How can I create dynamic events for a group/list?

Hey,.
ATM I'm programming request a bit where I add items to my center pane.

Simpyfied I got:

-Center pane: here are the items that appear on right click in the lower pane. This component must serve something like a playground where you can drag and drop and associate items in the bottom pane
-Low component: here, I got approximately 180 items which are quite equal. It's smth like a menu of items that you can use. I realized the java classes extended from a parent with v.f. dispute class.

What I want:
I want to create an event handler for EACH of the items 'menu' 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, it does not work...

Now my question:
How can I solve this problem? Y at - it no option to listen to all the elements of a group without hard-coding every single listener?

Thanks for your help,
Martin

Hello user,.

Why you expected you it wouldn't work?
You have an example with the '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 is a class of the basic example...

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() {
                    public void handle(MouseEvent event) {
                        System.out.println("test click");
                    }
                });
        }

        pane.getChildren().add(vBox);
        mainStage.setScene(scene);
        mainStage.setVisible(true);
    }
}

Niculaiu

Tags: Java

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How can I create dynamic events for a group/list?

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