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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2015 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Form\Field;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Factory;

/**
 * Provides a list of published content languages with home pages
 *
 * @see    \Joomla\CMS\Form\Field\LanguageField for a select list of application languages.
 * @since  3.5
 */
class FrontendlanguageField extends ListField
{
	/**
	 * The form field type.
	 *
	 * @var    string
	 * @since  3.5
	 */
	public $type = 'Frontend_Language';

/**
	 * Method to get the field options for frontend published content languages with homes.
	 *
	 * @return  array  The options the field is going to show.
	 *
	 * @since   3.5
	 */
	protected function getOptions()
	{
		// Get the database object and a new query object.
		$db    = Factory::getDbo();
		$query = $db->getQuery(true);

$query->select('a.lang_code AS value, a.title AS text')
			->from($db->quoteName('#__languages') . ' AS a')
			->where('a.published = 1')
			->order('a.title');

// Select the language home pages.
		$query->select('l.home, l.language')
			->innerJoin($db->quoteName('#__menu') . ' AS l ON l.language=a.lang_code AND l.home=1 AND l.published=1 AND l.language <> ' . $db->quote('*'))
			->innerJoin($db->quoteName('#__extensions') . ' AS e ON e.element = a.lang_code')
			->where('e.client_id = 0')
			->where('e.enabled = 1')
			->where('e.state = 0');

$db->setQuery($query);

try
		{
			$languages = $db->loadObjectList();
		}
		catch (\RuntimeException $e)
		{
			$languages = array();

if (Factory::getUser()->authorise('core.admin'))
			{
				Factory::getApplication()->enqueueMessage($e->getMessage(), 'error');
			}
		}

// Merge any additional options in the XML definition.
		return array_merge(parent::getOptions(), $languages);
	}
}