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

1 files changed, 2703 insertions, 0 deletions

diff --git a/mailnews/extensions/newsblog/content/feed-subscriptions.js b/mailnews/extensions/newsblog/content/feed-subscriptions.js
new file mode 100644
index 000000000..2b77e60c4
--- /dev/null
+++ b/mailnews/extensions/newsblog/content/feed-subscriptions.js
@@ -0,0 +1,2703 @@
+/* -*- 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");
+Components.utils.import("resource:///modules/gloda/log4moz.js");
+Components.utils.import("resource:///modules/mailServices.js");
+Components.utils.import("resource://gre/modules/FileUtils.jsm");
+Components.utils.import("resource://gre/modules/PluralForm.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+var {classes: Cc, interfaces: Ci} = Components;
+
+var FeedSubscriptions = {
+  get mMainWin() { return Services.wm.getMostRecentWindow("mail:3pane"); },
+
+  get mTree() { return document.getElementById("rssSubscriptionsList"); },
+
+  mFeedContainers: [],
+  mRSSServer     : null,
+  mActionMode    : null,
+  kSubscribeMode : 1,
+  kUpdateMode    : 2,
+  kMoveMode      : 3,
+  kCopyMode      : 4,
+  kImportingOPML : 5,
+  kVerifyUrlMode : 6,
+
+  get FOLDER_ACTIONS()
+  {
+    return Ci.nsIMsgFolderNotificationService.folderAdded |
+           Ci.nsIMsgFolderNotificationService.folderDeleted |
+           Ci.nsIMsgFolderNotificationService.folderRenamed |
+           Ci.nsIMsgFolderNotificationService.folderMoveCopyCompleted;
+  },
+
+  onLoad: function ()
+  {
+    // Extract the folder argument.
+    let folder;
+    if (window.arguments && window.arguments[0].folder)
+      folder = window.arguments[0].folder;
+
+    // Ensure dialog is fully loaded before selecting, to get visible row.
+    setTimeout(function() {
+      FeedSubscriptions.refreshSubscriptionView(folder)
+    }, 100);
+    let message = FeedUtils.strings.GetStringFromName("subscribe-loading");
+    this.updateStatusItem("statusText", message);
+
+    FeedUtils.CANCEL_REQUESTED = false;
+
+    if (this.mMainWin)
+    {
+      this.mMainWin.FeedFolderNotificationService = MailServices.mfn;
+      this.mMainWin.FeedFolderNotificationService
+                   .addListener(this.FolderListener, this.FOLDER_ACTIONS);
+    }
+  },
+
+  onClose: function ()
+  {
+    let dismissDialog = true;
+
+    // If we are in the middle of subscribing to a feed, inform the user that
+    // dismissing the dialog right now will abort the feed subscription.
+    if (this.mActionMode == this.kSubscribeMode)
+    {
+      let pTitle = FeedUtils.strings.GetStringFromName(
+                     "subscribe-cancelSubscriptionTitle");
+      let pMessage = FeedUtils.strings.GetStringFromName(
+                       "subscribe-cancelSubscription");
+      dismissDialog =
+        !(Services.prompt.confirmEx(window, pTitle, pMessage,
+                                    Ci.nsIPromptService.STD_YES_NO_BUTTONS,
+                                    null, null, null, null, { }));
+    }
+
+    if (dismissDialog)
+    {
+      FeedUtils.CANCEL_REQUESTED = this.mActionMode == this.kSubscribeMode;
+      if (this.mMainWin)
+      {
+        this.mMainWin.FeedFolderNotificationService
+                     .removeListener(this.FolderListener, this.FOLDER_ACTIONS);
+        delete this.mMainWin.FeedFolderNotificationService;
+      }
+    }
+
+    return dismissDialog;
+  },
+
+  refreshSubscriptionView: function(aSelectFolder, aSelectFeedUrl)
+  {
+    let item = this.mView.currentItem;
+    this.loadSubscriptions();
+    this.mTree.view = this.mView;
+
+    if (aSelectFolder && !aSelectFeedUrl)
+      this.selectFolder(aSelectFolder);
+    else
+    {
+      // If no folder to select, try to select the pre rebuild selection, in
+      // an existing window.  For folderpane changes in a feed account.
+      if (item)
+      {
+        let rootFolder = item.container ? item.folder.rootFolder :
+                                          item.parentFolder.rootFolder;
+        if (item.container)
+        {
+          if (!this.selectFolder(item.folder, { open: item.open }))
+            // The item no longer exists, an ancestor folder was deleted or
+            // renamed/moved.
+            this.selectFolder(rootFolder);
+        }
+        else {
+          let url = item.parentFolder == aSelectFolder ? aSelectFeedUrl :
+                                                         item.url;
+          this.selectFeed({ folder: rootFolder, url: url }, null);
+        }
+      }
+    }
+
+    this.mView.treeBox.ensureRowIsVisible(this.mView.selection.currentIndex);
+    this.clearStatusInfo();
+  },
+
+  mView:
+  {
+    kRowIndexUndefined: -1,
+
+    get currentItem() {
+      // Get the current selection, if any.
+      let seln = this.selection;
+      let currentSelectionIndex = seln ? seln.currentIndex : null;
+      let item;
+      if (currentSelectionIndex != null)
+        item = this.getItemAtIndex(currentSelectionIndex);
+
+      return item;
+    },
+
+    /* nsITreeView */
+    treeBox: null,
+
+    mRowCount: 0,
+    get rowCount()                         { return this.mRowCount; },
+
+    _selection: null,
+    get selection ()                       { return this._selection; },
+    set selection (val)                    { return this._selection = val; },
+
+    setTree: function(aTreebox)            { this.treeBox = aTreebox; },
+    isSeparator: function(aRow)            { return false; },
+    isSorted: function()                   { return false; },
+    isSelectable: function(aRow, aColumn)  { return false; },
+    isEditable: function (aRow, aColumn)   { return false; },
+
+    getProgressMode : function(aRow, aCol) {},
+    cycleHeader: function(aCol)            {},
+    cycleCell: function(aRow, aCol)        {},
+    selectionChanged: function()           {},
+    performAction: function(aAction)       {},
+    performActionOnRow: function (aAction, aRow)       {},
+    performActionOnCell: function(aAction, aRow, aCol) {},
+    getRowProperties: function(aRow)                   { return ""; },
+    getColumnProperties: function(aCol)                { return ""; },
+    getCellValue: function (aRow, aColumn)             {},
+    setCellValue: function (aRow, aColumn, aValue)     {},
+    setCellText: function (aRow, aColumn, aValue)      {},
+
+    getCellProperties: function (aRow, aColumn) {
+      let item = this.getItemAtIndex(aRow);
+      let folder = item && item.folder ? item.folder : null;
+#ifdef MOZ_THUNDERBIRD
+      let properties = ["folderNameCol"];
+      let hasFeeds = folder ? FeedUtils.getFeedUrlsInFolder(folder) : false;
+      let prop = !folder ? "isFeed-true" :
+                 hasFeeds ? "isFeedFolder-true" :
+                 folder.isServer ? "serverType-rss isServer-true" : null;
+      if (prop)
+        properties.push(prop);
+      return properties.join(" ");
+#else
+      return !folder ? "serverType-rss" :
+             folder.isServer ? "serverType-rss isServer-true" : "livemark";
+#endif
+    },
+
+    isContainer: function (aRow)
+    {
+      let item = this.getItemAtIndex(aRow);
+      return item ? item.container : false;
+    },
+
+    isContainerOpen: function (aRow)
+    { 
+      let item = this.getItemAtIndex(aRow);
+      return item ? item.open : false;
+    },
+
+    isContainerEmpty: function (aRow)
+    { 
+      let item = this.getItemAtIndex(aRow);
+      if (!item) 
+        return false;
+
+      return item.children.length == 0;
+    },
+
+    getItemAtIndex: function (aRow)
+    {
+      if (aRow < 0 || aRow >= FeedSubscriptions.mFeedContainers.length)
+        return null;
+
+      return FeedSubscriptions.mFeedContainers[aRow];
+    },
+
+    getItemInViewIndex: function(aFolder)
+    {
+      if (!aFolder || !(aFolder instanceof Ci.nsIMsgFolder))
+        return null;
+
+      for (let index = 0; index < this.rowCount; index++)
+      {
+        // Find the visible folder in the view.
+        let item = this.getItemAtIndex(index);
+        if (item && item.container && item.url == aFolder.URI)
+          return index;
+      }
+
+      return null;
+    },
+
+    removeItemAtIndex: function (aRow, aNoSelect)
+    {
+      let itemToRemove = this.getItemAtIndex(aRow);
+      if (!itemToRemove)
+        return;
+
+      if (itemToRemove.container && itemToRemove.open)
+        // Close it, if open container.
+        this.toggleOpenState(aRow);
+
+      let parentIndex = this.getParentIndex(aRow);
+      let hasNextSibling = this.hasNextSibling(aRow, aRow);
+      if (parentIndex != this.kRowIndexUndefined)
+      {
+        let parent = this.getItemAtIndex(parentIndex);
+        if (parent)
+        {
+          for (let index = 0; index < parent.children.length; index++)
+            if (parent.children[index] == itemToRemove)
+            {
+              parent.children.splice(index, 1);
+              break;
+            }
+        }
+      }
+
+      // Now remove it from our view.
+      FeedSubscriptions.mFeedContainers.splice(aRow, 1);
+
+      // Now invalidate the correct tree rows.
+      this.mRowCount--;
+      this.treeBox.rowCountChanged(aRow, -1);
+
+      // Now update the selection position, unless noSelect (selection is
+      // done later or not at all).  If the item is the last child, select the
+      // parent.  Otherwise select the next sibling.
+      if (!aNoSelect) {
+        if (aRow <= FeedSubscriptions.mFeedContainers.length)
+          this.selection.select(hasNextSibling ? aRow : aRow - 1);
+        else
+          this.selection.clearSelection();
+      }
+
+      // Now refocus the tree.
+      FeedSubscriptions.mTree.focus();
+    },
+
+    getCellText: function (aRow, aColumn)
+    {
+      let item = this.getItemAtIndex(aRow);
+      return (item && aColumn.id == "folderNameCol") ? item.name : "";
+    },
+
+    getImageSrc: function(aRow, aCol)
+    {
+      let item = this.getItemAtIndex(aRow);
+      if ((item.folder && item.folder.isServer) || item.open)
+        return "";
+
+      if (item.favicon != null)
+        return item.favicon;
+
+      if (item.folder && FeedSubscriptions.mMainWin &&
+          "gFolderTreeView" in FeedSubscriptions.mMainWin) {
+        let favicon = FeedSubscriptions.mMainWin.gFolderTreeView
+                                       .getFolderCacheProperty(item.folder, "favicon");
+        if (favicon != null)
+          return item.favicon = favicon;
+      }
+
+      let callback = (iconUrl => {
+        item.favicon = iconUrl;
+        if (item.folder)
+        {
+          for (let child of item.children)
+            if (!child.container)
+            {
+              child.favicon = iconUrl;
+              break;
+            }
+        }
+
+        this.selection.tree.invalidateRow(aRow);
+      });
+
+      // A closed non server folder.
+      if (item.folder)
+      {
+        for (let child of item.children)
+        {
+          if (!child.container) {
+            if (child.favicon != null)
+              return child.favicon;
+
+            setTimeout(() => {
+              FeedUtils.getFavicon(child.parentFolder, child.url, null,
+                                   window, callback);
+            }, 0);
+            break;
+          }
+        }
+      }
+      else
+      {
+        // A feed.
+        setTimeout(() => {
+          FeedUtils.getFavicon(item.parentFolder, item.url, null,
+                               window, callback);
+        }, 0);
+      }
+
+      // Store empty string to return default while favicons are retrieved.
+      return item.favicon = "";
+    },
+
+    canDrop: function (aRow, aOrientation)
+    { 
+      let dropResult = this.extractDragData(aRow);
+      return aOrientation == Ci.nsITreeView.DROP_ON && dropResult.canDrop &&
+             (dropResult.dropUrl || dropResult.dropOnIndex != this.kRowIndexUndefined);
+    },
+
+    drop: function (aRow, aOrientation)
+    {
+      let win = FeedSubscriptions;
+      let results = this.extractDragData(aRow);
+      if (!results.canDrop)
+        return;
+
+      // Preselect the drop folder.
+      this.selection.select(aRow);
+
+      if (results.dropUrl)
+      {
+        // Don't freeze the app that initiated the drop just because we are
+        // in a loop waiting for the user to dimisss the add feed dialog.
+        setTimeout(function() {
+          win.addFeed(results.dropUrl, null, true, null, win.kSubscribeMode);
+        }, 0);
+        let folderItem = this.getItemAtIndex(aRow);
+        FeedUtils.log.debug("drop: folder, url - " +
+                            folderItem.folder.name + ", " + results.dropUrl);
+      }
+      else if (results.dropOnIndex != this.kRowIndexUndefined)
+      {
+        win.moveCopyFeed(results.dropOnIndex, aRow, results.dropEffect);
+      }
+    },
+
+    // Helper function for drag and drop.
+    extractDragData: function(aRow)
+    {
+      let dt = this._currentDataTransfer;
+      let dragDataResults = { canDrop:     false,
+                              dropUrl:     null,
+                              dropOnIndex: this.kRowIndexUndefined,
+                              dropEffect:  dt.dropEffect };
+
+      if (dt.getData("text/x-moz-feed-index"))
+      {
+        // Dragging a feed in the tree.
+        if (this.selection)
+        {
+          dragDataResults.dropOnIndex = this.selection.currentIndex;
+
+          let curItem = this.getItemAtIndex(this.selection.currentIndex);
+          let newItem = this.getItemAtIndex(aRow);
+          let curServer = curItem && curItem.parentFolder ?
+                            curItem.parentFolder.server : null;
+          let newServer = newItem && newItem.folder ?
+                            newItem.folder.server : null;
+
+          // No copying within the same account and no moving to the account
+          // folder in the same account.
+          if (!(curServer == newServer &&
+                (dragDataResults.dropEffect == "copy" ||
+                 newItem.folder == curItem.parentFolder ||
+                 newItem.folder.isServer)))
+            dragDataResults.canDrop = true;
+        }
+      }
+      else
+      {
+        // Try to get a feed url.
+        let validUri = FeedUtils.getFeedUriFromDataTransfer(dt);
+
+        if (validUri)
+        {
+          dragDataResults.canDrop = true;
+          dragDataResults.dropUrl = validUri.spec;
+        }
+      }
+
+      return dragDataResults;
+    },
+
+    getParentIndex: function (aRow)
+    {
+      let item = this.getItemAtIndex(aRow);
+
+      if (item)
+      {
+        for (let index = aRow; index >= 0; index--)
+          if (FeedSubscriptions.mFeedContainers[index].level < item.level)
+            return index;
+      }
+
+      return this.kRowIndexUndefined;
+    },
+
+    isIndexChildOfParentIndex: function (aRow, aChildRow)
+    {
+      // For visible tree rows, not if items are children of closed folders.
+      let item = this.getItemAtIndex(aRow);
+      if (!item || aChildRow <= aRow)
+        return false;
+
+      let targetLevel = this.getItemAtIndex(aRow).level;
+      let rows = FeedSubscriptions.mFeedContainers;
+
+      for (let i = aRow + 1; i < rows.length; i++) {
+        if (this.getItemAtIndex(i).level <= targetLevel)
+          break;
+        if (aChildRow == i)
+          return true;
+      }
+
+      return false;
+    },
+
+    hasNextSibling: function(aRow, aAfterIndex) {
+      let targetLevel = this.getItemAtIndex(aRow).level;
+      let rows = FeedSubscriptions.mFeedContainers;
+      for (let i = aAfterIndex + 1; i < rows.length; i++) {
+        if (this.getItemAtIndex(i).level == targetLevel)
+          return true;
+        if (this.getItemAtIndex(i).level < targetLevel)
+          return false;
+      }
+
+      return false;
+    },
+
+    hasPreviousSibling: function (aRow)
+    {
+      let item = this.getItemAtIndex(aRow);
+      if (item && aRow)
+        return this.getItemAtIndex(aRow - 1).level == item.level;
+      else
+        return false;
+    },
+
+    getLevel: function (aRow)
+    {
+      let item = this.getItemAtIndex(aRow);
+      if (!item)
+        return 0;
+
+      return item.level;
+    },
+
+    toggleOpenState: function (aRow)
+    {
+      let item = this.getItemAtIndex(aRow);
+      if (!item)
+        return;
+
+      // Save off the current selection item.
+      let seln = this.selection;
+      let currentSelectionIndex = seln.currentIndex;
+
+      let rowsChanged = this.toggle(aRow)
+
+      // Now restore selection, ensuring selection is maintained on toggles.
+      if (currentSelectionIndex > aRow)
+        seln.currentIndex = currentSelectionIndex + rowsChanged;
+      else
+        seln.select(currentSelectionIndex);
+
+      seln.selectEventsSuppressed = false;
+    },
+
+    toggle: function (aRow)
+    {
+      // Collapse the row, or build sub rows based on open states in the map.
+      let item = this.getItemAtIndex(aRow);
+      if (!item)
+        return null;
+
+      let rows = FeedSubscriptions.mFeedContainers;
+      let rowCount = 0;
+      let multiplier;
+
+      function addDescendants(aItem)
+      {
+        for (let i = 0; i < aItem.children.length; i++)
+        {
+          rowCount++;
+          let child = aItem.children[i];
+          rows.splice(aRow + rowCount, 0, child);
+          if (child.open)
+            addDescendants(child);
+        }
+      }
+
+      if (item.open)
+      {
+        // Close the container.  Add up all subfolders and their descendants
+        // who may be open.
+        multiplier = -1;
+        let nextRow = aRow + 1;
+        let nextItem = rows[nextRow];
+        while (nextItem && nextItem.level > item.level)
+        {
+          rowCount++;
+          nextItem = rows[++nextRow];
+        }
+
+        rows.splice(aRow + 1, rowCount);
+      }
+      else
+      {
+        // Open the container.  Restore the open state of all subfolder and
+        // their descendants.
+        multiplier = 1;
+        addDescendants(item);
+      }
+
+      let delta = multiplier * rowCount;
+      this.mRowCount += delta;
+
+      item.open = !item.open;
+      // Suppress the select event caused by rowCountChanged.
+      this.selection.selectEventsSuppressed = true;
+      // Add or remove the children from our view.
+      this.treeBox.rowCountChanged(aRow, delta);
+      return delta;
+    }
+  },
+
+  makeFolderObject: function (aFolder, aCurrentLevel)
+  {
+    let defaultQuickMode = aFolder.server.getBoolValue("quickMode");
+    let optionsAcct = aFolder.isServer ? FeedUtils.getOptionsAcct(aFolder.server) :
+                                         null;
+    let open = !aFolder.isServer &&
+               aFolder.server == this.mRSSServer &&
+               this.mActionMode == this.kImportingOPML ? true : false
+    let folderObject =  { children : [],
+                          folder   : aFolder,
+                          name     : aFolder.prettyName,
+                          level    : aCurrentLevel,
+                          url      : aFolder.URI,
+                          quickMode: defaultQuickMode,
+                          options  : optionsAcct,
+                          open     : open,
+                          container: true,
+                          favicon  : null };
+
+    // If a feed has any sub folders, add them to the list of children.
+    let folderEnumerator = aFolder.subFolders;
+
+    while (folderEnumerator.hasMoreElements())
+    {
+      let folder = folderEnumerator.getNext();
+      if ((folder instanceof Ci.nsIMsgFolder) &&
+          !folder.getFlag(Ci.nsMsgFolderFlags.Trash) &&
+          !folder.getFlag(Ci.nsMsgFolderFlags.Virtual))
+      {
+        folderObject.children
+                    .push(this.makeFolderObject(folder, aCurrentLevel + 1));
+      }
+    }
+
+    let feeds = this.getFeedsInFolder(aFolder);
+    for (let feed of feeds)
+    {
+      // Now add any feed urls for the folder.
+      folderObject.children.push(this.makeFeedObject(feed,
+                                                     aFolder,
+                                                     aCurrentLevel + 1));
+    }
+
+    // Finally, set the folder's quickMode based on the its first feed's
+    // quickMode, since that is how the view determines summary mode, and now
+    // quickMode is updated to be the same for all feeds in a folder.
+    if (feeds && feeds[0])
+      folderObject.quickMode = feeds[0].quickMode;
+
+    folderObject.children = this.folderItemSorter(folderObject.children);
+
+    return folderObject;
+  },
+
+  folderItemSorter: function (aArray)
+  {
+    return aArray.sort(function(a, b) { return a.name.toLowerCase() >
+                                               b.name.toLowerCase() }).
+                  sort(function(a, b) { return a.container < b.container });
+  },
+
+  getFeedsInFolder: function (aFolder)
+  {
+    let feeds = new Array();
+    let feedUrlArray = FeedUtils.getFeedUrlsInFolder(aFolder);
+    if (!feedUrlArray)
+      // No feedUrls in this folder.
+      return feeds;
+
+    for (let url of feedUrlArray)
+    {
+      let feedResource = FeedUtils.rdf.GetResource(url);
+      let feed = new Feed(feedResource, aFolder.server);
+      feeds.push(feed);
+    }
+
+    return feeds;
+  },
+
+  makeFeedObject: function (aFeed, aFolder, aLevel)
+  {
+    // Look inside the data source for the feed properties.
+    let feed = { children    : [],
+                 parentFolder: aFolder,
+                 name        : aFeed.title || aFeed.description || aFeed.url,
+                 url         : aFeed.url,
+                 quickMode   : aFeed.quickMode,
+                 options     : aFeed.options || FeedUtils.optionsTemplate,
+                 level       : aLevel,
+                 open        : false,
+                 container   : false,
+                 favicon     : null };
+    return feed;
+  },
+
+  loadSubscriptions: function ()
+  {
+    // Put together an array of folders.  Each feed account level folder is
+    // included as the root.
+    let numFolders = 0;
+    let feedContainers = [];
+    // Get all the feed account folders.
+    let feedRootFolders = FeedUtils.getAllRssServerRootFolders();
+
+    feedRootFolders.forEach(function(rootFolder) {
+      feedContainers.push(this.makeFolderObject(rootFolder, 0));
+      numFolders++;
+    }, this);
+
+    this.mFeedContainers = feedContainers;
+    this.mView.mRowCount = numFolders;
+
+    FeedSubscriptions.mTree.focus();
+  },
+
+  /**
+   * Find the folder in the tree.  The search may be limited to subfolders of
+   * a known folder, or expanded to include the entire tree. This function is
+   * also used to insert/remove folders without rebuilding the tree view cache
+   * (to avoid position/toggle state loss).
+   * 
+   * @param  aFolder nsIMsgFolder - the folder to find.
+   * @param  [aParams] object     - params object, containing:
+   * 
+   * [parentIndex] int        - index of folder to start the search; if
+   *                            null (default), the index of the folder's
+   *                            rootFolder will be used.
+   * [select] boolean         - if true (default) the folder's ancestors
+   *                            will be opened and the folder selected.
+   * [open] boolean           - if true (default) the folder is opened.
+   * [remove] boolean         - delete the item from tree row cache if true,
+   *                            false (default) otherwise.
+   * [newFolder] nsIMsgFolder - if not null (default) the new folder,
+   *                            for add or rename.
+   * 
+   * @return bool found - true if found, false if not.
+   */
+  selectFolder: function(aFolder, aParms)
+  {
+    let folderURI = aFolder.URI;
+    let parentIndex = aParms && ("parentIndex" in aParms) ? aParms.parentIndex : null;
+    let selectIt = aParms && ("select" in aParms) ? aParms.select : true;
+    let openIt = aParms && ("open" in aParms) ? aParms.open : true;
+    let removeIt = aParms && ("remove" in aParms) ? aParms.remove : false;
+    let newFolder = aParms && ("newFolder" in aParms) ? aParms.newFolder : null;
+    let startIndex, startItem;
+    let found = false;
+
+    let firstVisRow, curFirstVisRow, curLastVisRow;
+    if (this.mView.treeBox)
+      firstVisRow = this.mView.treeBox.getFirstVisibleRow();
+
+    if (parentIndex != null)
+    {
+      // Use the parentIndex if given.
+      startIndex = parentIndex;
+      if (aFolder.isServer)
+        // Fake item for account root folder.
+        startItem = { name: "AccountRoot",
+                      children: [this.mView.getItemAtIndex(startIndex)],
+                      container: true, open: false, url: null, level: -1};
+      else
+        startItem = this.mView.getItemAtIndex(startIndex);
+    }
+    else
+    {
+      // Get the folder's root parent index.
+      let index = 0;
+      for (index; index < this.mView.rowCount; index++)
+      {
+        let item = this.mView.getItemAtIndex(index);
+        if (item.url == aFolder.server.rootFolder.URI)
+          break;
+      }
+      startIndex = index;
+      if (aFolder.isServer)
+        // Fake item for account root folder.
+        startItem = { name: "AccountRoot",
+                      children: [this.mView.getItemAtIndex(startIndex)],
+                      container: true, open: false, url: null, level: -1};
+      else
+        startItem = this.mView.getItemAtIndex(startIndex);
+    }
+
+    function containsFolder(aItem)
+    {
+      // Search for the folder.  If it's found, set the open state on all
+      // ancestor folders.  A toggle() rebuilds the view rows to match the map.
+      if (aItem.url == folderURI)
+        return found = true;
+
+      for (let i = 0; i < aItem.children.length; i++) {
+        if (aItem.children[i].container && containsFolder(aItem.children[i]))
+        {
+          if (removeIt && aItem.children[i].url == folderURI)
+          {
+            // Get all occurences in the tree cache arrays.
+            FeedUtils.log.debug("selectFolder: delete in cache, " +
+                                "parent:children:item:index - "+
+                                aItem.name + ":" + aItem.children.length + ":" +
+                                aItem.children[i].name + ":" + i);
+            aItem.children.splice(i, 1);
+            FeedUtils.log.debug("selectFolder: deleted in cache, " +
+                                "parent:children - " +
+                                aItem.name + ":" + aItem.children.length);
+            removeIt = false;
+            return true;
+          }
+          if (newFolder)
+          {
+            let newItem = FeedSubscriptions.makeFolderObject(newFolder,
+                                                             aItem.level + 1);
+            newItem.open = aItem.children[i].open;
+            if (newFolder.isServer)
+              FeedSubscriptions.mFeedContainers[startIndex] = newItem;
+            else
+            {
+              aItem.children[i] = newItem;
+              aItem.children = FeedSubscriptions.folderItemSorter(aItem.children);
+            }
+            FeedUtils.log.trace("selectFolder: parentName:newFolderName:newFolderItem - " +
+                                aItem.name + ":" + newItem.name + ":" + newItem.toSource());
+            newFolder = null;
+            return true;
+          }
+          if (!found)
+          {
+            // For the folder to find.
+            found = true;
+            aItem.children[i].open = openIt;
+          }
+          else
+          {
+            // For ancestor folders.
+            if (selectIt || openIt)
+              aItem.children[i].open = true;
+          }
+
+          return true;
+        }
+      }
+
+      return false;
+    }
+
+    if (startItem)
+    {
+      // Find a folder with a specific parent.
+      containsFolder(startItem);
+      if (!found)
+        return false;
+
+      if (!selectIt)
+        return true;
+
+      if (startItem.open)
+        this.mView.toggle(startIndex);
+      this.mView.toggleOpenState(startIndex);
+    }
+
+    for (let index = 0; index < this.mView.rowCount && selectIt; index++)
+    {
+      // The desired folder is now in the view.
+      let item = this.mView.getItemAtIndex(index);
+      if (!item.container)
+        continue;
+      if (item.url == folderURI)
+      {
+        if (item.children.length &&
+            ((!item.open && openIt) || (item.open && !openIt)))
+          this.mView.toggleOpenState(index);
+        this.mView.selection.select(index);
+        found = true;
+        break;
+      }
+    }
+
+    // Ensure tree position does not jump unnecessarily.
+    curFirstVisRow = this.mView.treeBox.getFirstVisibleRow();
+    curLastVisRow = this.mView.treeBox.getLastVisibleRow();
+    if (firstVisRow >= 0 &&
+        this.mView.rowCount - curLastVisRow > firstVisRow - curFirstVisRow)
+      this.mView.treeBox.scrollToRow(firstVisRow);
+    else
+      this.mView.treeBox.ensureRowIsVisible(this.mView.rowCount - 1);
+
+    FeedUtils.log.debug("selectFolder: curIndex:firstVisRow:" +
+                        "curFirstVisRow:curLastVisRow:rowCount - " +
+                        this.mView.selection.currentIndex + ":" +
+                        firstVisRow + ":" +
+                        curFirstVisRow + ":" + curLastVisRow + ":" + this.mView.rowCount);
+
+    return found;
+  },
+
+  /**
+   * Find the feed in the tree.  The search first gets the feed's folder,
+   * then selects the child feed.
+   * 
+   * @param  aFeed {Feed object}    - the feed to find.
+   * @param  [aParentIndex] integer - index to start the folder search.
+   * 
+   * @return found bool - true if found, false if not.
+   */
+  selectFeed: function(aFeed, aParentIndex)
+  {
+    let folder = aFeed.folder;
+    let found = false;
+
+    if (aFeed.folder.isServer) {
+      // If passed the root folder, the caller wants to get the feed's folder
+      // from the db (for cases of an ancestor folder rename/move).
+      let itemResource = FeedUtils.rdf.GetResource(aFeed.url);
+      let ds = FeedUtils.getSubscriptionsDS(aFeed.folder.server);
+      folder = ds.GetTarget(itemResource, FeedUtils.FZ_DESTFOLDER, true);
+    }
+
+    if (this.selectFolder(folder, { parentIndex: aParentIndex }))
+    {
+      let seln = this.mView.selection;
+      let item = this.mView.currentItem;
+      if (item) {
+        for (let i = seln.currentIndex + 1; i < this.mView.rowCount; i++) {
+          if (this.mView.getItemAtIndex(i).url == aFeed.url) {
+            this.mView.selection.select(i);
+            this.mView.treeBox.ensureRowIsVisible(i);
+            found = true;
+            break;
+          }
+        }
+      }
+    }
+
+    return found;
+  },
+
+  updateFeedData: function (aItem)
+  {
+    if (!aItem)
+      return;
+
+    let nameValue = document.getElementById("nameValue");
+    let locationValue = document.getElementById("locationValue");
+    let locationValidate = document.getElementById("locationValidate");
+    let selectFolder = document.getElementById("selectFolder");
+    let selectFolderValue = document.getElementById("selectFolderValue");
+    let isServer = aItem.folder && aItem.folder.isServer;
+    let isFolder = aItem.folder && !aItem.folder.isServer;
+    let isFeed = !aItem.container;
+    let server, displayFolder;
+
+    if (isFeed)
+    {
+      // A feed item.  Set the feed location and title info.
+      nameValue.value = aItem.name;
+      locationValue.value = aItem.url;
+      locationValidate.removeAttribute("collapsed");
+
+      // Root the location picker to the news & blogs server.
+      server = aItem.parentFolder.server;
+      displayFolder = aItem.parentFolder;
+    }
+    else
+    {
+      // A folder/container item.
+      nameValue.value = "";
+      nameValue.disabled = true;
+      locationValue.value = "";
+      locationValidate.setAttribute("collapsed", true);
+
+      server = aItem.folder.server;
+      displayFolder = aItem.folder;
+    }
+
+    // Common to both folder and feed items.
+    nameValue.disabled = aItem.container;
+    this.setFolderPicker(displayFolder, isFeed);
+
+    // Set quick mode value.
+    document.getElementById("quickMode").checked = aItem.quickMode;
+
+    // Autotag items.
+    let autotagEnable = document.getElementById("autotagEnable");
+    let autotagUsePrefix = document.getElementById("autotagUsePrefix");
+    let autotagPrefix = document.getElementById("autotagPrefix");
+    let categoryPrefsAcct = FeedUtils.getOptionsAcct(server).category;
+    if (isServer)
+      aItem.options = FeedUtils.getOptionsAcct(server);
+    let categoryPrefs = aItem.options ? aItem.options.category : null;
+
+    autotagEnable.checked = categoryPrefs && categoryPrefs.enabled;
+    autotagUsePrefix.checked = categoryPrefs && categoryPrefs.prefixEnabled;
+    autotagUsePrefix.disabled = !autotagEnable.checked;
+    autotagPrefix.disabled = autotagUsePrefix.disabled || !autotagUsePrefix.checked;
+    autotagPrefix.value = categoryPrefs && categoryPrefs.prefix ?
+                            categoryPrefs.prefix : "";
+  },
+
+  setFolderPicker: function(aFolder, aIsFeed)
+  {
+    let editFeed = document.getElementById("editFeed");
+    let folderPrettyPath = FeedUtils.getFolderPrettyPath(aFolder);
+    if (!folderPrettyPath)
+      return editFeed.disabled = true;
+
+    let selectFolder = document.getElementById("selectFolder");
+    let selectFolderPopup = document.getElementById("selectFolderPopup");
+    let selectFolderValue = document.getElementById("selectFolderValue");
+
+    selectFolder.setAttribute("hidden", !aIsFeed);
+    selectFolder._folder = aFolder;
+    selectFolderValue.setAttribute("hidden", aIsFeed);
+    selectFolderValue.setAttribute("showfilepath", false);
+
+    if (aIsFeed)
+    {
+      selectFolderPopup._ensureInitialized();
+      selectFolderPopup.selectFolder(aFolder);
+      selectFolder.setAttribute("label", folderPrettyPath);
+      selectFolder.setAttribute("uri", aFolder.URI);
+    }
+    else
+    {
+      selectFolderValue.value = folderPrettyPath;
+      selectFolderValue.setAttribute("prettypath", folderPrettyPath);
+      selectFolderValue.setAttribute("filepath", aFolder.filePath.path);
+    }
+
+    return editFeed.disabled = false;
+  },
+
+  onClickSelectFolderValue: function(aEvent)
+  {
+    let target = aEvent.target;
+    if ((("button" in aEvent) &&
+         (aEvent.button != 0 ||
+          aEvent.originalTarget.localName != "div" ||
+          target.selectionStart != target.selectionEnd)) ||
+        (aEvent.keyCode && aEvent.keyCode != aEvent.DOM_VK_RETURN))
+      return;
+
+    // Toggle between showing prettyPath and absolute filePath.
+    if (target.getAttribute("showfilepath") == "true")
+    {
+      target.setAttribute("showfilepath", false);
+      target.value = target.getAttribute("prettypath");
+    }
+    else
+    {
+      target.setAttribute("showfilepath", true);
+      target.value = target.getAttribute("filepath");
+    }
+  },
+
+  setNewFolder: function(aEvent)
+  {
+    aEvent.stopPropagation();
+    this.setFolderPicker(aEvent.target._folder, true);
+    this.editFeed();
+  },
+
+  setSummary: function(aChecked)
+  {
+    let item = this.mView.currentItem;
+    if (!item || !item.folder)
+      // Not a folder.
+      return;
+
+    if (item.folder.isServer)
+    {
+      if (document.getElementById("locationValue").value)
+        // Intent is to add a feed/folder to the account, so return.
+        return;
+
+      // An account folder.  If it changes, all non feed containing subfolders
+      // need to be updated with the new default.
+      item.folder.server.setBoolValue("quickMode", aChecked);
+      this.FolderListener.folderAdded(item.folder);
+    }
+    else if (!FeedUtils.getFeedUrlsInFolder(item.folder))
+      // Not a folder with feeds.
+      return;
+    else
+    {
+      let feedsInFolder = this.getFeedsInFolder(item.folder);
+      // Update the feeds database, for each feed in the folder.
+      feedsInFolder.forEach(function(feed) { feed.quickMode = aChecked; });
+      // Update the folder's feeds properties in the tree map.
+      item.children.forEach(function(feed) { feed.quickMode = aChecked; });
+      let ds = FeedUtils.getSubscriptionsDS(item.folder.server);
+      ds.Flush();
+    }
+
+    // Update the folder in the tree map.
+    item.quickMode = aChecked;
+    let message = FeedUtils.strings.GetStringFromName("subscribe-feedUpdated");
+    this.updateStatusItem("statusText", message);
+  },
+
+  setCategoryPrefs: function(aNode)
+  {
+    let item = this.mView.currentItem;
+    if (!item)
+      return;
+
+    let isServer = item.folder && item.folder.isServer;
+    let isFolder = item.folder && !item.folder.isServer;
+    let autotagEnable = document.getElementById("autotagEnable");
+    let autotagUsePrefix = document.getElementById("autotagUsePrefix");
+    let autotagPrefix = document.getElementById("autotagPrefix");
+    if (isFolder || (isServer && document.getElementById("locationValue").value))
+    {
+      // Intend to subscribe a feed to a folder, a value must be in the url
+      // field. Update states for addFeed() and return.
+      autotagUsePrefix.disabled = !autotagEnable.checked;
+      autotagPrefix.disabled = autotagUsePrefix.disabled || !autotagUsePrefix.checked;
+      return;
+    }
+
+    switch (aNode.id) {
+      case "autotagEnable":
+        item.options.category.enabled = aNode.checked;
+        break;
+      case "autotagUsePrefix":
+        item.options.category.prefixEnabled = aNode.checked;
+        item.options.category.prefix = autotagPrefix.value;
+        break;
+    }
+
+    if (isServer)
+    {
+      FeedUtils.setOptionsAcct(item.folder.server, item.options)
+    }
+    else
+    {
+      let feedResource = FeedUtils.rdf.GetResource(item.url);
+      let feed = new Feed(feedResource, item.parentFolder.server);
+      feed.options = item.options;
+      let ds = FeedUtils.getSubscriptionsDS(item.parentFolder.server);
+      ds.Flush();
+    }
+
+    this.updateFeedData(item);
+    let message = FeedUtils.strings.GetStringFromName("subscribe-feedUpdated");
+    this.updateStatusItem("statusText", message);
+  },
+
+  onKeyPress: function(aEvent)
+  {
+    if (aEvent.keyCode == aEvent.DOM_VK_DELETE &&
+        aEvent.target.id == "rssSubscriptionsList")
+      this.removeFeed(true);
+
+    this.clearStatusInfo();
+  },
+
+  onSelect: function ()
+  {
+    let item = this.mView.currentItem;
+    this.updateFeedData(item);
+    this.setSummaryFocus();
+    this.updateButtons(item);
+  },
+
+  updateButtons: function (aSelectedItem)
+  {
+    let item = aSelectedItem;
+    let isServer = item && item.folder && item.folder.isServer;
+    let disable = !item || !item.container || isServer ||
+                  this.mActionMode == this.kImportingOPML;
+    document.getElementById("addFeed").disabled = disable;
+    disable = !item || (item.container && !isServer) ||
+              this.mActionMode == this.kImportingOPML;
+    document.getElementById("editFeed").disabled = disable;
+    disable = !item || item.container ||
+              this.mActionMode == this.kImportingOPML;
+    document.getElementById("removeFeed").disabled = disable;
+    disable = !item || !isServer ||
+              this.mActionMode == this.kImportingOPML;
+    document.getElementById("importOPML").disabled = disable;
+    document.getElementById("exportOPML").disabled = disable;
+  },
+
+  onMouseDown: function (aEvent)
+  {
+    if (aEvent.button != 0 ||
+        aEvent.target.id == "validationText" ||
+        aEvent.target.id == "addCertException")
+      return;
+
+    this.clearStatusInfo();
+  },
+
+  setSummaryFocus: function ()
+  {
+    let item = this.mView.currentItem;
+    if (!item)
+      return;
+
+    let locationValue = document.getElementById("locationValue");
+    let quickMode = document.getElementById("quickMode");
+    let autotagEnable = document.getElementById("autotagEnable");
+    let autotagUsePrefix = document.getElementById("autotagUsePrefix");
+    let autotagPrefix = document.getElementById("autotagPrefix");
+    let isServer = item.folder && item.folder.isServer;
+    let isFolder = item.folder && !item.folder.isServer;
+    let isFeed = !item.container;
+
+    // Enable summary/autotag by default.
+    quickMode.disabled = autotagEnable.disabled = false;
+    autotagUsePrefix.disabled = !autotagEnable.checked;
+    autotagPrefix.disabled = autotagUsePrefix.disabled || !autotagUsePrefix.checked;
+
+    if (isServer)
+    {
+      let disable = locationValue.hasAttribute("focused") || locationValue.value;
+      document.getElementById("addFeed").disabled = !disable;
+      document.getElementById("editFeed").disabled = disable;
+
+    }
+    else if (isFolder)
+    {
+      if (!locationValue.hasAttribute("focused") && !locationValue.value)
+      {
+        // Enabled for a folder with feeds. Autotag disabled unless intent is
+        // to add a feed.
+        quickMode.disabled = !FeedUtils.getFeedUrlsInFolder(item.folder);
+        autotagEnable.disabled = autotagUsePrefix.disabled =
+          autotagPrefix.disabled = true;
+      }
+    }
+    else
+    {
+      // Summary is per folder.
+      quickMode.disabled = true;
+    }
+  },
+
+  removeFeed: function (aPrompt)
+  {
+    let seln = this.mView.selection;
+    if (seln.count != 1)
+      return;
+
+    let itemToRemove = this.mView.getItemAtIndex(seln.currentIndex);
+
+    if (!itemToRemove || itemToRemove.container)
+      return;
+
+    if (aPrompt)
+    {
+      // Confirm unsubscribe prompt.
+      let pTitle = FeedUtils.strings.GetStringFromName(
+                     "subscribe-confirmFeedDeletionTitle");
+      let pMessage = FeedUtils.strings.formatStringFromName(
+                       "subscribe-confirmFeedDeletion", [itemToRemove.name], 1);
+      if (Services.prompt.confirmEx(window, pTitle, pMessage,
+                                    Ci.nsIPromptService.STD_YES_NO_BUTTONS,
+                                    null, null, null, null, { }))
+        return;
+    }
+
+    FeedUtils.deleteFeed(FeedUtils.rdf.GetResource(itemToRemove.url),
+                         itemToRemove.parentFolder.server,
+                         itemToRemove.parentFolder);
+
+    // Now that we have removed the feed from the datasource, it is time to
+    // update our view layer.  Update parent folder's quickMode if necessary
+    // and remove the child from its parent folder object.
+    let parentIndex = this.mView.getParentIndex(seln.currentIndex);
+    let parentItem = this.mView.getItemAtIndex(parentIndex);
+    this.updateFolderQuickModeInView(itemToRemove, parentItem, true);
+    this.mView.removeItemAtIndex(seln.currentIndex, false);
+    let message = FeedUtils.strings.GetStringFromName("subscribe-feedRemoved");
+    this.updateStatusItem("statusText", message);
+  },
+
+
+  /**
+   * This addFeed is used by 1) Add button, 1) Update button, 3) Drop of a
+   * feed url on a folder (which can be an add or move).  If Update, the new
+   * url is added and the old removed; thus aParse is false and no new messages
+   * are downloaded, the feed is only validated and stored in the db.  If dnd,
+   * the drop folder is selected and the url is prefilled, so proceed just as
+   * though the url were entered manually.  This allows a user to see the dnd
+   * url better in case of errors.
+   * 
+   * @param  [aFeedLocation] string    - the feed url; get the url from the
+   *                                     input field if null.
+   * @param  [aFolder] nsIMsgFolder    - folder to subscribe, current selected
+   *                                     folder if null.
+   * @param  [aParse] boolean          - if true (default) parse and download
+   *                                     the feed's articles.
+   * @param  [aParams] object          - additional params.
+   * @param  [aMode] integer           - action mode (default is kSubscribeMode)
+   *                                     of the add.
+   * 
+   * @return success boolean           - true if edit checks passed and an
+   *                                     async download has been initiated.
+   */
+  addFeed: function(aFeedLocation, aFolder, aParse, aParams, aMode)
+  {
+    let message;
+    let parse = aParse == null ? true : aParse;
+    let mode = aMode == null ? this.kSubscribeMode : aMode;
+    let locationValue = document.getElementById("locationValue");
+    let quickMode = aParams && ("quickMode" in aParams) ?
+        aParams.quickMode : document.getElementById("quickMode").checked;
+    let name = aParams && ("name" in aParams) ?
+        aParams.name : document.getElementById("nameValue").value;
+    let options = aParams && ("options" in aParams) ?
+        aParams.options : null;
+
+    if (aFeedLocation)
+      locationValue.value = aFeedLocation;
+    let feedLocation = locationValue.value.trim();
+
+    if (!feedLocation)
+    {
+      message = locationValue.getAttribute("placeholder");
+      this.updateStatusItem("statusText", message);
+      return false;
+    }
+
+    if (!FeedUtils.isValidScheme(feedLocation))
+    {
+      message = FeedUtils.strings.GetStringFromName("subscribe-feedNotValid");
+      this.updateStatusItem("statusText", message);
+      return false;
+    }
+
+    let addFolder;
+    if (aFolder)
+    {
+      // For Update or if passed a folder.
+      if (aFolder instanceof Ci.nsIMsgFolder)
+        addFolder = aFolder;
+    }
+    else
+    {
+      // A folder must be selected for Add and Drop.
+      let index = this.mView.selection.currentIndex;
+      let item = this.mView.getItemAtIndex(index);
+      if (item && item.container)
+        addFolder = item.folder;
+    }
+
+    // Shouldn't happen.  Or else not passed an nsIMsgFolder.
+    if (!addFolder)
+      return false;
+
+    // Before we go any further, make sure the user is not already subscribed
+    // to this feed.
+    if (FeedUtils.feedAlreadyExists(feedLocation, addFolder.server))
+    {
+      message = FeedUtils.strings.GetStringFromName(
+                  "subscribe-feedAlreadySubscribed");
+      this.updateStatusItem("statusText", message);
+      return false;
+    }
+
+    if (!options)
+    {
+      // Not passed a param, get values from the ui.
+      options = FeedUtils.optionsTemplate;
+      options.category.enabled = document.getElementById("autotagEnable").checked;
+      options.category.prefixEnabled = document.getElementById("autotagUsePrefix").checked;
+      options.category.prefix = document.getElementById("autotagPrefix").value;
+    }
+
+    let folderURI = addFolder.isServer ? null : addFolder.URI;
+    let feedProperties = { feedName     : name,
+                           feedLocation : feedLocation,
+                           folderURI    : folderURI,
+                           server       : addFolder.server,
+                           quickMode    : quickMode,
+                           options      : options };
+
+    let feed = this.storeFeed(feedProperties);
+    if (!feed)
+      return false;
+
+    // Now validate and start downloading the feed.
+    message = FeedUtils.strings.GetStringFromName("subscribe-validating-feed");
+    this.updateStatusItem("statusText", message);
+    this.updateStatusItem("progressMeter", 0);
+    document.getElementById("addFeed").setAttribute("disabled", true);
+    this.mActionMode = mode;
+    feed.download(parse, this.mFeedDownloadCallback);
+    return true;
+  },
+
+  // Helper routine used by addFeed and importOPMLFile.
+  storeFeed: function(feedProperties)
+  {
+    let itemResource = FeedUtils.rdf.GetResource(feedProperties.feedLocation);
+    let feed = new Feed(itemResource, feedProperties.server);
+
+    // If the user specified a folder to add the feed to, then set it here.
+    if (feedProperties.folderURI)
+    {
+      let folderResource = FeedUtils.rdf.GetResource(feedProperties.folderURI);
+      if (folderResource)
+      {
+        let folder = folderResource.QueryInterface(Ci.nsIMsgFolder);
+        if (folder && !folder.isServer)
+          feed.folder = folder;
+      }
+    }
+
+    feed.title = feedProperties.feedName;
+    feed.quickMode = feedProperties.quickMode;
+    feed.options = feedProperties.options;
+    return feed;
+  },
+
+  updateAccount: function(aItem)
+  {
+    // Check to see if the categoryPrefs custom prefix string value changed.
+    let editAutotagPrefix = document.getElementById("autotagPrefix").value;
+    if (aItem.options.category.prefix != editAutotagPrefix)
+    {
+      aItem.options.category.prefix = editAutotagPrefix;
+      FeedUtils.setOptionsAcct(aItem.folder.server, aItem.options)
+      let message = FeedUtils.strings.GetStringFromName("subscribe-feedUpdated");
+      this.updateStatusItem("statusText", message);
+    }
+  },
+
+  editFeed: function()
+  {
+    let seln = this.mView.selection;
+    if (seln.count != 1)
+      return;
+
+    let itemToEdit = this.mView.getItemAtIndex(seln.currentIndex);
+    if (itemToEdit.folder && itemToEdit.folder.isServer)
+    {
+      this.updateAccount(itemToEdit)
+      return;
+    }
+
+    if (!itemToEdit || itemToEdit.container || !itemToEdit.parentFolder)
+      return;
+
+    let resource = FeedUtils.rdf.GetResource(itemToEdit.url);
+    let currentFolderServer = itemToEdit.parentFolder.server;
+    let ds = FeedUtils.getSubscriptionsDS(currentFolderServer);
+    let currentFolderURI = itemToEdit.parentFolder.URI;
+    let feed = new Feed(resource, currentFolderServer);
+    feed.folder = itemToEdit.parentFolder;
+
+    let editNameValue = document.getElementById("nameValue").value;
+    let editFeedLocation = document.getElementById("locationValue").value.trim();
+    let selectFolder = document.getElementById("selectFolder");
+    let editQuickMode = document.getElementById("quickMode").checked;
+    let editAutotagPrefix = document.getElementById("autotagPrefix").value;
+
+    if (feed.url != editFeedLocation)
+    {
+      // Updating a url.  We need to add the new url and delete the old, to
+      // ensure everything is cleaned up correctly.
+      this.addFeed(null, itemToEdit.parentFolder, false, null, this.kUpdateMode)
+      return;
+    }
+
+    // Did the user change the folder URI for storing the feed?
+    let editFolderURI = selectFolder.getAttribute("uri");
+    if (currentFolderURI != editFolderURI)
+    {
+      // Make sure the new folderpicked folder is visible.
+      this.selectFolder(selectFolder._folder);
+      // Now go back to the feed item.
+      this.selectFeed(feed, null);
+      // We need to find the index of the new parent folder.
+      let newParentIndex = this.mView.kRowIndexUndefined;
+      for (let index = 0; index < this.mView.rowCount; index++)
+      {
+        let item = this.mView.getItemAtIndex(index);
+        if (item && item.container && item.url == editFolderURI)
+        {
+          newParentIndex = index;
+          break;
+        }
+      }
+
+      if (newParentIndex != this.mView.kRowIndexUndefined)
+        this.moveCopyFeed(seln.currentIndex, newParentIndex, "move");
+
+      return;
+    }
+
+    let updated = false;
+    let message = "";
+    // Disable the button until the update completes and we process the async
+    // verify response.
+    document.getElementById("editFeed").setAttribute("disabled", true);
+
+    // Check to see if the title value changed, no blank title allowed.
+    if (feed.title != editNameValue)
+    {
+      if (!editNameValue)
+      {
+        document.getElementById("nameValue").value = feed.title;
+      }
+      else
+      {
+        feed.title = editNameValue;
+        itemToEdit.name = editNameValue;
+        seln.tree.invalidateRow(seln.currentIndex);
+        updated = true;
+      }
+    }
+
+    // Check to see if the quickMode value changed.
+    if (feed.quickMode != editQuickMode)
+    {
+      feed.quickMode = editQuickMode;
+      itemToEdit.quickMode = editQuickMode;
+      updated = true;
+    }
+
+    // Check to see if the categoryPrefs custom prefix string value changed.
+    if (itemToEdit.options.category.prefix != editAutotagPrefix &&
+        itemToEdit.options.category.prefix != null &&
+        editAutotagPrefix != "")
+    {
+      itemToEdit.options.category.prefix = editAutotagPrefix;
+      feed.options = itemToEdit.options;
+      updated = true;
+    }
+
+    let verifyDelay = 0;
+    if (updated) {
+      ds.Flush();
+      message = FeedUtils.strings.GetStringFromName("subscribe-feedUpdated");
+      this.updateStatusItem("statusText", message);
+      verifyDelay = 1500;
+    }
+
+    // Now we want to verify if the stored feed url still works. If it
+    // doesn't, show the error. Delay a bit to leave Updated message visible.
+    message = FeedUtils.strings.GetStringFromName("subscribe-validating-feed");
+    this.mActionMode = this.kVerifyUrlMode;
+    setTimeout(() => {
+      this.updateStatusItem("statusText", message);
+      this.updateStatusItem("progressMeter", "?");
+      feed.download(false, this.mFeedDownloadCallback);
+    }, verifyDelay);
+  },
+
+/**
+ * Moves or copies a feed to another folder or account.
+ * 
+ * @param  int aOldFeedIndex    - index in tree of target feed item.
+ * @param  int aNewParentIndex  - index in tree of target parent folder item.
+ * @param  string aMoveCopy     - either "move" or "copy".
+ */
+  moveCopyFeed: function(aOldFeedIndex, aNewParentIndex, aMoveCopy)
+  {
+    let moveFeed = aMoveCopy == "move";
+    let currentItem = this.mView.getItemAtIndex(aOldFeedIndex);
+    if (!currentItem ||
+        this.mView.getParentIndex(aOldFeedIndex) == aNewParentIndex)
+      // If the new parent is the same as the current parent, then do nothing.
+      return;
+
+    let currentParentIndex = this.mView.getParentIndex(aOldFeedIndex);
+    let currentParentItem = this.mView.getItemAtIndex(currentParentIndex);
+    let currentParentResource = FeedUtils.rdf.GetResource(currentParentItem.url);
+    let currentFolder = currentParentResource.QueryInterface(Ci.nsIMsgFolder);
+
+    let newParentItem = this.mView.getItemAtIndex(aNewParentIndex);
+    let newParentResource = FeedUtils.rdf.GetResource(newParentItem.url);
+    let newFolder = newParentResource.QueryInterface(Ci.nsIMsgFolder);
+
+    let ds = FeedUtils.getSubscriptionsDS(currentItem.parentFolder.server);
+    let resource = FeedUtils.rdf.GetResource(currentItem.url);
+
+    let accountMoveCopy = false;
+    if (currentFolder.rootFolder.URI == newFolder.rootFolder.URI)
+    {
+      // Moving within the same account/feeds db.
+      if (newFolder.isServer || !moveFeed)
+        // No moving to account folder if already in the account; can only move,
+        // not copy, to folder in the same account.
+        return;
+
+      // Unassert the older URI, add an assertion for the new parent URI.
+      ds.Change(resource, FeedUtils.FZ_DESTFOLDER,
+                currentParentResource, newParentResource);
+      ds.Flush();
+
+      // Update folderpane favicons.
+      FeedUtils.setFolderPaneProperty(currentFolder, "favicon", null, "row");
+      FeedUtils.setFolderPaneProperty(newFolder, "favicon", null, "row");
+    }
+    else
+    {
+      // Moving/copying to a new account.  If dropping on the account folder,
+      // a new subfolder is created if necessary.
+      accountMoveCopy = true;
+      let mode = moveFeed ? this.kMoveMode : this.kCopyMode;
+      let params = {quickMode: currentItem.quickMode,
+                    name:      currentItem.name,
+                    options:   currentItem.options};
+      // Subscribe to the new folder first.  If it already exists in the
+      // account or on error, return.
+      if (!this.addFeed(currentItem.url, newFolder, false, params, mode))
+        return;
+      // Unsubscribe the feed from the old folder, if add to the new folder
+      // is successfull, and doing a move.
+      if (moveFeed)
+        FeedUtils.deleteFeed(FeedUtils.rdf.GetResource(currentItem.url),
+                             currentItem.parentFolder.server,
+                             currentItem.parentFolder);
+    }
+
+    // Update local favicons.
+    currentParentItem.favicon = newParentItem.favicon = null;
+
+    // Finally, update our view layer.  Update old parent folder's quickMode
+    // and remove the old row, if move.  Otherwise no change to the view.
+    if (moveFeed)
+    {
+      this.updateFolderQuickModeInView(currentItem, currentParentItem, true);
+      this.mView.removeItemAtIndex(aOldFeedIndex, true);
+      if (aNewParentIndex > aOldFeedIndex)
+        aNewParentIndex--;
+    }
+
+    if (accountMoveCopy)
+    {
+      // If a cross account move/copy, download callback will update the view
+      // with the new location.  Preselect folder/mode for callback.
+      this.selectFolder(newFolder, { parentIndex: aNewParentIndex });
+      return;
+    }
+
+    // Add the new row location to the view.
+    currentItem.level = newParentItem.level + 1;
+    currentItem.parentFolder = newFolder;
+    this.updateFolderQuickModeInView(currentItem, newParentItem, false);
+    newParentItem.children.push(currentItem);
+
+    if (newParentItem.open)
+      // Close the container, selecting the feed will rebuild the view rows.
+      this.mView.toggle(aNewParentIndex);
+
+    this.selectFeed({folder: newParentItem.folder, url: currentItem.url},
+                    aNewParentIndex);
+
+    let message = FeedUtils.strings.GetStringFromName("subscribe-feedMoved");
+    this.updateStatusItem("statusText", message);
+  },
+
+  updateFolderQuickModeInView: function (aFeedItem, aParentItem, aRemove)
+  {
+    let feedItem = aFeedItem;
+    let parentItem = aParentItem;
+    let feedUrlArray = FeedUtils.getFeedUrlsInFolder(feedItem.parentFolder);
+    let feedsInFolder = feedUrlArray ? feedUrlArray.length : 0;
+
+    if (aRemove && feedsInFolder < 1)
+      // Removed only feed in folder; set quickMode to server default.
+      parentItem.quickMode = parentItem.folder.server.getBoolValue("quickMode");
+
+    if (!aRemove)
+    {
+      // Just added a feed to a folder.  If there are already feeds in the
+      // folder, the feed must reflect the parent's quickMode.  If it is the
+      // only feed, update the parent folder to the feed's quickMode.
+      if (feedsInFolder > 1)
+      {
+        let feedResource = FeedUtils.rdf.GetResource(feedItem.url);
+        let feed = new Feed(feedResource, feedItem.parentFolder.server);
+        feed.quickMode = parentItem.quickMode;
+        feedItem.quickMode = parentItem.quickMode;
+      }
+      else
+        parentItem.quickMode = feedItem.quickMode;
+    }
+  },
+
+  onDragStart: function (aEvent)
+  {
+    // Get the selected feed article (if there is one).
+    let seln = this.mView.selection;
+    if (seln.count != 1)
+      return;
+
+    // Only initiate a drag if the item is a feed (ignore folders/containers).
+    let item = this.mView.getItemAtIndex(seln.currentIndex);
+    if (!item || item.container)
+      return;
+
+    aEvent.dataTransfer.setData("text/x-moz-feed-index", seln.currentIndex);
+    aEvent.dataTransfer.effectAllowed = "copyMove";
+  },
+
+  onDragOver: function (aEvent)
+  {
+    this.mView._currentDataTransfer = aEvent.dataTransfer;
+  },
+
+  mFeedDownloadCallback:
+  {
+    mSubscribeMode: true,
+    downloaded: function(feed, aErrorCode)
+    {
+      // Offline check is done in the context of 3pane, return to the subscribe
+      // window once the modal prompt is dispatched.
+      window.focus();
+      // Feed is null if our attempt to parse the feed failed.
+      let message = "";
+      let win = FeedSubscriptions;
+      if (aErrorCode == FeedUtils.kNewsBlogSuccess ||
+          aErrorCode == FeedUtils.kNewsBlogNoNewItems)
+      {
+        win.updateStatusItem("progressMeter", 100);
+
+        if (win.mActionMode == win.kVerifyUrlMode) {
+          // Just checking for errors, if none bye. The (non error) code
+          // kNewsBlogNoNewItems can only happen in verify mode.
+          win.mActionMode = null;
+          win.clearStatusInfo();
+          message = FeedUtils.strings.GetStringFromName("subscribe-feedVerified");
+          win.updateStatusItem("statusText", message);
+          document.getElementById("editFeed").removeAttribute("disabled");
+          return;
+        }
+
+        // Add the feed to the databases.
+        FeedUtils.addFeed(feed);
+
+        // Now add the feed to our view.  If adding, the current selection will
+        // be a folder; if updating it will be a feed.  No need to rebuild the
+        // entire view, that is too jarring.
+        let curIndex = win.mView.selection.currentIndex;
+        let curItem = win.mView.getItemAtIndex(curIndex);
+        if (curItem)
+        {
+          let parentIndex, parentItem, newItem, level;
+          let rows = win.mFeedContainers;
+          if (curItem.container)
+          {
+            // Open the container, if it exists.
+            let folderExists = win.selectFolder(feed.folder,
+                                                { parentIndex: curIndex });
+            if (!folderExists)
+            {
+              // This means a new folder was created.
+              parentIndex = curIndex;
+              parentItem = curItem;
+              level = curItem.level + 1;
+              newItem = win.makeFolderObject(feed.folder, level);
+            }
+            else
+            {
+              // If a folder happens to exist which matches one that would
+              // have been created, the feed system reuses it.  Get the
+              // current item again if reusing a previously unselected folder.
+              curIndex = win.mView.selection.currentIndex;
+              curItem = win.mView.getItemAtIndex(curIndex);
+              parentIndex = curIndex;
+              parentItem = curItem;
+              level = curItem.level + 1;
+              newItem = win.makeFeedObject(feed, feed.folder, level);
+            }
+          }
+          else
+          {
+            // Adding a feed.
+            parentIndex = win.mView.getParentIndex(curIndex);
+            parentItem = win.mView.getItemAtIndex(parentIndex);
+            level = curItem.level;
+            newItem = win.makeFeedObject(feed, feed.folder, level);
+          }
+
+          if (!newItem.container)
+            win.updateFolderQuickModeInView(newItem, parentItem, false);
+          parentItem.children.push(newItem);
+          parentItem.children = win.folderItemSorter(parentItem.children);
+          parentItem.favicon = null;
+
+          if (win.mActionMode == win.kSubscribeMode)
+            message = FeedUtils.strings.GetStringFromName(
+                        "subscribe-feedAdded");
+          if (win.mActionMode == win.kUpdateMode)
+          {
+            win.removeFeed(false);
+            message = FeedUtils.strings.GetStringFromName(
+                        "subscribe-feedUpdated");
+          }
+          if (win.mActionMode == win.kMoveMode)
+            message = FeedUtils.strings.GetStringFromName(
+                        "subscribe-feedMoved");
+          if (win.mActionMode == win.kCopyMode)
+            message = FeedUtils.strings.GetStringFromName(
+                        "subscribe-feedCopied");
+
+          win.selectFeed(feed, parentIndex);
+        }
+      }
+      else
+      {
+        // Non success.  Remove intermediate traces from the feeds database.
+        // But only if we're not in verify mode.
+        if (win.mActionMode != win.kVerifyUrlMode &&
+            feed && feed.url && feed.server)
+          FeedUtils.deleteFeed(FeedUtils.rdf.GetResource(feed.url),
+                               feed.server,
+                               feed.server.rootFolder);
+
+        if (aErrorCode == FeedUtils.kNewsBlogInvalidFeed)
+          message = FeedUtils.strings.GetStringFromName(
+                      "subscribe-feedNotValid");
+        if (aErrorCode == FeedUtils.kNewsBlogRequestFailure)
+          message = FeedUtils.strings.GetStringFromName(
+                      "subscribe-networkError");
+        if (aErrorCode == FeedUtils.kNewsBlogFileError)
+          message = FeedUtils.strings.GetStringFromName(
+                      "subscribe-errorOpeningFile");
+        if (aErrorCode == FeedUtils.kNewsBlogBadCertError) {
+          let host = Services.io.newURI(feed.url, null, null).host;
+          message = FeedUtils.strings.formatStringFromName(
+                      "newsblog-badCertError", [host], 1);
+        }
+        if (aErrorCode == FeedUtils.kNewsBlogNoAuthError)
+          message = FeedUtils.strings.GetStringFromName(
+                      "subscribe-noAuthError");
+
+        if (win.mActionMode != win.kUpdateMode &&
+            win.mActionMode != win.kVerifyUrlMode)
+          // Re-enable the add button if subscribe failed.
+          document.getElementById("addFeed").removeAttribute("disabled");
+        if (win.mActionMode == win.kVerifyUrlMode)
+          // Re-enable the update button if verify failed.
+          document.getElementById("editFeed").removeAttribute("disabled");
+      }
+
+      win.mActionMode = null;
+      win.clearStatusInfo();
+      let code = feed.url.startsWith("http") ? aErrorCode : null;
+      win.updateStatusItem("statusText", message, code);
+    },
+
+    // This gets called after the RSS parser finishes storing a feed item to
+    // disk.  aCurrentFeedItems is an integer corresponding to how many feed
+    // items have been downloaded so far.  aMaxFeedItems is an integer
+    // corresponding to the total number of feed items to download.
+    onFeedItemStored: function (feed, aCurrentFeedItems, aMaxFeedItems)
+    {
+      window.focus();
+      let message = FeedUtils.strings.formatStringFromName(
+                      "subscribe-gettingFeedItems",
+                      [aCurrentFeedItems, aMaxFeedItems], 2);
+      FeedSubscriptions.updateStatusItem("statusText", message);
+      this.onProgress(feed, aCurrentFeedItems, aMaxFeedItems);
+    },
+
+    onProgress: function(feed, aProgress, aProgressMax, aLengthComputable)
+    {
+      FeedSubscriptions.updateStatusItem("progressMeter",
+                                         (aProgress * 100) / aProgressMax);
+    }
+  },
+
+  // Status routines.
+  updateStatusItem: function(aID, aValue, aErrorCode)
+  {
+    let el = document.getElementById(aID);
+    if (el.getAttribute("collapsed"))
+      el.removeAttribute("collapsed");
+
+    if (aID == "progressMeter")
+      el.setAttribute("mode", aValue == "?" ? "undetermined" : "determined");
+
+    if (aID == "statusText")
+      el.textContent = aValue;
+    else
+      el.value = aValue;
+
+    el = document.getElementById("validationText");
+    if (aErrorCode == FeedUtils.kNewsBlogInvalidFeed)
+      el.removeAttribute("collapsed");
+    else
+      el.setAttribute("collapsed", true);
+
+    el = document.getElementById("addCertException");
+    if (aErrorCode == FeedUtils.kNewsBlogBadCertError)
+      el.removeAttribute("collapsed");
+    else
+      el.setAttribute("collapsed", true);
+  },
+
+  clearStatusInfo: function()
+  {
+    document.getElementById("statusText").textContent = "";
+    document.getElementById("progressMeter").collapsed = true;
+    document.getElementById("validationText").collapsed = true;
+    document.getElementById("addCertException").collapsed = true;
+  },
+
+  checkValidation: function(aEvent)
+  {
+    if (aEvent.button != 0)
+      return;
+
+    let validationSite = "http://validator.w3.org";
+    let validationQuery = "http://validator.w3.org/feed/check.cgi?url=";
+
+    if (this.mMainWin)
+    {
+      let tabmail = this.mMainWin.document.getElementById("tabmail");
+      if (tabmail)
+      {
+        let feedLocation = document.getElementById("locationValue").value;
+        let url = validationQuery + encodeURIComponent(feedLocation);
+
+        this.mMainWin.focus();
+        this.mMainWin.openContentTab(url, "tab", "^" + validationSite);
+        FeedUtils.log.debug("checkValidation: query url - " + url);
+      }
+    }
+    aEvent.stopPropagation();
+  },
+
+  addCertExceptionDialog: function()
+  {
+    let feedURL = document.getElementById("locationValue").value.trim();
+    let params = { exceptionAdded : false,
+                   location: feedURL,
+                   prefetchCert: true };
+    window.openDialog("chrome://pippki/content/exceptionDialog.xul",
+                      "", "chrome,centerscreen,modal", params);
+    if (params.exceptionAdded)
+      this.clearStatusInfo();
+  },
+
+  // Listener for folder pane changes.
+  FolderListener: {
+    get feedWindow() {
+      let subscriptionsWindow =
+        Services.wm.getMostRecentWindow("Mail:News-BlogSubscriptions");
+      return subscriptionsWindow ? subscriptionsWindow.FeedSubscriptions : null;
+    },
+
+    get currentSelectedIndex() {
+      return this.feedWindow ? this.feedWindow.mView.selection.currentIndex : -1;
+    },
+
+    get currentSelectedItem() {
+      return this.feedWindow ? this.feedWindow.mView.currentItem : null;
+    },
+
+    folderAdded: function(aFolder)
+    {
+      if (aFolder.server.type != "rss" ||
+          FeedUtils.isInTrash(aFolder))
+        return;
+
+      let parentFolder = aFolder.isServer ? aFolder : aFolder.parent;
+      FeedUtils.log.debug("folderAdded: folder:parent - " + aFolder.name + ":" +
+                          (parentFolder ? parentFolder.filePath.path : "(null)"));
+
+      if (!parentFolder || !this.feedWindow)
+        return;
+
+      let feedWindow = this.feedWindow;
+      let curSelIndex = this.currentSelectedIndex;
+      let curSelItem = this.currentSelectedItem;
+      let firstVisRow = feedWindow.mView.treeBox.getFirstVisibleRow();
+      let indexInView = feedWindow.mView.getItemInViewIndex(parentFolder);
+      let open = indexInView != null;
+
+      if (aFolder.isServer)
+      {
+        if (indexInView != null)
+          // Existing account root folder in the view.
+          open = feedWindow.mView.getItemAtIndex(indexInView).open;
+        else
+        {
+          // Add the account root folder to the view.
+          feedWindow.mFeedContainers.push(feedWindow.makeFolderObject(parentFolder, 0));
+          feedWindow.mView.mRowCount++;
+          feedWindow.mTree.view = feedWindow.mView;
+          feedWindow.mView.treeBox.scrollToRow(firstVisRow);
+          return;
+        }
+      }
+
+      // Rebuild the added folder's parent item in the tree row cache.
+      feedWindow.selectFolder(parentFolder, { select: false,
+                                              open: open,
+                                              newFolder: parentFolder });
+
+      if (indexInView == null || !curSelItem)
+        // Folder isn't in the tree view, no need to update the view.
+        return;
+
+      let parentIndex = feedWindow.mView.getParentIndex(indexInView);
+      if (parentIndex == feedWindow.mView.kRowIndexUndefined)
+        // Root folder is its own parent.
+        parentIndex = indexInView;
+      if (open)
+      {
+        // Close an open parent (or root) folder.
+        feedWindow.mView.toggle(parentIndex);
+        feedWindow.mView.toggleOpenState(parentIndex);
+      }
+      feedWindow.mView.treeBox.scrollToRow(firstVisRow);
+
+      if (curSelItem.container)
+        feedWindow.selectFolder(curSelItem.folder, { open: curSelItem.open });
+      else
+        feedWindow.selectFeed({ folder: curSelItem.parentFolder,
+                                url: curSelItem.url }, parentIndex);
+    },
+
+    folderDeleted: function(aFolder)
+    {
+      if (aFolder.server.type != "rss" || FeedUtils.isInTrash(aFolder))
+        return;
+
+      FeedUtils.log.debug("folderDeleted: folder - " + aFolder.name);
+      if (!this.feedWindow)
+        return;
+
+      let feedWindow = this.feedWindow;
+      let curSelIndex = this.currentSelectedIndex;
+      let indexInView = feedWindow.mView.getItemInViewIndex(aFolder);
+      let open = indexInView != null;
+
+      // Delete the folder from the tree row cache.
+      feedWindow.selectFolder(aFolder, { select: false, open: false, remove: true });
+
+      if (!open || curSelIndex < 0)
+        // Folder isn't in the tree view, no need to update the view.
+        return;
+
+      let select =
+        indexInView == curSelIndex ||
+        feedWindow.mView.isIndexChildOfParentIndex(indexInView, curSelIndex);
+      feedWindow.mView.removeItemAtIndex(indexInView, !select);
+    },
+
+    folderRenamed: function(aOrigFolder, aNewFolder)
+    {
+      if (aNewFolder.server.type != "rss" || FeedUtils.isInTrash(aNewFolder))
+        return;
+
+      FeedUtils.log.debug("folderRenamed: old:new - " +
+                          aOrigFolder.name + ":" + aNewFolder.name);
+      if (!this.feedWindow)
+        return;
+
+      let feedWindow = this.feedWindow;
+      let curSelIndex = this.currentSelectedIndex;
+      let curSelItem = this.currentSelectedItem;
+      let firstVisRow = feedWindow.mView.treeBox.getFirstVisibleRow();
+      let indexInView = feedWindow.mView.getItemInViewIndex(aOrigFolder);
+      let open = indexInView != null;
+
+      // Rebuild the renamed folder's item in the tree row cache.
+      feedWindow.selectFolder(aOrigFolder, { select: false,
+                                             open: open,
+                                             newFolder: aNewFolder });
+
+      if (!open || !curSelItem)
+        // Folder isn't in the tree view, no need to update the view.
+        return;
+
+      let select =
+        indexInView == curSelIndex ||
+        feedWindow.mView.isIndexChildOfParentIndex(indexInView, curSelIndex);
+      let parentIndex = feedWindow.mView.getParentIndex(indexInView);
+      if (parentIndex == feedWindow.mView.kRowIndexUndefined)
+        // Root folder is its own parent.
+        parentIndex = indexInView;
+      feedWindow.mView.toggle(parentIndex);
+      feedWindow.mView.toggleOpenState(parentIndex);
+      feedWindow.mView.treeBox.scrollToRow(firstVisRow);
+
+      if (curSelItem.container) {
+        if (curSelItem.folder == aOrigFolder)
+          feedWindow.selectFolder(aNewFolder, { open: curSelItem.open });
+        else if (select)
+          feedWindow.mView.selection.select(indexInView);
+        else
+          feedWindow.selectFolder(curSelItem.folder, { open: curSelItem.open });
+      }
+      else
+        feedWindow.selectFeed({ folder: curSelItem.parentFolder.rootFolder,
+                                url: curSelItem.url }, parentIndex);
+    },
+
+    folderMoveCopyCompleted: function(aMove, aSrcFolder, aDestFolder)
+    {
+      if (aDestFolder.server.type != "rss")
+        return;
+
+      FeedUtils.log.debug("folderMoveCopyCompleted: move:src:dest - " +
+                          aMove + ":" + aSrcFolder.name + ":" + aDestFolder.name);
+      if (!this.feedWindow)
+        return;
+
+      let feedWindow = this.feedWindow;
+      let curSelIndex = this.currentSelectedIndex;
+      let curSelItem = this.currentSelectedItem;
+      let firstVisRow = feedWindow.mView.treeBox.getFirstVisibleRow();
+      let indexInView = feedWindow.mView.getItemInViewIndex(aSrcFolder);
+      let destIndexInView = feedWindow.mView.getItemInViewIndex(aDestFolder);
+      let open = indexInView != null || destIndexInView != null;
+      let parentIndex = feedWindow.mView.getItemInViewIndex(aDestFolder.parent ||
+                                                            aDestFolder);
+      let select =
+        indexInView == curSelIndex ||
+        feedWindow.mView.isIndexChildOfParentIndex(indexInView, curSelIndex);
+
+      if (aMove)
+      {
+        this.folderDeleted(aSrcFolder);
+        if (aDestFolder.getFlag(Ci.nsMsgFolderFlags.Trash))
+          return;
+      }
+
+      setTimeout(function() {
+        // State on disk needs to settle before a folder object can be rebuilt.
+        feedWindow.selectFolder(aDestFolder, { select: false,
+                                               open: open || select,
+                                               newFolder: aDestFolder });
+
+        if (!open || !curSelItem)
+          // Folder isn't in the tree view, no need to update the view.
+          return;
+
+        feedWindow.mView.toggle(parentIndex);
+        feedWindow.mView.toggleOpenState(parentIndex);
+        feedWindow.mView.treeBox.scrollToRow(firstVisRow);
+
+        if (curSelItem.container) {
+          if (curSelItem.folder == aSrcFolder || select)
+            feedWindow.selectFolder(aDestFolder, { open: true });
+          else
+            feedWindow.selectFolder(curSelItem.folder, { open: curSelItem.open });
+        }
+        else
+          feedWindow.selectFeed({ folder: curSelItem.parentFolder.rootFolder,
+                                  url: curSelItem.url }, null);
+      }, 50);
+    }
+  },
+
+  /* *************************************************************** */
+  /* OPML Functions                                                  */
+  /* *************************************************************** */
+
+  get brandShortName() {
+    let brandBundle = document.getElementById("bundle_brand");
+    return brandBundle ? brandBundle.getString("brandShortName") : "";
+  },
+
+/**
+ * Export feeds as opml file Save As filepicker function.
+ * 
+ * @param  bool aList - if true, exporting as list; if false (default)
+ *                      exporting feeds in folder structure - used for title.
+ * @return nsILocalFile or null.
+ */
+  opmlPickSaveAsFile: function(aList)
+  {
+    let accountName = this.mRSSServer.rootFolder.prettyName;
+    let fileName = FeedUtils.strings.formatStringFromName(
+                     "subscribe-OPMLExportDefaultFileName",
+                     [this.brandShortName, accountName], 2);
+    let title = aList ? FeedUtils.strings.formatStringFromName(
+                          "subscribe-OPMLExportTitleList", [accountName], 1) :
+                        FeedUtils.strings.formatStringFromName(
+                          "subscribe-OPMLExportTitleStruct", [accountName], 1);
+    let fp = Cc["@mozilla.org/filepicker;1"].createInstance(Ci.nsIFilePicker);
+
+    fp.defaultString = fileName;
+    fp.defaultExtension = "opml";
+    if (this.opmlLastSaveAsDir && (this.opmlLastSaveAsDir instanceof Ci.nsILocalFile))
+      fp.displayDirectory = this.opmlLastSaveAsDir;
+
+    let opmlFilterText = FeedUtils.strings.GetStringFromName(
+                           "subscribe-OPMLExportOPMLFilesFilterText");
+    fp.appendFilter(opmlFilterText, "*.opml");
+    fp.appendFilters(Ci.nsIFilePicker.filterAll);
+    fp.filterIndex = 0;
+    fp.init(window, title, Ci.nsIFilePicker.modeSave);
+
+    if (fp.show() != Ci.nsIFilePicker.returnCancel && fp.file)
+    {
+      this.opmlLastSaveAsDir = fp.file.parent;
+      return fp.file;
+    }
+
+    return null;
+  },
+
+/**
+ * Import feeds opml file Open filepicker function.
+ * 
+ * @return nsILocalFile or null.
+ */
+  opmlPickOpenFile: function()
+  {
+    let title = FeedUtils.strings.GetStringFromName("subscribe-OPMLImportTitle");
+    let fp = Cc["@mozilla.org/filepicker;1"].createInstance(Ci.nsIFilePicker);
+
+    fp.defaultString = "";
+    if (this.opmlLastOpenDir && (this.opmlLastOpenDir instanceof Ci.nsILocalFile))
+      fp.displayDirectory = this.opmlLastOpenDir;
+
+    let opmlFilterText = FeedUtils.strings.GetStringFromName(
+                           "subscribe-OPMLExportOPMLFilesFilterText");
+    fp.appendFilter(opmlFilterText, "*.opml");
+    fp.appendFilters(Ci.nsIFilePicker.filterXML);
+    fp.appendFilters(Ci.nsIFilePicker.filterAll);
+    fp.init(window, title, Ci.nsIFilePicker.modeOpen);
+
+    if (fp.show() != Ci.nsIFilePicker.returnCancel && fp.file)
+    {
+      this.opmlLastOpenDir = fp.file.parent;
+      return fp.file;
+    }
+
+    return null;
+  },
+
+  exportOPML: function(aEvent)
+  {
+    // Account folder must be selected.
+    let item = this.mView.currentItem;
+    if (!item || !item.folder || !item.folder.isServer)
+      return;
+
+    this.mRSSServer = item.folder.server;
+    let rootFolder = this.mRSSServer.rootFolder;
+    let exportAsList = aEvent.ctrlKey;
+    let SPACES2 = "  ";
+    let SPACES4 = "    ";
+
+    if (this.mRSSServer.rootFolder.hasSubFolders)
+    {
+      let opmlDoc = document.implementation.createDocument("", "opml", null);
+      let opmlRoot = opmlDoc.documentElement;
+      opmlRoot.setAttribute("version", "1.0");
+      opmlRoot.setAttribute("xmlns:fz", "urn:forumzilla:");
+
+      this.generatePPSpace(opmlRoot, SPACES2);
+
+      // Make the <head> element.
+      let head = opmlDoc.createElement("head");
+      this.generatePPSpace(head, SPACES4);
+      let titleText = FeedUtils.strings.formatStringFromName(
+                        "subscribe-OPMLExportFileDialogTitle",
+                        [this.brandShortName, rootFolder.prettyName], 2);
+      let title = opmlDoc.createElement("title");
+      title.appendChild(opmlDoc.createTextNode(titleText));
+      head.appendChild(title);
+      this.generatePPSpace(head, SPACES4);
+      let dt = opmlDoc.createElement("dateCreated");
+      dt.appendChild(opmlDoc.createTextNode((new Date()).toUTCString()));
+      head.appendChild(dt);
+      this.generatePPSpace(head, SPACES2);
+      opmlRoot.appendChild(head);
+
+      this.generatePPSpace(opmlRoot, SPACES2);
+
+      // Add <outline>s to the <body>.
+      let body = opmlDoc.createElement("body");
+      if (exportAsList)
+        this.generateOutlineList(rootFolder, body, SPACES4.length + 2);
+      else
+        this.generateOutlineStruct(rootFolder, body, SPACES4.length);
+
+      this.generatePPSpace(body, SPACES2);
+
+      if (!body.childElementCount)
+        // No folders/feeds.
+        return;
+
+      opmlRoot.appendChild(body);
+      this.generatePPSpace(opmlRoot, "");
+
+      let serializer = new XMLSerializer();
+
+      if (FeedUtils.log.level <= Log4Moz.Level.Debug)
+        FeedUtils.log.debug("exportOPML: opmlDoc -\n" +
+                            serializer.serializeToString(opmlDoc) + "\n");
+
+      // Get file to save from filepicker.
+      let saveAsFile = this.opmlPickSaveAsFile(exportAsList);
+      if (!saveAsFile)
+        return;
+
+      let fos = FileUtils.openSafeFileOutputStream(saveAsFile);
+      serializer.serializeToStream(opmlDoc, fos, "utf-8");
+      FileUtils.closeSafeFileOutputStream(fos);
+
+      let statusReport = FeedUtils.strings.formatStringFromName(
+                           "subscribe-OPMLExportDone", [saveAsFile.path], 1);
+      this.updateStatusItem("statusText", statusReport);
+    }
+  },
+
+  generatePPSpace: function(aNode, indentString)
+  {
+    aNode.appendChild(aNode.ownerDocument.createTextNode("\n"));
+    aNode.appendChild(aNode.ownerDocument.createTextNode(indentString));
+  },
+
+  generateOutlineList: function(baseFolder, parent, indentLevel)
+  {
+    // Pretty printing.
+    let indentString = " ".repeat(indentLevel - 2);
+
+    let feedOutline;
+    let folderEnumerator = baseFolder.subFolders;
+    while (folderEnumerator.hasMoreElements())
+    {
+      let folder = folderEnumerator.getNext().QueryInterface(Ci.nsIMsgFolder);
+      FeedUtils.log.debug("generateOutlineList: folder - " +
+                          folder.filePath.path);
+      if (!(folder instanceof Ci.nsIMsgFolder) ||
+          folder.getFlag(Ci.nsMsgFolderFlags.Trash) ||
+          folder.getFlag(Ci.nsMsgFolderFlags.Virtual))
+        continue;
+
+      FeedUtils.log.debug("generateOutlineList: CONTINUE folderName - " +
+                          folder.name);
+
+      if (folder.hasSubFolders)
+      {
+        FeedUtils.log.debug("generateOutlineList: has subfolders - " +
+                            folder.name);
+        // Recurse.
+        this.generateOutlineList(folder, parent, indentLevel);
+      }
+
+      // Add outline elements with xmlUrls.
+      let feeds = this.getFeedsInFolder(folder);
+      for (let feed of feeds)
+      {
+        FeedUtils.log.debug("generateOutlineList: folder has FEED url - " +
+                            folder.name + " : " + feed.url);
+        feedOutline = this.exportOPMLOutline(feed, parent.ownerDocument);
+        this.generatePPSpace(parent, indentString);
+        parent.appendChild(feedOutline);
+      }
+    }
+  },
+
+  generateOutlineStruct: function(baseFolder, parent, indentLevel)
+  {
+    // Pretty printing.
+    function indentString(len) { return " ".repeat(len - 2); };
+
+    let folderOutline, feedOutline;
+    let folderEnumerator = baseFolder.subFolders;
+    while (folderEnumerator.hasMoreElements())
+    {
+      let folder = folderEnumerator.getNext().QueryInterface(Ci.nsIMsgFolder);
+      FeedUtils.log.debug("generateOutlineStruct: folder - " +
+                          folder.filePath.path);
+      if (!(folder instanceof Ci.nsIMsgFolder) ||
+          folder.getFlag(Ci.nsMsgFolderFlags.Trash) ||
+          folder.getFlag(Ci.nsMsgFolderFlags.Virtual))
+        continue;
+
+      FeedUtils.log.debug("generateOutlineStruct: CONTINUE folderName - " +
+                          folder.name);
+
+      // Make a folder outline element.
+      folderOutline = parent.ownerDocument.createElement("outline");
+      folderOutline.setAttribute("title", folder.prettyName);
+      this.generatePPSpace(parent, indentString(indentLevel + 2));
+
+      if (folder.hasSubFolders)
+      {
+        FeedUtils.log.debug("generateOutlineStruct: has subfolders - " +
+                            folder.name);
+        // Recurse.
+        this.generateOutlineStruct(folder, folderOutline, indentLevel + 2);
+      }
+
+      let feeds = this.getFeedsInFolder(folder);
+      for (let feed of feeds)
+      {
+        // Add feed outline elements with xmlUrls.
+        FeedUtils.log.debug("generateOutlineStruct: folder has FEED url - "+
+                            folder.name + " : " + feed.url);
+        feedOutline = this.exportOPMLOutline(feed, parent.ownerDocument);
+        this.generatePPSpace(folderOutline, indentString(indentLevel + 4));
+        folderOutline.appendChild(feedOutline);
+      }
+
+      parent.appendChild(folderOutline);
+    }
+  },
+
+  exportOPMLOutline: function(aFeed, aDoc)
+  {
+    let outRv = aDoc.createElement("outline");
+    outRv.setAttribute("type", "rss");
+    outRv.setAttribute("title", aFeed.title);
+    outRv.setAttribute("text", aFeed.title);
+    outRv.setAttribute("version", "RSS");
+    outRv.setAttribute("fz:quickMode", aFeed.quickMode);
+    outRv.setAttribute("fz:options", JSON.stringify(aFeed.options));
+    outRv.setAttribute("xmlUrl", aFeed.url);
+    outRv.setAttribute("htmlUrl", aFeed.link);
+    return outRv;
+  },
+
+  importOPML: function()
+  {
+    // Account folder must be selected in subscribe dialog.
+    let item = this.mView ? this.mView.currentItem : null;
+    if (!item || !item.folder || !item.folder.isServer)
+      return;
+
+    let server = item.folder.server;
+    // Get file to open from filepicker.
+    let openFile = this.opmlPickOpenFile();
+    if (!openFile)
+      return;
+
+    this.mActionMode = this.kImportingOPML;
+    this.updateButtons(null);
+    this.selectFolder(item.folder, { select: false, open: true });
+    let statusReport = FeedUtils.strings.GetStringFromName("subscribe-loading");
+    this.updateStatusItem("statusText", statusReport);
+    // If there were a getElementsByAttribute in html, we could go determined...
+    this.updateStatusItem("progressMeter", "?");
+
+    if (!this.importOPMLFile(openFile, server, this.importOPMLFinished)) {
+      this.mActionMode = null;
+      this.updateButtons(item);
+      this.clearStatusInfo();
+    }
+  },
+
+/**
+ * Import opml file into a feed account.  Used by the Subscribe dialog and
+ * the Import wizard.
+ * 
+ * @param  nsILocalFile aFile           - the opml file.
+ * @param  nsIMsgIncomingServer aServer - the account server.
+ * @param  func aCallback               - callback function.
+ * 
+ * @return bool                         - false if error.
+ */
+  importOPMLFile: function(aFile, aServer, aCallback)
+  {
+    if (aServer && (aServer instanceof Ci.nsIMsgIncomingServer))
+      this.mRSSServer = aServer;
+
+    if (!aFile || !this.mRSSServer || !aCallback)
+      return false;
+
+    let opmlDom, statusReport;
+    let stream = Cc["@mozilla.org/network/file-input-stream;1"].
+                 createInstance(Ci.nsIFileInputStream);
+
+    // Read in file as raw bytes, so Expat can do the decoding for us.
+    try {
+      stream.init(aFile, FileUtils.MODE_RDONLY, FileUtils.PERMS_FILE, 0);
+      let parser = new DOMParser();
+      opmlDom = parser.parseFromStream(stream, null, stream.available(),
+                                       "application/xml");
+    }
+    catch(e) {
+      statusReport = FeedUtils.strings.GetStringFromName(
+                       "subscribe-errorOpeningFile");
+      Services.prompt.alert(window, null, statusReport);
+      return false;
+    }
+    finally {
+      stream.close();
+    }
+
+    let body = opmlDom ? opmlDom.querySelector("body") : null;
+
+    // Return if the OPML file is invalid or empty.
+    if (!body || !body.childElementCount ||
+      opmlDom.documentElement.tagName != "opml")
+    {
+      statusReport = FeedUtils.strings.formatStringFromName(
+                       "subscribe-OPMLImportInvalidFile", [aFile.leafName], 1);
+      Services.prompt.alert(window, null, statusReport);
+      return false;
+    }
+
+    this.importOPMLOutlines(body, this.mRSSServer, aCallback);
+    return true;
+  },
+
+  importOPMLOutlines: function(aBody, aRSSServer, aCallback)
+  {
+    let win = this;
+    let rssServer = aRSSServer;
+    let callback = aCallback;
+    let outline, feedFolder;
+    let badTag = false;
+    let firstFeedInFolderQuickMode = null;
+    let lastFolder;
+    let feedsAdded = 0;
+    let rssOutlines = 0;
+    let folderOutlines = 0;
+
+    function processor(aParentNode, aParentFolder)
+    {
+      FeedUtils.log.trace("importOPMLOutlines: PROCESSOR tag:name:childs - " +
+                          aParentNode.tagName + ":" +
+                          aParentNode.getAttribute("text") + ":" +
+                          aParentNode.childElementCount);
+      while (true)
+      {
+        if (aParentNode.tagName == "body" && !aParentNode.childElementCount)
+        {
+          // Finished.
+          let statusReport = win.importOPMLStatus(feedsAdded, rssOutlines);
+          callback(statusReport, lastFolder, win);
+          return;
+        }
+
+        outline = aParentNode.firstElementChild;
+        if (outline.tagName != "outline")
+        {
+          FeedUtils.log.info("importOPMLOutlines: skipping, node is not an " +
+                             "<outline> - <" + outline.tagName + ">");
+          badTag = true;
+          break;
+        }
+
+        let outlineName = outline.getAttribute("text") ||
+                          outline.getAttribute("title") ||
+                          outline.getAttribute("xmlUrl");
+        let feedUrl, folderURI;
+
+        if (outline.getAttribute("type") == "rss")
+        {
+          // A feed outline.
+          feedUrl = outline.getAttribute("xmlUrl") || outline.getAttribute("url");
+          if (!feedUrl)
+          {
+            FeedUtils.log.info("importOPMLOutlines: skipping, type=rss <outline> " +
+                               "has no url - " + outlineName);
+            break;
+          }
+
+          rssOutlines++;
+          feedFolder = aParentFolder;
+
+          if (FeedUtils.feedAlreadyExists(feedUrl, rssServer))
+          {
+            FeedUtils.log.info("importOPMLOutlines: feed already subscribed in account " +
+                               rssServer.prettyName + ", url - " + feedUrl);
+            break;
+          }
+
+          if (aParentNode.tagName == "outline" &&
+              aParentNode.getAttribute("type") != "rss")
+            // Parent is a folder, already created.
+            folderURI = feedFolder.URI;
+          else
+          {
+            // Parent is not a folder outline, likely the <body> in a flat list.
+            // Create feed's folder with feed's name and account rootFolder as
+            // parent of feed's folder.
+            // NOTE: Assume a type=rss outline must be a leaf and is not a
+            // direct parent of another type=rss outline; such a structure
+            // may lead to unintended nesting and inaccurate counts.
+          }
+
+          // Create the feed.
+          let quickMode = outline.hasAttribute("fz:quickMode") ?
+                            outline.getAttribute("fz:quickMode") == "true" :
+                            rssServer.getBoolValue("quickMode");
+          let options = outline.getAttribute("fz:options");
+          options = options ? JSON.parse(options) : null;
+
+          if (firstFeedInFolderQuickMode === null)
+            // The summary/web page pref applies to all feeds in a folder,
+            // though it is a property of an individual feed.  This can be
+            // set (and is obvious) in the subscribe dialog; ensure import
+            // doesn't leave mismatches if mismatched in the opml file.
+            firstFeedInFolderQuickMode = quickMode;
+          else
+            quickMode = firstFeedInFolderQuickMode;
+
+          let feedProperties = { feedName     : outlineName,
+                                 feedLocation : feedUrl,
+                                 server       : rssServer,
+                                 folderURI    : folderURI,
+                                 quickMode    : quickMode,
+                                 options      : options };
+
+          FeedUtils.log.info("importOPMLOutlines: importing feed: name, url - "+
+                             outlineName + ", " + feedUrl);
+
+          let feed = win.storeFeed(feedProperties);
+          if (outline.hasAttribute("htmlUrl"))
+            feed.link = outline.getAttribute("htmlUrl");
+
+          feed.createFolder();
+          if (!feed.folder)
+          {
+            // Non success. Remove intermediate traces from the feeds database.
+            if (feed && feed.url && feed.server)
+              FeedUtils.deleteFeed(FeedUtils.rdf.GetResource(feed.url),
+                                   feed.server,
+                                   feed.server.rootFolder);
+            FeedUtils.log.info("importOPMLOutlines: skipping, error creating folder - '" +
+                               feed.folderName + "' from outlineName - '" +
+                               outlineName + "' in parent folder " +
+                               aParentFolder.filePath.path);
+            badTag = true;
+            break;
+          }
+
+          // Add the feed to the databases.
+          FeedUtils.addFeed(feed);
+          // Feed correctly added.
+          feedsAdded++;
+          lastFolder = feed.folder;
+        }
+        else
+        {
+          // A folder outline. If a folder exists in the account structure at
+          // the same level as in the opml structure, feeds are placed into the
+          // existing folder.
+          let defaultName = FeedUtils.strings.GetStringFromName("ImportFeedsNew");
+          let folderName = FeedUtils.getSanitizedFolderName(aParentFolder,
+                                                            outlineName,
+                                                            defaultName,
+                                                            false);
+          try {
+            feedFolder = aParentFolder.getChildNamed(folderName);
+          }
+          catch (ex) {
+            // Folder not found, create it.
+            FeedUtils.log.info("importOPMLOutlines: creating folder - '" +
+                                folderName + "' from outlineName - '" +
+                                outlineName + "' in parent folder " +
+                                aParentFolder.filePath.path);
+            firstFeedInFolderQuickMode = null;
+            try {
+              feedFolder = aParentFolder.QueryInterface(Ci.nsIMsgLocalMailFolder).
+                                         createLocalSubfolder(folderName);
+              folderOutlines++;
+            }
+            catch (ex) {
+              // An error creating. Skip it.
+              FeedUtils.log.info("importOPMLOutlines: skipping, error creating folder - '" +
+                                  folderName + "' from outlineName - '" +
+                                  outlineName + "' in parent folder " +
+                                  aParentFolder.filePath.path);
+              let xfolder = aParentFolder.getChildNamed(folderName);
+              aParentFolder.propagateDelete(xfolder, true, null);
+              badTag = true;
+              break;
+            }
+          }
+        }
+        break;
+      }
+
+      if (!outline.childElementCount || badTag)
+      {
+        // Remove leaf nodes that are processed or bad tags from the opml dom,
+        // and go back to reparse.  This method lets us use setTimeout to
+        // prevent UI hang, in situations of both deep and shallow trees.
+        // A yield/generator.next() method is fine for shallow trees, but not
+        // the true recursion required for deeper trees; both the shallow loop
+        // and the recurse should give it up.
+        outline.remove();
+        badTag = false;
+        outline = aBody;
+        feedFolder = rssServer.rootFolder;
+      }
+
+      setTimeout(function() {
+        processor(outline, feedFolder);
+      }, 0);
+    }
+
+    processor(aBody, rssServer.rootFolder);
+  },
+
+  importOPMLStatus: function(aFeedsAdded, aRssOutlines, aFolderOutlines)
+  {
+    let statusReport;
+    if (aRssOutlines > aFeedsAdded)
+      statusReport = FeedUtils.strings.formatStringFromName("subscribe-OPMLImportStatus",
+        [PluralForm.get(aFeedsAdded,
+                        FeedUtils.strings.GetStringFromName("subscribe-OPMLImportUniqueFeeds"))
+                   .replace("#1", aFeedsAdded),
+         PluralForm.get(aRssOutlines,
+                        FeedUtils.strings.GetStringFromName("subscribe-OPMLImportFoundFeeds"))
+                   .replace("#1", aRssOutlines)], 2);
+    else
+      statusReport = PluralForm.get(aFeedsAdded,
+        FeedUtils.strings.GetStringFromName("subscribe-OPMLImportFeedCount"))
+                         .replace("#1", aFeedsAdded);
+
+    return statusReport;
+  },
+
+  importOPMLFinished: function(aStatusReport, aLastFolder, aWin)
+  {
+    if (aLastFolder)
+    {
+      aWin.selectFolder(aLastFolder, { select: false, newFolder: aLastFolder });
+      aWin.selectFolder(aLastFolder.parent);
+    }
+    aWin.mActionMode = null;
+    aWin.updateButtons(aWin.mView.currentItem);
+    aWin.clearStatusInfo();
+    aWin.updateStatusItem("statusText", aStatusReport);
+  }
+
+};