function execCommandMarkSem(){
$item_id = Request::option('item_id');
$marked_sem_array = Request::quotedArray('marked_sem');
$marked_sem = array_values(array_unique($marked_sem_array));
$sem_aktion = explode("_",Request::quoted('sem_aktion'));
if (($sem_aktion[0] == 'mark' || $sem_aktion[1] == 'mark') && count($marked_sem)){
$count_mark = 0;
for ($i = 0; $i < count($marked_sem); ++$i){
if (!isset($this->marked_sem[$marked_sem[$i]])){
++$count_mark;
$this->marked_sem[$marked_sem[$i]] = true;
}
}
if ($count_mark){
$this->msg[$item_id] = "msg§" . sprintf(_("Es wurde(n) %s Veranstaltung(en) der Merkliste hinzugefügt."),$count_mark);
}
}
if ($this->isItemAdmin($item_id)){
if (($sem_aktion[0] == 'del' || $sem_aktion[1] == 'del') && count($marked_sem)){
$not_deleted = array();
foreach($marked_sem as $key => $seminar_id){
$seminar = new Seminar($seminar_id);
if(count($seminar->getStudyAreas()) == 1){
$not_deleted[] = $seminar->getName();
unset($marked_sem[$key]);
}
}
if ($this->msg[$item_id]){
$this->msg[$item_id] .= "<br>";
} else {
$this->msg[$item_id] = "msg§";
}
if(count($marked_sem)){
$count_del = $this->tree->DeleteSemEntries($item_id, $marked_sem);
$this->msg[$item_id] .= sprintf(_("%s Veranstaltungszuordnung(en) wurde(n) aufgehoben."),$count_del);
}
if(count($not_deleted)){
$this->msg[$item_id] .= '<br>'
. sprintf(_("Für folgende Veranstaltungen wurde die Zuordnung nicht aufgehoben, da es die einzige Zuordnung ist: %s")
, '<br>'.htmlready(join(', ', $not_deleted)));
}
}
$this->anchor = $item_id;
$this->open_items[$item_id] = true;
return true;
}
return false;
}