class Permission

class Permission extends AccessPluginBase implements CacheableDependencyInterface {
    
    /**
     * {@inheritdoc}
     */
    protected $usesOptions = TRUE;
    
    /**
     * The permission handler.
     *
     * @var \Drupal\user\PermissionHandlerInterface
     */
    protected $permissionHandler;
    
    /**
     * The module handler.
     *
     * @var \Drupal\Core\Extension\ModuleHandlerInterface
     */
    protected $moduleHandler;
    
    /**
     * Constructs a Permission object.
     *
     * @param array $configuration
     *   A configuration array containing information about the plugin instance.
     * @param string $plugin_id
     *   The plugin_id for the plugin instance.
     * @param mixed $plugin_definition
     *   The plugin implementation definition.
     * @param \Drupal\user\PermissionHandlerInterface $permission_handler
     *   The permission handler.
     * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
     *   The module handler.
     */
    public function __construct(array $configuration, $plugin_id, $plugin_definition, PermissionHandlerInterface $permission_handler, ModuleHandlerInterface $module_handler) {
        parent::__construct($configuration, $plugin_id, $plugin_definition);
        $this->permissionHandler = $permission_handler;
        $this->moduleHandler = $module_handler;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
        return new static($configuration, $plugin_id, $plugin_definition, $container->get('user.permissions'), $container->get('module_handler'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function access(AccountInterface $account) {
        return $account->hasPermission($this->options['perm']);
    }
    
    /**
     * {@inheritdoc}
     */
    public function alterRouteDefinition(Route $route) {
        $route->setRequirement('_permission', $this->options['perm']);
    }
    public function summaryTitle() {
        $permissions = $this->permissionHandler
            ->getPermissions();
        if (isset($permissions[$this->options['perm']])) {
            return $permissions[$this->options['perm']]['title'];
        }
        return $this->t($this->options['perm']);
    }
    protected function defineOptions() {
        $options = parent::defineOptions();
        $options['perm'] = [
            'default' => 'access content',
        ];
        return $options;
    }
    public function buildOptionsForm(&$form, FormStateInterface $form_state) {
        parent::buildOptionsForm($form, $form_state);
        // Get list of permissions
        $perms = [];
        $permissions = $this->permissionHandler
            ->getPermissions();
        foreach ($permissions as $perm => $perm_item) {
            $provider = $perm_item['provider'];
            $display_name = $this->moduleHandler
                ->getName($provider);
            $perms[$display_name][$perm] = strip_tags($perm_item['title']);
        }
        $form['perm'] = [
            '#type' => 'select',
            '#options' => $perms,
            '#title' => $this->t('Permission'),
            '#default_value' => $this->options['perm'],
            '#description' => $this->t('Only users with the selected permission flag will be able to access this display.'),
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCacheMaxAge() {
        return Cache::PERMANENT;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCacheContexts() {
        return [
            'user.permissions',
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCacheTags() {
        return [];
    }

}