Swing Hacks

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Chapter 5, Windows, Dialogs, and Frames

#39 Spin Open a Detail Pane

HACK

Now You See Me

To show a non-trivial use of the MoreInfoPanel, the TestMoreInfoPanel class

shown in Example 5-8 creates a

JOptionPane dialog, hijacks its content pane,

and puts that into a

MoreInfoPanel

as the top component. The bottom com-

ponent is a

JTextArea

with a more detailed (or obnoxious, in this case)

description of the warning in the dialog. This

MoreInfoPanel

is then reset as

the dialog’s content pane. The initial result looks like Figure 5-9.

Figure 5-9. A Warning dialog with a closed MoreInfoPanel

Example 5-8. A spin-open dialog using a MoreInfoPanel

import java.awt.*;

import javax.swing.*;

public class TestMoreInfoPanel {

public static void main (String[] args) {

JOptionPane pane =

new JOptionPane ("The action you have chosen to perform\n is " +

"not recommended.",

JOptionPane.WARNING_MESSAGE);

JDialog dialog = pane.createDialog (null, "Warning");

Container grabbedContent = dialog.getContentPane( );

JTextArea area =

new JTextArea ("No, seriously dude, you are about to totally "+

"bake your computer, if not your entire " +

"network, if you don't bail right now. Think " +

"I'm kidding? Would I go to such lengths to " +

"provide such an elaborate warning message if " +

"I were kidding? No, no, wait... you know " +

"what? Go ahead. Click OK and blow everything " +

"to kingdom come. See if I care.",

5, 40);

area.setLineWrap (true);

area.setWrapStyleWord (true);