diff -r 000000000000 -r 6474c204b198 netwerk/base/public/nsIProgressEventSink.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/base/public/nsIProgressEventSink.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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"
+
+interface nsIURI;
+interface nsIRequest;
+
+/**
+ * nsIProgressEventSink
+ *
+ * This interface is used to asynchronously convey channel status and progress
+ * information that is generally not critical to the processing of the channel.
+ * The information is intended to be displayed to the user in some meaningful
+ * way.
+ *
+ * An implementation of this interface can be passed to a channel via the
+ * channel's notificationCallbacks attribute.  See nsIChannel for more info.
+ *
+ * The channel will begin passing notifications to the progress event sink
+ * after its asyncOpen method has been called.  Notifications will cease once
+ * the channel calls its listener's onStopRequest method or once the channel
+ * is canceled (via nsIRequest::cancel).
+ *
+ * NOTE: This interface is actually not specific to channels and may be used
+ * with other implementations of nsIRequest.
+ */
+[scriptable, uuid(D974C99E-4148-4df9-8D98-DE834A2F6462)]
+interface nsIProgressEventSink : nsISupports
+{
+    /**
+     * Called to notify the event sink that progress has occurred for the
+     * given request.
+     *
+     * @param aRequest
+     *        the request being observed (may QI to nsIChannel).
+     * @param aContext
+     *        if aRequest is a channel, then this parameter is the listener
+     *        context passed to nsIChannel::asyncOpen.
+     * @param aProgress
+     *        numeric value in the range 0 to aProgressMax indicating the
+     *        number of bytes transfered thus far.
+     * @param aProgressMax
+     *        numeric value indicating maximum number of bytes that will be
+     *        transfered (or 0xFFFFFFFFFFFFFFFF if total is unknown).
+     */
+    void onProgress(in nsIRequest aRequest,
+                    in nsISupports aContext,
+                    in unsigned long long aProgress,
+                    in unsigned long long aProgressMax);
+
+    /**
+     * Called to notify the event sink with a status message for the given
+     * request.
+     *
+     * @param aRequest
+     *        the request being observed (may QI to nsIChannel).
+     * @param aContext
+     *        if aRequest is a channel, then this parameter is the listener
+     *        context passed to nsIChannel::asyncOpen.
+     * @param aStatus
+     *        status code (not necessarily an error code) indicating the
+     *        state of the channel (usually the state of the underlying
+     *        transport).  see nsISocketTransport for socket specific status
+     *        codes.
+     * @param aStatusArg
+     *        status code argument to be used with the string bundle service
+     *        to convert the status message into localized, human readable
+     *        text.  the meaning of this parameter is specific to the value
+     *        of the status code.  for socket status codes, this parameter
+     *        indicates the host:port associated with the status code.
+     */
+    void onStatus(in nsIRequest aRequest,
+                  in nsISupports aContext,
+                  in nsresult aStatus,
+                  in wstring aStatusArg);
+
+};