MediaWiki/includes/resourceloader/ResourceLoaderLanguageNamesModule.php

<?php
/**
 * ResourceLoader module for providing language names.
 *
 * By default these names will be autonyms however other extensions may
 * provided language names in the context language (e.g. cldr extension)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @author Ed Sanders
 * @author Trevor Parscal
 */

/**
 * ResourceLoader module for populating language specific data.
 */
class ResourceLoaderLanguageNamesModule extends ResourceLoaderFileModule {

	protected $targets = [ 'desktop', 'mobile' ];

	/**
	 * @param ResourceLoaderContext $context
	 * @return array
	 */
	protected function getData( ResourceLoaderContext $context ) {
		return Language::fetchLanguageNames(
			$context->getLanguage(),
			'all'
		);
	}

	/**
	 * @param ResourceLoaderContext $context
	 * @return string JavaScript code
	 */
	public function getScript( ResourceLoaderContext $context ) {
		return Xml::encodeJsCall(
			'mw.language.setData',
			[
				$context->getLanguage(),
				'languageNames',
				$this->getData( $context )
			],
			ResourceLoader::inDebugMode()
		);
	}

	/**
	 * @param ResourceLoaderContext|null $context
	 * @return array
	 */
	public function getDependencies( ResourceLoaderContext $context = null ) {
		return [ 'mediawiki.language' ];
	}

	/**
	 * @return bool
	 */
	public function enableModuleContentVersion() {
		return true;
	}

}