/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * 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 Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s):
 *   Javier Delgadillo <javi@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL"), in which case the provisions of the GPL are applicable
 * instead of those above.  If you wish to allow use of your
 * version of this file only under the terms of the GPL and not to
 * allow others to use your version of this file under the MPL,
 * indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by
 * the GPL.  If you do not delete the provisions above, a recipient
 * may use your version of this file under either the MPL or the
 * GPL.
 */

#include "nsISupports.idl"
#include "nsIASN1Object.idl"

interface nsIMutableArray;

/**
 * This represents a sequence of ASN.1 objects,
 * where ASN.1 is "Abstract Syntax Notation number One".
 *
 * Overview of how this ASN1 interface is intended to
 * work.
 *
 * First off, the nsIASN1Sequence is any type in ASN1
 * that consists of sub-elements (ie SEQUENCE, SET)
 * nsIASN1Printable Items are all the other types that
 * can be viewed by themselves without interpreting further.
 * Examples would include INTEGER, UTF-8 STRING, OID.
 * These are not intended to directly reflect the numberous
 * types that exist in ASN1, but merely an interface to ease
 * producing a tree display the ASN1 structure of any DER
 * object.
 *
 * The additional state information carried in this interface
 * makes it fit for being used as the data structure
 * when working with visual reprenstation of ASN.1 objects
 * in a human user interface, like in a tree widget
 * where open/close state of nodes must be remembered.
 *
 * @status FROZEN
 */
[scriptable, uuid(b6b957e6-1dd1-11b2-89d7-e30624f50b00)]
interface nsIASN1Sequence : nsIASN1Object {

  /**
   *  The array of objects stored in the sequence.
   */
  attribute nsIMutableArray ASN1Objects;

  /**
   *  Whether the node at this position in the ASN.1 data structure
   *  sequence contains sub elements understood by the
   *  application.
   */
  attribute boolean isValidContainer;

  /**
   *  Whether the contained objects should be shown or hidden.
   *  A UI implementation can use this flag to store the current
   *  expansion state when shown in a tree widget.
   */
  attribute boolean isExpanded;
};
