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Java > Open Source Codes > org > aspectj > debugger > gui > AJTreeWillExpandListener


1 /* -*- Mode: JDE; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2  *
3  * This file is part of the debugger and core tools for the AspectJ(tm)
4  * programming language; see http://aspectj.org
5  *
6  * The contents of this file are subject to the Mozilla Public License
7  * Version 1.1 (the "License"); you may not use this file except in
8  * compliance with the License. You may obtain a copy of the License at
9  * either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is AspectJ.
17  *
18  * The Initial Developer of the Original Code is Xerox Corporation. Portions
19  * created by Xerox Corporation are Copyright (C) 1999-2002 Xerox Corporation.
20  * All Rights Reserved.
21  */
22
23 package org.aspectj.debugger.gui;
24
25 import org.aspectj.debugger.base.*;
26
27 import java.util.*;
28
29 import javax.swing.tree.ExpandVetoException JavaDoc;
30 import javax.swing.tree.TreePath JavaDoc;
31 import javax.swing.event.TreeWillExpandListener JavaDoc;
32 import javax.swing.event.TreeExpansionEvent JavaDoc;
33
34 import com.sun.jdi.*;
35
36 public class AJTreeWillExpandListener
37     implements TreeWillExpandListener JavaDoc {
38
39     private AJTree tree = null;
40
41     public AJTreeWillExpandListener(AJTree tree) {
42         this.tree = tree;
43     }
44
45     boolean d = false;
46     public void treeWillExpand(TreeExpansionEvent JavaDoc event)
47         throws ExpandVetoException JavaDoc {
48         AJTreeNode node = (AJTreeNode) event.getPath().getLastPathComponent();
49         boolean ok = node.isOKToExpand();
50         if (d) System.out.println("node=" + node + " ok=" + ok + " to expand");
51         if (!ok) {
52             throw new ExpandVetoException JavaDoc(event);
53         }
54     }
55
56     public void treeWillCollapse(TreeExpansionEvent JavaDoc event)
57         throws ExpandVetoException JavaDoc {
58         AJTreeNode node = (AJTreeNode) event.getPath().getLastPathComponent();
59         boolean ok = node.isOKToCollapse();
60         if (d) System.out.println("node=" + node + " ok=" + ok + " to collapse");
61         if (!ok) {
62             throw new ExpandVetoException JavaDoc(event);
63         }
64     }
65 }
66
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