Issue #1258 - Part 1: Import mailnews, ldap, and mork from comm-esr52.9.1

mailnews/extensions/newsblog/content/Feed.js

@@ -0,0 +1,620 @@
+/* -*- Mode: JavaScript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+// Cache for all of the feeds currently being downloaded, indexed by URL,
+// so the load event listener can access the Feed objects after it finishes
+// downloading the feed.
+var FeedCache =
+{
+  mFeeds: {},
+
+  putFeed: function (aFeed)
+  {
+    this.mFeeds[this.normalizeHost(aFeed.url)] = aFeed;
+  },
+
+  getFeed: function (aUrl)
+  {
+    let index = this.normalizeHost(aUrl);
+    if (index in this.mFeeds)
+      return this.mFeeds[index];
+
+    return null;
+  },
+
+  removeFeed: function (aUrl)
+  {
+    let index = this.normalizeHost(aUrl);
+    if (index in this.mFeeds)
+      delete this.mFeeds[index];
+  },
+
+  normalizeHost: function (aUrl)
+  {
+    try
+    {
+      let normalizedUrl = Services.io.newURI(aUrl, null, null);
+      normalizedUrl.host = normalizedUrl.host.toLowerCase();
+      return normalizedUrl.spec
+    }
+    catch (ex)
+    {
+      return aUrl;
+    }
+  }
+};
+
+function Feed(aResource, aRSSServer)
+{
+  this.resource = aResource.QueryInterface(Ci.nsIRDFResource);
+  this.server = aRSSServer;
+}
+
+Feed.prototype = 
+{
+  description: null,
+  author: null,
+  request: null,
+  server: null,
+  downloadCallback: null,
+  resource: null,
+  items: new Array(),
+  itemsStored: 0,
+  mFolder: null,
+  mInvalidFeed: false,
+  mFeedType: null,
+  mLastModified: null,
+
+  get folder()
+  {
+    return this.mFolder;
+  },
+
+  set folder (aFolder)
+  {
+    this.mFolder = aFolder;
+  },
+
+  get name()
+  {
+    // Used for the feed's title in Subcribe dialog and opml export.
+    let name = this.title || this.description || this.url;
+    return name.replace(/[\n\r\t]+/g, " ").replace(/[\x00-\x1F]+/g, "");
+  },
+
+  get folderName()
+  {
+    if (this.mFolderName)
+      return this.mFolderName;
+
+    // Get a unique sanitized name. Use title or description as a base;
+    // these are mandatory by spec. Length of 80 is plenty.
+    let folderName = (this.title || this.description || "").substr(0,80);
+    let defaultName = FeedUtils.strings.GetStringFromName("ImportFeedsNew");
+    return this.mFolderName = FeedUtils.getSanitizedFolderName(this.server.rootMsgFolder,
+                                                               folderName,
+                                                               defaultName,
+                                                               true);
+  },
+
+  download: function(aParseItems, aCallback)
+  {
+     // May be null.
+    this.downloadCallback = aCallback;
+
+    // Whether or not to parse items when downloading and parsing the feed.
+    // Defaults to true, but setting to false is useful for obtaining
+    // just the title of the feed when the user subscribes to it.
+    this.parseItems = aParseItems == null ? true : aParseItems ? true : false;
+
+    // Before we do anything, make sure the url is an http url.  This is just
+    // a sanity check so we don't try opening mailto urls, imap urls, etc. that
+    // the user may have tried to subscribe to as an rss feed.
+    if (!FeedUtils.isValidScheme(this.url))
+    {
+       // Simulate an invalid feed error.
+      FeedUtils.log.info("Feed.download: invalid protocol for - " + this.url);
+      this.onParseError(this);
+      return;
+    }
+
+    // Before we try to download the feed, make sure we aren't already
+    // processing the feed by looking up the url in our feed cache.
+    if (FeedCache.getFeed(this.url))
+    {
+      if (this.downloadCallback)
+        this.downloadCallback.downloaded(this, FeedUtils.kNewsBlogFeedIsBusy);
+      // Return, the feed is already in use.
+      return;
+    }
+
+    if (Services.io.offline) {
+      // If offline and don't want to go online, just add the feed subscription;
+      // it can be verified later (the folder name will be the url if not adding
+      // to an existing folder). Only for subscribe actions; passive biff and
+      // active get new messages are handled prior to getting here.
+      let win = Services.wm.getMostRecentWindow("mail:3pane");
+      if (!win.MailOfflineMgr.getNewMail()) {
+        this.storeNextItem();
+        return;
+      }
+    }
+
+    this.request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].
+                   createInstance(Ci.nsIXMLHttpRequest);
+    // Must set onProgress before calling open.
+    this.request.onprogress = this.onProgress;
+    this.request.open("GET", this.url, true);
+    this.request.channel.loadFlags |= Ci.nsIRequest.LOAD_BYPASS_CACHE |
+                                      Ci.nsIRequest.INHIBIT_CACHING;
+
+    // Some servers, if sent If-Modified-Since, will send 304 if subsequently
+    // not sent If-Modified-Since, as in the case of an unsubscribe and new
+    // subscribe.  Send start of century date to force a download; some servers
+    // will 304 on older dates (such as epoch 1970).
+    let lastModified = this.lastModified || "Sat, 01 Jan 2000 00:00:00 GMT";
+    this.request.setRequestHeader("If-Modified-Since", lastModified);
+
+    // Only order what you're going to eat...
+    this.request.responseType = "document";
+    this.request.overrideMimeType("text/xml");
+    this.request.setRequestHeader("Accept", FeedUtils.REQUEST_ACCEPT);
+    this.request.timeout = FeedUtils.REQUEST_TIMEOUT;
+    this.request.onload = this.onDownloaded;
+    this.request.onerror = this.onDownloadError;
+    this.request.ontimeout = this.onDownloadError;
+    FeedCache.putFeed(this);
+    this.request.send(null);
+  },
+
+  onDownloaded: function(aEvent)
+  {
+    let request = aEvent.target;
+    let isHttp = request.channel.originalURI.scheme.startsWith("http");
+    let url = request.channel.originalURI.spec;
+    if (isHttp && (request.status < 200 || request.status >= 300))
+    {
+      Feed.prototype.onDownloadError(aEvent);
+      return;
+    }
+
+    FeedUtils.log.debug("Feed.onDownloaded: got a download - " + url);
+    let feed = FeedCache.getFeed(url);
+    if (!feed)
+      throw new Error("Feed.onDownloaded: error - couldn't retrieve feed " +
+                      "from cache");
+
+    // If the server sends a Last-Modified header, store the property on the
+    // feed so we can use it when making future requests, to avoid downloading
+    // and parsing feeds that have not changed.  Don't update if merely checking
+    // the url, as for subscribe move/copy, as a subsequent refresh may get a 304.
+    // Save the response and persist it only upon successful completion of the
+    // refresh cycle (i.e. not if the request is cancelled).
+    let lastModifiedHeader = request.getResponseHeader("Last-Modified");
+    feed.mLastModified = (lastModifiedHeader && feed.parseItems) ?
+                           lastModifiedHeader : null;
+
+    // The download callback is called asynchronously when parse() is done.
+    feed.parse();
+  },
+  
+  onProgress: function(aEvent) 
+  {
+    let request = aEvent.target;
+    let url = request.channel.originalURI.spec;
+    let feed = FeedCache.getFeed(url);
+
+    if (feed.downloadCallback)
+      feed.downloadCallback.onProgress(feed, aEvent.loaded, aEvent.total,
+                                       aEvent.lengthComputable);
+  },
+
+  onDownloadError: function(aEvent)
+  {
+    let request = aEvent.target;
+    let url = request.channel.originalURI.spec;
+    let feed = FeedCache.getFeed(url);
+    if (feed.downloadCallback) 
+    {
+      // Generic network or 'not found' error initially.
+      let error = FeedUtils.kNewsBlogRequestFailure;
+
+      if (request.status == 304) {
+        // If the http status code is 304, the feed has not been modified
+        // since we last downloaded it and does not need to be parsed.
+        error = FeedUtils.kNewsBlogNoNewItems;
+      }
+      else {
+        let [errType, errName] = FeedUtils.createTCPErrorFromFailedXHR(request);
+        FeedUtils.log.info("Feed.onDownloaded: request errType:errName:statusCode - " +
+                           errType + ":" + errName + ":" + request.status);
+        if (errType == "SecurityCertificate")
+          // This is the code for nsINSSErrorsService.ERROR_CLASS_BAD_CERT
+          // overrideable security certificate errors.
+          error = FeedUtils.kNewsBlogBadCertError;
+
+        if (request.status == 401 || request.status == 403)
+          // Unauthorized or Forbidden.
+          error = FeedUtils.kNewsBlogNoAuthError;
+      }
+
+      feed.downloadCallback.downloaded(feed, error);
+    }
+
+    FeedCache.removeFeed(url);
+  },
+
+  onParseError: function(aFeed)
+  {
+    if (!aFeed)
+      return;
+
+    aFeed.mInvalidFeed = true;
+    if (aFeed.downloadCallback)
+      aFeed.downloadCallback.downloaded(aFeed, FeedUtils.kNewsBlogInvalidFeed);
+
+    FeedCache.removeFeed(aFeed.url);
+  },
+
+  onUrlChange: function(aFeed, aOldUrl)
+  {
+    if (!aFeed)
+      return;
+
+    // Simulate a cancel after a url update; next cycle will check the new url.
+    aFeed.mInvalidFeed = true;
+    if (aFeed.downloadCallback)
+      aFeed.downloadCallback.downloaded(aFeed, FeedUtils.kNewsBlogCancel);
+
+    FeedCache.removeFeed(aOldUrl);
+  },
+
+  get url()
+  {
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    let url = ds.GetTarget(this.resource, FeedUtils.DC_IDENTIFIER, true);
+    if (url)
+      url = url.QueryInterface(Ci.nsIRDFLiteral).Value;
+    else
+      url = this.resource.ValueUTF8;
+
+    return url;
+  },
+
+  get title()
+  {
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    let title = ds.GetTarget(this.resource, FeedUtils.DC_TITLE, true);
+    if (title)
+      title = title.QueryInterface(Ci.nsIRDFLiteral).Value;
+
+    return title;
+  },
+
+  set title (aNewTitle)
+  {
+    if (!aNewTitle)
+      return;
+
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    aNewTitle = FeedUtils.rdf.GetLiteral(aNewTitle);
+    let old_title = ds.GetTarget(this.resource, FeedUtils.DC_TITLE, true);
+    if (old_title)
+        ds.Change(this.resource, FeedUtils.DC_TITLE, old_title, aNewTitle);
+    else
+        ds.Assert(this.resource, FeedUtils.DC_TITLE, aNewTitle, true);
+  },
+
+  get lastModified()
+  {
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    let lastModified = ds.GetTarget(this.resource,
+                                    FeedUtils.DC_LASTMODIFIED,
+                                    true);
+    if (lastModified)
+      lastModified = lastModified.QueryInterface(Ci.nsIRDFLiteral).Value;
+
+    return lastModified;
+  },
+
+  set lastModified(aLastModified)
+  {
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    aLastModified = FeedUtils.rdf.GetLiteral(aLastModified);
+    let old_lastmodified = ds.GetTarget(this.resource,
+                                        FeedUtils.DC_LASTMODIFIED,
+                                        true);
+    if (old_lastmodified)
+      ds.Change(this.resource, FeedUtils.DC_LASTMODIFIED,
+                old_lastmodified, aLastModified);
+    else
+      ds.Assert(this.resource, FeedUtils.DC_LASTMODIFIED, aLastModified, true);
+  },
+
+  get quickMode ()
+  {
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    let quickMode = ds.GetTarget(this.resource, FeedUtils.FZ_QUICKMODE, true);
+    if (quickMode)
+    {
+      quickMode = quickMode.QueryInterface(Ci.nsIRDFLiteral);
+      quickMode = quickMode.Value == "true";
+    }
+
+    return quickMode;
+  },
+
+  set quickMode (aNewQuickMode)
+  {
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    aNewQuickMode = FeedUtils.rdf.GetLiteral(aNewQuickMode);
+    let old_quickMode = ds.GetTarget(this.resource, 
+                                     FeedUtils.FZ_QUICKMODE,
+                                     true);
+    if (old_quickMode)
+      ds.Change(this.resource, FeedUtils.FZ_QUICKMODE,
+                old_quickMode, aNewQuickMode);
+    else
+      ds.Assert(this.resource, FeedUtils.FZ_QUICKMODE,
+                aNewQuickMode, true);
+  },
+
+  get options ()
+  {
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    let options = ds.GetTarget(this.resource, FeedUtils.FZ_OPTIONS, true);
+    if (options)
+      return JSON.parse(options.QueryInterface(Ci.nsIRDFLiteral).Value);
+
+    return null;
+  },
+
+  set options (aOptions)
+  {
+    let newOptions = aOptions ? FeedUtils.newOptions(aOptions) :
+                                FeedUtils._optionsDefault;
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    newOptions = FeedUtils.rdf.GetLiteral(JSON.stringify(newOptions));
+    let oldOptions = ds.GetTarget(this.resource, FeedUtils.FZ_OPTIONS, true);
+    if (oldOptions)
+      ds.Change(this.resource, FeedUtils.FZ_OPTIONS, oldOptions, newOptions);
+    else
+      ds.Assert(this.resource, FeedUtils.FZ_OPTIONS, newOptions, true);
+  },
+
+  categoryPrefs: function ()
+  {
+    let categoryPrefsAcct = FeedUtils.getOptionsAcct(this.server).category;
+    if (!this.options)
+      return categoryPrefsAcct;
+
+    return this.options.category;
+  },
+
+  get link ()
+  {
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    let link = ds.GetTarget(this.resource, FeedUtils.RSS_LINK, true);
+    if (link)
+      link = link.QueryInterface(Ci.nsIRDFLiteral).Value;
+
+    return link;
+  },
+
+  set link (aNewLink)
+  {
+    if (!aNewLink)
+      return;
+
+    let ds = FeedUtils.getSubscriptionsDS(this.server);
+    aNewLink = FeedUtils.rdf.GetLiteral(aNewLink);
+    let old_link = ds.GetTarget(this.resource, FeedUtils.RSS_LINK, true);
+    if (old_link)
+      ds.Change(this.resource, FeedUtils.RSS_LINK, old_link, aNewLink);
+    else
+      ds.Assert(this.resource, FeedUtils.RSS_LINK, aNewLink, true);
+  },
+
+  parse: function()
+  {
+    // Create a feed parser which will parse the feed.
+    let parser = new FeedParser();
+    this.itemsToStore = parser.parseFeed(this, this.request.responseXML);
+    parser = null;
+
+    if (this.mInvalidFeed)
+    {
+      this.request = null;
+      this.mInvalidFeed = false;
+      return;
+    }
+
+    // storeNextItem() will iterate through the parsed items, storing each one.
+    this.itemsToStoreIndex = 0;
+    this.itemsStored = 0;
+    this.storeNextItem();
+  },
+
+  invalidateItems: function ()
+  {
+    let ds = FeedUtils.getItemsDS(this.server);
+    FeedUtils.log.debug("Feed.invalidateItems: for url - " + this.url);
+    let items = ds.GetSources(FeedUtils.FZ_FEED, this.resource, true);
+    let item;
+
+    while (items.hasMoreElements())
+    {
+      item = items.getNext();
+      item = item.QueryInterface(Ci.nsIRDFResource);
+      FeedUtils.log.trace("Feed.invalidateItems: item - " + item.Value);
+      let valid = ds.GetTarget(item, FeedUtils.FZ_VALID, true);
+      if (valid)
+        ds.Unassert(item, FeedUtils.FZ_VALID, valid, true);
+    }
+  },
+
+  removeInvalidItems: function(aDeleteFeed)
+  {
+    let ds = FeedUtils.getItemsDS(this.server);
+    FeedUtils.log.debug("Feed.removeInvalidItems: for url - " + this.url);
+    let items = ds.GetSources(FeedUtils.FZ_FEED, this.resource, true);
+    let item;
+    let currentTime = new Date().getTime();
+    while (items.hasMoreElements())
+    {
+      item = items.getNext();
+      item = item.QueryInterface(Ci.nsIRDFResource);
+
+      if (ds.HasAssertion(item, FeedUtils.FZ_VALID,
+                          FeedUtils.RDF_LITERAL_TRUE, true))
+        continue;
+
+      let lastSeenTime = ds.GetTarget(item, FeedUtils.FZ_LAST_SEEN_TIMESTAMP, true);
+      if (lastSeenTime)
+        lastSeenTime = parseInt(lastSeenTime.QueryInterface(Ci.nsIRDFLiteral).Value)
+      else
+        lastSeenTime = 0;
+
+      if ((currentTime - lastSeenTime) < FeedUtils.INVALID_ITEM_PURGE_DELAY &&
+          !aDeleteFeed)
+        // Don't immediately purge items in active feeds; do so for deleted feeds.
+        continue;
+
+      FeedUtils.log.trace("Feed.removeInvalidItems: item - " + item.Value);
+      ds.Unassert(item, FeedUtils.FZ_FEED, this.resource, true);
+      if (ds.hasArcOut(item, FeedUtils.FZ_FEED))
+        FeedUtils.log.debug("Feed.removeInvalidItems: " + item.Value +
+                            " is from more than one feed; only the reference to" +
+                            " this feed removed");
+      else
+        FeedUtils.removeAssertions(ds, item);
+    }
+  },
+
+  createFolder: function()
+  {
+    if (this.folder)
+      return;
+
+    try {
+      this.folder = this.server.rootMsgFolder
+                               .QueryInterface(Ci.nsIMsgLocalMailFolder)
+                               .createLocalSubfolder(this.folderName);
+    }
+    catch (ex) {
+      // An error creating.
+      FeedUtils.log.info("Feed.createFolder: error creating folder - '"+
+                          this.folderName+"' in parent folder "+
+                          this.server.rootMsgFolder.filePath.path + " -- "+ex);
+      // But its remnants are still there, clean up.
+      let xfolder = this.server.rootMsgFolder.getChildNamed(this.folderName);
+      this.server.rootMsgFolder.propagateDelete(xfolder, true, null);
+    }
+  },
+
+  // Gets the next item from itemsToStore and forces that item to be stored
+  // to the folder.  If more items are left to be stored, fires a timer for
+  // the next one, otherwise triggers a download done notification to the UI.
+  storeNextItem: function()
+  {
+    if (FeedUtils.CANCEL_REQUESTED)
+    {
+      FeedUtils.CANCEL_REQUESTED = false;
+      this.cleanupParsingState(this, FeedUtils.kNewsBlogCancel);
+      return;
+    }
+
+    if (!this.itemsToStore || !this.itemsToStore.length)
+    {
+      let code = FeedUtils.kNewsBlogSuccess;
+      this.createFolder();
+      if (!this.folder)
+        code = FeedUtils.kNewsBlogFileError;
+      this.cleanupParsingState(this, code);
+      return;
+    }
+
+    let item = this.itemsToStore[this.itemsToStoreIndex];
+
+    if (item.store())
+      this.itemsStored++;
+
+    if (!this.folder)
+    {
+      this.cleanupParsingState(this, FeedUtils.kNewsBlogFileError);
+      return;
+    }
+
+    this.itemsToStoreIndex++;
+
+    // If the listener is tracking progress for each item, report it here.
+    if (item.feed.downloadCallback && item.feed.downloadCallback.onFeedItemStored)
+      item.feed.downloadCallback.onFeedItemStored(item.feed,
+                                                  this.itemsToStoreIndex,
+                                                  this.itemsToStore.length);
+
+    // Eventually we'll report individual progress here.
+
+    if (this.itemsToStoreIndex < this.itemsToStore.length)
+    {
+      if (!this.storeItemsTimer)
+        this.storeItemsTimer = Cc["@mozilla.org/timer;1"].
+                               createInstance(Ci.nsITimer);
+      this.storeItemsTimer.initWithCallback(this, 50, Ci.nsITimer.TYPE_ONE_SHOT);
+    }
+    else
+    {
+      // We have just finished downloading one or more feed items into the
+      // destination folder; if the folder is still listed as having new
+      // messages in it, then we should set the biff state on the folder so the
+      // right RDF UI changes happen in the folder pane to indicate new mail.
+      if (item.feed.folder.hasNewMessages)
+      {
+        item.feed.folder.biffState = Ci.nsIMsgFolder.nsMsgBiffState_NewMail;
+        // Run the bayesian spam filter, if enabled.
+        item.feed.folder.callFilterPlugins(null);
+      }
+
+      this.cleanupParsingState(this, FeedUtils.kNewsBlogSuccess);
+    }
+  },
+
+  cleanupParsingState: function(aFeed, aCode)
+  {
+    // Now that we are done parsing the feed, remove the feed from the cache.
+    FeedCache.removeFeed(aFeed.url);
+
+    if (aFeed.parseItems)
+    {
+      // Do this only if we're in parse/store mode.
+      aFeed.removeInvalidItems(false);
+
+      if (aCode == FeedUtils.kNewsBlogSuccess && aFeed.mLastModified)
+        aFeed.lastModified = aFeed.mLastModified;
+
+      // Flush any feed item changes to disk.
+      let ds = FeedUtils.getItemsDS(aFeed.server);
+      ds.Flush();
+      FeedUtils.log.debug("Feed.cleanupParsingState: items stored - " + this.itemsStored);
+    }
+
+    // Force the xml http request to go away.  This helps reduce some nasty
+    // assertions on shut down.
+    this.request = null;
+    this.itemsToStore = "";
+    this.itemsToStoreIndex = 0;
+    this.itemsStored = 0;
+    this.storeItemsTimer = null;
+
+    if (aFeed.downloadCallback)
+      aFeed.downloadCallback.downloaded(aFeed, aCode);
+  },
+
+  // nsITimerCallback
+  notify: function(aTimer)
+  {
+    this.storeNextItem();
+  }
+};

mailnews/extensions/newsblog/content/FeedItem.js

@@ -0,0 +1,490 @@
+/* -*- Mode: JavaScript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+function FeedItem()
+{
+  this.mDate = FeedUtils.getValidRFC5322Date();
+  this.mUnicodeConverter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].
+                           createInstance(Ci.nsIScriptableUnicodeConverter);
+  this.mParserUtils = Cc["@mozilla.org/parserutils;1"].
+                      getService(Ci.nsIParserUtils);
+}
+
+FeedItem.prototype =
+{
+  // Only for IETF Atom.
+  xmlContentBase: null,
+  id: null,
+  feed: null,
+  description: null,
+  content: null,
+  enclosures: [],
+  title: null,
+  author: "anonymous",
+  inReplyTo: "",
+  keywords: [],
+  mURL: null,
+  characterSet: "UTF-8",
+
+  ENCLOSURE_BOUNDARY_PREFIX: "--------------", // 14 dashes
+  ENCLOSURE_HEADER_BOUNDARY_PREFIX: "------------", // 12 dashes
+  MESSAGE_TEMPLATE: '\n' +
+    '<html>\n' +
+    '  <head>\n' +
+    '    <title>%TITLE%</title>\n' +
+    '    <base href="%BASE%">\n' +
+    '  </head>\n' +
+    '  <body id="msgFeedSummaryBody" selected="false">\n' +
+    '    %CONTENT%\n' +
+    '  </body>\n' +
+    '</html>\n',
+
+  get url()
+  {
+    return this.mURL;
+  },
+
+  set url(aVal)
+  {
+    try
+    {
+      this.mURL = Services.io.newURI(aVal, null, null).spec;
+    }
+    catch(ex)
+    {
+      // The url as published or constructed can be a non url.  It's used as a
+      // feeditem identifier in feeditems.rdf, as a messageId, and as an href
+      // and for the content-base header.  Save as is; ensure not null.
+      this.mURL = aVal ? aVal : "";
+    }
+  },
+
+  get date()
+  {
+    return this.mDate;
+  },
+
+  set date (aVal)
+  {
+    this.mDate = aVal;
+  },
+
+  get identity ()
+  {
+    return this.feed.name + ": " + this.title + " (" + this.id + ")"
+  },
+
+  normalizeMessageID: function(messageID)
+  {
+    // Escape occurrences of message ID meta characters <, >, and @.
+    messageID.replace(/</g, "%3C");
+    messageID.replace(/>/g, "%3E");
+    messageID.replace(/@/g, "%40");
+    messageID = "<" + messageID.trim() + "@" + "localhost.localdomain" + ">";
+
+    FeedUtils.log.trace("FeedItem.normalizeMessageID: messageID - " + messageID);
+    return messageID;
+  },
+
+  get itemUniqueURI()
+  {
+    return this.createURN(this.id);
+  },
+
+  get contentBase()
+  {
+    if(this.xmlContentBase)
+      return this.xmlContentBase
+    else
+      return this.mURL;
+  },
+
+  store: function()
+  {
+    // this.title and this.content contain HTML.
+    // this.mUrl and this.contentBase contain plain text.
+
+    let stored = false;
+    let resource = this.findStoredResource();
+    if (!this.feed.folder)
+      return stored;
+
+    if (resource == null)
+    {
+      resource = FeedUtils.rdf.GetResource(this.itemUniqueURI);
+      if (!this.content)
+      {
+        FeedUtils.log.trace("FeedItem.store: " + this.identity +
+                            " no content; storing description or title");
+        this.content = this.description || this.title;
+      }
+
+      let content = this.MESSAGE_TEMPLATE;
+      content = content.replace(/%TITLE%/, this.title);
+      content = content.replace(/%BASE%/, this.htmlEscape(this.contentBase));
+      content = content.replace(/%CONTENT%/, this.content);
+      this.content = content;
+      this.writeToFolder();
+      this.markStored(resource);
+      stored = true;
+    }
+    this.markValid(resource);
+    return stored;
+  },
+
+  findStoredResource: function()
+  {
+    // Checks to see if the item has already been stored in its feed's
+    // message folder.
+    FeedUtils.log.trace("FeedItem.findStoredResource: checking if stored - " +
+                        this.identity);
+
+    let server = this.feed.server;
+    let folder = this.feed.folder;
+
+    if (!folder)
+    {
+      FeedUtils.log.debug("FeedItem.findStoredResource: folder '" +
+                          this.feed.folderName +
+                          "' doesn't exist; creating as child of " +
+                          server.rootMsgFolder.prettyName + "\n");
+      this.feed.createFolder();
+      return null;
+    }
+
+    let ds = FeedUtils.getItemsDS(server);
+    let itemURI = this.itemUniqueURI;
+    let itemResource = FeedUtils.rdf.GetResource(itemURI);
+
+    let downloaded = ds.GetTarget(itemResource, FeedUtils.FZ_STORED, true);
+
+    if (!downloaded ||
+        downloaded.QueryInterface(Ci.nsIRDFLiteral).Value == "false")
+    {
+      FeedUtils.log.trace("FeedItem.findStoredResource: not stored");
+      return null;
+    }
+
+    FeedUtils.log.trace("FeedItem.findStoredResource: already stored");
+    return itemResource;
+  },
+
+  markValid: function(resource)
+  {
+    let ds = FeedUtils.getItemsDS(this.feed.server);
+
+    let newTimeStamp = FeedUtils.rdf.GetLiteral(new Date().getTime());
+    let currentTimeStamp = ds.GetTarget(resource,
+                                        FeedUtils.FZ_LAST_SEEN_TIMESTAMP,
+                                        true);
+    if (currentTimeStamp)
+      ds.Change(resource, FeedUtils.FZ_LAST_SEEN_TIMESTAMP,
+                currentTimeStamp, newTimeStamp);
+    else
+      ds.Assert(resource, FeedUtils.FZ_LAST_SEEN_TIMESTAMP,
+                newTimeStamp, true);
+
+    if (!ds.HasAssertion(resource, FeedUtils.FZ_FEED,
+                         FeedUtils.rdf.GetResource(this.feed.url), true))
+      ds.Assert(resource, FeedUtils.FZ_FEED,
+                FeedUtils.rdf.GetResource(this.feed.url), true);
+
+    if (ds.hasArcOut(resource, FeedUtils.FZ_VALID))
+    {
+      let currentValue = ds.GetTarget(resource, FeedUtils.FZ_VALID, true);
+      ds.Change(resource, FeedUtils.FZ_VALID,
+                currentValue, FeedUtils.RDF_LITERAL_TRUE);
+    }
+    else
+      ds.Assert(resource, FeedUtils.FZ_VALID, FeedUtils.RDF_LITERAL_TRUE, true);
+  },
+
+  markStored: function(resource)
+  {
+    let ds = FeedUtils.getItemsDS(this.feed.server);
+
+    if (!ds.HasAssertion(resource, FeedUtils.FZ_FEED,
+                         FeedUtils.rdf.GetResource(this.feed.url), true))
+      ds.Assert(resource, FeedUtils.FZ_FEED,
+                FeedUtils.rdf.GetResource(this.feed.url), true);
+
+    let currentValue;
+    if (ds.hasArcOut(resource, FeedUtils.FZ_STORED))
+    {
+      currentValue = ds.GetTarget(resource, FeedUtils.FZ_STORED, true);
+      ds.Change(resource, FeedUtils.FZ_STORED, 
+                currentValue, FeedUtils.RDF_LITERAL_TRUE);
+    }
+    else
+      ds.Assert(resource, FeedUtils.FZ_STORED,
+                FeedUtils.RDF_LITERAL_TRUE, true);
+  },
+
+  mimeEncodeSubject: function(aSubject, aCharset)
+  {
+    // This routine sometimes throws exceptions for mis-encoded data so
+    // wrap it with a try catch for now.
+    let newSubject;
+    try
+    {
+      newSubject = mailServices.mimeConverter.encodeMimePartIIStr_UTF8(aSubject,
+                     false,
+                     aCharset, 9, 72);
+    }
+    catch (ex)
+    {
+      newSubject = aSubject;
+    }
+
+    return newSubject;
+  },
+
+  writeToFolder: function()
+  {
+    FeedUtils.log.trace("FeedItem.writeToFolder: " + this.identity +
+                        " writing to message folder " + this.feed.name);
+    // Convert the title to UTF-16 before performing our HTML entity
+    // replacement reg expressions.
+    let title = this.title;
+
+    // The subject may contain HTML entities.  Convert these to their unencoded
+    // state. i.e. &amp; becomes '&'.
+    title = this.mParserUtils.convertToPlainText(
+        title,
+        Ci.nsIDocumentEncoder.OutputSelectionOnly |
+        Ci.nsIDocumentEncoder.OutputAbsoluteLinks,
+        0);
+
+    // Compress white space in the subject to make it look better.  Trim
+    // leading/trailing spaces to prevent mbox header folding issue at just
+    // the right subject length.
+    title = title.replace(/[\t\r\n]+/g, " ").trim();
+
+    this.title = this.mimeEncodeSubject(title, this.characterSet);
+
+    // If the date looks like it's in W3C-DTF format, convert it into
+    // an IETF standard date.  Otherwise assume it's in IETF format.
+    if (this.mDate.search(/^\d\d\d\d/) != -1)
+      this.mDate = new Date(this.mDate).toUTCString();
+
+    // If there is an inreplyto value, create the headers.
+    let inreplytoHdrsStr = this.inReplyTo ?
+      ("References: " + this.inReplyTo + "\n" +
+       "In-Reply-To: " + this.inReplyTo + "\n") : "";
+
+    // If there are keywords (categories), create the headers. In the case of
+    // a longer than RFC5322 recommended line length, create multiple folded
+    // lines (easier to parse than multiple Keywords headers).
+    let keywordsStr = "";
+    if (this.keywords.length)
+    {
+      let HEADER = "Keywords: ";
+      let MAXLEN = 78;
+      keywordsStr = HEADER;
+      let keyword;
+      let keywords = [].concat(this.keywords);
+      let lines = [];
+      while (keywords.length)
+      {
+        keyword = keywords.shift();
+        if (keywordsStr.length + keyword.length > MAXLEN)
+        {
+          lines.push(keywordsStr)
+          keywordsStr = " ".repeat(HEADER.length);
+        }
+        keywordsStr += keyword + ",";
+      }
+      keywordsStr = keywordsStr.replace(/,$/,"\n");
+      lines.push(keywordsStr)
+      keywordsStr = lines.join("\n");
+    }
+
+    // Escape occurrences of "From " at the beginning of lines of
+    // content per the mbox standard, since "From " denotes a new
+    // message, and add a line break so we know the last line has one.
+    this.content = this.content.replace(/([\r\n]+)(>*From )/g, "$1>$2");
+    this.content += "\n";
+
+    // The opening line of the message, mandated by standards to start
+    // with "From ".  It's useful to construct this separately because
+    // we not only need to write it into the message, we also need to
+    // use it to calculate the offset of the X-Mozilla-Status lines from
+    // the front of the message for the statusOffset property of the
+    // DB header object.
+    let openingLine = 'From - ' + this.mDate + '\n';
+
+    let source =
+      openingLine +
+      'X-Mozilla-Status: 0000\n' +
+      'X-Mozilla-Status2: 00000000\n' +
+      'X-Mozilla-Keys: ' + " ".repeat(80) + '\n' +
+      'Received: by localhost; ' + FeedUtils.getValidRFC5322Date() + '\n' +
+      'Date: ' + this.mDate + '\n' +
+      'Message-Id: ' + this.normalizeMessageID(this.id) + '\n' +
+      'From: ' + this.author + '\n' +
+      'MIME-Version: 1.0\n' +
+      'Subject: ' + this.title + '\n' +
+      inreplytoHdrsStr +
+      keywordsStr +
+      'Content-Transfer-Encoding: 8bit\n' +
+      'Content-Base: ' + this.mURL + '\n';
+
+    if (this.enclosures.length)
+    {
+      let boundaryID = source.length;
+      source += 'Content-Type: multipart/mixed; boundary="' +
+                this.ENCLOSURE_HEADER_BOUNDARY_PREFIX + boundaryID + '"' + '\n\n' +
+                'This is a multi-part message in MIME format.\n' +
+                this.ENCLOSURE_BOUNDARY_PREFIX + boundaryID + '\n' +
+                'Content-Type: text/html; charset=' + this.characterSet + '\n' +
+                'Content-Transfer-Encoding: 8bit\n' +
+                this.content;
+
+      this.enclosures.forEach(function(enclosure) {
+        source += enclosure.convertToAttachment(boundaryID);
+      });
+
+      source += this.ENCLOSURE_BOUNDARY_PREFIX + boundaryID + '--' + '\n\n\n';
+    }
+    else
+      source += 'Content-Type: text/html; charset=' + this.characterSet + '\n' +
+                this.content;
+
+    FeedUtils.log.trace("FeedItem.writeToFolder: " + this.identity +
+                        " is " + source.length + " characters long");
+
+    // Get the folder and database storing the feed's messages and headers.
+    let folder = this.feed.folder.QueryInterface(Ci.nsIMsgLocalMailFolder);
+    let msgFolder = folder.QueryInterface(Ci.nsIMsgFolder);
+    msgFolder.gettingNewMessages = true;
+    // Source is a unicode string, we want to save a char * string in
+    // the original charset. So convert back.
+    this.mUnicodeConverter.charset = this.characterSet;
+    let msgDBHdr = folder.addMessage(this.mUnicodeConverter.ConvertFromUnicode(source));
+    msgDBHdr.OrFlags(Ci.nsMsgMessageFlags.FeedMsg);
+    msgFolder.gettingNewMessages = false;
+    this.tagItem(msgDBHdr, this.keywords);
+  },
+
+/**
+ * Autotag messages.
+ *
+ * @param  nsIMsgDBHdr aMsgDBHdr - message to tag
+ * @param  array aKeywords       - keywords (tags)
+ */
+  tagItem: function(aMsgDBHdr, aKeywords)
+  {
+    let categoryPrefs = this.feed.categoryPrefs();
+    if (!aKeywords.length || !categoryPrefs.enabled)
+      return;
+
+    let msgArray = Cc["@mozilla.org/array;1"].createInstance(Ci.nsIMutableArray);
+    msgArray.appendElement(aMsgDBHdr, false);
+
+    let prefix = categoryPrefs.prefixEnabled ? categoryPrefs.prefix : "";
+    let rtl = Services.prefs.getIntPref("bidi.direction") == 2;
+
+    let keys = [];
+    for (let keyword of aKeywords)
+    {
+      keyword = rtl ? keyword + prefix : prefix + keyword;
+      let keyForTag = MailServices.tags.getKeyForTag(keyword);
+      if (!keyForTag)
+      {
+        // Add the tag if it doesn't exist.
+        MailServices.tags.addTag(keyword, "", FeedUtils.AUTOTAG);
+        keyForTag = MailServices.tags.getKeyForTag(keyword);
+      }
+
+      // Add the tag key to the keys array.
+      keys.push(keyForTag);
+    }
+
+    if (keys.length)
+      // Add the keys to the message.
+      aMsgDBHdr.folder.addKeywordsToMessages(msgArray, keys.join(" "));
+  },
+
+  htmlEscape: function(s)
+  {
+    s = s.replace(/&/g, "&amp;");
+    s = s.replace(/>/g, "&gt;");
+    s = s.replace(/</g, "&lt;");
+    s = s.replace(/'/g, "&#39;");
+    s = s.replace(/"/g, "&quot;");
+    return s;
+  },
+
+  createURN: function(aName)
+  {
+    // Returns name as a URN in the 'feeditem' namespace. The returned URN is
+    // (or is intended to be) RFC2141 compliant.
+    // The builtin encodeURI provides nearly the exact encoding functionality
+    // required by the RFC.  The exceptions are that NULL characters should not
+    // appear, and that #, /, ?, &, and ~ should be escaped.
+    // NULL characters are removed before encoding.
+
+    let name = aName.replace(/\0/g, "");
+    let encoded = encodeURI(name);
+    encoded = encoded.replace(/\#/g, "%23");
+    encoded = encoded.replace(/\//g, "%2f");
+    encoded = encoded.replace(/\?/g, "%3f");
+    encoded = encoded.replace(/\&/g, "%26");
+    encoded = encoded.replace(/\~/g, "%7e");
+
+    return FeedUtils.FZ_ITEM_NS + encoded;
+  }
+};
+
+
+// A feed enclosure is to RSS what an attachment is for e-mail.  We make
+// enclosures look like attachments in the UI.
+function FeedEnclosure(aURL, aContentType, aLength, aTitle)
+{
+  this.mURL = aURL;
+  // Store a reasonable mimetype if content-type is not present.
+  this.mContentType = aContentType || "application/unknown";
+  this.mLength = aLength;
+  this.mTitle = aTitle;
+
+  // Generate a fileName from the URL.
+  if (this.mURL)
+  {
+    try
+    {
+      this.mFileName = Services.io.newURI(this.mURL, null, null).
+                                   QueryInterface(Ci.nsIURL).
+                                   fileName;
+    }
+    catch(ex)
+    {
+      this.mFileName = this.mURL;
+    }
+  }
+}
+
+FeedEnclosure.prototype =
+{
+  mURL: "",
+  mContentType: "",
+  mLength: 0,
+  mFileName: "",
+  mTitle: "",
+  ENCLOSURE_BOUNDARY_PREFIX: "--------------", // 14 dashes
+
+  // Returns a string that looks like an e-mail attachment which represents
+  // the enclosure.
+  convertToAttachment: function(aBoundaryID)
+  {
+    return '\n' +
+      this.ENCLOSURE_BOUNDARY_PREFIX + aBoundaryID + '\n' +
+      'Content-Type: ' + this.mContentType +
+                     '; name="' + (this.mTitle || this.mFileName) +
+                     (this.mLength ? '"; size=' + this.mLength : '"') + '\n' +
+      'X-Mozilla-External-Attachment-URL: ' + this.mURL + '\n' +
+      'Content-Disposition: attachment; filename="' + this.mFileName + '"\n\n' +
+      FeedUtils.strings.GetStringFromName("externalAttachmentMsg") + '\n';
+  }
+};

mailnews/extensions/newsblog/content/am-newsblog.js

@@ -0,0 +1,63 @@
+/* -*- Mode: JavaScript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+Components.utils.import("resource:///modules/FeedUtils.jsm");
+
+var gServer, autotagEnable, autotagUsePrefix, autotagPrefix;
+
+function onInit(aPageId, aServerId)
+{
+  var accountName = document.getElementById("server.prettyName");
+  var title = document.getElementById("am-newsblog-title");
+  var defaultTitle = title.getAttribute("defaultTitle");
+
+  var titleValue;
+  if (accountName.value)
+    titleValue = defaultTitle + " - <" + accountName.value + ">";
+  else
+    titleValue = defaultTitle;
+
+  title.setAttribute("title", titleValue);
+  document.title = titleValue;
+
+  onCheckItem("server.biffMinutes", ["server.doBiff"]);
+
+  autotagEnable = document.getElementById("autotagEnable");
+  autotagUsePrefix = document.getElementById("autotagUsePrefix");
+  autotagPrefix = document.getElementById("autotagPrefix");
+
+  let categoryPrefsAcct = FeedUtils.getOptionsAcct(gServer).category;
+  autotagEnable.checked = categoryPrefsAcct.enabled;
+  autotagUsePrefix.disabled = !autotagEnable.checked;
+  autotagUsePrefix.checked = categoryPrefsAcct.prefixEnabled;
+  autotagPrefix.disabled = autotagUsePrefix.disabled || !autotagUsePrefix.checked;
+  autotagPrefix.value = categoryPrefsAcct.prefix;
+}
+
+function onPreInit(account, accountValues)
+{
+  gServer = account.incomingServer;
+}
+
+function setCategoryPrefs(aNode)
+{
+  let options =  FeedUtils.getOptionsAcct(gServer);
+  switch (aNode.id) {
+    case "autotagEnable":
+      options.category.enabled = aNode.checked;
+      autotagUsePrefix.disabled = !aNode.checked;
+      autotagPrefix.disabled = !aNode.checked || !autotagUsePrefix.checked;
+      break;
+    case "autotagUsePrefix":
+      options.category.prefixEnabled = aNode.checked;
+      autotagPrefix.disabled = aNode.disabled || !aNode.checked;
+      break;
+    case "autotagPrefix":
+      options.category.prefix = aNode.value;
+      break;
+  }
+
+  FeedUtils.setOptionsAcct(gServer, options)
+}

mailnews/extensions/newsblog/content/am-newsblog.xul

@@ -0,0 +1,155 @@
+<?xml version="1.0"?>
+<!-- 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/. -->
+
+<?xml-stylesheet href="chrome://messenger/skin/accountManage.css" type="text/css"?>
+<?xml-stylesheet href="chrome://messenger-newsblog/skin/feed-subscriptions.css" type="text/css"?>
+
+<!DOCTYPE page [
+<!ENTITY %         newsblogDTD SYSTEM "chrome://messenger-newsblog/locale/am-newsblog.dtd" >
+%newsblogDTD;
+<!ENTITY %             feedDTD SYSTEM "chrome://messenger-newsblog/locale/feed-subscriptions.dtd" >
+%feedDTD;
+<!ENTITY %   accountNoIdentDTD SYSTEM "chrome://messenger/locale/am-serverwithnoidentities.dtd" >
+%accountNoIdentDTD;
+<!ENTITY % accountServerTopDTD SYSTEM "chrome://messenger/locale/am-server-top.dtd">
+%accountServerTopDTD;
+]>
+
+<page xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+      class="color-dialog"
+      title="&accountTitle.label;"
+      onload="parent.onPanelLoaded('am-newsblog.xul');">
+
+  <script type="application/javascript"
+          src="chrome://messenger/content/AccountManager.js"/>
+  <script type="application/javascript"
+          src="chrome://messenger-newsblog/content/am-newsblog.js"/>
+  <script type="application/javascript"
+          src="chrome://messenger-newsblog/content/newsblogOverlay.js"/>
+  <script type="application/javascript"
+          src="chrome://messenger/content/amUtils.js"/>
+  <script type="application/javascript"
+          src="chrome://messenger/content/am-prefs.js"/>
+
+  <vbox flex="1" style="overflow: auto;">
+
+    <dialogheader id="am-newsblog-title" defaultTitle="&accountTitle.label;"/>
+
+    <description class="secDesc">&accountSettingsDesc.label;</description>
+
+    <hbox align="center">
+      <label value="&accountName.label;"
+             accesskey="&accountName.accesskey;"
+             control="server.prettyName"/>
+      <textbox id="server.prettyName"
+               wsm_persist="true"
+               size="30"
+               prefstring="mail.server.%serverkey%.name"/>
+    </hbox>
+
+    <separator class="thin"/>
+
+    <groupbox>
+      <caption label="&serverSettings.label;"/>
+
+      <checkbox id="server.loginAtStartUp"
+                wsm_persist="true"
+                label="&loginAtStartup.label;"
+                accesskey="&loginAtStartup.accesskey;"
+                prefattribute="value"
+                prefstring="mail.server.%serverkey%.login_at_startup"/>
+
+      <hbox align="center">
+        <checkbox id="server.doBiff"
+                  wsm_persist="true"
+                  label="&biffStart.label;"
+                  accesskey="&biffStart.accesskey;"
+                  oncommand="onCheckItem('server.biffMinutes', [this.id]);"
+                  prefattribute="value"
+                  prefstring="mail.server.%serverkey%.check_new_mail"/>
+        <textbox id="server.biffMinutes"
+                 wsm_persist="true"
+                 type="number"
+                 size="3"
+                 min="1"
+                 increment="1"
+                 preftype="int"
+                 prefstring="mail.server.%serverkey%.check_time"
+                 aria-labelledby="server.doBiff server.biffMinutes biffEnd"/>
+        <label id="biffEnd"
+             value="&biffEnd.label;"
+             control="server.biffMinutes"/>
+      </hbox>
+
+      <checkbox id="server.quickMode"
+                wsm_persist="true"
+                genericattr="true"
+                label="&useQuickMode.label;"
+                accesskey="&useQuickMode.accesskey;"
+                preftype="bool"
+                prefattribute="value"
+                prefstring="mail.server.%serverkey%.quickMode"/>
+
+      <checkbox id="autotagEnable"
+                accesskey="&autotagEnable.accesskey;"
+                label="&autotagEnable.label;"
+                oncommand="setCategoryPrefs(this)"/>
+      <hbox>
+          <checkbox id="autotagUsePrefix"
+                    class="indent"
+                    accesskey="&autotagUsePrefix.accesskey;"
+                    label="&autotagUsePrefix.label;"
+                    oncommand="setCategoryPrefs(this)"/>
+          <textbox id="autotagPrefix"
+                   placeholder="&autoTagPrefix.placeholder;"
+                   clickSelectsAll="true"
+                   onchange="setCategoryPrefs(this)"/>
+      </hbox>
+    </groupbox>
+
+    <separator class="thin"/>
+
+    <groupbox>
+      <caption label="&messageStorage.label;"/>
+
+      <checkbox id="server.emptyTrashOnExit"
+                wsm_persist="true"
+                label="&emptyTrashOnExit.label;"
+                accesskey="&emptyTrashOnExit.accesskey;"
+                prefattribute="value"
+                prefstring="mail.server.%serverkey%.empty_trash_on_exit"/>
+
+      <separator class="thin"/>
+
+      <vbox>
+        <label value="&localPath.label;" control="server.localPath"/>
+        <hbox align="center">
+          <textbox readonly="true"
+                   wsm_persist="true"
+                   flex="1"
+                   id="server.localPath"
+                   datatype="nsIFile"
+                   prefstring="mail.server.%serverkey%.directory"
+                   class="uri-element"/>
+          <button id="browseForLocalFolder"
+                  label="&browseFolder.label;"
+                  filepickertitle="&localFolderPicker.label;"
+                  accesskey="&browseFolder.accesskey;"
+                  oncommand="BrowseForLocalFolders();"/>
+        </hbox>
+      </vbox>
+
+    </groupbox>
+
+    <separator class="thin"/>
+
+    <hbox align="center">
+      <spacer flex="1"/>
+      <button label="&manageSubscriptions.label;"
+              accesskey="&manageSubscriptions.accesskey;"
+              oncommand="openSubscriptionsDialog(gServer.rootFolder);"/>
+    </hbox>
+  </vbox>
+</page>

mailnews/extensions/newsblog/content/feed-subscriptions.xul

@@ -0,0 +1,235 @@
+<?xml version="1.0"?>
+<!-- -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. -->
+
+<?xml-stylesheet href="chrome://messenger/skin/" type="text/css"?>
+<?xml-stylesheet href="chrome://messenger/skin/folderPane.css" type="text/css"?>
+<?xml-stylesheet href="chrome://messenger/skin/folderMenus.css" type="text/css"?>
+<?xml-stylesheet href="chrome://messenger-newsblog/skin/feed-subscriptions.css" type="text/css"?>
+
+<!DOCTYPE window [
+  <!ENTITY % feedDTD SYSTEM "chrome://messenger-newsblog/locale/feed-subscriptions.dtd">
+    %feedDTD;
+  <!ENTITY % certDTD SYSTEM "chrome://pippki/locale/certManager.dtd">
+    %certDTD;
+]>
+
+<window id="subscriptionsDialog"
+        flex="1"
+        title="&feedSubscriptions.label;"
+        windowtype="Mail:News-BlogSubscriptions"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+        xmlns:nc="http://home.netscape.com/NC-rdf#"
+        persist="width height screenX screenY sizemode"
+        onload="FeedSubscriptions.onLoad();"
+        onclose="return FeedSubscriptions.onClose();"
+        onkeypress="FeedSubscriptions.onKeyPress(event);"
+        onmousedown="FeedSubscriptions.onMouseDown(event);">
+
+  <script type="application/javascript"
+          src="chrome://messenger/content/specialTabs.js"/>
+  <script type="application/javascript"
+          src="chrome://messenger-newsblog/content/feed-subscriptions.js"/>
+
+  <keyset id="extensionsKeys">
+    <key id="key_close"
+         key="&cmd.close.commandKey;"
+         modifiers="accel"
+         oncommand="window.close();"/>
+    <key id="key_close2"
+         keycode="VK_ESCAPE"
+         oncommand="window.close();"/>
+  </keyset>
+
+  <stringbundle id="bundle_newsblog"
+                src="chrome://messenger-newsblog/locale/newsblog.properties"/>
+  <stringbundle id="bundle_brand"
+                src="chrome://branding/locale/brand.properties"/>
+
+  <vbox flex="1" id="contentPane">
+    <hbox align="right">
+      <label id="learnMore"
+             class="text-link"
+             crop="end"
+             value="&learnMore.label;"
+             href="https://support.mozilla.org/kb/how-subscribe-news-feeds-and-blogs"/>
+    </hbox>
+
+    <tree id="rssSubscriptionsList"
+          treelines="true"
+          flex="1"
+          hidecolumnpicker="true"
+          onselect="FeedSubscriptions.onSelect();"
+          seltype="single">
+      <treecols>
+        <treecol id="folderNameCol"
+                 flex="2"
+                 primary="true"
+                 hideheader="true"/>
+      </treecols>
+      <treechildren id="subscriptionChildren"
+                    ondragstart="FeedSubscriptions.onDragStart(event);"
+                    ondragover="FeedSubscriptions.onDragOver(event);"/>
+    </tree>
+
+    <hbox id="rssFeedInfoBox">
+      <vbox flex="1">
+        <grid flex="1">
+          <columns>
+            <column/>
+            <column flex="1"/>
+          </columns>
+          <rows>
+            <row>
+              <hbox align="right" valign="middle">
+                <label id="nameLabel"
+                       accesskey="&feedTitle.accesskey;"
+                       control="nameValue"
+                       value="&feedTitle.label;"/>
+              </hbox>
+              <textbox id="nameValue"
+                       clickSelectsAll="true"/>
+            </row>
+            <row>
+              <hbox align="right" valign="middle">
+                <label id="locationLabel"
+                       accesskey="&feedLocation.accesskey;"
+                       control="locationValue"
+                       value="&feedLocation.label;"/>
+              </hbox>
+              <hbox>
+                <textbox id="locationValue"
+                         flex="1"
+                         class="uri-element"
+                         placeholder="&feedLocation.placeholder;"
+                         clickSelectsAll="true"
+                         onfocus="FeedSubscriptions.setSummaryFocus();"
+                         onblur="FeedSubscriptions.setSummaryFocus();"/>
+                <hbox align="center">
+                  <label id="locationValidate"
+                         collapsed="true"
+                         class="text-link"
+                         crop="end"
+                         value="&locationValidate.label;"
+                         onclick="FeedSubscriptions.checkValidation(event);"/>
+                </hbox>
+              </hbox>
+            </row>
+            <row>
+              <hbox align="right" valign="middle">
+                <label id="feedFolderLabel"
+                       value="&feedFolder.label;"
+                       accesskey="&feedFolder.accesskey;"
+                       control="selectFolder"/>
+              </hbox>
+              <hbox>
+                <menulist id="selectFolder"
+                          flex="1"
+                          class="folderMenuItem"
+                          hidden="true">
+                  <menupopup id="selectFolderPopup"
+                             class="menulist-menupopup"
+                             type="folder"
+                             mode="feeds"
+                             showFileHereLabel="true"
+                             showAccountsFileHere="true"
+                             oncommand="FeedSubscriptions.setNewFolder(event)"/>
+                </menulist>
+                <textbox id="selectFolderValue"
+                         flex="1"
+                         readonly="true"
+                         onkeypress="FeedSubscriptions.onClickSelectFolderValue(event)"
+                         onclick="FeedSubscriptions.onClickSelectFolderValue(event)"/>
+              </hbox>
+            </row>
+          </rows>
+        </grid>
+        <checkbox id="quickMode"
+                  accesskey="&quickMode.accesskey;"
+                  label="&quickMode.label;"
+                  oncommand="FeedSubscriptions.setSummary(this.checked)"/>
+        <checkbox id="autotagEnable"
+                  accesskey="&autotagEnable.accesskey;"
+                  label="&autotagEnable.label;"
+                  oncommand="FeedSubscriptions.setCategoryPrefs(this)"/>
+        <hbox>
+            <checkbox id="autotagUsePrefix"
+                      class="indent"
+                      accesskey="&autotagUsePrefix.accesskey;"
+                      label="&autotagUsePrefix.label;"
+                      oncommand="FeedSubscriptions.setCategoryPrefs(this)"/>
+            <textbox id="autotagPrefix"
+                     placeholder="&autoTagPrefix.placeholder;"
+                     clickSelectsAll="true"/>
+        </hbox>
+        <separator class="thin"/>
+      </vbox>
+    </hbox>
+
+    <hbox id="statusContainerBox"
+          align="center"
+          valign="middle">
+      <vbox flex="1">
+        <description id="statusText"/>
+      </vbox>
+      <spacer flex="1"/>
+      <label id="validationText"
+             collapsed="true"
+             class="text-link"
+             crop="end"
+             value="&validateText.label;"
+             onclick="FeedSubscriptions.checkValidation(event);"/>
+      <button id="addCertException"
+              collapsed="true"
+              label="&certmgr.addException.label;"
+              accesskey="&certmgr.addException.accesskey;"
+              oncommand="FeedSubscriptions.addCertExceptionDialog();"/>
+      <progressmeter id="progressMeter"
+                     collapsed="true"
+                     mode="determined"
+                     value="0"/>
+    </hbox>
+
+    <hbox align="end">
+      <hbox class="actionButtons" flex="1">
+        <button id="addFeed"
+                label="&button.addFeed.label;"
+                accesskey="&button.addFeed.accesskey;"
+                oncommand="FeedSubscriptions.addFeed();"/>
+
+        <button id="editFeed"
+                disabled="true"
+                label="&button.updateFeed.label;"
+                accesskey="&button.updateFeed.accesskey;"
+                oncommand="FeedSubscriptions.editFeed();"/>
+
+        <button id="removeFeed"
+                disabled="true"
+                label="&button.removeFeed.label;"
+                accesskey="&button.removeFeed.accesskey;"
+                oncommand="FeedSubscriptions.removeFeed(true);"/>
+
+        <button id="importOPML"
+                label="&button.importOPML.label;"
+                accesskey="&button.importOPML.accesskey;"
+                oncommand="FeedSubscriptions.importOPML();"/>
+
+        <button id="exportOPML"
+                label="&button.exportOPML.label;"
+                accesskey="&button.exportOPML.accesskey;"
+                tooltiptext="&button.exportOPML.tooltip;"
+                oncommand="FeedSubscriptions.exportOPML(event);"/>
+
+        <spacer flex="1"/>
+
+        <button id="close"
+                label="&button.close.label;"
+                icon="close"
+                oncommand="if (FeedSubscriptions.onClose()) window.close();"/>
+      </hbox>
+    </hbox>
+  </vbox>
+</window>

mailnews/extensions/newsblog/content/feedAccountWizard.js

@@ -0,0 +1,45 @@
+/* -*- Mode: Java; tab-width: 4; 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/. */
+
+Components.utils.import("resource:///modules/FeedUtils.jsm");
+
+/* Feed account standalone wizard functions */
+var FeedAccountWizard = {
+  accountName: "",
+
+  accountSetupPageInit: function() {
+    this.accountSetupPageValidate();
+  },
+
+  accountSetupPageValidate: function() {
+    this.accountName = document.getElementById("prettyName").value.trim();
+    document.documentElement.canAdvance = this.accountName;
+  },
+
+  accountSetupPageUnload: function() {
+    return;
+  },
+
+  donePageInit: function() {
+    document.getElementById("account.name.text").value = this.accountName;
+  },
+
+  onCancel: function() {
+    return true;
+  },
+
+  onFinish: function() {
+    let account = FeedUtils.createRssAccount(this.accountName);
+    if ("gFolderTreeView" in window.opener.top)
+      // Opened from 3pane File->New or Appmenu New Message, or
+      // Account Central link.
+      window.opener.top.gFolderTreeView.selectFolder(account.incomingServer.rootMsgFolder);
+    else if ("selectServer" in window.opener)
+      // Opened from Account Settings.
+      window.opener.selectServer(account.incomingServer);
+
+    window.close();
+  }
+}

mailnews/extensions/newsblog/content/feedAccountWizard.xul

@@ -0,0 +1,79 @@
+<?xml version="1.0"?>
+<!-- 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/. -->
+
+<?xml-stylesheet href="chrome://messenger/skin/accountWizard.css" type="text/css"?>
+
+<!DOCTYPE wizard [
+  <!ENTITY %  accountDTD SYSTEM "chrome://messenger/locale/AccountWizard.dtd">
+  %accountDTD;
+  <!ENTITY % newsblogDTD SYSTEM "chrome://messenger-newsblog/locale/am-newsblog.dtd" >
+  %newsblogDTD;
+  <!ENTITY %       imDTD SYSTEM "chrome://messenger/locale/imAccountWizard.dtd" >
+  %imDTD;
+]>
+
+<wizard id="FeedAccountWizard"
+        title="&feedWindowTitle.label;"
+        onwizardcancel="return FeedAccountWizard.onCancel();"
+        onwizardfinish="return FeedAccountWizard.onFinish();"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script type="application/javascript"
+          src="chrome://messenger-newsblog/content/feedAccountWizard.js"/>
+
+  <!-- Account setup page : User gets a choice to enter a name for the account -->
+  <!-- Defaults : Feed account name -> default string -->
+  <wizardpage id="accountsetuppage"
+              pageid="accountsetuppage"
+              label="&accnameTitle.label;"
+              onpageshow="return FeedAccountWizard.accountSetupPageInit();"
+              onpageadvanced="return FeedAccountWizard.accountSetupPageUnload();">
+    <vbox flex="1">
+      <description>&accnameDesc.label;</description>
+      <separator class="thin"/>
+      <hbox align="center">
+        <label class="label"
+               value="&accnameLabel.label;"
+               accesskey="&accnameLabel.accesskey;"
+               control="prettyName"/>
+        <textbox id="prettyName"
+                 flex="1"
+                 value="&feeds.accountName;"
+                 oninput="FeedAccountWizard.accountSetupPageValidate();"/>
+      </hbox>
+    </vbox>
+  </wizardpage>
+
+  <!-- Done page : Summarizes information collected to create a feed account -->
+  <wizardpage id="done"
+              pageid="done"
+              label="&accountSummaryTitle.label;"
+              onpageshow="return FeedAccountWizard.donePageInit();">
+    <vbox flex="1">
+      <description>&accountSummaryInfo.label;</description>
+      <separator class="thin"/>
+      <grid>
+        <columns>
+          <column/>
+          <column flex="1"/>
+        </columns>
+        <rows>
+          <row id="account.name"
+               align="center">
+            <label id="account.name.label"
+                   class="label"
+                   flex="1"
+                   value="&accnameLabel.label;"/>
+            <label id="account.name.text"
+                   class="label"/>
+          </row>
+        </rows>
+      </grid>
+      <separator/>
+      <spacer flex="1"/>
+    </vbox>
+  </wizardpage>
+
+</wizard>

mailnews/extensions/newsblog/content/newsblogOverlay.js

@@ -0,0 +1,363 @@
+/* -*- Mode: JavaScript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+Components.utils.import("resource:///modules/gloda/mimemsg.js");
+Components.utils.import("resource:///modules/mailServices.js");
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+// This global is for SeaMonkey compatibility.
+var gShowFeedSummary;
+
+var FeedMessageHandler = {
+  gShowSummary: true,
+  gToggle: false,
+  kSelectOverrideWebPage:   0,
+  kSelectOverrideSummary:   1,
+  kSelectFeedDefault:       2,
+  kOpenWebPage:             0,
+  kOpenSummary:             1,
+  kOpenToggleInMessagePane: 2,
+  kOpenLoadInBrowser:       3,
+
+  /**
+   * How to load message on threadpane select.
+   */
+  get onSelectPref() {
+    return Services.prefs.getIntPref("rss.show.summary");
+  },
+
+  set onSelectPref(val) {
+    Services.prefs.setIntPref("rss.show.summary", val);
+    ReloadMessage();
+  },
+
+  /**
+   * Load web page on threadpane select.
+   */
+  get loadWebPageOnSelectPref() {
+    return Services.prefs.getIntPref("rss.message.loadWebPageOnSelect") ? true : false;
+  },
+
+  /**
+   * How to load message on open (enter/dbl click in threadpane, contextmenu).
+   */
+  get onOpenPref() {
+    return Services.prefs.getIntPref("rss.show.content-base");
+  },
+
+  set onOpenPref(val) {
+    Services.prefs.setIntPref("rss.show.content-base", val);
+  },
+
+  /**
+   * Determine if a message is a feed message. Prior to Tb15, a message had to
+   * be in an rss acount type folder. In Tb15 and later, a flag is set on the
+   * message itself upon initial store; the message can be moved to any folder.
+   *
+   * @param nsIMsgDBHdr aMsgHdr - the message.
+   *
+   * @return true if message is a feed, false if not.
+   */
+  isFeedMessage: function(aMsgHdr) {
+    return (aMsgHdr instanceof Components.interfaces.nsIMsgDBHdr) &&
+           ((aMsgHdr.flags & Components.interfaces.nsMsgMessageFlags.FeedMsg) ||
+            (aMsgHdr.folder && aMsgHdr.folder.server.type == "rss"));
+  },
+
+  /**
+   * Determine whether to show a feed message summary or load a web page in the
+   * message pane.
+   *
+   * @param nsIMsgDBHdr aMsgHdr - the message.
+   * @param bool aToggle        - true if in toggle mode, false otherwise.
+   *
+   * @return true if summary is to be displayed, false if web page.
+   */
+  shouldShowSummary: function(aMsgHdr, aToggle) {
+    // Not a feed message, always show summary (the message).
+    if (!this.isFeedMessage(aMsgHdr))
+      return true;
+
+    // Notified of a summary reload when toggling, reset toggle and return.
+    if (!aToggle && this.gToggle)
+      return !(this.gToggle = false);
+
+    let showSummary = true;
+    this.gToggle = aToggle;
+
+    // Thunderbird 2 rss messages with 'Show article summary' not selected,
+    // ie message body constructed to show web page in an iframe, can't show
+    // a summary - notify user.
+    let browser = getBrowser();
+    let contentDoc = browser ? browser.contentDocument : null;
+    let rssIframe = contentDoc ? contentDoc.getElementById("_mailrssiframe") : null;
+    if (rssIframe) {
+      if (this.gToggle || this.onSelectPref == this.kSelectOverrideSummary)
+        this.gToggle = false;
+      return false;
+    }
+
+    if (aToggle)
+      // Toggle mode, flip value.
+      return gShowFeedSummary = this.gShowSummary = !this.gShowSummary;
+
+    let wintype = document.documentElement.getAttribute("windowtype");
+    let tabMail = document.getElementById("tabmail");
+    let messageTab = tabMail && tabMail.currentTabInfo.mode.type == "message";
+    let messageWindow = wintype == "mail:messageWindow";
+
+    switch (this.onSelectPref) {
+      case this.kSelectOverrideWebPage:
+        showSummary = false;
+        break;
+      case this.kSelectOverrideSummary:
+        showSummary = true
+        break;
+      case this.kSelectFeedDefault:
+        // Get quickmode per feed folder pref from feeds.rdf. If the feed
+        // message is not in a feed account folder (hence the folder is not in
+        // the feeds database), or FZ_QUICKMODE property is not found (possible
+        // in pre renovation urls), err on the side of showing the summary.
+        // For the former, toggle or global override is necessary; for the
+        // latter, a show summary checkbox toggle in Subscribe dialog will set
+        // one on the path to bliss.
+        let folder = aMsgHdr.folder, targetRes;
+        try {
+          targetRes = FeedUtils.getParentTargetForChildResource(
+                        folder.URI, FeedUtils.FZ_QUICKMODE, folder.server);
+        }
+        catch (ex) {
+          // Not in a feed account folder or other error.
+          FeedUtils.log.info("FeedMessageHandler.shouldShowSummary: could not " +
+                             "get summary pref for this folder");
+        }
+
+        showSummary = targetRes && targetRes.QueryInterface(Ci.nsIRDFLiteral).
+                                             Value == "false" ? false : true;
+        break;
+    }
+
+    gShowFeedSummary = this.gShowSummary = showSummary;
+
+    if (messageWindow || messageTab) {
+      // Message opened in either standalone window or tab, due to either
+      // message open pref (we are here only if the pref is 0 or 1) or
+      // contextmenu open.
+      switch (this.onOpenPref) {
+        case this.kOpenToggleInMessagePane:
+          // Opened by contextmenu, use the value derived above.
+          // XXX: allow a toggle via crtl?
+          break;
+        case this.kOpenWebPage:
+          showSummary = false;
+          break;
+        case this.kOpenSummary:
+          showSummary = true;
+          break;
+      }
+    }
+
+    // Auto load web page in browser on select, per pref; shouldShowSummary() is
+    // always called first to 1)test if feed, 2)get summary pref, so do it here.
+    if (this.loadWebPageOnSelectPref)
+      setTimeout(FeedMessageHandler.loadWebPage, 20, aMsgHdr, {browser:true});
+
+    return showSummary;
+  },
+
+  /**
+   * Load a web page for feed messages. Use MsgHdrToMimeMessage() to get
+   * the content-base url from the message headers. We cannot rely on
+   * currentHeaderData; it has not yet been streamed at our entry point in
+   * displayMessageChanged(), and in the case of a collapsed message pane it
+   * is not streamed.
+   *
+   * @param nsIMsgDBHdr aMessageHdr - the message.
+   * @param {obj} aWhere            - name value=true pair, where name is in:
+   *                                  'messagepane', 'browser', 'tab', 'window'.
+   */
+  loadWebPage: function(aMessageHdr, aWhere) {
+    MsgHdrToMimeMessage(aMessageHdr, null, function(aMsgHdr, aMimeMsg) {
+      if (aMimeMsg && aMimeMsg.headers["content-base"] &&
+          aMimeMsg.headers["content-base"][0]) {
+        let url = aMimeMsg.headers["content-base"], uri;
+        try {
+          let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
+                            .createInstance(Ci.nsIScriptableUnicodeConverter);
+          converter.charset = "UTF-8";
+          url = converter.ConvertToUnicode(url);
+          uri = Services.io.newURI(url, null, null);
+          url = uri.spec;
+        }
+        catch (ex) {
+          FeedUtils.log.info("FeedMessageHandler.loadWebPage: " +
+                             "invalid Content-Base header url - " + url);
+          return;
+        }
+        if (aWhere.browser)
+          Components.classes["@mozilla.org/uriloader/external-protocol-service;1"]
+                    .getService(Components.interfaces.nsIExternalProtocolService)
+                    .loadURI(uri);
+        else if (aWhere.messagepane) {
+          let loadFlag = getBrowser().webNavigation.LOAD_FLAGS_NONE;
+          getBrowser().webNavigation.loadURI(url, loadFlag, null, null, null);
+        }
+        else if (aWhere.tab)
+          openContentTab(url, "tab", "^");
+        else if (aWhere.window)
+          openContentTab(url, "window", "^");
+      }
+      else
+        FeedUtils.log.info("FeedMessageHandler.loadWebPage: could not get " +
+                           "Content-Base header url for this message");
+    });
+  },
+
+  /**
+   * Display summary or load web page for feed messages. Caller should already
+   * know if the message is a feed message.
+   *
+   * @param nsIMsgDBHdr aMsgHdr - the message.
+   * @param bool aShowSummary   - true if summary is to be displayed, false if
+   *                              web page.
+   */
+  setContent: function(aMsgHdr, aShowSummary) {
+    if (aShowSummary) {
+      // Only here if toggling to summary in 3pane.
+      if (this.gToggle && gDBView && GetNumSelectedMessages() == 1)
+        ReloadMessage();
+    }
+    else {
+      let browser = getBrowser();
+      if (browser && browser.contentDocument && browser.contentDocument.body)
+        browser.contentDocument.body.hidden = true;
+      // If in a non rss folder, hide possible remote content bar on a web
+      // page load, as it doesn't apply.
+      if ("msgNotificationBar" in window)
+        gMessageNotificationBar.clearMsgNotifications();
+
+      this.loadWebPage(aMsgHdr, {messagepane:true});
+      this.gToggle = false;
+    }
+  }
+}
+
+function openSubscriptionsDialog(aFolder)
+{
+  // Check for an existing feed subscriptions window and focus it.
+  let subscriptionsWindow =
+    Services.wm.getMostRecentWindow("Mail:News-BlogSubscriptions");
+
+  if (subscriptionsWindow)
+  {
+    if (aFolder)
+    {
+      subscriptionsWindow.FeedSubscriptions.selectFolder(aFolder);
+      subscriptionsWindow.FeedSubscriptions.mView.treeBox.ensureRowIsVisible(
+        subscriptionsWindow.FeedSubscriptions.mView.selection.currentIndex);
+    }
+
+    subscriptionsWindow.focus();
+  }
+  else
+  {
+    window.openDialog("chrome://messenger-newsblog/content/feed-subscriptions.xul",
+                      "", "centerscreen,chrome,dialog=no,resizable",
+                      { folder: aFolder});
+  }
+}
+
+// Special case attempts to reply/forward/edit as new RSS articles. For
+// messages stored prior to Tb15, we are here only if the message's folder's
+// account server is rss and feed messages moved to other types will have their
+// summaries loaded, as viewing web pages only happened in an rss account.
+// The user may choose whether to load a summary or web page link by ensuring
+// the current feed message is being viewed as either a summary or web page.
+function openComposeWindowForRSSArticle(aMsgComposeWindow, aMsgHdr, aMessageUri,
+                                        aType, aFormat, aIdentity, aMsgWindow)
+{
+  // Ensure right content is handled for web pages in window/tab.
+  let tabmail = document.getElementById("tabmail");
+  let is3pane = tabmail && tabmail.selectedTab && tabmail.selectedTab.mode ?
+                  tabmail.selectedTab.mode.type == "folder" : false;
+  let showingwebpage = ("FeedMessageHandler" in window) && !is3pane &&
+                       FeedMessageHandler.onOpenPref == FeedMessageHandler.kOpenWebPage;
+
+  if (gShowFeedSummary && !showingwebpage)
+  {
+    // The user is viewing the summary.
+    MailServices.compose.OpenComposeWindow(aMsgComposeWindow, aMsgHdr, aMessageUri,
+                                           aType, aFormat, aIdentity, aMsgWindow);
+
+  }
+  else
+  {
+    // Set up the compose message and get the feed message's web page link.
+    let Cc = Components.classes;
+    let Ci = Components.interfaces;
+    let msgHdr = aMsgHdr;
+    let type = aType;
+    let msgComposeType = Ci.nsIMsgCompType;
+    let subject = msgHdr.mime2DecodedSubject;
+    let fwdPrefix = Services.prefs.getCharPref("mail.forward_subject_prefix");
+    fwdPrefix = fwdPrefix ? fwdPrefix + ": " : "";
+
+    let params = Cc["@mozilla.org/messengercompose/composeparams;1"]
+                   .createInstance(Ci.nsIMsgComposeParams);
+
+    let composeFields = Cc["@mozilla.org/messengercompose/composefields;1"]
+                          .createInstance(Ci.nsIMsgCompFields);
+
+    if (type == msgComposeType.Reply ||
+        type == msgComposeType.ReplyAll ||
+        type == msgComposeType.ReplyToSender ||
+        type == msgComposeType.ReplyToGroup ||
+        type == msgComposeType.ReplyToSenderAndGroup)
+    {
+      subject = "Re: " + subject;
+    }
+    else if (type == msgComposeType.ForwardInline ||
+             type == msgComposeType.ForwardAsAttachment)
+    {
+      subject = fwdPrefix + subject;
+    }
+
+    params.composeFields = composeFields;
+    params.composeFields.subject = subject;
+    params.composeFields.characterSet = msgHdr.Charset;
+    params.composeFields.body = "";
+    params.bodyIsLink = false;
+    params.identity = aIdentity;
+
+    try
+    {
+      // The feed's web page url is stored in the Content-Base header.
+      MsgHdrToMimeMessage(msgHdr, null, function(aMsgHdr, aMimeMsg) {
+        if (aMimeMsg && aMimeMsg.headers["content-base"] &&
+            aMimeMsg.headers["content-base"][0])
+        {
+          let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
+                            .createInstance(Ci.nsIScriptableUnicodeConverter);
+          converter.charset = "UTF-8";
+          let url = converter.ConvertToUnicode(aMimeMsg.headers["content-base"]);
+          params.composeFields.body = url;
+          params.bodyIsLink = true;
+          MailServices.compose.OpenComposeWindowWithParams(null, params);
+        }
+        else
+          // No content-base url, use the summary.
+          MailServices.compose.OpenComposeWindow(aMsgComposeWindow, aMsgHdr, aMessageUri,
+                                                 aType, aFormat, aIdentity, aMsgWindow);
+
+      }, false, {saneBodySize: true});
+    }
+    catch (ex)
+    {
+      // Error getting header, use the summary.
+      MailServices.compose.OpenComposeWindow(aMsgComposeWindow, aMsgHdr, aMessageUri,
+                                             aType, aFormat, aIdentity, aMsgWindow);
+    }
+  }
+}

mailnews/extensions/newsblog/jar.mn

@@ -0,0 +1,16 @@
+# 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/.
+
+newsblog.jar:
+% content messenger-newsblog %content/messenger-newsblog/
+   content/messenger-newsblog/newsblogOverlay.js                (content/newsblogOverlay.js)
+   content/messenger-newsblog/Feed.js                           (content/Feed.js)
+   content/messenger-newsblog/FeedItem.js                       (content/FeedItem.js)
+   content/messenger-newsblog/feed-parser.js                    (content/feed-parser.js)
+*  content/messenger-newsblog/feed-subscriptions.js             (content/feed-subscriptions.js)
+   content/messenger-newsblog/feed-subscriptions.xul            (content/feed-subscriptions.xul)
+   content/messenger-newsblog/am-newsblog.js                    (content/am-newsblog.js)
+   content/messenger-newsblog/am-newsblog.xul                   (content/am-newsblog.xul)
+   content/messenger-newsblog/feedAccountWizard.js              (content/feedAccountWizard.js)
+   content/messenger-newsblog/feedAccountWizard.xul             (content/feedAccountWizard.xul)

mailnews/extensions/newsblog/js/newsblog.js

@@ -0,0 +1,99 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+var {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
+
+Cu.import("resource:///modules/FeedUtils.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+var nsNewsBlogFeedDownloader =
+{
+  downloadFeed: function(aFolder, aUrlListener, aIsBiff, aMsgWindow)
+  {
+    FeedUtils.downloadFeed(aFolder, aUrlListener, aIsBiff, aMsgWindow);
+  },
+
+  subscribeToFeed: function(aUrl, aFolder, aMsgWindow)
+  {
+    FeedUtils.subscribeToFeed(aUrl, aFolder, aMsgWindow);
+  },
+
+  updateSubscriptionsDS: function(aFolder, aOrigFolder, aAction)
+  {
+    FeedUtils.updateSubscriptionsDS(aFolder, aOrigFolder, aAction);
+  },
+
+  QueryInterface: function(aIID)
+  {
+    if (aIID.equals(Ci.nsINewsBlogFeedDownloader) ||
+        aIID.equals(Ci.nsISupports))
+      return this;
+
+    throw Cr.NS_ERROR_NO_INTERFACE;
+  }
+}
+
+var nsNewsBlogAcctMgrExtension =
+{
+  name: "newsblog",
+  chromePackageName: "messenger-newsblog",
+  showPanel: function (server)
+  {
+    return false;
+  },
+  QueryInterface: function(aIID)
+  {
+    if (aIID.equals(Ci.nsIMsgAccountManagerExtension) ||
+        aIID.equals(Ci.nsISupports))
+      return this;
+
+    throw Cr.NS_ERROR_NO_INTERFACE;
+  }
+}
+
+function FeedDownloader() {}
+
+FeedDownloader.prototype =
+{
+  classID: Components.ID("{5c124537-adca-4456-b2b5-641ab687d1f6}"),
+  _xpcom_factory:
+  {
+    createInstance: function (aOuter, aIID)
+    {
+      if (aOuter != null)
+        throw Cr.NS_ERROR_NO_AGGREGATION;
+      if (!aIID.equals(Ci.nsINewsBlogFeedDownloader) &&
+          !aIID.equals(Ci.nsISupports))
+        throw Cr.NS_ERROR_INVALID_ARG;
+
+      // return the singleton
+      return nsNewsBlogFeedDownloader.QueryInterface(aIID);
+    }
+  } // factory
+}; // feed downloader
+
+function AcctMgrExtension() {}
+
+AcctMgrExtension.prototype =
+{
+  classID: Components.ID("{E109C05F-D304-4ca5-8C44-6DE1BFAF1F74}"),
+  _xpcom_factory:
+  {
+    createInstance: function (aOuter, aIID)
+    {
+      if (aOuter != null)
+        throw Cr.NS_ERROR_NO_AGGREGATION;
+      if (!aIID.equals(Ci.nsIMsgAccountManagerExtension) &&
+          !aIID.equals(Ci.nsISupports))
+        throw Cr.NS_ERROR_INVALID_ARG;
+
+      // return the singleton
+      return nsNewsBlogAcctMgrExtension.QueryInterface(aIID);
+    }
+  } // factory
+}; // account manager extension
+
+var components = [FeedDownloader, AcctMgrExtension];
+var NSGetFactory = XPCOMUtils.generateNSGetFactory(components);

mailnews/extensions/newsblog/js/newsblog.manifest

@@ -0,0 +1,5 @@
+component {5c124537-adca-4456-b2b5-641ab687d1f6} newsblog.js
+contract @mozilla.org/newsblog-feed-downloader;1 {5c124537-adca-4456-b2b5-641ab687d1f6}
+component {E109C05F-D304-4ca5-8C44-6DE1BFAF1F74} newsblog.js
+contract @mozilla.org/accountmanager/extension;1?name=newsblog {E109C05F-D304-4ca5-8C44-6DE1BFAF1F74}
+category mailnews-accountmanager-extensions newsblog @mozilla.org/accountmanager/extension;1?name=newsblog

mailnews/extensions/newsblog/moz.build

@@ -0,0 +1,18 @@
+# vim: set filetype=python:
+# 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/.
+
+EXTRA_COMPONENTS += [
+    'js/newsblog.js',
+    'js/newsblog.manifest',
+]
+
+EXTRA_JS_MODULES += [
+    'content/FeedUtils.jsm',
+]
+JAR_MANIFESTS += ['jar.mn']
+
+FINAL_TARGET_FILES.isp += [
+    'rss.rdf',
+]

mailnews/extensions/newsblog/rss.rdf

@@ -0,0 +1,43 @@
+<?xml version="1.0"?>
+<!-- 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/. -->
+
+<!DOCTYPE RDF SYSTEM "chrome://messenger-newsblog/locale/am-newsblog.dtd">  
+<RDF:RDF
+    xmlns:NC="http://home.netscape.com/NC-rdf#"
+    xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
+  <RDF:Description about="NC:ispinfo">
+    <NC:providers>
+      <NC:nsIMsgAccount about="newsblog">
+
+        <!-- server info -->
+        <NC:incomingServer>
+          <NC:nsIMsgIncomingServer>
+            <NC:hostName>Feeds</NC:hostName>
+            <NC:type>rss</NC:type>
+            <NC:biffMinutes>100</NC:biffMinutes>
+            <NC:username>nobody</NC:username>
+          </NC:nsIMsgIncomingServer>
+        </NC:incomingServer>
+
+        <!-- identity defaults -->
+        <NC:identity>
+          <NC:nsIMsgIdentity>
+          </NC:nsIMsgIdentity>
+        </NC:identity>
+
+        <NC:wizardAutoGenerateUniqueHostname>true</NC:wizardAutoGenerateUniqueHostname>
+        <NC:wizardHideIncoming>true</NC:wizardHideIncoming>
+        <NC:wizardAccountName>&feeds.accountName;</NC:wizardAccountName>
+        <NC:wizardSkipPanels>identitypage,incomingpage,outgoingpage</NC:wizardSkipPanels>
+        <NC:wizardShortName>&feeds.wizardShortName;</NC:wizardShortName>
+        <NC:wizardLongName>&feeds.wizardLongName;</NC:wizardLongName>
+        <NC:wizardLongNameAccesskey>&feeds.wizardLongName.accesskey;</NC:wizardLongNameAccesskey>
+        <NC:wizardShow>true</NC:wizardShow>
+        <NC:emailProviderName>RSS</NC:emailProviderName>
+        <NC:showServerDetailsOnWizardSummary>false</NC:showServerDetailsOnWizardSummary> 
+      </NC:nsIMsgAccount>
+    </NC:providers>
+  </RDF:Description>
+</RDF:RDF>