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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\Core\Template\Loader\ThemeRegistryLoader. | |
| */ | |
| namespace Drupal\Core\Template\Loader; | |
| use Drupal\Core\Theme\Registry; | |
| /** | |
| * Loads templates based on information from the Drupal theme registry. | |
| * | |
| * Allows for template inheritance based on the currently active template. | |
| */ | |
| class ThemeRegistryLoader extends \Twig_Loader_Filesystem { | |
| /** | |
| * The theme registry used to determine which template to use. | |
| * | |
| * @var \Drupal\Core\Theme\Registry | |
| */ | |
| protected $themeRegistry; | |
| /** | |
| * Constructs a new ThemeRegistryLoader object. | |
| * | |
| * @param \Drupal\Core\Theme\Registry $theme_registry | |
| * The theme registry. | |
| */ | |
| public function __construct(Registry $theme_registry) { | |
| $this->themeRegistry = $theme_registry; | |
| } | |
| /** | |
| * Finds the path to the requested template. | |
| * | |
| * @param string $name | |
| * The name of the template to load. | |
| * @param bool $throw | |
| * Whether to throw an exception when an error occurs. | |
| * | |
| * @return string | |
| * The path to the template. | |
| * | |
| * @throws \Twig_Error_Loader | |
| * Thrown if a template matching $name cannot be found. | |
| */ | |
| protected function findTemplate($name, $throw = TRUE) { | |
| // Allow for loading based on the Drupal theme registry. | |
| $hook = str_replace('.html.twig', '', strtr($name, '-', '_')); | |
| $theme_registry = $this->themeRegistry->getRuntime(); | |
| if ($theme_registry->has($hook)) { | |
| $info = $theme_registry->get($hook); | |
| if (isset($info['path'])) { | |
| $path = $info['path'] . '/' . $name; | |
| } | |
| elseif (isset($info['template'])) { | |
| $path = $info['template'] . '.html.twig'; | |
| } | |
| if (isset($path) && is_file($path)) { | |
| return $this->cache[$name] = $path; | |
| } | |
| } | |
| if ($throw) { | |
| throw new \Twig_Error_Loader(sprintf('Unable to find template "%s" in the Drupal theme registry.', $name)); | |
| } | |
| } | |
| } |