Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Core\Extension;
Chris@0: 
Chris@0: use Drupal\Core\Config\ConfigFactoryInterface;
Chris@17: use Drupal\Core\Extension\Exception\UninstalledExtensionException;
Chris@17: use Drupal\Core\Extension\Exception\UnknownExtensionException;
Chris@0: 
Chris@0: /**
Chris@0:  * Default theme handler using the config system to store installation statuses.
Chris@0:  */
Chris@0: class ThemeHandler implements ThemeHandlerInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * A list of all currently available themes.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected $list;
Chris@0: 
Chris@0:   /**
Chris@0:    * The config factory to get the installed themes.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Config\ConfigFactoryInterface
Chris@0:    */
Chris@0:   protected $configFactory;
Chris@0: 
Chris@0:   /**
Chris@0:    * An extension discovery instance.
Chris@0:    *
Chris@18:    * @var \Drupal\Core\Extension\ThemeExtensionList
Chris@0:    */
Chris@18:   protected $themeList;
Chris@0: 
Chris@0:   /**
Chris@0:    * The app root.
Chris@0:    *
Chris@0:    * @var string
Chris@0:    */
Chris@0:   protected $root;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new ThemeHandler.
Chris@0:    *
Chris@0:    * @param string $root
Chris@0:    *   The app root.
Chris@0:    * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
Chris@0:    *   The config factory to get the installed themes.
Chris@18:    * @param \Drupal\Core\Extension\ThemeExtensionList $theme_list
Chris@18:    *   A extension discovery instance.
Chris@0:    */
Chris@18:   public function __construct($root, ConfigFactoryInterface $config_factory, ThemeExtensionList $theme_list) {
Chris@0:     $this->root = $root;
Chris@0:     $this->configFactory = $config_factory;
Chris@18:     $this->themeList = $theme_list;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getDefault() {
Chris@0:     return $this->configFactory->get('system.theme')->get('default');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function setDefault($name) {
Chris@0:     $list = $this->listInfo();
Chris@0:     if (!isset($list[$name])) {
Chris@17:       throw new UninstalledExtensionException("$name theme is not installed.");
Chris@0:     }
Chris@0:     $this->configFactory->getEditable('system.theme')
Chris@0:       ->set('default', $name)
Chris@0:       ->save();
Chris@0:     return $this;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function install(array $theme_list, $install_dependencies = TRUE) {
Chris@0:     // We keep the old install() method as BC layer but redirect directly to the
Chris@0:     // theme installer.
Chris@0:     return \Drupal::service('theme_installer')->install($theme_list, $install_dependencies);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function uninstall(array $theme_list) {
Chris@0:     // We keep the old uninstall() method as BC layer but redirect directly to
Chris@0:     // the theme installer.
Chris@0:     \Drupal::service('theme_installer')->uninstall($theme_list);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function listInfo() {
Chris@0:     if (!isset($this->list)) {
Chris@0:       $this->list = [];
Chris@18:       $installed_themes = $this->configFactory->get('core.extension')->get('theme');
Chris@18:       if (!empty($installed_themes)) {
Chris@18:         $installed_themes = array_intersect_key($this->themeList->getList(), $installed_themes);
Chris@18:         array_map([$this, 'addTheme'], $installed_themes);
Chris@0:       }
Chris@0:     }
Chris@0:     return $this->list;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function addTheme(Extension $theme) {
Chris@18:     // Register the namespaces of installed themes.
Chris@18:     // @todo Implement proper theme registration
Chris@18:     // https://www.drupal.org/project/drupal/issues/2941757
Chris@18:     \Drupal::service('class_loader')->addPsr4('Drupal\\' . $theme->getName() . '\\', $this->root . '/' . $theme->getPath() . '/src');
Chris@18: 
Chris@0:     if (!empty($theme->info['libraries'])) {
Chris@0:       foreach ($theme->info['libraries'] as $library => $name) {
Chris@0:         $theme->libraries[$library] = $name;
Chris@0:       }
Chris@0:     }
Chris@0:     if (isset($theme->info['engine'])) {
Chris@0:       $theme->engine = $theme->info['engine'];
Chris@0:     }
Chris@0:     if (isset($theme->info['base theme'])) {
Chris@0:       $theme->base_theme = $theme->info['base theme'];
Chris@0:     }
Chris@0:     $this->list[$theme->getName()] = $theme;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function refreshInfo() {
Chris@18:     $installed = $this->configFactory->get('core.extension')->get('theme');
Chris@0:     // Only refresh the info if a theme has been installed. Modules are
Chris@0:     // installed before themes by the installer and this method is called during
Chris@0:     // module installation.
Chris@0:     if (empty($installed) && empty($this->list)) {
Chris@0:       return;
Chris@0:     }
Chris@0:     $this->reset();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function reset() {
Chris@18:     $this->themeList->reset();
Chris@0:     $this->list = NULL;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function rebuildThemeData() {
Chris@18:     return $this->themeList->reset()->getList();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getBaseThemes(array $themes, $theme) {
Chris@18:     return $this->themeList->getBaseThemes($themes, $theme);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getName($theme) {
Chris@18:     return $this->themeList->getName($theme);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getThemeDirectories() {
Chris@0:     $dirs = [];
Chris@0:     foreach ($this->listInfo() as $name => $theme) {
Chris@0:       $dirs[$name] = $this->root . '/' . $theme->getPath();
Chris@0:     }
Chris@0:     return $dirs;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function themeExists($theme) {
Chris@0:     $themes = $this->listInfo();
Chris@0:     return isset($themes[$theme]);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getTheme($name) {
Chris@0:     $themes = $this->listInfo();
Chris@0:     if (isset($themes[$name])) {
Chris@0:       return $themes[$name];
Chris@0:     }
Chris@17:     throw new UnknownExtensionException(sprintf('The theme %s does not exist.', $name));
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function hasUi($name) {
Chris@0:     $themes = $this->listInfo();
Chris@0:     if (isset($themes[$name])) {
Chris@0:       if (!empty($themes[$name]->info['hidden'])) {
Chris@0:         $theme_config = $this->configFactory->get('system.theme');
Chris@0:         return $name == $theme_config->get('default') || $name == $theme_config->get('admin');
Chris@0:       }
Chris@0:       return TRUE;
Chris@0:     }
Chris@0:     return FALSE;
Chris@0:   }
Chris@0: 
Chris@0: }