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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\Core\Config\ConfigFactoryOverrideBase. | |
| */ | |
| namespace Drupal\Core\Config; | |
| use Symfony\Component\EventDispatcher\EventSubscriberInterface; | |
| /** | |
| * Defines a base event listener implementation configuration overrides. | |
| */ | |
| abstract class ConfigFactoryOverrideBase implements EventSubscriberInterface { | |
| /** | |
| * Reacts to the ConfigEvents::COLLECTION_INFO event. | |
| * | |
| * @param \Drupal\Core\Config\ConfigCollectionInfo $collection_info | |
| * The configuration collection info event. | |
| */ | |
| abstract public function addCollections(ConfigCollectionInfo $collection_info); | |
| /** | |
| * Actions to be performed to configuration override on configuration save. | |
| * | |
| * @param \Drupal\Core\Config\ConfigCrudEvent $event | |
| * The config CRUD event. | |
| */ | |
| abstract public function onConfigSave(ConfigCrudEvent $event); | |
| /** | |
| * Actions to be performed to configuration override on configuration delete. | |
| * | |
| * @param \Drupal\Core\Config\ConfigCrudEvent $event | |
| * The config CRUD event. | |
| */ | |
| abstract public function onConfigDelete(ConfigCrudEvent $event); | |
| /** | |
| * Actions to be performed to configuration override on configuration rename. | |
| * | |
| * @param \Drupal\Core\Config\ConfigRenameEvent $event | |
| * The config rename event. | |
| */ | |
| abstract public function onConfigRename(ConfigRenameEvent $event); | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| static function getSubscribedEvents() { | |
| $events[ConfigEvents::COLLECTION_INFO][] = array('addCollections'); | |
| $events[ConfigEvents::SAVE][] = array('onConfigSave', 20); | |
| $events[ConfigEvents::DELETE][] = array('onConfigDelete', 20); | |
| $events[ConfigEvents::RENAME][] = array('onConfigRename', 20); | |
| return $events; | |
| } | |
| /** | |
| * Filters data in the override based on what is currently in configuration. | |
| * | |
| * @param \Drupal\Core\Config\Config $config | |
| * Current configuration object. | |
| * @param \Drupal\Core\Config\StorableConfigBase $override | |
| * Override object corresponding to the configuration to filter data in. | |
| */ | |
| protected function filterOverride(Config $config, StorableConfigBase $override) { | |
| $override_data = $override->get(); | |
| $changed = $this->filterNestedArray($config->get(), $override_data); | |
| if (empty($override_data)) { | |
| // If no override values are left that would apply, remove the override. | |
| $override->delete(); | |
| } | |
| elseif ($changed) { | |
| // Otherwise set the filtered override values back. | |
| $override->setData($override_data)->save(TRUE); | |
| } | |
| } | |
| /** | |
| * Filters data in nested arrays. | |
| * | |
| * @param array $original_data | |
| * Original data array to filter against. | |
| * @param array $override_data | |
| * Override data to filter. | |
| * | |
| * @return bool | |
| * TRUE if $override_data was changed, FALSE otherwise. | |
| */ | |
| protected function filterNestedArray(array $original_data, array &$override_data) { | |
| $changed = FALSE; | |
| foreach ($override_data as $key => $value) { | |
| if (!isset($original_data[$key])) { | |
| // The original data is not there anymore, remove the override. | |
| unset($override_data[$key]); | |
| $changed = TRUE; | |
| } | |
| elseif (is_array($override_data[$key])) { | |
| if (is_array($original_data[$key])) { | |
| // Do the filtering one level deeper. | |
| $changed = $this->filterNestedArray($original_data[$key], $override_data[$key]); | |
| // If no overrides are left under this level, remove the level. | |
| if (empty($override_data[$key])) { | |
| unset($override_data[$key]); | |
| $changed = TRUE; | |
| } | |
| } | |
| else { | |
| // The override is an array but the value is not, this will not go | |
| // well, remove the override. | |
| unset($override_data[$key]); | |
| $changed = TRUE; | |
| } | |
| } | |
| } | |
| return $changed; | |
| } | |
| } |