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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/examples/gnu/classpath/examples/swing/TreeDemo.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/examples/gnu/classpath/examples/swing/TreeDemo.java | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/examples/gnu/classpath/examples/swing/TreeDemo.java b/gcc-4.4.3/libjava/classpath/examples/gnu/classpath/examples/swing/TreeDemo.java new file mode 100644 index 000000000..8da375071 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/examples/gnu/classpath/examples/swing/TreeDemo.java @@ -0,0 +1,318 @@ +/* TreeDemo.java -- Demostrates JTree + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.classpath.examples.swing; + +import java.awt.BorderLayout; +import java.awt.event.ActionEvent; +import java.awt.event.ActionListener; + +import javax.swing.ButtonGroup; +import javax.swing.JButton; +import javax.swing.JCheckBox; +import javax.swing.JComponent; +import javax.swing.JFrame; +import javax.swing.JLabel; +import javax.swing.JPanel; +import javax.swing.JRadioButton; +import javax.swing.JScrollPane; +import javax.swing.JTree; +import javax.swing.SwingUtilities; +import javax.swing.event.TreeSelectionEvent; +import javax.swing.event.TreeSelectionListener; +import javax.swing.tree.DefaultMutableTreeNode; +import javax.swing.tree.DefaultTreeModel; +import javax.swing.tree.DefaultTreeSelectionModel; +import javax.swing.tree.TreePath; + +public class TreeDemo + extends JPanel + implements ActionListener +{ + + TreeDemo() + { + super(); + createContent(); + } + + private void createContent() + { + // non-leafs + DefaultMutableTreeNode root = new DefaultMutableTreeNode("Exotic Subsistence"); + DefaultMutableTreeNode fruit = new DefaultMutableTreeNode("Interesting Fruit"); + DefaultMutableTreeNode veg = new DefaultMutableTreeNode("Extraordinary Vegetables"); + DefaultMutableTreeNode liq = new DefaultMutableTreeNode("Peculiar Liquids"); + + // leafs + DefaultMutableTreeNode f1 = new DefaultMutableTreeNode("Abiu"); + DefaultMutableTreeNode f2 = new DefaultMutableTreeNode("Bamboo Shoots"); + DefaultMutableTreeNode f3 = new DefaultMutableTreeNode("Breadfruit"); + DefaultMutableTreeNode f4 = new DefaultMutableTreeNode("Canistel"); + DefaultMutableTreeNode f5 = new DefaultMutableTreeNode("Duku"); + DefaultMutableTreeNode f6 = new DefaultMutableTreeNode("Guava"); + DefaultMutableTreeNode f7 = new DefaultMutableTreeNode("Jakfruit"); + DefaultMutableTreeNode f8 = new DefaultMutableTreeNode("Quaribea"); + + DefaultMutableTreeNode v1 = new DefaultMutableTreeNode("Amaranth"); + DefaultMutableTreeNode v2 = new DefaultMutableTreeNode("Kiwano"); + DefaultMutableTreeNode v3 = new DefaultMutableTreeNode("Leeks"); + DefaultMutableTreeNode v4 = new DefaultMutableTreeNode("Luffa"); + DefaultMutableTreeNode v5 = new DefaultMutableTreeNode("Chayote"); + DefaultMutableTreeNode v6 = new DefaultMutableTreeNode("Jicama"); + DefaultMutableTreeNode v7 = new DefaultMutableTreeNode("Okra"); + + DefaultMutableTreeNode l1 = new DefaultMutableTreeNode("Alcoholic"); + DefaultMutableTreeNode l11 = new DefaultMutableTreeNode("Caipirinha"); + DefaultMutableTreeNode l21 = new DefaultMutableTreeNode("Mojito"); + DefaultMutableTreeNode l31 = new DefaultMutableTreeNode("Margarita"); + DefaultMutableTreeNode l41 = new DefaultMutableTreeNode("Martini"); + DefaultMutableTreeNode l5 = new DefaultMutableTreeNode("Non Alcoholic"); + DefaultMutableTreeNode l55 = new DefaultMutableTreeNode("Babaji"); + DefaultMutableTreeNode l65 = new DefaultMutableTreeNode("Chikita"); + + root.add(fruit); + root.add(veg); + root.add(liq); + fruit.add(f1); + fruit.add(f2); + fruit.add(f3); + fruit.add(f4); + fruit.add(f5); + fruit.add(f6); + fruit.add(f7); + fruit.add(f8); + veg.add(v1); + veg.add(v2); + veg.add(v3); + veg.add(v4); + veg.add(v5); + veg.add(v6); + veg.add(v7); + liq.add(l1); + l1.add(l11); + l1.add(l21); + l1.add(l31); + l1.add(l41); + liq.add(l5); + l5.add(l55); + l5.add(l65); + + final JTree tree = new JTree(root); + tree.setLargeModel(true); + tree.setEditable(true); + final DefaultTreeSelectionModel selModel = new DefaultTreeSelectionModel(); + selModel.setSelectionMode( + DefaultTreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION); + tree.setSelectionModel(selModel); + + // buttons to add and delete + JButton add = new JButton("add element"); + add.addActionListener(new ActionListener() + { + public void actionPerformed(ActionEvent e) + { + for (int i = 0; i < tree.getRowCount(); i++) + { + if (tree.isRowSelected(i)) + { + TreePath p = tree.getPathForRow(i); + DefaultMutableTreeNode n = (DefaultMutableTreeNode) p. + getLastPathComponent(); + n.add(new DefaultMutableTreeNode("New Element")); + + // The expansion state of the parent node does not change + // by default. We will expand it manually, to ensure that the + // added node is immediately visible. + tree.expandPath(p); + + // Refresh the tree (.repaint would be not enough both in + // Classpath and Sun implementations). + DefaultTreeModel model = (DefaultTreeModel) tree.getModel(); + model.reload(n); + break; + } + } + } + }); + + // Demonstration of the various selection modes + final JCheckBox cbSingle = new JCheckBox("single selection"); + cbSingle.addActionListener(new ActionListener() + { + public void actionPerformed(ActionEvent e) + { + if (cbSingle.isSelected()) + selModel.setSelectionMode( + DefaultTreeSelectionModel.SINGLE_TREE_SELECTION); + else + selModel.setSelectionMode( + DefaultTreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION); + } + }); + + // Demonstration of the root visibility changes + final JCheckBox cbRoot = new JCheckBox("root"); + cbRoot.addActionListener(new ActionListener() + { + public void actionPerformed(ActionEvent e) + { + tree.setRootVisible(cbRoot.isSelected()); + } + }); + cbRoot.setSelected(true); + + // Demonstration of the tree selection listener. + final JLabel choice = new JLabel("Make a choice"); + tree.getSelectionModel().addTreeSelectionListener( + new TreeSelectionListener() + { + public void valueChanged(TreeSelectionEvent event) + { + TreePath was = event.getOldLeadSelectionPath(); + TreePath now = event.getNewLeadSelectionPath(); + String swas = + was == null ? "none":was.getLastPathComponent().toString(); + String snow = + now == null ? "none":now.getLastPathComponent().toString(); + choice.setText("From "+swas+" to "+snow); + } + } + ); + + setLayout(new BorderLayout()); + + JPanel p2 = new JPanel(); + p2.add(add); + p2.add(cbSingle); + p2.add(cbRoot); + + tree.getSelectionModel(). + setSelectionMode(DefaultTreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION); + + // Panel for selecting line style. + ActionListener l = new ActionListener() + { + public void actionPerformed(ActionEvent e) + { + JRadioButton b = (JRadioButton) e.getSource(); + tree.putClientProperty("JTree.lineStyle", b.getText()); + tree.repaint(); + } + }; + JPanel lineStylePanel = new JPanel(); + ButtonGroup buttons = new ButtonGroup(); + lineStylePanel.add(new JLabel("Line style: ")); + JRadioButton none = new JRadioButton("None"); + lineStylePanel.add(none); + buttons.add(none); + none.addActionListener(l); + JRadioButton angled = new JRadioButton("Angled"); + lineStylePanel.add(angled); + buttons.add(angled); + angled.addActionListener(l); + JRadioButton horizontal = new JRadioButton("Horizontal"); + lineStylePanel.add(horizontal); + buttons.add(horizontal); + horizontal.addActionListener(l); + p2.add(lineStylePanel); + + add(p2, BorderLayout.NORTH); + + add(new JScrollPane(tree), BorderLayout.CENTER); + add(choice, BorderLayout.SOUTH); + } + + public void actionPerformed(ActionEvent e) + { + if (e.getActionCommand().equals("CLOSE")) + { + System.exit(0); + } + } + + /** + * When the demo is run independently, the frame is displayed, so we should + * initialise the content panel (including the demo content and a close + * button). But when the demo is run as part of the Swing activity board, + * only the demo content panel is used, the frame itself is never displayed, + * so we can avoid this step. + */ + void initFrameContent() + { + JPanel closePanel = new JPanel(); + JButton closeButton = new JButton("Close"); + closeButton.setActionCommand("CLOSE"); + closeButton.addActionListener(this); + closePanel.add(closeButton); + add(closePanel, BorderLayout.SOUTH); + } + + public static void main(String[] args) + { + SwingUtilities.invokeLater + (new Runnable() + { + public void run() + { + TreeDemo app = new TreeDemo(); + app.initFrameContent(); + JFrame frame = new JFrame("Tree Demo"); + frame.getContentPane().add(app); + frame.pack(); + frame.setVisible(true); + } + }); + } + + /** + * Returns a DemoFactory that creates a TreeDemo. + * + * @return a DemoFactory that creates a TreeDemo + */ + public static DemoFactory createDemoFactory() + { + return new DemoFactory() + { + public JComponent createDemo() + { + return new TreeDemo(); + } + }; + } +} |