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//home/develito/httpdocs/libraries/syw/fields/customfieldgroupslist.php

<?php
/**
 * @copyright	Copyright (C) 2011 Simplify Your Web, Inc. All rights reserved.
 * @license		GNU General Public License version 3 or later; see LICENSE.txt
*/

// no direct access
defined( '_JEXEC' ) or die;

jimport('joomla.filesystem.folder');
jimport('joomla.filesystem.file');

if (version_compare(JVERSION, '3.7', 'lt')) {

class JFormFieldCustomFieldGroupsList extends JFormField
	{
		public $type = 'CustomFieldGroupsList';

protected function getInput()
		{
			$lang = JFactory::getLanguage();
			$lang->load('lib_syw.sys', JPATH_SITE);

$html = '';

$html .= '<div style="margin-bottom:0" class="alert alert-info">';
				$html .= '<span>'.JText::sprintf('LIB_SYW_MESSAGE_NEEDJOOMLAFORCUSTOMFIELDS').'</span>';
			$html .= '</div>';

return $html;
		}
	}
} else {

JFormHelper::loadFieldClass('list');

class JFormFieldCustomFieldGroupsList extends JFormFieldList
	{
		public $type = 'CustomFieldGroupsList';

protected $context;

static $core_fieldgroups = array();

static function getCoreFieldGroups($context)
		{
			$usable_context = str_replace('.', '_', $context);

if (!isset(self::$core_fieldgroups[$usable_context])) {

$db = JFactory::getDbo();

$query = $db->getQuery(true);

$query->select('id, title');
				$query->from('#__fields_groups');
				$query->where('state = 1');
				$query->where('context = ' . $db->quote($context));

$db->setQuery($query);

$results = array();
				try {
					$results = $db->loadObjectList();
				} catch (RuntimeException $e) {
					JFactory::getApplication()->enqueueMessage(JText::_('JERROR_AN_ERROR_HAS_OCCURRED'), 'error');
				}

self::$core_fieldgroups[$usable_context] = $results;
			}

return self::$core_fieldgroups[$usable_context];
		}

protected function getOptions()
		{
			$lang = JFactory::getLanguage();
			$lang->load('lib_syw.sys', JPATH_SITE);

$options = array();

// get Joomla! field groups
			// test the fields folder first to avoid message warning that the component is missing
			if (JFolder::exists(JPATH_ADMINISTRATOR . '/components/com_fields') && JComponentHelper::isEnabled('com_fields') && JComponentHelper::getParams(explode('.', $this->context)[0])->get('custom_fields_enable', '1')) {

$groups = self::getCoreFieldGroups($this->context);

foreach ($groups as $group) {
					$options[] = JHTML::_('select.option', $group->id, $group->title);
				}
			}

// merge any additional options in the XML definition.
			$options = array_merge(parent::getOptions(), $options);

return $options;
		}

public function setup(SimpleXMLElement $element, $value, $group = null)
		{
			$return = parent::setup($element, $value, $group);

if ($return) {
				$this->context = isset($this->element['context']) ? (string)$this->element['context'] : 'com_contact.contact';
			}

return $return;
		}
	}
}
?>