
| Current Path : /var/www/html/recommended-project/web/core/lib/Drupal/Core/Render/Element/ |
Linux ift1.ift-informatik.de 5.4.0-216-generic #236-Ubuntu SMP Fri Apr 11 19:53:21 UTC 2025 x86_64 |
| Current File : /var/www/html/recommended-project/web/core/lib/Drupal/Core/Render/Element/Weight.php |
<?php
namespace Drupal\Core\Render\Element;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\Attribute\FormElement;
/**
* Provides a form element for input of a weight.
*
* Weights are integers used to indicate ordering, with larger numbers later in
* the order.
*
* Properties:
* - #delta: The range of possible weight values used. A delta of 10 would
* indicate possible weight values between -10 and 10.
*
* Usage example:
* @code
* $form['weight'] = [
* '#type' => 'weight',
* '#title' => $this->t('Weight'),
* '#default_value' => $edit['weight'],
* '#delta' => 10,
* ];
* @endcode
*/
#[FormElement('weight')]
class Weight extends FormElementBase {
/**
* {@inheritdoc}
*/
public function getInfo() {
$class = static::class;
return [
'#input' => TRUE,
'#delta' => 10,
'#default_value' => 0,
'#process' => [
[$class, 'processWeight'],
[$class, 'processAjaxForm'],
],
];
}
/**
* Expands a weight element into a select/number element.
*/
public static function processWeight(&$element, FormStateInterface $form_state, &$complete_form) {
// If the number of options is small enough, use a select field. Otherwise,
// use a number field.
$type = $element['#delta'] <= \Drupal::config('system.site')->get('weight_select_max') ? 'select' : 'number';
$element = array_merge($element, \Drupal::service('element_info')->getInfo($type));
$element['#is_weight'] = TRUE;
if ($type === 'select') {
$weights = [];
for ($n = (-1 * $element['#delta']); $n <= $element['#delta']; $n++) {
$weights[$n] = $n;
}
$default_value = (int) $element['#default_value'];
if (!isset($weights[$default_value])) {
$weights[$default_value] = $default_value;
ksort($weights);
}
$element['#options'] = $weights;
}
else {
// Use a field big enough to fit most weights.
$element['#size'] = 10;
}
return $element;
}
}