/**
* {@inheritdoc}
*/
public function validateConfigurationForm(array &$form, FormStateInterface $form_state)
{
parent::validateConfigurationForm($form, $form_state);
if ($form_state->isValueEmpty('width') && $form_state->isValueEmpty('height')) {
$form_state->setErrorByName('data', $this->t('Width and height can not both be blank.'));
}
}
/**
* {@inheritdoc}
*/
public function validateConfigurationForm(array &$form, FormStateInterface $form_state)
{
parent::validateConfigurationForm($form, $form_state);
if (empty($form_state['values']['width']) && empty($form_state['values']['height'])) {
form_set_error('data', $form_state, $this->t('Width and height can not both be blank.'));
}
}
