/**
* Set the default theme.
*
* @param \Symfony\Component\HttpFoundation\Request $request
* A request object containing a theme name.
*
* @return \Symfony\Component\HttpFoundation\RedirectResponse
* Redirects back to the appearance admin page.
*
* @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
* Throws access denied when no theme is set in the request.
*/
public function setDefaultTheme(Request $request)
{
$config = $this->config('system.theme');
$theme = $request->query->get('theme');
if (isset($theme)) {
// Get current list of themes.
$themes = $this->themeHandler->listInfo();
// Check if the specified theme is one recognized by the system.
// Or try to install the theme.
if (isset($themes[$theme]) || $this->themeHandler->install(array($theme))) {
$themes = $this->themeHandler->listInfo();
// Set the default theme.
$config->set('default', $theme)->save();
$this->routeBuilderIndicator->setRebuildNeeded();
// The status message depends on whether an admin theme is currently in
// use: a value of 0 means the admin theme is set to be the default
// theme.
$admin_theme = $config->get('admin');
if ($admin_theme != 0 && $admin_theme != $theme) {
drupal_set_message($this->t('Please note that the administration theme is still set to the %admin_theme theme; consequently, the theme on this page remains unchanged. All non-administrative sections of the site, however, will show the selected %selected_theme theme by default.', array('%admin_theme' => $themes[$admin_theme]->info['name'], '%selected_theme' => $themes[$theme]->info['name'])));
} else {
drupal_set_message($this->t('%theme is now the default theme.', array('%theme' => $themes[$theme]->info['name'])));
}
} else {
drupal_set_message($this->t('The %theme theme was not found.', array('%theme' => $theme)), 'error');
}
return $this->redirect('system.themes_page');
}
throw new AccessDeniedHttpException();
}
/**
* Resets some other systems like rebuilding the route information or caches.
*/
protected function resetSystem()
{
if ($this->routeBuilderIndicator) {
$this->routeBuilderIndicator->setRebuildNeeded();
}
$this->systemListReset();
// @todo It feels wrong to have the requirement to clear the local tasks
// cache here.
Cache::deleteTags(array('local_task'));
$this->themeRegistryRebuild();
}
/**
* {@inheritdoc}
*/
public function setRebuildNeeded()
{
$this->routeBuilderIndicator->setRebuildNeeded();
}
