/* -*- 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
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 *
 * 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):
 *
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 * 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"),
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#include "nsISupports.idl"

interface nsIDOMNode;

/**
 * A service used to sort the contents of a XUL widget.
 */
[scriptable, uuid(F29270C8-3BE5-4046-9B57-945A84DFF132)]
interface nsIXULSortService : nsISupports
{
    const unsigned long SORT_COMPARECASE = 0x0001;
    const unsigned long SORT_INTEGER = 0x0100;

    /**
     * Sort the contents of the widget containing <code>aNode</code>
     * using <code>aSortKey</code> as the comparison key, and
     * <code>aSortDirection</code> as the direction.
     *
     * @param aNode A node in the XUL widget whose children are to be sorted.
     * @param aSortKey The value to be used as the comparison key.
     * @param aSortHints One or more hints as to how to sort:
     *
     *   ascending: to sort the contents in ascending order
     *   descending: to sort the contents in descending order
     *   comparecase: perform case sensitive comparisons
     *   integer: treat values as integers, non-integers are compared as strings
     *   twostate: don't allow the natural (unordered state)
     */
    void sort(in nsIDOMNode aNode,
              in AString aSortKey,
              in AString aSortHints);
};

%{C++
nsresult
NS_NewXULSortService(nsIXULSortService **result);
%}
