/* * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * *   - Redistributions of source code must retain the above copyright *     notice, this list of conditions and the following disclaimer. * *   - Redistributions in binary form must reproduce the above copyright *     notice, this list of conditions and the following disclaimer in the *     documentation and/or other materials provided with the distribution. * *   - Neither the name of Sun Microsystems nor the names of its *     contributors may be used to endorse or promote products derived *     from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package dnd;/* * DropDemo.java requires the following file: *     ListTransferHandler.java */import javax.swing.*;import java.awt.*;import java.awt.datatransfer.*;import java.awt.event.*;public class DropDemo extends JPanel implements ActionListener {    private JComboBox dropCombo;    private JList list;        public DropDemo() {        super(new GridLayout(2,1));        add(createArea());        add(createList());    }        private JPanel createList() {        DefaultListModel listModel = new DefaultListModel();                    for (int i = 0; i < 10; i++) {            listModel.addElement("List Item " + i);        }                list = new JList(listModel);        list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);        JScrollPane scrollPane = new JScrollPane(list);        scrollPane.setPreferredSize(new Dimension(400,100));                list.setDragEnabled(true);        list.setTransferHandler(new ListTransferHandler());                dropCombo = new JComboBox(new String[] {"USE_SELECTION", "ON", "INSERT", "ON_OR_INSERT"});        dropCombo.addActionListener(this);        JPanel dropPanel = new JPanel();        dropPanel.add(new JLabel("List Drop Mode:"));        dropPanel.add(dropCombo);                JPanel panel = new JPanel(new BorderLayout());        panel.add(scrollPane, BorderLayout.CENTER);        panel.add(dropPanel, BorderLayout.SOUTH);        panel.setBorder(BorderFactory.createTitledBorder("List"));        return panel;    }        private JPanel createArea() {        String text = "Drag from or drop into this area.\nThe default action is MOVE;\nhold the Control key to COPY.";                JTextArea area = new JTextArea();        area.setText(text);        area.setDragEnabled(true);        JScrollPane scrollPane = new JScrollPane(area);        scrollPane.setPreferredSize(new Dimension(400,100));        JPanel panel = new JPanel(new BorderLayout());        panel.add(scrollPane, BorderLayout.CENTER);        panel.setBorder(BorderFactory.createTitledBorder("Text Area"));        return panel;    }    public void actionPerformed(ActionEvent ae) {        Object val = dropCombo.getSelectedItem();        if (val == "USE_SELECTION") {            list.setDropMode(DropMode.USE_SELECTION);        } else if (val == "ON") {            list.setDropMode(DropMode.ON);        } else if (val == "INSERT") {            list.setDropMode(DropMode.INSERT);        } else if (val == "ON_OR_INSERT") {            list.setDropMode(DropMode.ON_OR_INSERT);        }    }    /**     * Create the GUI and show it.  For thread safety,     * this method should be invoked from the     * event-dispatching thread.     */    private static void createAndShowGUI() {        //Create and set up the window.        JFrame frame = new JFrame("DropDemo");        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        //Create and set up the content pane.        JComponent newContentPane = new DropDemo();        newContentPane.setOpaque(true); //content panes must be opaque        frame.setContentPane(newContentPane);        //Display the window.        frame.pack();        frame.setVisible(true);    }    public static void main(String[] args) {        //Schedule a job for the event-dispatching thread:        //creating and showing this application's GUI.        javax.swing.SwingUtilities.invokeLater(new Runnable() {            public void run() {                //Turn off metal's use of bold fonts	        UIManager.put("swing.boldMetal", Boolean.FALSE);                createAndShowGUI();            }        });    }}