From f66babd8b8368ada3e5aa29cdef1c77291ee4ddd Mon Sep 17 00:00:00 2001 From: Moonchild Date: Sat, 12 Feb 2022 17:47:03 +0000 Subject: Create the Goanna Runtime Environment --- system/network/base/nsIIncrementalDownload.idl | 109 +++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 system/network/base/nsIIncrementalDownload.idl (limited to 'system/network/base/nsIIncrementalDownload.idl') diff --git a/system/network/base/nsIIncrementalDownload.idl b/system/network/base/nsIIncrementalDownload.idl new file mode 100644 index 000000000..3ae363c48 --- /dev/null +++ b/system/network/base/nsIIncrementalDownload.idl @@ -0,0 +1,109 @@ +/* -*- 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 "nsIRequest.idl" + +interface nsIURI; +interface nsIFile; +interface nsIRequestObserver; + +/** + * An incremental download object attempts to fetch a file piecemeal over time + * in an effort to minimize network bandwidth usage. + * + * Canceling a background download does not cause the file on disk to be + * deleted. + */ +[scriptable, uuid(6687823f-56c4-461d-93a1-7f6cb7dfbfba)] +interface nsIIncrementalDownload : nsIRequest +{ + /** + * Initialize the incremental download object. If the destination file + * already exists, then only the remaining portion of the file will be + * fetched. + * + * NOTE: The downloader will create the destination file if it does not + * already exist. It will create the file with the permissions 0600 if + * needed. To affect the permissions of the file, consumers of this + * interface may create an empty file at the specified destination prior to + * starting the incremental download. + * + * NOTE: Since this class may create a temporary file at the specified + * destination, it is advisable for the consumer of this interface to specify + * a file name for the destination that would not tempt the user into + * double-clicking it. For example, it might be wise to append a file + * extension like ".part" to the end of the destination to protect users from + * accidentally running "blah.exe" before it is a complete file. + * + * @param uri + * The URI to fetch. + * @param destination + * The location where the file is to be stored. + * @param chunkSize + * The size of the chunks to fetch. A non-positive value results in + * the default chunk size being used. + * @param intervalInSeconds + * The amount of time to wait between fetching chunks. Pass a + * negative to use the default interval, or 0 to fetch the remaining + * part of the file in one chunk. + */ + void init(in nsIURI uri, in nsIFile destination, in long chunkSize, + in long intervalInSeconds); + + /** + * The URI being fetched. + */ + readonly attribute nsIURI URI; + + /** + * The URI being fetched after any redirects have been followed. This + * attribute is set just prior to calling OnStartRequest on the observer + * passed to the start method. + */ + readonly attribute nsIURI finalURI; + + /** + * The file where the download is being written. + */ + readonly attribute nsIFile destination; + + /** + * The total number of bytes for the requested file. This attribute is set + * just prior to calling OnStartRequest on the observer passed to the start + * method. + * + * This attribute has a value of -1 if the total size is unknown. + */ + readonly attribute long long totalSize; + + /** + * The current number of bytes downloaded so far. This attribute is set just + * prior to calling OnStartRequest on the observer passed to the start + * method. + * + * This attribute has a value of -1 if the current size is unknown. + */ + readonly attribute long long currentSize; + + /** + * Start the incremental download. + * + * @param observer + * An observer to be notified of various events. OnStartRequest is + * called when finalURI and totalSize have been determined or when an + * error occurs. OnStopRequest is called when the file is completely + * downloaded or when an error occurs. If this object implements + * nsIProgressEventSink, then its OnProgress method will be called as + * data is written to the destination file. If this object implements + * nsIInterfaceRequestor, then it will be assigned as the underlying + * channel's notification callbacks, which allows it to provide a + * nsIAuthPrompt implementation if needed by the channel, for example. + * @param ctxt + * User defined object forwarded to the observer's methods. + */ + void start(in nsIRequestObserver observer, + in nsISupports ctxt); +}; -- cgit v1.2.3