1 /*
2 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
3 *
4 * This software is open source.
5 * See the bottom of this file for the licence.
6 */
7
8 package org.dom4j.swing;
9
10 import java.util.Enumeration;
11
12 import javax.swing.tree.TreeNode;
13
14 import org.dom4j.Node;
15
16 /***
17 * <p>
18 * <code>LeafTreeNode</code> implements the Swing TreeNode interface to bind a
19 * leaf XML nodes to a Swing TreeModel.
20 * </p>
21 *
22 * @author <a href="mailto:james.strachan@metastuff.com">James Strachan </a>
23 * @author Jakob Jenkov
24 * @version $Revision: 1.7 $
25 */
26 public class LeafTreeNode implements TreeNode {
27 protected static final Enumeration EMPTY_ENUMERATION = new Enumeration() {
28 public boolean hasMoreElements() {
29 return false;
30 }
31
32 public Object nextElement() {
33 return null;
34 }
35 };
36
37 /*** The parent node of this TreeNode */
38 private TreeNode parent;
39
40 /*** The dom4j Node which contains the */
41 protected Node xmlNode;
42
43 public LeafTreeNode() {
44 }
45
46 public LeafTreeNode(Node xmlNode) {
47 this.xmlNode = xmlNode;
48 }
49
50 public LeafTreeNode(TreeNode parent, Node xmlNode) {
51 this.parent = parent;
52 this.xmlNode = xmlNode;
53 }
54
55 // TreeNode methods
56 // -------------------------------------------------------------------------
57 public Enumeration children() {
58 return EMPTY_ENUMERATION;
59 }
60
61 public boolean getAllowsChildren() {
62 return false;
63 }
64
65 public TreeNode getChildAt(int childIndex) {
66 return null;
67 }
68
69 public int getChildCount() {
70 return 0;
71 }
72
73 public int getIndex(TreeNode node) {
74 return -1;
75 }
76
77 public TreeNode getParent() {
78 return parent;
79 }
80
81 public boolean isLeaf() {
82 return true;
83 }
84
85 public String toString() {
86 // should maybe do things differently based on content?
87 String text = xmlNode.getText();
88
89 return (text != null) ? text.trim() : "";
90 }
91
92 // Properties
93 // -------------------------------------------------------------------------
94
95 /***
96 * Sets the parent of this node but doesn't change the parents children
97 *
98 * @param parent
99 * DOCUMENT ME!
100 */
101 public void setParent(LeafTreeNode parent) {
102 this.parent = parent;
103 }
104
105 public Node getXmlNode() {
106 return xmlNode;
107 }
108 }
109
110 /*
111 * Redistribution and use of this software and associated documentation
112 * ("Software"), with or without modification, are permitted provided that the
113 * following conditions are met:
114 *
115 * 1. Redistributions of source code must retain copyright statements and
116 * notices. Redistributions must also contain a copy of this document.
117 *
118 * 2. Redistributions in binary form must reproduce the above copyright notice,
119 * this list of conditions and the following disclaimer in the documentation
120 * and/or other materials provided with the distribution.
121 *
122 * 3. The name "DOM4J" must not be used to endorse or promote products derived
123 * from this Software without prior written permission of MetaStuff, Ltd. For
124 * written permission, please contact dom4j-info@metastuff.com.
125 *
126 * 4. Products derived from this Software may not be called "DOM4J" nor may
127 * "DOM4J" appear in their names without prior written permission of MetaStuff,
128 * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
129 *
130 * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
131 *
132 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
133 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
134 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
135 * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
136 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
137 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
138 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
139 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
140 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
141 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
142 * POSSIBILITY OF SUCH DAMAGE.
143 *
144 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
145 */