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* @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\Language; \defined('JPATH_PLATFORM') or die; use Joomla\CMS\Application\CMSApplication; use Joomla\CMS\Factory; use Joomla\Database\DatabaseInterface; /** * Utility class for multilang * * @since 2.5.4 */ class Multilanguage { /** * Flag indicating multilanguage functionality is enabled. * * @var boolean * @since 4.0.0 */ public static $enabled = false; /** * Method to determine if the language filter plugin is enabled. * This works for both site and administrator. * * @param CMSApplication $app The application * @param DatabaseInterface $db The database * * @return boolean True if site is supporting multiple languages; false otherwise. * * @since 2.5.4 */ public static function isEnabled(CMSApplication $app = null, DatabaseInterface $db = null) { // Flag to avoid doing multiple database queries. static $tested = false; // Do not proceed with testing if the flag is true if (static::$enabled) { return true; } // Get application object. $app = $app ?: Factory::getApplication(); // If being called from the frontend, we can avoid the database query. if ($app->isClient('site')) { static::$enabled = $app->getLanguageFilter(); return static::$enabled; } // If already tested, don't test again. if (!$tested) { // Determine status of language filter plugin. $db = $db ?: Factory::getDbo(); $query = $db->getQuery(true) ->select($db->quoteName('enabled')) ->from($db->quoteName('#__extensions')) ->where( [ $db->quoteName('type') . ' = ' . $db->quote('plugin'), $db->quoteName('folder') . ' = ' . $db->quote('system'), $db->quoteName('element') . ' = ' . $db->quote('languagefilter'), ] ); $db->setQuery($query); static::$enabled = (bool) $db->loadResult(); $tested = true; } return static::$enabled; } /** * Method to return a list of language home page menu items. * * @param DatabaseInterface $db The database * * @return array of menu objects. * * @since 3.5 */ public static function getSiteHomePages(DatabaseInterface $db = null) { // To avoid doing duplicate database queries. static $multilangSiteHomePages = null; if (!isset($multilangSiteHomePages)) { // Check for Home pages languages. $db = $db ?: Factory::getDbo(); $query = $db->getQuery(true) ->select( [ $db->quoteName('language'), $db->quoteName('id'), ] ) ->from($db->quoteName('#__menu')) ->where( [ $db->quoteName('home') . ' = ' . $db->quote('1'), $db->quoteName('published') . ' = 1', $db->quoteName('client_id') . ' = 0', ] ); $db->setQuery($query); $multilangSiteHomePages = $db->loadObjectList('language'); } return $multilangSiteHomePages; } }