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package gjt;
import java.awt.*;
/**
* Similar in fuction to the MessageDialog, YesNoDialog poses
* a question, that is answered by selection of either a Yes
* button or a No button.<p>
*
* Note that the YesNoDialog is a singleton - meaning there is
* only one YesNoDialog in existence per applet. Clients
* may obtain the YesNoDialog by invoking getYesNoDialog().<p>
*
* @version 1.0, Apr 1 1996
* @author David Geary
* @see GJTDialog
* @see MessageDialog
* @see gjt.test.DialogTest
*/
public class YesNoDialog extends GJTDialog {
static private YesNoDialog _theYesNoDialog;
private Button yesButton;
private Button noButton;
private String message;
private boolean answer = false;
private ButtonPanel buttonPanel = new ButtonPanel();
static public YesNoDialog getYesNoDialog( Frame frame,
DialogClient client,
String title,
String message) {
if(_theYesNoDialog == null)
_theYesNoDialog = new YesNoDialog(frame,client,
title,message);
else {
_theYesNoDialog.setClient (client);
_theYesNoDialog.setTitle (title);
_theYesNoDialog.setMessage(message);
}
return _theYesNoDialog;
}
private YesNoDialog(Frame frame, DialogClient client,
String title, String message) {
super(frame, title, client, true);
yesButton = buttonPanel.add("Yes");
noButton = buttonPanel.add("No");
setLayout(new BorderLayout());
add("Center", new YesNoPanel(message));
add("South", buttonPanel);
pack();
}
public void show() {
yesButton.requestFocus();
super.show();
}
public boolean answeredYes() {
return answer;
}
public boolean action(Event event, Object what) {
if(event.target == yesButton) answer = true;
else answer = false;
hide();
client.dialogDismissed(this);
return true;
}
private void setMessage(String message) {
this.message = message;
}
}
class YesNoPanel extends Panel {
public YesNoPanel(String question) {
add("Center", new Label(question, Label.CENTER));
}
public Insets insets() {
return new Insets(10,10,10,10);
}
}
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