private function delete_theme($drop_files)
{
ThemesManager::uninstall($this->theme_id, $drop_files);
}
public function update_themes()
{
$active_themes_number = 0;
foreach (ThemesManager::get_installed_themes_map() as $id => $theme) {
if ($theme->get_configuration()->get_compatibility() == self::NEW_KERNEL_VERSION) {
$active_themes_number++;
} else {
ThemesManager::uninstall($id);
$this->add_information_to_file('theme ' . $id, 'has been uninstalled because : incompatible with new version');
}
}
if (empty($active_themes_number)) {
ThemesManager::install('base');
$user_accounts_config = UserAccountsConfig::load();
$user_accounts_config->set_default_theme('base');
UserAccountsConfig::save();
}
}