@Override
  public void entryAdded(ModelEvent event, Value[] values) {
    if (chronoFrame.isRealTimeMode() && (sysclkPos >= 0)) {
      try {
        // update gui only on sysclk change
        if (!values[sysclkPos].toString().equals(lastSysclk)) {
          lastSysclk = values[sysclkPos].toString();
          int pos = 0;

          for (Value v : values) {
            chronoData.appendValueToSignal(signalNamesKeepOrder[pos++], v.toString());
          }
          chronoFrame.getChronoData().updateRealTimeExpandedBus();
          chronoFrame.repaintAll(false);
        }
      } catch (Exception ex) {
        ex.printStackTrace();
      }
    }
  }
  public ChronoModelEventHandler(ChronoFrame chronoFrame, Model model, Project prj)
      throws NoSysclkException {
    this.chronoFrame = chronoFrame;

    this.chronoData = chronoFrame.getChronoData();
    model.addModelListener(this);

    Selection sel = model.getSelection();
    int columns = sel.size();
    signalNamesKeepOrder = new String[columns];
    for (int i = 0; i < columns; i++) {
      String name = "";
      Component[] path = sel.get(i).getPath();
      for (int k = 0; k < path.length; k++) {
        SubcircuitFactory circFact = (SubcircuitFactory) path[k].getFactory();
        name += circFact.getDisplayName() + "/";
      }
      name += sel.get(i).toShortString();
      signalNamesKeepOrder[i] = name;

      String value = sel.get(i).fetchValue(model.getCircuitState()).toString();
      // is the entry a bus?
      if (value.length() > 1)
        chronoData.put(name, new SignalDataBus(name, new ArrayList<String>()));
      else chronoData.put(name, new SignalData(name, new ArrayList<String>()));
      // add initial data
      chronoData.appendValueToSignal(name, value);
      chronoData.appendValueToSignal(name, value);

      // save sysclk position in signalNamesKeepOrder
      if (name.equals("sysclk")) sysclkPos = i;
    }
    if (sysclkPos == -1) throw new NoSysclkException("No sysclk signal found");
    // store signal order
    chronoData.setSignalOrder(new ArrayList<String>(Arrays.asList(signalNamesKeepOrder)));
  }