class Language in Drupal 9

Provides a 'Language' condition.

Plugin annotation

@Condition(
  id = "language",
  label = @Translation("Language"),
  context_definitions = {
    "language" = @ContextDefinition("language", label = @Translation("Language"))
  }
)

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\Core\Executable\ExecutablePluginBase implements CacheableDependencyInterface, ExecutableInterface, ContextAwarePluginInterface uses ContextAwarePluginTrait
      • class \Drupal\Core\Condition\ConditionPluginBase implements ConditionInterface uses ContextAwarePluginAssignmentTrait
        • class \Drupal\language\Plugin\Condition\Language implements ContainerFactoryPluginInterface

43 string references to 'Language'

ckeditor.schema.yml in core/modules/ckeditor/config/schema/ckeditor.schema.yml

core/modules/ckeditor/config/schema/ckeditor.schema.yml

ConfigTestForm::form in core/modules/config/tests/config_test/src/ConfigTestForm.php

Gets the actual form array to be built.

ConfigTranslationController::itemPage in core/modules/config_translation/src/Controller/ConfigTranslationController.php

Language translations overview page for a configuration name.

ContentTranslationController::overview in core/modules/content_translation/src/Controller/ContentTranslationController.php

Builds the translations overview page.

DateFormatFormBase::form in core/modules/system/src/Form/DateFormatFormBase.php

Gets the actual form array to be built.

... See full list

File

core/modules/language/src/Plugin/Condition/Language.php, line 23

Namespace

Drupal\language\Plugin\Condition

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();
      $langcodes_options = [];
      foreach ($languages as $language) {
        $langcodes_options[$language
          ->getId()] = $language
          ->getName();
      }
      $form['langcodes'] = [
        '#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'] = [
        '#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;
    }, []);

    // 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.', [
        '@languages' => $languages,
      ]);
    }
    return t('The language is @languages.', [
      '@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 [
      'langcodes' => [],
    ] + parent::defaultConfiguration();
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ConditionPluginBase::$executableManager	protected	property	The condition manager to proxy execute calls through.
ConditionPluginBase::calculateDependencies	public	function	Calculates dependencies for the configured plugin. Overrides DependentPluginInterface::calculateDependencies
ConditionPluginBase::execute	public	function	Executes the plugin. Overrides ExecutableInterface::execute
ConditionPluginBase::getConfiguration	public	function	Gets this plugin's configuration. Overrides ConfigurableInterface::getConfiguration
ConditionPluginBase::isNegated	public	function	Determines whether condition result will be negated. Overrides ConditionInterface::isNegated
ConditionPluginBase::setConfiguration	public	function	Sets the configuration for this plugin instance. Overrides ConfigurableInterface::setConfiguration
ConditionPluginBase::setExecutableManager	public	function	Sets the executable manager class. Overrides ConditionInterface::setExecutableManager
ConditionPluginBase::validateConfigurationForm	public	function	Form validation handler. Overrides PluginFormInterface::validateConfigurationForm
ContextAwarePluginAssignmentTrait::addContextAssignmentElement	protected	function	Builds a form element for assigning a context to a given slot.
ContextAwarePluginAssignmentTrait::contextHandler	protected	function	Wraps the context handler.
ContextAwarePluginAssignmentTrait::t	abstract protected	function	Ensures the t() method is available.
ContextAwarePluginTrait::$context	protected	property	The data objects representing the context of this plugin.
ContextAwarePluginTrait::$initializedContextConfig	protected	property	Tracks whether the context has been initialized from configuration.
ContextAwarePluginTrait::getCacheContexts	public	function		9
ContextAwarePluginTrait::getCacheMaxAge	public	function		7
ContextAwarePluginTrait::getCacheTags	public	function		4
ContextAwarePluginTrait::getContext	public	function
ContextAwarePluginTrait::getContextDefinition	public	function
ContextAwarePluginTrait::getContextDefinitions	public	function
ContextAwarePluginTrait::getContextMapping	public	function
ContextAwarePluginTrait::getContexts	public	function
ContextAwarePluginTrait::getContextValue	public	function
ContextAwarePluginTrait::getContextValues	public	function
ContextAwarePluginTrait::getPluginDefinition	abstract protected	function		1
ContextAwarePluginTrait::setContext	public	function		1
ContextAwarePluginTrait::setContextMapping	public	function
ContextAwarePluginTrait::setContextValue	public	function
ContextAwarePluginTrait::validateContexts	public	function
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
ExecutablePluginBase::getConfig	public	function	Gets all configuration values.
ExecutablePluginBase::getConfigDefinition	public	function	Gets the definition of a configuration option.
ExecutablePluginBase::getConfigDefinitions	public	function	Gets an array of definitions of available configuration options.
ExecutablePluginBase::setConfig	public	function	Sets the value of a particular configuration option.
Language::$languageManager	protected	property	The Language manager.
Language::buildConfigurationForm	public	function	Form constructor. Overrides ConditionPluginBase::buildConfigurationForm
Language::create	public static	function	Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create
Language::defaultConfiguration	public	function	Gets default configuration for this plugin. Overrides ConditionPluginBase::defaultConfiguration
Language::evaluate	public	function	Evaluates the condition and returns TRUE or FALSE accordingly. Overrides ConditionInterface::evaluate
Language::submitConfigurationForm	public	function	Form submission handler. Overrides ConditionPluginBase::submitConfigurationForm
Language::summary	public	function	Provides a human readable summary of the condition's configuration. Overrides ConditionInterface::summary
Language::__construct	public	function	Creates a new Language instance. Overrides ConditionPluginBase::__construct
MessengerTrait::$messenger	protected	property	The messenger.	27
MessengerTrait::messenger	public	function	Gets the messenger.	27
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	4
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2