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 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape Public License
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 *
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 * 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 
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 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *
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 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#include "nsISupports.idl"

interface nsIURI;
interface nsIRequest;

/**
 * An instance of nsIFfpEventSink should be passed as the eventSink
 * argument of nsINetService::NewConnection for ftp URLs. It defines
 * the callbacks to the application program (the html parser).
 */
[scriptable, uuid(dd47ee00-18c2-11d3-9337-00104ba0fd40)]
interface nsIProgressEventSink : nsISupports
{
    /**
     * Notify the EventSink that progress has occurred for the URL load.<BR>
     */
    void onProgress(in nsIRequest request,
                    in nsISupports ctxt,
                    in unsigned long aProgress,
                    in unsigned long aProgressMax);

    /**
     * Notify the EventSink with a status message for the URL load.<BR>
     * @param status - A status code denoting the type of notification. This
     *          can be a message to be displayed (e.g. for file I/O, 
     *          STATUS_READ_FROM, or STATUS_WROTE_TO), or can be an event
     *          to be programmatically handled.
     * @param statusArg - An argument or arguments to the status notification.
     *          These arguments will be formatted into any status or error
     *          message. Multiple arguments can be passed by delimiting them 
     *          with newline ('\n') characters.
     */
    void onStatus(in nsIRequest request,
                  in nsISupports ctxt,
                  in nsresult status,
                  in wstring statusArg);

};