forked from mirrors/gecko-dev
6b518d3722
This removes subscribe UI and functionality from the main browser window, the page info window, and from feed previews. It may leave some stray strings in subscribe.properties/dtd, which will be removed in bug 1477669 when the preview code goes away completely. Differential Revision: https://phabricator.services.mozilla.com/D5982 --HG-- extra : moz-landing-system : lando
415 lines
13 KiB
JavaScript
415 lines
13 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
|
|
/* 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/. */
|
|
|
|
ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
|
|
ChromeUtils.import("resource://gre/modules/Services.jsm");
|
|
|
|
function LOG(str) {
|
|
dump("*** " + str + "\n");
|
|
}
|
|
|
|
const FS_CONTRACTID = "@mozilla.org/browser/feeds/result-service;1";
|
|
const FPH_CONTRACTID = "@mozilla.org/network/protocol;1?name=feed";
|
|
const PCPH_CONTRACTID = "@mozilla.org/network/protocol;1?name=pcast";
|
|
|
|
const TYPE_MAYBE_FEED = "application/vnd.mozilla.maybe.feed";
|
|
const TYPE_MAYBE_VIDEO_FEED = "application/vnd.mozilla.maybe.video.feed";
|
|
const TYPE_MAYBE_AUDIO_FEED = "application/vnd.mozilla.maybe.audio.feed";
|
|
const TYPE_ANY = "*/*";
|
|
|
|
const PREF_SELECTED_APP = "browser.feeds.handlers.application";
|
|
const PREF_SELECTED_ACTION = "browser.feeds.handler";
|
|
const PREF_SELECTED_READER = "browser.feeds.handler.default";
|
|
|
|
const PREF_VIDEO_SELECTED_APP = "browser.videoFeeds.handlers.application";
|
|
const PREF_VIDEO_SELECTED_ACTION = "browser.videoFeeds.handler";
|
|
const PREF_VIDEO_SELECTED_READER = "browser.videoFeeds.handler.default";
|
|
|
|
const PREF_AUDIO_SELECTED_APP = "browser.audioFeeds.handlers.application";
|
|
const PREF_AUDIO_SELECTED_ACTION = "browser.audioFeeds.handler";
|
|
const PREF_AUDIO_SELECTED_READER = "browser.audioFeeds.handler.default";
|
|
|
|
function getPrefAppForType(t) {
|
|
switch (t) {
|
|
case Ci.nsIFeed.TYPE_VIDEO:
|
|
return PREF_VIDEO_SELECTED_APP;
|
|
|
|
case Ci.nsIFeed.TYPE_AUDIO:
|
|
return PREF_AUDIO_SELECTED_APP;
|
|
|
|
default:
|
|
return PREF_SELECTED_APP;
|
|
}
|
|
}
|
|
|
|
function getPrefActionForType(t) {
|
|
switch (t) {
|
|
case Ci.nsIFeed.TYPE_VIDEO:
|
|
return PREF_VIDEO_SELECTED_ACTION;
|
|
|
|
case Ci.nsIFeed.TYPE_AUDIO:
|
|
return PREF_AUDIO_SELECTED_ACTION;
|
|
|
|
default:
|
|
return PREF_SELECTED_ACTION;
|
|
}
|
|
}
|
|
|
|
function getPrefReaderForType(t) {
|
|
switch (t) {
|
|
case Ci.nsIFeed.TYPE_VIDEO:
|
|
return PREF_VIDEO_SELECTED_READER;
|
|
|
|
case Ci.nsIFeed.TYPE_AUDIO:
|
|
return PREF_AUDIO_SELECTED_READER;
|
|
|
|
default:
|
|
return PREF_SELECTED_READER;
|
|
}
|
|
}
|
|
|
|
XPCOMUtils.defineLazyPreferenceGetter(this, "gCanFrameFeeds",
|
|
"browser.feeds.unsafelyFrameFeeds", false);
|
|
|
|
|
|
function FeedConverter() {
|
|
}
|
|
FeedConverter.prototype = {
|
|
classID: Components.ID("{229fa115-9412-4d32-baf3-2fc407f76fb1}"),
|
|
|
|
/**
|
|
* This is the downloaded text data for the feed.
|
|
*/
|
|
_data: null,
|
|
|
|
/**
|
|
* This is the object listening to the conversion, which is ultimately the
|
|
* docshell for the load.
|
|
*/
|
|
_listener: null,
|
|
|
|
/**
|
|
* Records if the feed was sniffed
|
|
*/
|
|
_sniffed: false,
|
|
|
|
/**
|
|
* See nsIStreamConverter.idl
|
|
*/
|
|
convert(sourceStream, sourceType, destinationType,
|
|
context) {
|
|
throw Cr.NS_ERROR_NOT_IMPLEMENTED;
|
|
},
|
|
|
|
/**
|
|
* See nsIStreamConverter.idl
|
|
*/
|
|
asyncConvertData(sourceType, destinationType,
|
|
listener, context) {
|
|
this._listener = listener;
|
|
},
|
|
|
|
/**
|
|
* Whether or not the preview page is being forced.
|
|
*/
|
|
_forcePreviewPage: false,
|
|
|
|
/**
|
|
* Release our references to various things once we're done using them.
|
|
*/
|
|
_releaseHandles() {
|
|
this._listener = null;
|
|
this._request = null;
|
|
this._processor = null;
|
|
},
|
|
|
|
/**
|
|
* See nsIFeedResultListener.idl
|
|
*/
|
|
handleResult(result) {
|
|
// Feeds come in various content types, which our feed sniffer coerces to
|
|
// the maybe.feed type. However, feeds are used as a transport for
|
|
// different data types, e.g. news/blogs (traditional feed), video/audio
|
|
// (podcasts) and photos (photocasts, photostreams). Each of these is
|
|
// different in that there's a different class of application suitable for
|
|
// handling feeds of that type, but without a content-type differentiation
|
|
// it is difficult for us to disambiguate.
|
|
//
|
|
// The other problem is that if the user specifies an auto-action handler
|
|
// for one feed application, the fact that the content type is shared means
|
|
// that all other applications will auto-load with that handler too,
|
|
// regardless of the content-type.
|
|
//
|
|
// This means that content-type alone is not enough to determine whether
|
|
// or not a feed should be auto-handled. This means that for feeds we need
|
|
// to always use this stream converter, even when an auto-action is
|
|
// specified, not the basic one provided by WebContentConverter. This
|
|
// converter needs to consume all of the data and parse it, and based on
|
|
// that determination make a judgment about type.
|
|
//
|
|
// Since there are no content types for this content, and I'm not going to
|
|
// invent any, the upshot is that while a user can set an auto-handler for
|
|
// generic feed content, the system will prevent them from setting an auto-
|
|
// handler for other stream types. In those cases, the user will always see
|
|
// the preview page and have to select a handler. We can guess and show
|
|
// a client handler.
|
|
//
|
|
// If this is just a feed, not some kind of specialized application, then
|
|
// auto-handlers can be set and we should obey them.
|
|
try {
|
|
let feedService =
|
|
Cc["@mozilla.org/browser/feeds/result-service;1"].
|
|
getService(Ci.nsIFeedResultService);
|
|
if (!this._forcePreviewPage && result.doc) {
|
|
let feed = result.doc.QueryInterface(Ci.nsIFeed);
|
|
let handler = Services.prefs.getCharPref(getPrefActionForType(feed.type), "ask");
|
|
|
|
if (handler != "ask") {
|
|
if (handler == "reader")
|
|
handler = Services.prefs.getCharPref(getPrefReaderForType(feed.type), "bookmarks");
|
|
try {
|
|
let title = feed.title ? feed.title.plainText() : "";
|
|
let desc = feed.subtitle ? feed.subtitle.plainText() : "";
|
|
feedService.addToClientReader(result.uri.spec, title, desc, feed.type, handler);
|
|
return;
|
|
} catch (ex) { /* fallback to preview mode */ }
|
|
}
|
|
}
|
|
|
|
let chromeChannel;
|
|
|
|
// handling a redirect, hence forwarding the loadInfo from the old channel
|
|
// to the newchannel.
|
|
let oldChannel = this._request.QueryInterface(Ci.nsIChannel);
|
|
let loadInfo = oldChannel.loadInfo;
|
|
|
|
// If there was no automatic handler, or this was a podcast,
|
|
// photostream or some other kind of application, show the preview page
|
|
// if the parser returned a document.
|
|
if (result.doc) {
|
|
|
|
// Store the result in the result service so that the display
|
|
// page can access it.
|
|
feedService.addFeedResult(result);
|
|
|
|
// Now load the actual XUL document.
|
|
let aboutFeedsURI = Services.io.newURI("about:feeds");
|
|
chromeChannel = Services.io.newChannelFromURIWithLoadInfo(aboutFeedsURI, loadInfo);
|
|
chromeChannel.originalURI = result.uri;
|
|
|
|
// carry the origin attributes from the channel that loaded the feed.
|
|
chromeChannel.owner =
|
|
Services.scriptSecurityManager.createCodebasePrincipal(aboutFeedsURI,
|
|
loadInfo.originAttributes);
|
|
} else {
|
|
chromeChannel = Services.io.newChannelFromURIWithLoadInfo(result.uri, loadInfo);
|
|
}
|
|
|
|
chromeChannel.loadGroup = this._request.loadGroup;
|
|
chromeChannel.asyncOpen2(this._listener);
|
|
} finally {
|
|
this._releaseHandles();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* See nsIStreamListener.idl
|
|
*/
|
|
onDataAvailable(request, context, inputStream,
|
|
sourceOffset, count) {
|
|
if (this._processor)
|
|
this._processor.onDataAvailable(request, context, inputStream,
|
|
sourceOffset, count);
|
|
},
|
|
|
|
/**
|
|
* See nsIRequestObserver.idl
|
|
*/
|
|
onStartRequest(request, context) {
|
|
let channel = request.QueryInterface(Ci.nsIChannel);
|
|
|
|
let {loadInfo} = channel;
|
|
if ((loadInfo.frameOuterWindowID || loadInfo.outerWindowID) != loadInfo.topOuterWindowID &&
|
|
!gCanFrameFeeds) {
|
|
// We don't care about frame loads:
|
|
return;
|
|
}
|
|
|
|
// Check for a header that tells us there was no sniffing
|
|
// The value doesn't matter.
|
|
try {
|
|
let httpChannel = channel.QueryInterface(Ci.nsIHttpChannel);
|
|
// Make sure to check requestSucceeded before the potentially-throwing
|
|
// getResponseHeader.
|
|
if (!httpChannel.requestSucceeded) {
|
|
// Just give up, but don't forget to cancel the channel first!
|
|
request.cancel(Cr.NS_BINDING_ABORTED);
|
|
return;
|
|
}
|
|
|
|
// Note: this throws if the header is not set.
|
|
httpChannel.getResponseHeader("X-Moz-Is-Feed");
|
|
} catch (ex) {
|
|
this._sniffed = true;
|
|
}
|
|
|
|
this._request = request;
|
|
|
|
// Save and reset the forced state bit early, in case there's some kind of
|
|
// error.
|
|
let feedService =
|
|
Cc["@mozilla.org/browser/feeds/result-service;1"].
|
|
getService(Ci.nsIFeedResultService);
|
|
this._forcePreviewPage = feedService.forcePreviewPage;
|
|
feedService.forcePreviewPage = false;
|
|
|
|
// Parse feed data as it comes in
|
|
this._processor =
|
|
Cc["@mozilla.org/feed-processor;1"].
|
|
createInstance(Ci.nsIFeedProcessor);
|
|
this._processor.listener = this;
|
|
this._processor.parseAsync(null, channel.URI);
|
|
|
|
this._processor.onStartRequest(request, context);
|
|
},
|
|
|
|
/**
|
|
* See nsIRequestObserver.idl
|
|
*/
|
|
onStopRequest(request, context, status) {
|
|
if (this._processor)
|
|
this._processor.onStopRequest(request, context, status);
|
|
},
|
|
|
|
/**
|
|
* See nsISupports.idl
|
|
*/
|
|
QueryInterface: ChromeUtils.generateQI(["nsIFeedResultListener",
|
|
"nsIStreamConverter",
|
|
"nsIStreamListener",
|
|
"nsIRequestObserver"]),
|
|
};
|
|
|
|
/**
|
|
* Keeps parsed FeedResults around for use elsewhere in the UI after the stream
|
|
* converter completes.
|
|
*/
|
|
function FeedResultService() {
|
|
}
|
|
|
|
FeedResultService.prototype = {
|
|
classID: Components.ID("{2376201c-bbc6-472f-9b62-7548040a61c6}"),
|
|
|
|
/**
|
|
* A URI spec -> [nsIFeedResult] hash. We have to keep a list as the
|
|
* value in case the same URI is requested concurrently.
|
|
*/
|
|
_results: { },
|
|
|
|
/**
|
|
* See nsIFeedResultService.idl
|
|
*/
|
|
forcePreviewPage: false,
|
|
|
|
/**
|
|
* See nsIFeedResultService.idl
|
|
*/
|
|
addToClientReader(spec, title, subtitle, feedType, feedReader) {
|
|
if (!feedReader) {
|
|
feedReader = "default";
|
|
}
|
|
|
|
let handler = Services.prefs.getCharPref(getPrefActionForType(feedType), "bookmarks");
|
|
if (handler == "ask" || handler == "reader")
|
|
handler = feedReader;
|
|
|
|
switch (handler) {
|
|
case "client":
|
|
Services.cpmm.sendAsyncMessage("FeedConverter:ExecuteClientApp",
|
|
{ spec,
|
|
title,
|
|
subtitle,
|
|
feedHandler: getPrefAppForType(feedType) });
|
|
break;
|
|
case "default":
|
|
// Default system feed reader
|
|
Services.cpmm.sendAsyncMessage("FeedConverter:ExecuteClientApp",
|
|
{ spec,
|
|
title,
|
|
subtitle,
|
|
feedHandler: "default" });
|
|
break;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* See nsIFeedResultService.idl
|
|
*/
|
|
addFeedResult(feedResult) {
|
|
if (feedResult.uri == null)
|
|
throw new Error("null URI!");
|
|
if (feedResult.uri == null)
|
|
throw new Error("null feedResult!");
|
|
let spec = feedResult.uri.spec;
|
|
if (!this._results[spec])
|
|
this._results[spec] = [];
|
|
this._results[spec].push(feedResult);
|
|
},
|
|
|
|
/**
|
|
* See nsIFeedResultService.idl
|
|
*/
|
|
getFeedResult(uri) {
|
|
if (uri == null)
|
|
throw new Error("null URI!");
|
|
let resultList = this._results[uri.spec];
|
|
for (let result of resultList) {
|
|
if (result.uri == uri)
|
|
return result;
|
|
}
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* See nsIFeedResultService.idl
|
|
*/
|
|
removeFeedResult(uri) {
|
|
if (uri == null)
|
|
throw new Error("null URI!");
|
|
let resultList = this._results[uri.spec];
|
|
if (!resultList)
|
|
return;
|
|
let deletions = 0;
|
|
for (let i = 0; i < resultList.length; ++i) {
|
|
if (resultList[i].uri == uri) {
|
|
delete resultList[i];
|
|
++deletions;
|
|
}
|
|
}
|
|
|
|
// send the holes to the end
|
|
resultList.sort();
|
|
// and trim the list
|
|
resultList.splice(resultList.length - deletions, deletions);
|
|
if (resultList.length == 0)
|
|
delete this._results[uri.spec];
|
|
},
|
|
|
|
createInstance(outer, iid) {
|
|
if (outer != null)
|
|
throw Cr.NS_ERROR_NO_AGGREGATION;
|
|
return this.QueryInterface(iid);
|
|
},
|
|
|
|
QueryInterface: ChromeUtils.generateQI(["nsIFeedResultService",
|
|
"nsIFactory"]),
|
|
};
|
|
|
|
|
|
var components = [FeedConverter,
|
|
FeedResultService];
|
|
|
|
|
|
this.NSGetFactory = XPCOMUtils.generateNSGetFactory(components);
|