protected void notifyHistoryChangedListeners(){
  Iterator<HistoryChangedListener> iter;
  HistoryChangedListener l;
  iter=m_HistoryChangedListeners.iterator();
  while (iter.hasNext()) {
    l=iter.next();
    l.historyChanged(new HistoryChangedEvent(this,HISTORY_NAME,getHistory()));
  }
}

protected void notifyHistoryChangedListeners ( ) { Iterator < HistoryChangedListener > iter ; HistoryChangedListener l ; iter = m_HistoryChangedListeners . iterator ( ) ; while ( iter . hasNext ( ) ) { l = iter . next ( ) ; l . historyChanged ( new HistoryChangedEvent ( this , HISTORY_NAME , getHistory ( ) ) ) ; } }
notifies the history listeners of the event .
