diff core/modules/block/src/Plugin/Derivative/ThemeLocalTask.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/block/src/Plugin/Derivative/ThemeLocalTask.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,66 @@
+<?php
+
+namespace Drupal\block\Plugin\Derivative;
+
+use Drupal\Component\Plugin\Derivative\DeriverBase;
+use Drupal\Core\Extension\ThemeHandlerInterface;
+use Drupal\Core\Plugin\Discovery\ContainerDeriverInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides dynamic tabs based on active themes.
+ */
+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;
+  }
+
+}