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<?php
/**
* @package Joomla.Platform
* @subpackage Form
*
* @copyright (C) 2009 Open Source Matters, Inc. <https://www.joomla.org>
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* Form Field class for the Joomla Platform.
* Supports a generic list of options.
*
* @since 1.7.0
*/
class JFormFieldList extends JFormField
{
/**
* The form field type.
*
* @var string
* @since 1.7.0
*/
protected $type = 'List';
/**
* Method to get the field input markup for a generic list.
* Use the multiple attribute to enable multiselect.
*
* @return string The field input markup.
*
* @since 3.7.0
*/
protected function getInput()
{
$html = array();
$attr = '';
// Initialize some field attributes.
$attr .= !empty($this->class) ? ' class="' . $this->class . '"' : '';
$attr .= !empty($this->size) ? ' size="' . $this->size . '"' : '';
$attr .= $this->multiple ? ' multiple' : '';
$attr .= $this->required ? ' required aria-required="true"' : '';
$attr .= $this->autofocus ? ' autofocus' : '';
// To avoid user's confusion, readonly="true" should imply disabled="true".
if ((string) $this->readonly == '1' || (string) $this->readonly == 'true' || (string) $this->disabled == '1'|| (string) $this->disabled == 'true')
{
$attr .= ' disabled="disabled"';
}
// Initialize JavaScript field attributes.
$attr .= $this->onchange ? ' onchange="' . $this->onchange . '"' : '';
// Get the field options.
$options = (array) $this->getOptions();
// Create a read-only list (no name) with hidden input(s) to store the value(s).
if ((string) $this->readonly == '1' || (string) $this->readonly == 'true')
{
$html[] = JHtml::_('select.genericlist', $options, '', trim($attr), 'value', 'text', $this->value, $this->id);
// E.g. form field type tag sends $this->value as array
if ($this->multiple && is_array($this->value))
{
if (!count($this->value))
{
$this->value[] = '';
}
foreach ($this->value as $value)
{
$html[] = '<input type="hidden" name="' . $this->name . '" value="' . htmlspecialchars($value, ENT_COMPAT, 'UTF-8') . '"/>';
}
}
else
{
$html[] = '<input type="hidden" name="' . $this->name . '" value="' . htmlspecialchars($this->value, ENT_COMPAT, 'UTF-8') . '"/>';
}
}
else
// Create a regular list passing the arguments in an array.
{
$listoptions = array();
$listoptions['option.key'] = 'value';
$listoptions['option.text'] = 'text';
$listoptions['list.select'] = $this->value;
$listoptions['id'] = $this->id;
$listoptions['list.translate'] = false;
$listoptions['option.attr'] = 'optionattr';
$listoptions['list.attr'] = trim($attr);
$html[] = JHtml::_('select.genericlist', $options, $this->name, $listoptions);
}
return implode($html);
}
/**
* Method to get the field options.
*
* @return array The field option objects.
*
* @since 3.7.0
*/
protected function getOptions()
{
$fieldname = preg_replace('/[^a-zA-Z0-9_\-]/', '_', $this->fieldname);
$options = array();
foreach ($this->element->xpath('option') as $option)
{
// Filter requirements
if ($requires = explode(',', (string) $option['requires']))
{
// Requires multilanguage
if (in_array('multilanguage', $requires) && !JLanguageMultilang::isEnabled())
{
continue;
}
// Requires associations
if (in_array('associations', $requires) && !JLanguageAssociations::isEnabled())
{
continue;
}
// Requires adminlanguage
if (in_array('adminlanguage', $requires) && !JModuleHelper::isAdminMultilang())
{
continue;
}
// Requires vote plugin
if (in_array('vote', $requires) && !JPluginHelper::isEnabled('content', 'vote'))
{
continue;
}
}
$value = (string) $option['value'];
$text = trim((string) $option) != '' ? trim((string) $option) : $value;
$disabled = (string) $option['disabled'];
$disabled = ($disabled == 'true' || $disabled == 'disabled' || $disabled == '1');
$disabled = $disabled || ($this->readonly && $value != $this->value);
$checked = (string) $option['checked'];
$checked = ($checked == 'true' || $checked == 'checked' || $checked == '1');
$selected = (string) $option['selected'];
$selected = ($selected == 'true' || $selected == 'selected' || $selected == '1');
$tmp = array(
'value' => $value,
'text' => JText::alt($text, $fieldname),
'disable' => $disabled,
'class' => (string) $option['class'],
'selected' => ($checked || $selected),
'checked' => ($checked || $selected),
);
// Set some event handler attributes. But really, should be using unobtrusive js.
$tmp['onclick'] = (string) $option['onclick'];
$tmp['onchange'] = (string) $option['onchange'];
if ((string) $option['showon'])
{
$tmp['optionattr'] = " data-showon='" .
json_encode(
JFormHelper::parseShowOnConditions((string) $option['showon'], $this->formControl, $this->group)
)
. "'";
}
// Add the option object to the result set.
$options[] = (object) $tmp;
}
if ($this->element['useglobal'])
{
$tmp = new stdClass;
$tmp->value = '';
$tmp->text = JText::_('JGLOBAL_USE_GLOBAL');
$component = JFactory::getApplication()->input->getCmd('option');
// Get correct component for menu items
if ($component == 'com_menus')
{
$link = $this->form->getData()->get('link');
$uri = new JUri($link);
$component = $uri->getVar('option', 'com_menus');
}
$params = JComponentHelper::getParams($component);
$value = $params->get($this->fieldname);
// Try with global configuration
if (is_null($value))
{
$value = JFactory::getConfig()->get($this->fieldname);
}
// Try with menu configuration
if (is_null($value) && JFactory::getApplication()->input->getCmd('option') == 'com_menus')
{
$value = JComponentHelper::getParams('com_menus')->get($this->fieldname);
}
if (!is_null($value))
{
$value = (string) $value;
foreach ($options as $option)
{
if ($option->value === $value)
{
$value = $option->text;
break;
}
}
$tmp->text = JText::sprintf('JGLOBAL_USE_GLOBAL_VALUE', $value);
}
array_unshift($options, $tmp);
}
reset($options);
return $options;
}
/**
* Method to add an option to the list field.
*
* @param string $text Text/Language variable of the option.
* @param array $attributes Array of attributes ('name' => 'value' format)
*
* @return JFormFieldList For chaining.
*
* @since 3.7.0
*/
public function addOption($text, $attributes = array())
{
if ($text && $this->element instanceof SimpleXMLElement)
{
$child = $this->element->addChild('option', $text);
foreach ($attributes as $name => $value)
{
$child->addAttribute($name, $value);
}
}
return $this;
}
/**
* Method to get certain otherwise inaccessible properties from the form field object.
*
* @param string $name The property name for which to get the value.
*
* @return mixed The property value or null.
*
* @since 3.7.0
*/
public function __get($name)
{
if ($name == 'options')
{
return $this->getOptions();
}
return parent::__get($name);
}
}