| /* |
| ******************************************************************************* |
| * Copyright (C) 1996-2006, International Business Machines Corporation and * |
| * others. All Rights Reserved. * |
| ******************************************************************************* |
| */ |
| |
| package com.ibm.icu.util; |
| |
| import com.ibm.icu.util.TimeZone; |
| import java.util.Date; |
| import java.util.Locale; |
| |
| /** |
| * <code>BuddhistCalendar</code> is a subclass of <code>GregorianCalendar</code> |
| * that numbers years since the birth of the Buddha. This is the civil calendar |
| * in some predominantly Buddhist countries such as Thailand, and it is used for |
| * religious purposes elsewhere. |
| * <p> |
| * The Buddhist calendar is identical to the Gregorian calendar in all respects |
| * except for the year and era. Years are numbered since the birth of the |
| * Buddha in 543 BC (Gregorian), so that 1 AD (Gregorian) is equivalent to 544 |
| * BE (Buddhist Era) and 1998 AD is 2541 BE. |
| * <p> |
| * The Buddhist Calendar has only one allowable era: <code>BE</code>. If the |
| * calendar is not in lenient mode (see <code>setLenient</code>), dates before |
| * 1/1/1 BE are rejected with an <code>IllegalArgumentException</code>. |
| * <p> |
| * This class should not be subclassed.</p> |
| * <p> |
| * BuddhistCalendar usually should be instantiated using |
| * {@link com.ibm.icu.util.Calendar#getInstance(ULocale)} passing in a <code>ULocale</code> |
| * with the tag <code>"@calendar=buddhist"</code>.</p> |
| * |
| * @see com.ibm.icu.util.Calendar |
| * @see com.ibm.icu.util.GregorianCalendar |
| * |
| * @author Laura Werner |
| * @author Alan Liu |
| * @stable ICU 2.8 |
| */ |
| public class BuddhistCalendar extends GregorianCalendar { |
| // jdk1.4.2 serialver |
| private static final long serialVersionUID = 2583005278132380631L; |
| private static String copyright = "Copyright \u00a9 1998 IBM Corp. All Rights Reserved."; |
| |
| //------------------------------------------------------------------------- |
| // Constructors... |
| //------------------------------------------------------------------------- |
| |
| /** |
| * Constant for the Buddhist Era. This is the only allowable <code>ERA</code> |
| * value for the Buddhist calendar. |
| * |
| * @see com.ibm.icu.util.Calendar#ERA |
| * @stable ICU 2.8 |
| */ |
| public static final int BE = 0; |
| |
| /** |
| * Constructs a <code>BuddhistCalendar</code> using the current time |
| * in the default time zone with the default locale. |
| * @stable ICU 2.8 |
| */ |
| public BuddhistCalendar() { |
| super(); |
| } |
| |
| /** |
| * Constructs a <code>BuddhistCalendar</code> based on the current time |
| * in the given time zone with the default locale. |
| * |
| * @param zone the given time zone. |
| * @stable ICU 2.8 |
| */ |
| public BuddhistCalendar(TimeZone zone) { |
| super(zone); |
| } |
| |
| /** |
| * Constructs a <code>BuddhistCalendar</code> based on the current time |
| * in the default time zone with the given locale. |
| * |
| * @param aLocale the given locale. |
| * @stable ICU 2.8 |
| */ |
| public BuddhistCalendar(Locale aLocale) { |
| super(aLocale); |
| } |
| |
| /** |
| * Constructs a <code>BuddhistCalendar</code> based on the current time |
| * in the default time zone with the given locale. |
| * |
| * @param locale the given ulocale. |
| * @draft ICU 3.2 |
| * @provisional This API might change or be removed in a future release. |
| */ |
| public BuddhistCalendar(ULocale locale) { |
| super(locale); |
| } |
| |
| /** |
| * Constructs a <code>BuddhistCalendar</code> based on the current time |
| * in the given time zone with the given locale. |
| * |
| * @param zone the given time zone. |
| * |
| * @param aLocale the given locale. |
| * @stable ICU 2.8 |
| */ |
| public BuddhistCalendar(TimeZone zone, Locale aLocale) { |
| super(zone, aLocale); |
| } |
| |
| /** |
| * Constructs a <code>BuddhistCalendar</code> based on the current time |
| * in the given time zone with the given locale. |
| * |
| * @param zone the given time zone. |
| * |
| * @param locale the given ulocale. |
| * @draft ICU 3.2 |
| * @provisional This API might change or be removed in a future release. |
| */ |
| public BuddhistCalendar(TimeZone zone, ULocale locale) { |
| super(zone, locale); |
| } |
| |
| /** |
| * Constructs a <code>BuddhistCalendar</code> with the given date set |
| * in the default time zone with the default locale. |
| * |
| * @param date The date to which the new calendar is set. |
| * @stable ICU 2.8 |
| */ |
| public BuddhistCalendar(Date date) { |
| this(); |
| setTime(date); |
| } |
| |
| /** |
| * Constructs a <code>BuddhistCalendar</code> with the given date set |
| * in the default time zone with the default locale. |
| * |
| * @param year The value used to set the calendar's {@link #YEAR YEAR} time field. |
| * |
| * @param month The value used to set the calendar's {@link #MONTH MONTH} time field. |
| * The value is 0-based. e.g., 0 for January. |
| * |
| * @param date The value used to set the calendar's {@link #DATE DATE} time field. |
| * @stable ICU 2.8 |
| */ |
| public BuddhistCalendar(int year, int month, int date) { |
| super(year, month, date); |
| } |
| |
| /** |
| * Constructs a BuddhistCalendar with the given date |
| * and time set for the default time zone with the default locale. |
| * |
| * @param year The value used to set the calendar's {@link #YEAR YEAR} time field. |
| * |
| * @param month The value used to set the calendar's {@link #MONTH MONTH} time field. |
| * The value is 0-based. e.g., 0 for January. |
| * |
| * @param date The value used to set the calendar's {@link #DATE DATE} time field. |
| * |
| * @param hour The value used to set the calendar's {@link #HOUR_OF_DAY HOUR_OF_DAY} time field. |
| * |
| * @param minute The value used to set the calendar's {@link #MINUTE MINUTE} time field. |
| * |
| * @param second The value used to set the calendar's {@link #SECOND SECOND} time field. |
| * @stable ICU 2.8 |
| */ |
| public BuddhistCalendar(int year, int month, int date, int hour, |
| int minute, int second) |
| { |
| super(year, month, date, hour, minute, second); |
| } |
| |
| |
| //------------------------------------------------------------------------- |
| // The only practical difference from a Gregorian calendar is that years |
| // are numbered since the birth of the Buddha. A couple of overrides will |
| // take care of that.... |
| //------------------------------------------------------------------------- |
| |
| // Starts in -543 AD, ie 544 BC |
| private static final int BUDDHIST_ERA_START = -543; |
| |
| /** |
| * @stable ICU 2.8 |
| */ |
| protected int handleGetExtendedYear() { |
| int year; |
| if (newerField(EXTENDED_YEAR, YEAR) == EXTENDED_YEAR) { |
| year = internalGet(EXTENDED_YEAR, 1); |
| } else { |
| // Ignore the era, as there is only one |
| year = internalGet(YEAR, 1); |
| } |
| return year; |
| } |
| |
| // Return JD of start of given month/year |
| /** |
| * @stable ICU 2.8 |
| */ |
| protected int handleComputeMonthStart(int eyear, int month, boolean useMonth) { |
| return super.handleComputeMonthStart(eyear + BUDDHIST_ERA_START, month, useMonth); |
| } |
| |
| /** |
| * @stable ICU 2.8 |
| */ |
| protected void handleComputeFields(int julianDay) { |
| super.handleComputeFields(julianDay); |
| int y = internalGet(EXTENDED_YEAR) - BUDDHIST_ERA_START; |
| internalSet(EXTENDED_YEAR, y); |
| internalSet(ERA, 0); |
| internalSet(YEAR, y); |
| } |
| |
| /** |
| * Override GregorianCalendar. There is only one Buddhist ERA. We |
| * should really handle YEAR, YEAR_WOY, and EXTENDED_YEAR here too to |
| * implement the 1..5000000 range, but it's not critical. |
| * @stable ICU 2.8 |
| */ |
| protected int handleGetLimit(int field, int limitType) { |
| if (field == ERA) { |
| return BE; |
| } |
| return super.handleGetLimit(field, limitType); |
| } |
| |
| /** |
| * Return the current Calendar type. |
| * @return type of calendar (gregorian, etc.) |
| * @internal ICU 3.0 |
| * @deprecated This API is ICU internal only. |
| */ |
| public String getType() { |
| return "buddhist"; |
| } |
| |
| /* |
| private static CalendarFactory factory; |
| public static CalendarFactory factory() { |
| if (factory == null) { |
| factory = new CalendarFactory() { |
| public Calendar create(TimeZone tz, ULocale loc) { |
| return new BuddhistCalendar(tz, loc); |
| } |
| |
| public String factoryName() { |
| return "Buddhist"; |
| } |
| }; |
| } |
| return factory; |
| } |
| */ |
| } |