1 /* 2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.util.locale.provider; 27 28 import java.util.Calendar; 29 import java.util.Locale; 30 import java.util.Set; 31 import java.util.TimeZone; 32 import sun.util.spi.CalendarProvider; 33 34 /** 35 * Concrete implementation of the {@link sun.util.spi.CalendarProvider 36 * CalendarProvider} class for the JRE LocaleProviderAdapter. 37 * 38 * @author Naoto Sato 39 */ 40 public class CalendarProviderImpl extends CalendarProvider implements AvailableLanguageTags { 41 private final LocaleProviderAdapter.Type type; 42 private Set<String> langtags; 43 44 public CalendarProviderImpl(LocaleProviderAdapter.Type type) { 45 this.type = type; 46 } 47 48 /** 49 * Returns an array of all locales for which this locale service provider 50 * can provide localized objects or names. 51 * 52 * @return An array of all locales for which this locale service provider 53 * can provide localized objects or names. 54 */ 55 @Override 56 public Locale[] getAvailableLocales() { 57 return LocaleProviderAdapter.toLocaleArray(getLangTags()); 58 } 59 60 @Override 61 public boolean isSupportedLocale(Locale locale) { 62 // Support any locales. 63 return true; 64 } 65 66 /** 67 * Returns a new <code>Calendar</code> instance for the 68 * specified locale. 69 * 70 * @param zone the time zone 71 * @param locale the desired locale 72 * @exception NullPointerException if <code>locale</code> is null 73 * @exception IllegalArgumentException if <code>locale</code> isn't 74 * one of the locales returned from 75 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() 76 * getAvailableLocales()}. 77 * @return a <code>Calendar</code> instance. 78 * @see java.util.Calendar#getInstance(java.util.Locale) 79 */ 80 @Override 81 public Calendar getInstance(TimeZone zone, Locale locale) { 82 return new Calendar.Builder() 83 .setLocale(locale) 84 .setTimeZone(zone) 85 .setInstant(System.currentTimeMillis()) 86 .build(); 87 } 88 89 @Override 90 public Set<String> getAvailableLanguageTags() { 91 return getLangTags(); 92 } 93 94 private Set<String> getLangTags() { 95 if (langtags == null) { 96 langtags = ((JRELocaleProviderAdapter)LocaleProviderAdapter.forType(type)).getLanguageTagSet("CalendarData"); 97 } 98 return langtags; 99 } 100 }