CODEWITHSUNDEEP
javajavafx
Ernio
Ernio

Reputation: 978

Make mouse events detectable on whole node stack

I have problem where I have BorderPane in which center's there is TabPane with Tabs that have various other Nodes (say another BorderPane for example).

When I try to for example use:

parentBorderPane.setOnMouseDragged(e -> System.out.println("DRAGGING"));
parentBorderPane.setOnMouseMoved(e -> System.out.println("MOVING"));

...events never occur (I can catch them on currently opened Tab's content, but that's not what I want).

I require to know when such events occur in BOTH places, (1st event goes through content of Tab, then through containing TabPane, then through main parent BorderPane). So I can't use (on any of children):

this.setMouseTransparent(true);

How can this be solved?

EDIT

Let me add that main problem is with TabPane - its the one that doesn't pass events to next node in stack.

EDIT 2

public class T extends Application
{
    public static void main(String[] args) throws Exception
    {
        launch(args);
    }

    @Override
    public void start(Stage stage) throws Exception
    {
        stage.setTitle("Test");
        Scene scene = new Scene(this.working()); // change to this.problem();
        stage.setScene(scene);
        stage.show();
    }

    private BorderPane working()
    {
        BorderPane main = new BorderPane();
        main.setPrefSize(800, 600);
        main.setOnMouseMoved(e -> System.out.println("MOVING ON MAIN"));

        BorderPane sub = new BorderPane();
        sub.setOnMouseMoved(e -> System.out.println("MOVING ON SUB"));
        main.setCenter(sub);

        return main;
    }

    private BorderPane problem()
    {
        BorderPane main = new BorderPane();
        main.setPrefSize(800, 600);
        main.setOnMouseMoved(e -> System.out.println("MOVING ON MAIN"));

        BorderPane sub = new BorderPane();
        sub.setOnMouseMoved(e -> System.out.println("MOVING ON SUB"));
        main.setCenter(sub);

        TabPane tabs = new TabPane();
        tabs.setOnMouseMoved(e -> System.out.println("MOVING ON TABS"));
        sub.setCenter(tabs);

        return main;
    }
}

working() - Normal Panes stacked on each other will work as they should (pass events from top to bottom of stack).

problem() - Because TabPane is sub-class of Control (which I am currently investagating), it stops mouse events and doesn't let parents see them.

Upvotes: 0

Views: 46

Answers (1)

Ernio
Ernio

Reputation: 978

I found solution - instead of trying to receive event durnig bubble-up phase (child->parent behind) where Control (parent class of TabPane) consumes it, I can use event filters and catch event before its consumed.

Upvotes: 2

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