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view core/lib/Drupal/Core/Asset/LibraryDiscoveryInterface.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 | 4c8ae668cc8c |
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<?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(); }