Same name and namespace in other branches

1. 11.x core/lib/Drupal/Core/Extension/ThemeInstaller.php \Drupal\Core\Extension\ThemeInstaller::uninstall()
2. 10 core/lib/Drupal/Core/Extension/ThemeInstaller.php \Drupal\Core\Extension\ThemeInstaller::uninstall()
3. 9 core/lib/Drupal/Core/Extension/ThemeInstaller.php \Drupal\Core\Extension\ThemeInstaller::uninstall()
4. 8.9.x core/lib/Drupal/Core/Extension/ThemeInstaller.php \Drupal\Core\Extension\ThemeInstaller::uninstall()

Uninstalls a given list of themes.

Uninstalling a theme removes all related configuration (like blocks) and invokes the 'themes_uninstalled' hook.

Themes are allowed to be uninstalled even when their code has been removed from the filesystem, this is because themes do not allow uninstall hooks to be defined.

Parameters

array $theme_list: The themes to uninstall.

Overrides ThemeInstallerInterface::uninstall

File

core/lib/Drupal/Core/Extension/ThemeInstaller.php, line 247

Class

ThemeInstaller

Manages theme installation/uninstallation.

Namespace

Drupal\Core\Extension

Code

public function uninstall(array $theme_list) {
  // Validate the request without adding sub-themes: callers must list them
  // explicitly, see ::getThemesToUninstall() to resolve them beforehand.
  $theme_list = $this->getThemesToUninstall($theme_list, FALSE);
  $extension_config = $this->configFactory
    ->getEditable('core.extension');
  $installed_themes = $extension_config->get('theme') ?: [];
  $theme_data = $this->themeExtensionList
    ->reset()
    ->getList();
  $this->cssCollectionOptimizer
    ->deleteAll();
  foreach ($theme_list as $key) {
    // The value is not used; the weight is ignored for themes currently.
    $extension_config->clear("theme.{$key}");
    // Remove all configuration belonging to the theme.
    $this->configManager
      ->uninstall('theme', $key);
  }
  $extension_config->save();
  // Refresh theme info.
  $this->themeHandler
    ->reset();
  // Remove themes that were uninstalled from the list.
  $register_themes = array_diff(array_keys($installed_themes), $theme_list);
  // Get list of extensions for the new list of themes.
  $register_themes = array_intersect_key($theme_data, array_flip($register_themes));
  $this->resetSystem($register_themes);
  $this->moduleHandler
    ->invokeAll('themes_uninstalled', [
    $theme_list,
  ]);
}

---