checkbox.php
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<?php
/**
* @package Joomla.Platform
* @subpackage Form
*
* @copyright Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* Form Field class for the Joomla Platform.
* Single checkbox field.
* This is a boolean field with null for false and the specified option for true
*
* @link http://www.w3.org/TR/html-markup/input.checkbox.html#input.checkbox
* @see JFormFieldCheckboxes
* @since 1.7.0
*/
class JFormFieldCheckbox extends JFormField
{
/**
* The form field type.
*
* @var string
* @since 1.7.0
*/
protected $type = 'Checkbox';
/**
* The checked state of checkbox field.
*
* @var boolean
* @since 3.2
*/
protected $checked = false;
/**
* Method to get certain otherwise inaccessible properties from the form field object.
*
* @param string $name The property name for which to get the value.
*
* @return mixed The property value or null.
*
* @since 3.2
*/
public function __get($name)
{
switch ($name)
{
case 'checked':
return $this->checked;
}
return parent::__get($name);
}
/**
* Method to set certain otherwise inaccessible properties of the form field object.
*
* @param string $name The property name for which to set the value.
* @param mixed $value The value of the property.
*
* @return void
*
* @since 3.2
*/
public function __set($name, $value)
{
switch ($name)
{
case 'checked':
$value = (string) $value;
$this->checked = ($value == 'true' || $value == $name || $value == '1');
break;
default:
parent::__set($name, $value);
}
}
/**
* Method to attach a JForm object to the field.
*
* @param SimpleXMLElement $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 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.
*
* @see JFormField::setup()
* @since 3.2
*/
public function setup(SimpleXMLElement $element, $value, $group = null)
{
// Handle the default attribute
$default = (string) $element['default'];
if ($default)
{
$test = $this->form->getValue((string) $element['name'], $group);
$value = ($test == $default) ? $default : null;
}
$return = parent::setup($element, $value, $group);
if ($return)
{
$checked = (string) $this->element['checked'];
$this->checked = ($checked == 'true' || $checked == 'checked' || $checked == '1');
empty($this->value) || $this->checked ? null : $this->checked = true;
}
return $return;
}
/**
* Method to get the field input markup.
* The checked element sets the field to selected.
*
* @return string The field input markup.
*
* @since 1.7.0
*/
protected function getInput()
{
// Initialize some field attributes.
$class = !empty($this->class) ? ' class="' . $this->class . '"' : '';
$disabled = $this->disabled ? ' disabled' : '';
$value = !empty($this->default) ? $this->default : '1';
$required = $this->required ? ' required aria-required="true"' : '';
$autofocus = $this->autofocus ? ' autofocus' : '';
$checked = $this->checked || !empty($this->value) ? ' checked' : '';
// Initialize JavaScript field attributes.
$onclick = !empty($this->onclick) ? ' onclick="' . $this->onclick . '"' : '';
$onchange = !empty($this->onchange) ? ' onchange="' . $this->onchange . '"' : '';
// Including fallback code for HTML5 non supported browsers.
JHtml::_('jquery.framework');
JHtml::_('script', 'system/html5fallback.js', array('version' => 'auto', 'relative' => true, 'conditional' => 'lt IE 9'));
return '<input type="checkbox" name="' . $this->name . '" id="' . $this->id . '" value="'
. htmlspecialchars($value, ENT_COMPAT, 'UTF-8') . '"' . $class . $checked . $disabled . $onclick . $onchange
. $required . $autofocus . ' />';
}
}