code: public static final int findValueInListBox(ListBox list, String value) {
  	for (int i=0; i<list.getItemCount(); i++) {
  	    if (value.equals(list.getValue(i))) {
  		return i;
  	    }
  	}
  	return -1;
      }
docs: Utility function to find the first index of a value in a
  ListBox.