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<?php
namespace Drupal\Core\Config;
use Symfony\Component\EventDispatcher\Event;
/**
* Gets information on all the possible configuration collections.
*/
class ConfigCollectionInfo extends Event {
/**
* Configuration collection information keyed by collection name.
*
* The value is either the configuration factory override that is responsible
* for the collection or null if there is not one.
*
* @var array
*/
protected $collections = [];
/**
* Adds a collection to the list of possible collections.
*
* @param string $collection
* Collection name to add.
* @param \Drupal\Core\Config\ConfigFactoryOverrideInterface $override_service
* (optional) The configuration factory override service responsible for the
* collection.
*
* @throws \InvalidArgumentException
* Exception thrown if $collection is equal to
* \Drupal\Core\Config\StorageInterface::DEFAULT_COLLECTION.
*/
public function addCollection($collection, ConfigFactoryOverrideInterface $override_service = NULL) {
if ($collection == StorageInterface::DEFAULT_COLLECTION) {
throw new \InvalidArgumentException('Can not add the default collection to the ConfigCollectionInfo object');
}
$this->collections[$collection] = $override_service;
}
/**
* Gets the list of possible collection names.
*
* @param bool $include_default
* (Optional) Include the default collection. Defaults to TRUE.
*
* @return array
* The list of possible collection names.
*/
public function getCollectionNames($include_default = TRUE) {
$collection_names = array_keys($this->collections);
sort($collection_names);
if ($include_default) {
array_unshift($collection_names, StorageInterface::DEFAULT_COLLECTION);
}
return $collection_names;
}
/**
* Gets the config factory override service responsible for the collection.
*
* @param string $collection
* The configuration collection.
*
* @return \Drupal\Core\Config\ConfigFactoryOverrideInterface|null
* The override service responsible for the collection if one exists. NULL
* if not.
*/
public function getOverrideService($collection) {
return isset($this->collections[$collection]) ? $this->collections[$collection] : NULL;
}
}