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ipcITransactionObserver.idl

/* ***** 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 Transaction Manager.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corp.
 * Portions created by the Initial Developer are Copyright (C) 2003
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   John Gaunt <jgaunt@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either 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
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsISupports.idl"

[scriptable, uuid(656c0a6a-5cb3-45ec-8cb6-e7678897f937)]
interface ipcITransactionObserver : nsISupports
{
  /**
    * This gets called when a Transaction has been sent from the 
    *   TransactionManager. If the data passed in needs to be stored
    *   for longer than the life of the method the observer needs
    *   to make a copy.
    *
    * @param aQueueID
    *        The queue from which the transaction originated
    *
    * @param aData
    *        The data to be sent.
    *
    * @param aDataLen
    *        The length of the data argument
    */
  void onTransactionAvailable(in unsigned long aQueueID,
                              [array, const, size_is(aDataLen)]
                              in octet aData,
                              in unsigned long aDataLen);

  /**
    * Called after an application sends an Attach message to the
    *   Transaction Manager.
    *
    * @param aQueueID
    *        The client has been attached to the queue with this ID
    *
    * @param aStatus
    *        The status of the operation, as defined in tmUtils.h
    */
  void onAttachReply(in unsigned long aQueueID, in unsigned long aStatus);

  /**
    * Called after an application sends a Detach message. Indicates 
    *   to the client that no more messages will be coming from the
    *   the TM to this client. Also, no messages posted from this
    *   client to the indicated queue will be accepted.
    *
    * @param aQueueID
    *        The client has been detached from the queue with this ID
    *
    * @param aStatus
    *        The status of the operation, as defined in tmUtils.h
    */
  void onDetachReply(in unsigned long aQueueID, in unsigned long aStatus);

  /**
    * The reply from the TM indicating all messages have been removed
    *   from the queue indicated.
    *
    * @param aQueueID
    *        The queue that has been flushed.
    *
    * @param aStatus
    *        The status of the operation, as defined in tmUtils.h
    */
  void onFlushReply(in unsigned long aQueueID, in unsigned long aStatus);
};

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