function _bootstrap_get_base_themes

Returns a list of base themes for active or provided theme.

  // Before (including active theme).
  $base_themes = _bootstrap_get_base_themes(NULL, TRUE);

  // Before (excluding active theme).
  $base_themes = _bootstrap_get_base_themes('my_subtheme');

  // After (including active theme).
  use Drupal\bootstrap\Bootstrap;
  $theme = Bootstrap::getTheme();
  $base_themes = array_keys($theme->getAncestry());

  // After (excluding active theme).
  use Drupal\bootstrap\Bootstrap;
  $my_subtheme = Bootstrap::getTheme('my_subtheme');
  $base_themes = array_keys($my_subtheme->getAncestry());
  array_pop($base_themes);

Parameters

string $theme_key: The machine name of the theme to check, if not set the active theme name will be used.

bool $include_theme_key: Whether to append the returned list with $theme_key.

Return value

array An indexed array of base themes.

Source ./deprecated.php (line 304)

function _bootstrap_get_base_themes($theme_key = NULL, $include_theme_key = FALSE) {
  Bootstrap::deprecated();
  $themes = array_keys(Bootstrap::getTheme($theme_key)->getAncestry());
  if (!$include_theme_key) {
    array_pop($themes);
  }
  return $themes;
}