bibcite-8.x-1.x-dev/modules/bibcite_entity/src/Form/ReferenceSettings.php

<?php

namespace Drupal\bibcite_entity\Form;

use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;

/**
 * Common Reference settings.
 */
class ReferenceSettings extends ConfigFormBase {

  /**
   * {@inheritdoc}
   */
  protected function getEditableConfigNames() {
    return ['bibcite_entity.reference.settings'];
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'bibcite_entity_reference_settings';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $config_modes = $this->configFactory->listAll('core.entity_view_mode.bibcite_reference');
    $modes = ['default' => $this->t('Default')];
    foreach ($config_modes as $config_name) {
      $mode = $this->configFactory->getEditable($config_name);
      // Get substring 'view_mode_name' from 'bibcite_reference.view_mode_name'
      // id string. String 'bibcite_reference.' contains 18 symbols.
      $name = substr($mode->get('id'), 18);
      $modes[$name] = $this->t($mode->get('label'));
    }
    $config = $this->config('bibcite_entity.reference.settings');

    $form['view_mode'] = [
      '#type' => 'fieldset',
      '#title' => $this->t('Reference page view mode'),
      '#tree' => TRUE,
    ];
    $form['view_mode']['reference_page_view_mode'] = [
      '#type' => 'select',
      '#options' => $modes,
      '#title' => $this->t('Reference page view mode'),
      '#description' => $this->t('View mode which is used for rendering reference entities on their own pages.'),
      '#default_value' => $config->get('display_override.reference_page_view_mode'),
    ];

    $form['ui_override'] = [
      '#type' => 'fieldset',
      '#title' => $this->t('Interface override'),
      '#tree' => TRUE,
    ];
    $form['ui_override']['enable_form_override'] = [
      '#type' => 'checkbox',
      '#title' => $this->t('Override entity forms'),
      '#description' => $this->t("Regroup all base fields of Reference entity to vertical tabs. You can use it if you don't want to configure form display view."),
      '#default_value' => $config->get('ui_override.enable_form_override'),
    ];

    $form['citekey'] = [
      '#type' => 'fieldset',
      '#title' => $this->t('Citation key'),
      '#tree' => TRUE,
    ];
    $form['citekey']['citekey_pattern'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Citation key pattern'),
      '#description' => $this->t('Pattern for citation key automatic generation if value is not set.'),
      '#maxlength' => 255,
      '#default_value' => $config->get('citekey.pattern'),
    ];
    $form['citekey']['token_help'] = [
      '#theme' => 'token_tree_link',
      '#token_types' => ['bibcite_reference'],
      '#global_types' => TRUE,
    ];

    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $config = $this->config('bibcite_entity.reference.settings');
    $config->set('display_override.reference_page_view_mode', $form_state->getValue([
      'view_mode',
      'reference_page_view_mode',
    ]));
    $config->set('ui_override.enable_form_override', (bool) $form_state->getValue([
      'ui_override',
      'enable_form_override',
    ]));
    $config->set('citekey.pattern', $form_state->getValue([
      'citekey',
      'citekey_pattern',
    ]));
    $config->save();

    parent::submitForm($form, $form_state);
  }

}