Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/system/src/Controller/ThemeController.php

@@ -0,0 +1,212 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\system\Controller\ThemeController.
+ */
+
+namespace Drupal\system\Controller;
+
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Config\PreExistingConfigException;
+use Drupal\Core\Config\UnmetDependenciesException;
+use Drupal\Core\Controller\ControllerBase;
+use Drupal\Core\Extension\ThemeHandlerInterface;
+use Drupal\Core\Routing\RouteBuilderInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+
+/**
+ * Controller for theme handling.
+ */
+class ThemeController extends ControllerBase {
+
+  /**
+   * The theme handler service.
+   *
+   * @var \Drupal\Core\Extension\ThemeHandlerInterface
+   */
+  protected $themeHandler;
+
+  /**
+   * The route builder service.
+   *
+   * @var \Drupal\Core\Routing\RouteBuilderInterface
+   */
+  protected $routeBuilder;
+
+  /**
+   * Constructs a new ThemeController.
+   *
+   * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
+   *   The theme handler.
+   * @param \Drupal\Core\Routing\RouteBuilderInterface $route_builder
+   *   The route builder.
+   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+   *   The config factory.
+   */
+  public function __construct(ThemeHandlerInterface $theme_handler, RouteBuilderInterface $route_builder, ConfigFactoryInterface $config_factory) {
+    $this->themeHandler = $theme_handler;
+    $this->configFactory = $config_factory;
+    $this->routeBuilder = $route_builder;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('theme_handler'),
+      $container->get('router.builder'),
+      $container->get('config.factory')
+    );
+  }
+
+  /**
+   * Uninstalls a theme.
+   *
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   A request object containing a theme name and a valid token.
+   *
+   * @return \Symfony\Component\HttpFoundation\RedirectResponse
+   *   Redirects back to the appearance admin page.
+   *
+   * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
+   *   Throws access denied when no theme or token is set in the request or when
+   *   the token is invalid.
+   */
+  public function uninstall(Request $request) {
+    $theme = $request->get('theme');
+    $config = $this->config('system.theme');
+
+    if (isset($theme)) {
+      // Get current list of themes.
+      $themes = $this->themeHandler->listInfo();
+
+      // Check if the specified theme is one recognized by the system.
+      if (!empty($themes[$theme])) {
+        // Do not uninstall the default or admin theme.
+        if ($theme === $config->get('default') || $theme === $config->get('admin')) {
+          drupal_set_message($this->t('%theme is the default theme and cannot be uninstalled.', array('%theme' => $themes[$theme]->info['name'])), 'error');
+        }
+        else {
+          $this->themeHandler->uninstall(array($theme));
+          drupal_set_message($this->t('The %theme theme has been uninstalled.', 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();
+  }
+
+  /**
+   * Installs a theme.
+   *
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   A request object containing a theme name and a valid token.
+   *
+   * @return \Symfony\Component\HttpFoundation\RedirectResponse
+   *   Redirects back to the appearance admin page.
+   *
+   * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
+   *   Throws access denied when no theme or token is set in the request or when
+   *   the token is invalid.
+   */
+  public function install(Request $request) {
+    $theme = $request->get('theme');
+
+    if (isset($theme)) {
+      try {
+        if ($this->themeHandler->install(array($theme))) {
+          $themes = $this->themeHandler->listInfo();
+          drupal_set_message($this->t('The %theme theme has been installed.', array('%theme' => $themes[$theme]->info['name'])));
+        }
+        else {
+          drupal_set_message($this->t('The %theme theme was not found.', array('%theme' => $theme)), 'error');
+        }
+      }
+      catch (PreExistingConfigException $e) {
+        $config_objects = $e->flattenConfigObjects($e->getConfigObjects());
+        drupal_set_message(
+          $this->formatPlural(
+            count($config_objects),
+            'Unable to install @extension, %config_names already exists in active configuration.',
+            'Unable to install @extension, %config_names already exist in active configuration.',
+            array(
+              '%config_names' => implode(', ', $config_objects),
+              '@extension' => $theme,
+            )),
+          'error'
+        );
+      }
+      catch (UnmetDependenciesException $e) {
+        drupal_set_message($e->getTranslatedMessage($this->getStringTranslation(), $theme), 'error');
+      }
+
+      return $this->redirect('system.themes_page');
+    }
+
+    throw new AccessDeniedHttpException();
+  }
+
+  /**
+   * 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->configFactory->getEditable('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->routeBuilder->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();
+  }
+
+}