/**
 * SunClock displays a world map showing the sunrise and sunset terminators.<p>
 *
 * Copyright &copy; 1996-1998 Martin Minow. All Rights Reserved.<p>
 * World map copyright &copy; 1992-97 Apple Computer Inc. All Rights Reserved.
 * Used by permission.<p>
 * Moon Image from Michael Myers
 *
 * Permission to use, copy, modify, and redistribute this software and its
 * documentation for personal, non-commercial use is hereby granted provided that
 * this copyright notice and appropriate documentation appears in all copies. This
 * software may not be distributed for fee or as part of commercial, "shareware,"
 * and/or not-for-profit endevors including, but not limited to, CD-ROM collections,
 * online databases, and subscription services without specific license.<p>
 *
 * @author <a href="mailto:minow@merrymeet.com">Martin Minow</a>
 * @author <a href="http://www.netavs.com:80/~mhmyers/moon.html">Michael Myers (moon image)</a>
 * @version 1.2
 * 1996.09.15, revised 1997.11.21
 * Set tabs every 4 characters.
 */

// package Classes;

import java.util.*;
import java.awt.*;
import java.text.*;

public class AboutSunClock extends OutlineDialog
				implements Constants
{
	private static final String sunClockInfoText	=
	"0\tCopyright \u00A9 1996-1998 Martin Minow\n"
	+ "0\tAll rights reserved.\n"
	+ "0\tmailto:minow@merrymeet.com\n"
	+ "0\tAbout SunClock\n"
	+ "1\tSunClock displays the current time, phase of the\n"
	+ "1\tmoon, times of sunrise and sunset, and a map of the\n"
	+ "1\tworld showing the areas of night and day and the\n"
	+ "1\textent of twilight.\n"
	+ "1\tSunclock also displays the times of sunrise, sunset,\n"
	+ "1\tand twilight, as well as times associated with the moon.\n"
	+ "0\tConfiguring SunClock\n"
	+ "1\tYou can specify your location by entering latitude,\n"
	+ "1\tlongitude, and the timezone offset in the entry fields,\n"
	+ "1\tor in HTML parameters on the Web page.\n"
	+ "1\tLatitude is in degrees, North is positive.\n"
	+ "2\tLatitude may be entered as a fractional degree or\n"
	+ "2\tas Degree:Minute, tagged with 'N' or 'S'. For example,\n"
	+ "2\tSan Francisco may be entered as \"37:48N\" or \"37.8\".\n"
	+ "2\tThe colon is necessary, and there may be no spaces in the entry.\n"
	+ "1\tLongitude is in degrees, East is positive.\n"
	+ "2\tLongitude may be entered as a fractional degree or\n"
	+ "2\tas Degree:Minute, tagged with 'E' or 'W'. For example,\n"
	+ "2\tSan Francisco may be entered as \"122:24W\" or \"-122.4\".\n"
	+ "2\tThe colon is necessary, and there may be no spaces in the entry.\n"
	+ "1\tTimezone offset is in minutes, East is positive.\n"
	+ "2\tTimezone may also be entered as \"HH:MM\" where\n"
	+ "2\tHH is hours and MM is minutes. For example, San\n"
	+ "2\tFrancisco (Pacific Standard Time) may be entered\n"
	+ "2\tas -8:00 or -480.\n" 
	+ "0\tReligous Observation\n"
	+ "1\tFor several religons, notably Judiasm and Islam,\n"
	+ "1\ttimes associated with sunrise and sunset are used\n"
	+ "1\tto determine the time of religious observation and\n"
	+ "1\tobligation. For example, the Jewish Sabbath ends at\n"
	+ "1\tthe time when \"three stars\" are observable after\n"
	+ "1\tsunset, which is specified by the Talmud as when\n"
	+ "1\tthe sun is 9 degrees below the horizon.\n"
	+ "1\tWhile SunClock can be used to compute these times,\n"
	+ "1\tit does not presume to provide theologically-correct\n"
	+ "1\tresults. It should be noted that the rules are\n"
	+ "1\textremely complex, especially at high latitudes when\n"
	+ "1\tthe sun does not set or rise during part of the year.\n"
	+ "1\tYou should consult a religous advisor for guidance in\n"
	+ "1\tinterpreting the results of this program.\n"
	;

	private SunClockData		sunClockData;
	
	public AboutSunClock(
			SunClockData		sunClockData
		)
	{
		super(sunClockData.getSunClockApplet(), "About SunClock");
		this.sunClockData		= sunClockData;
		setFont(sunClockData.getDisplayFont());
		StringBuffer		text = new StringBuffer(sunClockInfoText);
		text.append("0\tJava support information" + "\n");
		try {
			text.append(
				"1\tJava version: "
				+ System.getProperty("java.version")
				+ "\n"
			);
		}
		catch (SecurityException e) { }
		try {
			text.append(
				"1\tJava class version: "
				+ System.getProperty("java.class.version")
				+ "\n"
			);
		}
		catch (SecurityException e) { }
		if (false) {
			/*
			 * For debugging, display the timezones.
			 * This is really slow (because we compute the
			 * daylight savings time rules).
			 */
			String[]	timezones		= TimeZone.getAvailableIDs();
			int			nTimezones		= timezones.length;
			text.append("0\tAvailable timezones (" + nTimezones + "):\n");
			Date		now				= sunClockData.getJavaDate();
			for (int i = 0; i < nTimezones; i++) {
				/*
				 * \f signals fixed-width font. Ugly hack, sorry.
				 */
				text.append("1\t\f" +
					Astro.getTimeZoneInfo(timezones[i], now)
					+ "\n"
				);
			}
			text.append("1\t\fSystem default timezone "
				+ Astro.getTimeZoneInfo(
					TimeZone.getDefault().getID(), now)
				+ "\n"
			);
		}	
		if (false) {
			/*
			 * For debugging, display the fonts.
			 */
			text.append("0\tAvailable Fonts:\n");
			String[] fontNames = Toolkit.getDefaultToolkit().getFontList();
			for (int i = 0; i < fontNames.length; i++) {
				text.append("1\t" + fontNames[i] + "\n");
			}
			text.append("1\tDisplay font = "
						+ sunClockData.getDisplayFont().toString()
						+ "\n"
					);
		}
		text.append("0\tKnown bugs:\n"
			+ "1\tThe moon should be upside down if you are in the\n"
			+ "1\tSouthern Hemisphere.\n"
			+ "1\tThe angle of the moon's bright limb depends on the\n"
			+ "1\tsun's position. This requires code and thought.\n"
			+ "1\tThe Muslim and Jewish prayer times should be checked with\n"
			+ "1\tappropriate religious experts.\n"
		);
		addText(text.toString());
		makeDialogVisible();
	}
}