don't trigger exam mode when vips is hidden, fixes #205

lib/vips_common.inc.php

@@ -310,8 +310,9 @@ function get_courses_with_running_exams($user_id)
     foreach ($stmt as $row) {
         $assignment = VipsAssignment::find($row['id']);
         $ip_range = $assignment->options['ip_range'];
+        $settings = CourseConfig::get($row['Seminar_id']);
 
-        if ($assignment->isVisible($user_id)) {
+        if ($assignment->isVisible($user_id) && $settings->VIPS_TAB_VISIBLE) {
             if (strlen($ip_range) > 0 && $assignment->checkIPAccess($_SERVER['REMOTE_ADDR'])) {
                 $courses[$row['Seminar_id']] = $row['Name'];
             }

views/exam_mode/index.php

@@ -15,6 +15,7 @@
         <tbody>
             <? foreach ($courses as $course_id => $course_name) : ?>
                 <? $nav = VipsPlugin::$instance->getIconNavigation($course_id, null, null) ?>
+                <? if ($nav): ?>
                     <tr>
                         <td>
                             <?= CourseAvatar::getAvatar($course_id)->getImageTag(Avatar::SMALL) ?>
@@ -30,6 +31,7 @@
                             </a>
                         </td>
                     </tr>
+                <? endif ?>
             <? endforeach ?>
         </tbody>
     </table>