/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Netscape 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/NPL/
 *
 * 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): 
 */

/* this interface is basically for the old ListNewsGroupState class
 * (the implementation of this class probably wants to also implement
 * or contain ChangeListener so that it can react to OnAnnouncerGoingAway()
 * to destroy the DBView)
 */
#include "nsISupports.idl"

interface nsIMsgNewsFolder;
interface nsINntpUrl;
interface nsIMsgWindow;

[scriptable, uuid(E628ED19-9452-11d2-B7EA-00805F05FFA5)]
interface nsINNTPNewsgroupList : nsISupports {
  
  void initialize(in nsINntpUrl runningURL, in nsIMsgNewsFolder newsFolder);
  
  long getRangeOfArtsToDownload(in nsIMsgWindow aMsgWindow, in long first_message,
                                in long last_message,
                                in long maxextra,
                                out long real_first_message,
                                out long real_last_message);
  
  void addToKnownArticles(in long first_message, in long last_message);


  /* The NNTP module of netlib calls these to feed XOVER data to the message
     library, in response to a news:group.name URL having been opened.
     If MSG_FinishXOVER() returns a message ID, that message will be loaded
     next (used for selecting the first unread message in a group after
     listing that group.)

     depricated:
     The "out" arguments are (if non-NULL) a file descriptor to write the XOVER
     line to, followed by a "\n".  This is used by the XOVER-caching code.
  */
  /* the XOVER Sink should maintain the ListNewsGroupState */
  void initXOVER(in long first_message, in long last_message);  
  void processXOVERLINE(in string line, out unsigned long status);
  void processNonXOVER(in string line);
  void resetXOVER();
  void finishXOVERLINE(in long status, out long newstatus);
  void clearXOVERState();

  attribute boolean getOldMessages;
};