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<?php
/**
 * @package     Joomla.Platform
 * @subpackage  HTML
 *
 * @copyright   Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

/**
 * Utility class working with content language select lists
 *
 * @package     Joomla.Platform
 * @subpackage  HTML
 * @since       11.1
 */
abstract class JHtmlContentLanguage
{
	/**
	 * Cached array of the content language items.
	 *
	 * @var    array
	 * @since  11.1
	 */
	protected static $items = null;

/**
	 * Get a list of the available content language items.
	 *
	 * @param   boolean  $all        True to include All (*)
	 * @param   boolean  $translate  True to translate All
	 *
	 * @return  string
	 * 
	 * @since   11.1
	 *
	 * @see     JFormFieldContentLanguage
	 */
	public static function existing($all = false, $translate=false)
	{
		if (empty(self::$items)) {
			// Get the database object and a new query object.
			$db		= JFactory::getDBO();
			$query	= $db->getQuery(true);

// Build the query.
			$query->select('a.lang_code AS value, a.title AS text, a.title_native');
			$query->from('#__languages AS a');
			$query->where('a.published >= 0');
			$query->order('a.title');

// Set the query and load the options.
			$db->setQuery($query);
			self::$items = $db->loadObjectList();
			if ($all) {
				array_unshift(self::$items, new JObject(array('value'=>'*','text'=>$translate ? JText::alt('JALL','language') : 'JALL_LANGUAGE')));
			}

// Detect errors
			if ($db->getErrorNum()) {
				JError::raiseWarning(500, $db->getErrorMsg());
			}
		}
		return self::$items;
	}
}