Example usage for javax.swing JList setTransferHandler

Introduction

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

Prototype

@BeanProperty(hidden = true, description = "Mechanism for transfer of data to and from the component")
public void setTransferHandler(TransferHandler newHandler) 

Source Link

Document

Sets the TransferHandler , which provides support for transfer of data into and out of this component via cut/copy/paste and drag and drop.

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  w w .ja v  a 2  s. co  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);
            }
            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);// ww  w  .j  a  v  a 2s  .co 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 w w.  j a  v  a  2s . co  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  . j a v  a  2  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: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  v a2 s. com*/
    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. j  av a2  s.  com*/

    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);
    }// w ww  .  j ava  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:ExtendedDnDDemo.java

private JPanel createList() {
    DefaultListModel listModel = new DefaultListModel();
    listModel.addElement("List 0");
    listModel.addElement("List 1");
    listModel.addElement("List 2");
    listModel.addElement("List 3");
    listModel.addElement("List 4");
    listModel.addElement("List 5");
    listModel.addElement("List 6");
    listModel.addElement("List 7");
    listModel.addElement("List 8");

    JList list = new JList(listModel);
    list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
    JScrollPane scrollPane = new JScrollPane(list);
    scrollPane.setPreferredSize(new Dimension(400, 100));

    list.setDragEnabled(true);//w ww .j  a  v  a  2s  .  c  o m
    list.setTransferHandler(new ListTransferHandler());

    JPanel panel = new JPanel(new BorderLayout());
    panel.add(scrollPane, BorderLayout.CENTER);
    panel.setBorder(BorderFactory.createTitledBorder("List"));
    return panel;
}

---

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 w w .jav a 2s .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:DragListDemo.java

public DragListDemo() {
    arrayListHandler = new ArrayListTransferHandler();
    JList list1, list2;

    DefaultListModel list1Model = new DefaultListModel();
    list1Model.addElement("0 (list 1)");
    list1Model.addElement("1 (list 1)");
    list1Model.addElement("2 (list 1)");
    list1Model.addElement("3 (list 1)");
    list1Model.addElement("4 (list 1)");
    list1Model.addElement("5 (list 1)");
    list1Model.addElement("6 (list 1)");
    list1 = new JList(list1Model);
    list1.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
    list1.setTransferHandler(arrayListHandler);
    list1.setDragEnabled(true);/*from  w w w. j av a  2s.  c  om*/
    JScrollPane list1View = new JScrollPane(list1);
    list1View.setPreferredSize(new Dimension(200, 100));
    JPanel panel1 = new JPanel();
    panel1.setLayout(new BorderLayout());
    panel1.add(list1View, BorderLayout.CENTER);
    panel1.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));

    DefaultListModel list2Model = new DefaultListModel();
    list2Model.addElement("0 (list 2)");
    list2Model.addElement("1 (list 2)");
    list2Model.addElement("2 (list 2)");
    list2Model.addElement("3 (list 2)");
    list2Model.addElement("4 (list 2)");
    list2Model.addElement("5 (list 2)");
    list2Model.addElement("6 (list 2)");
    list2 = new JList(list2Model);
    list2.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
    list2.setTransferHandler(arrayListHandler);
    list2.setDragEnabled(true);
    JScrollPane list2View = new JScrollPane(list2);
    list2View.setPreferredSize(new Dimension(200, 100));
    JPanel panel2 = new JPanel();
    panel2.setLayout(new BorderLayout());
    panel2.add(list2View, BorderLayout.CENTER);
    panel2.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));

    setLayout(new BorderLayout());
    add(panel1, BorderLayout.LINE_START);
    add(panel2, BorderLayout.LINE_END);
    setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
}

---

• «
• 1
• 2
• »