In file userfiles\modules\content\controllers\Manager.php
function index($params){
//...
$post_toolbar_view = $this->views_dir . 'toolbar.php';
$toolbar = new View($post_toolbar_view);
//...
$toolbar->assign('params', $params);
//...
$view->assign('toolbar', $toolbar);
//...
return $view->display();
//...
}
In file userfiles\modules\content\views\toolbar.php
value="<?php if (isset($params['keyword']) and $params['keyword'] != false): ?><?php print $params['keyword'] ?><?php endif; ?>"