--- /dev/null
+<?php
+
+namespace Drupal\bootstrap_layouts;
+
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Extension\ThemeHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\Core\Theme\ThemeManagerInterface;
+use Symfony\Component\DependencyInjection\ContainerAwareInterface;
+use Symfony\Component\DependencyInjection\ContainerAwareTrait;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+class BootstrapLayoutsPluginManager extends DefaultPluginManager implements ContainerInjectionInterface, ContainerAwareInterface {
+
+ use ContainerAwareTrait;
+ use StringTranslationTrait;
+
+ /**
+ * @var \Drupal\Core\Extension\ThemeHandlerInterface
+ */
+ protected $themeHandler;
+
+ /**
+ * @var \Drupal\Core\Theme\ThemeManagerInterface
+ */
+ protected $themeManager;
+
+ /**
+ * Base plugin manager for Bootstrap Layouts plugin managers.
+ *
+ * The "container.namespaces" service does not contain theme namespaces
+ * since themes are not registered in the container. To allow themes to be
+ * able to participate in these plugins, the normal "namespaces" provided
+ * must be appending with the missing autoloader prefixes of the themes.
+ *
+ * @param \Traversable $namespaces
+ * An object that implements \Traversable which contains the root paths
+ * keyed by the corresponding namespace to look for plugin implementations.
+ * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
+ * Cache backend instance to use.
+ * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+ * The module handler to invoke the alter hook with.
+ * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
+ * The theme manager used to invoke the alter hook with.
+ * @param \Drupal\Core\Theme\ThemeManagerInterface $theme_manager
+ * The theme manager used to invoke the alter hook with.
+ * @param string|null $plugin_interface
+ * (optional) The interface each plugin should implement.
+ * @param string $plugin_definition_annotation_name
+ * (optional) The name of the annotation that contains the plugin definition.
+ * Defaults to 'Drupal\Component\Annotation\Plugin'.
+ */
+ public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler, ThemeHandlerInterface $theme_handler, ThemeManagerInterface $theme_manager, $plugin_interface = NULL, $plugin_definition_annotation_name = 'Drupal\Component\Annotation\Plugin') {
+ /** @var \Composer\Autoload\ClassLoader $class_loader */
+ $class_loader = \Drupal::service('class_loader');
+
+ /** @var \ArrayObject $namespaces */
+ $ns = $namespaces->getArrayCopy();
+
+ foreach ($class_loader->getPrefixesPsr4() as $prefix => $paths) {
+ // Remove trailing path separators.
+ $prefix = trim($prefix, '\\');
+
+ // Remove the DRUPAL_ROOT prefix.
+ $path = str_replace(\Drupal::root() . '/', '', reset($paths));
+
+ // Only add missing contrib theme namespaces.
+ if (preg_match('/^(core|vendor)/', $path) === 0 && !isset($namespaces[$prefix])) {
+ $ns[$prefix] = $path;
+ }
+ }
+
+ // Replace the namespaces data.
+ $namespaces->exchangeArray($ns);
+
+ // Construct the plugin manager now.
+ parent::__construct('Plugin/BootstrapLayouts', $namespaces, $module_handler, $plugin_interface, $plugin_definition_annotation_name);
+
+ // Set the theme handler and manager.
+ $this->themeHandler = $theme_handler;
+ $this->themeManager = $theme_manager;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('container.namespaces'),
+ $container->get('cache.discovery'),
+ $container->get('module_handler'),
+ $container->get('theme_handler'),
+ $container->get('theme.manager')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function alterDefinitions(&$definitions) {
+ if ($this->alterHook) {
+ $this->moduleHandler->alter($this->alterHook, $definitions);
+ $this->themeManager->alter($this->alterHook, $definitions);
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function providerExists($provider) {
+ return $this->moduleHandler->moduleExists($provider) || $this->themeHandler->themeExists($provider);
+ }
+
+}