+<?php
+
+/**
+ * @file
+ * Contains \Drupal\video\ProviderManager.
+ */
+
+namespace Drupal\video;
+
+use Drupal\Component\Plugin\Mapper\MapperInterface;
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+
+/**
+ * Gathers the provider plugins.
+ */
+class ProviderManager extends DefaultPluginManager implements ProviderManagerInterface, MapperInterface {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
+ parent::__construct('Plugin/video/Provider', $namespaces, $module_handler, 'Drupal\video\ProviderPluginInterface', 'Drupal\video\Annotation\VideoEmbeddableProvider');
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getProvidersOptionList() {
+ $options = [];
+ foreach ($this->getDefinitions() as $definition) {
+ $options[$definition['id']] = $definition['label'];
+ }
+ return $options;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function loadDefinitionsFromOptionList($options) {
+ $definitions = [];
+ // When no options are selected, all plugins are applicable.
+ if (count(array_keys($options, '0')) == count($options) || empty($options)) {
+ return $this->getDefinitions();
+ }
+ else {
+ foreach ($options as $provider_id => $enabled) {
+ if ($enabled) {
+ $definitions[$provider_id] = $this->getDefinition($provider_id);
+ }
+ }
+ }
+ return $definitions;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function loadApplicableDefinitionMatches(array $definitions, $user_input) {
+ foreach ($definitions as $definition) {
+ foreach($definition['regular_expressions'] as $reqular_expr){
+ if (preg_match($reqular_expr, $user_input, $matches)) {
+ return array('definition' => $definition, 'matches' => $matches);
+ }
+ }
+ }
+ return FALSE;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function loadProviderFromStream($stream, $file, $metadata = array(), $settings = array()) {
+ $definitions = $this->getDefinitions();
+ foreach ($definitions as $definition) {
+ if($definition['stream_wrapper'] == $stream){
+ return $definition ? $this->createInstance($definition['id'], ['file' => $file, 'metadata' => $metadata, 'settings' => $settings]) : FALSE;
+ }
+ }
+ }
+}