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<?php
/**
 * Renders a list of database default collations
 *
 * @package     Joomla
 * @subpackage  Form
 * @copyright   Copyright (C) 2005-2020  Media A-Team, Inc. - All rights
reserved.
 * @license     GNU/GPL http://www.gnu.org/copyleft/gpl.html
 */

// No direct access
defined('_JEXEC') or die('Restricted access');

use Joomla\CMS\Language\Text;
use Joomla\CMS\Form\Form;
use Joomla\CMS\Form\Field\FolderlistField;
use Joomla\CMS\Factory;
use Joomla\CMS\HTML\HTMLHelper;

require_once JPATH_ADMINISTRATOR .
'/components/com_fabrik/helpers/element.php';

/**
 * Renders a list of installed image libraries
 *
 * @package     Joomla
 * @subpackage  Form
 * @since       3.0.7
 */

class JFormFieldCollation extends FolderlistField
{
	/**
	 * Method to attach a Form object to the field.
	 *
	 * @param   object  $element  The SimpleXMLElement object representing the
<field /> tag for the form field object.
	 * @param   mixed   $value    The form field value to validate.
	 * @param   string  $group    The field name group control value. This
acts as as an array container for the field.
	 *                            For example if the field has
name="foo" and the group value is set to "bar" then the
	 *                            full field name would end up being
"bar[foo]".
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   11.1
	 */
	public function setup(SimpleXMLElement $element, $value, $group = null)
	{
		$return = parent::setup($element, $value, $group);

		$defaultToTableValue =
$this->element->attributes()->default_to_table;
		//Trying to access array offset on value of type null on line 47
		if ($defaultToTableValue)
		{
			$defaultToTableValue = (bool)
$this->element->attributes()->{$defaultToTableValue[0]};
		}
		else
		{
			$defaultToTableValue = true;
		}

		if ($this->value == '' && $return &&
$defaultToTableValue)
		{
			$db = Factory::getDbo();

			/*
			 * Attempt to get the real Db collation (tmp fix before this makes it
into J itself
			 * see - https://github.com/joomla/joomla-cms/pull/2092
			 */
			$db->setQuery('SHOW VARIABLES LIKE
"collation_database"');

			try
			{
				$res = $db->loadObject();

				if (isset($res->Value))
				{
					$this->value = $res->Value;
				}
			}
			catch (RuntimeException $e)
			{
				$this->value = $db->getCollation();
			}
		}

		return $return;
	}

	/**
	 * Get element options
	 *
	 * @return  array
	 */
	protected function getOptions()
	{
		$db = Factory::getDbo();
		$db->setQuery('SHOW COLLATION WHERE ' .
$db->quoteName('Compiled') . ' = ' .
$db->quote('Yes'));
		$rows = $db->loadObjectList();
		sort($rows);
		$opts = array();

		if ($this->element->attributes()->show_none && (bool)
$this->element->attributes()->show_none[0])
		{
			$opts[] = HTMLHelper::_('select.option', '',
Text::_('COM_FABRIK_NONE'));
		}

		foreach ($rows as $row)
		{
			$opts[] = HTMLHelper::_('select.option', $row->Collation);
		}

		return $opts;
	}
}