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view core/lib/Drupal/Core/Asset/LibraryDiscovery.php @ 19:fa3358dc1485 tip
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author | Chris Cannam |
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date | Wed, 28 Aug 2019 13:14:47 +0100 |
parents | 129ea1e6d783 |
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<?php namespace Drupal\Core\Asset; use Drupal\Core\Cache\CacheCollectorInterface; /** * Discovers available asset libraries in Drupal. */ class LibraryDiscovery implements LibraryDiscoveryInterface { /** * The library discovery cache collector. * * @var \Drupal\Core\Cache\CacheCollectorInterface */ protected $collector; /** * The final library definitions, statically cached. * * Hooks hook_library_info_alter() and hook_js_settings_alter() allow modules * and themes to dynamically alter a library definition (once per request). * * @var array */ protected $libraryDefinitions = []; /** * Constructs a new LibraryDiscovery instance. * * @param \Drupal\Core\Cache\CacheCollectorInterface $library_discovery_collector * The library discovery cache collector. */ public function __construct(CacheCollectorInterface $library_discovery_collector) { $this->collector = $library_discovery_collector; } /** * {@inheritdoc} */ public function getLibrariesByExtension($extension) { if (!isset($this->libraryDefinitions[$extension])) { $libraries = $this->collector->get($extension); $this->libraryDefinitions[$extension] = []; foreach ($libraries as $name => $definition) { $this->libraryDefinitions[$extension][$name] = $definition; } } return $this->libraryDefinitions[$extension]; } /** * {@inheritdoc} */ public function getLibraryByName($extension, $name) { $extension = $this->getLibrariesByExtension($extension); return isset($extension[$name]) ? $extension[$name] : FALSE; } /** * {@inheritdoc} */ public function clearCachedDefinitions() { $this->libraryDefinitions = []; $this->collector->clear(); } }