--- /dev/null
+<?php
+
+namespace Drupal\system\Plugin\migrate\destination\d7;
+
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\migrate\Plugin\MigrationInterface;
+use Drupal\migrate\Row;
+use Drupal\migrate\Plugin\migrate\destination\DestinationBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Persist theme settings to the config system.
+ *
+ * @MigrateDestination(
+ * id = "d7_theme_settings"
+ * )
+ */
+class ThemeSettings extends DestinationBase implements ContainerFactoryPluginInterface {
+
+ /**
+ * The configuration factory.
+ *
+ * @var \Drupal\Core\Config\ConfigFactoryInterface
+ */
+ protected $configFactory;
+
+ /**
+ * Constructs a theme settings destination object.
+ *
+ * @param array $configuration
+ * Plugin configuration.
+ * @param string $plugin_id
+ * The plugin ID.
+ * @param mixed $plugin_definition
+ * The plugin definition.
+ * @param \Drupal\migrate\Plugin\MigrationInterface $migration
+ * The current migration.
+ * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+ * The configuration factory.
+ */
+ public function __construct(array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration, ConfigFactoryInterface $config_factory) {
+ parent::__construct($configuration, $plugin_id, $plugin_definition, $migration);
+ $this->configFactory = $config_factory;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration = NULL) {
+ return new static(
+ $configuration,
+ $plugin_id,
+ $plugin_definition,
+ $migration,
+ $container->get('config.factory')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function import(Row $row, array $old_destination_id_values = []) {
+ $imported = FALSE;
+ $config = $this->configFactory->getEditable($row->getDestinationProperty('configuration_name'));
+ $theme_settings = $row->getDestination();
+ // Remove keys not in theme settings.
+ unset($theme_settings['configuration_name']);
+ unset($theme_settings['theme_name']);
+ if (isset($theme_settings)) {
+ theme_settings_convert_to_config($theme_settings, $config);
+ $config->save();
+ $imported = TRUE;
+ }
+ return $imported;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getIds() {
+ $ids['name']['type'] = 'string';
+ return $ids;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function fields(MigrationInterface $migration = NULL) {
+ // Theme settings vary by theme, so no specific fields are defined.
+ return [];
+ }
+
+}