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- <?php
- namespace Drupal\Core\Field;
- use Drupal\Component\Plugin\Factory\DefaultFactory;
- use Drupal\Core\Cache\CacheBackendInterface;
- use Drupal\Core\Extension\ModuleHandlerInterface;
- use Drupal\Core\Plugin\DefaultPluginManager;
- /**
- * Plugin type manager for field widgets.
- *
- * @ingroup field_widget
- */
- class WidgetPluginManager extends DefaultPluginManager {
- /**
- * The field type manager to define field.
- *
- * @var \Drupal\Core\Field\FieldTypePluginManagerInterface
- */
- protected $fieldTypeManager;
- /**
- * An array of widget options for each field type.
- *
- * @var array
- */
- protected $widgetOptions;
- /**
- * Constructs a WidgetPluginManager object.
- *
- * @param \Traversable $namespaces
- * An object that implements \Traversable which contains the root paths
- * keyed by the corresponding namespace to look for plugin implementations.
- * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
- * Cache backend instance to use.
- * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
- * The module handler.
- * @param \Drupal\Core\Field\FieldTypePluginManagerInterface $field_type_manager
- * The 'field type' plugin manager.
- */
- public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler, FieldTypePluginManagerInterface $field_type_manager) {
- parent::__construct('Plugin/Field/FieldWidget', $namespaces, $module_handler, 'Drupal\Core\Field\WidgetInterface', 'Drupal\Core\Field\Annotation\FieldWidget');
- $this->setCacheBackend($cache_backend, 'field_widget_types_plugins');
- $this->alterInfo('field_widget_info');
- $this->fieldTypeManager = $field_type_manager;
- }
- /**
- * Overrides PluginManagerBase::getInstance().
- *
- * @param array $options
- * An array with the following key/value pairs:
- * - field_definition: (FieldDefinitionInterface) The field definition.
- * - form_mode: (string) The form mode.
- * - prepare: (bool, optional) Whether default values should get merged in
- * the 'configuration' array. Defaults to TRUE.
- * - configuration: (array) the configuration for the widget. The
- * following key value pairs are allowed, and are all optional if
- * 'prepare' is TRUE:
- * - type: (string) The widget to use. Defaults to the
- * 'default_widget' for the field type. The default widget will also be
- * used if the requested widget is not available.
- * - settings: (array) Settings specific to the widget. Each setting
- * defaults to the default value specified in the widget definition.
- * - third_party_settings: (array) Settings provided by other extensions
- * through hook_field_formatter_third_party_settings_form().
- *
- * @return \Drupal\Core\Field\WidgetInterface|null
- * A Widget object or NULL when plugin is not found.
- */
- public function getInstance(array $options) {
- // Fill in defaults for missing properties.
- $options += [
- 'configuration' => [],
- 'prepare' => TRUE,
- ];
- $configuration = $options['configuration'];
- $field_definition = $options['field_definition'];
- $field_type = $field_definition->getType();
- // Fill in default configuration if needed.
- if ($options['prepare']) {
- $configuration = $this->prepareConfiguration($field_type, $configuration);
- }
- $plugin_id = $configuration['type'];
- // Switch back to default widget if either:
- // - the configuration does not specify a widget class
- // - the field type is not allowed for the widget
- // - the widget is not applicable to the field definition.
- $definition = $this->getDefinition($configuration['type'], FALSE);
- if (!isset($definition['class']) || !in_array($field_type, $definition['field_types']) || !$definition['class']::isApplicable($field_definition)) {
- // Grab the default widget for the field type.
- $field_type_definition = $this->fieldTypeManager->getDefinition($field_type);
- if (empty($field_type_definition['default_widget'])) {
- return NULL;
- }
- $plugin_id = $field_type_definition['default_widget'];
- }
- $configuration += [
- 'field_definition' => $field_definition,
- ];
- return $this->createInstance($plugin_id, $configuration);
- }
- /**
- * {@inheritdoc}
- */
- public function createInstance($plugin_id, array $configuration = []) {
- $plugin_definition = $this->getDefinition($plugin_id);
- $plugin_class = DefaultFactory::getPluginClass($plugin_id, $plugin_definition);
- // If the plugin provides a factory method, pass the container to it.
- if (is_subclass_of($plugin_class, 'Drupal\Core\Plugin\ContainerFactoryPluginInterface')) {
- return $plugin_class::create(\Drupal::getContainer(), $configuration, $plugin_id, $plugin_definition);
- }
- return new $plugin_class($plugin_id, $plugin_definition, $configuration['field_definition'], $configuration['settings'], $configuration['third_party_settings']);
- }
- /**
- * Merges default values for widget configuration.
- *
- * @param string $field_type
- * The field type.
- * @param array $configuration
- * An array of widget configuration.
- *
- * @return array
- * The display properties with defaults added.
- */
- public function prepareConfiguration($field_type, array $configuration) {
- // Fill in defaults for missing properties.
- $configuration += [
- 'settings' => [],
- 'third_party_settings' => [],
- ];
- // If no widget is specified, use the default widget.
- if (!isset($configuration['type'])) {
- $field_type = $this->fieldTypeManager->getDefinition($field_type);
- $configuration['type'] = isset($field_type['default_widget']) ? $field_type['default_widget'] : NULL;
- }
- // Filter out unknown settings, and fill in defaults for missing settings.
- $default_settings = $this->getDefaultSettings($configuration['type']);
- $configuration['settings'] = array_intersect_key($configuration['settings'], $default_settings) + $default_settings;
- return $configuration;
- }
- /**
- * Returns an array of widget type options for a field type.
- *
- * @param string|null $field_type
- * (optional) The name of a field type, or NULL to retrieve all widget
- * options. Defaults to NULL.
- *
- * @return array
- * If no field type is provided, returns a nested array of all widget types,
- * keyed by field type human name.
- */
- public function getOptions($field_type = NULL) {
- if (!isset($this->widgetOptions)) {
- $options = [];
- $field_types = $this->fieldTypeManager->getDefinitions();
- $widget_types = $this->getDefinitions();
- uasort($widget_types, ['Drupal\Component\Utility\SortArray', 'sortByWeightElement']);
- foreach ($widget_types as $name => $widget_type) {
- foreach ($widget_type['field_types'] as $widget_field_type) {
- // Check that the field type exists.
- if (isset($field_types[$widget_field_type])) {
- $options[$widget_field_type][$name] = $widget_type['label'];
- }
- }
- }
- $this->widgetOptions = $options;
- }
- if (isset($field_type)) {
- return !empty($this->widgetOptions[$field_type]) ? $this->widgetOptions[$field_type] : [];
- }
- return $this->widgetOptions;
- }
- /**
- * Returns the default settings of a field widget.
- *
- * @param string $type
- * A field widget type name.
- *
- * @return array
- * The widget type's default settings, as provided by the plugin
- * definition, or an empty array if type or settings are undefined.
- */
- public function getDefaultSettings($type) {
- $plugin_definition = $this->getDefinition($type, FALSE);
- if (!empty($plugin_definition['class'])) {
- $plugin_class = DefaultFactory::getPluginClass($type, $plugin_definition);
- return $plugin_class::defaultSettings();
- }
- return [];
- }
- }
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