Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\system\Controller;
Chris@0: 
Chris@0: use Drupal\Core\Config\ConfigFactoryInterface;
Chris@0: use Drupal\Core\Config\PreExistingConfigException;
Chris@0: use Drupal\Core\Config\UnmetDependenciesException;
Chris@0: use Drupal\Core\Controller\ControllerBase;
Chris@0: use Drupal\Core\Extension\ThemeHandlerInterface;
Chris@0: use Symfony\Component\DependencyInjection\ContainerInterface;
Chris@0: use Symfony\Component\HttpFoundation\Request;
Chris@0: use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
Chris@0: 
Chris@0: /**
Chris@0:  * Controller for theme handling.
Chris@0:  */
Chris@0: class ThemeController extends ControllerBase {
Chris@0: 
Chris@0:   /**
Chris@0:    * The theme handler service.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Extension\ThemeHandlerInterface
Chris@0:    */
Chris@0:   protected $themeHandler;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new ThemeController.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
Chris@0:    *   The theme handler.
Chris@0:    * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
Chris@0:    *   The config factory.
Chris@0:    */
Chris@0:   public function __construct(ThemeHandlerInterface $theme_handler, ConfigFactoryInterface $config_factory) {
Chris@0:     $this->themeHandler = $theme_handler;
Chris@0:     $this->configFactory = $config_factory;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function create(ContainerInterface $container) {
Chris@0:     return new static(
Chris@0:       $container->get('theme_handler'),
Chris@0:       $container->get('config.factory')
Chris@0:     );
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Uninstalls a theme.
Chris@0:    *
Chris@0:    * @param \Symfony\Component\HttpFoundation\Request $request
Chris@0:    *   A request object containing a theme name and a valid token.
Chris@0:    *
Chris@0:    * @return \Symfony\Component\HttpFoundation\RedirectResponse
Chris@0:    *   Redirects back to the appearance admin page.
Chris@0:    *
Chris@0:    * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
Chris@0:    *   Throws access denied when no theme or token is set in the request or when
Chris@0:    *   the token is invalid.
Chris@0:    */
Chris@0:   public function uninstall(Request $request) {
Chris@0:     $theme = $request->query->get('theme');
Chris@0:     $config = $this->config('system.theme');
Chris@0: 
Chris@0:     if (isset($theme)) {
Chris@0:       // Get current list of themes.
Chris@0:       $themes = $this->themeHandler->listInfo();
Chris@0: 
Chris@0:       // Check if the specified theme is one recognized by the system.
Chris@0:       if (!empty($themes[$theme])) {
Chris@0:         // Do not uninstall the default or admin theme.
Chris@0:         if ($theme === $config->get('default') || $theme === $config->get('admin')) {
Chris@17:           $this->messenger()->addError($this->t('%theme is the default theme and cannot be uninstalled.', ['%theme' => $themes[$theme]->info['name']]));
Chris@0:         }
Chris@0:         else {
Chris@0:           $this->themeHandler->uninstall([$theme]);
Chris@17:           $this->messenger()->addStatus($this->t('The %theme theme has been uninstalled.', ['%theme' => $themes[$theme]->info['name']]));
Chris@0:         }
Chris@0:       }
Chris@0:       else {
Chris@17:         $this->messenger()->addError($this->t('The %theme theme was not found.', ['%theme' => $theme]));
Chris@0:       }
Chris@0: 
Chris@0:       return $this->redirect('system.themes_page');
Chris@0:     }
Chris@0: 
Chris@0:     throw new AccessDeniedHttpException();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Installs a theme.
Chris@0:    *
Chris@0:    * @param \Symfony\Component\HttpFoundation\Request $request
Chris@0:    *   A request object containing a theme name and a valid token.
Chris@0:    *
Chris@0:    * @return \Symfony\Component\HttpFoundation\RedirectResponse
Chris@0:    *   Redirects back to the appearance admin page.
Chris@0:    *
Chris@0:    * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
Chris@0:    *   Throws access denied when no theme or token is set in the request or when
Chris@0:    *   the token is invalid.
Chris@0:    */
Chris@0:   public function install(Request $request) {
Chris@0:     $theme = $request->query->get('theme');
Chris@0: 
Chris@0:     if (isset($theme)) {
Chris@0:       try {
Chris@0:         if ($this->themeHandler->install([$theme])) {
Chris@0:           $themes = $this->themeHandler->listInfo();
Chris@17:           $this->messenger()->addStatus($this->t('The %theme theme has been installed.', ['%theme' => $themes[$theme]->info['name']]));
Chris@0:         }
Chris@0:         else {
Chris@17:           $this->messenger()->addError($this->t('The %theme theme was not found.', ['%theme' => $theme]));
Chris@0:         }
Chris@0:       }
Chris@0:       catch (PreExistingConfigException $e) {
Chris@0:         $config_objects = $e->flattenConfigObjects($e->getConfigObjects());
Chris@17:         $this->messenger()->addError(
Chris@0:           $this->formatPlural(
Chris@0:             count($config_objects),
Chris@0:             'Unable to install @extension, %config_names already exists in active configuration.',
Chris@0:             'Unable to install @extension, %config_names already exist in active configuration.',
Chris@0:             [
Chris@0:               '%config_names' => implode(', ', $config_objects),
Chris@0:               '@extension' => $theme,
Chris@17:             ])
Chris@0:         );
Chris@0:       }
Chris@0:       catch (UnmetDependenciesException $e) {
Chris@17:         $this->messenger()->addError($e->getTranslatedMessage($this->getStringTranslation(), $theme));
Chris@0:       }
Chris@0: 
Chris@0:       return $this->redirect('system.themes_page');
Chris@0:     }
Chris@0: 
Chris@0:     throw new AccessDeniedHttpException();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Set the default theme.
Chris@0:    *
Chris@0:    * @param \Symfony\Component\HttpFoundation\Request $request
Chris@0:    *   A request object containing a theme name.
Chris@0:    *
Chris@0:    * @return \Symfony\Component\HttpFoundation\RedirectResponse
Chris@0:    *   Redirects back to the appearance admin page.
Chris@0:    *
Chris@0:    * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
Chris@0:    *   Throws access denied when no theme is set in the request.
Chris@0:    */
Chris@0:   public function setDefaultTheme(Request $request) {
Chris@0:     $config = $this->configFactory->getEditable('system.theme');
Chris@0:     $theme = $request->query->get('theme');
Chris@0: 
Chris@0:     if (isset($theme)) {
Chris@0:       // Get current list of themes.
Chris@0:       $themes = $this->themeHandler->listInfo();
Chris@0: 
Chris@0:       // Check if the specified theme is one recognized by the system.
Chris@0:       // Or try to install the theme.
Chris@0:       if (isset($themes[$theme]) || $this->themeHandler->install([$theme])) {
Chris@0:         $themes = $this->themeHandler->listInfo();
Chris@0: 
Chris@0:         // Set the default theme.
Chris@0:         $config->set('default', $theme)->save();
Chris@0: 
Chris@0:         // The status message depends on whether an admin theme is currently in
Chris@0:         // use: a value of 0 means the admin theme is set to be the default
Chris@0:         // theme.
Chris@0:         $admin_theme = $config->get('admin');
Chris@0:         if ($admin_theme != 0 && $admin_theme != $theme) {
Chris@17:           $this->messenger()
Chris@17:             ->addStatus($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.', [
Chris@17:               '%admin_theme' => $themes[$admin_theme]->info['name'],
Chris@17:               '%selected_theme' => $themes[$theme]->info['name'],
Chris@17:             ]));
Chris@0:         }
Chris@0:         else {
Chris@17:           $this->messenger()->addStatus($this->t('%theme is now the default theme.', ['%theme' => $themes[$theme]->info['name']]));
Chris@0:         }
Chris@0:       }
Chris@0:       else {
Chris@17:         $this->messenger()->addError($this->t('The %theme theme was not found.', ['%theme' => $theme]));
Chris@0:       }
Chris@0: 
Chris@0:       return $this->redirect('system.themes_page');
Chris@0: 
Chris@0:     }
Chris@0:     throw new AccessDeniedHttpException();
Chris@0:   }
Chris@0: 
Chris@0: }