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/* -*- 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
 * 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 the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Blake Ross <blaker@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * 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"),
 * 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 "nsIWebProgressListener2.idl"

interface nsIURI;
interface nsICancelable;
interface nsIMIMEInfo;
interface nsILocalFile;

[scriptable, uuid(23c51569-e9a1-4a92-adeb-3723db82ef7c)]
interface nsITransfer : nsIWebProgressListener2 {

    /**
     * Initializes the transfer with certain properties.  This function must
     * be called prior to accessing any properties on this interface.
     *
     * @param aSource The source URI of the transfer. Must not be null.
     *
     * @param aTarget The target URI of the transfer. Must not be null.
     *
     * @param aDisplayName The user-readable description of the transfer.
     *                     Can be empty.
     *
     * @param aMIMEInfo The MIME info associated with the target,
     *                  including MIME type and helper app when appropriate.
     *                  This parameter is optional.
     *
     * @param startTime Time when the download started (ie, when the first
     *                  response from the server was received)
     *                  XXX presumably wbp and exthandler do this differently
     *
     * @param aTempFile The location of a temporary file; i.e. a file in which
     *                  the received data will be stored, but which is not
     *                  equal to the target file. (will be moved to the real
     *                  target by the caller, when the download is finished)
     *                  May be null.
     *
     * @param aCancelable An object that can be used to abort the download.
     *                    Must not be null.
     *                    Implementations are expected to hold a strong
     *                    reference to this object until the download is
     *                    finished, at which point they should release the
     *                    reference.
     */
    void init(in nsIURI aSource,
              in nsIURI aTarget,
              in AString aDisplayName,
              in nsIMIMEInfo aMIMEInfo,
              in PRTime startTime,
              in nsILocalFile aTempFile,
              in nsICancelable aCancelable);
};

%{C++
/**
 * A component with this contract ID will be created each time a download is
 * started, and nsITransfer::Init will be called on it and an observer will be set.
 *
 * Notifications of the download progress will happen via
 * nsIWebProgressListener/nsIWebProgressListener2.
 *
 * INTERFACES THAT MUST BE IMPLEMENTED:
 *   nsITransfer
 *   nsIWebProgressListener
 *   nsIWebProgressListener2
 *
 * XXX move this to nsEmbedCID.h once the interfaces (and the contract ID) are
 * frozen.
 */
#define NS_TRANSFER_CONTRACTID "@mozilla.org/transfer;1"
%}