HorizontalTabs.php in Field Group 8
Same filename and directory in other branches
Namespace
Drupal\field_group\ElementFile
src/Element/HorizontalTabs.phpView source
<?php
namespace Drupal\field_group\Element;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\Element\RenderElement;
/**
* Provides a render element for horizontal tabs.
*
* Formats all child details and all non-child details whose #group is
* assigned this element's name as horizontal tabs.
*
* @FormElement("horizontal_tabs")
*/
class HorizontalTabs extends RenderElement {
/**
* {@inheritdoc}
*/
public function getInfo() {
$class = get_class($this);
return array(
'#default_tab' => '',
'#process' => array(
array(
$class,
'processHorizontalTabs',
),
),
'#theme_wrappers' => array(
'horizontal_tabs',
),
);
}
/**
* Creates a group formatted as horizontal tabs.
*
* @param array $element
* An associative array containing the properties and children of the
* details element.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* The current state of the form.
* @param bool $on_form
* Are the tabs rendered on a form or not.
*
* @return array
* The processed element.
*/
public static function processHorizontalTabs(&$element, FormStateInterface $form_state, $on_form = TRUE) {
// Inject a new details as child, so that form_process_details() processes
// this details element like any other details.
$element['group'] = array(
'#type' => 'details',
'#theme_wrappers' => array(),
'#parents' => $element['#parents'],
);
// Add an invisible label for accessibility.
if (!isset($element['#title'])) {
$element['#title'] = t('Horizontal Tabs');
$element['#title_display'] = 'invisible';
}
// Add required JavaScript and Stylesheet.
$element['#attached']['library'][] = 'field_group/element.horizontal_tabs';
// Only add forms library on forms.
if ($on_form) {
$element['#attached']['library'][] = 'core/drupal.form';
}
// The JavaScript stores the currently selected tab in this hidden
// field so that the active tab can be restored the next time the
// form is rendered, e.g. on preview pages or when form validation
// fails.
$name = implode('__', $element['#parents']);
if ($form_state
->hasValue($name . '__active_tab')) {
$element['#default_tab'] = $form_state
->getValue($name . '__active_tab');
}
$element[$name . '__active_tab'] = array(
'#type' => 'hidden',
'#default_value' => $element['#default_tab'],
'#attributes' => array(
'class' => array(
'horizontal-tabs-active-tab',
),
),
);
return $element;
}
}
Classes
Name![]() |
Description |
---|---|
HorizontalTabs | Provides a render element for horizontal tabs. |