/*
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 * and open the template in the editor.
 */

package tests;

import javafx.application.Application;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.collections.ListChangeListener;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.SelectionMode;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeView;
import javafx.scene.input.KeyEvent;
import javafx.stage.Stage;

/**
 *
 * @author sjiang
 */
public class MyTreeViewTest2 extends Application {
    public static void main(String[] args) throws Exception {
        Application.launch(args);
    }

    @Override
    public void start(Stage stage) throws Exception {
        final TreeView treeView1 = new TreeView();
        treeView1.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
        treeView1.setPrefSize(300, 300);

        TreeItem<String> root1 = new TreeItem<String>("Root");

        root1.setExpanded(true);
        addChildren(root1, "child");
        for (TreeItem child : root1.getChildren()) {
            addChildren(child, (String)child.getValue());
            child.setExpanded(true);
        }

        treeView1.setRoot(root1);

        treeView1.getSelectionModel().getSelectedItems().addListener(new InvalidationListener() {

            public void invalidated(Observable observable) {
                System.out.println("\n---jsl-InvalidationListener observable="+observable);
                System.out.println("---jsl-InvalidationListener getSelectedItems="+treeView1.getSelectionModel().getSelectedItems());

            }
        });

        treeView1.getSelectionModel().getSelectedItems().addListener(new ListChangeListener() {
            public void onChanged(Change c) {
                System.out.println("---jsl-ListChangeListener getSelectedItems="+treeView1.getSelectionModel().getSelectedItems());

                System.out.println("---jsl-ListChangeListener c.getList()"+c.getList());
//                System.out.println("---jsl-ListChangeListener c.getAddedSubList()="+c.getAddedSubList());
//                System.out.println("---jsl-ListChangeListener c.getRemoved()="+c.getRemoved());
            }
        });

//        treeView1.addEventHandler(KeyEvent.KEY_TYPED, new EventHandler<KeyEvent>() {
//            public void handle(KeyEvent event) {
//                treeView1.getSelectionModel().select(0);
//                treeView1.getSelectionModel().select(treeView1.getTreeItem(1));
//                System.out.println("---jsl-EventHandler "+treeView1.getSelectionModel().getSelectedItems());
//            }
//
//        });

//        HBox hbox = new HBox();
//        hbox.getChildren().setAll(treeView1);
        Scene scene = new Scene(treeView1);
        stage.setScene(scene);
        stage.show();
    }

    private void addChildren(TreeItem parent, String name) {
        for (int i=0; i<3; i++) {
            TreeItem<String> ti = new TreeItem<String>(name+"-"+i);
            parent.getChildren().add(ti);
        }
    }
}