src/java.base/share/classes/java/util/spi/LocaleNameProvider.java
changeset 47216 71c04702a3d5
parent 25859 3317bb8137f4
child 48251 57148c79bd75
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/util/spi/LocaleNameProvider.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.util.spi;
+
+import java.util.Locale;
+
+/**
+ * An abstract class for service providers that
+ * provide localized names for the
+ * {@link java.util.Locale Locale} class.
+ *
+ * @since        1.6
+ */
+public abstract class LocaleNameProvider extends LocaleServiceProvider {
+
+    /**
+     * Sole constructor.  (For invocation by subclass constructors, typically
+     * implicit.)
+     */
+    protected LocaleNameProvider() {
+    }
+
+    /**
+     * Returns a localized name for the given <a href="http://www.rfc-editor.org/rfc/bcp/bcp47.txt">
+     * IETF BCP47</a> language code and the given locale that is appropriate for
+     * display to the user.
+     * For example, if <code>languageCode</code> is "fr" and <code>locale</code>
+     * is en_US, getDisplayLanguage() will return "French"; if <code>languageCode</code>
+     * is "en" and <code>locale</code> is fr_FR, getDisplayLanguage() will return "anglais".
+     * If the name returned cannot be localized according to <code>locale</code>,
+     * (say, the provider does not have a Japanese name for Croatian),
+     * this method returns null.
+     * @param languageCode the language code string in the form of two to eight
+     *     lower-case letters between 'a' (U+0061) and 'z' (U+007A)
+     * @param locale the desired locale
+     * @return the name of the given language code for the specified locale, or null if it's not
+     *     available.
+     * @exception NullPointerException if <code>languageCode</code> or <code>locale</code> is null
+     * @exception IllegalArgumentException if <code>languageCode</code> is not in the form of
+     *     two or three lower-case letters, or <code>locale</code> isn't
+     *     one of the locales returned from
+     *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
+     *     getAvailableLocales()}.
+     * @see java.util.Locale#getDisplayLanguage(java.util.Locale)
+     */
+    public abstract String getDisplayLanguage(String languageCode, Locale locale);
+
+    /**
+     * Returns a localized name for the given <a href="http://www.rfc-editor.org/rfc/bcp/bcp47.txt">
+     * IETF BCP47</a> script code and the given locale that is appropriate for
+     * display to the user.
+     * For example, if <code>scriptCode</code> is "Latn" and <code>locale</code>
+     * is en_US, getDisplayScript() will return "Latin"; if <code>scriptCode</code>
+     * is "Cyrl" and <code>locale</code> is fr_FR, getDisplayScript() will return "cyrillique".
+     * If the name returned cannot be localized according to <code>locale</code>,
+     * (say, the provider does not have a Japanese name for Cyrillic),
+     * this method returns null. The default implementation returns null.
+     * @param scriptCode the four letter script code string in the form of title-case
+     *     letters (the first letter is upper-case character between 'A' (U+0041) and
+     *     'Z' (U+005A) followed by three lower-case character between 'a' (U+0061)
+     *     and 'z' (U+007A)).
+     * @param locale the desired locale
+     * @return the name of the given script code for the specified locale, or null if it's not
+     *     available.
+     * @exception NullPointerException if <code>scriptCode</code> or <code>locale</code> is null
+     * @exception IllegalArgumentException if <code>scriptCode</code> is not in the form of
+     *     four title case letters, or <code>locale</code> isn't
+     *     one of the locales returned from
+     *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
+     *     getAvailableLocales()}.
+     * @see java.util.Locale#getDisplayScript(java.util.Locale)
+     * @since 1.7
+     */
+    public String getDisplayScript(String scriptCode, Locale locale) {
+        return null;
+    }
+
+    /**
+     * Returns a localized name for the given <a href="http://www.rfc-editor.org/rfc/bcp/bcp47.txt">
+     * IETF BCP47</a> region code (either ISO 3166 country code or UN M.49 area
+     * codes) and the given locale that is appropriate for display to the user.
+     * For example, if <code>countryCode</code> is "FR" and <code>locale</code>
+     * is en_US, getDisplayCountry() will return "France"; if <code>countryCode</code>
+     * is "US" and <code>locale</code> is fr_FR, getDisplayCountry() will return "Etats-Unis".
+     * If the name returned cannot be localized according to <code>locale</code>,
+     * (say, the provider does not have a Japanese name for Croatia),
+     * this method returns null.
+     * @param countryCode the country(region) code string in the form of two
+     *     upper-case letters between 'A' (U+0041) and 'Z' (U+005A) or the UN M.49 area code
+     *     in the form of three digit letters between '0' (U+0030) and '9' (U+0039).
+     * @param locale the desired locale
+     * @return the name of the given country code for the specified locale, or null if it's not
+     *     available.
+     * @exception NullPointerException if <code>countryCode</code> or <code>locale</code> is null
+     * @exception IllegalArgumentException if <code>countryCode</code> is not in the form of
+     *     two upper-case letters or three digit letters, or <code>locale</code> isn't
+     *     one of the locales returned from
+     *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
+     *     getAvailableLocales()}.
+     * @see java.util.Locale#getDisplayCountry(java.util.Locale)
+     */
+    public abstract String getDisplayCountry(String countryCode, Locale locale);
+
+    /**
+     * Returns a localized name for the given variant code and the given locale that
+     * is appropriate for display to the user.
+     * If the name returned cannot be localized according to <code>locale</code>,
+     * this method returns null.
+     * @param variant the variant string
+     * @param locale the desired locale
+     * @return the name of the given variant string for the specified locale, or null if it's not
+     *     available.
+     * @exception NullPointerException if <code>variant</code> or <code>locale</code> is null
+     * @exception IllegalArgumentException if <code>locale</code> isn't
+     *     one of the locales returned from
+     *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
+     *     getAvailableLocales()}.
+     * @see java.util.Locale#getDisplayVariant(java.util.Locale)
+     */
+    public abstract String getDisplayVariant(String variant, Locale locale);
+}