3 namespace Drupal\field_test\Plugin\Field\FieldWidget;
5 use Drupal\Core\Field\FieldItemListInterface;
6 use Drupal\Core\Field\WidgetBase;
7 use Drupal\Core\Form\FormStateInterface;
8 use Symfony\Component\Validator\ConstraintViolationInterface;
11 * Plugin implementation of the 'test_field_widget' widget.
14 * id = "test_field_widget",
15 * label = @Translation("Test widget"),
18 * "hidden_test_field",
19 * "test_field_with_preconfigured_options"
24 class TestFieldWidget extends WidgetBase {
29 public static function defaultSettings() {
31 'test_widget_setting' => 'dummy test string',
32 'role' => 'anonymous',
33 'role2' => 'anonymous',
34 ] + parent::defaultSettings();
40 public function settingsForm(array $form, FormStateInterface $form_state) {
41 $element['test_widget_setting'] = [
42 '#type' => 'textfield',
43 '#title' => t('Field test field widget setting'),
44 '#description' => t('A dummy form element to simulate field widget setting.'),
45 '#default_value' => $this->getSetting('test_widget_setting'),
54 public function settingsSummary() {
56 $summary[] = t('@setting: @value', ['@setting' => 'test_widget_setting', '@value' => $this->getSetting('test_widget_setting')]);
63 public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
65 '#type' => 'textfield',
66 '#default_value' => isset($items[$delta]->value) ? $items[$delta]->value : '',
68 return ['value' => $element];
74 public function errorElement(array $element, ConstraintViolationInterface $violation, array $form, FormStateInterface $form_state) {
75 return $element['value'];
81 public function calculateDependencies() {
82 $dependencies = parent::calculateDependencies();
84 foreach (['role', 'role2'] as $setting) {
85 if (!empty($role_id = $this->getSetting($setting))) {
86 // Create a dependency on the role config entity referenced in settings.
87 $dependencies['config'][] = "user.role.$role_id";
97 public function onDependencyRemoval(array $dependencies) {
98 $changed = parent::onDependencyRemoval($dependencies);
100 // Only the setting 'role' is resolved here. When the dependency related to
101 // this setting is removed, is expected that the widget component will be
102 // update accordingly in the display entity. The 'role2' setting is
103 // deliberately left out from being updated. When the dependency
104 // corresponding to this setting is removed, is expected that the widget
105 // component will be disabled in the display entity.
106 if (!empty($role_id = $this->getSetting('role'))) {
107 if (!empty($dependencies['config']["user.role.$role_id"])) {
108 $this->setSetting('role', 'anonymous');