public function adminBarRender()
 {
     global $wp_admin_bar;
     $thb_theme = thb_theme();
     $main_page = $thb_theme->getAdmin()->getMainPage();
     if (current_user_can($main_page->getCapability())) {
         $wp_admin_bar->add_menu(array('parent' => false, 'id' => $main_page->getSlug(), 'title' => $main_page->getTitle(), 'href' => thb_system_admin_url($main_page->getSlug())));
     }
 }
<div class="thb-page-tab <?php 
echo $tab->getIndex() == 0 ? 'thb-first' : '';
?>
" id="thb-page-tab-<?php 
echo $tab->getSlug();
?>
" data-slug="<?php 
echo $tab->getSlug();
?>
" data-page="<?php 
echo $_GET['page'];
?>
">

	<form method="post" action="<?php 
echo thb_system_admin_url($_GET['page']);
?>
" enctype="multipart/form-data">
		<input type="hidden" name="action" value="<?php 
echo $tab->getAction();
?>
" />
		<input type="hidden" name="THB_nonce" value="<?php 
echo wp_create_nonce('THB_tab');
?>
" />
		<input type="hidden" name="page" value="<?php 
echo $_GET['page'];
?>
" />
 /**
  * Redirect the user to a specific theme page.
  *
  * @param string $slug The page slug.
  * @return void
  */
 public function redirectToThemePage($slug = null)
 {
     if (!$slug) {
         $pages = $this->getPages();
         if (empty($pages)) {
             return;
         }
         $page = $pages[0];
         $slug = $page->getSlug();
     }
     wp_redirect(thb_system_admin_url($slug));
     die;
 }