class LanguageCombination in Translation Management Tool 8
Plugin implementation of the 'tmgmt_language_combination' field type.
Plugin annotation
@FieldType(
  id = "tmgmt_language_combination",
  label = @Translation("Language Combination"),
  description = @Translation("Allows the definition of language combinations (e.g. 'From english to german')."),
  default_widget = "tmgmt_language_combination_default",
  default_formatter = "tmgmt_language_combination_default",
  constraints = {"TMGMTLanguageCombination" = {}}
)
  Hierarchy
- class \Drupal\Core\TypedData\TypedData implements PluginInspectionInterface, TypedDataInterface uses DependencySerializationTrait, StringTranslationTrait, TypedDataTrait
- class \Drupal\Core\TypedData\Plugin\DataType\Map implements \Drupal\Core\TypedData\Plugin\DataType\IteratorAggregate, ComplexDataInterface
- class \Drupal\Core\Field\FieldItemBase implements FieldItemInterface
- class \Drupal\tmgmt_language_combination\Plugin\Field\FieldType\LanguageCombination
 
 
 - class \Drupal\Core\Field\FieldItemBase implements FieldItemInterface
 
 - class \Drupal\Core\TypedData\Plugin\DataType\Map implements \Drupal\Core\TypedData\Plugin\DataType\IteratorAggregate, ComplexDataInterface
 
Expanded class hierarchy of LanguageCombination
File
- translators/
tmgmt_local/ skills/ src/ Plugin/ Field/ FieldType/ LanguageCombination.php, line 22  
Namespace
Drupal\tmgmt_language_combination\Plugin\Field\FieldTypeView source
class LanguageCombination extends FieldItemBase {
  /**
   * {@inheritdoc}
   */
  public static function propertyDefinitions(FieldStorageDefinitionInterface $field) {
    $property_definitions['language_from'] = DataDefinition::create('string')
      ->setLabel(t('From language'));
    $property_definitions['language_to'] = DataDefinition::create('string')
      ->setLabel(t('To language'));
    return $property_definitions;
  }
  /**
   * {@inheritdoc}
   */
  public static function schema(FieldStorageDefinitionInterface $field) {
    return array(
      'columns' => array(
        'language_from' => array(
          'description' => 'The langcode of the language from which the user is able to translate.',
          'type' => 'varchar',
          'length' => 10,
        ),
        'language_to' => array(
          'description' => 'The langcode of the language to which the user is able to translate.',
          'type' => 'varchar',
          'length' => 10,
        ),
      ),
      'indexes' => array(
        'language' => array(
          'language_from',
          'language_to',
        ),
      ),
    );
  }
  /**
   * {@inheritdoc}
   */
  public function isEmpty() {
    if (empty($this->language_from) || empty($this->language_to) || $this->language_from == '_none' || $this->language_to == '_none') {
      return TRUE;
    }
    return FALSE;
  }
  /**
   * {@inheritdoc}
   */
  public function preSave() {
    parent::preSave();
    // In case the skill languages is not know to the system, install them.
    $languages = \Drupal::languageManager()
      ->getLanguages();
    if (!isset($languages[$this->language_from])) {
      $language = ConfigurableLanguage::createFromLangcode($this->language_from);
      $language
        ->save();
    }
    if (!isset($languages[$this->language_to])) {
      $language = ConfigurableLanguage::createFromLangcode($this->language_to);
      $language
        ->save();
    }
  }
}Members
| 
            Name | 
                  Modifiers | Type | Description | Overrides | 
|---|---|---|---|---|
| 
            DependencySerializationTrait:: | 
                  protected | property | An array of entity type IDs keyed by the property name of their storages. | |
| 
            DependencySerializationTrait:: | 
                  protected | property | An array of service IDs keyed by property name used for serialization. | |
| 
            DependencySerializationTrait:: | 
                  public | function | 1 | |
| 
            DependencySerializationTrait:: | 
                  public | function | 2 | |
| 
            FieldItemBase:: | 
                  public static | function | 
            Calculates dependencies for field items. Overrides FieldItemInterface:: | 
                  2 | 
| 
            FieldItemBase:: | 
                  public static | function | 
            Calculates dependencies for field items on the storage level. Overrides FieldItemInterface:: | 
                  1 | 
| 
            FieldItemBase:: | 
                  public static | function | 
            Defines the field-level settings for this plugin. Overrides FieldItemInterface:: | 
                  7 | 
| 
            FieldItemBase:: | 
                  public static | function | 
            Defines the storage-level settings for this plugin. Overrides FieldItemInterface:: | 
                  10 | 
| 
            FieldItemBase:: | 
                  public | function | 
            Defines custom delete behavior for field values. Overrides FieldItemInterface:: | 
                  2 | 
| 
            FieldItemBase:: | 
                  public | function | 
            Defines custom revision delete behavior for field values. Overrides FieldItemInterface:: | 
                  |
| 
            FieldItemBase:: | 
                  public | function | 
            Returns a form for the field-level settings. Overrides FieldItemInterface:: | 
                  7 | 
| 
            FieldItemBase:: | 
                  public static | function | 
            Returns a settings array in the field type's canonical representation. Overrides FieldItemInterface:: | 
                  1 | 
| 
            FieldItemBase:: | 
                  public static | function | 
            Returns a settings array that can be stored as a configuration value. Overrides FieldItemInterface:: | 
                  1 | 
| 
            FieldItemBase:: | 
                  public static | function | 
            Generates placeholder field values. Overrides FieldItemInterface:: | 
                  18 | 
| 
            FieldItemBase:: | 
                  public | function | 
            Gets the entity that field belongs to. Overrides FieldItemInterface:: | 
                  |
| 
            FieldItemBase:: | 
                  public | function | 
            Gets the field definition. Overrides FieldItemInterface:: | 
                  |
| 
            FieldItemBase:: | 
                  public | function | 
            Gets the langcode of the field values held in the object. Overrides FieldItemInterface:: | 
                  |
| 
            FieldItemBase:: | 
                  protected | function | Returns the value of a field setting. | |
| 
            FieldItemBase:: | 
                  protected | function | Returns the array of field settings. | |
| 
            FieldItemBase:: | 
                  public static | function | 
            Returns the name of the main property, if any. Overrides FieldItemInterface:: | 
                  8 | 
| 
            FieldItemBase:: | 
                  public static | function | 
            Informs the plugin that a dependency of the field will be deleted. Overrides FieldItemInterface:: | 
                  1 | 
| 
            FieldItemBase:: | 
                  public | function | 
            Defines custom post-save behavior for field values. Overrides FieldItemInterface:: | 
                  2 | 
| 
            FieldItemBase:: | 
                  public | function | 
            Sets the data value. Overrides Map:: | 
                  4 | 
| 
            FieldItemBase:: | 
                  public | function | 
            Returns a form for the storage-level settings. Overrides FieldItemInterface:: | 
                  8 | 
| 
            FieldItemBase:: | 
                  public static | function | 
            Returns a settings array in the field type's canonical representation. Overrides FieldItemInterface:: | 
                  2 | 
| 
            FieldItemBase:: | 
                  public static | function | 
            Returns a settings array that can be stored as a configuration value. Overrides FieldItemInterface:: | 
                  2 | 
| 
            FieldItemBase:: | 
                  public | function | 
            Returns a renderable array for a single field item. Overrides FieldItemInterface:: | 
                  |
| 
            FieldItemBase:: | 
                  protected | function | 
            Different to the parent Map class, we avoid creating property objects as
far as possible in order to optimize performance. Thus we just update
$this->values if no property object has been created yet. Overrides Map:: | 
                  |
| 
            FieldItemBase:: | 
                  public | function | 
            Constructs a TypedData object given its definition and context. Overrides TypedData:: | 
                  1 | 
| 
            FieldItemBase:: | 
                  public | function | 
            Magic method: Gets a property value. Overrides FieldItemInterface:: | 
                  2 | 
| 
            FieldItemBase:: | 
                  public | function | 
            Magic method: Determines whether a property is set. Overrides FieldItemInterface:: | 
                  |
| 
            FieldItemBase:: | 
                  public | function | 
            Magic method: Sets a property value. Overrides FieldItemInterface:: | 
                  1 | 
| 
            FieldItemBase:: | 
                  public | function | 
            Magic method: Unsets a property. Overrides FieldItemInterface:: | 
                  |
| 
            LanguageCombination:: | 
                  public | function | 
            Determines whether the data structure is empty. Overrides Map:: | 
                  |
| 
            LanguageCombination:: | 
                  public | function | 
            Defines custom presave behavior for field values. Overrides FieldItemBase:: | 
                  |
| 
            LanguageCombination:: | 
                  public static | function | 
            Defines field item properties. Overrides FieldItemInterface:: | 
                  |
| 
            LanguageCombination:: | 
                  public static | function | 
            Returns the schema for the field. Overrides FieldItemInterface:: | 
                  |
| 
            Map:: | 
                  protected | property | 
            The data definition. Overrides TypedData:: | 
                  |
| 
            Map:: | 
                  protected | property | The array of properties. | |
| 
            Map:: | 
                  protected | property | An array of values for the contained properties. | |
| 
            Map:: | 
                  public | function | 
            Applies the default value. Overrides TypedData:: | 
                  4 | 
| 
            Map:: | 
                  public | function | 
            Gets a property object. Overrides ComplexDataInterface:: | 
                  |
| 
            Map:: | 
                  public | function | ||
| 
            Map:: | 
                  public | function | 
            Gets an array of property objects. Overrides ComplexDataInterface:: | 
                  |
| 
            Map:: | 
                  public | function | 
            Returns a string representation of the data. Overrides TypedData:: | 
                  |
| 
            Map:: | 
                  public | function | 
            Gets the data value. Overrides TypedData:: | 
                  1 | 
| 
            Map:: | 
                  public | function | 
            Overrides TraversableTypedDataInterface:: | 
                  4 | 
| 
            Map:: | 
                  public | function | 
            Sets a property value. Overrides ComplexDataInterface:: | 
                  |
| 
            Map:: | 
                  public | function | 
            Returns an array of all property values. Overrides ComplexDataInterface:: | 
                  1 | 
| 
            Map:: | 
                  public | function | Magic method: Implements a deep clone. | |
| 
            StringTranslationTrait:: | 
                  protected | property | The string translation service. | 1 | 
| 
            StringTranslationTrait:: | 
                  protected | function | Formats a string containing a count of items. | |
| 
            StringTranslationTrait:: | 
                  protected | function | Returns the number of plurals supported by a given language. | |
| 
            StringTranslationTrait:: | 
                  protected | function | Gets the string translation service. | |
| 
            StringTranslationTrait:: | 
                  public | function | Sets the string translation service to use. | 2 | 
| 
            StringTranslationTrait:: | 
                  protected | function | Translates a string to the current language or to a given language. | |
| 
            TypedData:: | 
                  protected | property | The property name. | |
| 
            TypedData:: | 
                  protected | property | The parent typed data object. | |
| 
            TypedData:: | 
                  public static | function | 
            Constructs a TypedData object given its definition and context. Overrides TypedDataInterface:: | 
                  |
| 
            TypedData:: | 
                  public | function | 
            Gets a list of validation constraints. Overrides TypedDataInterface:: | 
                  9 | 
| 
            TypedData:: | 
                  public | function | 
            Gets the data definition. Overrides TypedDataInterface:: | 
                  |
| 
            TypedData:: | 
                  public | function | 
            Returns the name of a property or item. Overrides TypedDataInterface:: | 
                  |
| 
            TypedData:: | 
                  public | function | 
            Returns the parent data structure; i.e. either complex data or a list. Overrides TypedDataInterface:: | 
                  |
| 
            TypedData:: | 
                  public | function | 
            Gets the definition of the plugin implementation. Overrides PluginInspectionInterface:: | 
                  |
| 
            TypedData:: | 
                  public | function | 
            Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface:: | 
                  |
| 
            TypedData:: | 
                  public | function | 
            Returns the property path of the data. Overrides TypedDataInterface:: | 
                  |
| 
            TypedData:: | 
                  public | function | 
            Returns the root of the typed data tree. Overrides TypedDataInterface:: | 
                  |
| 
            TypedData:: | 
                  public | function | 
            Sets the context of a property or item via a context aware parent. Overrides TypedDataInterface:: | 
                  |
| 
            TypedData:: | 
                  public | function | 
            Validates the currently set data value. Overrides TypedDataInterface:: | 
                  |
| 
            TypedDataTrait:: | 
                  protected | property | The typed data manager used for creating the data types. | |
| 
            TypedDataTrait:: | 
                  public | function | Gets the typed data manager. | 2 | 
| 
            TypedDataTrait:: | 
                  public | function | Sets the typed data manager. | 2 |