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Java > Open Source Codes > org > objectweb > util > browser > core > panel > WhitePanel


1 /*===========================================================================
2
3 ObjectWeb Naming Context Framework
4 Copyright (C) 2002 USTL - LIFL - GOAL
5 Contact: architecture@objectweb.org
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or any later version.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with this library; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 USA
21
22 Initial developer(s): Jérôme Moroy.
23 Contributor(s): ______________________________________.
24
25 ===========================================================================*/
26 package org.objectweb.util.browser.core.panel;
27
28 import javax.swing.BoxLayout JavaDoc;
29 import javax.swing.JLabel JavaDoc;
30 import javax.swing.JPanel JavaDoc;
31
32 import java.awt.*;
33
34 import org.objectweb.util.browser.api.TreeView;
35 import org.objectweb.util.browser.api.Panel;
36
37 /**
38  * This class represents an empty panel
39  *
40  * @author <a HREF="mailto:Jerome.Moroy@lifl.fr">Jerome Moroy</a>
41  * @version 0.1
42  */
43 public class WhitePanel
44     implements Panel JavaDoc {
45
46     JPanel JavaDoc panel_;
47
48     /**
49      * Default Constructor
50      */
51     public WhitePanel() {
52         this("");
53     }
54
55     /**
56      * Constructor with text
57      * Customizes the JPanel and adds the message in it.
58      */
59     public WhitePanel(String JavaDoc message) {
60         panel_ = new JPanel JavaDoc();
61         panel_.setBackground(Color.white);
62         panel_.setLayout(new BoxLayout JavaDoc(panel_, BoxLayout.Y_AXIS));
63         panel_.add(new JLabel JavaDoc(message), BorderLayout.CENTER);
64     }
65
66     /**
67      * Invokes just after instanciation
68      */
69     public void selected(TreeView treeView) {
70         Object JavaDoc o = treeView.getSelectedObject();
71         if (o != null)
72             panel_.add(new JLabel JavaDoc(o.toString()), BorderLayout.CENTER);
73     }
74
75     /**
76      * Provides the panel to display
77      * @return The panel to display
78      */
79     public JPanel JavaDoc getPanel(){
80         return panel_;
81     }
82
83     /**
84      * Invokes just before removing
85      */
86     public void unselected(TreeView treeView) {
87     }
88
89 }
90
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