/* ***** 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 the Mozilla XPInstall.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *      Daniel Veditz <dveditz@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"

/**
 * Interface to display XPInstall download and install status.
 *
 * @status UNDER_REVIEW
 */
[scriptable, uuid(8cdf1192-8709-4428-ab97-c5b6ceecd7e9)]
interface nsIXPIProgressDialog : nsISupports
{
    /**
     * state values for onStateChange
     */
    const short DOWNLOAD_START       = 0;
    const short DOWNLOAD_DONE        = 1;
    const short INSTALL_START        = 2;
    const short INSTALL_DONE         = 3;
    const short DIALOG_CLOSE         = 4;

    /**
     * basic info to control the install progress dialog. The dialog can
     * go away any time after it has received the DIALOG_CLOSE state message
     * but needs to accept messages until that time even if it is not visible.
     *
     * Normally for each install package the dialog will receive the download
     * and install messages in START/DONE pairs, but in the case of a download
     * error the dialog will be sent only the DOWNLOAD_START followed by an
     * INSTALL_DONE message with the value nsInstall::DOWNLOAD_ERROR
     *
     * @param index     the package this message is about of those passed into
     *                  openProgressDialog. ignored when state==DIALOG_CLOSE
     * @param state     the kind of message
     * @param value     final result when state==INSTALL_DONE, otherwise ignored
     */
    void onStateChange( in unsigned long index, in short state, in long value );

    /**
     * download progress
     *
     * @param index     the package to which this refers
     * @param value     number of bytes downloaded
     * @param maxValue  the total size
     */
    void onProgress( in unsigned long index, in unsigned long value, in unsigned long maxValue );
};
