laces_base-1.0.x-dev/src/Plugin/Layout/FourColumn.php

<?php

namespace Drupal\laces_base\Plugin\Layout;

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Layout\LayoutDefault;
use Drupal\Core\Plugin\PluginFormInterface;

/**
 * Configurable two column layout plugin class.
 *
 * @internal
 *   Plugin classes are internal.
 */
class FourColumn extends LayoutDefault implements PluginFormInterface {

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration(): array {
    $configuration = parent::defaultConfiguration();
    return $configuration + [
        'container_type' => 'Default',
      ];
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state): array {
    $configuration = $this->getConfiguration();
    $form['container_type'] = [
      '#type' => 'select',
      '#title' => $this->t('Container breakpoint'),
      '#default_value' => $configuration['container_type'],
      '#options' => [
        'container' => 'Default',
        'container-sm' => 'Small',
        'container-md' => 'Medium',
        'container-lg' => 'Large',
        'container-xl' => 'Extra large',
        'container-xxl' => 'Extra extra large',
        'container-fluid' => 'Fluid',
        'container-edge' => 'Edge to edge',
      ],
      '#description' => $this->t('Choose the container breakpoint for this layout.'),
    ];
    return parent::buildConfigurationForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
    // any additional form validation that is required
  }

  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
    parent::submitConfigurationForm($form, $form_state);
    $this->configuration['container_type'] = $form_state->getValue('container_type');
  }

  /**
   * {@inheritdoc}
   */
  public function build(array $regions): array {
    $build = parent::build($regions);
    $build['#attributes']['class'][] = $this->configuration['container_type'];
    $build['#row_attributes']['class'][] = 'row';
    if ($this->configuration['container_type'] == 'container-edge') {
      $build['#row_attributes']['class'][] = 'g-0';
    }
    $build['first']['#attributes']['class'][] = 'col';
    $build['second']['#attributes']['class'][] = 'col';
    $build['third']['#attributes']['class'][] = 'col';
    $build['fourth']['#attributes']['class'][] = 'col';
    return $build;
  }

}