1 /* 2 * Copyright (c) 2012, 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.Locale; 29 import java.util.ResourceBundle; 30 import java.util.Set; 31 import java.util.TimeZone; 32 import java.util.spi.TimeZoneNameProvider; 33 34 /** 35 * Concrete implementation of the 36 * {@link java.util.spi.TimeZoneNameProvider TimeZoneNameProvider} class 37 * for the JRE LocaleProviderAdapter. 38 * 39 * @author Naoto Sato 40 * @author Masayoshi Okutsu 41 */ 42 public class TimeZoneNameProviderImpl extends TimeZoneNameProvider { 43 private final LocaleProviderAdapter.Type type; 44 private final Set<String> langtags; 45 46 TimeZoneNameProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) { 47 this.type = type; 48 this.langtags = langtags; 49 } 50 51 /** 52 * Returns an array of all locales for which this locale service provider 53 * can provide localized objects or names. 54 * 55 * @return An array of all locales for which this locale service provider 56 * can provide localized objects or names. 57 */ 58 @Override 59 public Locale[] getAvailableLocales() { 60 return LocaleProviderAdapter.toLocaleArray(langtags); 61 } 62 63 @Override 64 public boolean isSupportedLocale(Locale locale) { 65 return LocaleProviderAdapter.isSupportedLocale(locale, type, langtags); 66 } 67 68 /** 69 * Returns a name for the given time zone ID that's suitable for 70 * presentation to the user in the specified locale. The given time 71 * zone ID is "GMT" or one of the names defined using "Zone" entries 72 * in the "tz database", a public domain time zone database at 73 * <a href="ftp://elsie.nci.nih.gov/pub/">ftp://elsie.nci.nih.gov/pub/</a>. 74 * The data of this database is contained in a file whose name starts with 75 * "tzdata", and the specification of the data format is part of the zic.8 76 * man page, which is contained in a file whose name starts with "tzcode". 77 * <p> 78 * If <code>daylight</code> is true, the method should return a name 79 * appropriate for daylight saving time even if the specified time zone 80 * has not observed daylight saving time in the past. 81 * 82 * @param ID a time zone ID string 83 * @param daylight if true, return the daylight saving name. 84 * @param style either {@link java.util.TimeZone#LONG TimeZone.LONG} or 85 * {@link java.util.TimeZone#SHORT TimeZone.SHORT} 86 * @param locale the desired locale 87 * @return the human-readable name of the given time zone in the 88 * given locale, or null if it's not available. 89 * @exception IllegalArgumentException if <code>style</code> is invalid, 90 * or <code>locale</code> isn't one of the locales returned from 91 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() 92 * getAvailableLocales()}. 93 * @exception NullPointerException if <code>ID</code> or <code>locale</code> 94 * is null 95 * @see java.util.TimeZone#getDisplayName(boolean, int, java.util.Locale) 96 */ 97 @Override 98 public String getDisplayName(String id, boolean daylight, int style, Locale locale) { 99 if (id == null || locale == null) { 100 throw new NullPointerException(); 101 } 102 103 LocaleProviderAdapter adapter = LocaleProviderAdapter.forType(type); 104 ResourceBundle rb = adapter.getLocaleResources(locale).getTimeZoneNames(); 105 if (rb.containsKey(id)) { 106 String[] names = rb.getStringArray(id); 107 int index = daylight ? 3 : 1; 108 if (style == TimeZone.SHORT) { 109 index++; 110 } 111 return names[index]; 112 } 113 114 return null; 115 } 116 }