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.ResourceBundle; 31 import java.util.Set; 32 import java.util.spi.CurrencyNameProvider; 33 34 /** 35 * Concrete implementation of the 36 * {@link java.util.spi.CurrencyNameProvider CurrencyNameProvider} class 37 * for the JRE LocaleProviderAdapter. 38 * 39 * @author Naoto Sato 40 * @author Masayoshi Okutsu 41 */ 42 public class CurrencyNameProviderImpl extends CurrencyNameProvider 43 implements AvailableLanguageTags { 44 private final LocaleProviderAdapter.Type type; 45 private final Set<String> langtags; 46 47 public CurrencyNameProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) { 48 this.type = type; 49 this.langtags = langtags; 50 } 51 52 @Override 53 public Set<String> getAvailableLanguageTags() { 54 return langtags; 55 } 56 57 /** 58 * Returns an array of all locales for which this locale service provider 59 * can provide localized objects or names. 60 * 61 * @return An array of all locales for which this locale service provider 62 * can provide localized objects or names. 63 */ 64 @Override 65 public Locale[] getAvailableLocales() { 66 return LocaleProviderAdapter.toLocaleArray(langtags); 67 } 68 69 /** 70 * Gets the symbol of the given currency code for the specified locale. 71 * For example, for "USD" (US Dollar), the symbol is "$" if the specified 72 * locale is the US, while for other locales it may be "US$". If no 73 * symbol can be determined, null should be returned. 74 * 75 * @param currencyCode the ISO 4217 currency code, which 76 * consists of three upper-case letters between 'A' (U+0041) and 77 * 'Z' (U+005A) 78 * @param locale the desired locale 79 * @return the symbol of the given currency code for the specified locale, or null if 80 * the symbol is not available for the locale 81 * @exception NullPointerException if <code>currencyCode</code> or 82 * <code>locale</code> is null 83 * @exception IllegalArgumentException if <code>currencyCode</code> is not in 84 * the form of three upper-case letters, or <code>locale</code> isn't 85 * one of the locales returned from 86 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() 87 * getAvailableLocales()}. 88 * @see java.util.Currency#getSymbol(java.util.Locale) 89 */ 90 @Override 91 public String getSymbol(String currencyCode, Locale locale) { 92 return getString(currencyCode.toUpperCase(Locale.ROOT), locale); 93 } 94 95 /** 96 * Returns a name for the currency that is appropriate for display to the 97 * user. The default implementation returns null. 98 * 99 * @param currencyCode the ISO 4217 currency code, which 100 * consists of three upper-case letters between 'A' (U+0041) and 101 * 'Z' (U+005A) 102 * @param locale the desired locale 103 * @return the name for the currency that is appropriate for display to the 104 * user, or null if the name is not available for the locale 105 * @exception IllegalArgumentException if <code>currencyCode</code> is not in 106 * the form of three upper-case letters, or <code>locale</code> isn't 107 * one of the locales returned from 108 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() 109 * getAvailableLocales()}. 110 * @exception NullPointerException if <code>currencyCode</code> or 111 * <code>locale</code> is <code>null</code> 112 * @since 1.7 113 */ 114 @Override 115 public String getDisplayName(String currencyCode, Locale locale) { 116 return getString(currencyCode.toLowerCase(Locale.ROOT), locale); 117 } 118 119 private String getString(String key, Locale locale) { 120 if (locale == null) { 121 throw new NullPointerException(); 122 } 123 124 ResourceBundle bundle = LocaleProviderAdapter.forType(type).getLocaleData().getCurrencyNames(locale); 125 try { 126 if (bundle.containsKey(key)) { 127 return bundle.getString(key); 128 } 129 } catch (MissingResourceException mre) {} 130 131 return null; 132 } 133 }