How can I create events dynamic for a Group/List?

Question

Hey,
atm I'm programming a little application where i want to add elements to my center-pane.
Simpyfied I got:
- Center Pane : here shall the elements appear on right click in bottom-pane. This pane shall be used as anything like a playground where you can drag/drop and connect items from the bottom-pane
- Bottom Pane: here I got about 180 elements which are quite equal. This is sth like a menu of items which you can use. I realised them in java classes extended from a parent class with differend calulations.
What I want:
I want to create an event handler for EACH of the "menu" elements dynamically. Just sth like:
    for (int i = 0; i < basic_menu_list.size(); i++)
      final Element el = hbox_bottom.getChildren().get(i);
      hbox_bottom.getChildren().get(i).setOnMouseClicked(new EventHandler<MouseEvent>()
        public void handle(MouseEvent event)
          if (event.isSecondaryButtonDown())
            playground.add(el);
            redrawPlayground();
    }But as i expected this doesnt work...
Now my question:
How can I solve this problem? Is there any option to listen to all elements of a group without hard-coding every single listener?
Thanks for your help,
Martin

Answer 1

Hello User,
Why did you expect that it wouldn't work?
You have an example with "transition" apply on a bunch of circles in the Getting Started with JavaFx (http://download.oracle.com/javafx/2.0/get_started/jfxpub-get_started.htm)
Here a basic example class...
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.TextBox;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.Pane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class HelloWorld extends Application {
    //~ ----------------------------------------------------------------------------------------------------------------
    //~ Methods
    //~ ----------------------------------------------------------------------------------------------------------------
    public static void main(String[] args) {
        // Entry point
        Application.launch(args);
    @Override
    public void start(Stage mainStage) throws Exception {
        Pane pane = new Pane();
        Scene scene = new Scene(pane, 200, 200);
        VBox vBox = new VBox();
        TextBox input1 = new TextBox();
        TextBox input2 = new TextBox();
        vBox.getChildren().addAll(input1, input2);
        for (Node input : vBox.getChildren()) {
            input.setOnMouseClicked(new EventHandler<MouseEvent>() {
                    public void handle(MouseEvent event) {
                        System.out.println("test click");
        pane.getChildren().add(vBox);
        mainStage.setScene(scene);
        mainStage.setVisible(true);
}Niculaiu