/*
 * Example1.java
 *
 * Created on Mon Aug 12 2002
 */
 
import com.brunchboy.util.swing.relativelayout.*;

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

/**
 * Example of building an "about box" with the RelativeLayout layout manager.
 * This version uses normal Java constructors to create all the constraints.
 * <p>
 *
 * @author  James Elliott, jim@brunchboy.com
 * @version $Id: Example1.java,v 1.5 2002/08/19 01:23:24 jim Exp $
 **/
public class Example1 {
    
    /**
     * Provides access to the CVS version of this class.
     **/
    public static final String VERSION =
	"$Id: Example1.java,v 1.5 2002/08/19 01:23:24 jim Exp $";


    /**
     * Display the application's "about box". <p>
     * 
     * @return the window in which the information is displayed.
     **/
    public static JFrame showAboutBox() {
        // Create the about box and assign it a RelativeLayout.
        final JFrame aboutBox = new JFrame("About Example 1");
        aboutBox.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
        RelativeLayout ourLayout = new RelativeLayout();
        aboutBox.getContentPane().setLayout(ourLayout);

        // Add the application title, with a font size of twenty points.
        JLabel title = new JLabel("Example 1");
        title.setFont(title.getFont().deriveFont(20.0f));
        aboutBox.getContentPane().add(title, "title");

        // Position the title as specified by the UI sketch: Ten pixels
        // below the top of the window, centered horizontally.
        ourLayout.addConstraint("title", AttributeType.TOP,
            new AttributeConstraint(DependencyManager.ROOT_NAME,
                                    AttributeType.TOP, 10));
        ourLayout.addConstraint("title", AttributeType.HORIZONTAL_CENTER,
            new AttributeConstraint(DependencyManager.ROOT_NAME,
                                    AttributeType.HORIZONTAL_CENTER));

        // Add the version number, positioned eight pixels below the title,
        // and five pixels from the left edge of the window.
        aboutBox.getContentPane().add(new JLabel("Version 2.0"), "version");
        ourLayout.addConstraint("version", AttributeType.TOP,
            new AttributeConstraint("title", AttributeType.BOTTOM, 8));
        ourLayout.addConstraint("version", AttributeType.LEFT,
            new AttributeConstraint(DependencyManager.ROOT_NAME,
                                    AttributeType.LEFT, 5));

        // Add the date, at the same height as the version, five pixels from
        // the right edge of the window.
        aboutBox.getContentPane().add(new JLabel("December, 2002"), "date");
        ourLayout.addConstraint("date", AttributeType.TOP,
            new AttributeConstraint("version", AttributeType.TOP));
        ourLayout.addConstraint("date", AttributeType.RIGHT,
            new AttributeConstraint(DependencyManager.ROOT_NAME,
                                    AttributeType.RIGHT, -5));
        
        // Create the scrolling details area, and fill it with enough
        // "information" to scroll.
        JTextArea details = new JTextArea("This is where the details go...\n");
        details.setEditable(false);
        details.setLineWrap(true);
        details.setWrapStyleWord(true);
	for (int i = 1; i < 10; i++) {
	    details.append("Filler line " + i + '\n');
	}
        aboutBox.getContentPane().add(new JScrollPane(details), "details");

        // Position it as in the sketch, with left and right edges flush with
        // the two text areas above, and top and bottom boundaries relative to
        // them and the "OK" button. Notice that we can set up the constraint
        // to the button even though that's not yet been added.
        ourLayout.addConstraint("details", AttributeType.LEFT,
            new AttributeConstraint("version", AttributeType.LEFT));
        ourLayout.addConstraint("details", AttributeType.RIGHT,
            new AttributeConstraint("date", AttributeType.RIGHT));
        ourLayout.addConstraint("details", AttributeType.TOP,
            new AttributeConstraint("version", AttributeType.BOTTOM, 4));
        ourLayout.addConstraint("details", AttributeType.BOTTOM,
            new AttributeConstraint("ok", AttributeType.TOP, -4));

        // Finally, add the "OK" button, demonstrating a different way to
        // center a component in the window.
        JButton okButton = new JButton("OK");
        aboutBox.getContentPane().add(okButton, "ok");
        ourLayout.addConstraint("ok", AttributeType.HORIZONTAL_CENTER,
            new AxisConstraint(DependencyManager.ROOT_NAME,
                               AttributeAxis.HORIZONTAL, 0.5));
        ourLayout.addConstraint("ok", AttributeType.BOTTOM,
            new AttributeConstraint(DependencyManager.ROOT_NAME,
                                    AttributeType.BOTTOM, -10));

        // Arrange it so that clicking the "OK" button closes the window.
        okButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    aboutBox.setVisible(false);
                }
        });

        // Set the initial size of the frame and show it on the screen.
        aboutBox.setSize(300, 200);
        aboutBox.setVisible(true);

        return aboutBox;
    }


    /**
     * Displays the about box when invoked from the command line.
     **/
    public static void main(String args[]) {
        // Show the about box.
        JFrame aboutBox = showAboutBox();

        // Wait for the about box to be closed, and then exit. (In a real app,
        // we wouldn't care about the window closing, but for this example,
        // be nice and exit the demo once it closes.)
        while(aboutBox.isVisible()) {
            try {
                Thread.sleep(500);
            }
            catch (InterruptedException ie) {
                ie.printStackTrace();
                System.exit(1);
            }
        }
        System.exit(0);
    }
}