/*
 * Copyright (c) 2010, 2011, Oracle  and/or its affiliates. All rights reserved.
 */
package tests;

import java.util.ArrayList;
import java.util.List;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.stage.Stage;

public class TreeViewTest extends Application {
    
    @Override
    public void start(Stage stage) {
        stage.setTitle("Sample");
        Scene scene = new Scene(new Group(), 500, 500);
        
        final TreeItem<Label> rootItem = new TreeItem<>(new Label("Root Item"));
        rootItem.setExpanded(true);
        final List<TreeItem<Label>> treeItems = new ArrayList<>();
        for (int i = 0; i < 100; i++) {
            final TreeItem<Label> item = new TreeItem<>(new Label("Item " + i));
            treeItems.add(item);
            rootItem.getChildren().add(item);
        }
        
        final TreeView<Label> treeView = new TreeView(rootItem);
        treeView.setLayoutX(10);
        treeView.setLayoutY(10);
        treeView.setPrefHeight(100);
        
        final Button button = new Button("Click to scroll");
        button.setLayoutX(300);
        button.setLayoutY(10);
        button.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                int random = (int) (Math.random() * 100);
                final TreeItem<Label> item = treeItems.get(random);
                System.out.println("=== Scroll to " + item.getValue().getText());
                treeView.scrollTo(treeView.getRow(item));
                treeView.getSelectionModel().select(item);
            }
        });
        
        Group root = (Group) scene.getRoot();
        root.getChildren().clear();
        root.getChildren().addAll(treeView, button);
        stage.setScene(scene);
        stage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Application.launch(args);
    }
}