1 /*
   2  * Copyright (c) 2013, 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.Calendar.Builder;
  30 import java.util.Locale;
  31 import java.util.Set;
  32 import java.util.TimeZone;
  33 import sun.util.spi.CalendarProvider;
  34 
  35 /**
  36  * Concrete implementation of the  {@link sun.util.spi.CalendarProvider
  37  * CalendarProvider} class for the JRE LocaleProviderAdapter.
  38  *
  39  * @author Naoto Sato
  40  */
  41 public class CalendarProviderImpl extends CalendarProvider implements AvailableLanguageTags {
  42     private final LocaleProviderAdapter.Type type;
  43     private final Set<String> langtags;
  44 
  45     public CalendarProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) {
  46         this.type = type;
  47         this.langtags = langtags;
  48     }
  49 
  50     /**
  51      * Returns an array of all locales for which this locale service provider
  52      * can provide localized objects or names.
  53      *
  54      * @return An array of all locales for which this locale service provider
  55      * can provide localized objects or names.
  56      */
  57     @Override
  58     public Locale[] getAvailableLocales() {
  59         return LocaleProviderAdapter.toLocaleArray(langtags);
  60     }
  61 
  62     @Override
  63     public boolean isSupportedLocale(Locale locale) {
  64         // Support any locales.
  65         return true;
  66     }
  67 
  68     /**
  69      * Returns a new <code>Calendar</code> instance for the
  70      * specified locale.
  71      *
  72      * @param zone the time zone
  73      * @param locale the desired locale
  74      * @exception NullPointerException if <code>locale</code> is null
  75      * @exception IllegalArgumentException if <code>locale</code> isn't
  76      *     one of the locales returned from
  77      *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
  78      *     getAvailableLocales()}.
  79      * @return a <code>Calendar</code> instance.
  80      * @see java.util.Calendar#getInstance(java.util.Locale)
  81      */
  82     @Override
  83     public Calendar getInstance(TimeZone zone, Locale locale) {
  84         return new Calendar.Builder()
  85                      .setLocale(locale)
  86                      .setTimeZone(zone)
  87                      .setInstant(System.currentTimeMillis())
  88                      .build();
  89     }
  90 
  91     @Override
  92     public Set<String> getAvailableLanguageTags() {
  93         return langtags;
  94     }
  95 }