function BlockTheme::transform

Overrides ProcessPluginBase::transform

File

core/modules/block/src/Plugin/migrate/process/BlockTheme.php, line 70

Class

BlockTheme

Namespace

Code

public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
  [
    $theme,
    $default_theme,
    $admin_theme,
  ] = $value;
  // If the source theme exists on the destination, we're good.
  if (isset($this->themes[$theme])) {
    return $theme;
  }
  // If the source block is assigned to a region in the source default theme,
  // then assign it to the destination default theme.
  if (strtolower($theme) == strtolower($default_theme)) {
    return $this->themeConfig
      ->get('default');
  }
  // If the source block is assigned to a region in the source admin theme,
  // then assign it to the destination admin theme.
  if ($admin_theme && strtolower($theme) == strtolower($admin_theme)) {
    return $this->themeConfig
      ->get('admin');
  }
  // We couldn't map it to a D8 theme so just return the incoming theme.
  return $theme;
}