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/home/develito/httpdocs/libraries/regularlabs/fields/checkbox.php

<?php
/**
 * @package         Regular Labs Library
 * @version         19.9.15966
 * 
 * @author          Peter van Westen <info@regularlabs.com>
 * @link            http://www.regularlabs.com
 * @copyright       Copyright © 2019 Regular Labs All Rights Reserved
 * @license         http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 */

defined('_JEXEC') or die;

use Joomla\CMS\Factory as JFactory;
use Joomla\CMS\Language\Text as JText;

if ( ! is_file(JPATH_LIBRARIES . '/regularlabs/autoload.php'))
{
	return;
}

require_once JPATH_LIBRARIES . '/regularlabs/autoload.php';

class JFormFieldRL_Checkbox extends \RegularLabs\Library\Field
{
	public $type = 'Checkbox';

protected function getInput()
	{
		$showcheckall = $this->get('showcheckall', 0);

$checkall = ($this->value == '*');

if ( ! $checkall)
		{
			if ( ! is_array($this->value))
			{
				$this->value = explode(',', $this->value);
			}
		}

$options = [];
		foreach ($this->element->children() as $option)
		{
			if ($option->getName() != 'option')
			{
				continue;
			}

$text   = trim((string) $option);
			$hasval = 0;
			if (isset($option['value']))
			{
				$val      = (string) $option['value'];
				$disabled = (int) $option['disabled'];
				$hasval   = 1;
			}
			if ($hasval)
			{
				$option = '<input type="checkbox" class="rl_' . $this->id . '" id="' . $this->id . $val . '" name="' . $this->name . '[]" value="' . $val . '"';
				if ($checkall || in_array($val, $this->value))
				{
					$option .= ' checked="checked"';
				}
				if ($disabled)
				{
					$option .= ' disabled="disabled"';
				}
				$option .= '> <label for="' . $this->id . $val . '" class="checkboxes">' . JText::_($text) . '</label>';
			}
			else
			{
				$option = '<label style="clear:both;"><strong>' . JText::_($text) . '</strong></label>';
			}
			$options[] = $option;
		}

$options = implode('', $options);

if ($showcheckall)
		{
			$js = "
				jQuery(document).ready(function() {
					RegularLabsForm.initCheckAlls('rl_checkall_" . $this->id . "', 'rl_" . $this->id . "');
				});
			";
			JFactory::getDocument()->addScriptDeclaration($js);

$checker = '<input id="rl_checkall_' . $this->id . '" type="checkbox" onclick=" RegularLabsForm.checkAll( this, \'rl_' . $this->id . '\' );"> ' . JText::_('JALL');

$options = $checker . '<br>' . $options;
		}
		$options .= '<input type="hidden" id="' . $this->id . 'x" name="' . $this->name . '' . '[]" value="x" checked="checked">';

$html   = [];
		$html[] = '<fieldset id="' . $this->id . '" class="checkbox">';
		$html[] = $options;
		$html[] = '</fieldset>';

return implode('', $html);
	}
}