/*
 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 */
package treeviewnoscrollevent;

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeView;
import javafx.scene.input.ScrollEvent;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

/**
 *
 * @author asakharu
 */
public class TreeViewNoScrollEvent extends Application {
    
    @Override
    public void start(Stage primaryStage) {
        TreeView<String> treeView = new TreeView<>();
        
        TreeItem<String> rootItem = new TreeItem<>("ROOT");
        TreeItem<String> numbers = new TreeItem<>("Numbers");
        TreeItem<String> letters = new TreeItem<>("Letters");
        
        for(String s: LETTERS)
        {
            letters.getChildren().add(new TreeItem<String>(s));
        }
        for(String s: NUMBERS)
        {
            numbers.getChildren().add(new TreeItem<String>(s));
        }
        rootItem.getChildren().addAll(numbers, letters);
        treeView.setRoot(rootItem);
        
        treeView.setOnScroll(new EventHandler<ScrollEvent>() {

            @Override
            public void handle(ScrollEvent t) {
                System.out.println("Scrolled");
            }
        });
                
        StackPane root = new StackPane();
        root.getChildren().add(treeView);
        
        Scene scene = new Scene(root, 250, 300);
        
        primaryStage.setTitle("TreeView no scroll event");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * The main() method is ignored in correctly deployed JavaFX application.
     * main() serves only as fallback in case the application can not be
     * launched through deployment artifacts, e.g., in IDEs with limited FX
     * support. NetBeans ignores main().
     *
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
    
    public static final String[] LETTERS = {"a", "b", "c", "d", "e", "f", "g", 
        "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", 
        "w", "x", "y", "z"};
    public static final String[] NUMBERS = {"1", "2", "3", "4", "5", "6", "7", 
        "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20"};
}