Example usage for javax.swing DefaultListModel add

List of usage examples for javax.swing DefaultListModel add

Introduction

In this page you can find the example usage for javax.swing DefaultListModel add.

Prototype

public void add(int index, E element) 

Source Link

Document

Inserts the specified element at the specified position in this list.

Usage

From source file:DropModeINSERT.java

public static void main(String[] args) {
    JPanel north = new JPanel();
    north.add(new JLabel("Drag from here:"));
    JTextField field = new JTextField(10);
    field.setDragEnabled(true);//ww  w .  j a v a2  s  . c  om
    north.add(field);

    final DefaultListModel listModel = new DefaultListModel();
    listModel.addElement("first");
    listModel.addElement("second");
    final JList list = new JList(listModel);
    list.setDragEnabled(true);

    list.setTransferHandler(new TransferHandler() {
        public boolean canImport(TransferHandler.TransferSupport support) {
            if (!support.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                return false;
            }
            JList.DropLocation dl = (JList.DropLocation) support.getDropLocation();
            if (dl.getIndex() == -1) {
                return false;
            } else {
                return true;
            }
        }

        public boolean importData(TransferHandler.TransferSupport support) {
            if (!canImport(support)) {
                return false;
            }

            Transferable transferable = support.getTransferable();
            String data;
            try {
                data = (String) transferable.getTransferData(DataFlavor.stringFlavor);
            } catch (Exception e) {
                return false;
            }

            JList.DropLocation dl = (JList.DropLocation) support.getDropLocation();
            int index = dl.getIndex();
            if (dl.isInsert()) {
                listModel.add(index, data);
            } else {
                listModel.set(index, data);
            }

            // Scroll to display the element that was dropped
            Rectangle r = list.getCellBounds(index, index);
            list.scrollRectToVisible(r);
            return true;
        }
    });
    JScrollPane center = new JScrollPane();
    center.setViewportView(list);

    list.setDropMode(DropMode.INSERT);
    JPanel cp = new JPanel();
    cp.setLayout(new BorderLayout());
    cp.add(north, BorderLayout.NORTH);
    cp.add(center, BorderLayout.CENTER);
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setContentPane(cp);
    frame.pack();
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String[] args) {
    final DefaultListModel<String> model = new DefaultListModel<>();
    final JList<String> list = new JList<>(model);
    JFrame f = new JFrame();

    model.addElement("A");
    model.addElement("B");
    model.addElement("C");
    model.addElement("D");
    model.addElement("E");

    JPanel panel = new JPanel();
    panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS));

    JPanel leftPanel = new JPanel();
    JPanel rightPanel = new JPanel();

    leftPanel.setLayout(new BorderLayout());
    rightPanel.setLayout(new BoxLayout(rightPanel, BoxLayout.Y_AXIS));

    list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    list.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));

    list.addMouseListener(new MouseAdapter() {
        public void mouseClicked(MouseEvent e) {
            if (e.getClickCount() == 2) {
                int index = list.locationToIndex(e.getPoint());
                Object item = model.getElementAt(index);
                String text = JOptionPane.showInputDialog("Rename item", item);
                String newitem = "";
                if (text != null)
                    newitem = text.trim();
                else
                    return;

                if (!newitem.isEmpty()) {
                    model.remove(index);
                    model.add(index, newitem);
                    ListSelectionModel selmodel = list.getSelectionModel();
                    selmodel.setLeadSelectionIndex(index);
                }//w ww  .j  a  va  2  s  .  c om
            }
        }
    });
    leftPanel.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));

    leftPanel.add(new JScrollPane(list));

    JButton removeall = new JButton("Remove All");
    JButton add = new JButton("Add");
    JButton rename = new JButton("Rename");
    JButton delete = new JButton("Delete");

    add.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            String text = JOptionPane.showInputDialog("Add a new item");
            String item = null;

            if (text != null)
                item = text.trim();
            else
                return;

            if (!item.isEmpty())
                model.addElement(item);
        }
    });

    delete.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent event) {
            ListSelectionModel selmodel = list.getSelectionModel();
            int index = selmodel.getMinSelectionIndex();
            if (index >= 0)
                model.remove(index);
        }

    });

    rename.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            ListSelectionModel selmodel = list.getSelectionModel();
            int index = selmodel.getMinSelectionIndex();
            if (index == -1)
                return;
            Object item = model.getElementAt(index);
            String text = JOptionPane.showInputDialog("Rename item", item);
            String newitem = null;

            if (text != null) {
                newitem = text.trim();
            } else
                return;

            if (!newitem.isEmpty()) {
                model.remove(index);
                model.add(index, newitem);
            }
        }
    });

    removeall.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            model.clear();
        }
    });

    rightPanel.add(add);
    rightPanel.add(rename);
    rightPanel.add(delete);
    rightPanel.add(removeall);

    rightPanel.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 20));

    panel.add(leftPanel);
    panel.add(rightPanel);

    f.add(panel);

    f.setSize(350, 250);
    f.setLocationRelativeTo(null);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);

}

From source file:List.java

public static void main(String[] args) {
    final DefaultListModel model = new DefaultListModel();
    final JList list = new JList(model);
    JFrame f = new JFrame();
    f.setTitle("JList models");

    model.addElement("A");
    model.addElement("B");
    model.addElement("C");
    model.addElement("D");
    model.addElement("E");

    JPanel panel = new JPanel();
    panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS));

    JPanel leftPanel = new JPanel();
    JPanel rightPanel = new JPanel();

    leftPanel.setLayout(new BorderLayout());
    rightPanel.setLayout(new BoxLayout(rightPanel, BoxLayout.Y_AXIS));

    list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    list.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));

    list.addMouseListener(new MouseAdapter() {
        public void mouseClicked(MouseEvent e) {
            if (e.getClickCount() == 2) {
                int index = list.locationToIndex(e.getPoint());
                Object item = model.getElementAt(index);
                String text = JOptionPane.showInputDialog("Rename item", item);
                String newitem = "";
                if (text != null)
                    newitem = text.trim();
                else
                    return;

                if (!newitem.isEmpty()) {
                    model.remove(index);
                    model.add(index, newitem);
                    ListSelectionModel selmodel = list.getSelectionModel();
                    selmodel.setLeadSelectionIndex(index);
                }/*from  w  w  w .java 2 s  .  c  o m*/
            }
        }
    });
    leftPanel.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));

    leftPanel.add(new JScrollPane(list));

    JButton removeall = new JButton("Remove All");
    JButton add = new JButton("Add");
    JButton rename = new JButton("Rename");
    JButton delete = new JButton("Delete");

    add.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            String text = JOptionPane.showInputDialog("Add a new item");
            String item = null;

            if (text != null)
                item = text.trim();
            else
                return;

            if (!item.isEmpty())
                model.addElement(item);
        }
    });

    delete.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent event) {
            ListSelectionModel selmodel = list.getSelectionModel();
            int index = selmodel.getMinSelectionIndex();
            if (index >= 0)
                model.remove(index);
        }

    });

    rename.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            ListSelectionModel selmodel = list.getSelectionModel();
            int index = selmodel.getMinSelectionIndex();
            if (index == -1)
                return;
            Object item = model.getElementAt(index);
            String text = JOptionPane.showInputDialog("Rename item", item);
            String newitem = null;

            if (text != null) {
                newitem = text.trim();
            } else
                return;

            if (!newitem.isEmpty()) {
                model.remove(index);
                model.add(index, newitem);
            }
        }
    });

    removeall.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            model.clear();
        }
    });

    rightPanel.add(add);
    rightPanel.add(rename);
    rightPanel.add(delete);
    rightPanel.add(removeall);

    rightPanel.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 20));

    panel.add(leftPanel);
    panel.add(rightPanel);

    f.add(panel);

    f.setSize(350, 250);
    f.setLocationRelativeTo(null);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);

}

From source file:MainClass.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Modifying Model");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    final DefaultListModel model = new DefaultListModel();
    for (int i = 0, n = labels.length; i < n; i++) {
        model.addElement(labels[i]);//  w  w w  .  j  av  a  2 s .co  m
    }
    JList jlist = new JList(model);
    JScrollPane scrollPane1 = new JScrollPane(jlist);
    frame.add(scrollPane1, BorderLayout.WEST);

    ListDataListener listDataListener = new ListDataListener() {
        public void contentsChanged(ListDataEvent listDataEvent) {
            appendEvent(listDataEvent);
        }

        public void intervalAdded(ListDataEvent listDataEvent) {
            appendEvent(listDataEvent);
        }

        public void intervalRemoved(ListDataEvent listDataEvent) {
            appendEvent(listDataEvent);
        }

        private void appendEvent(ListDataEvent listDataEvent) {
            switch (listDataEvent.getType()) {
            case ListDataEvent.CONTENTS_CHANGED:
                System.out.println("Type: Contents Changed");
                break;
            case ListDataEvent.INTERVAL_ADDED:
                System.out.println("Type: Interval Added");
                break;
            case ListDataEvent.INTERVAL_REMOVED:
                System.out.println("Type: Interval Removed");
                break;
            }
            System.out.println(", Index0: " + listDataEvent.getIndex0());
            System.out.println(", Index1: " + listDataEvent.getIndex1());
            DefaultListModel theModel = (DefaultListModel) listDataEvent.getSource();
            System.out.println(theModel);
        }
    };

    model.addListDataListener(listDataListener);

    model.add(0, "First");
    model.addElement("Last");
    int size = model.getSize();
    model.insertElementAt("Middle", size / 2);
    size = model.getSize();
    if (size != 0)
        model.set(0, "New First");
    size = model.getSize();
    if (size != 0)
        model.setElementAt("New Last", size - 1);
    for (int i = 0, n = labels.length; i < n; i++) {
        model.addElement(labels[i]);
    }
    model.clear();
    size = model.getSize();
    if (size != 0)
        model.remove(0);

    model.removeAllElements();
    model.removeElement("Last");
    size = model.getSize();
    if (size != 0)
        model.removeElementAt(size / 2);
    size = model.getSize();
    if (size != 0)
        model.removeRange(0, size / 2);
    frame.setSize(640, 300);
    frame.setVisible(true);
}

From source file:Main.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Modifying Model");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    // Fill model
    final DefaultListModel model = new DefaultListModel();
    for (int i = 0, n = labels.length; i < n; i++) {
        model.addElement(labels[i]);//from  w  w w.j  av  a2 s .  c  o m
    }
    JList jlist = new JList(model);
    JScrollPane scrollPane1 = new JScrollPane(jlist);
    frame.add(scrollPane1, BorderLayout.CENTER);

    ListDataListener listDataListener = new ListDataListener() {
        public void contentsChanged(ListDataEvent listDataEvent) {
            appendEvent(listDataEvent);
        }

        public void intervalAdded(ListDataEvent listDataEvent) {
            appendEvent(listDataEvent);
        }

        public void intervalRemoved(ListDataEvent listDataEvent) {
            appendEvent(listDataEvent);
        }

        private void appendEvent(ListDataEvent listDataEvent) {
            switch (listDataEvent.getType()) {
            case ListDataEvent.CONTENTS_CHANGED:
                System.out.println("Type: Contents Changed");
                break;
            case ListDataEvent.INTERVAL_ADDED:
                System.out.println("Type: Interval Added");
                break;
            case ListDataEvent.INTERVAL_REMOVED:
                System.out.println("Type: Interval Removed");
                break;
            }
            System.out.println(", Index0: " + listDataEvent.getIndex0());
            System.out.println(", Index1: " + listDataEvent.getIndex1());
            DefaultListModel theModel = (DefaultListModel) listDataEvent.getSource();
            System.out.println(theModel);
        }
    };

    model.addListDataListener(listDataListener);

    JButton jb = new JButton("add F");

    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            model.add(0, "First");
        }
    });

    frame.add(jb, BorderLayout.SOUTH);

    frame.setSize(640, 300);
    frame.setVisible(true);
}

From source file:ModifyModelSample.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Modifying Model");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    // Fill model
    final DefaultListModel model = new DefaultListModel();
    for (int i = 0, n = labels.length; i < n; i++) {
        model.addElement(labels[i]);/*from   ww  w .  j a va 2s.  c  om*/
    }
    JList jlist = new JList(model);
    JScrollPane scrollPane1 = new JScrollPane(jlist);
    contentPane.add(scrollPane1, BorderLayout.WEST);

    final JTextArea textArea = new JTextArea();
    textArea.setEditable(false);
    JScrollPane scrollPane2 = new JScrollPane(textArea);
    contentPane.add(scrollPane2, BorderLayout.CENTER);

    ListDataListener listDataListener = new ListDataListener() {
        public void contentsChanged(ListDataEvent listDataEvent) {
            appendEvent(listDataEvent);
        }

        public void intervalAdded(ListDataEvent listDataEvent) {
            appendEvent(listDataEvent);
        }

        public void intervalRemoved(ListDataEvent listDataEvent) {
            appendEvent(listDataEvent);
        }

        private void appendEvent(ListDataEvent listDataEvent) {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            switch (listDataEvent.getType()) {
            case ListDataEvent.CONTENTS_CHANGED:
                pw.print("Type: Contents Changed");
                break;
            case ListDataEvent.INTERVAL_ADDED:
                pw.print("Type: Interval Added");
                break;
            case ListDataEvent.INTERVAL_REMOVED:
                pw.print("Type: Interval Removed");
                break;
            }
            pw.print(", Index0: " + listDataEvent.getIndex0());
            pw.print(", Index1: " + listDataEvent.getIndex1());
            DefaultListModel theModel = (DefaultListModel) listDataEvent.getSource();
            Enumeration elements = theModel.elements();
            pw.print(", Elements: ");
            while (elements.hasMoreElements()) {
                pw.print(elements.nextElement());
                pw.print(",");
            }
            pw.println();
            textArea.append(sw.toString());
        }
    };

    model.addListDataListener(listDataListener);

    // Setup buttons
    JPanel jp = new JPanel(new GridLayout(2, 1));
    JPanel jp1 = new JPanel(new FlowLayout(FlowLayout.CENTER, 1, 1));
    JPanel jp2 = new JPanel(new FlowLayout(FlowLayout.CENTER, 1, 1));
    jp.add(jp1);
    jp.add(jp2);
    JButton jb = new JButton("add F");
    jp1.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            model.add(0, "First");
        }
    });
    jb = new JButton("addElement L");
    jp1.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            model.addElement("Last");
        }
    });
    jb = new JButton("insertElementAt M");
    jp1.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            int size = model.getSize();
            model.insertElementAt("Middle", size / 2);
        }
    });
    jb = new JButton("set F");
    jp1.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            int size = model.getSize();
            if (size != 0)
                model.set(0, "New First");
        }
    });
    jb = new JButton("setElementAt L");
    jp1.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            int size = model.getSize();
            if (size != 0)
                model.setElementAt("New Last", size - 1);
        }
    });
    jb = new JButton("load 10");
    jp1.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            for (int i = 0, n = labels.length; i < n; i++) {
                model.addElement(labels[i]);
            }
        }
    });
    jb = new JButton("clear");
    jp2.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            model.clear();
        }
    });
    jb = new JButton("remove F");
    jp2.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            int size = model.getSize();
            if (size != 0)
                model.remove(0);
        }
    });
    jb = new JButton("removeAllElements");
    jp2.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            model.removeAllElements();
        }
    });
    jb = new JButton("removeElement 'Last'");
    jp2.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            model.removeElement("Last");
        }
    });
    jb = new JButton("removeElementAt M");
    jp2.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            int size = model.getSize();
            if (size != 0)
                model.removeElementAt(size / 2);
        }
    });
    jb = new JButton("removeRange FM");
    jp2.add(jb);
    jb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            int size = model.getSize();
            if (size != 0)
                model.removeRange(0, size / 2);
        }
    });
    contentPane.add(jp, BorderLayout.SOUTH);
    frame.setSize(640, 300);
    frame.setVisible(true);
}

From source file:Main.java

@Override
public boolean importData(TransferHandler.TransferSupport support) {
    if (!this.canImport(support)) {
        return false;
    }//from   ww w  .  j  a  v a  2s .com
    Transferable t = support.getTransferable();
    String data = null;
    try {
        data = (String) t.getTransferData(DataFlavor.stringFlavor);
        if (data == null) {
            return false;
        }
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }
    JList.DropLocation dropLocation = (JList.DropLocation) support.getDropLocation();
    int dropIndex = dropLocation.getIndex();
    JList<String> targetList = (JList<String>) support.getComponent();
    DefaultListModel<String> listModel = (DefaultListModel<String>) targetList.getModel();
    if (dropLocation.isInsert()) {
        listModel.add(dropIndex, data);
    } else {
        listModel.set(dropIndex, data);
    }
    return true;
}

From source file:ANNFileDetect.EditNet.java

public void populateList() {
    String[] nnames = new String[] { "" };
    nnames = sqlite.GetNetworkNames();//from www . j av  a 2s . co m
    DefaultListModel mdl = new DefaultListModel();
    for (int i = 0; i < nnames.length; i++) {
        mdl.add(i, nnames[i]);
    }
    NetList.setModel(mdl);
    NetList.addListSelectionListener(new ListSelectionListener() {

        public void valueChanged(ListSelectionEvent evt) {
            if (evt.getValueIsAdjusting()) {
                return;
            } else {
                String[] images = {};
                try {
                    images = sqlite.GetImagesForNetwork(NetList.getSelectedValue().toString());
                } catch (Exception e) {
                    System.out.println("exception: " + e.toString());
                }
                DefaultListModel mdl2 = new DefaultListModel();
                if (images.length > 0) {
                    for (int i = 0; i < images.length; i++) {
                        mdl2.add(i, images[i]);
                    }
                } else {
                    mdl2.clear();
                    thresholdList.setModel(mdl2);
                }
                fileList.setModel(mdl2);
            }
        }
    });
    fileList.addListSelectionListener(new ListSelectionListener() {

        public void valueChanged(ListSelectionEvent evt) {
            if (evt.getValueIsAdjusting()) {
                return;
            } else {
                String[] thresh = sqlite.GetThresholds(NetList.getSelectedValue().toString(),
                        fileList.getSelectedValue().toString());
                DefaultListModel mdl3 = new DefaultListModel();
                if (thresh.length > 0) {
                    for (int i = 0; i < thresh.length; i++) {
                        String[] vals = thresh[i].split(",");
                        mdl3.add(i, "Range: " + vals[0] + "-" + vals[1] + " Score: " + vals[3] + " Weight: "
                                + vals[2]);
                    }
                } else {
                    mdl3.clear();
                }
                thresholdList.setModel(mdl3);
            }

        }
    });

}

From source file:DragListDemo.java

public boolean importData(JComponent c, Transferable t) {
    JList target = null;/*from   ww w. j a va 2  s.co  m*/
    ArrayList alist = null;
    if (!canImport(c, t.getTransferDataFlavors())) {
        return false;
    }
    try {
        target = (JList) c;
        if (hasLocalArrayListFlavor(t.getTransferDataFlavors())) {
            alist = (ArrayList) t.getTransferData(localArrayListFlavor);
        } else if (hasSerialArrayListFlavor(t.getTransferDataFlavors())) {
            alist = (ArrayList) t.getTransferData(serialArrayListFlavor);
        } else {
            return false;
        }
    } catch (UnsupportedFlavorException ufe) {
        System.out.println("importData: unsupported data flavor");
        return false;
    } catch (IOException ioe) {
        System.out.println("importData: I/O exception");
        return false;
    }

    //At this point we use the same code to retrieve the data
    //locally or serially.

    //We'll drop at the current selected index.
    int index = target.getSelectedIndex();

    //Prevent the user from dropping data back on itself.
    //For example, if the user is moving items #4,#5,#6 and #7 and
    //attempts to insert the items after item #5, this would
    //be problematic when removing the original items.
    //This is interpreted as dropping the same data on itself
    //and has no effect.
    if (source.equals(target)) {
        if (indices != null && index >= indices[0] - 1 && index <= indices[indices.length - 1]) {
            indices = null;
            return true;
        }
    }

    DefaultListModel listModel = (DefaultListModel) target.getModel();
    int max = listModel.getSize();
    if (index < 0) {
        index = max;
    } else {
        index++;
        if (index > max) {
            index = max;
        }
    }
    addIndex = index;
    addCount = alist.size();
    for (int i = 0; i < alist.size(); i++) {
        listModel.add(index++, alist.get(i));
    }
    return true;
}

From source file:dnd.ListTransferHandler.java

public boolean importData(TransferHandler.TransferSupport info) {
    if (!info.isDrop()) {
        return false;
    }/*from ww  w .java 2 s  .  c  o  m*/

    JList list = (JList) info.getComponent();
    DefaultListModel listModel = (DefaultListModel) list.getModel();
    JList.DropLocation dl = (JList.DropLocation) info.getDropLocation();
    int index = dl.getIndex();
    boolean insert = dl.isInsert();

    // Get the string that is being dropped.
    Transferable t = info.getTransferable();
    String data;
    try {
        data = (String) t.getTransferData(DataFlavor.stringFlavor);
    } catch (Exception e) {
        return false;
    }

    // Perform the actual import.  
    if (insert) {
        listModel.add(index, data);
    } else {
        listModel.set(index, data);
    }
    return true;
}