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Java > Open Source Codes > jdepend > swingui > AboutDialog


1 package jdepend.swingui;
2
3 import java.awt.*;
4 import java.awt.event.*;
5 import javax.swing.*;
6
7 /**
8  * The <code>AboutDialog</code> displays the about information.
9  *
10  * @author <b>Mike Clark</b>
11  * @author Clarkware Consulting, Inc.
12  */
13
14 class AboutDialog extends JDialog {
15
16     /**
17      * Constructs an <code>AboutDialog</code> with the specified parent frame.
18      *
19      * @param parent Parent frame.
20      */
21     public AboutDialog(JFrame parent) {
22         super(parent);
23
24         setTitle("About");
25
26         setResizable(false);
27
28         getContentPane().setLayout(new BorderLayout());
29         setSize(300, 200);
30
31         addWindowListener(new WindowAdapter() {
32
33             public void windowClosing(WindowEvent e) {
34                 dispose();
35             }
36         });
37
38         JPanel panel = new JPanel();
39         panel.setLayout(new GridBagLayout());
40
41         JLabel titleLabel = new JLabel("JDepend");
42         titleLabel.setFont(new Font("dialog", Font.BOLD, 18));
43
44         JLabel nameLabel = new JLabel("Mike Clark");
45         nameLabel.setFont(new Font("dialog", Font.PLAIN, 12));
46
47         JLabel companyLabel = new JLabel("Clarkware Consulting, Inc.");
48         companyLabel.setFont(new Font("dialog", Font.PLAIN, 12));
49
50         JLabel httpLabel = new JLabel("www.clarkware.com");
51         httpLabel.setFont(new Font("dialog", Font.PLAIN, 12));
52
53         JLabel blankLabel = new JLabel(" ");
54
55         JButton closeButton = createButton("Close");
56
57         panel.add(titleLabel, createConstraints(1, 1));
58
59         panel.add(new JLabel(" "), createConstraints(1, 2));
60
61         panel.add(nameLabel, createConstraints(1, 3));
62
63         panel.add(companyLabel, createConstraints(1, 4));
64
65         panel.add(httpLabel, createConstraints(1, 5));
66
67         panel.add(new JLabel(" "), createConstraints(1, 6));
68         panel.add(new JLabel(" "), createConstraints(1, 7));
69
70         panel.add(closeButton, createConstraints(1, 9));
71
72         getContentPane().add("Center", panel);
73
74     }
75
76     /**
77      * Creates and returns a button with the specified label.
78      *
79      * @param label Button label.
80      * @return Button.
81      */
82     private JButton createButton(String JavaDoc label) {
83
84         JButton button = new JButton(label);
85         button.addActionListener(new ActionListener() {
86
87             public void actionPerformed(ActionEvent e) {
88                 dispose();
89             }
90         });
91
92         return button;
93     }
94
95     /**
96      * Creates and returns a grid bag constraint with the specified x and y
97      * values.
98      *
99      * @param x X-coordinate.
100      * @param y Y-coordinate.
101      * @return GridBagConstraints
102      */
103     private GridBagConstraints createConstraints(int x, int y) {
104
105         GridBagConstraints constraints = new GridBagConstraints();
106         constraints.gridx = x;
107         constraints.gridy = y;
108         constraints.gridwidth = 1;
109         constraints.gridheight = 1;
110         constraints.anchor = GridBagConstraints.CENTER;
111         constraints.weightx = 0.0;
112         constraints.weighty = 0.0;
113
114         return constraints;
115     }
116
117 }
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