@Override
 public boolean onOptionsItemSelected(MenuItem item) {
   switch (item.getItemId()) {
     case R.id.move:
       onMove();
       return true;
     case R.id.delete:
       onDelete();
       return true;
     case R.id.mark_as_unread:
       onMarkAsUnread();
       return true;
   }
   return super.onOptionsItemSelected(item);
 }