www.aleph1.co.uk Git - yaffs-website/blob - web/core/modules/language/src/Form/LanguageFormBase.php

   1 <?php
   2
   3 namespace Drupal\language\Form;
   4
   5 use Drupal\Component\Utility\Html;
   6 use Drupal\Core\Entity\EntityForm;
   7 use Drupal\Core\Form\FormStateInterface;
   8 use Drupal\Core\Language\LanguageInterface;
   9 use Drupal\language\ConfigurableLanguageManagerInterface;
  10 use Symfony\Component\DependencyInjection\ContainerInterface;
  11
  12 /**
  13  * Base form for language add and edit forms.
  14  */
  15 abstract class LanguageFormBase extends EntityForm {
  16
  17   /**
  18    * The configurable language manager.
  19    *
  20    * @var \Drupal\language\ConfigurableLanguageManagerInterface
  21    */
  22   protected $languageManager;
  23
  24   /**
  25    * Constructs a ContentEntityForm object.
  26    *
  27    * @param \Drupal\language\ConfigurableLanguageManagerInterface $language_manager
  28    *   The configurable language manager.
  29    */
  30   public function __construct(ConfigurableLanguageManagerInterface $language_manager) {
  31     $this->languageManager = $language_manager;
  32   }
  33
  34   /**
  35    * {@inheritdoc}
  36    */
  37   public static function create(ContainerInterface $container) {
  38     return new static(
  39       $container->get('language_manager')
  40     );
  41   }
  42
  43   /**
  44    * Common elements of the language addition and editing form.
  45    */
  46   public function commonForm(array &$form) {
  47     /* @var $language \Drupal\language\ConfigurableLanguageInterface */
  48     $language = $this->entity;
  49     if ($language->getId()) {
  50       $form['langcode_view'] = [
  51         '#type' => 'item',
  52         '#title' => $this->t('Language code'),
  53         '#markup' => $language->id()
  54       ];
  55       $form['langcode'] = [
  56         '#type' => 'value',
  57         '#value' => $language->id()
  58       ];
  59     }
  60     else {
  61       $form['langcode'] = [
  62         '#type' => 'textfield',
  63         '#title' => $this->t('Language code'),
  64         '#maxlength' => 12,
  65         '#required' => TRUE,
  66         '#default_value' => '',
  67         '#disabled' => FALSE,
  68         '#description' => $this->t('Use language codes as <a href=":w3ctags">defined by the W3C</a> for interoperability. <em>Examples: "en", "en-gb" and "zh-hant".</em>', [':w3ctags' => 'http://www.w3.org/International/articles/language-tags/']),
  69       ];
  70     }
  71     $form['label'] = [
  72       '#type' => 'textfield',
  73       '#title' => $this->t('Language name'),
  74       '#maxlength' => 64,
  75       '#default_value' => $language->label(),
  76       '#required' => TRUE,
  77     ];
  78     $form['direction'] = [
  79       '#type' => 'radios',
  80       '#title' => $this->t('Direction'),
  81       '#required' => TRUE,
  82       '#description' => $this->t('Direction that text in this language is presented.'),
  83       '#default_value' => $language->getDirection(),
  84       '#options' => [
  85         LanguageInterface::DIRECTION_LTR => $this->t('Left to right'),
  86         LanguageInterface::DIRECTION_RTL => $this->t('Right to left'),
  87       ],
  88     ];
  89
  90     return $form;
  91   }
  92
  93   /**
  94    * Validates the language editing element.
  95    */
  96   public function validateCommon(array $form, FormStateInterface $form_state) {
  97     // Ensure sane field values for langcode and name.
  98     if (!isset($form['langcode_view']) && !preg_match('@^[a-zA-Z]{1,8}(-[a-zA-Z0-9]{1,8})*$@', $form_state->getValue('langcode'))) {
  99       $form_state->setErrorByName('langcode', $this->t('%field must be a valid language tag as <a href=":url">defined by the W3C</a>.', [
 100         '%field' => $form['langcode']['#title'],
 101         ':url' => 'http://www.w3.org/International/articles/language-tags/',
 102       ]));
 103     }
 104     if ($form_state->getValue('label') != Html::escape($form_state->getValue('label'))) {
 105       $form_state->setErrorByName('label', $this->t('%field cannot contain any markup.', ['%field' => $form['label']['#title']]));
 106     }
 107   }
 108
 109 }