protected function createComponentGrid($name)
 {
     $grid = new Gridito\Grid($this, $name);
     $grid->setDefaultSorting('id', 'asc');
     // model
     $model = $this->context->doctrineUsersModel;
     $model->addColumnAliases('username', 'credentials.username', 'c.username');
     $grid->setModel($model);
     // columns
     $grid->addColumn('id', 'ID')->setSortable(true);
     $grid->addColumn('username', 'Username')->setSortable(true);
     $grid->addColumn('name', 'Name')->setSortable(true);
     $grid->addColumn('surname', 'Surname')->setSortable(true);
     $grid->addColumn('mail', 'E-mail', array('sortable' => true, 'renderer' => function ($row) {
         echo Nette\Utils\Html::el('a')->href("mailto:{$row->mail}")->setText($row->mail);
     }));
     $grid->addColumn('active', 'Active')->setSortable(true);
     // toolbar buttons
     $grid->addToolbarButton('create', 'Create new user', array('handler' => function () use($grid) {
         $grid->flashMessage('Unable to create user.', 'error');
         $grid->redirect('this');
     }, 'icon' => 'ui-icon-plusthick'));
     $grid->addToolbarWindowButton('hello', 'New window')->setHandler(function () {
         echo 'Hello!';
     })->setIcon('ui-icon-newwin');
     $grid->addToolbarButton('back', 'Go back to examples', array('link' => $this->link('Homepage:'), 'icon' => 'ui-icon-home'));
     $grid->addWindowButton('detail', 'Detail', array('handler' => function ($user) {
         // todo fix XSS
         echo '<p><strong>' . $user->name . ' ' . $user->surname . '</strong></p>';
         echo '<table>';
         echo '<tr><th>ID</th><td>' . $user->id . '</td></tr>';
         echo '<tr><th>Username</th><td>' . $user->credentials->username . '</td></tr>';
         echo '<tr><th>E-mail</th><td>' . $user->mail . '</td></tr>';
         echo '<tr><th>Active</th><td>' . ($user->active ? 'yes' : 'no') . '</td></tr>';
         echo '</table>';
     }, 'icon' => 'ui-icon-search'));
     // action buttons
     $grid->addButton('delete', 'Delete', array('handler' => function ($user) use($grid) {
         $grid->flashMessage("Unable to delete user {$user->name} {$user->surname}.", 'error');
         $grid->redirect('this');
     }, 'icon' => 'ui-icon-closethick', 'confirmationQuestion' => function ($user) {
         if ($user->active) {
             return "Really delete use {$user->name} {$user->surname}?";
         } else {
             return null;
         }
     }, 'showText' => false, 'visible' => function ($user) {
         return !$user->isActive();
     }));
 }