0
|
1 /*
|
|
2 * Copyright 2000-2001 Sun Microsystems, Inc. All Rights Reserved.
|
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
4 *
|
|
5 * This code is free software; you can redistribute it and/or modify it
|
|
6 * under the terms of the GNU General Public License version 2 only, as
|
|
7 * published by the Free Software Foundation.
|
|
8 *
|
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT
|
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
12 * version 2 for more details (a copy is included in the LICENSE file that
|
|
13 * accompanied this code).
|
|
14 *
|
|
15 * You should have received a copy of the GNU General Public License version
|
|
16 * 2 along with this work; if not, write to the Free Software Foundation,
|
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
18 *
|
|
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
21 * have any questions.
|
|
22 *
|
|
23 */
|
|
24
|
|
25 package sun.jvm.hotspot.ui.tree;
|
|
26
|
|
27 import java.util.*;
|
|
28 import javax.swing.*;
|
|
29 import javax.swing.event.*;
|
|
30 import javax.swing.tree.*;
|
|
31
|
|
32 /** A very simple tree model which allows the root to be set, so we
|
|
33 can reuse the same model for various types of data; the
|
|
34 specialization is contained within the nodes. This tree model
|
|
35 operates on SimpleTreeNodes. */
|
|
36
|
|
37 public class SimpleTreeModel implements TreeModel {
|
|
38 private static final SimpleTreeNode singletonNullRoot = new SimpleTreeNode() {
|
|
39 public int getChildCount() { return 0; }
|
|
40 public SimpleTreeNode getChild(int index) { return null; }
|
|
41 public boolean isLeaf() { return true; }
|
|
42 public int getIndexOfChild(SimpleTreeNode child) { return 0; }
|
|
43 public String toString() { return ""; }
|
|
44 public String getName() { return toString(); }
|
|
45 public String getValue() { return toString(); }
|
|
46 };
|
|
47 private SimpleTreeNode root = singletonNullRoot;
|
|
48 /** List<TreeModelListener> */
|
|
49 private List listeners = new ArrayList();
|
|
50
|
|
51 public void setRoot(SimpleTreeNode node) {
|
|
52 if (node != null) {
|
|
53 root = node;
|
|
54 } else {
|
|
55 root = singletonNullRoot;
|
|
56 }
|
|
57 fireTreeStructureChanged();
|
|
58 }
|
|
59
|
|
60 public Object getRoot() {
|
|
61 return root;
|
|
62 }
|
|
63
|
|
64 public Object getChild(Object parent, int index) {
|
|
65 return ((SimpleTreeNode) parent).getChild(index);
|
|
66 }
|
|
67
|
|
68 public int getChildCount(Object parent) {
|
|
69 return ((SimpleTreeNode) parent).getChildCount();
|
|
70 }
|
|
71
|
|
72 public boolean isLeaf(Object node) {
|
|
73 if (node == null) {
|
|
74 return true;
|
|
75 }
|
|
76 return ((SimpleTreeNode) node).isLeaf();
|
|
77 }
|
|
78
|
|
79 /** Unsupported operation */
|
|
80 public void valueForPathChanged(TreePath path, Object newValue) {
|
|
81 throw new UnsupportedOperationException();
|
|
82 }
|
|
83
|
|
84 public int getIndexOfChild(Object parent, Object child) {
|
|
85 return ((SimpleTreeNode) parent).getIndexOfChild((SimpleTreeNode) child);
|
|
86 }
|
|
87
|
|
88 public void addTreeModelListener(TreeModelListener l) {
|
|
89 listeners.add(l);
|
|
90 }
|
|
91
|
|
92 public void removeTreeModelListener(TreeModelListener l) {
|
|
93 listeners.remove(l);
|
|
94 }
|
|
95
|
|
96 public void fireTreeStructureChanged() {
|
|
97 TreeModelEvent e = new TreeModelEvent(getRoot(), new Object[] { getRoot() }, null, null);
|
|
98 for (Iterator iter = listeners.iterator(); iter.hasNext(); ) {
|
|
99 TreeModelListener l = (TreeModelListener) iter.next();
|
|
100 l.treeStructureChanged(e);
|
|
101 }
|
|
102 }
|
|
103 }
|