NegotiationLanguageSelectionPageForm.php in Language Selection Page 8.2

Namespace

Drupal\language_selection_page\Form

File

src/Form/NegotiationLanguageSelectionPageForm.php

<?php

declare (strict_types=1);
namespace Drupal\language_selection_page\Form;

use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
use Drupal\Core\Executable\ExecutableManagerInterface;
use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Configure the Language Selection Page language negotiation method.
 */
final class NegotiationLanguageSelectionPageForm extends ConfigFormBase implements ContainerInjectionInterface {

  /**
   * The variable containing the conditions configuration.
   *
   * @var \Drupal\Core\Config\Config
   */
  protected $config;

  /**
   * The Language Selection Page condition plugin manager.
   *
   * @var \Drupal\Core\Executable\ExecutableManagerInterface
   */
  protected $languageSelectionPageConditionManager;

  /**
   * NegotiationLanguageSelectionPageForm constructor.
   *
   * @param \Drupal\Core\Executable\ExecutableManagerInterface $plugin_manager
   *   The plugin manager.
   */
  public function __construct(ExecutableManagerInterface $plugin_manager) {
    parent::__construct($this
      ->configFactory());
    $this->languageSelectionPageConditionManager = $plugin_manager;
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $this->config = $this
      ->config('language_selection_page.negotiation');
    $manager = $this->languageSelectionPageConditionManager;
    foreach ($manager
      ->getDefinitions() as $def) {
      $condition_plugin = $manager
        ->createInstance($def['id']);
      $form_state
        ->set([
        'conditions',
        $condition_plugin
          ->getPluginId(),
      ], $condition_plugin);
      $condition_plugin
        ->setConfiguration($condition_plugin
        ->getConfiguration() + (array) $this->config
        ->get());
      $condition_form = [];
      $condition_form['#markup'] = $condition_plugin
        ->getDescription();
      $condition_form += $condition_plugin
        ->buildConfigurationForm([], $form_state);
      if (!empty($condition_form[$condition_plugin
        ->getPluginId()])) {
        $condition_form['#type'] = 'details';
        $condition_form['#open'] = TRUE;
        $condition_form['#title'] = $condition_plugin
          ->getName();
        $condition_form['#weight'] = $condition_plugin
          ->getWeight();
        $form['conditions'][$condition_plugin
          ->getPluginId()] = $condition_form;
      }
    }
    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('plugin.manager.language_selection_page_condition'));
  }

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

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    parent::submitForm($form, $form_state);

    /** @var \Drupal\language_selection_page\LanguageSelectionPageConditionInterface $condition */
    foreach ($form_state
      ->get([
      'conditions',
    ]) as $condition) {
      $condition
        ->submitConfigurationForm($form, $form_state);
      if (\array_key_exists($condition
        ->getPluginId(), $condition
        ->getConfiguration())) {
        $this->config
          ->set($condition
          ->getPluginId(), $condition
          ->getConfiguration()[$condition
          ->getPluginId()]);
      }
    }
    $this->config
      ->save();

    /** @var \Drupal\language_selection_page\LanguageSelectionPageConditionInterface $condition */
    foreach ($form_state
      ->get([
      'conditions',
    ]) as $condition) {
      $condition
        ->postConfigSave($form, $form_state);
    }

    // Redirect to the language negotiation page on submit (previous Drupal 7
    // behavior, and intended behavior for other language negotiation settings
    // forms in Drupal 8 core).
    $form_state
      ->setRedirect('language.negotiation');
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    parent::validateForm($form, $form_state);

    /** @var \Drupal\language_selection_page\LanguageSelectionPageConditionInterface $condition */
    foreach ($form_state
      ->get([
      'conditions',
    ]) as $condition) {
      $condition
        ->validateConfigurationForm($form, $form_state);
    }
  }

  /**
   * {@inheritdoc}
   */
  protected function getEditableConfigNames() {
    return [
      'language_selection_page.negotiation',
    ];
  }

}

Classes

Name	Description
NegotiationLanguageSelectionPageForm	Configure the Language Selection Page language negotiation method.