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Java > Open Source Codes > org > objectweb > util > explorer > swing > panel > WhitePanel


1 /*====================================================================
2
3 Objectweb Explorer Framework
4 Copyright (C) 2000-2004 INRIA - USTL - LIFL - GOAL
5 Contact: openccm@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): Jerome Moroy, Philippe Merle.
23 Contributor(s): ______________________________________.
24
25 ====================================================================*/
26 package org.objectweb.util.explorer.swing.panel;
27
28 import java.awt.BorderLayout JavaDoc;
29 import java.awt.Color JavaDoc;
30
31 import javax.swing.BoxLayout JavaDoc;
32 import javax.swing.JLabel JavaDoc;
33 import javax.swing.JPanel JavaDoc;
34
35 import org.objectweb.util.explorer.api.Panel;
36 import org.objectweb.util.explorer.api.TreeView;
37
38 /**
39  * This class represents an empty panel
40  *
41  * @author <a HREF="mailto:Jerome.Moroy@lifl.fr">Jerome Moroy</a>
42  * @version 0.1
43  */
44 public class WhitePanel
45     implements Panel JavaDoc {
46
47     JPanel JavaDoc panel_;
48
49     /**
50      * Default Constructor
51      */
52     public WhitePanel() {
53         this("");
54     }
55
56     /**
57      * Constructor with text
58      * Customizes the JPanel and adds the message in it.
59      */
60     public WhitePanel(String JavaDoc message) {
61         panel_ = new JPanel JavaDoc();
62         panel_.setBackground(Color.white);
63         panel_.setLayout(new BoxLayout JavaDoc(panel_, BoxLayout.Y_AXIS));
64         panel_.add(new JLabel JavaDoc(message), BorderLayout.CENTER);
65     }
66
67     /**
68      * Invokes just after instanciation
69      */
70     public void selected(TreeView treeView) {
71         Object JavaDoc o = treeView.getSelectedObject();
72         if (o != null)
73             panel_.add(new JLabel JavaDoc(o.toString()), BorderLayout.CENTER);
74     }
75
76     /**
77      * Provides the panel to display
78      * @return The panel to display
79      */
80     public Object JavaDoc getPanel(){
81         return panel_;
82     }
83
84     /**
85      * Invokes just before removing
86      */
87     public void unselected(TreeView treeView) {
88     }
89
90 }
91
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