1 /*
2 * Copyright (c) 2012, 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.Locale;
29 import java.util.Set;
30 import java.util.spi.CurrencyNameProvider;
31
32 /**
33 * Concrete implementation of the
34 * {@link java.util.spi.CurrencyNameProvider CurrencyNameProvider} class
35 * for the JRE LocaleProviderAdapter.
36 *
37 * @author Naoto Sato
38 * @author Masayoshi Okutsu
39 */
40 public class CurrencyNameProviderImpl extends CurrencyNameProvider
41 implements AvailableLanguageTags {
42 private final LocaleProviderAdapter.Type type;
43 private final Set<String> langtags;
44
45 public CurrencyNameProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) {
46 this.type = type;
47 this.langtags = langtags;
48 }
49
50 @Override
51 public Set<String> getAvailableLanguageTags() {
52 return langtags;
53 }
54
55 /**
56 * Returns an array of all locales for which this locale service provider
57 * can provide localized objects or names.
58 *
59 * @return An array of all locales for which this locale service provider
60 * can provide localized objects or names.
61 */
62 @Override
63 public Locale[] getAvailableLocales() {
64 return LocaleProviderAdapter.toLocaleArray(langtags);
65 }
66
67 /**
68 * Gets the symbol of the given currency code for the specified locale.
69 * For example, for "USD" (US Dollar), the symbol is "$" if the specified
70 * locale is the US, while for other locales it may be "US$". If no
71 * symbol can be determined, null should be returned.
72 *
73 * @param currencyCode the ISO 4217 currency code, which
74 * consists of three upper-case letters between 'A' (U+0041) and
75 * 'Z' (U+005A)
76 * @param locale the desired locale
77 * @return the symbol of the given currency code for the specified locale, or null if
78 * the symbol is not available for the locale
79 * @exception NullPointerException if <code>currencyCode</code> or
80 * <code>locale</code> is null
81 * @exception IllegalArgumentException if <code>currencyCode</code> is not in
82 * the form of three upper-case letters, or <code>locale</code> isn't
83 * one of the locales returned from
84 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
85 * getAvailableLocales()}.
86 * @see java.util.Currency#getSymbol(java.util.Locale)
87 */
88 @Override
89 public String getSymbol(String currencyCode, Locale locale) {
90 return getString(currencyCode.toUpperCase(Locale.ROOT), locale);
91 }
92
93 /**
94 * Returns a name for the currency that is appropriate for display to the
95 * user. The default implementation returns null.
96 *
97 * @param currencyCode the ISO 4217 currency code, which
98 * consists of three upper-case letters between 'A' (U+0041) and
99 * 'Z' (U+005A)
100 * @param locale the desired locale
101 * @return the name for the currency that is appropriate for display to the
102 * user, or null if the name is not available for the locale
103 * @exception IllegalArgumentException if <code>currencyCode</code> is not in
104 * the form of three upper-case letters, or <code>locale</code> isn't
105 * one of the locales returned from
106 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
107 * getAvailableLocales()}.
108 * @exception NullPointerException if <code>currencyCode</code> or
109 * <code>locale</code> is <code>null</code>
110 * @since 1.7
111 */
112 @Override
113 public String getDisplayName(String currencyCode, Locale locale) {
114 return getString(currencyCode.toLowerCase(Locale.ROOT), locale);
115 }
116
117 private String getString(String key, Locale locale) {
118 if (locale == null) {
119 throw new NullPointerException();
120 }
121
122 return LocaleProviderAdapter.forType(type).getLocaleResources(locale).getCurrencyName(key);
123 }
124 }