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/**
* Spin - transparent threading solution for non-freezing Swing applications.
* Copyright (C) 2002 Sven Meier
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package spin.demo.prompt;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import spin.Spin;
import spin.demo.Assert;
/**
* A demonstration of GUI showing a callback prompt.
*/
public class CallbackGUI extends JPanel implements Prompt {
private JButton button = new JButton("Start");
private PromptBean promptBean;
/**
* Constructor.
*/
public CallbackGUI(PromptBean aPromptBean) {
this.promptBean = aPromptBean;
setLayout(new BorderLayout());
add(button, BorderLayout.CENTER);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
button.setEnabled(false);
promptBean.process((Prompt) Spin.over(CallbackGUI.this));
button.setEnabled(true);
}
});
}
/**
* Prompt.
*
* @param value
* the value to prompt
* @return <code>true</code> or <code>false</code>
*/
public boolean prompt(String value) {
Assert.onEDT();
return JOptionPane.YES_OPTION == JOptionPane.showConfirmDialog(
CallbackGUI.this, value, "Prompt", JOptionPane.YES_NO_OPTION);
}
/**
* Entrance to this demo.
*/
public static void main(String[] args) {
PromptBean promptBean = new PromptBeanImpl();
CallbackGUI callbackGUI = new CallbackGUI((PromptBean) Spin
.off(promptBean));
JFrame frame = new JFrame("Callback prompt");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(callbackGUI);
frame.pack();
frame.setVisible(true);
}
}
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