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编辑当前文件:/home2/sdektunc/.trash/administrator.9/components/com_messages/src/Field/UserMessagesField.php

<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_messages
 *
 * @copyright   (C) 2010 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Messages\Administrator\Field;

\defined('_JEXEC') or die;

use Joomla\CMS\Access\Access;
use Joomla\CMS\Factory;
use Joomla\CMS\Form\Field\UserField;

/**
 * Supports a modal select of users that have access to com_messages
 *
 * @since  1.6
 */
class UserMessagesField extends UserField
{
	/**
	 * The form field type.
	 *
	 * @var		string
	 * @since   1.6
	 */
	public $type = 'UserMessages';

/**
	 * Method to get the filtering groups (null means no filtering)
	 *
	 * @return  array|null	array of filtering groups or null.
	 *
	 * @since   1.6
	 */
	protected function getGroups()
	{
		// Compute usergroups
		$db = Factory::getDbo();
		$query = $db->getQuery(true)
			->select('id')
			->from('#__usergroups');
		$db->setQuery($query);

try
		{
			$groups = $db->loadColumn();
		}
		catch (\RuntimeException $e)
		{
			Factory::getApplication()->enqueueMessage($e->getMessage(), 'notice');

return null;
		}

foreach ($groups as $i => $group)
		{
			if (Access::checkGroup($group, 'core.admin'))
			{
				continue;
			}

if (!Access::checkGroup($group, 'core.manage', 'com_messages'))
			{
				unset($groups[$i]);
				continue;
			}

if (!Access::checkGroup($group, 'core.login.admin'))
			{
				unset($groups[$i]);
			}
		}

return array_values($groups);
	}

/**
	 * Method to get the users to exclude from the list of users
	 *
	 * @return  array|null array of users to exclude or null to to not exclude them
	 *
	 * @since   1.6
	 */
	protected function getExcluded()
	{
		return array(Factory::getUser()->id);
	}
}