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/home/develito/httpdocs/libraries/syw/fields/customfieldslist.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 JFormFieldCustomFieldsList extends JFormField
	{
		public $type = 'CustomFieldsList';

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 JFormFieldCustomFieldsList extends JFormFieldList
	{
		public $type = 'CustomFieldsList';

protected $context;
		protected $allowed_types;
		protected $show_group;
		protected $show_on_client;

static $core_fields = array();

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

if (!isset(self::$core_fields[$usable_context])) {
				JLoader::register('FieldsHelper', JPATH_ADMINISTRATOR . '/components/com_fields/helpers/fields.php');
				self::$core_fields[$usable_context] = FieldsHelper::getFields($context);
			}

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

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

$options = array();

// get Joomla! fields
			// 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')) {

$fields = self::getCoreFields($this->context);

// organize the fields according to their group

$fieldsPerGroup = array(
					0 => array()
				);

$groupTitles = array(
					0 => JText::_('LIB_SYW_VALUE_NOGROUPFIELD')
				);

foreach ($fields as $field) {

if ($this->allowed_types != null && !in_array($field->type, $this->allowed_types)) {
						continue;
					}

if ($this->show_on_client != null && $this->show_on_client == 'site' && $field->params->get('show_on') == 2) {
						continue;
					}

if ($this->show_on_client != null && $this->show_on_client == 'administrator' && $field->params->get('show_on') == 1) {
						continue;
					}

if (!array_key_exists($field->group_id, $fieldsPerGroup)) {
						$fieldsPerGroup[$field->group_id] = array();
						$groupTitles[$field->group_id] = $field->group_title;
					}

$fieldsPerGroup[$field->group_id][] = $field;
				}

// loop trough the groups

foreach ($fieldsPerGroup as $group_id => $groupFields) {

if (!$groupFields) {
						continue;
					}

//$options[] = JHtml::_('select.optgroup', $groupTitles[$group_id]);

foreach ($groupFields as $field) {
						if ($this->show_group) {
							$options[] = JHTML::_('select.option', $field->id, $groupTitles[$group_id].': '.$field->title);
						} else {
							$options[] = JHTML::_('select.option', $field->id, $field->title);
						}
					}

//$options[] = JHtml::_('select.optgroup', $groupTitles[$group_id]);
				}
			}

// 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';
				$this->allowed_types = isset($this->element['allowed_types']) ? explode(",", (string)$this->element['allowed_types']) : null;
				$this->show_group = isset($this->element['show_group']) ? filter_var($this->element['show_group'], FILTER_VALIDATE_BOOLEAN) : true;
				$this->show_on_client = isset($this->element['show_on_client']) ? (string)$this->element['show_on_client'] : null;
			}

return $return;
		}
	}
}
?>