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.MissingResourceException; 30 import java.util.Set; 31 import java.util.TimeZone; 32 import java.util.spi.TimeZoneNameProvider; 33 import sun.util.resources.OpenListResourceBundle; 34 35 /** 36 * Concrete implementation of the 37 * {@link java.util.spi.TimeZoneNameProvider TimeZoneNameProvider} class 38 * for the JRE LocaleProviderAdapter. 39 * 40 * @author Naoto Sato 41 * @author Masayoshi Okutsu 42 */ 43 public class TimeZoneNameProviderImpl extends TimeZoneNameProvider { 44 private final LocaleProviderAdapter.Type type; 45 private final Set<String> langtags; 46 47 TimeZoneNameProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) { 48 this.type = type; 49 this.langtags = langtags; 50 } 51 52 /** 53 * Returns an array of all locales for which this locale service provider 54 * can provide localized objects or names. 55 * 56 * @return An array of all locales for which this locale service provider 57 * can provide localized objects or names. 58 */ 59 @Override 60 public Locale[] getAvailableLocales() { 61 return LocaleProviderAdapter.toLocaleArray(langtags); 62 } 63 64 @Override 65 public boolean isSupportedLocale(Locale locale) { 66 return LocaleProviderAdapter.isSupportedLocale(locale, type, langtags); 67 } 68 69 /** 70 * Returns a name for the given time zone ID that's suitable for 71 * presentation to the user in the specified locale. The given time 72 * zone ID is "GMT" or one of the names defined using "Zone" entries 73 * in the "tz database", a public domain time zone database at 74 * <a href="ftp://elsie.nci.nih.gov/pub/">ftp://elsie.nci.nih.gov/pub/</a>. 75 * The data of this database is contained in a file whose name starts with 76 * "tzdata", and the specification of the data format is part of the zic.8 77 * man page, which is contained in a file whose name starts with "tzcode". 78 * <p> 79 * If <code>daylight</code> is true, the method should return a name 80 * appropriate for daylight saving time even if the specified time zone 81 * has not observed daylight saving time in the past. 82 * 83 * @param ID a time zone ID string 84 * @param daylight if true, return the daylight saving name. 85 * @param style either {@link java.util.TimeZone#LONG TimeZone.LONG} or 86 * {@link java.util.TimeZone#SHORT TimeZone.SHORT} 87 * @param locale the desired locale 88 * @return the human-readable name of the given time zone in the 89 * given locale, or null if it's not available. 90 * @exception IllegalArgumentException if <code>style</code> is invalid, 91 * or <code>locale</code> isn't one of the locales returned from 92 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() 93 * getAvailableLocales()}. 94 * @exception NullPointerException if <code>ID</code> or <code>locale</code> 95 * is null 96 * @see java.util.TimeZone#getDisplayName(boolean, int, java.util.Locale) 97 */ 98 @Override 99 public String getDisplayName(String id, boolean daylight, int style, Locale locale) { 100 if (id == null || locale == null) { 101 throw new NullPointerException(); 102 } 103 104 LocaleProviderAdapter adapter = LocaleProviderAdapter.forType(type); 105 OpenListResourceBundle rb = adapter.getLocaleResources(locale).getTimeZoneNames(); 106 LocaleServiceProviderPool pool = 107 LocaleServiceProviderPool.getPool(TimeZoneNameProvider.class); 108 try { 109 if (!pool.hasProviders() || 110 (rb.getLocale().equals(locale) && rb.handleGetKeys().contains(id))) { 111 String[] names = rb.getStringArray(id); 112 int index = daylight ? 3 : 1; 113 if (style == TimeZone.SHORT) { 114 index++; 115 } 116 return names[index]; 117 } 118 } catch (MissingResourceException mre) { 119 } 120 121 return null; 122 } 123 }