/* * 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;import javax.swing.*;import javax.swing.event.*;import java.awt.*;import java.awt.event.*;import java.io.*;import java.net.*;import java.awt.datatransfer.*;import java.awt.dnd.*;import java.util.*;/** * Demonstration of the top-level {@code TransferHandler} * support on {@code JFrame}. * * @author Shannon Hickey */public class TopLevelTransferHandlerDemo extends JFrame {        private static boolean DEMO = false;    private JDesktopPane dp = new JDesktopPane();    private DefaultListModel listModel = new DefaultListModel();    private JList list = new JList(listModel);    private static int left;    private static int top;    private JCheckBoxMenuItem copyItem;    private JCheckBoxMenuItem nullItem;    private JCheckBoxMenuItem thItem;    private class Doc extends InternalFrameAdapter implements ActionListener {        String name;        JInternalFrame frame;        TransferHandler th;        JTextArea area;        public Doc(File file) {            this.name = file.getName();            try {                init(file.toURI().toURL());            } catch (MalformedURLException e) {                e.printStackTrace();            }        }                public Doc(String name) {            this.name = name;            init(getClass().getResource(name));        }                private void init(URL url) {            frame = new JInternalFrame(name);            frame.addInternalFrameListener(this);            listModel.add(listModel.size(), this);            area = new JTextArea();            area.setMargin(new Insets(5, 5, 5, 5));            try {                BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));                String in;                while ((in = reader.readLine()) != null) {                    area.append(in);                    area.append("\n");                }                reader.close();            } catch (Exception e) {                e.printStackTrace();                return;            }            th = area.getTransferHandler();            area.setFont(new Font("monospaced", Font.PLAIN, 12));            area.setCaretPosition(0);            area.setDragEnabled(true);            area.setDropMode(DropMode.INSERT);            frame.getContentPane().add(new JScrollPane(area));            dp.add(frame);            frame.show();            if (DEMO) {                frame.setSize(300, 200);            } else {                frame.setSize(400, 300);            }            frame.setResizable(true);            frame.setClosable(true);            frame.setIconifiable(true);            frame.setMaximizable(true);            frame.setLocation(left, top);            incr();            SwingUtilities.invokeLater(new Runnable() {                public void run() {                    select();                }            });            nullItem.addActionListener(this);            setNullTH();        }        public void internalFrameClosing(InternalFrameEvent event) {            listModel.removeElement(this);            nullItem.removeActionListener(this);        }        public void internalFrameOpened(InternalFrameEvent event) {            int index = listModel.indexOf(this);            list.getSelectionModel().setSelectionInterval(index, index);        }        public void internalFrameActivated(InternalFrameEvent event) {            int index = listModel.indexOf(this);            list.getSelectionModel().setSelectionInterval(index, index);        }        public String toString() {            return name;        }                public void select() {            try {                frame.toFront();                frame.setSelected(true);            } catch (java.beans.PropertyVetoException e) {}        }                public void actionPerformed(ActionEvent ae) {            setNullTH();        }                public void setNullTH() {            if (nullItem.isSelected()) {                area.setTransferHandler(null);            } else {                area.setTransferHandler(th);            }        }    }    private TransferHandler handler = new TransferHandler() {        public boolean canImport(TransferHandler.TransferSupport support) {            if (!support.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {                return false;            }            if (copyItem.isSelected()) {                boolean copySupported = (COPY & support.getSourceDropActions()) == COPY;                if (!copySupported) {                    return false;                }                support.setDropAction(COPY);            }            return true;        }        public boolean importData(TransferHandler.TransferSupport support) {            if (!canImport(support)) {                return false;            }                        Transferable t = support.getTransferable();            try {                java.util.List<File> l =                    (java.util.List<File>)t.getTransferData(DataFlavor.javaFileListFlavor);                for (File f : l) {                    new Doc(f);                }            } catch (UnsupportedFlavorException e) {                return false;            } catch (IOException e) {                return false;            }            return true;        }    };    private static void incr() {        left += 30;        top += 30;        if (top == 150) {            top = 0;        }    }    public TopLevelTransferHandlerDemo() {        super("TopLevelTransferHandlerDemo");        setJMenuBar(createDummyMenuBar());        getContentPane().add(createDummyToolBar(), BorderLayout.NORTH);        JSplitPane sp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, list, dp);        sp.setDividerLocation(120);        getContentPane().add(sp);        //new Doc("sample.txt");        //new Doc("sample.txt");        //new Doc("sample.txt");        list.getSelectionModel().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);        list.addListSelectionListener(new ListSelectionListener() {            public void valueChanged(ListSelectionEvent e) {                if (e.getValueIsAdjusting()) {                    return;                }                                Doc val = (Doc)list.getSelectedValue();                if (val != null) {                    val.select();                }             }        });                final TransferHandler th = list.getTransferHandler();        nullItem.addActionListener(new ActionListener() {            public void actionPerformed(ActionEvent ae) {                if (nullItem.isSelected()) {                    list.setTransferHandler(null);                } else {                    list.setTransferHandler(th);                }            }        });        thItem.addActionListener(new ActionListener() {            public void actionPerformed(ActionEvent ae) {                if (thItem.isSelected()) {                    setTransferHandler(handler);                } else {                    setTransferHandler(null);                }            }        });        dp.setTransferHandler(handler);    }    private static void createAndShowGUI(String[] args) {        try {            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());        } catch (Exception e) {        }        TopLevelTransferHandlerDemo test = new TopLevelTransferHandlerDemo();        test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        if (DEMO) {            test.setSize(493, 307);        } else {            test.setSize(800, 600);        }        test.setLocationRelativeTo(null);        test.setVisible(true);        test.list.requestFocus();    }        public static void main(final String[] args) {        SwingUtilities.invokeLater(new Runnable() {            public void run() {                //Turn off metal's use of bold fonts	        UIManager.put("swing.boldMetal", Boolean.FALSE);                createAndShowGUI(args);            }        });    }        private JToolBar createDummyToolBar() {        JToolBar tb = new JToolBar();        JButton b;        b = new JButton("New");        b.setRequestFocusEnabled(false);        tb.add(b);        b = new JButton("Open");        b.setRequestFocusEnabled(false);        tb.add(b);        b = new JButton("Save");        b.setRequestFocusEnabled(false);        tb.add(b);        b = new JButton("Print");        b.setRequestFocusEnabled(false);        tb.add(b);        b = new JButton("Preview");        b.setRequestFocusEnabled(false);        tb.add(b);        tb.setFloatable(false);        return tb;    }        private JMenuBar createDummyMenuBar() {        JMenuBar mb = new JMenuBar();        mb.add(createDummyMenu("File"));        mb.add(createDummyMenu("Edit"));        mb.add(createDummyMenu("Search"));        mb.add(createDummyMenu("View"));        mb.add(createDummyMenu("Tools"));        mb.add(createDummyMenu("Help"));                JMenu demo = new JMenu("Demo");        demo.setMnemonic(KeyEvent.VK_D);        mb.add(demo);        thItem = new JCheckBoxMenuItem("Use Top-Level TransferHandler");        thItem.setMnemonic(KeyEvent.VK_T);        demo.add(thItem);        nullItem = new JCheckBoxMenuItem("Remove TransferHandler from List and Text");        nullItem.setMnemonic(KeyEvent.VK_R);        demo.add(nullItem);        copyItem = new JCheckBoxMenuItem("Use COPY Action");        copyItem.setMnemonic(KeyEvent.VK_C);        demo.add(copyItem);        return mb;    }        private JMenu createDummyMenu(String str) {        JMenu menu = new JMenu(str);        JMenuItem item = new JMenuItem("[Empty]");        item.setEnabled(false);        menu.add(item);        return menu;    }}