Example usage for java.awt GridBagConstraints GridBagConstraints

List of usage examples for java.awt GridBagConstraints GridBagConstraints

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Introduction

In this page you can find the example usage for java.awt GridBagConstraints GridBagConstraints.

Prototype

public GridBagConstraints()

Source Link

Document

Creates a GridBagConstraint object with all of its fields set to their default value.

Usage

From source file:biomine.bmvis2.pipeline.NodeLabelOperation.java

public JComponent getSettingsComponent(final SettingsChangeCallback v, VisualGraph graph) {
    JPanel ret = new JPanel();
    ret.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    c.fill = GridBagConstraints.HORIZONTAL;
    c.weightx = 1;/*  ww w.jav a  2 s  .  co  m*/
    c.weighty = 0;
    c.gridy = 0;
    final Set<String> avail = graph.getAvailableNodeLabels();

    for (final String str : avail) {
        final JCheckBox box = new JCheckBox();
        box.setSelected(enabledLabels.contains(str));
        box.setAction(new AbstractAction(str) {
            public void actionPerformed(ActionEvent arg0) {
                if (box.isSelected() != enabledLabels.contains(str)) {
                    if (box.isSelected())
                        enabledLabels.add(str);
                    else
                        enabledLabels.remove(str);
                    v.settingsChanged(false);
                }
            }
        });
        ret.add(box, c);
        c.gridy++;
    }

    return ret;
}

From source file:algorithm.OaiOreSubmissionInformationPackage.java

private void createConfigurationPanel() {
    panel = new GUIPanel();
    panel.setLayout(new GridBagLayout());
    GridBagConstraints constraints = new GridBagConstraints();
    constraints.gridx = 0;/*  w w w.j a  v  a 2  s.  c o  m*/
    constraints.gridy = 0;
    constraints.anchor = GridBagConstraints.NORTHWEST;
    panel.add(new JLabel("Choose archiving technique:"), constraints);
    constraints.gridx++;
    ButtonGroup archivingGroup = new ButtonGroup();
    archivingGroup.add(tarButton);
    archivingGroup.add(zipButton);
    zipButton.setSelected(true);
    panel.add(zipButton, constraints);
    constraints.gridy++;
    panel.add(tarButton, constraints);
    constraints.gridx = 0;
    constraints.gridy++;
}

From source file:EditorPaneExample12.java

public EditorPaneExample12() {
    super("JEditorPane Example 12");

    pane = new JEditorPane();
    pane.setEditable(false); // Read-only
    getContentPane().add(new JScrollPane(pane), "Center");

    // Build the panel of controls
    JPanel panel = new JPanel();

    panel.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    c.gridwidth = 1;//from  www  . j ava  2s . c  om
    c.gridheight = 1;
    c.anchor = GridBagConstraints.EAST;
    c.fill = GridBagConstraints.NONE;
    c.weightx = 0.0;
    c.weighty = 0.0;

    JLabel urlLabel = new JLabel("URL: ", JLabel.RIGHT);
    panel.add(urlLabel, c);
    JLabel loadingLabel = new JLabel("State: ", JLabel.RIGHT);
    c.gridy = 1;
    panel.add(loadingLabel, c);
    JLabel typeLabel = new JLabel("Type: ", JLabel.RIGHT);
    c.gridy = 2;
    panel.add(typeLabel, c);
    c.gridy = 3;
    panel.add(new JLabel(LOAD_TIME), c);

    c.gridy = 4;
    c.gridwidth = 2;
    c.weightx = 1.0;
    c.anchor = GridBagConstraints.WEST;
    onlineLoad = new JCheckBox("Online Load");
    panel.add(onlineLoad, c);
    onlineLoad.setSelected(true);
    onlineLoad.setForeground(typeLabel.getForeground());

    c.gridx = 1;
    c.gridy = 0;
    c.anchor = GridBagConstraints.EAST;
    c.fill = GridBagConstraints.HORIZONTAL;

    urlCombo = new JComboBox();
    panel.add(urlCombo, c);
    urlCombo.setEditable(true);
    loadingState = new JLabel(spaces, JLabel.LEFT);
    loadingState.setForeground(Color.black);
    c.gridy = 1;
    panel.add(loadingState, c);
    loadedType = new JLabel(spaces, JLabel.LEFT);
    loadedType.setForeground(Color.black);
    c.gridy = 2;
    panel.add(loadedType, c);
    timeLabel = new JLabel("");
    c.gridy = 3;
    panel.add(timeLabel, c);

    getContentPane().add(panel, "South");

    // Allocate the empty tree model
    DefaultMutableTreeNode emptyRootNode = new DefaultMutableTreeNode("Empty");
    emptyModel = new DefaultTreeModel(emptyRootNode);

    // Create and place the heading tree
    tree = new JTree(emptyModel);
    tree.setPreferredSize(new Dimension(200, 200));
    getContentPane().add(new JScrollPane(tree), "East");

    // Change page based on combo selection
    urlCombo.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent evt) {
            if (populatingCombo == true) {
                return;
            }
            Object selection = urlCombo.getSelectedItem();
            loadNewPage(selection);
        }
    });

    // Listen for page load to complete
    pane.addPropertyChangeListener(new PropertyChangeListener() {
        public void propertyChange(PropertyChangeEvent evt) {
            if (evt.getPropertyName().equals("page")) {
                loadComplete();
                displayLoadTime();
                populateCombo(findLinks(pane.getDocument(), null));
                TreeNode node = buildHeadingTree(pane.getDocument());
                tree.setModel(new DefaultTreeModel(node));
                enableInput();
                loadingPage = false;
            }
        }
    });

    // Listener for tree selection
    tree.addTreeSelectionListener(new TreeSelectionListener() {
        public void valueChanged(TreeSelectionEvent evt) {
            TreePath path = evt.getNewLeadSelectionPath();
            if (path != null) {
                DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
                Object userObject = node.getUserObject();
                if (userObject instanceof Heading) {
                    Heading heading = (Heading) userObject;
                    try {
                        Rectangle textRect = pane.modelToView(heading.getOffset());
                        textRect.y += 3 * textRect.height;
                        pane.scrollRectToVisible(textRect);
                    } catch (BadLocationException e) {
                    }
                }
            }
        }
    });

    // Listener for hypertext events
    pane.addHyperlinkListener(new HyperlinkListener() {
        public void hyperlinkUpdate(HyperlinkEvent evt) {
            // Ignore hyperlink events if the frame is busy
            if (loadingPage == true) {
                return;
            }
            if (evt.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
                JEditorPane sp = (JEditorPane) evt.getSource();
                if (evt instanceof HTMLFrameHyperlinkEvent) {
                    HTMLDocument doc = (HTMLDocument) sp.getDocument();
                    doc.processHTMLFrameHyperlinkEvent((HTMLFrameHyperlinkEvent) evt);
                } else {
                    loadNewPage(evt.getURL());
                }
            } else if (evt.getEventType() == HyperlinkEvent.EventType.ENTERED) {
                pane.setCursor(handCursor);
            } else if (evt.getEventType() == HyperlinkEvent.EventType.EXITED) {
                pane.setCursor(defaultCursor);
            }
        }
    });
}

From source file:fxts.stations.ui.UIFrontEnd.java

/**
 * Creating new fxts.stations.ui.SideConstraints object or java.awt.GridBagConstraints by default.
 *
 * @return GridBagConstraints/*from  ww  w.  j a va 2 s  .co m*/
 */
public GridBagConstraints getSideConstraints() {
    try {
        return new SideConstraints();
    } catch (Exception e) {
        mLogger.error("Load layout error: " + e + " load default : java.awt.GridBagConstraints");
        return new GridBagConstraints();
    }
}

From source file:coolmap.canvas.datarenderer.renderer.impl.NumberToBoxPlot.java

public NumberToBoxPlot() {
    setName("Number to BoxPlot");
    setDescription("Use bar height to represent numeric values");

    //initialize UI
    configUI.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    c.fill = GridBagConstraints.HORIZONTAL;
    c.gridx = 0;/*from www  .  j av a  2  s  .co  m*/
    c.gridy = 0;
    c.ipadx = 5;
    c.ipady = 5;
    c.insets = new Insets(5, 5, 5, 5);
    c.gridwidth = 1;

    c.gridx = 0;
    c.gridy++;
    c.gridwidth = 1;
    //        JButton button = new JButton("Apply");
    //        configUI.add(button, c);
    //        button.setToolTipText("Apply preset data ranges");
    //        button.addActionListener(new ActionListener() {
    //
    //            @Override
    //            public void actionPerformed(ActionEvent e) {
    //                try {
    //                    MinMaxItem item = (MinMaxItem) (presetRangeComboBox.getSelectedItem());
    //                    minValueField.setText(item.getMinMax().lowerEndpoint().toString());
    //                    maxValueField.setText(item.getMinMax().upperEndpoint().toString());
    //                } catch (Exception ex) {
    //                    minValueField.setText("-1");
    //                    maxValueField.setText("1");
    //                }
    //
    //                updateRenderer();
    //            }
    //        });
    configUI.add(new JLabel("Preset range:"), c);

    c.gridx = 1;
    c.gridwidth = 1;
    presetRangeComboBox = new JComboBox();
    configUI.add(presetRangeComboBox, c);
    presetRangeComboBox.addItem(new DataMinMaxItem());
    presetRangeComboBox.addItem(new DefinedMinMaxItem(-1, 1));
    presetRangeComboBox.addItem(new DefinedMinMaxItem(0, 1));
    presetRangeComboBox.addItem(new DefinedMinMaxItem(-1, 0));
    presetRangeComboBox.addItem(new DefinedMinMaxItem(0, 100));

    presetRangeComboBox.addItemListener(new ItemListener() {

        @Override
        public void itemStateChanged(ItemEvent e) {
            try {
                MinMaxItem item = (MinMaxItem) (presetRangeComboBox.getSelectedItem());
                minValueField.setText(item.getMinMax().lowerEndpoint().toString());
                maxValueField.setText(item.getMinMax().upperEndpoint().toString());
            } catch (Exception ex) {
                minValueField.setText("-1");
                maxValueField.setText("1");
            }
        }
    });
    ////////////////////////////////////////////////////////////////////////////////
    //        c.weightx = 0.2;
    c.gridx = 0;
    c.gridy++;
    c.gridwidth = 1;
    configUI.add(new JLabel("Min value: "), c);
    c.gridx = 1;
    //        c.weightx = 0.3;
    configUI.add(minValueField, c);

    c.gridx = 0;
    c.gridy++;
    c.gridwidth = 1;
    configUI.add(new JLabel("Max value: "), c);
    c.gridx = 1;
    configUI.add(maxValueField, c);

    c.gridx = 0;
    c.gridy++;
    c.gridwidth = 1;
    configUI.add(new JLabel("Disect boundary: "), c);
    c.gridx = 1;
    configUI.add(disectField, c);
    disectField.setText("0");

    c.gridx = 0;
    c.gridy++;
    c.gridwidth = 3;

    JButton button = new JButton("Update", UI.getImageIcon("refresh"));
    configUI.add(button, c);
    button.addActionListener(new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {
            //hit button, redraw!

            updateRenderer();
        }
    });

}

From source file:com.xtructure.xevolution.gui.components.CollectArgsDialog.java

/**
 * Creates a new {@link CollectArgsDialog}
 * /*from  w  ww  . j  ava 2  s.  c om*/
 * @param frame
 *            the parent JFrame for the new {@link CollectArgsDialog}
 * @param statusBar
 *            the {@link StatusBar} to update (can be null)
 * @param title
 *            the title of the new {@link CollectArgsDialog}
 * @param xOptions
 *            the {@link Collection} of {@link XOption}s for which to
 *            collect user input
 */
public CollectArgsDialog(JFrame frame, final StatusBar statusBar, String title,
        final Collection<XOption<?>> xOptions) {
    super(frame, title, true);

    argComponents = new ArrayList<JComponent>();

    final CollectArgsDialog dialog = this;
    JPanel panel = new JPanel(new GridBagLayout());
    getContentPane().add(panel);
    GridBagConstraints c = new GridBagConstraints();
    c.insets = new Insets(3, 3, 3, 3);
    c.fill = GridBagConstraints.BOTH;

    int row = 0;
    for (XOption<?> xOption : xOptions) {
        if (xOption.getName() == null) {
            continue;
        }
        if (xOption.hasArg()) {
            JLabel label = new JLabel(xOption.getName());
            JTextField textField = new JTextField();
            textField.setName(xOption.getOpt());
            textField.setToolTipText(xOption.getDescription());
            argComponents.add(textField);
            c.gridx = 0;
            c.gridy = row;
            panel.add(label, c);
            c.gridx = 1;
            c.gridy = row;
            panel.add(textField, c);
        } else {
            JCheckBox checkBox = new JCheckBox(xOption.getName());
            checkBox.setName(xOption.getOpt());
            checkBox.setToolTipText(xOption.getDescription());
            argComponents.add(checkBox);
            c.gridx = 0;
            c.gridy = row;
            panel.add(checkBox, c);
        }
        row++;
    }

    JPanel buttonPanel = new JPanel();
    c.gridx = 1;
    c.gridy = row;
    panel.add(buttonPanel, c);

    JButton okButton = new JButton(new AbstractAction("OK") {
        private static final long serialVersionUID = 1L;

        @Override
        public void actionPerformed(ActionEvent e) {
            dialog.setVisible(false);
            if (statusBar != null) {
                statusBar.setMessage("building args...");
            }
            ArrayList<String> args = new ArrayList<String>();
            for (JComponent component : argComponents) {
                if (component instanceof JCheckBox) {
                    JCheckBox checkbox = (JCheckBox) component;
                    String opt = checkbox.getName();
                    if (checkbox.isSelected()) {
                        args.add("-" + opt);
                    }
                }
                if (component instanceof JTextField) {
                    JTextField textField = (JTextField) component;
                    String opt = textField.getName();
                    String text = textField.getText().trim();
                    if (!text.isEmpty()) {
                        args.add("-" + opt);
                        args.add("\"" + text + "\"");
                    }
                }
            }
            if (statusBar != null) {
                statusBar.setMessage("parsing args...");
            }
            try {
                Options options = new Options();
                for (XOption<?> xOpt : xOptions) {
                    options.addOption(xOpt);
                }
                XOption.parseArgs(options, args.toArray(new String[0]));
                dialog.success = true;
            } catch (ParseException e1) {
                e1.printStackTrace();
                dialog.success = false;
            }
            if (statusBar != null) {
                statusBar.clearMessage();
            }
        }
    });
    buttonPanel.add(okButton);
    getRootPane().setDefaultButton(okButton);

    buttonPanel.add(new JButton(new AbstractAction("Cancel") {
        private static final long serialVersionUID = 1L;

        @Override
        public void actionPerformed(ActionEvent e) {
            dialog.setVisible(false);
            if (statusBar != null) {
                statusBar.clearMessage();
            }
        }
    }));
    pack();
    setLocationRelativeTo(frame);
    setVisible(true);
}

From source file:de.costache.calendar.JCalendar.java

/**
 * Initializes the GUI//w  ww.  ja v a2  s  .co m
 */
private void initGui() {
    this.setBackground(Color.white);
    headerPane = new HeaderPanel(this);
    contentPane = new ContentPanel(this);

    headerPane.getIntervalLabel().setText(contentPane.getStrategy().getDisplayInterval());
    this.setLayout(new GridBagLayout());
    final GridBagConstraints c = new GridBagConstraints();
    c.gridx = 0;
    c.gridy = 0;
    c.weightx = 1;
    c.fill = GridBagConstraints.BOTH;
    add(headerPane, c);
    c.gridx = 0;
    c.gridy = 1;
    c.weighty = 0.9;
    c.insets = new Insets(10, 10, 10, 10);
    add(contentPane, c);
}

From source file:com.sec.ose.osi.ui.frm.main.identification.autoidentify.JPanImportSPDX.java

private JPanel getJPanMain() {
    if (jPanMain == null) {
        jPanMain = new JPanel();

        GridBagConstraints gridBagConstraints1 = new GridBagConstraints();
        gridBagConstraints1.fill = GridBagConstraints.BOTH;
        gridBagConstraints1.gridx = 0;//from   w w  w . j  a  v a2s.c om
        gridBagConstraints1.gridy = 0;
        GridBagConstraints gridBagConstraints2 = new GridBagConstraints();
        gridBagConstraints2.fill = GridBagConstraints.BOTH;
        gridBagConstraints2.gridx = 0;
        gridBagConstraints2.gridy = 1;
        GridBagConstraints gridBagConstraints3 = new GridBagConstraints();
        gridBagConstraints3.fill = GridBagConstraints.HORIZONTAL;
        gridBagConstraints3.gridx = 0;
        gridBagConstraints3.gridy = 2;

        jPanMain.add(getJScrollPaneImportSPDX(), gridBagConstraints1);

        jPanMain.add(getJPanelForOption(), gridBagConstraints2);
        jPanMain.add(getJButtonPanel(), gridBagConstraints3);

        addJPanSPDXLocation(null);
    }

    return jPanMain;
}

From source file:EditorPaneExample16.java

public EditorPaneExample16() {
    super("JEditorPane Example 16");

    pane = new JEditorPane();
    pane.setEditable(true); // Editable
    getContentPane().add(new JScrollPane(pane), "Center");

    // Build the panel of controls
    JPanel panel = new JPanel();

    panel.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    c.gridwidth = 1;//w w  w . j av  a  2s . co m
    c.gridheight = 1;
    c.anchor = GridBagConstraints.EAST;
    c.fill = GridBagConstraints.NONE;
    c.weightx = 0.0;
    c.weighty = 0.0;

    JLabel urlLabel = new JLabel("URL: ", JLabel.RIGHT);
    panel.add(urlLabel, c);
    JLabel loadingLabel = new JLabel("State: ", JLabel.RIGHT);
    c.gridy = 1;
    panel.add(loadingLabel, c);
    JLabel typeLabel = new JLabel("Type: ", JLabel.RIGHT);
    c.gridy = 2;
    panel.add(typeLabel, c);
    c.gridy = 3;
    panel.add(new JLabel(LOAD_TIME), c);

    c.gridy = 4;
    c.gridwidth = 2;
    c.weightx = 1.0;
    c.anchor = GridBagConstraints.WEST;
    onlineLoad = new JCheckBox("Online Load");
    panel.add(onlineLoad, c);
    onlineLoad.setSelected(true);
    onlineLoad.setForeground(typeLabel.getForeground());

    c.gridy = 5;
    c.gridwidth = 2;
    c.weightx = 1.0;
    c.anchor = GridBagConstraints.WEST;
    editableBox = new JCheckBox("Editable JEditorPane");
    panel.add(editableBox, c);
    editableBox.setSelected(true);
    editableBox.setForeground(typeLabel.getForeground());

    c.gridx = 1;
    c.gridy = 0;
    c.anchor = GridBagConstraints.EAST;
    c.fill = GridBagConstraints.HORIZONTAL;

    urlCombo = new JComboBox();
    panel.add(urlCombo, c);
    urlCombo.setEditable(true);
    loadingState = new JLabel(spaces, JLabel.LEFT);
    loadingState.setForeground(Color.black);
    c.gridy = 1;
    panel.add(loadingState, c);
    loadedType = new JLabel(spaces, JLabel.LEFT);
    loadedType.setForeground(Color.black);
    c.gridy = 2;
    panel.add(loadedType, c);
    timeLabel = new JLabel("");
    c.gridy = 3;
    panel.add(timeLabel, c);

    getContentPane().add(panel, "South");

    // Allocate the empty tree model
    DefaultMutableTreeNode emptyRootNode = new DefaultMutableTreeNode("Empty");
    emptyModel = new DefaultTreeModel(emptyRootNode);

    // Create and place the heading tree
    tree = new JTree(emptyModel);
    tree.setPreferredSize(new Dimension(200, 200));
    getContentPane().add(new JScrollPane(tree), "East");

    // Change page based on combo selection
    urlCombo.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent evt) {
            if (populatingCombo == true) {
                return;
            }
            Object selection = urlCombo.getSelectedItem();
            loadNewPage(selection);
        }
    });

    // Change editability based on the checkbox
    editableBox.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent evt) {
            pane.setEditable(editableBox.isSelected());
            pane.revalidate();
            pane.repaint();
        }
    });

    // Listen for page load to complete
    pane.addPropertyChangeListener(new PropertyChangeListener() {
        public void propertyChange(PropertyChangeEvent evt) {
            if (evt.getPropertyName().equals("page")) {
                loadComplete();
                displayLoadTime();
                populateCombo(findLinks(pane.getDocument(), null));
                TreeNode node = buildHeadingTree(pane.getDocument());
                tree.setModel(new DefaultTreeModel(node));
                enableInput();
                loadingPage = false;
            }
        }
    });

    // Listener for tree selection
    tree.addTreeSelectionListener(new TreeSelectionListener() {
        public void valueChanged(TreeSelectionEvent evt) {
            TreePath path = evt.getNewLeadSelectionPath();
            if (path != null) {
                DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
                Object userObject = node.getUserObject();
                if (userObject instanceof Heading) {
                    Heading heading = (Heading) userObject;
                    try {
                        Rectangle textRect = pane.modelToView(heading.getOffset());
                        textRect.y += 3 * textRect.height;
                        pane.scrollRectToVisible(textRect);
                    } catch (BadLocationException e) {
                    }
                }
            }
        }
    });

    // Listener for hypertext events
    pane.addHyperlinkListener(new HyperlinkListener() {
        public void hyperlinkUpdate(HyperlinkEvent evt) {
            // Ignore hyperlink events if the frame is busy
            if (loadingPage == true) {
                return;
            }
            if (evt.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
                JEditorPane sp = (JEditorPane) evt.getSource();
                if (evt instanceof HTMLFrameHyperlinkEvent) {
                    HTMLDocument doc = (HTMLDocument) sp.getDocument();
                    doc.processHTMLFrameHyperlinkEvent((HTMLFrameHyperlinkEvent) evt);
                } else {
                    loadNewPage(evt.getURL());
                }
            } else if (evt.getEventType() == HyperlinkEvent.EventType.ENTERED) {
                pane.setCursor(handCursor);
            } else if (evt.getEventType() == HyperlinkEvent.EventType.EXITED) {
                pane.setCursor(defaultCursor);
            }
        }
    });
}

From source file:EditorPaneExample15.java

public EditorPaneExample15() {
    super("JEditorPane Example 15");

    pane = new JEditorPane();
    pane.setEditable(false); // Read-only
    getContentPane().add(new JScrollPane(pane), "Center");

    // Build the panel of controls
    JPanel panel = new JPanel();

    panel.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    c.gridwidth = 1;//from  w  ww .jav a2 s .co m
    c.gridheight = 1;
    c.anchor = GridBagConstraints.EAST;
    c.fill = GridBagConstraints.NONE;
    c.weightx = 0.0;
    c.weighty = 0.0;

    JLabel urlLabel = new JLabel("URL: ", JLabel.RIGHT);
    panel.add(urlLabel, c);
    JLabel loadingLabel = new JLabel("State: ", JLabel.RIGHT);
    c.gridy = 1;
    panel.add(loadingLabel, c);
    JLabel typeLabel = new JLabel("Type: ", JLabel.RIGHT);
    c.gridy = 2;
    panel.add(typeLabel, c);
    c.gridy = 3;
    panel.add(new JLabel(LOAD_TIME), c);

    c.gridy = 4;
    c.gridwidth = 2;
    c.weightx = 1.0;
    c.anchor = GridBagConstraints.WEST;
    onlineLoad = new JCheckBox("Online Load");
    panel.add(onlineLoad, c);
    onlineLoad.setSelected(true);
    onlineLoad.setForeground(typeLabel.getForeground());

    c.gridx = 1;
    c.gridy = 0;
    c.anchor = GridBagConstraints.EAST;
    c.fill = GridBagConstraints.HORIZONTAL;

    urlCombo = new JComboBox();
    panel.add(urlCombo, c);
    urlCombo.setEditable(true);
    loadingState = new JLabel(spaces, JLabel.LEFT);
    loadingState.setForeground(Color.black);
    c.gridy = 1;
    panel.add(loadingState, c);
    loadedType = new JLabel(spaces, JLabel.LEFT);
    loadedType.setForeground(Color.black);
    c.gridy = 2;
    panel.add(loadedType, c);
    timeLabel = new JLabel("");
    c.gridy = 3;
    panel.add(timeLabel, c);

    getContentPane().add(panel, "South");

    // Allocate the empty tree model
    DefaultMutableTreeNode emptyRootNode = new DefaultMutableTreeNode("Empty");
    emptyModel = new DefaultTreeModel(emptyRootNode);

    // Create and place the heading tree
    tree = new JTree(emptyModel);
    tree.setPreferredSize(new Dimension(200, 200));
    getContentPane().add(new JScrollPane(tree), "East");

    // Change page based on combo selection
    urlCombo.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent evt) {
            if (populatingCombo == true) {
                return;
            }
            Object selection = urlCombo.getSelectedItem();
            loadNewPage(selection);
        }
    });

    // Listen for page load to complete
    pane.addPropertyChangeListener(new PropertyChangeListener() {
        public void propertyChange(PropertyChangeEvent evt) {
            if (evt.getPropertyName().equals("page")) {
                loadComplete();
                displayLoadTime();
                populateCombo(findLinks(pane.getDocument(), null));
                TreeNode node = buildHeadingTree(pane.getDocument());
                tree.setModel(new DefaultTreeModel(node));
                enableInput();
                loadingPage = false;
            }
        }
    });

    // Listener for tree selection
    tree.addTreeSelectionListener(new TreeSelectionListener() {
        public void valueChanged(TreeSelectionEvent evt) {
            TreePath path = evt.getNewLeadSelectionPath();
            if (path != null) {
                DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
                Object userObject = node.getUserObject();
                if (userObject instanceof Heading) {
                    Heading heading = (Heading) userObject;
                    try {
                        Rectangle textRect = pane.modelToView(heading.getOffset());
                        textRect.y += 3 * textRect.height;
                        pane.scrollRectToVisible(textRect);
                    } catch (BadLocationException e) {
                    }
                }
            }
        }
    });

    // Listener for hypertext events
    pane.addHyperlinkListener(new HyperlinkListener() {
        public void hyperlinkUpdate(HyperlinkEvent evt) {
            // Ignore hyperlink events if the frame is busy
            if (loadingPage == true) {
                return;
            }
            if (evt.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
                JEditorPane sp = (JEditorPane) evt.getSource();
                if (evt instanceof HTMLFrameHyperlinkEvent) {
                    HTMLDocument doc = (HTMLDocument) sp.getDocument();
                    doc.processHTMLFrameHyperlinkEvent((HTMLFrameHyperlinkEvent) evt);
                } else {
                    loadNewPage(evt.getURL());
                }
            } else if (evt.getEventType() == HyperlinkEvent.EventType.ENTERED) {
                pane.setCursor(handCursor);
            } else if (evt.getEventType() == HyperlinkEvent.EventType.EXITED) {
                pane.setCursor(defaultCursor);
            }
        }
    });
}