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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

/**
 * This interface provides a means to cancel an operation that is in progress.
 */
[scriptable, uuid(d94ac0a0-bb18-46b8-844e-84159064b0bd)]
interface nsICancelable : nsISupports
{
  /**
   * Call this method to request that this object abort whatever operation it
   * may be performing.
   *
   * @param aReason
   *        Pass a failure code to indicate the reason why this operation is
   *        being canceled.  It is an error to pass a success code.
   */
  void cancel(in nsresult aReason);
};