/**
* {@inheritdoc}
*/
public function buildForm(array $form, FormStateInterface $form_state, PageInterface $page = NULL, $display_variant_id = NULL)
{
$this->page = $page;
$this->displayVariant = $this->prepareDisplayVariant($display_variant_id);
if ($this->displayVariant instanceof PageAwareVariantInterface) {
$this->displayVariant->setExecutable($this->page->getExecutable());
}
// Allow the display variant to add to the form.
$form['display_variant'] = $this->displayVariant->buildConfigurationForm([], $form_state);
$form['display_variant']['#tree'] = TRUE;
$form['actions'] = ['#type' => 'actions'];
$form['actions']['submit'] = ['#type' => 'submit', '#value' => $this->submitText(), '#button_type' => 'primary'];
return $form;
}
