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Java > Open Source Codes > org > netbeans > modules > tasklist > usertasks > dependencies > UserTaskTreeModel


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 package org.netbeans.modules.tasklist.usertasks.dependencies;
21
22 import javax.swing.tree.TreeModel JavaDoc;
23 import org.netbeans.modules.tasklist.core.util.ObjectList;
24 import org.netbeans.modules.tasklist.usertasks.model.UserTask;
25 import org.netbeans.modules.tasklist.usertasks.model.UserTaskList;
26
27 /**
28  * TreeModel for user tasks
29  *
30  * @author tl
31  */
32 public class UserTaskTreeModel implements TreeModel JavaDoc {
33     private UserTaskList utl;
34
35     /**
36      * Creates a new model for a task list.
37      *
38      * @param utl a task list
39      */
40     public UserTaskTreeModel(UserTaskList utl) {
41         this.utl = utl;
42     }
43
44     public boolean isLeaf(Object JavaDoc node) {
45         return extractObjectList(node).size() == 0;
46     }
47
48     public int getChildCount(Object JavaDoc parent) {
49         return extractObjectList(parent).size();
50     }
51
52     public void valueForPathChanged(javax.swing.tree.TreePath JavaDoc path, Object JavaDoc newValue) {
53     }
54
55     public void removeTreeModelListener(javax.swing.event.TreeModelListener JavaDoc l) {
56     }
57
58     public void addTreeModelListener(javax.swing.event.TreeModelListener JavaDoc l) {
59     }
60
61     public Object JavaDoc getChild(Object JavaDoc parent, int index) {
62         return extractObjectList(parent).get(index);
63     }
64
65     public Object JavaDoc getRoot() {
66         return utl;
67     }
68
69     public int getIndexOfChild(Object JavaDoc parent, Object JavaDoc child) {
70         return -1;
71     }
72     
73     /**
74      * Extracts children from a node.
75      *
76      * @param node a node
77      */
78     private ObjectList extractObjectList(Object JavaDoc node) {
79         if (node instanceof UserTaskList)
80             return ((UserTaskList) node).getSubtasks();
81         else
82             return ((UserTask) node).getSubtasks();
83     }
84 }
85
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