/** Notify the listeners that the selection has changed.
* @param firstindex_ The first index in the interval
* @param lastindex_ The last index in the interval.
*/
protected void fireValueChanged(int firstindex_, int lastindex_) {
ListSelectionEvent event =
new ListSelectionEvent(this, firstindex_, lastindex_, false);
Iterator<ListSelectionListener> iter = _listeners.iterator();
while (iter.hasNext()) {
ListSelectionListener l = (ListSelectionListener) iter.next();