CSSCaptchaSettingsForm.php in CAPTCHA Pack 8

Namespace

Drupal\css_captcha\Form

File

css_captcha/src/Form/CSSCaptchaSettingsForm.php

<?php

namespace Drupal\css_captcha\Form;

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

/**
 * CSS CAPTCHA settings form.
 */
class CSSCaptchaSettingsForm extends ConfigFormBase {

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

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

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

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $form = [];
    $config = $this
      ->config('css_captcha.settings');
    $form['css_captcha_allowed_characters'] = [
      '#type' => 'textfield',
      '#title' => $this
        ->t('Characters to use in the code'),
      '#default_value' => $config
        ->get('css_captcha_allowed_characters'),
      '#required' => TRUE,
    ];
    $form['css_captcha_code_length'] = [
      '#type' => 'select',
      '#title' => $this
        ->t('Code length'),
      '#options' => array_combine([
        4,
        5,
        6,
        7,
        8,
        9,
        10,
      ], [
        4,
        5,
        6,
        7,
        8,
        9,
        10,
      ]),
      '#default_value' => $config
        ->get('css_captcha_code_length'),
    ];
    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    $css_captcha_allowed_characters = $form_state
      ->getValue('css_captcha_allowed_characters');

    // Checking if there are spaces among allowed characters.
    if (preg_match('/\\s/', $css_captcha_allowed_characters)) {
      $form_state
        ->setErrorByName('css_captcha_allowed_characters', $this
        ->t('The list of characters to use should not contain spaces.'));
    }

    // Checking if number of entered symbols not less than length of code.
    if (strlen($css_captcha_allowed_characters) < $form_state
      ->getValue('css_captcha_code_length')) {
      $form_state
        ->setErrorByName('css_captcha_allowed_characters', $this
        ->t('Number of allowed characters should be at least as code length.'));
    }

    // Checking for duplicated characters among allowed characters.
    if ($css_captcha_allowed_characters !== implode('', array_unique(str_split($css_captcha_allowed_characters)))) {
      $form_state
        ->setErrorByName('css_captcha_allowed_characters', $this
        ->t('Please remove duplicated characters.'));
    }
    parent::validateForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $this
      ->config('css_captcha.settings')
      ->set('css_captcha_allowed_characters', $form_state
      ->getValue('css_captcha_allowed_characters'))
      ->set('css_captcha_code_length', $form_state
      ->getValue('css_captcha_code_length'))
      ->save();
    parent::SubmitForm($form, $form_state);
  }

}

Classes

Name	Description
CSSCaptchaSettingsForm	CSS CAPTCHA settings form.