--- /dev/null
+<?php
+
+namespace Drupal\Core\Menu;
+
+use Drupal\Component\Plugin\PluginBase;
+use Drupal\Core\Cache\Cache;
+use Drupal\Core\Cache\CacheableDependencyInterface;
+use Drupal\Core\DependencyInjection\DependencySerializationTrait;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\Core\Routing\RouteProviderInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Provides a default implementation for local action plugins.
+ */
+class LocalActionDefault extends PluginBase implements LocalActionInterface, ContainerFactoryPluginInterface, CacheableDependencyInterface {
+
+ use DependencySerializationTrait;
+
+ /**
+ * The route provider to load routes by name.
+ *
+ * @var \Drupal\Core\Routing\RouteProviderInterface
+ */
+ protected $routeProvider;
+
+ /**
+ * Constructs a LocalActionDefault object.
+ *
+ * @param array $configuration
+ * A configuration array containing information about the plugin instance.
+ * @param string $plugin_id
+ * The plugin_id for the plugin instance.
+ * @param mixed $plugin_definition
+ * The plugin implementation definition.
+ * @param \Drupal\Core\Routing\RouteProviderInterface $route_provider
+ * The route provider to load routes by name.
+ */
+ public function __construct(array $configuration, $plugin_id, $plugin_definition, RouteProviderInterface $route_provider) {
+ parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+ $this->routeProvider = $route_provider;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+ return new static(
+ $configuration,
+ $plugin_id,
+ $plugin_definition,
+ $container->get('router.route_provider')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getRouteName() {
+ return $this->pluginDefinition['route_name'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getTitle(Request $request = NULL) {
+ // Subclasses may pull in the request or specific attributes as parameters.
+ // The title from YAML file discovery may be a TranslatableMarkup object.
+ return (string) $this->pluginDefinition['title'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getWeight() {
+ return $this->pluginDefinition['weight'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getRouteParameters(RouteMatchInterface $route_match) {
+ $parameters = isset($this->pluginDefinition['route_parameters']) ? $this->pluginDefinition['route_parameters'] : [];
+ $route = $this->routeProvider->getRouteByName($this->getRouteName());
+ $variables = $route->compile()->getVariables();
+
+ // Normally the \Drupal\Core\ParamConverter\ParamConverterManager has
+ // processed the Request attributes, and in that case the _raw_variables
+ // attribute holds the original path strings keyed to the corresponding
+ // slugs in the path patterns. For example, if the route's path pattern is
+ // /filter/tips/{filter_format} and the path is /filter/tips/plain_text then
+ // $raw_variables->get('filter_format') == 'plain_text'.
+ $raw_variables = $route_match->getRawParameters();
+
+ foreach ($variables as $name) {
+ if (isset($parameters[$name])) {
+ continue;
+ }
+
+ if ($raw_variables && $raw_variables->has($name)) {
+ $parameters[$name] = $raw_variables->get($name);
+ }
+ elseif ($value = $route_match->getRawParameter($name)) {
+ $parameters[$name] = $value;
+ }
+ }
+ // The UrlGenerator will throw an exception if expected parameters are
+ // missing. This method should be overridden if that is possible.
+ return $parameters;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getOptions(RouteMatchInterface $route_match) {
+ return (array) $this->pluginDefinition['options'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getCacheTags() {
+ if (!isset($this->pluginDefinition['cache_tags'])) {
+ return [];
+ }
+ return $this->pluginDefinition['cache_tags'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getCacheContexts() {
+ if (!isset($this->pluginDefinition['cache_contexts'])) {
+ return [];
+ }
+ return $this->pluginDefinition['cache_contexts'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getCacheMaxAge() {
+ if (!isset($this->pluginDefinition['cache_max_age'])) {
+ return Cache::PERMANENT;
+ }
+ return $this->pluginDefinition['cache_max_age'];
+ }
+
+}