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<?php
/**
* @package Joomla.Libraries
* @subpackage Form
*
* @copyright Copyright (C) 2005 - 2009 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('JPATH_PLATFORM') or die;
/**
* Form Field class for the Joomla Framework.
*
* @since 2.5
*/
class JFormFieldCaptcha extends JFormField
{
/**
* The field type.
*
* @var string
*/
protected $type = 'Captcha';
/**
* Method to get certain otherwise inaccessible properties from the form field object.
*
* @param string $name The property name for which to the the value.
*
* @return mixed The property value or null.
*
* @since 3.2
*/
public function __get($name)
{
switch ($name)
{
case 'plugin':
case 'namespace':
return $this->$name;
}
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 the the value.
* @param mixed $value The value of the property.
*
* @return void
*
* @since 3.2
*/
public function __set($name, $value)
{
switch ($name)
{
case 'plugin':
case 'namespace':
$this->$name = (string) $value;
break;
default:
parent::__set($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 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 2.5
*/
public function setup(SimpleXMLElement $element, $value, $group = null)
{
$result = parent::setup($element, $value, $group);
$plugin = $this->element['plugin'] ?
(string) $this->element['plugin'] :
JFactory::getApplication()->getParams()->get('captcha', JFactory::getConfig()->get('captcha'));
$this->plugin = $plugin;
if ($plugin === 0 || $plugin === '0' || $plugin === '' || $plugin === null)
{
$this->hidden = true;
}
else
{
// Force field to be required. There's no reason to have a captcha if it is not required.
// Obs: Don't put required="required" in the xml file, you just need to have validate="captcha"
$this->required = true;
if (strpos($this->class, 'required') === false)
{
$this->class = $this->class . ' required';
}
}
$this->namespace = $this->element['namespace'] ? (string) $this->element['namespace'] : $this->form->getName();
return $result;
}
/**
* Method to get the field input.
*
* @return string The field input.
*
* @since 2.5
*/
protected function getInput()
{
if ($this->hidden)
{
return '';
}
else
{
if (($captcha = JCaptcha::getInstance($this->plugin, array('namespace' => $this->namespace))) == null)
{
return '';
}
}
return $captcha->display($this->name, $this->id, $this->class);
}
}