements ContainerDeriverInterface {

  /**
   * The theme handler.
   *
   * @var \Drupal\Core\Extension\ThemeHandlerInterface
   */
  protected $themeHandler;

  /**
   * Constructs a new ThemeLocalTask.
   *
   * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
   *   The theme handler.
   */
  public function __construct(ThemeHandlerInterface $theme_handler) {
    $this->themeHandler = $theme_handler;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, $base_plugin_id) {
    return new static($container
      ->get('theme_handler'));
  }

  /**
   * {@inheritdoc}
   */
  public function getDerivativeDefinitions($base_plugin_definition) {
    $default_theme = $this->themeHandler
      ->getDefault();
    foreach ($this->themeHandler
      ->listInfo() as $theme_name => $theme) {
      if ($this->themeHandler
        ->hasUi($theme_name)) {
        $this->derivatives[$theme_name] = $base_plugin_definition;
        $this->derivatives[$theme_name]['title'] = $theme->info['name'];
        $this->derivatives[$theme_name]['route_parameters'] = [
          'theme' => $theme_name,
        ];
      }

      // Default task!
      if ($default_theme == $theme_name) {
        $this->derivatives[$theme_name]['route_name'] = $base_plugin_definition['parent_id'];

        // Emulate default logic because without the base plugin id we can't
        // change the base_route.
        $this->derivatives[$theme_name]['weight'] = -10;
        unset($this->derivatives[$theme_name]['route_parameters']);
      }
    }
    return $this->derivatives;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DeriverBase::$derivatives	protected	property	List of derivative definitions.	1
DeriverBase::getDerivativeDefinition	public	function	Gets the definition of a derivative plugin. Overrides DeriverInterface::getDerivativeDefinition
ThemeLocalTask::$themeHandler	protected	property	The theme handler.
ThemeLocalTask::create	public static	function	Creates a new class instance. Overrides ContainerDeriverInterface::create
ThemeLocalTask::getDerivativeDefinitions	public	function	Gets the definition of all derivatives of a base plugin. Overrides DeriverBase::getDerivativeDefinitions
ThemeLocalTask::__construct	public	function	Constructs a new ThemeLocalTask.