function CompositeFormElementTrait::preRenderCompositeFormElement

Adds form element theming to an element if its title or description is set.

This is used as a pre render function for checkboxes and radios.

File

core/lib/Drupal/Core/Render/Element/CompositeFormElementTrait.php, line 18

Class

CompositeFormElementTrait

Provides a trait for radios, checkboxes, and similar composite form elements.

Namespace

Code

public static function preRenderCompositeFormElement($element) {
    // Set the element's title attribute to show #title as a tooltip, if needed.
    if (isset($element['#title']) && $element['#title_display'] == 'attribute') {
        $element['#attributes']['title'] = $element['#title'];
        if (!empty($element['#required'])) {
            // Append an indication that this field is required.
            $element['#attributes']['title'] .= ' (' . t('Required') . ')';
        }
    }
    if (isset($element['#title']) || isset($element['#description'])) {
        // @see #type 'fieldgroup'
        $element['#attributes']['id'] = $element['#id'] . '--wrapper';
        $element['#theme_wrappers'][] = 'fieldset';
        $element['#attributes']['class'][] = 'fieldgroup';
        $element['#attributes']['class'][] = 'form-composite';
    }
    return $element;
}