sir_trevor-8.x-1.x-dev/sir_trevor.module

<?php
use Drupal\sir_trevor\Plugin\SirTrevorBlockPlugin;
use Drupal\sir_trevor\Plugin\SirTrevorPlugin;
use Drupal\sir_trevor\Plugin\SirTrevorPluginManagerInterface;

/**
 * Implements hook_theme().
 */
function sir_trevor_theme($existing, $type, $theme, $path) {
  /** @var SirTrevorPluginManagerInterface $blockManager */
  $blockManager = \Drupal::service('plugin.manager.sir_trevor');
  $themes = [];

  /** @var SirTrevorPlugin $plugin */
  foreach ($blockManager->createInstances() as $plugin) {
    if ($plugin instanceof SirTrevorBlockPlugin) {
      $themes["sir_trevor_{$plugin->getMachineName()}"] = [
        'variables' => [
          'data' => [],
          'entity' => NULL,
        ],
        'path' => drupal_get_path('module', $plugin->getDefiningModule()),
        'template' => $plugin->getTemplate(),
      ];
    }
  }

  return $themes;
}

/**
 * Implements hook_library_info_alter() to register libraries on behalf of
 * modules implementing Sir Trevor blocks. This way modules can define their
 * plugins in a single location instead of having to define the plugin in one
 * place and it's assets in another.
 */
function sir_trevor_library_info_alter(&$libraries, $extension) {
  $libraryBuilder = \Drupal::service('sir_trevor.libraries.info.builder');
  /** @var \Drupal\sir_trevor\LibraryInfoBuilder $libraryBuilder */
  $libraryInfo = $libraryBuilder->getLibraryInfo();

  if (!empty($libraryInfo[$extension])) {
    foreach ($libraryInfo[$extension] as $name => $library) {
      $libraries[$name] = $library;
    }
  }
}