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

   1 <?php
   2
   3 namespace Drupal\language\Form;
   4
   5 use Drupal\Core\Entity\EntityInterface;
   6 use Drupal\Core\Form\FormStateInterface;
   7 use Drupal\Core\Language\LanguageManager;
   8 use Drupal\language\Entity\ConfigurableLanguage;
   9
  10 /**
  11  * Controller for language addition forms.
  12  */
  13 class LanguageAddForm extends LanguageFormBase {
  14
  15   /**
  16    * {@inheritdoc}
  17    */
  18   public function getFormId() {
  19     // @todo Remove in favour of base method.
  20     return 'language_admin_add_form';
  21   }
  22
  23   /**
  24    * {@inheritdoc}
  25    */
  26   public function form(array $form, FormStateInterface $form_state) {
  27     $form['#title'] = $this->t('Add language');
  28
  29     $predefined_languages = $this->languageManager->getStandardLanguageListWithoutConfigured();
  30
  31     $predefined_languages['custom'] = $this->t('Custom language...');
  32     $predefined_default = $form_state->getValue('predefined_langcode', key($predefined_languages));
  33     $form['predefined_langcode'] = [
  34       '#type' => 'select',
  35       '#title' => $this->t('Language name'),
  36       '#default_value' => $predefined_default,
  37       '#options' => $predefined_languages,
  38     ];
  39     $form['predefined_submit'] = [
  40       '#type' => 'submit',
  41       '#value' => $this->t('Add language'),
  42       '#name' => 'add_language',
  43       '#limit_validation_errors' => [['predefined_langcode'], ['predefined_submit']],
  44       '#states' => [
  45         'invisible' => [
  46           'select#edit-predefined-langcode' => ['value' => 'custom'],
  47         ],
  48       ],
  49       '#validate' => ['::validatePredefined'],
  50       '#submit' => ['::submitForm', '::save'],
  51       '#button_type' => 'primary',
  52     ];
  53
  54     $custom_language_states_conditions = [
  55       'select#edit-predefined-langcode' => ['value' => 'custom'],
  56     ];
  57     $form['custom_language'] = [
  58       '#type' => 'container',
  59       '#states' => [
  60         'visible' => $custom_language_states_conditions,
  61       ],
  62     ];
  63     $this->commonForm($form['custom_language']);
  64     $form['custom_language']['langcode']['#states'] = [
  65       'required' => $custom_language_states_conditions,
  66     ];
  67     $form['custom_language']['label']['#states'] = [
  68       'required' => $custom_language_states_conditions,
  69     ];
  70     $form['custom_language']['submit'] = [
  71       '#type' => 'submit',
  72       '#value' => $this->t('Add custom language'),
  73       '#name' => 'add_custom_language',
  74       '#validate' => ['::validateCustom'],
  75       '#submit' => ['::submitForm', '::save'],
  76     ];
  77
  78     return $form;
  79   }
  80
  81   /**
  82    * {@inheritdoc}
  83    */
  84   public function save(array $form, FormStateInterface $form_state) {
  85     parent::save($form, $form_state);
  86
  87     $t_args = ['%language' => $this->entity->label(), '%langcode' => $this->entity->id()];
  88     $this->logger('language')->notice('The %language (%langcode) language has been created.', $t_args);
  89     drupal_set_message($this->t('The language %language has been created and can now be used.', $t_args));
  90
  91     if ($this->moduleHandler->moduleExists('block')) {
  92       // Tell the user they have the option to add a language switcher block
  93       // to their theme so they can switch between the languages.
  94       drupal_set_message($this->t('Use one of the language switcher blocks to allow site visitors to switch between languages. You can enable these blocks on the <a href=":block-admin">block administration page</a>.', [':block-admin' => $this->url('block.admin_display')]));
  95     }
  96     $form_state->setRedirectUrl($this->entity->urlInfo('collection'));
  97   }
  98
  99   /**
 100    * {@inheritdoc}
 101    */
 102   public function actions(array $form, FormStateInterface $form_state) {
 103     // No actions needed.
 104     return [];
 105   }
 106
 107   /**
 108    * Validates the language addition form on custom language button.
 109    */
 110   public function validateCustom(array $form, FormStateInterface $form_state) {
 111     if ($form_state->getValue('predefined_langcode') == 'custom') {
 112       $langcode = $form_state->getValue('langcode');
 113       // Reuse the editing form validation routine if we add a custom language.
 114       $this->validateCommon($form['custom_language'], $form_state);
 115
 116       if ($language = $this->languageManager->getLanguage($langcode)) {
 117         $form_state->setErrorByName('langcode', $this->t('The language %language (%langcode) already exists.', ['%language' => $language->getName(), '%langcode' => $langcode]));
 118       }
 119     }
 120     else {
 121       $form_state->setErrorByName('predefined_langcode', $this->t('Use the <em>Add language</em> button to save a predefined language.'));
 122     }
 123   }
 124
 125   /**
 126    * Element specific validator for the Add language button.
 127    */
 128   public function validatePredefined($form, FormStateInterface $form_state) {
 129     $langcode = $form_state->getValue('predefined_langcode');
 130     if ($langcode == 'custom') {
 131       $form_state->setErrorByName('predefined_langcode', $this->t('Fill in the language details and save the language with <em>Add custom language</em>.'));
 132     }
 133     else {
 134       if ($language = $this->languageManager->getLanguage($langcode)) {
 135         $form_state->setErrorByName('predefined_langcode', $this->t('The language %language (%langcode) already exists.', ['%language' => $language->getName(), '%langcode' => $langcode]));
 136       }
 137     }
 138   }
 139
 140   /**
 141    * {@inheritdoc}
 142    */
 143   protected function copyFormValuesToEntity(EntityInterface $entity, array $form, FormStateInterface $form_state) {
 144     $langcode = $form_state->getValue('predefined_langcode');
 145     if ($langcode == 'custom') {
 146       $langcode = $form_state->getValue('langcode');
 147       $label = $form_state->getValue('label');
 148       $direction = $form_state->getValue('direction');
 149     }
 150     else {
 151       $standard_languages = LanguageManager::getStandardLanguageList();
 152       $label = $standard_languages[$langcode][0];
 153       $direction = isset($standard_languages[$langcode][2]) ? $standard_languages[$langcode][2] : ConfigurableLanguage::DIRECTION_LTR;
 154     }
 155     $entity->set('id', $langcode);
 156     $entity->set('label', $label);
 157     $entity->set('direction', $direction);
 158     // There is no weight on the edit form. Fetch all configurable languages
 159     // ordered by weight and set the new language to be placed after them.
 160     $languages = \Drupal::languageManager()->getLanguages(ConfigurableLanguage::STATE_CONFIGURABLE);
 161     $last_language = end($languages);
 162     $entity->setWeight($last_language->getWeight() + 1);
 163   }
 164
 165 }