--- /dev/null
+<?php
+
+namespace Drupal\language\Plugin\LanguageNegotiation;
+
+use Drupal\Core\Entity\ContentEntityInterface;
+use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\Core\PathProcessor\OutboundPathProcessorInterface;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Render\BubbleableMetadata;
+use Drupal\Core\Url;
+use Drupal\language\LanguageNegotiationMethodBase;
+use Drupal\language\LanguageSwitcherInterface;
+use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Route;
+
+/**
+ * Class for identifying the content translation language.
+ *
+ * @LanguageNegotiation(
+ * id = Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationContentEntity::METHOD_ID,
+ * types = {Drupal\Core\Language\LanguageInterface::TYPE_CONTENT},
+ * weight = -9,
+ * name = @Translation("Content language"),
+ * description = @Translation("Determines the content language from a request parameter."),
+ * )
+ */
+class LanguageNegotiationContentEntity extends LanguageNegotiationMethodBase implements OutboundPathProcessorInterface, LanguageSwitcherInterface, ContainerFactoryPluginInterface {
+
+ /**
+ * The language negotiation method ID.
+ */
+ const METHOD_ID = 'language-content-entity';
+
+ /**
+ * The query string parameter.
+ */
+ const QUERY_PARAMETER = 'language_content_entity';
+
+ /**
+ * A list of all the link paths of enabled content entities.
+ *
+ * @var array
+ */
+ protected $contentEntityPaths;
+
+ /**
+ * Static cache for the language negotiation order check.
+ *
+ * @see \Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationContentEntity::hasLowerLanguageNegotiationWeight()
+ *
+ * @var bool
+ */
+ protected $hasLowerLanguageNegotiationWeightResult;
+
+ /**
+ * Static cache of outbound route paths per request.
+ *
+ * @var \SplObjectStorage
+ */
+ protected $paths;
+
+ /**
+ * The entity manager.
+ *
+ * @var \Drupal\Core\Entity\EntityManagerInterface
+ */
+ protected $entityManager;
+
+ /**
+ * Constructs a new LanguageNegotiationContentEntity instance.
+ *
+ * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
+ * The entity manager.
+ */
+ public function __construct(EntityManagerInterface $entity_manager) {
+ $this->entityManager = $entity_manager;
+ $this->paths = new \SplObjectStorage();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+ return new static($container->get('entity.manager'));
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getLangcode(Request $request = NULL) {
+ $langcode = $request->query->get(static::QUERY_PARAMETER);
+
+ $language_enabled = array_key_exists($langcode, $this->languageManager->getLanguages());
+ return $language_enabled ? $langcode : NULL;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function processOutbound($path, &$options = [], Request $request = NULL, BubbleableMetadata $bubbleable_metadata = NULL) {
+ // If appropriate, process outbound to add a query parameter to the url and
+ // remove the language option, so that url negotiator does not rewrite the
+ // url.
+
+ // First, check if processing conditions are met.
+ if (!($request && !empty($options['route']) && $this->hasLowerLanguageNegotiationWeight() && $this->meetsContentEntityRoutesCondition($options['route'], $request))) {
+ return $path;
+ }
+
+ if (isset($options['language']) || $langcode = $this->getLangcode($request)) {
+ // If the language option is set, unset it, so that the url language
+ // negotiator does not rewrite the url.
+ if (isset($options['language'])) {
+ $langcode = $options['language']->getId();
+ unset($options['language']);
+ }
+
+ if (!isset($options['query'][static::QUERY_PARAMETER])) {
+ $options['query'][static::QUERY_PARAMETER] = $langcode;
+ }
+
+ if ($bubbleable_metadata) {
+ // Cached URLs that have been processed by this outbound path
+ // processor must be:
+ $bubbleable_metadata
+ // - varied by the content language query parameter.
+ ->addCacheContexts(['url.query_args:' . static::QUERY_PARAMETER]);
+ }
+ }
+
+ return $path;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getLanguageSwitchLinks(Request $request, $type, Url $url) {
+ $links = [];
+ $query = [];
+ parse_str($request->getQueryString(), $query);
+
+ foreach ($this->languageManager->getNativeLanguages() as $language) {
+ $langcode = $language->getId();
+ $query[static::QUERY_PARAMETER] = $langcode;
+ $links[$langcode] = [
+ 'url' => $url,
+ 'title' => $language->getName(),
+ 'attributes' => ['class' => ['language-link']],
+ 'query' => $query,
+ ];
+ }
+
+ return $links;
+ }
+
+ /**
+ * Determines if content entity language negotiator has higher priority.
+ *
+ * The content entity language negotiator having higher priority than the url
+ * language negotiator, is a criteria in
+ * \Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationContentEntity::processOutbound().
+ *
+ * @return bool
+ * TRUE if the the content entity language negotiator has higher priority
+ * than the url language negotiator, FALSE otherwise.
+ */
+ protected function hasLowerLanguageNegotiationWeight() {
+ if (!isset($this->hasLowerLanguageNegotiationWeightResult)) {
+ // Only run if the LanguageNegotiationContentEntity outbound function is
+ // being executed before the outbound function of LanguageNegotiationUrl.
+ $content_method_weights = $this->config->get('language.types')->get('negotiation.language_content.enabled') ?: [];
+
+ // Check if the content language is configured to be dependent on the
+ // url negotiator directly or indirectly over the interface negotiator.
+ if (isset($content_method_weights[LanguageNegotiationUrl::METHOD_ID]) && ($content_method_weights[static::METHOD_ID] > $content_method_weights[LanguageNegotiationUrl::METHOD_ID])) {
+ $this->hasLowerLanguageNegotiationWeightResult = FALSE;
+ }
+ else {
+ $check_interface_method = FALSE;
+ if (isset($content_method_weights[LanguageNegotiationUI::METHOD_ID])) {
+ $interface_method_weights = $this->config->get('language.types')->get('negotiation.language_interface.enabled') ?: [];
+ $check_interface_method = isset($interface_method_weights[LanguageNegotiationUrl::METHOD_ID]);
+ }
+ if ($check_interface_method) {
+ $max_weight = $content_method_weights[LanguageNegotiationUI::METHOD_ID];
+ $max_weight = isset($content_method_weights[LanguageNegotiationUrl::METHOD_ID]) ? max($max_weight, $content_method_weights[LanguageNegotiationUrl::METHOD_ID]) : $max_weight;
+ }
+ else {
+ $max_weight = isset($content_method_weights[LanguageNegotiationUrl::METHOD_ID]) ? $content_method_weights[LanguageNegotiationUrl::METHOD_ID] : PHP_INT_MAX;
+ }
+
+ $this->hasLowerLanguageNegotiationWeightResult = $content_method_weights[static::METHOD_ID] < $max_weight;
+ }
+ }
+
+ return $this->hasLowerLanguageNegotiationWeightResult;
+ }
+
+ /**
+ * Determines if content entity route condition is met.
+ *
+ * Requirements: currently being on an content entity route and processing
+ * outbound url pointing to the same content entity.
+ *
+ * @param \Symfony\Component\Routing\Route $outbound_route
+ * The route object for the current outbound url being processed.
+ * @param \Symfony\Component\HttpFoundation\Request $request
+ * The HttpRequest object representing the current request.
+ *
+ * @return bool
+ * TRUE if the content entity route condition is met, FALSE otherwise.
+ */
+ protected function meetsContentEntityRoutesCondition(Route $outbound_route, Request $request) {
+ $outbound_path_pattern = $outbound_route->getPath();
+ $storage = isset($this->paths[$request]) ? $this->paths[$request] : [];
+ if (!isset($storage[$outbound_path_pattern])) {
+ $storage[$outbound_path_pattern] = FALSE;
+
+ // Check if the outbound route points to the current entity.
+ if ($content_entity_type_id_for_current_route = $this->getContentEntityTypeIdForCurrentRequest($request)) {
+ if (!empty($this->getContentEntityPaths()[$outbound_path_pattern]) && $content_entity_type_id_for_current_route == $this->getContentEntityPaths()[$outbound_path_pattern]) {
+ $storage[$outbound_path_pattern] = TRUE;
+ }
+ }
+
+ $this->paths[$request] = $storage;
+ }
+
+ return $storage[$outbound_path_pattern];
+ }
+
+ /**
+ * Returns the content entity type ID from the current request for the route.
+ *
+ * @param \Symfony\Component\HttpFoundation\Request $request
+ * The HttpRequest object representing the current request.
+ *
+ * @return string
+ * The entity type ID for the route from the request.
+ */
+ protected function getContentEntityTypeIdForCurrentRequest(Request $request) {
+ $content_entity_type_id_for_current_route = '';
+
+ if ($current_route = $request->attributes->get(RouteObjectInterface::ROUTE_OBJECT)) {
+ $current_route_path = $current_route->getPath();
+ $content_entity_type_id_for_current_route = isset($this->getContentEntityPaths()[$current_route_path]) ? $this->getContentEntityPaths()[$current_route_path] : '';
+ }
+
+ return $content_entity_type_id_for_current_route;
+ }
+
+ /**
+ * Returns the paths for the link templates of all content entities.
+ *
+ * @return array
+ * An array of all content entity type IDs, keyed by the corresponding link
+ * template paths.
+ */
+ protected function getContentEntityPaths() {
+ if (!isset($this->contentEntityPaths)) {
+ $this->contentEntityPaths = [];
+ $entity_types = $this->entityManager->getDefinitions();
+ foreach ($entity_types as $entity_type_id => $entity_type) {
+ if ($entity_type->entityClassImplements(ContentEntityInterface::class)) {
+ $entity_paths = array_fill_keys($entity_type->getLinkTemplates(), $entity_type_id);
+ $this->contentEntityPaths = array_merge($this->contentEntityPaths, $entity_paths);
+ }
+ }
+ }
+
+ return $this->contentEntityPaths;
+ }
+
+}
projects / yaffs-website / blobdiff