proposal/sandbox/input/src/main/org/apache/tools/ant/input/SwingInputHandler.java

/*
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package org.apache.tools.ant.input;

import org.apache.tools.ant.BuildException;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Vector;

/**
 * Very, very, very simplistic GUI input handler, nothing more than a
 * proof of concept.
 *
 * <p>I don't intend to commit this to the main branch if my proposal
 * should get accepted.</p>
 *
 * <p>I guess I can use this code to demonstrate why nobody should
 * hire me to do GUI stuff 8-)</p>
 *
 * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
 * @version $Revision$
 */
public class SwingInputHandler implements InputHandler {

    private Component inputComponent;
    private boolean done = false;

    public SwingInputHandler() {
    }

    public synchronized void handleInput(final InputRequest request) 
        throws BuildException {
        final JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
        Container cp = frame.getContentPane();
        cp.setLayout(new BorderLayout());
        
        JPanel p = new JPanel();
        p.setLayout(new BoxLayout(p, BoxLayout.X_AXIS));
        p.add(new JLabel(request.getPrompt()));
        if (request instanceof MultipleChoiceInputRequest) {
            JComboBox c = new JComboBox(((MultipleChoiceInputRequest) request).getChoices());
            c.setEditable(false);
            p.add(c);
            inputComponent = c;
        } else {
            p.add((inputComponent = new JTextField(20)));
        }
        
        cp.add(p, BorderLayout.CENTER);
        JButton button = new JButton("OK");
        button.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    request.setInput(getInput());
                    frame.dispose();
                    synchronized (SwingInputHandler.this) {
                        SwingInputHandler.this.done = true;
                        SwingInputHandler.this.notifyAll();
                    }
                }
            });
        cp.add(button, BorderLayout.SOUTH);
        frame.pack();
        frame.show();

        while (!done) {
            try {
                wait();
            } catch (InterruptedException e) {}
        }
        done = false;
    }

    private String getInput() {
        if (inputComponent instanceof JTextField) {
            return ((JTextField) inputComponent).getText();
        } else {
            return ((JComboBox) inputComponent).getSelectedItem().toString();
        }
    }
}