Example usage for javax.swing JList setDropMode

List of usage examples for javax.swing JList setDropMode

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  6. setDropMode

Introduction

In this page you can find the example usage for javax.swing JList setDropMode.

Prototype

public final void setDropMode(DropMode dropMode)

Source Link

Document

Sets the drop mode for this component.

Usage

From source file:DnDDemo3.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);/*from w ww  . j  a  va2s  . 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);
            }
            Rectangle r = list.getCellBounds(index, index);
            list.scrollRectToVisible(r);
            return true;
        }
    });
    JScrollPane center = new JScrollPane();
    center.setViewportView(list);

    list.setDropMode(DropMode.USE_SELECTION);
    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:DropModeON.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);/* w  w w  .j  a v  a2 s  . c o m*/
    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.ON);
    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:DropModeON_OR_INSERT.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);//  w  ww .jav a2s . c o  m
    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.ON_OR_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: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);/*from   w  w w . jav  a 2  s  . c  o  m*/
    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:ListDrop.java

public ListDrop() {
    JFrame f = new JFrame();
    JList list = new JList(model);
    list.setDropMode(DropMode.INSERT);
    list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    list.setTransferHandler(new ListHandler());

    field.setDragEnabled(true);/*from  www .j a  va 2  s .c  om*/
    f.setLayout(new FlowLayout());
    f.add(new JScrollPane(list));
    f.add(field);
    f.pack();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
}

From source file:dnd.ChooseDropActionDemo.java

public ChooseDropActionDemo() {
    super("ChooseDropActionDemo");

    for (int i = 15; i >= 0; i--) {
        from.add(0, "Source item " + i);
    }/*from  w  ww .ja  va  2 s . c o  m*/

    for (int i = 2; i >= 0; i--) {
        copy.add(0, "Target item " + i);
        move.add(0, "Target item " + i);
    }

    JPanel p = new JPanel();
    p.setLayout(new BoxLayout(p, BoxLayout.Y_AXIS));
    dragFrom = new JList(from);
    dragFrom.setTransferHandler(new FromTransferHandler());
    dragFrom.setPrototypeCellValue("List Item WWWWWW");
    dragFrom.setDragEnabled(true);
    dragFrom.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    JLabel label = new JLabel("Drag from here:");
    label.setAlignmentX(0f);
    p.add(label);
    JScrollPane sp = new JScrollPane(dragFrom);
    sp.setAlignmentX(0f);
    p.add(sp);
    add(p, BorderLayout.WEST);

    JList moveTo = new JList(move);
    moveTo.setTransferHandler(new ToTransferHandler(TransferHandler.COPY));
    moveTo.setDropMode(DropMode.INSERT);
    JList copyTo = new JList(copy);
    copyTo.setTransferHandler(new ToTransferHandler(TransferHandler.MOVE));
    copyTo.setDropMode(DropMode.INSERT);

    p = new JPanel();
    p.setLayout(new BoxLayout(p, BoxLayout.Y_AXIS));
    label = new JLabel("Drop to COPY to here:");
    label.setAlignmentX(0f);
    p.add(label);
    sp = new JScrollPane(moveTo);
    sp.setAlignmentX(0f);
    p.add(sp);
    label = new JLabel("Drop to MOVE to here:");
    label.setAlignmentX(0f);
    p.add(label);
    sp = new JScrollPane(copyTo);
    sp.setAlignmentX(0f);
    p.add(sp);
    p.setBorder(BorderFactory.createEmptyBorder(0, 2, 0, 0));
    add(p, BorderLayout.CENTER);

    ((JPanel) getContentPane()).setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));

    getContentPane().setPreferredSize(new Dimension(320, 315));
}

From source file:ChooseDropActionDemo.java

public ChooseDropActionDemo() {
    super("ChooseDropActionDemo");

    for (int i = 15; i >= 0; i--) {
        from.add(0, "Source item " + i);
    }//from w  ww.  ja va  2 s.c o m

    for (int i = 2; i >= 0; i--) {
        copy.add(0, "Target item " + i);
        move.add(0, "Target item " + i);
    }

    JPanel p = new JPanel();
    p.setLayout(new BoxLayout(p, BoxLayout.Y_AXIS));
    dragFrom = new JList(from);
    dragFrom.setTransferHandler(new FromTransferHandler());
    dragFrom.setPrototypeCellValue("List Item WWWWWW");
    dragFrom.setDragEnabled(true);
    dragFrom.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    JLabel label = new JLabel("Drag from here:");
    label.setAlignmentX(0f);
    p.add(label);
    JScrollPane sp = new JScrollPane(dragFrom);
    sp.setAlignmentX(0f);
    p.add(sp);
    add(p, BorderLayout.WEST);

    JList moveTo = new JList(move);
    moveTo.setTransferHandler(new ToTransferHandler(TransferHandler.COPY));
    moveTo.setDropMode(DropMode.INSERT);
    JList copyTo = new JList(copy);
    copyTo.setTransferHandler(new ToTransferHandler(TransferHandler.MOVE));
    copyTo.setDropMode(DropMode.INSERT);

    p = new JPanel();
    p.setLayout(new BoxLayout(p, BoxLayout.Y_AXIS));
    label = new JLabel("Drop to COPY to here:");
    ;
    label.setAlignmentX(0f);
    p.add(label);
    sp = new JScrollPane(moveTo);
    sp.setAlignmentX(0f);
    p.add(sp);
    label = new JLabel("Drop to MOVE to here:");
    label.setAlignmentX(0f);
    p.add(label);
    sp = new JScrollPane(copyTo);
    sp.setAlignmentX(0f);
    p.add(sp);
    p.setBorder(BorderFactory.createEmptyBorder(0, 2, 0, 0));
    add(p, BorderLayout.CENTER);

    ((JPanel) getContentPane()).setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));

    getContentPane().setPreferredSize(new Dimension(320, 315));
}

From source file:ListCutPaste.java

public ListCutPaste() {
    super(new BorderLayout());
    lh = new ListTransferHandler();

    JPanel panel = new JPanel(new GridLayout(1, 3));
    DefaultListModel list1Model = new DefaultListModel();
    list1Model.addElement("alpha");
    list1Model.addElement("beta");
    list1Model.addElement("gamma");
    list1Model.addElement("delta");
    list1Model.addElement("epsilon");
    list1Model.addElement("zeta");
    JList list1 = new JList(list1Model);
    list1.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    JScrollPane sp1 = new JScrollPane(list1);
    sp1.setPreferredSize(new Dimension(400, 100));
    list1.setDragEnabled(true);/*from w  ww  .  ja v  a 2 s. c om*/
    list1.setTransferHandler(lh);
    list1.setDropMode(DropMode.ON_OR_INSERT);
    setMappings(list1);
    JPanel pan1 = new JPanel(new BorderLayout());
    pan1.add(sp1, BorderLayout.CENTER);
    pan1.setBorder(BorderFactory.createTitledBorder("Greek Alphabet"));
    panel.add(pan1);

    DefaultListModel list2Model = new DefaultListModel();
    list2Model.addElement("uma");
    list2Model.addElement("dois");
    list2Model.addElement("tres");
    list2Model.addElement("quatro");
    list2Model.addElement("cinco");
    list2Model.addElement("seis");
    JList list2 = new JList(list2Model);
    list2.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    list2.setDragEnabled(true);
    JScrollPane sp2 = new JScrollPane(list2);
    sp2.setPreferredSize(new Dimension(400, 100));
    list2.setTransferHandler(lh);
    list2.setDropMode(DropMode.INSERT);
    setMappings(list2);
    JPanel pan2 = new JPanel(new BorderLayout());
    pan2.add(sp2, BorderLayout.CENTER);
    pan2.setBorder(BorderFactory.createTitledBorder("Portuguese Numbers"));
    panel.add(pan2);

    DefaultListModel list3Model = new DefaultListModel();
    list3Model.addElement("adeen");
    list3Model.addElement("dva");
    list3Model.addElement("tri");
    list3Model.addElement("chyetirye");
    list3Model.addElement("pyat");
    list3Model.addElement("shest");
    JList list3 = new JList(list3Model);
    list3.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    list3.setDragEnabled(true);
    JScrollPane sp3 = new JScrollPane(list3);
    sp3.setPreferredSize(new Dimension(400, 100));
    list3.setTransferHandler(lh);
    list3.setDropMode(DropMode.ON);
    setMappings(list3);
    JPanel pan3 = new JPanel(new BorderLayout());
    pan3.add(sp3, BorderLayout.CENTER);
    pan3.setBorder(BorderFactory.createTitledBorder("Russian Numbers"));
    panel.add(pan3);

    setPreferredSize(new Dimension(500, 200));
    add(panel, BorderLayout.CENTER);
}

From source file:dnd.BasicDnD.java

public BasicDnD() {
    super(new BorderLayout());
    JPanel leftPanel = createVerticalBoxPanel();
    JPanel rightPanel = createVerticalBoxPanel();

    //Create a table model.
    DefaultTableModel tm = new DefaultTableModel();
    tm.addColumn("Column 0");
    tm.addColumn("Column 1");
    tm.addColumn("Column 2");
    tm.addColumn("Column 3");
    tm.addRow(new String[] { "Table 00", "Table 01", "Table 02", "Table 03" });
    tm.addRow(new String[] { "Table 10", "Table 11", "Table 12", "Table 13" });
    tm.addRow(new String[] { "Table 20", "Table 21", "Table 22", "Table 23" });
    tm.addRow(new String[] { "Table 30", "Table 31", "Table 32", "Table 33" });

    //LEFT COLUMN
    //Use the table model to create a table.
    table = new JTable(tm);
    leftPanel.add(createPanelForComponent(table, "JTable"));

    //Create a color chooser.
    colorChooser = new JColorChooser();
    leftPanel.add(createPanelForComponent(colorChooser, "JColorChooser"));

    //RIGHT COLUMN
    //Create a textfield.
    textField = new JTextField(30);
    textField.setText("Favorite foods:\nPizza, Moussaka, Pot roast");
    rightPanel.add(createPanelForComponent(textField, "JTextField"));

    //Create a scrolled text area.
    textArea = new JTextArea(5, 30);
    textArea.setText("Favorite shows:\nBuffy, Alias, Angel");
    JScrollPane scrollPane = new JScrollPane(textArea);
    rightPanel.add(createPanelForComponent(scrollPane, "JTextArea"));

    //Create a list model and a list.
    DefaultListModel listModel = new DefaultListModel();
    listModel.addElement("Martha Washington");
    listModel.addElement("Abigail Adams");
    listModel.addElement("Martha Randolph");
    listModel.addElement("Dolley Madison");
    listModel.addElement("Elizabeth Monroe");
    listModel.addElement("Louisa Adams");
    listModel.addElement("Emily Donelson");
    list = new JList(listModel);
    list.setVisibleRowCount(-1);//from w  w w.  j a  v  a 2 s. c o m
    list.getSelectionModel().setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);

    list.setTransferHandler(new TransferHandler() {

        public boolean canImport(TransferHandler.TransferSupport info) {
            // we only import Strings
            if (!info.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                return false;
            }

            JList.DropLocation dl = (JList.DropLocation) info.getDropLocation();
            if (dl.getIndex() == -1) {
                return false;
            }
            return true;
        }

        public boolean importData(TransferHandler.TransferSupport info) {
            if (!info.isDrop()) {
                return false;
            }

            // Check for String flavor
            if (!info.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                displayDropLocation("List doesn't accept a drop of this type.");
                return false;
            }

            JList.DropLocation dl = (JList.DropLocation) info.getDropLocation();
            DefaultListModel listModel = (DefaultListModel) list.getModel();
            int index = dl.getIndex();
            boolean insert = dl.isInsert();
            // Get the current string under the drop.
            String value = (String) listModel.getElementAt(index);

            // 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;
            }

            // Display a dialog with the drop information.
            String dropValue = "\"" + data + "\" dropped ";
            if (dl.isInsert()) {
                if (dl.getIndex() == 0) {
                    displayDropLocation(dropValue + "at beginning of list");
                } else if (dl.getIndex() >= list.getModel().getSize()) {
                    displayDropLocation(dropValue + "at end of list");
                } else {
                    String value1 = (String) list.getModel().getElementAt(dl.getIndex() - 1);
                    String value2 = (String) list.getModel().getElementAt(dl.getIndex());
                    displayDropLocation(dropValue + "between \"" + value1 + "\" and \"" + value2 + "\"");
                }
            } else {
                displayDropLocation(dropValue + "on top of " + "\"" + value + "\"");
            }

            /**  This is commented out for the basicdemo.html tutorial page.
                       **  If you add this code snippet back and delete the
                       **  "return false;" line, the list will accept drops
                       **  of type string.
                      // Perform the actual import.  
                      if (insert) {
            listModel.add(index, data);
                      } else {
            listModel.set(index, data);
                      }
                      return true;
            */
            return false;
        }

        public int getSourceActions(JComponent c) {
            return COPY;
        }

        protected Transferable createTransferable(JComponent c) {
            JList list = (JList) c;
            Object[] values = list.getSelectedValues();

            StringBuffer buff = new StringBuffer();

            for (int i = 0; i < values.length; i++) {
                Object val = values[i];
                buff.append(val == null ? "" : val.toString());
                if (i != values.length - 1) {
                    buff.append("\n");
                }
            }
            return new StringSelection(buff.toString());
        }
    });
    list.setDropMode(DropMode.ON_OR_INSERT);

    JScrollPane listView = new JScrollPane(list);
    listView.setPreferredSize(new Dimension(300, 100));
    rightPanel.add(createPanelForComponent(listView, "JList"));

    //Create a tree.
    DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode("Mia Familia");
    DefaultMutableTreeNode sharon = new DefaultMutableTreeNode("Sharon");
    rootNode.add(sharon);
    DefaultMutableTreeNode maya = new DefaultMutableTreeNode("Maya");
    sharon.add(maya);
    DefaultMutableTreeNode anya = new DefaultMutableTreeNode("Anya");
    sharon.add(anya);
    sharon.add(new DefaultMutableTreeNode("Bongo"));
    maya.add(new DefaultMutableTreeNode("Muffin"));
    anya.add(new DefaultMutableTreeNode("Winky"));
    DefaultTreeModel model = new DefaultTreeModel(rootNode);
    tree = new JTree(model);
    tree.getSelectionModel().setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);
    JScrollPane treeView = new JScrollPane(tree);
    treeView.setPreferredSize(new Dimension(300, 100));
    rightPanel.add(createPanelForComponent(treeView, "JTree"));

    //Create the toggle button.
    toggleDnD = new JCheckBox("Turn on Drag and Drop");
    toggleDnD.setActionCommand("toggleDnD");
    toggleDnD.addActionListener(this);

    JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftPanel, rightPanel);
    splitPane.setOneTouchExpandable(true);

    add(splitPane, BorderLayout.CENTER);
    add(toggleDnD, BorderLayout.PAGE_END);
    setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
}

From source file:BasicDnD.java

public BasicDnD() {
    super(new BorderLayout());
    JPanel leftPanel = createVerticalBoxPanel();
    JPanel rightPanel = createVerticalBoxPanel();

    // Create a table model.
    DefaultTableModel tm = new DefaultTableModel();
    tm.addColumn("Column 0");
    tm.addColumn("Column 1");
    tm.addColumn("Column 2");
    tm.addColumn("Column 3");
    tm.addRow(new String[] { "Table 00", "Table 01", "Table 02", "Table 03" });
    tm.addRow(new String[] { "Table 10", "Table 11", "Table 12", "Table 13" });
    tm.addRow(new String[] { "Table 20", "Table 21", "Table 22", "Table 23" });
    tm.addRow(new String[] { "Table 30", "Table 31", "Table 32", "Table 33" });

    // LEFT COLUMN
    // Use the table model to create a table.
    table = new JTable(tm);
    leftPanel.add(createPanelForComponent(table, "JTable"));

    // Create a color chooser.
    colorChooser = new JColorChooser();
    leftPanel.add(createPanelForComponent(colorChooser, "JColorChooser"));

    // RIGHT COLUMN
    // Create a textfield.
    textField = new JTextField(30);
    textField.setText("Favorite foods:\nPizza, Moussaka, Pot roast");
    rightPanel.add(createPanelForComponent(textField, "JTextField"));

    // Create a scrolled text area.
    textArea = new JTextArea(5, 30);
    textArea.setText("Favorite shows:\nBuffy, Alias, Angel");
    JScrollPane scrollPane = new JScrollPane(textArea);
    rightPanel.add(createPanelForComponent(scrollPane, "JTextArea"));

    // Create a list model and a list.
    DefaultListModel listModel = new DefaultListModel();
    listModel.addElement("Martha Washington");
    listModel.addElement("Abigail Adams");
    listModel.addElement("Martha Randolph");
    listModel.addElement("Dolley Madison");
    listModel.addElement("Elizabeth Monroe");
    listModel.addElement("Louisa Adams");
    listModel.addElement("Emily Donelson");
    list = new JList(listModel);
    list.setVisibleRowCount(-1);/*from w ww.ja v  a2  s  .  co m*/
    list.getSelectionModel().setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);

    list.setTransferHandler(new TransferHandler() {

        public boolean canImport(TransferHandler.TransferSupport info) {
            // we only import Strings
            if (!info.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                return false;
            }

            JList.DropLocation dl = (JList.DropLocation) info.getDropLocation();
            if (dl.getIndex() == -1) {
                return false;
            }
            return true;
        }

        public boolean importData(TransferHandler.TransferSupport info) {
            if (!info.isDrop()) {
                return false;
            }

            // Check for String flavor
            if (!info.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                displayDropLocation("List doesn't accept a drop of this type.");
                return false;
            }

            JList.DropLocation dl = (JList.DropLocation) info.getDropLocation();
            DefaultListModel listModel = (DefaultListModel) list.getModel();
            int index = dl.getIndex();
            boolean insert = dl.isInsert();
            // Get the current string under the drop.
            String value = (String) listModel.getElementAt(index);

            // 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;
            }

            // Display a dialog with the drop information.
            String dropValue = "\"" + data + "\" dropped ";
            if (dl.isInsert()) {
                if (dl.getIndex() == 0) {
                    displayDropLocation(dropValue + "at beginning of list");
                } else if (dl.getIndex() >= list.getModel().getSize()) {
                    displayDropLocation(dropValue + "at end of list");
                } else {
                    String value1 = (String) list.getModel().getElementAt(dl.getIndex() - 1);
                    String value2 = (String) list.getModel().getElementAt(dl.getIndex());
                    displayDropLocation(dropValue + "between \"" + value1 + "\" and \"" + value2 + "\"");
                }
            } else {
                displayDropLocation(dropValue + "on top of " + "\"" + value + "\"");
            }

            /**
             * This is commented out for the basicdemo.html tutorial page. * If you
             * add this code snippet back and delete the * "return false;" line, the
             * list will accept drops * of type string. // Perform the actual
             * import. if (insert) { listModel.add(index, data); } else {
             * listModel.set(index, data); } return true;
             */
            return false;
        }

        public int getSourceActions(JComponent c) {
            return COPY;
        }

        protected Transferable createTransferable(JComponent c) {
            JList list = (JList) c;
            Object[] values = list.getSelectedValues();

            StringBuffer buff = new StringBuffer();

            for (int i = 0; i < values.length; i++) {
                Object val = values[i];
                buff.append(val == null ? "" : val.toString());
                if (i != values.length - 1) {
                    buff.append("\n");
                }
            }
            return new StringSelection(buff.toString());
        }
    });
    list.setDropMode(DropMode.ON_OR_INSERT);

    JScrollPane listView = new JScrollPane(list);
    listView.setPreferredSize(new Dimension(300, 100));
    rightPanel.add(createPanelForComponent(listView, "JList"));

    // Create a tree.
    DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode("Mia Familia");
    DefaultMutableTreeNode sharon = new DefaultMutableTreeNode("Sharon");
    rootNode.add(sharon);
    DefaultMutableTreeNode maya = new DefaultMutableTreeNode("Maya");
    sharon.add(maya);
    DefaultMutableTreeNode anya = new DefaultMutableTreeNode("Anya");
    sharon.add(anya);
    sharon.add(new DefaultMutableTreeNode("Bongo"));
    maya.add(new DefaultMutableTreeNode("Muffin"));
    anya.add(new DefaultMutableTreeNode("Winky"));
    DefaultTreeModel model = new DefaultTreeModel(rootNode);
    tree = new JTree(model);
    tree.getSelectionModel().setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);
    JScrollPane treeView = new JScrollPane(tree);
    treeView.setPreferredSize(new Dimension(300, 100));
    rightPanel.add(createPanelForComponent(treeView, "JTree"));

    // Create the toggle button.
    toggleDnD = new JCheckBox("Turn on Drag and Drop");
    toggleDnD.setActionCommand("toggleDnD");
    toggleDnD.addActionListener(this);

    JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftPanel, rightPanel);
    splitPane.setOneTouchExpandable(true);

    add(splitPane, BorderLayout.CENTER);
    add(toggleDnD, BorderLayout.PAGE_END);
    setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
}