diff core/lib/Drupal/Core/Asset/LibraryDiscoveryInterface.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/Asset/LibraryDiscoveryInterface.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,53 @@
+<?php
+
+namespace Drupal\Core\Asset;
+
+/**
+ * Discovers information for asset (CSS/JavaScript) libraries.
+ *
+ * Library information is statically cached. Libraries are keyed by extension
+ * for several reasons:
+ * - Libraries are not unique. Multiple extensions might ship with the same
+ *   library in a different version or variant. This registry cannot (and does
+ *   not attempt to) prevent library conflicts.
+ * - Extensions implementing and thereby depending on a library that is
+ *   registered by another extension can only rely on that extension's library.
+ * - Two (or more) extensions can still register the same library and use it
+ *   without conflicts in case the libraries are loaded on certain pages only.
+ */
+interface LibraryDiscoveryInterface {
+
+  /**
+   * Gets all libraries defined by an extension.
+   *
+   * @param string $extension
+   *   The name of the extension that registered a library.
+   *
+   * @return array
+   *   An associative array of libraries registered by $extension is returned
+   *   (which may be empty).
+   *
+   * @see self::getLibraryByName()
+   */
+  public function getLibrariesByExtension($extension);
+
+  /**
+   * Gets a single library defined by an extension by name.
+   *
+   * @param string $extension
+   *   The name of the extension that registered a library.
+   * @param string $name
+   *   The name of a registered library to retrieve.
+   *
+   * @return array|false
+   *   The definition of the requested library, if $name was passed and it
+   *   exists, otherwise FALSE.
+   */
+  public function getLibraryByName($extension, $name);
+
+  /**
+   * Clears static and persistent library definition caches.
+   */
+  public function clearCachedDefinitions();
+
+}