Add m-esr52 at 52.6.0

1 files changed, 2021 insertions, 0 deletions

diff --git a/browser/base/content/browser-places.js b/browser/base/content/browser-places.js
new file mode 100644
index 000000000..14e90cde2
--- /dev/null
+++ b/browser/base/content/browser-places.js
@@ -0,0 +1,2021 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var StarUI = {
+  _itemId: -1,
+  uri: null,
+  _batching: false,
+  _isNewBookmark: false,
+  _isComposing: false,
+  _autoCloseTimer: 0,
+  // The autoclose timer is diasbled if the user interacts with the
+  // popup, such as making a change through typing or clicking on
+  // the popup.
+  _autoCloseTimerEnabled: true,
+
+  _element: function(aID) {
+    return document.getElementById(aID);
+  },
+
+  // Edit-bookmark panel
+  get panel() {
+    delete this.panel;
+    var element = this._element("editBookmarkPanel");
+    // initially the panel is hidden
+    // to avoid impacting startup / new window performance
+    element.hidden = false;
+    element.addEventListener("keypress", this, false);
+    element.addEventListener("mousedown", this);
+    element.addEventListener("mouseout", this, false);
+    element.addEventListener("mousemove", this, false);
+    element.addEventListener("compositionstart", this, false);
+    element.addEventListener("compositionend", this, false);
+    element.addEventListener("input", this, false);
+    element.addEventListener("popuphidden", this, false);
+    element.addEventListener("popupshown", this, false);
+    return this.panel = element;
+  },
+
+  // Array of command elements to disable when the panel is opened.
+  get _blockedCommands() {
+    delete this._blockedCommands;
+    return this._blockedCommands =
+      ["cmd_close", "cmd_closeWindow"].map(id => this._element(id));
+  },
+
+  _blockCommands: function SU__blockCommands() {
+    this._blockedCommands.forEach(function (elt) {
+      // make sure not to permanently disable this item (see bug 409155)
+      if (elt.hasAttribute("wasDisabled"))
+        return;
+      if (elt.getAttribute("disabled") == "true") {
+        elt.setAttribute("wasDisabled", "true");
+      } else {
+        elt.setAttribute("wasDisabled", "false");
+        elt.setAttribute("disabled", "true");
+      }
+    });
+  },
+
+  _restoreCommandsState: function SU__restoreCommandsState() {
+    this._blockedCommands.forEach(function (elt) {
+      if (elt.getAttribute("wasDisabled") != "true")
+        elt.removeAttribute("disabled");
+      elt.removeAttribute("wasDisabled");
+    });
+  },
+
+  // nsIDOMEventListener
+  handleEvent(aEvent) {
+    switch (aEvent.type) {
+      case "mousemove":
+        clearTimeout(this._autoCloseTimer);
+        // The autoclose timer is not disabled on generic mouseout
+        // because the user may not have actually interacted with the popup.
+        break;
+      case "popuphidden":
+        clearTimeout(this._autoCloseTimer);
+        if (aEvent.originalTarget == this.panel) {
+          if (!this._element("editBookmarkPanelContent").hidden)
+            this.quitEditMode();
+
+          if (this._anchorToolbarButton) {
+            this._anchorToolbarButton.removeAttribute("open");
+            this._anchorToolbarButton = null;
+          }
+          this._restoreCommandsState();
+          this._itemId = -1;
+          if (this._batching)
+            this.endBatch();
+
+          if (this._uriForRemoval) {
+            if (this._isNewBookmark) {
+              if (!PlacesUtils.useAsyncTransactions) {
+                PlacesUtils.transactionManager.undoTransaction();
+                break;
+              }
+              PlacesTransactions().undo().catch(Cu.reportError);
+              break;
+            }
+            // Remove all bookmarks for the bookmark's url, this also removes
+            // the tags for the url.
+            if (!PlacesUIUtils.useAsyncTransactions) {
+              let itemIds = PlacesUtils.getBookmarksForURI(this._uriForRemoval);
+              for (let itemId of itemIds) {
+                let txn = new PlacesRemoveItemTransaction(itemId);
+                PlacesUtils.transactionManager.doTransaction(txn);
+              }
+              break;
+            }
+
+            PlacesTransactions.RemoveBookmarksForUrls([this._uriForRemoval])
+                              .transact().catch(Cu.reportError);
+          }
+        }
+        break;
+      case "keypress":
+        clearTimeout(this._autoCloseTimer);
+        this._autoCloseTimerEnabled = false;
+
+        if (aEvent.defaultPrevented) {
+          // The event has already been consumed inside of the panel.
+          break;
+        }
+
+        switch (aEvent.keyCode) {
+          case KeyEvent.DOM_VK_ESCAPE:
+            this.panel.hidePopup();
+            break;
+          case KeyEvent.DOM_VK_RETURN:
+            if (aEvent.target.classList.contains("expander-up") ||
+                aEvent.target.classList.contains("expander-down") ||
+                aEvent.target.id == "editBMPanel_newFolderButton" ||
+                aEvent.target.id == "editBookmarkPanelRemoveButton") {
+              // XXX Why is this necessary? The defaultPrevented check should
+              //    be enough.
+              break;
+            }
+            this.panel.hidePopup();
+            break;
+          // This case is for catching character-generating keypresses
+          case 0:
+            let accessKey = document.getElementById("key_close");
+            if (eventMatchesKey(aEvent, accessKey)) {
+                this.panel.hidePopup();
+            }
+            break;
+        }
+        break;
+      case "compositionend":
+        // After composition is committed, "mouseout" or something can set
+        // auto close timer.
+        this._isComposing = false;
+        break;
+      case "compositionstart":
+        if (aEvent.defaultPrevented) {
+          // If the composition was canceled, nothing to do here.
+          break;
+        }
+        this._isComposing = true;
+        // Explicit fall-through, during composition, panel shouldn't be
+        // hidden automatically.
+      case "input":
+        // Might have edited some text without keyboard events nor composition
+        // events. Fall-through to cancel auto close in such case.
+      case "mousedown":
+        clearTimeout(this._autoCloseTimer);
+        this._autoCloseTimerEnabled = false;
+        break;
+      case "mouseout":
+        if (!this._autoCloseTimerEnabled) {
+          // Don't autoclose the popup if the user has made a selection
+          // or keypress and then subsequently mouseout.
+          break;
+        }
+        // Explicit fall-through
+      case "popupshown":
+        // Don't handle events for descendent elements.
+        if (aEvent.target != aEvent.currentTarget) {
+          break;
+        }
+        // auto-close if new and not interacted with
+        if (this._isNewBookmark && !this._isComposing) {
+          // 3500ms matches the timeout that Pocket uses in
+          // browser/extensions/pocket/content/panels/js/saved.js
+          let delay = 3500;
+          if (this._closePanelQuickForTesting) {
+            delay /= 10;
+          }
+          clearTimeout(this._autoCloseTimer);
+          this._autoCloseTimer = setTimeout(() => {
+            if (!this.panel.mozMatchesSelector(":hover")) {
+              this.panel.hidePopup();
+            }
+          }, delay);
+          this._autoCloseTimerEnabled = true;
+        }
+        break;
+    }
+  },
+
+  _overlayLoaded: false,
+  _overlayLoading: false,
+  showEditBookmarkPopup: Task.async(function* (aNode, aAnchorElement, aPosition, aIsNewBookmark) {
+    // Slow double-clicks (not true double-clicks) shouldn't
+    // cause the panel to flicker.
+    if (this.panel.state == "showing" ||
+        this.panel.state == "open") {
+      return;
+    }
+
+    this._isNewBookmark = aIsNewBookmark;
+    this._uriForRemoval = "";
+    // TODO: Deprecate this once async transactions are enabled and the legacy
+    // transactions code is gone (bug 1131491) - we don't want addons to to use
+    // the  completeNodeLikeObjectForItemId, so it's better if they keep passing
+    // the item-id for now).
+    if (typeof(aNode) == "number") {
+      let itemId = aNode;
+      if (PlacesUIUtils.useAsyncTransactions) {
+        let guid = yield PlacesUtils.promiseItemGuid(itemId);
+        aNode = yield PlacesUIUtils.promiseNodeLike(guid);
+      }
+      else {
+        aNode = { itemId };
+        yield PlacesUIUtils.completeNodeLikeObjectForItemId(aNode);
+      }
+    }
+
+    // Performance: load the overlay the first time the panel is opened
+    // (see bug 392443).
+    if (this._overlayLoading)
+      return;
+
+    if (this._overlayLoaded) {
+      this._doShowEditBookmarkPanel(aNode, aAnchorElement, aPosition);
+      return;
+    }
+
+    this._overlayLoading = true;
+    document.loadOverlay(
+      "chrome://browser/content/places/editBookmarkOverlay.xul",
+      (function (aSubject, aTopic, aData) {
+        // Move the header (star, title, button) into the grid,
+        // so that it aligns nicely with the other items (bug 484022).
+        let header = this._element("editBookmarkPanelHeader");
+        let rows = this._element("editBookmarkPanelGrid").lastChild;
+        rows.insertBefore(header, rows.firstChild);
+        header.hidden = false;
+
+        this._overlayLoading = false;
+        this._overlayLoaded = true;
+        this._doShowEditBookmarkPanel(aNode, aAnchorElement, aPosition);
+      }).bind(this)
+    );
+  }),
+
+  _doShowEditBookmarkPanel: Task.async(function* (aNode, aAnchorElement, aPosition) {
+    if (this.panel.state != "closed")
+      return;
+
+    this._blockCommands(); // un-done in the popuphidden handler
+
+    this._element("editBookmarkPanelTitle").value =
+      this._isNewBookmark ?
+        gNavigatorBundle.getString("editBookmarkPanel.pageBookmarkedTitle") :
+        gNavigatorBundle.getString("editBookmarkPanel.editBookmarkTitle");
+
+    // No description; show the Done, Remove;
+    this._element("editBookmarkPanelDescription").textContent = "";
+    this._element("editBookmarkPanelBottomButtons").hidden = false;
+    this._element("editBookmarkPanelContent").hidden = false;
+
+    // The label of the remove button differs if the URI is bookmarked
+    // multiple times.
+    let bookmarks = PlacesUtils.getBookmarksForURI(gBrowser.currentURI);
+    let forms = gNavigatorBundle.getString("editBookmark.removeBookmarks.label");
+    let label = PluralForm.get(bookmarks.length, forms).replace("#1", bookmarks.length);
+    this._element("editBookmarkPanelRemoveButton").label = label;
+
+    // unset the unstarred state, if set
+    this._element("editBookmarkPanelStarIcon").removeAttribute("unstarred");
+
+    this._itemId = aNode.itemId;
+    this.beginBatch();
+
+    if (aAnchorElement) {
+      // Set the open=true attribute if the anchor is a
+      // descendent of a toolbarbutton.
+      let parent = aAnchorElement.parentNode;
+      while (parent) {
+        if (parent.localName == "toolbarbutton") {
+          break;
+        }
+        parent = parent.parentNode;
+      }
+      if (parent) {
+        this._anchorToolbarButton = parent;
+        parent.setAttribute("open", "true");
+      }
+    }
+    let panel = this.panel;
+    let target = panel;
+    if (target.parentNode) {
+      // By targeting the panel's parent and using a capturing listener, we
+      // can have our listener called before others waiting for the panel to
+      // be shown (which probably expect the panel to be fully initialized)
+      target = target.parentNode;
+    }
+    target.addEventListener("popupshown", function shownListener(event) {
+      if (event.target == panel) {
+        target.removeEventListener("popupshown", shownListener, true);
+
+        gEditItemOverlay.initPanel({ node: aNode
+                                   , hiddenRows: ["description", "location",
+                                                  "loadInSidebar", "keyword"]
+                                   , focusedElement: "preferred"});
+      }
+    }, true);
+
+    this.panel.openPopup(aAnchorElement, aPosition);
+  }),
+
+  panelShown:
+  function SU_panelShown(aEvent) {
+    if (aEvent.target == this.panel) {
+      if (this._element("editBookmarkPanelContent").hidden) {
+        // Note this isn't actually used anymore, we should remove this
+        // once we decide not to bring back the page bookmarked notification
+        this.panel.focus();
+      }
+    }
+  },
+
+  quitEditMode: function SU_quitEditMode() {
+    this._element("editBookmarkPanelContent").hidden = true;
+    this._element("editBookmarkPanelBottomButtons").hidden = true;
+    gEditItemOverlay.uninitPanel(true);
+  },
+
+  removeBookmarkButtonCommand: function SU_removeBookmarkButtonCommand() {
+    this._uriForRemoval = PlacesUtils.bookmarks.getBookmarkURI(this._itemId);
+    this.panel.hidePopup();
+  },
+
+  // Matching the way it is used in the Library, editBookmarkOverlay implements
+  // an instant-apply UI, having no batched-Undo/Redo support.
+  // However, in this context (the Star UI) we have a Cancel button whose
+  // expected behavior is to undo all the operations done in the panel.
+  // Sometime in the future this needs to be reimplemented using a
+  // non-instant apply code path, but for the time being, we patch-around
+  // editBookmarkOverlay so that all of the actions done in the panel
+  // are treated by PlacesTransactions as a single batch.  To do so,
+  // we start a PlacesTransactions batch when the star UI panel is shown, and
+  // we keep the batch ongoing until the panel is hidden.
+  _batchBlockingDeferred: null,
+  beginBatch() {
+    if (this._batching)
+      return;
+    if (PlacesUIUtils.useAsyncTransactions) {
+      this._batchBlockingDeferred = PromiseUtils.defer();
+      PlacesTransactions.batch(function* () {
+        yield this._batchBlockingDeferred.promise;
+      }.bind(this));
+    }
+    else {
+      PlacesUtils.transactionManager.beginBatch(null);
+    }
+    this._batching = true;
+  },
+
+  endBatch() {
+    if (!this._batching)
+      return;
+
+    if (PlacesUIUtils.useAsyncTransactions) {
+      this._batchBlockingDeferred.resolve();
+      this._batchBlockingDeferred = null;
+    }
+    else {
+      PlacesUtils.transactionManager.endBatch(false);
+    }
+    this._batching = false;
+  }
+};
+
+var PlacesCommandHook = {
+  /**
+   * Adds a bookmark to the page loaded in the given browser.
+   *
+   * @param aBrowser
+   *        a <browser> element.
+   * @param [optional] aParent
+   *        The folder in which to create a new bookmark if the page loaded in
+   *        aBrowser isn't bookmarked yet, defaults to the unfiled root.
+   * @param [optional] aShowEditUI
+   *        whether or not to show the edit-bookmark UI for the bookmark item
+   */
+  bookmarkPage: Task.async(function* (aBrowser, aParent, aShowEditUI) {
+    if (PlacesUIUtils.useAsyncTransactions) {
+      yield this._bookmarkPagePT(aBrowser, aParent, aShowEditUI);
+      return;
+    }
+
+    var uri = aBrowser.currentURI;
+    var itemId = PlacesUtils.getMostRecentBookmarkForURI(uri);
+    let isNewBookmark = itemId == -1;
+    if (isNewBookmark) {
+      // Bug 1148838 - Make this code work for full page plugins.
+      var title;
+      var description;
+      var charset;
+
+      let docInfo = yield this._getPageDetails(aBrowser);
+
+      try {
+        title = docInfo.isErrorPage ? PlacesUtils.history.getPageTitle(uri)
+                                    : aBrowser.contentTitle;
+        title = title || uri.spec;
+        description = docInfo.description;
+        charset = aBrowser.characterSet;
+      }
+      catch (e) { }
+
+      if (aShowEditUI && isNewBookmark) {
+        // If we bookmark the page here but open right into a cancelable
+        // state (i.e. new bookmark in Library), start batching here so
+        // all of the actions can be undone in a single undo step.
+        StarUI.beginBatch();
+      }
+
+      var parent = aParent !== undefined ?
+                   aParent : PlacesUtils.unfiledBookmarksFolderId;
+      var descAnno = { name: PlacesUIUtils.DESCRIPTION_ANNO, value: description };
+      var txn = new PlacesCreateBookmarkTransaction(uri, parent,
+                                                    PlacesUtils.bookmarks.DEFAULT_INDEX,
+                                                    title, null, [descAnno]);
+      PlacesUtils.transactionManager.doTransaction(txn);
+      itemId = txn.item.id;
+      // Set the character-set.
+      if (charset && !PrivateBrowsingUtils.isBrowserPrivate(aBrowser))
+        PlacesUtils.setCharsetForURI(uri, charset);
+    }
+
+    // Revert the contents of the location bar
+    gURLBar.handleRevert();
+
+    // If it was not requested to open directly in "edit" mode, we are done.
+    if (!aShowEditUI)
+      return;
+
+    // Try to dock the panel to:
+    // 1. the bookmarks menu button
+    // 2. the identity icon
+    // 3. the content area
+    if (BookmarkingUI.anchor) {
+      StarUI.showEditBookmarkPopup(itemId, BookmarkingUI.anchor,
+                                   "bottomcenter topright", isNewBookmark);
+      return;
+    }
+
+    let identityIcon = document.getElementById("identity-icon");
+    if (isElementVisible(identityIcon)) {
+      StarUI.showEditBookmarkPopup(itemId, identityIcon,
+                                   "bottomcenter topright", isNewBookmark);
+    } else {
+      StarUI.showEditBookmarkPopup(itemId, aBrowser, "overlap", isNewBookmark);
+    }
+  }),
+
+  // TODO: Replace bookmarkPage code with this function once legacy
+  // transactions are removed.
+  _bookmarkPagePT: Task.async(function* (aBrowser, aParentId, aShowEditUI) {
+    let url = new URL(aBrowser.currentURI.spec);
+    let info = yield PlacesUtils.bookmarks.fetch({ url });
+    let isNewBookmark = !info;
+    if (!info) {
+      let parentGuid = aParentId !== undefined ?
+                         yield PlacesUtils.promiseItemGuid(aParentId) :
+                         PlacesUtils.bookmarks.unfiledGuid;
+      info = { url, parentGuid };
+      // Bug 1148838 - Make this code work for full page plugins.
+      let description = null;
+      let charset = null;
+
+      let docInfo = yield this._getPageDetails(aBrowser);
+
+      try {
+        info.title = docInfo.isErrorPage ?
+          (yield PlacesUtils.promisePlaceInfo(aBrowser.currentURI)).title :
+          aBrowser.contentTitle;
+        info.title = info.title || url.href;
+        description = docInfo.description;
+        charset = aBrowser.characterSet;
+      }
+      catch (e) {
+        Components.utils.reportError(e);
+      }
+
+      if (aShowEditUI && isNewBookmark) {
+        // If we bookmark the page here but open right into a cancelable
+        // state (i.e. new bookmark in Library), start batching here so
+        // all of the actions can be undone in a single undo step.
+        StarUI.beginBatch();
+      }
+
+      if (description) {
+        info.annotations = [{ name: PlacesUIUtils.DESCRIPTION_ANNO
+                            , value: description }];
+      }
+
+      info.guid = yield PlacesTransactions.NewBookmark(info).transact();
+
+      // Set the character-set
+      if (charset && !PrivateBrowsingUtils.isBrowserPrivate(aBrowser))
+         PlacesUtils.setCharsetForURI(makeURI(url.href), charset);
+    }
+
+    // Revert the contents of the location bar
+    gURLBar.handleRevert();
+
+    // If it was not requested to open directly in "edit" mode, we are done.
+    if (!aShowEditUI)
+      return;
+
+    let node = yield PlacesUIUtils.promiseNodeLikeFromFetchInfo(info);
+
+    // Try to dock the panel to:
+    // 1. the bookmarks menu button
+    // 2. the identity icon
+    // 3. the content area
+    if (BookmarkingUI.anchor) {
+      StarUI.showEditBookmarkPopup(node, BookmarkingUI.anchor,
+                                   "bottomcenter topright", isNewBookmark);
+      return;
+    }
+
+    let identityIcon = document.getElementById("identity-icon");
+    if (isElementVisible(identityIcon)) {
+      StarUI.showEditBookmarkPopup(node, identityIcon,
+                                   "bottomcenter topright", isNewBookmark);
+    } else {
+      StarUI.showEditBookmarkPopup(node, aBrowser, "overlap", isNewBookmark);
+    }
+  }),
+
+  _getPageDetails(browser) {
+    return new Promise(resolve => {
+      let mm = browser.messageManager;
+      mm.addMessageListener("Bookmarks:GetPageDetails:Result", function listener(msg) {
+        mm.removeMessageListener("Bookmarks:GetPageDetails:Result", listener);
+        resolve(msg.data);
+      });
+
+      mm.sendAsyncMessage("Bookmarks:GetPageDetails", { })
+    });
+  },
+
+  /**
+   * Adds a bookmark to the page loaded in the current tab.
+   */
+  bookmarkCurrentPage: function PCH_bookmarkCurrentPage(aShowEditUI, aParent) {
+    this.bookmarkPage(gBrowser.selectedBrowser, aParent, aShowEditUI);
+  },
+
+  /**
+   * Adds a bookmark to the page targeted by a link.
+   * @param aParent
+   *        The folder in which to create a new bookmark if aURL isn't
+   *        bookmarked.
+   * @param aURL (string)
+   *        the address of the link target
+   * @param aTitle
+   *        The link text
+   * @param [optional] aDescription
+   *        The linked page description, if available
+   */
+  bookmarkLink: Task.async(function* (aParentId, aURL, aTitle, aDescription="") {
+    let node = yield PlacesUIUtils.fetchNodeLike({ url: aURL });
+    if (node) {
+      PlacesUIUtils.showBookmarkDialog({ action: "edit"
+                                       , node
+                                       }, window.top);
+      return;
+    }
+
+    let ip = new InsertionPoint(aParentId,
+                                PlacesUtils.bookmarks.DEFAULT_INDEX,
+                                Components.interfaces.nsITreeView.DROP_ON);
+    PlacesUIUtils.showBookmarkDialog({ action: "add"
+                                     , type: "bookmark"
+                                     , uri: makeURI(aURL)
+                                     , title: aTitle
+                                     , description: aDescription
+                                     , defaultInsertionPoint: ip
+                                     , hiddenRows: [ "description"
+                                                   , "location"
+                                                   , "loadInSidebar"
+                                                   , "keyword" ]
+                                     }, window.top);
+  }),
+
+  /**
+   * List of nsIURI objects characterizing the tabs currently open in the
+   * browser, modulo pinned tabs.  The URIs will be in the order in which their
+   * corresponding tabs appeared and duplicates are discarded.
+   */
+  get uniqueCurrentPages() {
+    let uniquePages = {};
+    let URIs = [];
+
+    gBrowser.visibleTabs.forEach(tab => {
+      let browser = tab.linkedBrowser;
+      let uri = browser.currentURI;
+      let title = browser.contentTitle || tab.label;
+      let spec = uri.spec;
+      if (!tab.pinned && !(spec in uniquePages)) {
+        uniquePages[spec] = null;
+        URIs.push({ uri, title });
+      }
+    });
+    return URIs;
+  },
+
+  /**
+   * Adds a folder with bookmarks to all of the currently open tabs in this
+   * window.
+   */
+  bookmarkCurrentPages: function PCH_bookmarkCurrentPages() {
+    let pages = this.uniqueCurrentPages;
+    if (pages.length > 1) {
+    PlacesUIUtils.showBookmarkDialog({ action: "add"
+                                     , type: "folder"
+                                     , URIList: pages
+                                     , hiddenRows: [ "description" ]
+                                     }, window);
+    }
+  },
+
+  /**
+   * Updates disabled state for the "Bookmark All Tabs" command.
+   */
+  updateBookmarkAllTabsCommand:
+  function PCH_updateBookmarkAllTabsCommand() {
+    // There's nothing to do in non-browser windows.
+    if (window.location.href != getBrowserURL())
+      return;
+
+    // Disable "Bookmark All Tabs" if there are less than two
+    // "unique current pages".
+    goSetCommandEnabled("Browser:BookmarkAllTabs",
+                        this.uniqueCurrentPages.length >= 2);
+  },
+
+  /**
+   * Adds a Live Bookmark to a feed associated with the current page.
+   * @param     url
+   *            The nsIURI of the page the feed was attached to
+   * @title     title
+   *            The title of the feed. Optional.
+   * @subtitle  subtitle
+   *            A short description of the feed. Optional.
+   */
+  addLiveBookmark: Task.async(function *(url, feedTitle, feedSubtitle) {
+    let toolbarIP = new InsertionPoint(PlacesUtils.toolbarFolderId,
+                                       PlacesUtils.bookmarks.DEFAULT_INDEX,
+                                       Components.interfaces.nsITreeView.DROP_ON);
+
+    let feedURI = makeURI(url);
+    let title = feedTitle || gBrowser.contentTitle;
+    let description = feedSubtitle;
+    if (!description) {
+      description = (yield this._getPageDetails(gBrowser.selectedBrowser)).description;
+    }
+
+    PlacesUIUtils.showBookmarkDialog({ action: "add"
+                                     , type: "livemark"
+                                     , feedURI: feedURI
+                                     , siteURI: gBrowser.currentURI
+                                     , title: title
+                                     , description: description
+                                     , defaultInsertionPoint: toolbarIP
+                                     , hiddenRows: [ "feedLocation"
+                                                   , "siteLocation"
+                                                   , "description" ]
+                                     }, window);
+  }),
+
+  /**
+   * Opens the Places Organizer.
+   * @param   aLeftPaneRoot
+   *          The query to select in the organizer window - options
+   *          are: History, AllBookmarks, BookmarksMenu, BookmarksToolbar,
+   *          UnfiledBookmarks, Tags and Downloads.
+   */
+  showPlacesOrganizer: function PCH_showPlacesOrganizer(aLeftPaneRoot) {
+    var organizer = Services.wm.getMostRecentWindow("Places:Organizer");
+    // Due to bug 528706, getMostRecentWindow can return closed windows.
+    if (!organizer || organizer.closed) {
+      // No currently open places window, so open one with the specified mode.
+      openDialog("chrome://browser/content/places/places.xul",
+                 "", "chrome,toolbar=yes,dialog=no,resizable", aLeftPaneRoot);
+    }
+    else {
+      organizer.PlacesOrganizer.selectLeftPaneContainerByHierarchy(aLeftPaneRoot);
+      organizer.focus();
+    }
+  }
+};
+
+XPCOMUtils.defineLazyModuleGetter(this, "RecentlyClosedTabsAndWindowsMenuUtils",
+  "resource:///modules/sessionstore/RecentlyClosedTabsAndWindowsMenuUtils.jsm");
+
+// View for the history menu.
+function HistoryMenu(aPopupShowingEvent) {
+  // Workaround for Bug 610187.  The sidebar does not include all the Places
+  // views definitions, and we don't need them there.
+  // Defining the prototype inheritance in the prototype itself would cause
+  // browser.js to halt on "PlacesMenu is not defined" error.
+  this.__proto__.__proto__ = PlacesMenu.prototype;
+  PlacesMenu.call(this, aPopupShowingEvent,
+                  "place:sort=4&maxResults=15");
+}
+
+HistoryMenu.prototype = {
+  _getClosedTabCount() {
+    // SessionStore doesn't track the hidden window, so just return zero then.
+    if (window == Services.appShell.hiddenDOMWindow) {
+      return 0;
+    }
+
+    return SessionStore.getClosedTabCount(window);
+  },
+
+  toggleRecentlyClosedTabs: function HM_toggleRecentlyClosedTabs() {
+    // enable/disable the Recently Closed Tabs sub menu
+    var undoMenu = this._rootElt.getElementsByClassName("recentlyClosedTabsMenu")[0];
+
+    // no restorable tabs, so disable menu
+    if (this._getClosedTabCount() == 0)
+      undoMenu.setAttribute("disabled", true);
+    else
+      undoMenu.removeAttribute("disabled");
+  },
+
+  /**
+   * Populate when the history menu is opened
+   */
+  populateUndoSubmenu: function PHM_populateUndoSubmenu() {
+    var undoMenu = this._rootElt.getElementsByClassName("recentlyClosedTabsMenu")[0];
+    var undoPopup = undoMenu.firstChild;
+
+    // remove existing menu items
+    while (undoPopup.hasChildNodes())
+      undoPopup.removeChild(undoPopup.firstChild);
+
+    // no restorable tabs, so make sure menu is disabled, and return
+    if (this._getClosedTabCount() == 0) {
+      undoMenu.setAttribute("disabled", true);
+      return;
+    }
+
+    // enable menu
+    undoMenu.removeAttribute("disabled");
+
+    // populate menu
+    let tabsFragment = RecentlyClosedTabsAndWindowsMenuUtils.getTabsFragment(window, "menuitem");
+    undoPopup.appendChild(tabsFragment);
+  },
+
+  toggleRecentlyClosedWindows: function PHM_toggleRecentlyClosedWindows() {
+    // enable/disable the Recently Closed Windows sub menu
+    var undoMenu = this._rootElt.getElementsByClassName("recentlyClosedWindowsMenu")[0];
+
+    // no restorable windows, so disable menu
+    if (SessionStore.getClosedWindowCount() == 0)
+      undoMenu.setAttribute("disabled", true);
+    else
+      undoMenu.removeAttribute("disabled");
+  },
+
+  /**
+   * Populate when the history menu is opened
+   */
+  populateUndoWindowSubmenu: function PHM_populateUndoWindowSubmenu() {
+    let undoMenu = this._rootElt.getElementsByClassName("recentlyClosedWindowsMenu")[0];
+    let undoPopup = undoMenu.firstChild;
+
+    // remove existing menu items
+    while (undoPopup.hasChildNodes())
+      undoPopup.removeChild(undoPopup.firstChild);
+
+    // no restorable windows, so make sure menu is disabled, and return
+    if (SessionStore.getClosedWindowCount() == 0) {
+      undoMenu.setAttribute("disabled", true);
+      return;
+    }
+
+    // enable menu
+    undoMenu.removeAttribute("disabled");
+
+    // populate menu
+    let windowsFragment = RecentlyClosedTabsAndWindowsMenuUtils.getWindowsFragment(window, "menuitem");
+    undoPopup.appendChild(windowsFragment);
+  },
+
+  toggleTabsFromOtherComputers: function PHM_toggleTabsFromOtherComputers() {
+    // Enable/disable the Tabs From Other Computers menu. Some of the menus handled
+    // by HistoryMenu do not have this menuitem.
+    let menuitem = this._rootElt.getElementsByClassName("syncTabsMenuItem")[0];
+    if (!menuitem)
+      return;
+
+    if (!PlacesUIUtils.shouldShowTabsFromOtherComputersMenuitem()) {
+      menuitem.setAttribute("hidden", true);
+      return;
+    }
+
+    menuitem.setAttribute("hidden", false);
+  },
+
+  _onPopupShowing: function HM__onPopupShowing(aEvent) {
+    PlacesMenu.prototype._onPopupShowing.apply(this, arguments);
+
+    // Don't handle events for submenus.
+    if (aEvent.target != aEvent.currentTarget)
+      return;
+
+    this.toggleRecentlyClosedTabs();
+    this.toggleRecentlyClosedWindows();
+    this.toggleTabsFromOtherComputers();
+  },
+
+  _onCommand: function HM__onCommand(aEvent) {
+    let placesNode = aEvent.target._placesNode;
+    if (placesNode) {
+      if (!PrivateBrowsingUtils.isWindowPrivate(window))
+        PlacesUIUtils.markPageAsTyped(placesNode.uri);
+      openUILink(placesNode.uri, aEvent, { ignoreAlt: true });
+    }
+  }
+};
+
+/**
+ * Functions for handling events in the Bookmarks Toolbar and menu.
+ */
+var BookmarksEventHandler = {
+  /**
+   * Handler for click event for an item in the bookmarks toolbar or menu.
+   * Menus and submenus from the folder buttons bubble up to this handler.
+   * Left-click is handled in the onCommand function.
+   * When items are middle-clicked (or clicked with modifier), open in tabs.
+   * If the click came through a menu, close the menu.
+   * @param aEvent
+   *        DOMEvent for the click
+   * @param aView
+   *        The places view which aEvent should be associated with.
+   */
+  onClick: function BEH_onClick(aEvent, aView) {
+    // Only handle middle-click or left-click with modifiers.
+    let modifKey;
+    if (AppConstants.platform == "macosx") {
+      modifKey = aEvent.metaKey || aEvent.shiftKey;
+    } else {
+      modifKey = aEvent.ctrlKey || aEvent.shiftKey;
+    }
+
+    if (aEvent.button == 2 || (aEvent.button == 0 && !modifKey))
+      return;
+
+    var target = aEvent.originalTarget;
+    // If this event bubbled up from a menu or menuitem, close the menus.
+    // Do this before opening tabs, to avoid hiding the open tabs confirm-dialog.
+    if (target.localName == "menu" || target.localName == "menuitem") {
+      for (let node = target.parentNode; node; node = node.parentNode) {
+        if (node.localName == "menupopup")
+          node.hidePopup();
+        else if (node.localName != "menu" &&
+                 node.localName != "splitmenu" &&
+                 node.localName != "hbox" &&
+                 node.localName != "vbox" )
+          break;
+      }
+    }
+
+    if (target._placesNode && PlacesUtils.nodeIsContainer(target._placesNode)) {
+      // Don't open the root folder in tabs when the empty area on the toolbar
+      // is middle-clicked or when a non-bookmark item except for Open in Tabs)
+      // in a bookmarks menupopup is middle-clicked.
+      if (target.localName == "menu" || target.localName == "toolbarbutton")
+        PlacesUIUtils.openContainerNodeInTabs(target._placesNode, aEvent, aView);
+    }
+    else if (aEvent.button == 1) {
+      // left-clicks with modifier are already served by onCommand
+      this.onCommand(aEvent, aView);
+    }
+  },
+
+  /**
+   * Handler for command event for an item in the bookmarks toolbar.
+   * Menus and submenus from the folder buttons bubble up to this handler.
+   * Opens the item.
+   * @param aEvent
+   *        DOMEvent for the command
+   * @param aView
+   *        The places view which aEvent should be associated with.
+   */
+  onCommand: function BEH_onCommand(aEvent, aView) {
+    var target = aEvent.originalTarget;
+    if (target._placesNode)
+      PlacesUIUtils.openNodeWithEvent(target._placesNode, aEvent, aView);
+  },
+
+  fillInBHTooltip: function BEH_fillInBHTooltip(aDocument, aEvent) {
+    var node;
+    var cropped = false;
+    var targetURI;
+
+    if (aDocument.tooltipNode.localName == "treechildren") {
+      var tree = aDocument.tooltipNode.parentNode;
+      var tbo = tree.treeBoxObject;
+      var cell = tbo.getCellAt(aEvent.clientX, aEvent.clientY);
+      if (cell.row == -1)
+        return false;
+      node = tree.view.nodeForTreeIndex(cell.row);
+      cropped = tbo.isCellCropped(cell.row, cell.col);
+    }
+    else {
+      // Check whether the tooltipNode is a Places node.
+      // In such a case use it, otherwise check for targetURI attribute.
+      var tooltipNode = aDocument.tooltipNode;
+      if (tooltipNode._placesNode)
+        node = tooltipNode._placesNode;
+      else {
+        // This is a static non-Places node.
+        targetURI = tooltipNode.getAttribute("targetURI");
+      }
+    }
+
+    if (!node && !targetURI)
+      return false;
+
+    // Show node.label as tooltip's title for non-Places nodes.
+    var title = node ? node.title : tooltipNode.label;
+
+    // Show URL only for Places URI-nodes or nodes with a targetURI attribute.
+    var url;
+    if (targetURI || PlacesUtils.nodeIsURI(node))
+      url = targetURI || node.uri;
+
+    // Show tooltip for containers only if their title is cropped.
+    if (!cropped && !url)
+      return false;
+
+    var tooltipTitle = aDocument.getElementById("bhtTitleText");
+    tooltipTitle.hidden = (!title || (title == url));
+    if (!tooltipTitle.hidden)
+      tooltipTitle.textContent = title;
+
+    var tooltipUrl = aDocument.getElementById("bhtUrlText");
+    tooltipUrl.hidden = !url;
+    if (!tooltipUrl.hidden)
+      tooltipUrl.value = url;
+
+    // Show tooltip.
+    return true;
+  }
+};
+
+// Handles special drag and drop functionality for Places menus that are not
+// part of a Places view (e.g. the bookmarks menu in the menubar).
+var PlacesMenuDNDHandler = {
+  _springLoadDelayMs: 350,
+  _closeDelayMs: 500,
+  _loadTimer: null,
+  _closeTimer: null,
+  _closingTimerNode: null,
+
+  /**
+   * Called when the user enters the <menu> element during a drag.
+   * @param   event
+   *          The DragEnter event that spawned the opening.
+   */
+  onDragEnter: function PMDH_onDragEnter(event) {
+    // Opening menus in a Places popup is handled by the view itself.
+    if (!this._isStaticContainer(event.target))
+      return;
+
+    // If we re-enter the same menu or anchor before the close timer runs out,
+    // we should ensure that we do not close:
+    if (this._closeTimer && this._closingTimerNode === event.currentTarget) {
+      this._closeTimer.cancel();
+      this._closingTimerNode = null;
+      this._closeTimer = null;
+    }
+
+    PlacesControllerDragHelper.currentDropTarget = event.target;
+    let popup = event.target.lastChild;
+    if (this._loadTimer || popup.state === "showing" || popup.state === "open")
+      return;
+
+    this._loadTimer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+    this._loadTimer.initWithCallback(() => {
+      this._loadTimer = null;
+      popup.setAttribute("autoopened", "true");
+      popup.showPopup(popup);
+    }, this._springLoadDelayMs, Ci.nsITimer.TYPE_ONE_SHOT);
+    event.preventDefault();
+    event.stopPropagation();
+  },
+
+  /**
+   * Handles dragleave on the <menu> element.
+   */
+  onDragLeave: function PMDH_onDragLeave(event) {
+    // Handle menu-button separate targets.
+    if (event.relatedTarget === event.currentTarget ||
+        (event.relatedTarget &&
+         event.relatedTarget.parentNode === event.currentTarget))
+      return;
+
+    // Closing menus in a Places popup is handled by the view itself.
+    if (!this._isStaticContainer(event.target))
+      return;
+
+    PlacesControllerDragHelper.currentDropTarget = null;
+    let popup = event.target.lastChild;
+
+    if (this._loadTimer) {
+      this._loadTimer.cancel();
+      this._loadTimer = null;
+    }
+    this._closeTimer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+    this._closingTimerNode = event.currentTarget;
+    this._closeTimer.initWithCallback(function() {
+      this._closeTimer = null;
+      this._closingTimerNode = null;
+      let node = PlacesControllerDragHelper.currentDropTarget;
+      let inHierarchy = false;
+      while (node && !inHierarchy) {
+        inHierarchy = node == event.target;
+        node = node.parentNode;
+      }
+      if (!inHierarchy && popup && popup.hasAttribute("autoopened")) {
+        popup.removeAttribute("autoopened");
+        popup.hidePopup();
+      }
+    }, this._closeDelayMs, Ci.nsITimer.TYPE_ONE_SHOT);
+  },
+
+  /**
+   * Determines if a XUL element represents a static container.
+   * @returns true if the element is a container element (menu or
+   *`         menu-toolbarbutton), false otherwise.
+   */
+  _isStaticContainer: function PMDH__isContainer(node) {
+    let isMenu = node.localName == "menu" ||
+                 (node.localName == "toolbarbutton" &&
+                  (node.getAttribute("type") == "menu" ||
+                   node.getAttribute("type") == "menu-button"));
+    let isStatic = !("_placesNode" in node) && node.lastChild &&
+                   node.lastChild.hasAttribute("placespopup") &&
+                   !node.parentNode.hasAttribute("placespopup");
+    return isMenu && isStatic;
+  },
+
+  /**
+   * Called when the user drags over the <menu> element.
+   * @param   event
+   *          The DragOver event.
+   */
+  onDragOver: function PMDH_onDragOver(event) {
+    let ip = new InsertionPoint(PlacesUtils.bookmarksMenuFolderId,
+                                PlacesUtils.bookmarks.DEFAULT_INDEX,
+                                Components.interfaces.nsITreeView.DROP_ON);
+    if (ip && PlacesControllerDragHelper.canDrop(ip, event.dataTransfer))
+      event.preventDefault();
+
+    event.stopPropagation();
+  },
+
+  /**
+   * Called when the user drops on the <menu> element.
+   * @param   event
+   *          The Drop event.
+   */
+  onDrop: function PMDH_onDrop(event) {
+    // Put the item at the end of bookmark menu.
+    let ip = new InsertionPoint(PlacesUtils.bookmarksMenuFolderId,
+                                PlacesUtils.bookmarks.DEFAULT_INDEX,
+                                Components.interfaces.nsITreeView.DROP_ON);
+    PlacesControllerDragHelper.onDrop(ip, event.dataTransfer);
+    PlacesControllerDragHelper.currentDropTarget = null;
+    event.stopPropagation();
+  }
+};
+
+/**
+ * This object handles the initialization and uninitialization of the bookmarks
+ * toolbar.
+ */
+var PlacesToolbarHelper = {
+  _place: "place:folder=TOOLBAR",
+
+  get _viewElt() {
+    return document.getElementById("PlacesToolbar");
+  },
+
+  get _placeholder() {
+    return document.getElementById("bookmarks-toolbar-placeholder");
+  },
+
+  init: function PTH_init(forceToolbarOverflowCheck) {
+    let viewElt = this._viewElt;
+    if (!viewElt || viewElt._placesView)
+      return;
+
+    // CustomizableUI.addListener is idempotent, so we can safely
+    // call this multiple times.
+    CustomizableUI.addListener(this);
+
+    // If the bookmarks toolbar item is:
+    // - not in a toolbar, or;
+    // - the toolbar is collapsed, or;
+    // - the toolbar is hidden some other way:
+    // don't initialize.  Also, there is no need to initialize the toolbar if
+    // customizing, because that will happen when the customization is done.
+    let toolbar = this._getParentToolbar(viewElt);
+    if (!toolbar || toolbar.collapsed || this._isCustomizing ||
+        getComputedStyle(toolbar, "").display == "none")
+      return;
+
+    new PlacesToolbar(this._place);
+    if (forceToolbarOverflowCheck) {
+      viewElt._placesView.updateOverflowStatus();
+    }
+    this._shouldWrap = false;
+    this._setupPlaceholder();
+  },
+
+  uninit: function PTH_uninit() {
+    CustomizableUI.removeListener(this);
+  },
+
+  customizeStart: function PTH_customizeStart() {
+    try {
+      let viewElt = this._viewElt;
+      if (viewElt && viewElt._placesView)
+        viewElt._placesView.uninit();
+    } finally {
+      this._isCustomizing = true;
+    }
+    this._shouldWrap = this._getShouldWrap();
+  },
+
+  customizeChange: function PTH_customizeChange() {
+    this._setupPlaceholder();
+  },
+
+  _setupPlaceholder: function PTH_setupPlaceholder() {
+    let placeholder = this._placeholder;
+    if (!placeholder) {
+      return;
+    }
+
+    let shouldWrapNow = this._getShouldWrap();
+    if (this._shouldWrap != shouldWrapNow) {
+      if (shouldWrapNow) {
+        placeholder.setAttribute("wrap", "true");
+      } else {
+        placeholder.removeAttribute("wrap");
+      }
+      this._shouldWrap = shouldWrapNow;
+    }
+  },
+
+  customizeDone: function PTH_customizeDone() {
+    this._isCustomizing = false;
+    this.init(true);
+  },
+
+  _getShouldWrap: function PTH_getShouldWrap() {
+    let placement = CustomizableUI.getPlacementOfWidget("personal-bookmarks");
+    let area = placement && placement.area;
+    let areaType = area && CustomizableUI.getAreaType(area);
+    return !area || CustomizableUI.TYPE_MENU_PANEL == areaType;
+  },
+
+  onPlaceholderCommand: function () {
+    let widgetGroup = CustomizableUI.getWidget("personal-bookmarks");
+    let widget = widgetGroup.forWindow(window);
+    if (widget.overflowed ||
+        widgetGroup.areaType == CustomizableUI.TYPE_MENU_PANEL) {
+      PlacesCommandHook.showPlacesOrganizer("BookmarksToolbar");
+    }
+  },
+
+  _getParentToolbar: function(element) {
+    while (element) {
+      if (element.localName == "toolbar") {
+        return element;
+      }
+      element = element.parentNode;
+    }
+    return null;
+  },
+
+  onWidgetUnderflow: function(aNode, aContainer) {
+    // The view gets broken by being removed and reinserted by the overflowable
+    // toolbar, so we have to force an uninit and reinit.
+    let win = aNode.ownerGlobal;
+    if (aNode.id == "personal-bookmarks" && win == window) {
+      this._resetView();
+    }
+  },
+
+  onWidgetAdded: function(aWidgetId, aArea, aPosition) {
+    if (aWidgetId == "personal-bookmarks" && !this._isCustomizing) {
+      // It's possible (with the "Add to Menu", "Add to Toolbar" context
+      // options) that the Places Toolbar Items have been moved without
+      // letting us prepare and handle it with with customizeStart and
+      // customizeDone. If that's the case, we need to reset the views
+      // since they're probably broken from the DOM reparenting.
+      this._resetView();
+    }
+  },
+
+  _resetView: function() {
+    if (this._viewElt) {
+      // It's possible that the placesView might not exist, and we need to
+      // do a full init. This could happen if the Bookmarks Toolbar Items are
+      // moved to the Menu Panel, and then to the toolbar with the "Add to Toolbar"
+      // context menu option, outside of customize mode.
+      if (this._viewElt._placesView) {
+        this._viewElt._placesView.uninit();
+      }
+      this.init(true);
+    }
+  },
+};
+
+/**
+ * Handles the bookmarks menu-button in the toolbar.
+ */
+
+var BookmarkingUI = {
+  BOOKMARK_BUTTON_ID: "bookmarks-menu-button",
+  BOOKMARK_BUTTON_SHORTCUT: "addBookmarkAsKb",
+  get button() {
+    delete this.button;
+    let widgetGroup = CustomizableUI.getWidget(this.BOOKMARK_BUTTON_ID);
+    return this.button = widgetGroup.forWindow(window).node;
+  },
+
+  /* Can't make this a self-deleting getter because it's anonymous content
+   * and might lose/regain bindings at some point. */
+  get star() {
+    return document.getAnonymousElementByAttribute(this.button, "anonid",
+                                                   "button");
+  },
+
+  get anchor() {
+    if (!this._shouldUpdateStarState()) {
+      return null;
+    }
+    let widget = CustomizableUI.getWidget(this.BOOKMARK_BUTTON_ID)
+                               .forWindow(window);
+    if (widget.overflowed)
+      return widget.anchor;
+
+    let star = this.star;
+    return star ? document.getAnonymousElementByAttribute(star, "class",
+                                                          "toolbarbutton-icon")
+                : null;
+  },
+
+  get notifier() {
+    delete this.notifier;
+    return this.notifier = document.getElementById("bookmarked-notification-anchor");
+  },
+
+  get dropmarkerNotifier() {
+    delete this.dropmarkerNotifier;
+    return this.dropmarkerNotifier = document.getElementById("bookmarked-notification-dropmarker-anchor");
+  },
+
+  get broadcaster() {
+    delete this.broadcaster;
+    let broadcaster = document.getElementById("bookmarkThisPageBroadcaster");
+    return this.broadcaster = broadcaster;
+  },
+
+  STATUS_UPDATING: -1,
+  STATUS_UNSTARRED: 0,
+  STATUS_STARRED: 1,
+  get status() {
+    if (!this._shouldUpdateStarState()) {
+      return this.STATUS_UNSTARRED;
+    }
+    if (this._pendingStmt)
+      return this.STATUS_UPDATING;
+    return this.button.hasAttribute("starred") ? this.STATUS_STARRED
+                                               : this.STATUS_UNSTARRED;
+  },
+
+  get _starredTooltip()
+  {
+    delete this._starredTooltip;
+    return this._starredTooltip =
+      this._getFormattedTooltip("starButtonOn.tooltip2");
+  },
+
+  get _unstarredTooltip()
+  {
+    delete this._unstarredTooltip;
+    return this._unstarredTooltip =
+      this._getFormattedTooltip("starButtonOff.tooltip2");
+  },
+
+  _getFormattedTooltip: function(strId) {
+    let args = [];
+    let shortcut = document.getElementById(this.BOOKMARK_BUTTON_SHORTCUT);
+    if (shortcut)
+      args.push(ShortcutUtils.prettifyShortcut(shortcut));
+    return gNavigatorBundle.getFormattedString(strId, args);
+  },
+
+  /**
+   * The type of the area in which the button is currently located.
+   * When in the panel, we don't update the button's icon.
+   */
+  _currentAreaType: null,
+  _shouldUpdateStarState: function() {
+    return this._currentAreaType == CustomizableUI.TYPE_TOOLBAR;
+  },
+
+  /**
+   * The popup contents must be updated when the user customizes the UI, or
+   * changes the personal toolbar collapsed status.  In such a case, any needed
+   * change should be handled in the popupshowing helper, for performance
+   * reasons.
+   */
+  _popupNeedsUpdate: true,
+  onToolbarVisibilityChange: function BUI_onToolbarVisibilityChange() {
+    this._popupNeedsUpdate = true;
+  },
+
+  onPopupShowing: function BUI_onPopupShowing(event) {
+    // Don't handle events for submenus.
+    if (event.target != event.currentTarget)
+      return;
+
+    // Ideally this code would never be reached, but if you click the outer
+    // button's border, some cpp code for the menu button's so-called XBL binding
+    // decides to open the popup even though the dropmarker is invisible.
+    if (this._currentAreaType == CustomizableUI.TYPE_MENU_PANEL) {
+      this._showSubview();
+      event.preventDefault();
+      event.stopPropagation();
+      return;
+    }
+
+    let widget = CustomizableUI.getWidget(this.BOOKMARK_BUTTON_ID)
+                               .forWindow(window);
+    if (widget.overflowed) {
+      // Don't open a popup in the overflow popup, rather just open the Library.
+      event.preventDefault();
+      widget.node.removeAttribute("closemenu");
+      PlacesCommandHook.showPlacesOrganizer("BookmarksMenu");
+      return;
+    }
+
+    this._initRecentBookmarks(document.getElementById("BMB_recentBookmarks"),
+                              "subviewbutton");
+
+    if (!this._popupNeedsUpdate)
+      return;
+    this._popupNeedsUpdate = false;
+
+    let popup = event.target;
+    let getPlacesAnonymousElement =
+      aAnonId => document.getAnonymousElementByAttribute(popup.parentNode,
+                                                         "placesanonid",
+                                                         aAnonId);
+
+    let viewToolbarMenuitem = getPlacesAnonymousElement("view-toolbar");
+    if (viewToolbarMenuitem) {
+      // Update View bookmarks toolbar checkbox menuitem.
+      viewToolbarMenuitem.classList.add("subviewbutton");
+      let personalToolbar = document.getElementById("PersonalToolbar");
+      viewToolbarMenuitem.setAttribute("checked", !personalToolbar.collapsed);
+    }
+  },
+
+  attachPlacesView: function(event, node) {
+    // If the view is already there, bail out early.
+    if (node.parentNode._placesView)
+      return;
+
+    new PlacesMenu(event, "place:folder=BOOKMARKS_MENU", {
+      extraClasses: {
+        entry: "subviewbutton",
+        footer: "panel-subview-footer"
+      },
+      insertionPoint: ".panel-subview-footer"
+    });
+  },
+
+  RECENTLY_BOOKMARKED_PREF: "browser.bookmarks.showRecentlyBookmarked",
+
+  _initRecentBookmarks(aHeaderItem, aExtraCSSClass) {
+    this._populateRecentBookmarks(aHeaderItem, aExtraCSSClass);
+
+    // Add observers and listeners and remove them again when the menupopup closes.
+
+    let bookmarksMenu = aHeaderItem.parentNode;
+    let placesContextMenu = document.getElementById("placesContext");
+
+    let prefObserver = () => {
+      this._populateRecentBookmarks(aHeaderItem, aExtraCSSClass);
+    };
+
+    this._recentlyBookmarkedObserver = {
+      QueryInterface: XPCOMUtils.generateQI([
+        Ci.nsINavBookmarkObserver,
+        Ci.nsISupportsWeakReference
+      ])
+    };
+    this._recentlyBookmarkedObserver.onItemRemoved = () => {
+      // Update the menu when a bookmark has been removed.
+      // The native menubar on Mac doesn't support live update, so this won't
+      // work there.
+      this._populateRecentBookmarks(aHeaderItem, aExtraCSSClass);
+    };
+
+    let updatePlacesContextMenu = (shouldHidePrefUI = false) => {
+      let prefEnabled = !shouldHidePrefUI && Services.prefs.getBoolPref(this.RECENTLY_BOOKMARKED_PREF);
+      let showItem = document.getElementById("placesContext_showRecentlyBookmarked");
+      let hideItem = document.getElementById("placesContext_hideRecentlyBookmarked");
+      let separator = document.getElementById("placesContext_recentlyBookmarkedSeparator");
+      showItem.hidden = shouldHidePrefUI || prefEnabled;
+      hideItem.hidden = shouldHidePrefUI || !prefEnabled;
+      separator.hidden = shouldHidePrefUI;
+      if (!shouldHidePrefUI) {
+        // Move to the bottom of the menu.
+        separator.parentNode.appendChild(separator);
+        showItem.parentNode.appendChild(showItem);
+        hideItem.parentNode.appendChild(hideItem);
+      }
+    };
+
+    let onPlacesContextMenuShowing = event => {
+      if (event.target == event.currentTarget) {
+        let triggerPopup = event.target.triggerNode;
+        while (triggerPopup && triggerPopup.localName != "menupopup") {
+          triggerPopup = triggerPopup.parentNode;
+        }
+        let shouldHidePrefUI = triggerPopup != bookmarksMenu;
+        updatePlacesContextMenu(shouldHidePrefUI);
+      }
+    };
+
+    let onBookmarksMenuHidden = event => {
+      if (event.target == event.currentTarget) {
+        updatePlacesContextMenu(true);
+
+        Services.prefs.removeObserver(this.RECENTLY_BOOKMARKED_PREF, prefObserver, false);
+        PlacesUtils.bookmarks.removeObserver(this._recentlyBookmarkedObserver);
+        this._recentlyBookmarkedObserver = null;
+        if (placesContextMenu) {
+          placesContextMenu.removeEventListener("popupshowing", onPlacesContextMenuShowing);
+        }
+        bookmarksMenu.removeEventListener("popuphidden", onBookmarksMenuHidden);
+      }
+    };
+
+    Services.prefs.addObserver(this.RECENTLY_BOOKMARKED_PREF, prefObserver, false);
+    PlacesUtils.bookmarks.addObserver(this._recentlyBookmarkedObserver, true);
+
+    // The context menu doesn't exist in non-browser windows on Mac
+    if (placesContextMenu) {
+      placesContextMenu.addEventListener("popupshowing", onPlacesContextMenuShowing);
+    }
+
+    bookmarksMenu.addEventListener("popuphidden", onBookmarksMenuHidden);
+  },
+
+  _populateRecentBookmarks(aHeaderItem, aExtraCSSClass = "") {
+    while (aHeaderItem.nextSibling &&
+           aHeaderItem.nextSibling.localName == "menuitem") {
+      aHeaderItem.nextSibling.remove();
+    }
+
+    let shouldShow = Services.prefs.getBoolPref(this.RECENTLY_BOOKMARKED_PREF);
+    let separator = aHeaderItem.previousSibling;
+    aHeaderItem.hidden = !shouldShow;
+    separator.hidden = !shouldShow;
+
+    if (!shouldShow) {
+      return;
+    }
+
+    const kMaxResults = 5;
+
+    let options = PlacesUtils.history.getNewQueryOptions();
+    options.excludeQueries = true;
+    options.queryType = options.QUERY_TYPE_BOOKMARKS;
+    options.sortingMode = options.SORT_BY_DATEADDED_DESCENDING;
+    options.maxResults = kMaxResults;
+    let query = PlacesUtils.history.getNewQuery();
+
+    let fragment = document.createDocumentFragment();
+    let root = PlacesUtils.history.executeQuery(query, options).root;
+    root.containerOpen = true;
+    for (let i = 0; i < root.childCount; i++) {
+      let node = root.getChild(i);
+      let uri = node.uri;
+      let title = node.title;
+      let icon = node.icon;
+
+      let item =
+        document.createElementNS("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul",
+                                 "menuitem");
+      item.setAttribute("label", title || uri);
+      item.setAttribute("targetURI", uri);
+      item.setAttribute("simulated-places-node", true);
+      item.setAttribute("class", "menuitem-iconic menuitem-with-favicon bookmark-item " +
+                                 aExtraCSSClass);
+      if (icon) {
+        item.setAttribute("image", icon);
+      }
+      item._placesNode = node;
+      fragment.appendChild(item);
+    }
+    root.containerOpen = false;
+    aHeaderItem.parentNode.insertBefore(fragment, aHeaderItem.nextSibling);
+  },
+
+  showRecentlyBookmarked() {
+    Services.prefs.setBoolPref(this.RECENTLY_BOOKMARKED_PREF, true);
+  },
+
+  hideRecentlyBookmarked() {
+    Services.prefs.setBoolPref(this.RECENTLY_BOOKMARKED_PREF, false);
+  },
+
+  _updateCustomizationState: function BUI__updateCustomizationState() {
+    let placement = CustomizableUI.getPlacementOfWidget(this.BOOKMARK_BUTTON_ID);
+    this._currentAreaType = placement && CustomizableUI.getAreaType(placement.area);
+  },
+
+  _uninitView: function BUI__uninitView() {
+    // When an element with a placesView attached is removed and re-inserted,
+    // XBL reapplies the binding causing any kind of issues and possible leaks,
+    // so kill current view and let popupshowing generate a new one.
+    if (this.button._placesView)
+      this.button._placesView.uninit();
+
+    // We have to do the same thing for the "special" views underneath the
+    // the bookmarks menu.
+    const kSpecialViewNodeIDs = ["BMB_bookmarksToolbar", "BMB_unsortedBookmarks"];
+    for (let viewNodeID of kSpecialViewNodeIDs) {
+      let elem = document.getElementById(viewNodeID);
+      if (elem && elem._placesView) {
+        elem._placesView.uninit();
+      }
+    }
+  },
+
+  onCustomizeStart: function BUI_customizeStart(aWindow) {
+    if (aWindow == window) {
+      this._uninitView();
+      this._isCustomizing = true;
+    }
+  },
+
+  onWidgetAdded: function BUI_widgetAdded(aWidgetId) {
+    if (aWidgetId == this.BOOKMARK_BUTTON_ID) {
+      this._onWidgetWasMoved();
+    }
+  },
+
+  onWidgetRemoved: function BUI_widgetRemoved(aWidgetId) {
+    if (aWidgetId == this.BOOKMARK_BUTTON_ID) {
+      this._onWidgetWasMoved();
+    }
+  },
+
+  onWidgetReset: function BUI_widgetReset(aNode, aContainer) {
+    if (aNode == this.button) {
+      this._onWidgetWasMoved();
+    }
+  },
+
+  onWidgetUndoMove: function BUI_undoWidgetUndoMove(aNode, aContainer) {
+    if (aNode == this.button) {
+      this._onWidgetWasMoved();
+    }
+  },
+
+  _onWidgetWasMoved: function BUI_widgetWasMoved() {
+    let usedToUpdateStarState = this._shouldUpdateStarState();
+    this._updateCustomizationState();
+    if (!usedToUpdateStarState && this._shouldUpdateStarState()) {
+      this.updateStarState();
+    } else if (usedToUpdateStarState && !this._shouldUpdateStarState()) {
+      this._updateStar();
+    }
+    // If we're moved outside of customize mode, we need to uninit
+    // our view so it gets reconstructed.
+    if (!this._isCustomizing) {
+      this._uninitView();
+    }
+  },
+
+  onCustomizeEnd: function BUI_customizeEnd(aWindow) {
+    if (aWindow == window) {
+      this._isCustomizing = false;
+      this.onToolbarVisibilityChange();
+    }
+  },
+
+  init: function() {
+    CustomizableUI.addListener(this);
+    this._updateCustomizationState();
+  },
+
+  _hasBookmarksObserver: false,
+  _itemIds: [],
+  uninit: function BUI_uninit() {
+    this._updateBookmarkPageMenuItem(true);
+    CustomizableUI.removeListener(this);
+
+    this._uninitView();
+
+    if (this._hasBookmarksObserver) {
+      PlacesUtils.removeLazyBookmarkObserver(this);
+    }
+
+    if (this._pendingStmt) {
+      this._pendingStmt.cancel();
+      delete this._pendingStmt;
+    }
+  },
+
+  onLocationChange: function BUI_onLocationChange() {
+    if (this._uri && gBrowser.currentURI.equals(this._uri)) {
+      return;
+    }
+    this.updateStarState();
+  },
+
+  updateStarState: function BUI_updateStarState() {
+    // Reset tracked values.
+    this._uri = gBrowser.currentURI;
+    this._itemIds = [];
+
+    if (this._pendingStmt) {
+      this._pendingStmt.cancel();
+      delete this._pendingStmt;
+    }
+
+    this._pendingStmt = PlacesUtils.asyncGetBookmarkIds(this._uri, (aItemIds, aURI) => {
+      // Safety check that the bookmarked URI equals the tracked one.
+      if (!aURI.equals(this._uri)) {
+        Components.utils.reportError("BookmarkingUI did not receive current URI");
+        return;
+      }
+
+      // It's possible that onItemAdded gets called before the async statement
+      // calls back.  For such an edge case, retain all unique entries from both
+      // arrays.
+      this._itemIds = this._itemIds.filter(
+        id => !aItemIds.includes(id)
+      ).concat(aItemIds);
+
+      this._updateStar();
+
+      // Start observing bookmarks if needed.
+      if (!this._hasBookmarksObserver) {
+        try {
+          PlacesUtils.addLazyBookmarkObserver(this);
+          this._hasBookmarksObserver = true;
+        } catch (ex) {
+          Components.utils.reportError("BookmarkingUI failed adding a bookmarks observer: " + ex);
+        }
+      }
+
+      delete this._pendingStmt;
+    });
+  },
+
+  _updateStar: function BUI__updateStar() {
+    if (!this._shouldUpdateStarState()) {
+      if (this.broadcaster.hasAttribute("starred")) {
+        this.broadcaster.removeAttribute("starred");
+        this.broadcaster.removeAttribute("buttontooltiptext");
+      }
+      return;
+    }
+
+    if (this._itemIds.length > 0) {
+      this.broadcaster.setAttribute("starred", "true");
+      this.broadcaster.setAttribute("buttontooltiptext", this._starredTooltip);
+      if (this.button.getAttribute("overflowedItem") == "true") {
+        this.button.setAttribute("label", this._starButtonOverflowedStarredLabel);
+      }
+    }
+    else {
+      this.broadcaster.removeAttribute("starred");
+      this.broadcaster.setAttribute("buttontooltiptext", this._unstarredTooltip);
+      if (this.button.getAttribute("overflowedItem") == "true") {
+        this.button.setAttribute("label", this._starButtonOverflowedLabel);
+      }
+    }
+  },
+
+  /**
+   * forceReset is passed when we're destroyed and the label should go back
+   * to the default (Bookmark This Page) for OS X.
+   */
+  _updateBookmarkPageMenuItem: function BUI__updateBookmarkPageMenuItem(forceReset) {
+    let isStarred = !forceReset && this._itemIds.length > 0;
+    let label = isStarred ? "editlabel" : "bookmarklabel";
+    if (this.broadcaster) {
+      this.broadcaster.setAttribute("label", this.broadcaster.getAttribute(label));
+    }
+  },
+
+  onMainMenuPopupShowing: function BUI_onMainMenuPopupShowing(event) {
+    // Don't handle events for submenus.
+    if (event.target != event.currentTarget)
+      return;
+
+    this._updateBookmarkPageMenuItem();
+    PlacesCommandHook.updateBookmarkAllTabsCommand();
+    this._initRecentBookmarks(document.getElementById("menu_recentBookmarks"));
+  },
+
+  _showBookmarkedNotification: function BUI_showBookmarkedNotification() {
+    function getCenteringTransformForRects(rectToPosition, referenceRect) {
+      let topDiff = referenceRect.top - rectToPosition.top;
+      let leftDiff = referenceRect.left - rectToPosition.left;
+      let heightDiff = referenceRect.height - rectToPosition.height;
+      let widthDiff = referenceRect.width - rectToPosition.width;
+      return [(leftDiff + .5 * widthDiff) + "px", (topDiff + .5 * heightDiff) + "px"];
+    }
+
+    if (this._notificationTimeout) {
+      clearTimeout(this._notificationTimeout);
+    }
+
+    if (this.notifier.style.transform == '') {
+      // Get all the relevant nodes and computed style objects
+      let dropmarker = document.getAnonymousElementByAttribute(this.button, "anonid", "dropmarker");
+      let dropmarkerIcon = document.getAnonymousElementByAttribute(dropmarker, "class", "dropmarker-icon");
+      let dropmarkerStyle = getComputedStyle(dropmarkerIcon);
+
+      // Check for RTL and get bounds
+      let isRTL = getComputedStyle(this.button).direction == "rtl";
+      let buttonRect = this.button.getBoundingClientRect();
+      let notifierRect = this.notifier.getBoundingClientRect();
+      let dropmarkerRect = dropmarkerIcon.getBoundingClientRect();
+      let dropmarkerNotifierRect = this.dropmarkerNotifier.getBoundingClientRect();
+
+      // Compute, but do not set, transform for star icon
+      let [translateX, translateY] = getCenteringTransformForRects(notifierRect, buttonRect);
+      let starIconTransform = "translate(" +  translateX + ", " + translateY + ")";
+      if (isRTL) {
+        starIconTransform += " scaleX(-1)";
+      }
+
+      // Compute, but do not set, transform for dropmarker
+      [translateX, translateY] = getCenteringTransformForRects(dropmarkerNotifierRect, dropmarkerRect);
+      let dropmarkerTransform = "translate(" + translateX + ", " + translateY + ")";
+
+      // Do all layout invalidation in one go:
+      this.notifier.style.transform = starIconTransform;
+      this.dropmarkerNotifier.style.transform = dropmarkerTransform;
+
+      let dropmarkerAnimationNode = this.dropmarkerNotifier.firstChild;
+      dropmarkerAnimationNode.style.MozImageRegion = dropmarkerStyle.MozImageRegion;
+      dropmarkerAnimationNode.style.listStyleImage = dropmarkerStyle.listStyleImage;
+    }
+
+    let isInOverflowPanel = this.button.getAttribute("overflowedItem") == "true";
+    if (!isInOverflowPanel) {
+      this.notifier.setAttribute("notification", "finish");
+      this.button.setAttribute("notification", "finish");
+      this.dropmarkerNotifier.setAttribute("notification", "finish");
+    }
+
+    this._notificationTimeout = setTimeout( () => {
+      this.notifier.removeAttribute("notification");
+      this.dropmarkerNotifier.removeAttribute("notification");
+      this.button.removeAttribute("notification");
+
+      this.dropmarkerNotifier.style.transform = '';
+      this.notifier.style.transform = '';
+    }, 1000);
+  },
+
+  _showSubview: function() {
+    let view = document.getElementById("PanelUI-bookmarks");
+    view.addEventListener("ViewShowing", this);
+    view.addEventListener("ViewHiding", this);
+    let anchor = document.getElementById(this.BOOKMARK_BUTTON_ID);
+    anchor.setAttribute("closemenu", "none");
+    PanelUI.showSubView("PanelUI-bookmarks", anchor,
+                        CustomizableUI.AREA_PANEL);
+  },
+
+  onCommand: function BUI_onCommand(aEvent) {
+    if (aEvent.target != aEvent.currentTarget) {
+      return;
+    }
+
+    // Handle special case when the button is in the panel.
+    let isBookmarked = this._itemIds.length > 0;
+
+    if (this._currentAreaType == CustomizableUI.TYPE_MENU_PANEL) {
+      this._showSubview();
+      return;
+    }
+    let widget = CustomizableUI.getWidget(this.BOOKMARK_BUTTON_ID)
+                               .forWindow(window);
+    if (widget.overflowed) {
+      // Close the overflow panel because the Edit Bookmark panel will appear.
+      widget.node.removeAttribute("closemenu");
+    }
+
+    // Ignore clicks on the star if we are updating its state.
+    if (!this._pendingStmt) {
+      if (!isBookmarked)
+        this._showBookmarkedNotification();
+      PlacesCommandHook.bookmarkCurrentPage(true);
+    }
+  },
+
+  onCurrentPageContextPopupShowing() {
+    this._updateBookmarkPageMenuItem();
+  },
+
+  handleEvent: function BUI_handleEvent(aEvent) {
+    switch (aEvent.type) {
+      case "ViewShowing":
+        this.onPanelMenuViewShowing(aEvent);
+        break;
+      case "ViewHiding":
+        this.onPanelMenuViewHiding(aEvent);
+        break;
+    }
+  },
+
+  onPanelMenuViewShowing: function BUI_onViewShowing(aEvent) {
+    this._updateBookmarkPageMenuItem();
+    // Update checked status of the toolbar toggle.
+    let viewToolbar = document.getElementById("panelMenu_viewBookmarksToolbar");
+    let personalToolbar = document.getElementById("PersonalToolbar");
+    if (personalToolbar.collapsed)
+      viewToolbar.removeAttribute("checked");
+    else
+      viewToolbar.setAttribute("checked", "true");
+    // Get all statically placed buttons to supply them with keyboard shortcuts.
+    let staticButtons = viewToolbar.parentNode.getElementsByTagName("toolbarbutton");
+    for (let i = 0, l = staticButtons.length; i < l; ++i)
+      CustomizableUI.addShortcut(staticButtons[i]);
+    // Setup the Places view.
+    this._panelMenuView = new PlacesPanelMenuView("place:folder=BOOKMARKS_MENU",
+                                                  "panelMenu_bookmarksMenu",
+                                                  "panelMenu_bookmarksMenu", {
+                                                    extraClasses: {
+                                                      entry: "subviewbutton",
+                                                      footer: "panel-subview-footer"
+                                                    }
+                                                  });
+    aEvent.target.removeEventListener("ViewShowing", this);
+  },
+
+  onPanelMenuViewHiding: function BUI_onViewHiding(aEvent) {
+    this._panelMenuView.uninit();
+    delete this._panelMenuView;
+    aEvent.target.removeEventListener("ViewHiding", this);
+  },
+
+  onPanelMenuViewCommand: function BUI_onPanelMenuViewCommand(aEvent, aView) {
+    let target = aEvent.originalTarget;
+    if (!target._placesNode)
+      return;
+    if (PlacesUtils.nodeIsContainer(target._placesNode))
+      PlacesCommandHook.showPlacesOrganizer([ "BookmarksMenu", target._placesNode.itemId ]);
+    else
+      PlacesUIUtils.openNodeWithEvent(target._placesNode, aEvent, aView);
+    PanelUI.hide();
+  },
+
+  // nsINavBookmarkObserver
+  onItemAdded: function BUI_onItemAdded(aItemId, aParentId, aIndex, aItemType,
+                                        aURI) {
+    if (aURI && aURI.equals(this._uri)) {
+      // If a new bookmark has been added to the tracked uri, register it.
+      if (!this._itemIds.includes(aItemId)) {
+        this._itemIds.push(aItemId);
+        // Only need to update the UI if it wasn't marked as starred before:
+        if (this._itemIds.length == 1) {
+          this._updateStar();
+        }
+      }
+    }
+  },
+
+  onItemRemoved: function BUI_onItemRemoved(aItemId) {
+    let index = this._itemIds.indexOf(aItemId);
+    // If one of the tracked bookmarks has been removed, unregister it.
+    if (index != -1) {
+      this._itemIds.splice(index, 1);
+      // Only need to update the UI if the page is no longer starred
+      if (this._itemIds.length == 0) {
+        this._updateStar();
+      }
+    }
+  },
+
+  onItemChanged: function BUI_onItemChanged(aItemId, aProperty,
+                                            aIsAnnotationProperty, aNewValue) {
+    if (aProperty == "uri") {
+      let index = this._itemIds.indexOf(aItemId);
+      // If the changed bookmark was tracked, check if it is now pointing to
+      // a different uri and unregister it.
+      if (index != -1 && aNewValue != this._uri.spec) {
+        this._itemIds.splice(index, 1);
+        // Only need to update the UI if the page is no longer starred
+        if (this._itemIds.length == 0) {
+          this._updateStar();
+        }
+      }
+      // If another bookmark is now pointing to the tracked uri, register it.
+      else if (index == -1 && aNewValue == this._uri.spec) {
+        this._itemIds.push(aItemId);
+        // Only need to update the UI if it wasn't marked as starred before:
+        if (this._itemIds.length == 1) {
+          this._updateStar();
+        }
+      }
+    }
+  },
+
+  onBeginUpdateBatch: function () {},
+  onEndUpdateBatch: function () {},
+  onBeforeItemRemoved: function () {},
+  onItemVisited: function () {},
+  onItemMoved: function () {},
+
+  // CustomizableUI events:
+  _starButtonLabel: null,
+  get _starButtonOverflowedLabel() {
+    delete this._starButtonOverflowedLabel;
+    return this._starButtonOverflowedLabel =
+      gNavigatorBundle.getString("starButtonOverflowed.label");
+  },
+  get _starButtonOverflowedStarredLabel() {
+    delete this._starButtonOverflowedStarredLabel;
+    return this._starButtonOverflowedStarredLabel =
+      gNavigatorBundle.getString("starButtonOverflowedStarred.label");
+  },
+  onWidgetOverflow: function(aNode, aContainer) {
+    let win = aNode.ownerGlobal;
+    if (aNode.id != this.BOOKMARK_BUTTON_ID || win != window)
+      return;
+
+    let currentLabel = aNode.getAttribute("label");
+    if (!this._starButtonLabel)
+      this._starButtonLabel = currentLabel;
+
+    if (currentLabel == this._starButtonLabel) {
+      let desiredLabel = this._itemIds.length > 0 ? this._starButtonOverflowedStarredLabel
+                                                 : this._starButtonOverflowedLabel;
+      aNode.setAttribute("label", desiredLabel);
+    }
+  },
+
+  onWidgetUnderflow: function(aNode, aContainer) {
+    let win = aNode.ownerGlobal;
+    if (aNode.id != this.BOOKMARK_BUTTON_ID || win != window)
+      return;
+
+    // The view gets broken by being removed and reinserted. Uninit
+    // here so popupshowing will generate a new one:
+    this._uninitView();
+
+    if (aNode.getAttribute("label") != this._starButtonLabel)
+      aNode.setAttribute("label", this._starButtonLabel);
+  },
+
+  QueryInterface: XPCOMUtils.generateQI([
+    Ci.nsINavBookmarkObserver
+  ])
+};
+
+var AutoShowBookmarksToolbar = {
+  init() {
+    Services.obs.addObserver(this, "autoshow-bookmarks-toolbar", false);
+  },
+
+  uninit() {
+    Services.obs.removeObserver(this, "autoshow-bookmarks-toolbar");
+  },
+
+  observe(subject, topic, data) {
+    let toolbar = document.getElementById("PersonalToolbar");
+    if (!toolbar.collapsed)
+      return;
+
+    let placement = CustomizableUI.getPlacementOfWidget("personal-bookmarks");
+    let area = placement && placement.area;
+    if (area != CustomizableUI.AREA_BOOKMARKS)
+      return;
+
+    setToolbarVisibility(toolbar, true);
+  }
+};