JavaFX 2.x: как переместить обе панели?

Мой класс ниже рисует две диаграммы на разделенной панели.

При перетаскивании левой кнопкой мыши верхняя линейная диаграмма перемещается влево / вправо (и вверх / вниз).

Я хотел бы перемещать обе панели вместе влево / вправо, когда я щелкаю и перетаскиваю левой кнопкой мыши верхний график: как это сделать?

Спасибо

public class XyChartInSplitMove extends Application { 
SplitPane               splitPane1 = null; 
BorderPane              pane; 
BorderPane              pane2; 
XYChart.Series          series1 = new XYChart.Series(); 
XYChart.Series          series2 = new XYChart.Series(); 

SimpleDoubleProperty rectinitX = new SimpleDoubleProperty(); 
SimpleDoubleProperty rectinitY = new SimpleDoubleProperty();  

@Override 
public void start(Stage stage) { 

final NumberAxis xAxis = new NumberAxis(1, 12, 1); 
final NumberAxis yAxis = new NumberAxis(0.53000, 0.53910, 0.0005); 

xAxis.setAnimated(false);
yAxis.setAnimated(false);

yAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis) { 

    @Override 
    public String toString(Number object) { 
        return String.format("%7.5f", object); 
    } 
});   
final LineChart<Number, Number> lineChart1 = new LineChart<Number, Number>(xAxis, yAxis); 

lineChart1.setCreateSymbols(false); 
lineChart1.setAlternativeRowFillVisible(false); 
lineChart1.setAnimated(false);
lineChart1.setLegendVisible(false);

series1.getData().add(new XYChart.Data(1, 0.53185)); 
series1.getData().add(new XYChart.Data(2, 0.532235)); 
series1.getData().add(new XYChart.Data(3, 0.53234)); 
series1.getData().add(new XYChart.Data(4, 0.538765)); 
series1.getData().add(new XYChart.Data(5, 0.53442)); 
series1.getData().add(new XYChart.Data(6, 0.534658)); 
series1.getData().add(new XYChart.Data(7, 0.53023)); 
series1.getData().add(new XYChart.Data(8, 0.53001)); 
series1.getData().add(new XYChart.Data(9, 0.53589)); 
series1.getData().add(new XYChart.Data(10, 0.53476)); 
series1.getData().add(new XYChart.Data(11, 0.530123)); 
series1.getData().add(new XYChart.Data(12, 0.531035)); 

lineChart1.getData().addAll(series1); 

pane = new BorderPane(); 
pane.setCenter(lineChart1); 

splitPane1 = new SplitPane();                                
splitPane1.setOrientation(Orientation.VERTICAL);
splitPane1.getItems().addAll(pane);
splitPane1.setDividerPosition(0, 1);

Platform.runLater(new Runnable() {
     @Override
     public void run() {
         double percSplit;

        ObservableList<SplitPane.Divider> splitDiv =  splitPane1.getDividers();

        percSplit = 1/(double)(splitDiv.size()+1);
        for (int i = 0; i< splitDiv.size(); i++) {                        
            splitPane1.setDividerPosition(i, percSplit);
            percSplit += 1/(double)(splitDiv.size()+1);
        }
     }
 });
//BarChart
final CategoryAxis xAxis2 = new CategoryAxis();
final NumberAxis   yAxis2 = new NumberAxis();

yAxis2.setTickUnit(1);
yAxis2.setPrefWidth(35);
yAxis2.setMinorTickCount(10);

yAxis2.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis2){
    @Override
public String toString(Number object){
        String label;
        label = String.format("%7.2f", object.floatValue());
        return label;
}
});
final BarChart<String, Number>BarChart2 = new BarChart<String, Number>(xAxis2, yAxis2);

BarChart2.setAlternativeRowFillVisible(false);
BarChart2.setLegendVisible(false);
BarChart2.setAnimated(false);

XYChart.Series series2 = new XYChart.Series();

series2.getData().add(new XYChart.Data("Jan", 1));
series2.getData().add(new XYChart.Data("Feb", 3));
series2.getData().add(new XYChart.Data("Mar", 1.5));
series2.getData().add(new XYChart.Data("Apr", 3));
series2.getData().add(new XYChart.Data("May", 4.5));
series2.getData().add(new XYChart.Data("Jun", 5));
series2.getData().add(new XYChart.Data("Jul", 4));
series2.getData().add(new XYChart.Data("Aug", 8));
series2.getData().add(new XYChart.Data("Sep", 16.5));
series2.getData().add(new XYChart.Data("Oct", 13.9));
series2.getData().add(new XYChart.Data("Nov", 17));
series2.getData().add(new XYChart.Data("Dec", 20));

BarChart2.getData().addAll(series2);

Platform.runLater(new Runnable() {
     @Override
     public void run() {
         double percSplit;
         splitPane1.getItems().addAll(BarChart2);

        ObservableList<SplitPane.Divider> splitDiv =  splitPane1.getDividers();

        percSplit = 1/(double)(splitDiv.size()+1);
        for (int i = 0; i< splitDiv.size(); i++) {                        
            splitPane1.setDividerPosition(i, percSplit);
            percSplit += 1/(double)(splitDiv.size()+1);
            }
     }
 });
Scene scene = new Scene(splitPane1, 800, 600); 

stage.setScene(scene);         

pane.setOnMouseClicked(mouseHandler); 
pane.setOnMouseDragged(mouseHandler); 
pane.setOnMouseEntered(mouseHandler); 
pane.setOnMouseExited(mouseHandler); 
pane.setOnMouseMoved(mouseHandler);  
pane.setOnMouseReleased(mouseHandler); 

stage.show(); 
} 

EventHandler<MouseEvent> mouseHandler = new EventHandler<MouseEvent>(){ 

@Override 
public void handle(MouseEvent mouseEvent) { 

    if (mouseEvent.getEventType() == MouseEvent.MOUSE_DRAGGED ||    mouseEvent.getEventType() == MouseEvent.MOUSE_MOVED){ 
        LineChart<Number, Number> lineChart = (LineChart<Number, Number>) pane.getCenter(); 

        NumberAxis yAxis = (NumberAxis) lineChart.getYAxis(); 
        NumberAxis xAxis = (NumberAxis) lineChart.getXAxis();  
        double Tgap = xAxis.getWidth()/(xAxis.getUpperBound() - xAxis.getLowerBound()); 
        double newXlower=xAxis.getLowerBound(), newXupper=xAxis.getUpperBound(); 
        double newYlower=yAxis.getLowerBound(), newYupper=yAxis.getUpperBound(); 

        double xAxisShift = getSceneShift(xAxis);
        double yAxisShift = getSceneShift(yAxis);

        double yAxisStep=yAxis.getHeight()/(yAxis.getUpperBound()-yAxis.getLowerBound());
        double CurrentPrice=yAxis.getUpperBound()-((mouseEvent.getY()-yAxisShift)/yAxisStep);

        double Delta=0.3;

        if(mouseEvent.getEventType() == MouseEvent.MOUSE_DRAGGED){
            if(rectinitX.get() < mouseEvent.getX()){    
            newXlower=xAxis.getLowerBound()-Delta;
            newXupper=xAxis.getUpperBound()-Delta;
        }
        else if(rectinitX.get() > mouseEvent.getX()){    
            newXlower=xAxis.getLowerBound()+Delta;
            newXupper=xAxis.getUpperBound()+Delta;
        }    
        xAxis.setLowerBound( newXlower ); 
        xAxis.setUpperBound( newXupper ); 

        //========== Y-Axis Moving ============================

        if(rectinitY.get() < mouseEvent.getY()){    
            newYlower=yAxis.getLowerBound()+Delta/1000;
            newYupper=yAxis.getUpperBound()+Delta/1000;
        }
        else if(rectinitY.get() > mouseEvent.getY()){    
            newYlower=yAxis.getLowerBound()-Delta/1000;
            newYupper=yAxis.getUpperBound()-Delta/1000;
        }
        yAxis.setLowerBound(newYlower);
        yAxis.setUpperBound(newYupper);
        }
        rectinitX.set(mouseEvent.getX()); 
        rectinitY.set(mouseEvent.getY()); 

        if(mouseEvent.getEventType() == MouseEvent.MOUSE_MOVED && mouseEvent.getY()>yAxisShift && mouseEvent.getY()<yAxisShift+yAxis.getHeight() && mouseEvent.getX()>xAxisShift && mouseEvent.getX()<xAxisShift+xAxis.getWidth()){

        double XX=((mouseEvent.getX() - xAxisShift) / Tgap) + xAxis.getLowerBound();
        double YY=CurrentPrice;

        int XLB=(int) xAxis.getLowerBound();
        int XUB=(int) xAxis.getUpperBound();
        }
     } 
} 
}; 
private static double getSceneShift(Node node) { 
double shift = 0; 
do {  
    shift += node.getLayoutX();  
    node = node.getParent(); 
} while (node != null); 
return shift; 
}
private static String getHIstLOstY(XYChart.Series S,int XLowerBound,int XUpperBound) { 
double ValLOst=1000000;
double ValHIst=-1000000;
for(int i=XLowerBound; i<XUpperBound; i++){  
    double P=GetPrice(S,i);
    if(ValHIst<P){
        ValHIst=P;
    }
    if(ValLOst>P){
        ValLOst=P;
    }
}
return Double.toString(ValLOst) + "," + Double.toString(ValHIst);
} 
private static double GetPrice(XYChart.Series S,int IX) { 
Object SVal=S.getData().get(IX);
String Temp=SVal.toString().replaceAll("Data", "");
Temp=Temp.replace("[", "");
Temp=Temp.replace("]", "");
String[] TempArray=Temp.split(",");
return Double.parseDouble(TempArray[1]);     
}   
public static void main(String[] args) { 
launch(args);  
} 
}