Java tutorial
/* From http://java.sun.com/docs/books/tutorial/index.html */ /* * Copyright (c) 2006 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: * * -Redistribution of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * -Redistribution 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, Inc. or the names of contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that this software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of any * nuclear facility. */ /* * BasicDnD.java is a 1.4 example that requires no other files. */ import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.BorderFactory; import javax.swing.BoxLayout; import javax.swing.DefaultListModel; import javax.swing.JCheckBox; import javax.swing.JColorChooser; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JList; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JSplitPane; import javax.swing.JTable; import javax.swing.JTextArea; import javax.swing.JTextField; import javax.swing.JTree; import javax.swing.ListSelectionModel; import javax.swing.table.DefaultTableModel; import javax.swing.tree.DefaultMutableTreeNode; import javax.swing.tree.DefaultTreeModel; import javax.swing.tree.TreeSelectionModel; public class BasicDnD extends JPanel implements ActionListener { static JFrame frame; JTextArea textArea; JTextField textField; JList list; JTable table; JTree tree; JColorChooser colorChooser; JCheckBox toggleDnD; 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.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION); 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)); } protected JPanel createVerticalBoxPanel() { JPanel p = new JPanel(); p.setLayout(new BoxLayout(p, BoxLayout.PAGE_AXIS)); p.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5)); return p; } public JPanel createPanelForComponent(JComponent comp, String title) { JPanel panel = new JPanel(new BorderLayout()); panel.add(comp, BorderLayout.CENTER); if (title != null) { panel.setBorder(BorderFactory.createTitledBorder(title)); } return panel; } public void actionPerformed(ActionEvent e) { if ("toggleDnD".equals(e.getActionCommand())) { boolean toggle = toggleDnD.isSelected(); textArea.setDragEnabled(toggle); textField.setDragEnabled(toggle); list.setDragEnabled(toggle); table.setDragEnabled(toggle); tree.setDragEnabled(toggle); colorChooser.setDragEnabled(toggle); } } /** * Create the GUI and show it. For thread safety, this method should be * invoked from the event-dispatching thread. */ private static void createAndShowGUI() { //Make sure we have nice window decorations. JFrame.setDefaultLookAndFeelDecorated(true); //Create and set up the window. frame = new JFrame("BasicDnD"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Create and set up the content pane. JComponent newContentPane = new BasicDnD(); 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() { createAndShowGUI(); } }); } }