Default options form that provides the label widget that all fields should have.
Overrides FieldPluginBase::buildOptionsForm
public function buildOptionsForm(&$form, &$form_state) {
$form['type'] = array(
'#type' => 'radios',
'#title' => t('Display type'),
'#options' => array(
'ul' => t('Unordered list'),
'ol' => t('Ordered list'),
'separator' => t('Simple separator'),
),
'#default_value' => $this->options['type'],
);
$form['separator'] = array(
'#type' => 'textfield',
'#title' => t('Separator'),
'#default_value' => $this->options['separator'],
'#states' => array(
'visible' => array(
':input[name="options[type]"]' => array(
'value' => 'separator',
),
),
),
);
parent::buildOptionsForm($form, $form_state);
}