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/*
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* Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.util;
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import java.util.Calendar;
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import java.util.GregorianCalendar;
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import java.util.HashMap;
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import java.util.Locale;
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import java.util.Map;
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import java.util.ResourceBundle;
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import java.util.TimeZone;
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import sun.util.resources.LocaleData;
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public class BuddhistCalendar extends GregorianCalendar {
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//////////////////
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// Class Variables
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//////////////////
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private static final long serialVersionUID = -8527488697350388578L;
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private static final int buddhistOffset = 543;
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///////////////
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// Constructors
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///////////////
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/**
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* Constructs a default BuddhistCalendar using the current time
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* in the default time zone with the default locale.
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*/
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public BuddhistCalendar() {
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super();
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}
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/**
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* Constructs a BuddhistCalendar based on the current time
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* in the given time zone with the default locale.
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* @param zone the given time zone.
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*/
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public BuddhistCalendar(TimeZone zone) {
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super(zone);
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}
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/**
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* Constructs a BuddhistCalendar based on the current time
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* in the default time zone with the given locale.
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* @param aLocale the given locale.
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*/
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public BuddhistCalendar(Locale aLocale) {
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super(aLocale);
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}
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/**
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* Constructs a BuddhistCalendar based on the current time
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* in the given time zone with the given locale.
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* @param zone the given time zone.
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* @param aLocale the given locale.
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*/
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public BuddhistCalendar(TimeZone zone, Locale aLocale) {
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super(zone, aLocale);
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}
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/////////////////
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// Public methods
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/////////////////
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/**
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* Compares this BuddhistCalendar to an object reference.
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* @param obj the object reference with which to compare
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* @return true if this object is equal to <code>obj</code>; false otherwise
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*/
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public boolean equals(Object obj) {
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return obj instanceof BuddhistCalendar
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&& super.equals(obj);
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}
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/**
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* Override hashCode.
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* Generates the hash code for the BuddhistCalendar object
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*/
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public int hashCode() {
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return super.hashCode() ^ buddhistOffset;
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}
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/**
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* Gets the value for a given time field.
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* @param field the given time field.
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* @return the value for the given time field.
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*/
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public int get(int field)
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{
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if (field == YEAR) {
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return super.get(field) + yearOffset;
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}
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return super.get(field);
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}
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/**
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* Sets the time field with the given value.
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* @param field the given time field.
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* @param value the value to be set for the given time field.
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*/
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public void set(int field, int value)
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{
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if (field == YEAR) {
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super.set(field, value - yearOffset);
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} else {
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super.set(field, value);
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}
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}
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/**
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* Adds the specified (signed) amount of time to the given time field.
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* @param field the time field.
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* @param amount the amount of date or time to be added to the field.
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*/
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public void add(int field, int amount)
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{
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int savedYearOffset = yearOffset;
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yearOffset = 0;
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try {
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super.add(field, amount);
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} finally {
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yearOffset = savedYearOffset;
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}
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}
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/**
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* Add to field a signed amount without changing larger fields.
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* A negative roll amount means to subtract from field without changing
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* larger fields.
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* @param field the time field.
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* @param amount the signed amount to add to <code>field</code>.
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*/
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public void roll(int field, int amount)
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{
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int savedYearOffset = yearOffset;
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yearOffset = 0;
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try {
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super.roll(field, amount);
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} finally {
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yearOffset = savedYearOffset;
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}
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}
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public String getDisplayName(int field, int style, Locale locale) {
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if (field != ERA) {
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return super.getDisplayName(field, style, locale);
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}
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// Handle Thai BuddhistCalendar specific era names
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if (field < 0 || field >= fields.length ||
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style < SHORT || style > LONG) {
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throw new IllegalArgumentException();
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}
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if (locale == null) {
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throw new NullPointerException();
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}
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ResourceBundle rb = LocaleData.getDateFormatData(locale);
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String[] eras = rb.getStringArray(getKey(style));
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return eras[get(field)];
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}
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public Map<String,Integer> getDisplayNames(int field, int style, Locale locale) {
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if (field != ERA) {
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return super.getDisplayNames(field, style, locale);
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}
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// Handle Thai BuddhistCalendar specific era names
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if (field < 0 || field >= fields.length ||
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style < ALL_STYLES || style > LONG) {
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throw new IllegalArgumentException();
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}
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if (locale == null) {
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throw new NullPointerException();
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}
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// ALL_STYLES
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if (style == ALL_STYLES) {
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Map<String,Integer> shortNames = getDisplayNamesImpl(field, SHORT, locale);
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Map<String,Integer> longNames = getDisplayNamesImpl(field, LONG, locale);
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if (shortNames == null) {
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return longNames;
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}
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if (longNames != null) {
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shortNames.putAll(longNames);
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}
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return shortNames;
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}
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// SHORT or LONG
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return getDisplayNamesImpl(field, style, locale);
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}
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private Map<String,Integer> getDisplayNamesImpl(int field, int style, Locale locale) {
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ResourceBundle rb = LocaleData.getDateFormatData(locale);
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String[] eras = rb.getStringArray(getKey(style));
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Map<String,Integer> map = new HashMap<String,Integer>(4);
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for (int i = 0; i < eras.length; i++) {
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map.put(eras[i], i);
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}
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return map;
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}
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private String getKey(int style) {
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StringBuilder key = new StringBuilder();
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key.append(BuddhistCalendar.class.getName());
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if (style == SHORT) {
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key.append(".short");
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}
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key.append(".Eras");
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return key.toString();
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}
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/**
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* Returns the maximum value that this field could have, given the
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* current date. For example, with the date "Feb 3, 2540" and the
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* <code>DAY_OF_MONTH</code> field, the actual maximum is 28; for
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* "Feb 3, 2539" it is 29.
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*
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* @param field the field to determine the maximum of
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* @return the maximum of the given field for the current date of this Calendar
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*/
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public int getActualMaximum(int field) {
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int savedYearOffset = yearOffset;
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yearOffset = 0;
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try {
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return super.getActualMaximum(field);
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} finally {
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yearOffset = savedYearOffset;
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}
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}
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public String toString() {
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// The super class produces a String with the Gregorian year
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// value (or '?')
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String s = super.toString();
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// If the YEAR field is UNSET, then return the Gregorian string.
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if (!isSet(YEAR)) {
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return s;
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}
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final String yearField = "YEAR=";
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int p = s.indexOf(yearField);
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// If the string doesn't include the year value for some
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// reason, then return the Gregorian string.
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if (p == -1) {
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return s;
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}
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p += yearField.length();
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StringBuilder sb = new StringBuilder(s.substring(0, p));
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// Skip the year number
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while (Character.isDigit(s.charAt(p++)))
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;
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int year = internalGet(YEAR) + buddhistOffset;
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sb.append(year).append(s.substring(p - 1));
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return sb.toString();
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}
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private transient int yearOffset = buddhistOffset;
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}
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