/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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#include "nsISupports.idl"
#include "nsILocale.idl"

/**
 * The Locale service interface. This is a singleton object, and should be
 * obtained from the <tt>nsServiceManager</tt>.
 */
[scriptable, uuid(c2edc848-4219-4440-abbf-98119882c83f)]
interface nsILocaleService : nsISupports
{
    /**
     * Create a new nsILocale from a locale string.
     *
     * @param aLocale
     *        A locale code as described in nsILocale.
     * @return A nsILocale representing the given locale.
     */
    nsILocale newLocale(in AString aLocale);

    /**
     * Get the user preference for locale from the operating system.
     *
     * @return User's OS setting for preferred locale.
     */
    nsILocale getSystemLocale();

    /**
     * Get the user preference for locale from the operating system.
     * 
     * NOTE: This has nothing to do with the locale used for localization of
     * the application (UI text strings etc.). This method returns something
     * similar to getSystemLocale.
     *
     * @return User's OS setting for preferred locale.
     */
    nsILocale getApplicationLocale();

    /**
     * Get the most preferred locale from a list of locale preferences.
     *
     * @param acceptLanguage
     *        Locale preference in the same format as the Accept-Language HTTP
     *        header.
     * @return The most preferred locale according to the acceptLanguage
     *         parameter.
     */
    nsILocale getLocaleFromAcceptLanguage(in string acceptLanguage);

    /**
     * Get the user preference for locale from the operating system.
     *
     * NOTE: This has nothing to do with any HTTP User-Agent. This method
     * returns the same as getSystemLocale, but as a string.
     *
     * @return User's OS setting for preferred locale in the format described
     *         in nsILocale.
     */
    AString getLocaleComponentForUserAgent();
};

%{C++

// {C8E518C1-47AE-11d3-91CD-00105AA3F7DC}
#define NS_LOCALESERVICE_CID {0xc8e518c1,0x47ae,0x11d3,{0x91,0xcd,0x0,0x10,0x5a,0xa3,0xf7,0xdc}}
#define NS_LOCALESERVICE_CONTRACTID "@mozilla.org/intl/nslocaleservice;1"

extern nsresult
NS_NewLocaleService(nsILocaleService** result);

%}