InfoDialogpublic class InfoDialog extends Dialog
| Fields Summary |
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| protected Button | button | | protected MultiLineLabel | label |
| Constructors Summary |
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public InfoDialog(Frame parent, String title, String message)
// Create a non-modal dialog with the specified title and parent
super(parent, title, false);
// Create and use a BorderLayout manager with 15 pixel spacing
this.setLayout(new BorderLayout(15, 15));
// Create the message component and add it to the window
// MultiLineLabel is a custom component defined later in this chapter
label = new MultiLineLabel(message, 20, 20);
this.add("Center", label);
// Create an Okay button in a Panel; add the Panel to the window
// Use a FlowLayout to center the button in the panel and give it margins.
// Note the nested use of containers and layout managers.
button = new Button("Okay");
Panel p = new Panel();
p.setLayout(new FlowLayout(FlowLayout.CENTER, 15, 15));
p.add(button);
this.add("South", p);
// Set the dialog size to the preferred size of its components
this.pack();
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| Methods Summary |
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| public boolean | action(java.awt.Event e, java.lang.Object arg)
if (e.target == button) {
this.hide(); // Pop the dialog down
this.dispose(); // Destroy it. Cannot be shown again after disposed
return true;
}
else return false;
| | public static void | main(java.lang.String[] args)A main method that demonstrates how to use this class, and allows testing
// Create, size, and show a frame because dialogs require a frame parent.
Frame f = new Frame("InfoDialog Test");
f.resize(100, 100); // Use setSize() in Java 1.1
f.show();
// Create an instance of InfoDialog, with title and message specified
InfoDialog d = new InfoDialog(f, "InfoDialog Test",
"This demo was written by David Flanagan\n" +
"Copyright (c) 1997 O'Reilly & Associates");
// And pop it up. It will pop itself down automatically.
d.show();
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