gt:              String oldValue, String newValue) -> {
context: /*
   * Copyright (c) 2008, 2016, Oracle and/or its affiliates.
   * All rights reserved. Use is subject to license terms.
   *
   * This file is available and licensed under the following license:
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   *  - Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *  - Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the distribution.
   *  - Neither the name of Oracle Corporation nor the names of its
   *    contributors may be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package ensemble.samples.language.swing;
  
  import java.awt.BorderLayout;
  import java.awt.Color;
  import java.awt.Component;
  import java.awt.Dimension;
  import java.text.DecimalFormat;
  import javafx.application.Platform;
  import javafx.beans.value.ChangeListener;
  import javafx.beans.value.ObservableValue;
  import javafx.collections.FXCollections;
  import javafx.collections.ObservableList;
  import javafx.embed.swing.JFXPanel;
  import javafx.event.ActionEvent;
  import javafx.event.EventHandler;
  import javafx.geometry.HPos;
  import javafx.geometry.Insets;
  import javafx.geometry.VPos;
  import javafx.scene.Scene;
  import javafx.scene.chart.BarChart;
  import javafx.scene.chart.CategoryAxis;
  import javafx.scene.chart.Chart;
  import javafx.scene.chart.NumberAxis;
  import javafx.scene.chart.XYChart;
  import javafx.scene.control.Button;
  import javafx.scene.control.Label;
  import javafx.scene.control.TextField;
  import javafx.scene.layout.ColumnConstraints;
  import javafx.scene.layout.GridPane;
  import javafx.scene.layout.Pane;
  import javafx.scene.layout.Priority;
  import javafx.scene.web.WebEngine;
  import javafx.scene.web.WebView;
  
  import javax.swing.JApplet;
  import javax.swing.JFrame;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import javax.swing.JScrollPane;
  import javax.swing.JSplitPane;
  import javax.swing.JTable;
  import javax.swing.JTabbedPane;
  import javax.swing.SwingUtilities;
  import javax.swing.UIManager;
  import javax.swing.event.TableModelEvent;
  import javax.swing.event.TableModelListener;
  import javax.swing.table.DefaultTableCellRenderer;
  
  /**
   * SwingInterop
   *
   * Note using the browser might require setting the properties
   *  - http.proxyHost
   *  - http.proxyPort
   *
   * e.g. -Dhttp.proxyHost=webcache.mydomain.com -Dhttp.proxyPort=8080
   *
   */
  public class SwingInterop extends JApplet {
  
      private static final int PANEL_WIDTH = 675;
      private static final int PANEL_HEIGHT = 400;
      private static final int TABLE_PANEL_HEIGHT = 100;
      private static JFXPanel chartFxPanel;
      private static JFXPanel browserFxPanel;
      private static SampleTableModel tableModel;
      private Chart chart;
      private Pane browser;
  
      @Override
      public void init() {
          tableModel = new SampleTableModel();
          // create javafx panel for charts
          chartFxPanel = new JFXPanel();
          chartFxPanel.setPreferredSize(new Dimension(PANEL_WIDTH, PANEL_HEIGHT));
  
          // create javafx panel for browser
          browserFxPanel = new JFXPanel();
  
          //create tabbed pane
          JTabbedPane tabbedPane = new JTabbedPane();
  
          //JTable
          JTable table = new JTable(tableModel);
          table.setAutoCreateRowSorter(true);
          table.setGridColor(Color.DARK_GRAY);
          DecimalFormatRenderer renderer = new DecimalFormatRenderer();
          renderer.setHorizontalAlignment(JLabel.RIGHT);
          for (int i = 0; i < table.getColumnCount(); i++) {
              table.getColumnModel().getColumn(i).setCellRenderer(renderer);
          }
          JScrollPane tablePanel = new JScrollPane(table);
          tablePanel.setPreferredSize(new Dimension(PANEL_WIDTH,
                                                    TABLE_PANEL_HEIGHT));
  
          JPanel chartTablePanel = new JPanel();
          chartTablePanel.setLayout(new BorderLayout());
  
          //Split pane that holds both chart and table
          JSplitPane jsplitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
          jsplitPane.setTopComponent(chartTablePanel);
          jsplitPane.setBottomComponent(tablePanel);
          jsplitPane.setDividerLocation(410);
          chartTablePanel.add(chartFxPanel, BorderLayout.CENTER);
  
          tabbedPane.addTab("JavaFX Chart and Swing JTable", jsplitPane);
          tabbedPane.addTab("Web Browser", browserFxPanel);
  
          add(tabbedPane, BorderLayout.CENTER);
  
          // create JavaFX scene
          Platform.runLater(new Runnable() {
              public void run() {
                  createScene();
              }
          });
      }
  
      public static void main(String[] args) {
          SwingUtilities.invokeLater(new Runnable() {
  
              @Override
              public void run() {
                  try {
                      final String ui =
                          "com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel";
                      UIManager.setLookAndFeel(ui);
                  } catch (Exception e) {}
  
                  JFrame frame = new JFrame("JavaFX in Swing");
                  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
                  JApplet applet = new SwingInterop();
                  applet.init();
  
                  frame.setContentPane(applet.getContentPane());
  
                  frame.pack();
                  frame.setLocationRelativeTo(null);
                  frame.setVisible(true);
  
                  applet.start();
              }
          });
      }
  
      private void createScene() {
          chart = createBarChart();
          chartFxPanel.setScene(new Scene(chart));
          browser = createBrowser();
          browserFxPanel.setScene(new Scene(browser));
      }
  
      private BarChart createBarChart() {
          CategoryAxis xAxis = new CategoryAxis();
          ObservableList<String> xCategories =
              FXCollections.observableArrayList(tableModel.getColumnNames());
          xAxis.setCategories(xCategories);
          xAxis.setLabel("Year");
  
          double tickUnit = tableModel.getTickUnit();
  
          NumberAxis yAxis = new NumberAxis();
          yAxis.setTickUnit(tickUnit);
          yAxis.setLabel("Units Sold");
  
          final BarChart bChart = new BarChart(xAxis, yAxis,
                                               tableModel.getBarChartData());
          final TableModelListener tableListener = (TableModelEvent e) -> {
                  if (e.getType() == TableModelEvent.UPDATE) {
                      final int row = e.getFirstRow();
                      final int column = e.getColumn();
                      final Object value =
                          ((SampleTableModel) e.getSource()).getValueAt(row,
                                                                        column);
                      Platform.runLater(new Runnable() {
                          @Override
                          public void run() {
                              XYChart.Series<String, Number> s =
                                  (XYChart.Series<String, Number>)
                                      bChart.getData().get(row);
                              BarChart.Data data = s.getData().get(column);
                              data.setYValue(value);
                          }
                      });
                  }
              };
          tableModel.addTableModelListener(tableListener);
          return bChart;
      }
  
      private Pane createBrowser() {
          Double widthDouble = new Integer(PANEL_WIDTH).doubleValue();
          Double heightDouble = new Integer(PANEL_HEIGHT).doubleValue();
          WebView view = new WebView();
          view.setMinSize(widthDouble, heightDouble);
          view.setPrefSize(widthDouble, heightDouble);
          final WebEngine eng = view.getEngine();
          final String message = "Do you need to specify web proxy information?";
          final Label warningLabel = new Label(message);
          eng.load("http://www.oracle.com/us/index.html");
  
          final ChangeListener<Number> handler =
              (ObservableValue<? extends Number> observable,
               Number oldValue, Number newValue) -> {
                  if (warningLabel.isVisible()) {
                      warningLabel.setVisible(false);
                  }
              };
          eng.getLoadWorker().progressProperty().addListener(handler);
  
          final String url = "http://www.oracle.com/us/index.html";
          final TextField locationField = new TextField(url);
          locationField.setMaxHeight(Double.MAX_VALUE);
          Button goButton = new Button("Go");
          goButton.setMinWidth(Button.USE_PREF_SIZE);
          goButton.setDefaultButton(true);
          EventHandler<ActionEvent> goAction = (ActionEvent event) -> {
                  eng.load(locationField.getText().startsWith("http://") ?
                           locationField.getText() :
                           "http://" + locationField.getText());
              };
          goButton.setOnAction(goAction);
          locationField.setOnAction(goAction);
          final ChangeListener<String> webListener =
              (ObservableValue<? extends String> observable,
  