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