Plugin implementation of the 'test_field_widget' widget.
@Plugin(
id = "test_field_widget",
module = "field_test",
label = @Translation("Test widget"),
field_types = {
"test_field",
"hidden_test_field"
},
settings = {
"test_widget_setting" = "dummy test string"
}
)
Expanded class hierarchy of TestFieldWidget
class TestFieldWidget extends WidgetBase {
/**
* Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::settingsForm().
*/
public function settingsForm(array $form, array &$form_state) {
$element['test_widget_setting'] = array(
'#type' => 'textfield',
'#title' => t('Field test field widget setting'),
'#description' => t('A dummy form element to simulate field widget setting.'),
'#default_value' => $this
->getSetting('test_widget_setting'),
'#required' => FALSE,
);
return $element;
}
/**
* Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
*/
public function formElement(array $items, $delta, array $element, $langcode, array &$form, array &$form_state) {
$element += array(
'#type' => 'textfield',
'#default_value' => isset($items[$delta]['value']) ? $items[$delta]['value'] : '',
);
return array(
'value' => $element,
);
}
/**
* Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::errorElement().
*/
public function errorElement(array $element, array $error, array $form, array &$form_state) {
return $element['value'];
}
}