function edit()
 {
     events::observe('save', 'templates', 'apps', '_save');
     events::observer();
     $tmpl_file = events::get('tmpl_file');
     $app = events::get('app');
     if (events::detect('restore')) {
         self::restoreVersion($app, $tmpl_file, events::get('restore'));
     }
     admin::components('tabs', 'validator');
     f::set('app', $app);
     f::set('tmpl_file', $tmpl_file);
     s::set('app', $app);
     s::set('tmpl_file', $tmpl_file);
     $file = SYS_ROOT . 'tmpls/' . ADMIN_SITE . '/' . $app . '/' . $tmpl_file;
     $code = files::get($file);
     f::set('tmpl_code', $code);
     self::getApps();
     /*
     	Load versions
     */
     db::table('templates_versions');
     db::where('app', $app);
     db::where('tmpl_file', $tmpl_file);
     db::order('version_date', 'DESC');
     $res = db::select();
     while ($row = mysql_fetch_assoc($res)) {
         $row['version_date'] = dt::date2print('%H:%i %d.%m.%Y', $row['version_date']);
         $row['version_code'] = '{non}' . htmlspecialchars($row['version_code']) . '{/non}';
         s::roll('versions', $row);
     }
 }

 /**
  * Make sure the session is started within the constructor
  */
 public function __construct()
 {
     s::start();
     if (!isset($_SESSION['_cache'])) {
         $_SESSION['_cache'] = array();
     }
 }

 /**
  * Set flash data
  *
  * @param  string  $key
  * @param  mixed  $value
  * @return void
  */
 public static function set($key, $value)
 {
     if (!isset($data[$key])) {
         static::$data[$key] = $value;
     }
     Session::set(self::sessionKey(), static::$data);
 }

 function show($name)
 {
     foreach (self::$errors as $k => $v) {
         $show .= '<li>' . $v . '</li>';
     }
     s::set($name, '<ul>' . $show . '</ul>');
 }

 public function login($welcome = null)
 {
     if ($user = panel()->site()->user()) {
         go(panel()->urls()->index());
     }
     $message = l('login.error');
     $error = false;
     $form = panel()->form('login');
     $form->cancel = false;
     $form->save = l('login.button');
     $form->centered = true;
     if (r::is('post') and get('_csfr') and csfr(get('_csfr'))) {
         $data = $form->serialize();
         $user = site()->user(str::lower($data['username']));
         if (!$user) {
             $error = true;
         } else {
             if (!$user->hasPanelAccess()) {
                 $error = true;
             } else {
                 if (!$user->login(get('password'))) {
                     $error = true;
                 } else {
                     go(panel()->urls()->index());
                 }
             }
         }
     }
     if ($username = s::get('username')) {
         $form->fields->username->value = html($username, false);
     }
     return layout('login', array('meta' => new Snippet('meta'), 'welcome' => $welcome ? l('login.welcome') : '', 'form' => $form, 'error' => $error ? $message : false));
 }

 /**
  * Remove old values from the Session’s flash data.
  */
 public static function flush()
 {
     // Make sure the session is started
     s::start();
     // Retrieve the flash data
     $registry = s::get(self::$namespace);
     // Clean up registry
     if (!empty($registry)) {
         foreach ($registry as $key => $expiry) {
             $expiry++;
             // Remove all old values from the session
             if ($expiry > 1) {
                 s::remove($key);
                 unset($registry[$key]);
             } else {
                 $registry[$key] = $expiry;
             }
         }
         // Write registry back to session
         if (!empty($registry)) {
             s::set(self::$namespace, $registry);
         } else {
             s::remove(self::$namespace);
         }
     }
 }

 function get($app, $tpl, $data, $section = false, $sys = false)
 {
     if ($tpl) {
         $tmpl = false;
         if ($sys) {
             $file = APPS . $app . '/' . self::$module . '/' . RULE . '/' . $tpl;
         } else {
             $file = SYS_ROOT . 'tmpls/' . parent::$site . '/' . $app . '/' . $tpl;
         }
         $file_id = md5($file);
         if (isset(self::$file_data[$file_id])) {
             return self::$file_data[$file_id];
         }
         if (file_exists($file)) {
             ob_start();
             include $file;
             $data = ob_get_contents();
             ob_end_clean();
             //$data = file_get_contents($file);
             if ($section) {
                 s::section($section);
             }
             self::$file_data[$file_id] = $data;
         }
     }
     return $data;
 }

 public function index()
 {
     if (site()->users()->count() > 0) {
         go(panel()->urls()->login());
     }
     if ($problems = installation::check()) {
         $content = view('installation/check', array('problems' => $problems));
     } else {
         $form = panel()->form('installation', array('language' => kirby()->option('panel.language', 'en')));
         $form->cancel = false;
         $form->save = l('installation.signup.button');
         $form->centered = true;
         foreach (panel()->languages() as $lang) {
             $form->fields()->get('language')->options[$lang->code()] = $lang->title();
         }
         $form->on('submit', function ($form) {
             try {
                 // fetch all the form data
                 $data = $form->serialize();
                 // make sure that the first user is an admin
                 $data['role'] = 'admin';
                 // try to create the new user
                 $user = panel()->site()->users()->create($data);
                 // store the new username for the login screen
                 s::set('username', $user->username());
                 // redirect to the login
                 go(panel()->urls()->login() . '/welcome');
             } catch (Exception $e) {
                 $form->alert($e->getMessage());
             }
         });
         $content = view('installation/signup', array('form' => $form));
     }
     return layout('installation', array('meta' => new Snippet('meta'), 'content' => $content));
 }

 function get($res, $name = 'clouds')
 {
     $nums_clouds = array();
     if (db::rows() > 0) {
         while ($row = mysql_fetch_array($res)) {
             $nums_clouds[$row['tag_name']] = $row['num'];
         }
         ksort($nums_clouds);
         $max_size = 200;
         // max font size in %
         $min_size = 100;
         // min font size in %
         $max_qty = max(array_values($nums_clouds));
         $min_qty = min(array_values($nums_clouds));
         $spread = $max_qty - $min_qty;
         if (0 == $spread) {
             $spread = 1;
         }
         $step = ($max_size - $min_size) / $spread;
         foreach ($nums_clouds as $k => $v) {
             $size = $min_size + ($v - $min_qty) * $step;
             s::roll($name, array('name' => $k, 'size' => $size, 'value' => $v));
         }
     }
 }

 function __construct()
 {
     s::start();
     c::set('home.keepurl', true);
     // auto-detect the url if it is not set
     if (!c::get('url')) {
         c::set('url', c::get('scheme') . server::get('http_host'));
     }
     // setup the thumb plugin
     c::set('thumb.cache.root', c::get('root') . '/thumbs');
     c::set('thumb.cache.url', c::get('url') . '/thumbs');
     c::set('url', c::get('url') . '/' . c::get('panel.folder'));
     // remove the panel folder name from the uri
     c::set('subfolder', ltrim(c::get('subfolder') . '/' . c::get('panel.folder'), '/'));
     // attach the uri after caching
     $this->uri = new paneluri();
     if (c::get('lang.support')) {
         $path = $this->uri->path->toArray();
         $first = array_shift($path);
         if (!in_array($first, c::get('lang.available', array()))) {
             $first = c::get('lang.default');
         }
         // set the current language
         c::set('lang.current', $first);
         $this->uri->path = new uriPath($path);
     }
     // get the first set of pages
     $this->rootPages();
     // get the additional site info from content/site.txt
     $this->siteInfo();
 }

 public function paginated($mode = 'sidebar')
 {
     if ($limit = $this->page->blueprint()->pages()->limit()) {
         $hash = sha1($this->page->id());
         switch ($mode) {
             case 'sidebar':
                 $id = 'pages.' . $hash;
                 $var = 'page';
                 break;
             case 'subpages/visible':
                 $id = 'subpages.visible.' . $hash;
                 $var = 'visible';
                 break;
             case 'subpages/invisible':
                 $id = 'subpages.invisible.' . $hash;
                 $var = 'invisible';
                 break;
         }
         $children = $this->paginate($limit, array('page' => get($var, s::get($id)), 'omitFirstPage' => false, 'variable' => $var, 'method' => 'query'));
         // store the last page
         s::set($id, $children->pagination()->page());
         return $children;
     } else {
         return $this;
     }
 }

 public function message()
 {
     if ($message = s::get('message') and is_array($message)) {
         $text = a::get($message, 'text');
         $type = a::get($message, 'type', 'notification');
         $element = new Brick('div');
         $element->addClass('message');
         if ($type == 'error') {
             $element->addClass('message-is-alert');
         } else {
             $element->addClass('message-is-notice');
         }
         $element->append(function () use($text) {
             $content = new Brick('span');
             $content->addClass('message-content');
             $content->text($text);
             return $content;
         });
         $element->append(function () {
             $toggle = new Brick('a');
             $toggle->attr('href', url::current());
             $toggle->addClass('message-toggle');
             $toggle->html('<i>&times;</i>');
             return $toggle;
         });
         s::remove('message');
         return $element;
     }
 }

 protected function signup()
 {
     $self = $this;
     $form = $this->form('installation/signup', array(), function ($form) use($self) {
         $form->validate();
         if (!$form->isValid()) {
             return false;
         }
         try {
             // fetch all the form data
             $data = $form->serialize();
             // make sure that the first user is an admin
             $data['role'] = 'admin';
             // try to create the new user
             $user = site()->users()->create($data);
             // store the new username for the login screen
             s::set('username', $user->username());
             // try to login the user automatically
             if ($user->hasPanelAccess()) {
                 $user->login($data['password']);
             }
             // redirect to the login
             $self->redirect('login');
         } catch (Exception $e) {
             $form->alert($e->getMessage());
         }
     });
     return $this->modal('index', compact('form'));
 }

 public function logout()
 {
     s::restart();
     if ($user = panel()->site()->user()) {
         $user->logout();
     }
     go(panel()->urls()->login());
 }

 protected function tearDown()
 {
     s::restart();
     // clean all triggers
     kirby::$triggered = array();
     kirby::$hooks = array();
     $this->removeContent();
     $this->removeAccounts();
 }

 public static function get($name)
 {
     $messages = s::get('messages');
     foreach ($messages as $key => $message) {
         if ($message->name == $name) {
             return $message->value;
         }
     }
     s::remove('messages');
 }

 function rollApps()
 {
     $tmp = $apps = array();
     $file = SYS_ROOT . 'conf/global/apps.ini';
     $tmp = ini::parse($file);
     foreach ($tmp as $k => $v) {
         $v['app'] = $k;
         s::roll('apps', $v);
     }
 }

 protected static function kill()
 {
     self::$user = null;
     // overwrite the token
     $token = str::random();
     // the cookie is valid for 24 hours
     cookie::set('authFrontend', $token, 60 * 60 * 24);
     // restart the session
     s::restart();
 }

 function getBlocks($site_id = 1)
 {
     db::table('blocks');
     db::where('site_id', $site_id);
     db::where('block_pub', '1');
     db::order('block_name');
     $res = db::select();
     while ($row = mysql_fetch_assoc($res)) {
         s::roll('blocks', $row);
     }
 }

 function getMenus($site_id)
 {
     db::table('menus');
     db::where('site_id', $site_id);
     db::where('menu_pub', '1');
     db::order('menu_title');
     $res = db::select();
     while ($row = mysql_fetch_assoc($res)) {
         s::roll('menus', $row);
     }
 }