private void createNewStage(int level, Stage owner, boolean onTop) {
Stage stage = new Stage();
stage.initOwner(owner);
stage.setTitle(level == 0 ? "Root" : "Child " + level);
stage.setAlwaysOnTop(onTop);
VBox root = new VBox(15);
root.setPadding(new Insets(20));
Scene scene = new Scene(root);
stage.setScene(scene);
ToggleButton onTopButton = new ToggleButton(onTop ? DISABLE_ON_TOP : ENABLE_ON_TOP);
onTopButton.setSelected(onTop);
stage
.alwaysOnTopProperty()
.addListener(
(observable, oldValue, newValue) -> {
onTopButton.setSelected(newValue);
onTopButton.setText(newValue ? DISABLE_ON_TOP : ENABLE_ON_TOP);
});
onTopButton.setOnAction(event -> stage.setAlwaysOnTop(!stage.isAlwaysOnTop()));
CheckBox box = new CheckBox("Child stage always on top");
box.setSelected(true);
Button newStageButton = new Button("Open child stage");
newStageButton.setOnAction(event -> createNewStage(level + 1, stage, box.isSelected()));
root.getChildren().addAll(onTopButton, box, newStageButton);
stage.show();
}
