toolshed-8.x-1.x-dev/src/Element/HtmlButton.php

<?php

namespace Drupal\toolshed\Element;

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\Element;
use Drupal\Core\Render\Element\Button;

/**
 * Create a button element that is a HTML button element.
 *
 * @FormElement("html_button")
 */
class HtmlButton extends Button {

  /**
   * {@inheritdoc}
   */
  public function getInfo(): array {
    $info = [
      '#theme_wrappers' => ['html_button'],
      '#executes_submit_callback' => TRUE,
    ] + parent::getInfo();

    return $info;
  }

  /**
   * {@inheritdoc}
   */
  public static function processButton(&$element, FormStateInterface $form_state, &$complete_form): array {
    $element = parent::processButton($element, $form_state, $complete_form);

    // Pose as a button in order to get normal AJAX and other behaviors.
    $element['#type'] = 'button';
    return $element;
  }

  /**
   * Prepares a #type 'button' render element for input.html.twig.
   *
   * @param mixed $element
   *   An associative array containing the properties of the element.
   *   Properties used: #attributes, #button_type, #name, #value. The
   *   #button_type property accepts any value, though core themes have CSS that
   *   styles the following button_types appropriately: 'primary', 'danger'.
   *
   * @return array
   *   The $element with prepared variables ready for input.html.twig.
   */
  public static function preRenderButton($element): array {
    Element::setAttributes($element, ['id']);

    // If there was no value involved, skip adding the name and value.
    if (!empty($element['#value'])) {
      $element['#attributes']['name'] = $element['#name'];
      $element['#attributes']['value'] = $element['#value'];
    }

    if ($element['#executes_submit_callback']) {
      $element['#attributes']['class'][] = 'js-form-submit';
      $element['#attributes']['class'][] = 'form-submit';
    }

    if (!empty($element['#attributes']['disabled'])) {
      $element['#attributes']['class'][] = 'is-disabled';
    }

    return $element;
  }

}