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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\language\Plugin\Condition\Language. | |
| */ | |
| namespace Drupal\language\Plugin\Condition; | |
| use Drupal\Core\Condition\ConditionPluginBase; | |
| use Drupal\Core\Form\FormStateInterface; | |
| use Drupal\Core\Language\LanguageInterface; | |
| use Drupal\Core\Language\LanguageManagerInterface; | |
| use Drupal\Core\Plugin\ContainerFactoryPluginInterface; | |
| use Symfony\Component\DependencyInjection\ContainerInterface; | |
| /** | |
| * Provides a 'Language' condition. | |
| * | |
| * @Condition( | |
| * id = "language", | |
| * label = @Translation("Language"), | |
| * context = { | |
| * "language" = @ContextDefinition("language", label = @Translation("Language")) | |
| * } | |
| * ) | |
| * | |
| */ | |
| class Language extends ConditionPluginBase implements ContainerFactoryPluginInterface { | |
| /** | |
| * The Language manager. | |
| * | |
| * @var \Drupal\Core\Language\LanguageManagerInterface | |
| */ | |
| protected $languageManager; | |
| /** | |
| * Creates a new Language instance. | |
| * | |
| * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager | |
| * The language manager. | |
| * @param array $configuration | |
| * The plugin configuration, i.e. an array with configuration values keyed | |
| * by configuration option name. The special key 'context' may be used to | |
| * initialize the defined contexts by setting it to an array of context | |
| * values keyed by context names. | |
| * @param string $plugin_id | |
| * The plugin_id for the plugin instance. | |
| * @param mixed $plugin_definition | |
| * The plugin implementation definition. | |
| */ | |
| public function __construct(LanguageManagerInterface $language_manager, array $configuration, $plugin_id, $plugin_definition) { | |
| parent::__construct($configuration, $plugin_id, $plugin_definition); | |
| $this->languageManager = $language_manager; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) { | |
| return new static( | |
| $container->get('language_manager'), | |
| $configuration, | |
| $plugin_id, | |
| $plugin_definition | |
| ); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function buildConfigurationForm(array $form, FormStateInterface $form_state) { | |
| if ($this->languageManager->isMultilingual()) { | |
| // Fetch languages. | |
| $languages = $this->languageManager->getLanguages(); | |
| $langcodes_options = array(); | |
| foreach ($languages as $language) { | |
| $langcodes_options[$language->getId()] = $language->getName(); | |
| } | |
| $form['langcodes'] = array( | |
| '#type' => 'checkboxes', | |
| '#title' => $this->t('Language selection'), | |
| '#default_value' => $this->configuration['langcodes'], | |
| '#options' => $langcodes_options, | |
| '#description' => $this->t('Select languages to enforce. If none are selected, all languages will be allowed.'), | |
| ); | |
| } | |
| else { | |
| $form['langcodes'] = array( | |
| '#type' => 'value', | |
| '#default_value' => $this->configuration['langcodes'], | |
| ); | |
| } | |
| return parent::buildConfigurationForm($form, $form_state); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function submitConfigurationForm(array &$form, FormStateInterface $form_state) { | |
| $this->configuration['langcodes'] = array_filter($form_state->getValue('langcodes')); | |
| parent::submitConfigurationForm($form, $form_state); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function summary() { | |
| $language_list = $this->languageManager->getLanguages(LanguageInterface::STATE_ALL); | |
| $selected = $this->configuration['langcodes']; | |
| // Reduce the language list to an array of language names. | |
| $language_names = array_reduce($language_list, function(&$result, $item) use ($selected) { | |
| // If the current item of the $language_list array is one of the selected | |
| // languages, add it to the $results array. | |
| if (!empty($selected[$item->getId()])) { | |
| $result[$item->getId()] = $item->getName(); | |
| } | |
| return $result; | |
| }, array()); | |
| // If we have more than one language selected, separate them by commas. | |
| if (count($this->configuration['langcodes']) > 1) { | |
| $languages = implode(', ', $language_names); | |
| } | |
| else { | |
| // If we have just one language just grab the only present value. | |
| $languages = array_pop($language_names); | |
| } | |
| if (!empty($this->configuration['negate'])) { | |
| return t('The language is not @languages.', array('@languages' => $languages)); | |
| } | |
| return t('The language is @languages.', array('@languages' => $languages)); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function evaluate() { | |
| if (empty($this->configuration['langcodes']) && !$this->isNegated()) { | |
| return TRUE; | |
| } | |
| $language = $this->getContextValue('language'); | |
| // Language visibility settings. | |
| return !empty($this->configuration['langcodes'][$language->getId()]); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function defaultConfiguration() { | |
| return array('langcodes' => array()) + parent::defaultConfiguration(); | |
| } | |
| } |