/**
* {@inheritdoc}
*/
public function submitForm(array &$form, FormStateInterface $form_state)
{
// Return early if there are any errors.
if ($form_state->hasAnyErrors()) {
return $form;
}
$panels_display = $this->panelsDisplay;
// Submit the layout form.
$layout_form_state = (new FormState())->setValues($form_state->getValue('settings', []));
$this->layout->submitConfigurationForm($form, $layout_form_state);
$layout_config = $this->layout->getConfiguration();
// Shift our blocks to the first available region. The IPE can control
// re-assigning blocks in a smarter way.
$region_definitions = $this->layout->getRegionDefinitions();
$first_region = reset(array_keys($region_definitions));
// For each block, set the region to match the new layout.
foreach ($panels_display->getRegionAssignments() as $region => $region_assignment) {
/** @var \Drupal\Core\Block\BlockPluginInterface $block */
foreach ($region_assignment as $block_id => $block) {
$block_config = $block->getConfiguration();
// If the new layout does not have a region with the same name, use the
// first available region.
if (!isset($region_definitions[$block_config['region']])) {
$block_config['region'] = $first_region;
$panels_display->updateBlock($block_id, $block_config);
}
}
}
// Have our panels display use the new layout.
$this->panelsDisplay->setLayout($this->layout, $layout_config);
// Update tempstore.
$this->tempStore->set($panels_display->id(), $panels_display->getConfiguration());
$region_data = [];
$region_content = [];
// Compile region content and metadata.
$regions = $panels_display->getRegionAssignments();
foreach ($regions as $id => $label) {
// Wrap the region with a class/data attribute that our app can use.
$region_name = Html::getClass("block-region-{$id}");
$region_content[$id] = ['#prefix' => '<div class="' . $region_name . '" data-region-name="' . $id . '">', '#suffix' => '</div>'];
// Format region metadata.
$region_data[] = ['name' => $id, 'label' => $label];
}
$build = $panels_display->getLayout()->build($region_content);
$form['build'] = $build;
$data = ['id' => $this->layout->getPluginId(), 'label' => $layout_config['label'], 'current' => TRUE, 'html' => $this->renderer->render($build), 'regions' => $region_data];
// Add Block metadata and HTML as a drupalSetting.
$form['#attached']['drupalSettings']['panels_ipe']['updated_layout'] = $data;
return $form;
}