1 /* 2 * Copyright (c) 1999, 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.text.DateFormat; 29 import java.text.SimpleDateFormat; 30 import java.text.spi.DateFormatProvider; 31 import java.util.Calendar; 32 import java.util.Locale; 33 import java.util.MissingResourceException; 34 import java.util.Set; 35 36 /** 37 * Concrete implementation of the {@link java.text.spi.DateFormatProvider 38 * DateFormatProvider} class for the JRE LocaleProviderAdapter. 39 * 40 * @author Naoto Sato 41 * @author Masayoshi Okutsu 42 */ 43 public class DateFormatProviderImpl extends DateFormatProvider implements AvailableLanguageTags { 44 private final LocaleProviderAdapter.Type type; 45 private final Set<String> langtags; 46 DateFormatProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags)47 public DateFormatProviderImpl(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 getAvailableLocales()60 public Locale[] getAvailableLocales() { 61 return LocaleProviderAdapter.toLocaleArray(langtags); 62 } 63 64 @Override isSupportedLocale(Locale locale)65 public boolean isSupportedLocale(Locale locale) { 66 return LocaleProviderAdapter.isSupportedLocale(locale, type, langtags); 67 } 68 69 /** 70 * Returns a new <code>DateFormat</code> instance which formats time 71 * with the given formatting style for the specified locale. 72 * @param style the given formatting style. Either one of 73 * {@link java.text.DateFormat#SHORT DateFormat.SHORT}, 74 * {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM}, 75 * {@link java.text.DateFormat#LONG DateFormat.LONG}, or 76 * {@link java.text.DateFormat#FULL DateFormat.FULL}. 77 * @param locale the desired locale. 78 * @exception IllegalArgumentException if <code>style</code> is invalid, 79 * or if <code>locale</code> isn't 80 * one of the locales returned from 81 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() 82 * getAvailableLocales()}. 83 * @exception NullPointerException if <code>locale</code> is null 84 * @return a time formatter. 85 * @see java.text.DateFormat#getTimeInstance(int, java.util.Locale) 86 */ 87 @Override getTimeInstance(int style, Locale locale)88 public DateFormat getTimeInstance(int style, Locale locale) { 89 return getInstance(-1, style, locale); 90 } 91 92 /** 93 * Returns a new <code>DateFormat</code> instance which formats date 94 * with the given formatting style for the specified locale. 95 * @param style the given formatting style. Either one of 96 * {@link java.text.DateFormat#SHORT DateFormat.SHORT}, 97 * {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM}, 98 * {@link java.text.DateFormat#LONG DateFormat.LONG}, or 99 * {@link java.text.DateFormat#FULL DateFormat.FULL}. 100 * @param locale the desired locale. 101 * @exception IllegalArgumentException if <code>style</code> is invalid, 102 * or if <code>locale</code> isn't 103 * one of the locales returned from 104 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() 105 * getAvailableLocales()}. 106 * @exception NullPointerException if <code>locale</code> is null 107 * @return a date formatter. 108 * @see java.text.DateFormat#getDateInstance(int, java.util.Locale) 109 */ 110 @Override getDateInstance(int style, Locale locale)111 public DateFormat getDateInstance(int style, Locale locale) { 112 return getInstance(style, -1, locale); 113 } 114 115 /** 116 * Returns a new <code>DateFormat</code> instance which formats date and time 117 * with the given formatting style for the specified locale. 118 * @param dateStyle the given date formatting style. Either one of 119 * {@link java.text.DateFormat#SHORT DateFormat.SHORT}, 120 * {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM}, 121 * {@link java.text.DateFormat#LONG DateFormat.LONG}, or 122 * {@link java.text.DateFormat#FULL DateFormat.FULL}. 123 * @param timeStyle the given time formatting style. Either one of 124 * {@link java.text.DateFormat#SHORT DateFormat.SHORT}, 125 * {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM}, 126 * {@link java.text.DateFormat#LONG DateFormat.LONG}, or 127 * {@link java.text.DateFormat#FULL DateFormat.FULL}. 128 * @param locale the desired locale. 129 * @exception IllegalArgumentException if <code>dateStyle</code> or 130 * <code>timeStyle</code> is invalid, 131 * or if <code>locale</code> isn't 132 * one of the locales returned from 133 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() 134 * getAvailableLocales()}. 135 * @exception NullPointerException if <code>locale</code> is null 136 * @return a date/time formatter. 137 * @see java.text.DateFormat#getDateTimeInstance(int, int, java.util.Locale) 138 */ 139 @Override getDateTimeInstance(int dateStyle, int timeStyle, Locale locale)140 public DateFormat getDateTimeInstance(int dateStyle, int timeStyle, 141 Locale locale) { 142 return getInstance(dateStyle, timeStyle, locale); 143 } 144 getInstance(int dateStyle, int timeStyle, Locale locale)145 private DateFormat getInstance(int dateStyle, int timeStyle, Locale locale) { 146 if (locale == null) { 147 throw new NullPointerException(); 148 } 149 150 SimpleDateFormat sdf = new SimpleDateFormat("", locale); 151 Calendar cal = sdf.getCalendar(); 152 try { 153 String pattern = LocaleProviderAdapter.forType(type) 154 .getLocaleResources(locale).getDateTimePattern(timeStyle, dateStyle, 155 cal); 156 sdf.applyPattern(pattern); 157 } catch (MissingResourceException mre) { 158 // Specify the fallback pattern 159 sdf.applyPattern("M/d/yy h:mm a"); 160 } 161 162 return sdf; 163 } 164 165 @Override getAvailableLanguageTags()166 public Set<String> getAvailableLanguageTags() { 167 return langtags; 168 } 169 } 170