FX 2.x : How do I remove SplitPane? - button

Question

I can add SplitPane in a XYChart by clicking the "Add Pane" button, and it works fine.
Now I would like to remove SplitPane by clicking the "Remove pane" button.
Here is full code
public class SplitPaneFxTest extends Application {
SplitPane splitPane = new SplitPane();
double percSplit = 0.50;
int idxSplit = 0;
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
launch(SplitPaneFxTest.class, args);
}
#Override
public void start(Stage primaryStage) {
primaryStage.setTitle("SplitPane Test");
Group root = new Group();
Scene scene = new Scene(root, 800, 650, Color.WHITE);
//CREATE THE SPLITPANE
splitPane.setPrefSize(scene.getWidth(), scene.getHeight());
splitPane.setOrientation(Orientation.VERTICAL);
//ADD LAYOUTS AND ASSIGN CONTAINED CONTROLS
BorderPane upperPane = new BorderPane();
HBox hbox = new HBox();
Button button1 = new Button("Add Pane");
hbox.getChildren().addAll(button1);
upperPane.setTop(hbox);
Button button2 = new Button("Remove Pane");
hbox.getChildren().addAll(button2);
upperPane.setTop(hbox);
BorderPane lowerPane = new BorderPane();
splitPane.getItems().addAll(upperPane);
splitPane.setDividerPosition(idxSplit, 0.70);
idxSplit++;
splitPane.getItems().addAll(lowerPane);
idxSplit++;
root.getChildren().add(splitPane);
primaryStage.setScene(scene);
primaryStage.show();
button1.setOnAction(new EventHandler<ActionEvent>() {
#Override public void handle(ActionEvent e) {
BorderPane myborderpane = new BorderPane();
splitPane.getItems().addAll(myborderpane);
ObservableList<SplitPane.Divider> splitDiv = splitPane.getDividers();
System.out.println("splitDiv.size() "+splitDiv.size());
percSplit = 1/(double)(splitDiv.size()+1);
for (int i = 0; i< splitDiv.size(); i++) {
System.out.println("i "+i+" percSplit "+percSplit);
splitPane.setDividerPosition(i, percSplit);
percSplit += 1/(double)(splitDiv.size()+1);
}
}
});
}
}
Any help really appreciated.

Answer 1

You can store a list of inner panes and remove them based on this list:
final List<Pane> panes = new ArrayList<Pane>();
button1.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent e) {
BorderPane myborderpane = new BorderPane();
//adding
panes.add(myborderpane);
splitPane.getItems().addAll(myborderpane);
ObservableList<SplitPane.Divider> splitDiv = splitPane.getDividers();
System.out.println("splitDiv.size() " + splitDiv.size());
percSplit = 1 / (double) (splitDiv.size() + 1);
for (int i = 0; i < splitDiv.size(); i++) {
System.out.println("i " + i + " percSplit " + percSplit);
splitPane.setDividerPosition(i, percSplit);
percSplit += 1 / (double) (splitDiv.size() + 1);
}
}
});
button2.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent t) {
if (panes.size() > 0) {
// removing from both list and splitPane childs
Pane toDelete = panes.remove(0);
splitPane.getItems().remove(toDelete);
}
}
});
Also you can remove panes directly from ScrollPane.getChildren() but it can involve tricky and unreliable code to determine which pane to remove.