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libraries/cms/form/field/contentlanguage.php

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+<?php
+/**
+ * @package     Joomla.Libraries
+ * @subpackage  Form
+ *
+ * @copyright   Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
+ * @license     GNU General Public License version 2 or later; see LICENSE
+ */
+
+defined('JPATH_PLATFORM') or die;
+
+JFormHelper::loadFieldClass('list');
+
+/**
+ * Form Field class for the Joomla Platform.
+ * Provides a list of content languages
+ *
+ * @package     Joomla.Libraries
+ * @subpackage  Form
+ * @see         JFormFieldLanguage for a select list of application languages.
+ * @since       1.6
+ */
+class JFormFieldContentlanguage extends JFormFieldList
+{
+	/**
+	 * The form field type.
+	 *
+	 * @var    string
+	 * @since  1.6
+	 */
+	public $type = 'ContentLanguage';
+
+	/**
+	 * Method to get the field options for content languages.
+	 *
+	 * @return  array  The options the field is going to show.
+	 *
+	 * @since   1.6
+	 */
+	protected function getOptions()
+	{
+		return array_merge(parent::getOptions(), JHtml::_('contentlanguage.existing'));
+	}
+}