--- /dev/null
+<?php
+
+namespace Drupal\settings_tray\RouteProcessor;
+
+use Drupal\Core\Render\BubbleableMetadata;
+use Drupal\Core\RouteProcessor\OutboundRouteProcessorInterface;
+use Drupal\Core\Routing\RouteProviderInterface;
+use Symfony\Component\Routing\Route;
+
+/**
+ * Processes the Block entity off-canvas form BC route.
+ *
+ * @internal
+ */
+class BlockEntityOffCanvasFormRouteProcessorBC implements OutboundRouteProcessorInterface {
+
+ /**
+ * The route provider.
+ *
+ * @var \Drupal\Core\Routing\RouteProviderInterface
+ */
+ protected $routeProvider;
+
+ /**
+ * Constructs a BlockEntityOffCanvasFormRouteProcessorBC object.
+ *
+ * @param \Drupal\Core\Routing\RouteProviderInterface $route_provider
+ * The route provider.
+ */
+ public function __construct(RouteProviderInterface $route_provider) {
+ $this->routeProvider = $route_provider;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function processOutbound($route_name, Route $route, array &$parameters, BubbleableMetadata $bubbleable_metadata = NULL) {
+ if ($route_name === 'entity.block.off_canvas_form') {
+ $redirected_route_name = 'entity.block.settings_tray_form';
+ @trigger_error(sprintf("The '%s' route is deprecated since version 8.5.x and will be removed in 9.0.0. Use the '%s' route instead.", $route_name, $redirected_route_name), E_USER_DEPRECATED);
+ static::overwriteRoute($route, $this->routeProvider->getRouteByName($redirected_route_name));
+ }
+ }
+
+ /**
+ * Overwrites one route's metadata with the other's.
+ *
+ * @param \Symfony\Component\Routing\Route $target_route
+ * The route whose metadata to overwrite.
+ * @param \Symfony\Component\Routing\Route $source_route
+ * The route whose metadata to read from.
+ *
+ * @see \Symfony\Component\Routing\Route
+ */
+ protected static function overwriteRoute(Route $target_route, Route $source_route) {
+ $target_route->setPath($source_route->getPath());
+ $target_route->setDefaults($source_route->getDefaults());
+ $target_route->setRequirements($source_route->getRequirements());
+ $target_route->setOptions($source_route->getOptions());
+ $target_route->setHost($source_route->getHost());
+ $target_route->setSchemes($source_route->getSchemes());
+ $target_route->setMethods($source_route->getMethods());
+ }
+
+}