/**
* {@inheritdoc}
*/
public function validateConfigurationForm(array &$form, FormStateInterface $form_state)
{
parent::validateConfigurationForm($form, $form_state);
// Validate layout settings.
if ($form_state->hasValue('layout_settings')) {
$layout = $this->layoutManager->createInstance($form_state->getValue('layout'), $this->configuration['layout_settings']);
list($layout_settings_form, $layout_settings_form_state) = $this->getLayoutSettingsForm($form, $form_state);
$layout->validateConfigurationForm($layout_settings_form, $layout_settings_form_state);
// Save the layout plugin for later (so we don't have to instantiate again
// on submit.
$form_state->set('layout_plugin', $layout);
}
}
/**
* {@inheritdoc}
*/
public function setConfiguration(array $configuration)
{
if (empty($configuration['uuid'])) {
$configuration['uuid'] = $this->uuidGenerator()->generate();
}
// Make sure blocks are mapped to valid regions, and if not, map them to the
// first available region. This is a work-around the fact that we're not
// totally in control of the block placement UI from page_manager.
// @todo Replace after https://www.drupal.org/node/2550879
if (!empty($configuration['layout']) && !empty($configuration['blocks'])) {
$layout_definition = $this->layoutManager->getDefinition($configuration['layout']);
$valid_regions = $layout_definition['regions'];
$first_region = array_keys($valid_regions)[0];
foreach ($configuration['blocks'] as &$block) {
if (!isset($valid_regions[$block['region']])) {
$block['region'] = $first_region;
}
}
}
return parent::setConfiguration($configuration);
}