Add Basilisk

1 files changed, 1836 insertions, 0 deletions

diff --git a/application/basilisk/base/content/nsContextMenu.js b/application/basilisk/base/content/nsContextMenu.js
new file mode 100644
index 000000000..900daffcd
--- /dev/null
+++ b/application/basilisk/base/content/nsContextMenu.js
@@ -0,0 +1,1836 @@
+/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ts=2 sw=2 sts=2 et tw=80: */
+# 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://gre/modules/ContextualIdentityService.jsm");
+Components.utils.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
+Components.utils.import("resource://gre/modules/InlineSpellChecker.jsm");
+Components.utils.import("resource://gre/modules/LoginManagerContextMenu.jsm");
+Components.utils.import("resource://gre/modules/BrowserUtils.jsm");
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+
+XPCOMUtils.defineLazyModuleGetter(this, "LoginHelper",
+  "resource://gre/modules/LoginHelper.jsm");
+
+var gContextMenuContentData = null;
+
+function nsContextMenu(aXulMenu, aIsShift) {
+  this.shouldDisplay = true;
+  this.initMenu(aXulMenu, aIsShift);
+}
+
+// Prototype for nsContextMenu "class."
+nsContextMenu.prototype = {
+  initMenu: function CM_initMenu(aXulMenu, aIsShift) {
+    // Get contextual info.
+    this.setTarget(document.popupNode, document.popupRangeParent,
+                   document.popupRangeOffset);
+    if (!this.shouldDisplay)
+      return;
+
+    this.hasPageMenu = false;
+    this.isContentSelected = !this.selectionInfo.docSelectionIsCollapsed;
+    if (!aIsShift) {
+      if (this.isRemote) {
+        this.hasPageMenu =
+          PageMenuParent.addToPopup(gContextMenuContentData.customMenuItems,
+                                    this.browser, aXulMenu);
+      }
+      else {
+        this.hasPageMenu = PageMenuParent.buildAndAddToPopup(this.target, aXulMenu);
+      }
+
+      let subject = {
+        menu: aXulMenu,
+        tab: gBrowser ? gBrowser.getTabForBrowser(this.browser) : undefined,
+        isContentSelected: this.isContentSelected,
+        inFrame: this.inFrame,
+        isTextSelected: this.isTextSelected,
+        onTextInput: this.onTextInput,
+        onLink: this.onLink,
+        onImage: this.onImage,
+        onVideo: this.onVideo,
+        onAudio: this.onAudio,
+        onCanvas: this.onCanvas,
+        onEditableArea: this.onEditableArea,
+        onPassword: this.onPassword,
+        srcUrl: this.mediaURL,
+        frameUrl: gContextMenuContentData ? gContextMenuContentData.docLocation : undefined,
+        pageUrl: this.browser ? this.browser.currentURI.spec : undefined,
+        linkUrl: this.linkURL,
+        selectionText: this.isTextSelected ? this.selectionInfo.text : undefined,
+      };
+      subject.wrappedJSObject = subject;
+      Services.obs.notifyObservers(subject, "on-build-contextmenu", null);
+    }
+
+    this.isFrameImage = document.getElementById("isFrameImage");
+    this.ellipsis = "\u2026";
+    try {
+      this.ellipsis = gPrefService.getComplexValue("intl.ellipsis",
+                                                   Ci.nsIPrefLocalizedString).data;
+    } catch (e) { }
+
+    // Reset after "on-build-contextmenu" notification in case selection was
+    // changed during the notification.
+    this.isContentSelected = !this.selectionInfo.docSelectionIsCollapsed;
+    this.onPlainTextLink = false;
+
+    let bookmarkPage = document.getElementById("context-bookmarkpage");
+    if (bookmarkPage)
+      BookmarkingUI.onCurrentPageContextPopupShowing();
+
+    // Initialize (disable/remove) menu items.
+    this.initItems();
+
+    // Register this opening of the menu with telemetry:
+    this._checkTelemetryForMenu(aXulMenu);
+  },
+
+  hiding: function CM_hiding() {
+    gContextMenuContentData = null;
+    InlineSpellCheckerUI.clearSuggestionsFromMenu();
+    InlineSpellCheckerUI.clearDictionaryListFromMenu();
+    InlineSpellCheckerUI.uninit();
+    LoginManagerContextMenu.clearLoginsFromMenu(document);
+
+    // This handler self-deletes, only run it if it is still there:
+    if (this._onPopupHiding) {
+      this._onPopupHiding();
+    }
+  },
+
+  initItems: function CM_initItems() {
+    this.initPageMenuSeparator();
+    this.initOpenItems();
+    this.initNavigationItems();
+    this.initViewItems();
+    this.initMiscItems();
+    this.initSpellingItems();
+    this.initSaveItems();
+    this.initClipboardItems();
+    this.initMediaPlayerItems();
+    this.initLeaveDOMFullScreenItems();
+    this.initClickToPlayItems();
+    this.initPasswordManagerItems();
+    this.initSyncItems();
+  },
+
+  initPageMenuSeparator: function CM_initPageMenuSeparator() {
+    this.showItem("page-menu-separator", this.hasPageMenu);
+  },
+
+  initOpenItems: function CM_initOpenItems() {
+    var isMailtoInternal = false;
+    if (this.onMailtoLink) {
+      var mailtoHandler = Cc["@mozilla.org/uriloader/external-protocol-service;1"].
+                          getService(Ci.nsIExternalProtocolService).
+                          getProtocolHandlerInfo("mailto");
+      isMailtoInternal = (!mailtoHandler.alwaysAskBeforeHandling &&
+                          mailtoHandler.preferredAction == Ci.nsIHandlerInfo.useHelperApp &&
+                          (mailtoHandler.preferredApplicationHandler instanceof Ci.nsIWebHandlerApp));
+    }
+
+    if (this.isTextSelected && !this.onLink &&
+        this.selectionInfo && this.selectionInfo.linkURL) {
+      this.linkURL = this.selectionInfo.linkURL;
+      try {
+        this.linkURI = makeURI(this.linkURL);
+      } catch (ex) {}
+
+      this.linkTextStr = this.selectionInfo.linkText;
+      this.onPlainTextLink = true;
+    }
+
+    var inContainer = false;
+    if (gContextMenuContentData.userContextId) {
+      inContainer = true;
+      var item = document.getElementById("context-openlinkincontainertab");
+
+      item.setAttribute("data-usercontextid", gContextMenuContentData.userContextId);
+
+      var label =
+        ContextualIdentityService.getUserContextLabel(gContextMenuContentData.userContextId);
+      item.setAttribute("label",
+         gBrowserBundle.formatStringFromName("userContextOpenLink.label",
+                                             [label], 1));
+    }
+
+    var shouldShow = this.onSaveableLink || isMailtoInternal || this.onPlainTextLink;
+    var isWindowPrivate = PrivateBrowsingUtils.isWindowPrivate(window);
+    var showContainers = Services.prefs.getBoolPref("privacy.userContext.enabled");
+    this.showItem("context-openlink", shouldShow && !isWindowPrivate);
+    this.showItem("context-openlinkprivate", shouldShow);
+    this.showItem("context-openlinkintab", shouldShow && !inContainer);
+    this.showItem("context-openlinkincontainertab", shouldShow && inContainer);
+    this.showItem("context-openlinkinusercontext-menu", shouldShow && !isWindowPrivate && showContainers);
+    this.showItem("context-openlinkincurrent", this.onPlainTextLink);
+    this.showItem("context-sep-open", shouldShow);
+  },
+
+  initNavigationItems: function CM_initNavigationItems() {
+    var shouldShow = !(this.isContentSelected || this.onLink || this.onImage ||
+                       this.onCanvas || this.onVideo || this.onAudio ||
+                       this.onTextInput);
+    this.showItem("context-navigation", shouldShow);
+    this.showItem("context-sep-navigation", shouldShow);
+
+    let stopped = XULBrowserWindow.stopCommand.getAttribute("disabled") == "true";
+
+    let stopReloadItem = "";
+    if (shouldShow) {
+      stopReloadItem = (stopped) ? "reload" : "stop";
+    }
+
+    this.showItem("context-reload", stopReloadItem == "reload");
+    this.showItem("context-stop", stopReloadItem == "stop");
+
+    // XXX: Stop is determined in browser.js; the canStop broadcaster is broken
+    //this.setItemAttrFromNode( "context-stop", "disabled", "canStop" );
+  },
+
+  initLeaveDOMFullScreenItems: function CM_initLeaveFullScreenItem() {
+    // only show the option if the user is in DOM fullscreen
+    var shouldShow = (this.target.ownerDocument.fullscreenElement != null);
+    this.showItem("context-leave-dom-fullscreen", shouldShow);
+
+    // Explicitly show if in DOM fullscreen, but do not hide it has already been shown
+    if (shouldShow)
+        this.showItem("context-media-sep-commands", true);
+  },
+
+  initSaveItems: function CM_initSaveItems() {
+    var shouldShow = !(this.onTextInput || this.onLink ||
+                       this.isContentSelected || this.onImage ||
+                       this.onCanvas || this.onVideo || this.onAudio);
+    this.showItem("context-savepage", shouldShow);
+
+    // Save link depends on whether we're in a link, or selected text matches valid URL pattern.
+    this.showItem("context-savelink", this.onSaveableLink || this.onPlainTextLink);
+
+    // Save image depends on having loaded its content, video and audio don't.
+    this.showItem("context-saveimage", this.onLoadedImage || this.onCanvas);
+    this.showItem("context-savevideo", this.onVideo);
+    this.showItem("context-saveaudio", this.onAudio);
+    this.showItem("context-video-saveimage", this.onVideo);
+    this.setItemAttr("context-savevideo", "disabled", !this.mediaURL);
+    this.setItemAttr("context-saveaudio", "disabled", !this.mediaURL);
+    // Send media URL (but not for canvas, since it's a big data: URL)
+    this.showItem("context-sendimage", this.onImage);
+    this.showItem("context-sendvideo", this.onVideo);
+    this.showItem("context-castvideo", this.onVideo);
+    this.showItem("context-sendaudio", this.onAudio);
+    let mediaIsBlob = this.mediaURL.startsWith("blob:");
+    this.setItemAttr("context-sendvideo", "disabled", !this.mediaURL || mediaIsBlob);
+    this.setItemAttr("context-sendaudio", "disabled", !this.mediaURL || mediaIsBlob);
+    let shouldShowCast = Services.prefs.getBoolPref("browser.casting.enabled");
+    // getServicesForVideo alone would be sufficient here (it depends on
+    // SimpleServiceDiscovery.services), but SimpleServiceDiscovery is guaranteed
+    // to be already loaded, since we load it on startup in nsBrowserGlue,
+    // and CastingApps isn't, so check SimpleServiceDiscovery.services first
+    // to avoid needing to load CastingApps.jsm if we don't need to.
+    shouldShowCast = shouldShowCast && this.mediaURL &&
+                     SimpleServiceDiscovery.services.length > 0 &&
+                     CastingApps.getServicesForVideo(this.target).length > 0;
+    this.setItemAttr("context-castvideo", "disabled", !shouldShowCast);
+  },
+
+  initViewItems: function CM_initViewItems() {
+    // View source is always OK, unless in directory listing.
+    this.showItem("context-viewpartialsource-selection",
+                  this.isContentSelected);
+    this.showItem("context-viewpartialsource-mathml",
+                  this.onMathML && !this.isContentSelected);
+
+    var shouldShow = !(this.isContentSelected ||
+                       this.onImage || this.onCanvas ||
+                       this.onVideo || this.onAudio ||
+                       this.onLink || this.onTextInput);
+    var showInspect = gPrefService.getBoolPref("devtools.inspector.enabled");
+    this.showItem("context-viewsource", shouldShow);
+    this.showItem("context-viewinfo", shouldShow);
+    this.showItem("inspect-separator", showInspect);
+    this.showItem("context-inspect", showInspect);
+
+    this.showItem("context-sep-viewsource", shouldShow);
+
+    // Set as Desktop background depends on whether an image was clicked on,
+    // and only works if we have a shell service.
+    var haveSetDesktopBackground = false;
+#ifdef HAVE_SHELL_SERVICE
+    // Only enable Set as Desktop Background if we can get the shell service.
+    var shell = getShellService();
+    if (shell)
+      haveSetDesktopBackground = shell.canSetDesktopBackground;
+#endif
+    this.showItem("context-setDesktopBackground",
+                  haveSetDesktopBackground && this.onLoadedImage);
+
+    if (haveSetDesktopBackground && this.onLoadedImage) {
+      document.getElementById("context-setDesktopBackground")
+              .disabled = gContextMenuContentData.disableSetDesktopBackground;
+    }
+
+    // Reload image depends on an image that's not fully loaded
+    this.showItem("context-reloadimage", (this.onImage && !this.onCompletedImage));
+
+    // View image depends on having an image that's not standalone
+    // (or is in a frame), or a canvas.
+    this.showItem("context-viewimage", (this.onImage &&
+                  (!this.inSyntheticDoc || this.inFrame)) || this.onCanvas);
+
+    // View video depends on not having a standalone video.
+    this.showItem("context-viewvideo", this.onVideo && (!this.inSyntheticDoc || this.inFrame));
+    this.setItemAttr("context-viewvideo",  "disabled", !this.mediaURL);
+
+    // View background image depends on whether there is one, but don't make
+    // background images of a stand-alone media document available.
+    this.showItem("context-viewbgimage", shouldShow &&
+                                         !this._hasMultipleBGImages &&
+                                         !this.inSyntheticDoc);
+    this.showItem("context-sep-viewbgimage", shouldShow &&
+                                             !this._hasMultipleBGImages &&
+                                             !this.inSyntheticDoc);
+    document.getElementById("context-viewbgimage")
+            .disabled = !this.hasBGImage;
+
+    this.showItem("context-viewimageinfo", this.onImage);
+    this.showItem("context-viewimagedesc", this.onImage && this.imageDescURL !== "");
+  },
+
+  initMiscItems: function CM_initMiscItems() {
+    // Use "Bookmark This Link" if on a link.
+    let bookmarkPage = document.getElementById("context-bookmarkpage");
+    this.showItem(bookmarkPage,
+                  !(this.isContentSelected || this.onTextInput || this.onLink ||
+                    this.onImage || this.onVideo || this.onAudio || this.onCanvas));
+    bookmarkPage.setAttribute("tooltiptext", bookmarkPage.getAttribute("buttontooltiptext"));
+
+    this.showItem("context-bookmarklink", (this.onLink && !this.onMailtoLink) ||
+                                           this.onPlainTextLink);
+    this.showItem("context-keywordfield",
+                  this.onTextInput && this.onKeywordField);
+    this.showItem("frame", this.inFrame);
+
+    let showSearchSelect = (this.isTextSelected || this.onLink) && !this.onImage;
+    this.showItem("context-searchselect", showSearchSelect);
+    if (showSearchSelect) {
+      this.formatSearchContextItem();
+    }
+
+    // srcdoc cannot be opened separately due to concerns about web
+    // content with about:srcdoc in location bar masquerading as trusted
+    // chrome/addon content.
+    // No need to also test for this.inFrame as this is checked in the parent
+    // submenu.
+    this.showItem("context-showonlythisframe", !this.inSrcdocFrame);
+    this.showItem("context-openframeintab", !this.inSrcdocFrame);
+    this.showItem("context-openframe", !this.inSrcdocFrame);
+    this.showItem("context-bookmarkframe", !this.inSrcdocFrame);
+    this.showItem("open-frame-sep", !this.inSrcdocFrame);
+
+    this.showItem("frame-sep", this.inFrame && this.isTextSelected);
+
+    // Hide menu entries for images, show otherwise
+    if (this.inFrame) {
+      if (BrowserUtils.mimeTypeIsTextBased(this.target.ownerDocument.contentType))
+        this.isFrameImage.removeAttribute('hidden');
+      else
+        this.isFrameImage.setAttribute('hidden', 'true');
+    }
+
+    // BiDi UI
+    this.showItem("context-sep-bidi", !this.onNumeric && top.gBidiUI);
+    this.showItem("context-bidi-text-direction-toggle",
+                  this.onTextInput && !this.onNumeric && top.gBidiUI);
+    this.showItem("context-bidi-page-direction-toggle",
+                  !this.onTextInput && top.gBidiUI);
+  },
+
+  initSpellingItems: function() {
+    var canSpell = InlineSpellCheckerUI.canSpellCheck &&
+                   !InlineSpellCheckerUI.initialSpellCheckPending &&
+                   this.canSpellCheck;
+    let showDictionaries = canSpell && InlineSpellCheckerUI.enabled;
+    var onMisspelling = InlineSpellCheckerUI.overMisspelling;
+    var showUndo = canSpell && InlineSpellCheckerUI.canUndo();
+    this.showItem("spell-check-enabled", canSpell);
+    this.showItem("spell-separator", canSpell);
+    document.getElementById("spell-check-enabled")
+            .setAttribute("checked", canSpell && InlineSpellCheckerUI.enabled);
+
+    this.showItem("spell-add-to-dictionary", onMisspelling);
+    this.showItem("spell-undo-add-to-dictionary", showUndo);
+
+    // suggestion list
+    this.showItem("spell-suggestions-separator", onMisspelling || showUndo);
+    if (onMisspelling) {
+      var suggestionsSeparator =
+        document.getElementById("spell-add-to-dictionary");
+      var numsug =
+        InlineSpellCheckerUI.addSuggestionsToMenu(suggestionsSeparator.parentNode,
+                                                  suggestionsSeparator, 5);
+      this.showItem("spell-no-suggestions", numsug == 0);
+    }
+    else
+      this.showItem("spell-no-suggestions", false);
+
+    // dictionary list
+    this.showItem("spell-dictionaries", showDictionaries);
+    if (canSpell) {
+      var dictMenu = document.getElementById("spell-dictionaries-menu");
+      var dictSep = document.getElementById("spell-language-separator");
+      let count = InlineSpellCheckerUI.addDictionaryListToMenu(dictMenu, dictSep);
+      this.showItem(dictSep, count > 0);
+      this.showItem("spell-add-dictionaries-main", false);
+    }
+    else if (this.onEditableArea) {
+      // when there is no spellchecker but we might be able to spellcheck
+      // add the add to dictionaries item. This will ensure that people
+      // with no dictionaries will be able to download them
+      this.showItem("spell-language-separator", showDictionaries);
+      this.showItem("spell-add-dictionaries-main", showDictionaries);
+    }
+    else
+      this.showItem("spell-add-dictionaries-main", false);
+  },
+
+  initClipboardItems: function() {
+    // Copy depends on whether there is selected text.
+    // Enabling this context menu item is now done through the global
+    // command updating system
+    // this.setItemAttr( "context-copy", "disabled", !this.isTextSelected() );
+    goUpdateGlobalEditMenuItems();
+
+    this.showItem("context-undo", this.onTextInput);
+    this.showItem("context-sep-undo", this.onTextInput);
+    this.showItem("context-cut", this.onTextInput);
+    this.showItem("context-copy",
+                  this.isContentSelected || this.onTextInput);
+    this.showItem("context-paste", this.onTextInput);
+    this.showItem("context-delete", this.onTextInput);
+    this.showItem("context-sep-paste", this.onTextInput);
+    this.showItem("context-selectall", !(this.onLink || this.onImage ||
+                                         this.onVideo || this.onAudio ||
+                                         this.inSyntheticDoc) ||
+                                       this.isDesignMode);
+    this.showItem("context-sep-selectall", this.isContentSelected );
+
+    // XXX dr
+    // ------
+    // nsDocumentViewer.cpp has code to determine whether we're
+    // on a link or an image. we really ought to be using that...
+
+    // Copy email link depends on whether we're on an email link.
+    this.showItem("context-copyemail", this.onMailtoLink);
+
+    // Copy link location depends on whether we're on a non-mailto link.
+    this.showItem("context-copylink", this.onLink && !this.onMailtoLink);
+    this.showItem("context-sep-copylink", this.onLink &&
+                  (this.onImage || this.onVideo || this.onAudio));
+
+#ifdef CONTEXT_COPY_IMAGE_CONTENTS
+    // Copy image contents depends on whether we're on an image.
+    this.showItem("context-copyimage-contents", this.onImage);
+#endif
+    // Copy image location depends on whether we're on an image.
+    this.showItem("context-copyimage", this.onImage);
+    this.showItem("context-copyvideourl", this.onVideo);
+    this.showItem("context-copyaudiourl", this.onAudio);
+    this.setItemAttr("context-copyvideourl",  "disabled", !this.mediaURL);
+    this.setItemAttr("context-copyaudiourl",  "disabled", !this.mediaURL);
+    this.showItem("context-sep-copyimage", this.onImage ||
+                  this.onVideo || this.onAudio);
+  },
+
+  initMediaPlayerItems: function() {
+    var onMedia = (this.onVideo || this.onAudio);
+    // Several mutually exclusive items... play/pause, mute/unmute, show/hide
+    this.showItem("context-media-play",  onMedia && (this.target.paused || this.target.ended));
+    this.showItem("context-media-pause", onMedia && !this.target.paused && !this.target.ended);
+    this.showItem("context-media-mute",   onMedia && !this.target.muted);
+    this.showItem("context-media-unmute", onMedia && this.target.muted);
+    this.showItem("context-media-playbackrate", onMedia && this.target.duration != Number.POSITIVE_INFINITY);
+    this.showItem("context-media-loop", onMedia);
+    this.showItem("context-media-showcontrols", onMedia && !this.target.controls);
+    this.showItem("context-media-hidecontrols", this.target.controls && (this.onVideo || (this.onAudio && !this.inSyntheticDoc)));
+    this.showItem("context-video-fullscreen", this.onVideo && this.target.ownerDocument.fullscreenElement == null);
+    this.showItem("context-media-eme-learnmore", this.onDRMMedia);
+    this.showItem("context-media-eme-separator", this.onDRMMedia);
+
+    // Disable them when there isn't a valid media source loaded.
+    if (onMedia) {
+      this.setItemAttr("context-media-playbackrate-050x", "checked", this.target.playbackRate == 0.5);
+      this.setItemAttr("context-media-playbackrate-100x", "checked", this.target.playbackRate == 1.0);
+      this.setItemAttr("context-media-playbackrate-125x", "checked", this.target.playbackRate == 1.25);
+      this.setItemAttr("context-media-playbackrate-150x", "checked", this.target.playbackRate == 1.5);
+      this.setItemAttr("context-media-playbackrate-200x", "checked", this.target.playbackRate == 2.0);
+      this.setItemAttr("context-media-loop", "checked", this.target.loop);
+      var hasError = this.target.error != null ||
+                     this.target.networkState == this.target.NETWORK_NO_SOURCE;
+      this.setItemAttr("context-media-play",  "disabled", hasError);
+      this.setItemAttr("context-media-pause", "disabled", hasError);
+      this.setItemAttr("context-media-mute",   "disabled", hasError);
+      this.setItemAttr("context-media-unmute", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate-050x", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate-100x", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate-125x", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate-150x", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate-200x", "disabled", hasError);
+      this.setItemAttr("context-media-showcontrols", "disabled", hasError);
+      this.setItemAttr("context-media-hidecontrols", "disabled", hasError);
+      if (this.onVideo) {
+        let canSaveSnapshot = !this.onDRMMedia && this.target.readyState >= this.target.HAVE_CURRENT_DATA;
+        this.setItemAttr("context-video-saveimage",  "disabled", !canSaveSnapshot);
+        this.setItemAttr("context-video-fullscreen", "disabled", hasError);
+      }
+    }
+    this.showItem("context-media-sep-commands",  onMedia);
+  },
+
+  initClickToPlayItems: function() {
+    this.showItem("context-ctp-play", this.onCTPPlugin);
+    this.showItem("context-ctp-hide", this.onCTPPlugin);
+    this.showItem("context-sep-ctp", this.onCTPPlugin);
+  },
+
+  initPasswordManagerItems: function() {
+    let loginFillInfo = gContextMenuContentData && gContextMenuContentData.loginFillInfo;
+
+    // If we could not find a password field we
+    // don't want to show the form fill option.
+    let showFill = loginFillInfo && loginFillInfo.passwordField.found;
+
+    // Disable the fill option if the user has set a master password
+    // or if the password field or target field are disabled.
+    let disableFill = !loginFillInfo ||
+                      !Services.logins ||
+                      !Services.logins.isLoggedIn ||
+                      loginFillInfo.passwordField.disabled ||
+                      (!this.onPassword && loginFillInfo.usernameField.disabled);
+
+    this.showItem("fill-login-separator", showFill);
+    this.showItem("fill-login", showFill);
+    this.setItemAttr("fill-login", "disabled", disableFill);
+
+    // Set the correct label for the fill menu
+    let fillMenu = document.getElementById("fill-login");
+    if (this.onPassword) {
+      fillMenu.setAttribute("label", fillMenu.getAttribute("label-password"));
+      fillMenu.setAttribute("accesskey", fillMenu.getAttribute("accesskey-password"));
+    } else {
+      fillMenu.setAttribute("label", fillMenu.getAttribute("label-login"));
+      fillMenu.setAttribute("accesskey", fillMenu.getAttribute("accesskey-login"));
+    }
+
+    if (!showFill || disableFill) {
+      return;
+    }
+    let documentURI = gContextMenuContentData.documentURIObject;
+    let fragment = LoginManagerContextMenu.addLoginsToMenu(this.target, this.browser, documentURI);
+
+    this.showItem("fill-login-no-logins", !fragment);
+
+    if (!fragment) {
+      return;
+    }
+    let popup = document.getElementById("fill-login-popup");
+    let insertBeforeElement = document.getElementById("fill-login-no-logins");
+    popup.insertBefore(fragment, insertBeforeElement);
+  },
+
+  initSyncItems: function() {
+    gFxAccounts.initPageContextMenu(this);
+  },
+
+  openPasswordManager: function() {
+    LoginHelper.openPasswordManager(window, gContextMenuContentData.documentURIObject.host);
+  },
+
+  inspectNode: function() {
+    let gBrowser = this.browser.ownerGlobal.gBrowser;
+    let { require } = Cu.import("resource://devtools/shared/Loader.jsm", {});
+    let { gDevToolsBrowser } = require("devtools/client/framework/devtools-browser");
+    return gDevToolsBrowser.inspectNode(gBrowser.selectedTab, this.target);
+  },
+
+  // Set various context menu attributes based on the state of the world.
+  setTarget: function (aNode, aRangeParent, aRangeOffset) {
+    // gContextMenuContentData.isRemote tells us if the event came from a remote
+    // process. gContextMenuContentData can be null if something (like tests)
+    // opens the context menu directly.
+    let editFlags;
+    this.isRemote = gContextMenuContentData && gContextMenuContentData.isRemote;
+    if (this.isRemote) {
+      aNode = gContextMenuContentData.event.target;
+      aRangeParent = gContextMenuContentData.event.rangeParent;
+      aRangeOffset = gContextMenuContentData.event.rangeOffset;
+      editFlags = gContextMenuContentData.editFlags;
+    }
+
+    const xulNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+    if (aNode.nodeType == Node.DOCUMENT_NODE ||
+        // Not display on XUL element but relax for <label class="text-link">
+        (aNode.namespaceURI == xulNS && !isXULTextLinkLabel(aNode))) {
+      this.shouldDisplay = false;
+      return;
+    }
+
+    // Initialize contextual info.
+    this.onImage           = false;
+    this.onLoadedImage     = false;
+    this.onCompletedImage  = false;
+    this.imageDescURL      = "";
+    this.onCanvas          = false;
+    this.onVideo           = false;
+    this.onAudio           = false;
+    this.onDRMMedia        = false;
+    this.onTextInput       = false;
+    this.onNumeric         = false;
+    this.onKeywordField    = false;
+    this.mediaURL          = "";
+    this.onLink            = false;
+    this.onMailtoLink      = false;
+    this.onSaveableLink    = false;
+    this.link              = null;
+    this.linkURL           = "";
+    this.linkURI           = null;
+    this.linkTextStr       = "";
+    this.linkProtocol      = "";
+    this.linkDownload      = "";
+    this.linkHasNoReferrer = false;
+    this.onMathML          = false;
+    this.inFrame           = false;
+    this.inSrcdocFrame     = false;
+    this.inSyntheticDoc    = false;
+    this.hasBGImage        = false;
+    this.bgImageURL        = "";
+    this.onEditableArea    = false;
+    this.isDesignMode      = false;
+    this.onCTPPlugin       = false;
+    this.canSpellCheck     = false;
+    this.onPassword        = false;
+
+    if (this.isRemote) {
+      this.selectionInfo = gContextMenuContentData.selectionInfo;
+    } else {
+      this.selectionInfo = BrowserUtils.getSelectionDetails(window);
+    }
+
+    this.textSelected      = this.selectionInfo.text;
+    this.isTextSelected    = this.textSelected.length != 0;
+
+    // Remember the node that was clicked.
+    this.target = aNode;
+
+    let ownerDoc = this.target.ownerDocument;
+    this.ownerDoc = ownerDoc;
+
+    // If this is a remote context menu event, use the information from
+    // gContextMenuContentData instead.
+    if (this.isRemote) {
+      this.browser = gContextMenuContentData.browser;
+      this.principal = gContextMenuContentData.principal;
+      this.frameOuterWindowID = gContextMenuContentData.frameOuterWindowID;
+    } else {
+      editFlags = SpellCheckHelper.isEditable(this.target, window);
+      this.browser = ownerDoc.defaultView
+                             .QueryInterface(Ci.nsIInterfaceRequestor)
+                             .getInterface(Ci.nsIWebNavigation)
+                             .QueryInterface(Ci.nsIDocShell)
+                             .chromeEventHandler;
+      this.principal = ownerDoc.nodePrincipal;
+      this.frameOuterWindowID = ownerDoc.defaultView
+                                        .QueryInterface(Ci.nsIInterfaceRequestor)
+                                        .getInterface(Ci.nsIDOMWindowUtils)
+                                        .outerWindowID;
+    }
+
+    // Check if we are in a synthetic document (stand alone image, video, etc.).
+    this.inSyntheticDoc = ownerDoc.mozSyntheticDocument;
+    // First, do checks for nodes that never have children.
+    if (this.target.nodeType == Node.ELEMENT_NODE) {
+      // See if the user clicked on an image. This check mirrors
+      // nsDocumentViewer::GetInImage. Make sure to update both if this is
+      // changed.
+      if (this.target instanceof Ci.nsIImageLoadingContent &&
+          this.target.currentURI) {
+        this.onImage = true;
+
+        var request =
+          this.target.getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST);
+        if (request && (request.imageStatus & request.STATUS_SIZE_AVAILABLE))
+          this.onLoadedImage = true;
+        if (request &&
+            (request.imageStatus & request.STATUS_LOAD_COMPLETE) &&
+            !(request.imageStatus & request.STATUS_ERROR)) {
+          this.onCompletedImage = true;
+        }
+
+        this.mediaURL = this.target.currentURI.spec;
+
+        var descURL = this.target.getAttribute("longdesc");
+        if (descURL) {
+          this.imageDescURL = makeURLAbsolute(ownerDoc.body.baseURI, descURL);
+        }
+      }
+      else if (this.target instanceof HTMLCanvasElement) {
+        this.onCanvas = true;
+      }
+      else if (this.target instanceof HTMLVideoElement) {
+        let mediaURL = this.target.currentSrc || this.target.src;
+        if (this.isMediaURLReusable(mediaURL)) {
+          this.mediaURL = mediaURL;
+        }
+        if (this._isProprietaryDRM()) {
+          this.onDRMMedia = true;
+        }
+        // Firefox always creates a HTMLVideoElement when loading an ogg file
+        // directly. If the media is actually audio, be smarter and provide a
+        // context menu with audio operations.
+        if (this.target.readyState >= this.target.HAVE_METADATA &&
+            (this.target.videoWidth == 0 || this.target.videoHeight == 0)) {
+          this.onAudio = true;
+        } else {
+          this.onVideo = true;
+        }
+      }
+      else if (this.target instanceof HTMLAudioElement) {
+        this.onAudio = true;
+        let mediaURL = this.target.currentSrc || this.target.src;
+        if (this.isMediaURLReusable(mediaURL)) {
+          this.mediaURL = mediaURL;
+        }
+        if (this._isProprietaryDRM()) {
+          this.onDRMMedia = true;
+        }
+      }
+      else if (editFlags & (SpellCheckHelper.INPUT | SpellCheckHelper.TEXTAREA)) {
+        this.onTextInput = (editFlags & SpellCheckHelper.TEXTINPUT) !== 0;
+        this.onNumeric = (editFlags & SpellCheckHelper.NUMERIC) !== 0;
+        this.onEditableArea = (editFlags & SpellCheckHelper.EDITABLE) !== 0;
+        this.onPassword = (editFlags & SpellCheckHelper.PASSWORD) !== 0;
+        if (this.onEditableArea) {
+          if (this.isRemote) {
+            InlineSpellCheckerUI.initFromRemote(gContextMenuContentData.spellInfo);
+          }
+          else {
+            InlineSpellCheckerUI.init(this.target.QueryInterface(Ci.nsIDOMNSEditableElement).editor);
+            InlineSpellCheckerUI.initFromEvent(aRangeParent, aRangeOffset);
+          }
+        }
+        this.onKeywordField = (editFlags & SpellCheckHelper.KEYWORD);
+      }
+      else if (this.target instanceof HTMLHtmlElement) {
+        var bodyElt = ownerDoc.body;
+        if (bodyElt) {
+          let computedURL;
+          try {
+            computedURL = this.getComputedURL(bodyElt, "background-image");
+            this._hasMultipleBGImages = false;
+          } catch (e) {
+            this._hasMultipleBGImages = true;
+          }
+          if (computedURL) {
+            this.hasBGImage = true;
+            this.bgImageURL = makeURLAbsolute(bodyElt.baseURI,
+                                              computedURL);
+          }
+        }
+      }
+      else if ((this.target instanceof HTMLEmbedElement ||
+                this.target instanceof HTMLObjectElement ||
+                this.target instanceof HTMLAppletElement) &&
+               this.target.displayedType == HTMLObjectElement.TYPE_NULL &&
+               this.target.pluginFallbackType == HTMLObjectElement.PLUGIN_CLICK_TO_PLAY) {
+        this.onCTPPlugin = true;
+      }
+
+      this.canSpellCheck = this._isSpellCheckEnabled(this.target);
+    }
+    else if (this.target.nodeType == Node.TEXT_NODE) {
+      // For text nodes, look at the parent node to determine the spellcheck attribute.
+      this.canSpellCheck = this.target.parentNode &&
+                           this._isSpellCheckEnabled(this.target);
+    }
+
+    // Second, bubble out, looking for items of interest that can have childen.
+    // Always pick the innermost link, background image, etc.
+    const XMLNS = "http://www.w3.org/XML/1998/namespace";
+    var elem = this.target;
+    while (elem) {
+      if (elem.nodeType == Node.ELEMENT_NODE) {
+        // Link?
+        if (!this.onLink &&
+            // Be consistent with what hrefAndLinkNodeForClickEvent
+            // does in browser.js
+             (isXULTextLinkLabel(elem) ||
+              (elem instanceof HTMLAnchorElement && elem.href) ||
+              (elem instanceof HTMLAreaElement && elem.href) ||
+              elem instanceof HTMLLinkElement ||
+              elem.getAttributeNS("http://www.w3.org/1999/xlink", "type") == "simple")) {
+
+          // Target is a link or a descendant of a link.
+          this.onLink = true;
+
+          // Remember corresponding element.
+          this.link = elem;
+          this.linkURL = this.getLinkURL();
+          this.linkURI = this.getLinkURI();
+          this.linkTextStr = this.getLinkText();
+          this.linkProtocol = this.getLinkProtocol();
+          this.onMailtoLink = (this.linkProtocol == "mailto");
+          this.onSaveableLink = this.isLinkSaveable( this.link );
+          this.linkHasNoReferrer = BrowserUtils.linkHasNoReferrer(elem);
+          try {
+            if (elem.download) {
+              // Ignore download attribute on cross-origin links
+              this.principal.checkMayLoad(this.linkURI, false, true);
+              this.linkDownload = elem.download;
+            }
+          }
+          catch (ex) {}
+        }
+
+        // Background image?  Don't bother if we've already found a
+        // background image further down the hierarchy.  Otherwise,
+        // we look for the computed background-image style.
+        if (!this.hasBGImage &&
+            !this._hasMultipleBGImages) {
+          let bgImgUrl;
+          try {
+            bgImgUrl = this.getComputedURL(elem, "background-image");
+            this._hasMultipleBGImages = false;
+          } catch (e) {
+            this._hasMultipleBGImages = true;
+          }
+          if (bgImgUrl) {
+            this.hasBGImage = true;
+            this.bgImageURL = makeURLAbsolute(elem.baseURI,
+                                              bgImgUrl);
+          }
+        }
+      }
+
+      elem = elem.parentNode;
+    }
+
+    // See if the user clicked on MathML
+    const NS_MathML = "http://www.w3.org/1998/Math/MathML";
+    if ((this.target.nodeType == Node.TEXT_NODE &&
+         this.target.parentNode.namespaceURI == NS_MathML)
+         || (this.target.namespaceURI == NS_MathML))
+      this.onMathML = true;
+
+    // See if the user clicked in a frame.
+    var docDefaultView = ownerDoc.defaultView;
+    if (docDefaultView != docDefaultView.top) {
+      this.inFrame = true;
+
+      if (ownerDoc.isSrcdocDocument) {
+          this.inSrcdocFrame = true;
+      }
+    }
+
+    // if the document is editable, show context menu like in text inputs
+    if (!this.onEditableArea) {
+      if (editFlags & SpellCheckHelper.CONTENTEDITABLE) {
+        // If this.onEditableArea is false but editFlags is CONTENTEDITABLE, then
+        // the document itself must be editable.
+        this.onTextInput       = true;
+        this.onKeywordField    = false;
+        this.onImage           = false;
+        this.onLoadedImage     = false;
+        this.onCompletedImage  = false;
+        this.onMathML          = false;
+        this.inFrame           = false;
+        this.inSrcdocFrame     = false;
+        this.hasBGImage        = false;
+        this.isDesignMode      = true;
+        this.onEditableArea = true;
+        if (this.isRemote) {
+          InlineSpellCheckerUI.initFromRemote(gContextMenuContentData.spellInfo);
+        }
+        else {
+          var targetWin = ownerDoc.defaultView;
+          var editingSession = targetWin.QueryInterface(Ci.nsIInterfaceRequestor)
+                                        .getInterface(Ci.nsIWebNavigation)
+                                        .QueryInterface(Ci.nsIInterfaceRequestor)
+                                        .getInterface(Ci.nsIEditingSession);
+          InlineSpellCheckerUI.init(editingSession.getEditorForWindow(targetWin));
+          InlineSpellCheckerUI.initFromEvent(aRangeParent, aRangeOffset);
+        }
+        var canSpell = InlineSpellCheckerUI.canSpellCheck && this.canSpellCheck;
+        this.showItem("spell-check-enabled", canSpell);
+        this.showItem("spell-separator", canSpell);
+      }
+    }
+
+    function isXULTextLinkLabel(node) {
+      return node.namespaceURI == xulNS &&
+             node.tagName == "label" &&
+             node.classList.contains('text-link') &&
+             node.href;
+    }
+  },
+
+  // Returns the computed style attribute for the given element.
+  getComputedStyle: function(aElem, aProp) {
+    return aElem.ownerDocument
+                .defaultView
+                .getComputedStyle(aElem, "").getPropertyValue(aProp);
+  },
+
+  // Returns a "url"-type computed style attribute value, with the url() stripped.
+  getComputedURL: function(aElem, aProp) {
+    var url = aElem.ownerDocument
+                   .defaultView.getComputedStyle(aElem, "")
+                   .getPropertyCSSValue(aProp);
+    if (url instanceof CSSValueList) {
+      if (url.length != 1)
+        throw "found multiple URLs";
+      url = url[0];
+    }
+    return url.primitiveType == CSSPrimitiveValue.CSS_URI ?
+           url.getStringValue() : null;
+  },
+
+  // Returns true if clicked-on link targets a resource that can be saved.
+  isLinkSaveable: function(aLink) {
+    // We don't do the Right Thing for news/snews yet, so turn them off
+    // until we do.
+    return this.linkProtocol && !(
+             this.linkProtocol == "mailto"     ||
+             this.linkProtocol == "javascript" ||
+             this.linkProtocol == "news"       ||
+             this.linkProtocol == "snews"      );
+  },
+
+  _isSpellCheckEnabled: function(aNode) {
+    // We can always force-enable spellchecking on textboxes
+    if (this.isTargetATextBox(aNode)) {
+      return true;
+    }
+    // We can never spell check something which is not content editable
+    var editable = aNode.isContentEditable;
+    if (!editable && aNode.ownerDocument) {
+      editable = aNode.ownerDocument.designMode == "on";
+    }
+    if (!editable) {
+      return false;
+    }
+    // Otherwise make sure that nothing in the parent chain disables spellchecking
+    return aNode.spellcheck;
+  },
+
+  _isProprietaryDRM: function() {
+    return this.target.isEncrypted && this.target.mediaKeys &&
+           this.target.mediaKeys.keySystem != "org.w3.clearkey";
+  },
+
+  _openLinkInParameters : function (extra) {
+    let params = { charset: gContextMenuContentData.charSet,
+                   originPrincipal: this.principal,
+                   referrerURI: gContextMenuContentData.documentURIObject,
+                   referrerPolicy: gContextMenuContentData.referrerPolicy,
+                   noReferrer: this.linkHasNoReferrer };
+    for (let p in extra) {
+      params[p] = extra[p];
+    }
+
+    // If we want to change userContextId, we must be sure that we don't
+    // propagate the referrer.
+    if ("userContextId" in params &&
+        params.userContextId != gContextMenuContentData.userContextId) {
+      params.noReferrer = true;
+    }
+
+    return params;
+  },
+
+  // Open linked-to URL in a new window.
+  openLink : function () {
+    urlSecurityCheck(this.linkURL, this.principal);
+    openLinkIn(this.linkURL, "window", this._openLinkInParameters());
+  },
+
+  // Open linked-to URL in a new private window.
+  openLinkInPrivateWindow : function () {
+    urlSecurityCheck(this.linkURL, this.principal);
+    openLinkIn(this.linkURL, "window",
+               this._openLinkInParameters({ private: true }));
+  },
+
+  // Open linked-to URL in a new tab.
+  openLinkInTab: function(event) {
+    urlSecurityCheck(this.linkURL, this.principal);
+    let referrerURI = gContextMenuContentData.documentURIObject;
+
+    // if its parent allows mixed content and the referring URI passes
+    // a same origin check with the target URI, we can preserve the users
+    // decision of disabling MCB on a page for it's child tabs.
+    let persistAllowMixedContentInChildTab = false;
+
+    if (gContextMenuContentData.parentAllowsMixedContent) {
+      const sm = Services.scriptSecurityManager;
+      try {
+        let targetURI = this.linkURI;
+        sm.checkSameOriginURI(referrerURI, targetURI, false);
+        persistAllowMixedContentInChildTab = true;
+      }
+      catch (e) { }
+    }
+
+    let params = {
+      allowMixedContent: persistAllowMixedContentInChildTab,
+      userContextId: parseInt(event.target.getAttribute('data-usercontextid')),
+    };
+
+    openLinkIn(this.linkURL, "tab", this._openLinkInParameters(params));
+  },
+
+  // open URL in current tab
+  openLinkInCurrent: function() {
+    urlSecurityCheck(this.linkURL, this.principal);
+    openLinkIn(this.linkURL, "current", this._openLinkInParameters());
+  },
+
+  // Open frame in a new tab.
+  openFrameInTab: function() {
+    let referrer = gContextMenuContentData.referrer;
+    openLinkIn(gContextMenuContentData.docLocation, "tab",
+               { charset: gContextMenuContentData.charSet,
+                 referrerURI: referrer ? makeURI(referrer) : null });
+  },
+
+  // Reload clicked-in frame.
+  reloadFrame: function() {
+    this.browser.messageManager.sendAsyncMessage("ContextMenu:ReloadFrame",
+                                                 null, { target: this.target });
+  },
+
+  // Open clicked-in frame in its own window.
+  openFrame: function() {
+    let referrer = gContextMenuContentData.referrer;
+    openLinkIn(gContextMenuContentData.docLocation, "window",
+               { charset: gContextMenuContentData.charSet,
+                 referrerURI: referrer ? makeURI(referrer) : null });
+  },
+
+  // Open clicked-in frame in the same window.
+  showOnlyThisFrame: function() {
+    urlSecurityCheck(gContextMenuContentData.docLocation,
+                     this.browser.contentPrincipal,
+                     Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+    let referrer = gContextMenuContentData.referrer;
+    openUILinkIn(gContextMenuContentData.docLocation, "current",
+                 { disallowInheritPrincipal: true,
+                   referrerURI: referrer ? makeURI(referrer) : null });
+  },
+
+  reload: function(event) {
+    BrowserReloadOrDuplicate(event);
+  },
+
+  // View Partial Source
+  viewPartialSource: function(aContext) {
+    let inWindow = !Services.prefs.getBoolPref("view_source.tab");
+    let openSelectionFn = inWindow ? null : function() {
+      let tabBrowser = gBrowser;
+      // In the case of popups, we need to find a non-popup browser window.
+      if (!tabBrowser || !window.toolbar.visible) {
+        // This returns only non-popup browser windows by default.
+        let browserWindow = RecentWindow.getMostRecentBrowserWindow();
+        tabBrowser = browserWindow.gBrowser;
+      }
+      let tab = tabBrowser.loadOneTab("about:blank", {
+        relatedToCurrent: true,
+        inBackground: false
+      });
+      return tabBrowser.getBrowserForTab(tab);
+    }
+
+    let target = aContext == "mathml" ? this.target : null;
+    top.gViewSourceUtils.viewPartialSourceInBrowser(gBrowser.selectedBrowser, target, openSelectionFn);
+  },
+
+  // Open new "view source" window with the frame's URL.
+  viewFrameSource: function() {
+    BrowserViewSourceOfDocument({
+      browser: this.browser,
+      URL: gContextMenuContentData.docLocation,
+      outerWindowID: this.frameOuterWindowID,
+    });
+  },
+
+  viewInfo: function() {
+    BrowserPageInfo(gContextMenuContentData.docLocation, null, null, null, this.browser);
+  },
+
+  viewImageInfo: function() {
+    BrowserPageInfo(gContextMenuContentData.docLocation, "mediaTab",
+                    this.target, null, this.browser);
+  },
+
+  viewImageDesc: function(e) {
+    urlSecurityCheck(this.imageDescURL,
+                     this.browser.contentPrincipal,
+                     Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+    openUILink(this.imageDescURL, e, { disallowInheritPrincipal: true,
+                                       referrerURI: gContextMenuContentData.documentURIObject });
+  },
+
+  viewFrameInfo: function() {
+    BrowserPageInfo(gContextMenuContentData.docLocation, null, null,
+                    this.frameOuterWindowID, this.browser);
+  },
+
+  reloadImage: function() {
+    urlSecurityCheck(this.mediaURL,
+                     this.browser.contentPrincipal,
+                     Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+
+    this.browser.messageManager.sendAsyncMessage("ContextMenu:ReloadImage",
+                                                 null, { target: this.target });
+  },
+
+  _canvasToBlobURL: function(target) {
+    let mm = this.browser.messageManager;
+    return new Promise(function(resolve) {
+      mm.sendAsyncMessage("ContextMenu:Canvas:ToBlobURL", {}, { target });
+
+      let onMessage = (message) => {
+        mm.removeMessageListener("ContextMenu:Canvas:ToBlobURL:Result", onMessage);
+        resolve(message.data.blobURL);
+      };
+      mm.addMessageListener("ContextMenu:Canvas:ToBlobURL:Result", onMessage);
+    });
+  },
+
+  // Change current window to the URL of the image, video, or audio.
+  viewMedia: function(e) {
+    let referrerURI = gContextMenuContentData.documentURIObject;
+    let systemPrincipal = Services.scriptSecurityManager.getSystemPrincipal();
+    if (this.onCanvas) {
+      this._canvasToBlobURL(this.target).then(function(blobURL) {
+        openUILink(blobURL, e, { disallowInheritPrincipal: true,
+                                 referrerURI: referrerURI,
+                                 originPrincipal: systemPrincipal});
+      }, Cu.reportError);
+    }
+    else {
+      urlSecurityCheck(this.mediaURL,
+                       this.browser.contentPrincipal,
+                       Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+      openUILink(this.mediaURL, e, { disallowInheritPrincipal: true,
+                                     referrerURI: referrerURI,
+                                     forceAllowDataURI: true });
+    }
+  },
+
+  saveVideoFrameAsImage: function () {
+    let mm = this.browser.messageManager;
+    let isPrivate = PrivateBrowsingUtils.isBrowserPrivate(this.browser);
+
+    let name = "";
+    if (this.mediaURL) {
+      try {
+        let uri = makeURI(this.mediaURL);
+        let url = uri.QueryInterface(Ci.nsIURL);
+        if (url.fileBaseName)
+          name = decodeURI(url.fileBaseName) + ".jpg";
+      } catch (e) { }
+    }
+    if (!name)
+      name = "snapshot.jpg";
+
+    mm.sendAsyncMessage("ContextMenu:SaveVideoFrameAsImage", {}, {
+      target: this.target,
+    });
+
+    let onMessage = (message) => {
+      mm.removeMessageListener("ContextMenu:SaveVideoFrameAsImage:Result", onMessage);
+      let dataURL = message.data.dataURL;
+      saveImageURL(dataURL, name, "SaveImageTitle", true, false,
+                   document.documentURIObject, null, null, null,
+                   isPrivate);
+    };
+    mm.addMessageListener("ContextMenu:SaveVideoFrameAsImage:Result", onMessage);
+  },
+
+  leaveDOMFullScreen: function() {
+    document.exitFullscreen();
+  },
+
+  // Change current window to the URL of the background image.
+  viewBGImage: function(e) {
+    urlSecurityCheck(this.bgImageURL,
+                     this.browser.contentPrincipal,
+                     Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+    openUILink(this.bgImageURL, e, { disallowInheritPrincipal: true,
+                                     referrerURI: gContextMenuContentData.documentURIObject });
+  },
+
+  setDesktopBackground: function() {
+    let mm = this.browser.messageManager;
+
+    mm.sendAsyncMessage("ContextMenu:SetAsDesktopBackground", null,
+                        { target: this.target });
+
+    let onMessage = (message) => {
+      mm.removeMessageListener("ContextMenu:SetAsDesktopBackground:Result",
+                               onMessage);
+
+      if (message.data.disable)
+        return;
+
+      let image = document.createElementNS('http://www.w3.org/1999/xhtml', 'img');
+      image.src = message.data.dataUrl;
+
+      // Confirm since it's annoying if you hit this accidentally.
+      const kDesktopBackgroundURL =
+                    "chrome://browser/content/setDesktopBackground.xul";
+#ifdef XP_MACOSX
+      // On Mac, the Set Desktop Background window is not modal.
+      // Don't open more than one Set Desktop Background window.
+      const wm = Cc["@mozilla.org/appshell/window-mediator;1"].
+                 getService(Ci.nsIWindowMediator);
+      let dbWin = wm.getMostRecentWindow("Shell:SetDesktopBackground");
+      if (dbWin) {
+        dbWin.gSetBackground.init(image);
+        dbWin.focus();
+      }
+      else {
+        openDialog(kDesktopBackgroundURL, "",
+                   "centerscreen,chrome,dialog=no,dependent,resizable=no",
+                   image);
+      }
+#else
+      // On non-Mac platforms, the Set Wallpaper dialog is modal.
+      openDialog(kDesktopBackgroundURL, "",
+                 "centerscreen,chrome,dialog,modal,dependent",
+                 image);
+#endif
+    };
+
+    mm.addMessageListener("ContextMenu:SetAsDesktopBackground:Result", onMessage);
+  },
+
+  // Save URL of clicked-on frame.
+  saveFrame: function () {
+    saveBrowser(this.browser, false, this.frameOuterWindowID);
+  },
+
+  // Helper function to wait for appropriate MIME-type headers and
+  // then prompt the user with a file picker
+  saveHelper: function(linkURL, linkText, dialogTitle, bypassCache, doc, docURI,
+                       windowID, linkDownload) {
+    // canonical def in nsURILoader.h
+    const NS_ERROR_SAVE_LINK_AS_TIMEOUT = 0x805d0020;
+
+    // an object to proxy the data through to
+    // nsIExternalHelperAppService.doContent, which will wait for the
+    // appropriate MIME-type headers and then prompt the user with a
+    // file picker
+    function saveAsListener() {}
+    saveAsListener.prototype = {
+      extListener: null,
+
+      onStartRequest: function saveLinkAs_onStartRequest(aRequest, aContext) {
+
+        // if the timer fired, the error status will have been caused by that,
+        // and we'll be restarting in onStopRequest, so no reason to notify
+        // the user
+        if (aRequest.status == NS_ERROR_SAVE_LINK_AS_TIMEOUT)
+          return;
+
+        timer.cancel();
+
+        // some other error occured; notify the user...
+        if (!Components.isSuccessCode(aRequest.status)) {
+          try {
+            const sbs = Cc["@mozilla.org/intl/stringbundle;1"].
+                        getService(Ci.nsIStringBundleService);
+            const bundle = sbs.createBundle(
+                    "chrome://mozapps/locale/downloads/downloads.properties");
+
+            const title = bundle.GetStringFromName("downloadErrorAlertTitle");
+            const msg = bundle.GetStringFromName("downloadErrorGeneric");
+
+            const promptSvc = Cc["@mozilla.org/embedcomp/prompt-service;1"].
+                              getService(Ci.nsIPromptService);
+            const wm = Cc["@mozilla.org/appshell/window-mediator;1"].
+                       getService(Ci.nsIWindowMediator);
+            let window = wm.getOuterWindowWithId(windowID);
+            promptSvc.alert(window, title, msg);
+          } catch (ex) {}
+          return;
+        }
+
+        let extHelperAppSvc =
+          Cc["@mozilla.org/uriloader/external-helper-app-service;1"].
+          getService(Ci.nsIExternalHelperAppService);
+        let channel = aRequest.QueryInterface(Ci.nsIChannel);
+        this.extListener =
+          extHelperAppSvc.doContent(channel.contentType, aRequest,
+                                    null, true, window);
+        this.extListener.onStartRequest(aRequest, aContext);
+      },
+
+      onStopRequest: function saveLinkAs_onStopRequest(aRequest, aContext,
+                                                       aStatusCode) {
+        if (aStatusCode == NS_ERROR_SAVE_LINK_AS_TIMEOUT) {
+          // do it the old fashioned way, which will pick the best filename
+          // it can without waiting.
+          saveURL(linkURL, linkText, dialogTitle, bypassCache, false, docURI,
+                  doc);
+        }
+        if (this.extListener)
+          this.extListener.onStopRequest(aRequest, aContext, aStatusCode);
+      },
+
+      onDataAvailable: function saveLinkAs_onDataAvailable(aRequest, aContext,
+                                                           aInputStream,
+                                                           aOffset, aCount) {
+        this.extListener.onDataAvailable(aRequest, aContext, aInputStream,
+                                         aOffset, aCount);
+      }
+    }
+
+    function callbacks() {}
+    callbacks.prototype = {
+      getInterface: function sLA_callbacks_getInterface(aIID) {
+        if (aIID.equals(Ci.nsIAuthPrompt) || aIID.equals(Ci.nsIAuthPrompt2)) {
+          // If the channel demands authentication prompt, we must cancel it
+          // because the save-as-timer would expire and cancel the channel
+          // before we get credentials from user.  Both authentication dialog
+          // and save as dialog would appear on the screen as we fall back to
+          // the old fashioned way after the timeout.
+          timer.cancel();
+          channel.cancel(NS_ERROR_SAVE_LINK_AS_TIMEOUT);
+        }
+        throw Cr.NS_ERROR_NO_INTERFACE;
+      }
+    }
+
+    // if it we don't have the headers after a short time, the user
+    // won't have received any feedback from their click.  that's bad.  so
+    // we give up waiting for the filename.
+    function timerCallback() {}
+    timerCallback.prototype = {
+      notify: function sLA_timer_notify(aTimer) {
+        channel.cancel(NS_ERROR_SAVE_LINK_AS_TIMEOUT);
+        return;
+      }
+    }
+
+    // setting up a new channel for 'right click - save link as ...'
+    // ideally we should use:
+    // * doc            - as the loadingNode, and/or
+    // * this.principal - as the loadingPrincipal
+    // for now lets use systemPrincipal to bypass mixedContentBlocker
+    // checks after redirects, see bug: 1136055
+    var channel = NetUtil.newChannel({
+                    uri: makeURI(linkURL),
+                    loadUsingSystemPrincipal: true
+                  });
+
+    if (linkDownload)
+      channel.contentDispositionFilename = linkDownload;
+    if (channel instanceof Ci.nsIPrivateBrowsingChannel) {
+      let docIsPrivate = PrivateBrowsingUtils.isBrowserPrivate(gBrowser.selectedBrowser);
+      channel.setPrivate(docIsPrivate);
+    }
+    channel.notificationCallbacks = new callbacks();
+
+    let flags = Ci.nsIChannel.LOAD_CALL_CONTENT_SNIFFERS;
+
+    if (bypassCache)
+      flags |= Ci.nsIRequest.LOAD_BYPASS_CACHE;
+
+    if (channel instanceof Ci.nsICachingChannel)
+      flags |= Ci.nsICachingChannel.LOAD_BYPASS_LOCAL_CACHE_IF_BUSY;
+
+    channel.loadFlags |= flags;
+
+    if (channel instanceof Ci.nsIHttpChannel) {
+      channel.referrer = docURI;
+      if (channel instanceof Ci.nsIHttpChannelInternal)
+        channel.forceAllowThirdPartyCookie = true;
+    }
+
+    // fallback to the old way if we don't see the headers quickly
+    var timeToWait =
+      gPrefService.getIntPref("browser.download.saveLinkAsFilenameTimeout");
+    var timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+    timer.initWithCallback(new timerCallback(), timeToWait,
+                           timer.TYPE_ONE_SHOT);
+
+    // kick off the channel with our proxy object as the listener
+    channel.asyncOpen2(new saveAsListener());
+  },
+
+  // Save URL of clicked-on link.
+  saveLink: function() {
+    urlSecurityCheck(this.linkURL, this.principal);
+    this.saveHelper(this.linkURL, this.linkTextStr, null, true, this.ownerDoc,
+                    gContextMenuContentData.documentURIObject,
+                    this.frameOuterWindowID,
+                    this.linkDownload);
+  },
+
+  // Backwards-compatibility wrapper
+  saveImage : function() {
+    if (this.onCanvas || this.onImage)
+        this.saveMedia();
+  },
+
+  // Save URL of the clicked upon image, video, or audio.
+  saveMedia: function() {
+    let doc = this.ownerDoc;
+    let referrerURI = gContextMenuContentData.documentURIObject;
+    let isPrivate = PrivateBrowsingUtils.isBrowserPrivate(this.browser);
+    if (this.onCanvas) {
+      // Bypass cache, since it's a data: URL.
+      this._canvasToBlobURL(this.target).then(function(blobURL) {
+        saveImageURL(blobURL, "canvas.png", "SaveImageTitle",
+                     true, false, referrerURI, null, null, null,
+                     isPrivate);
+      }, Cu.reportError);
+    }
+    else if (this.onImage) {
+      urlSecurityCheck(this.mediaURL, this.principal);
+      saveImageURL(this.mediaURL, null, "SaveImageTitle", false,
+                   false, referrerURI, null, gContextMenuContentData.contentType,
+                   gContextMenuContentData.contentDisposition, isPrivate);
+    }
+    else if (this.onVideo || this.onAudio) {
+      urlSecurityCheck(this.mediaURL, this.principal);
+      var dialogTitle = this.onVideo ? "SaveVideoTitle" : "SaveAudioTitle";
+      this.saveHelper(this.mediaURL, null, dialogTitle, false, doc, referrerURI,
+                      this.frameOuterWindowID, "");
+    }
+  },
+
+  // Backwards-compatibility wrapper
+  sendImage : function() {
+    if (this.onCanvas || this.onImage)
+        this.sendMedia();
+  },
+
+  sendMedia: function() {
+    MailIntegration.sendMessage(this.mediaURL, "");
+  },
+
+  castVideo: function() {
+    CastingApps.openExternal(this.target, window);
+  },
+
+  populateCastVideoMenu: function(popup) {
+    let videoEl = this.target;
+    popup.innerHTML = null;
+    let doc = popup.ownerDocument;
+    let services = CastingApps.getServicesForVideo(videoEl);
+    services.forEach(service => {
+      let item = doc.createElement("menuitem");
+      item.setAttribute("label", service.friendlyName);
+      item.addEventListener("command", event => {
+        CastingApps.sendVideoToService(videoEl, service);
+      });
+      popup.appendChild(item);
+    });
+  },
+
+  playPlugin: function() {
+    gPluginHandler.contextMenuCommand(this.browser, this.target, "play");
+  },
+
+  hidePlugin: function() {
+    gPluginHandler.contextMenuCommand(this.browser, this.target, "hide");
+  },
+
+  // Generate email address and put it on clipboard.
+  copyEmail: function() {
+    // Copy the comma-separated list of email addresses only.
+    // There are other ways of embedding email addresses in a mailto:
+    // link, but such complex parsing is beyond us.
+    var url = this.linkURL;
+    var qmark = url.indexOf("?");
+    var addresses;
+
+    // 7 == length of "mailto:"
+    addresses = qmark > 7 ? url.substring(7, qmark) : url.substr(7);
+
+    // Let's try to unescape it using a character set
+    // in case the address is not ASCII.
+    try {
+      const textToSubURI = Cc["@mozilla.org/intl/texttosuburi;1"].
+                           getService(Ci.nsITextToSubURI);
+      addresses = textToSubURI.unEscapeURIForUI(gContextMenuContentData.charSet,
+                                                addresses);
+    }
+    catch(ex) {
+      // Do nothing.
+    }
+
+    var clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].
+                    getService(Ci.nsIClipboardHelper);
+    clipboard.copyString(addresses);
+  },
+
+  copyLink: function() {
+    // If we're in a view source tab, remove the view-source: prefix
+    let linkURL = this.linkURL.replace(/^view-source:/, "");
+    var clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].
+                    getService(Ci.nsIClipboardHelper);
+    clipboard.copyString(linkURL);
+  },
+
+  ///////////////
+  // Utilities //
+  ///////////////
+
+  // Show/hide one item (specified via name or the item element itself).
+  showItem: function(aItemOrId, aShow) {
+    var item = aItemOrId.constructor == String ?
+      document.getElementById(aItemOrId) : aItemOrId;
+    if (item)
+      item.hidden = !aShow;
+  },
+
+  // Set given attribute of specified context-menu item.  If the
+  // value is null, then it removes the attribute (which works
+  // nicely for the disabled attribute).
+  setItemAttr: function(aID, aAttr, aVal ) {
+    var elem = document.getElementById(aID);
+    if (elem) {
+      if (aVal == null) {
+        // null indicates attr should be removed.
+        elem.removeAttribute(aAttr);
+      }
+      else {
+        // Set attr=val.
+        elem.setAttribute(aAttr, aVal);
+      }
+    }
+  },
+
+  // Set context menu attribute according to like attribute of another node
+  // (such as a broadcaster).
+  setItemAttrFromNode: function(aItem_id, aAttr, aOther_id) {
+    var elem = document.getElementById(aOther_id);
+    if (elem && elem.getAttribute(aAttr) == "true")
+      this.setItemAttr(aItem_id, aAttr, "true");
+    else
+      this.setItemAttr(aItem_id, aAttr, null);
+  },
+
+  // Temporary workaround for DOM api not yet implemented by XUL nodes.
+  cloneNode: function(aItem) {
+    // Create another element like the one we're cloning.
+    var node = document.createElement(aItem.tagName);
+
+    // Copy attributes from argument item to the new one.
+    var attrs = aItem.attributes;
+    for (var i = 0; i < attrs.length; i++) {
+      var attr = attrs.item(i);
+      node.setAttribute(attr.nodeName, attr.nodeValue);
+    }
+
+    // Voila!
+    return node;
+  },
+
+  // Generate fully qualified URL for clicked-on link.
+  getLinkURL: function() {
+    var href = this.link.href;
+    if (href)
+      return href;
+
+    href = this.link.getAttribute("href") ||
+           this.link.getAttributeNS("http://www.w3.org/1999/xlink", "href");
+
+    if (!href || !href.match(/\S/)) {
+      // Without this we try to save as the current doc,
+      // for example, HTML case also throws if empty
+      throw "Empty href";
+    }
+
+    return makeURLAbsolute(this.link.baseURI, href);
+  },
+
+  getLinkURI: function() {
+    try {
+      return makeURI(this.linkURL);
+    }
+    catch (ex) {
+     // e.g. empty URL string
+    }
+
+    return null;
+  },
+
+  getLinkProtocol: function() {
+    if (this.linkURI)
+      return this.linkURI.scheme; // can be |undefined|
+
+    return null;
+  },
+
+  // Get text of link.
+  getLinkText: function() {
+    var text = gatherTextUnder(this.link);
+    if (!text || !text.match(/\S/)) {
+      text = this.link.getAttribute("title");
+      if (!text || !text.match(/\S/)) {
+        text = this.link.getAttribute("alt");
+        if (!text || !text.match(/\S/))
+          text = this.linkURL;
+      }
+    }
+
+    return text;
+  },
+
+  // Kept for addon compat
+  linkText: function() {
+    return this.linkTextStr;
+  },
+
+  isMediaURLReusable: function(aURL) {
+    if (aURL.startsWith("blob:")) {
+      return URL.isValidURL(aURL);
+    }
+    return true;
+  },
+
+  toString: function () {
+    return "contextMenu.target     = " + this.target + "\n" +
+           "contextMenu.onImage    = " + this.onImage + "\n" +
+           "contextMenu.onLink     = " + this.onLink + "\n" +
+           "contextMenu.link       = " + this.link + "\n" +
+           "contextMenu.inFrame    = " + this.inFrame + "\n" +
+           "contextMenu.hasBGImage = " + this.hasBGImage + "\n";
+  },
+
+  isTargetATextBox: function(node) {
+    if (node instanceof HTMLInputElement)
+      return node.mozIsTextField(false);
+
+    return (node instanceof HTMLTextAreaElement);
+  },
+
+  // Determines whether or not the separator with the specified ID should be
+  // shown or not by determining if there are any non-hidden items between it
+  // and the previous separator.
+  shouldShowSeparator: function (aSeparatorID) {
+    var separator = document.getElementById(aSeparatorID);
+    if (separator) {
+      var sibling = separator.previousSibling;
+      while (sibling && sibling.localName != "menuseparator") {
+        if (!sibling.hidden)
+          return true;
+        sibling = sibling.previousSibling;
+      }
+    }
+    return false;
+  },
+
+  addDictionaries: function() {
+    var uri = formatURL("browser.dictionaries.download.url", true);
+
+    var locale = "-";
+    try {
+      locale = gPrefService.getComplexValue("intl.accept_languages",
+                                            Ci.nsIPrefLocalizedString).data;
+    }
+    catch (e) { }
+
+    var version = "-";
+    try {
+      version = Cc["@mozilla.org/xre/app-info;1"].
+                getService(Ci.nsIXULAppInfo).version;
+    }
+    catch (e) { }
+
+    uri = uri.replace(/%LOCALE%/, escape(locale)).replace(/%VERSION%/, version);
+
+    var newWindowPref = gPrefService.getIntPref("browser.link.open_newwindow");
+    var where = newWindowPref == 3 ? "tab" : "window";
+
+    openUILinkIn(uri, where);
+  },
+
+  bookmarkThisPage: function CM_bookmarkThisPage() {
+    window.top.PlacesCommandHook.bookmarkPage(this.browser, PlacesUtils.bookmarksMenuFolderId, true);
+  },
+
+  bookmarkLink: function CM_bookmarkLink() {
+    window.top.PlacesCommandHook.bookmarkLink(PlacesUtils.bookmarksMenuFolderId,
+                                              this.linkURL, this.linkTextStr);
+  },
+
+  addBookmarkForFrame: function CM_addBookmarkForFrame() {
+    let uri = gContextMenuContentData.documentURIObject;
+    let mm = this.browser.messageManager;
+
+    let onMessage = (message) => {
+      mm.removeMessageListener("ContextMenu:BookmarkFrame:Result", onMessage);
+
+      window.top.PlacesCommandHook.bookmarkLink(PlacesUtils.bookmarksMenuFolderId,
+                                                uri.spec,
+                                                message.data.title,
+                                                message.data.description)
+                                  .catch(Components.utils.reportError);
+    };
+    mm.addMessageListener("ContextMenu:BookmarkFrame:Result", onMessage);
+
+    mm.sendAsyncMessage("ContextMenu:BookmarkFrame", null, { target: this.target });
+  },
+
+  savePageAs: function CM_savePageAs() {
+    saveBrowser(this.browser);
+  },
+
+  printFrame: function CM_printFrame() {
+    PrintUtils.printWindow(this.frameOuterWindowID, this.browser);
+  },
+
+  switchPageDirection: function CM_switchPageDirection() {
+    this.browser.messageManager.sendAsyncMessage("SwitchDocumentDirection");
+  },
+
+  mediaCommand : function CM_mediaCommand(command, data) {
+    let mm = this.browser.messageManager;
+    let win = this.browser.ownerGlobal;
+    let windowUtils = win.QueryInterface(Ci.nsIInterfaceRequestor)
+                         .getInterface(Ci.nsIDOMWindowUtils);
+    mm.sendAsyncMessage("ContextMenu:MediaCommand",
+                        {command: command,
+                         data: data,
+                         handlingUserInput: windowUtils.isHandlingUserInput},
+                        {element: this.target});
+  },
+
+  copyMediaLocation : function () {
+    var clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].
+                    getService(Ci.nsIClipboardHelper);
+    clipboard.copyString(this.mediaURL);
+  },
+
+  drmLearnMore: function(aEvent) {
+    let drmInfoURL = Services.urlFormatter.formatURLPref("app.support.baseURL") + "drm-content";
+    let dest = whereToOpenLink(aEvent);
+    // Don't ever want this to open in the same tab as it'll unload the
+    // DRM'd video, which is going to be a bad idea in most cases.
+    if (dest == "current") {
+      dest = "tab";
+    }
+    openUILinkIn(drmInfoURL, dest);
+  },
+
+  get imageURL() {
+    if (this.onImage)
+      return this.mediaURL;
+    return "";
+  },
+
+  // Formats the 'Search <engine> for "<selection or link text>"' context menu.
+  formatSearchContextItem: function() {
+    var menuItem = document.getElementById("context-searchselect");
+    let selectedText = this.isTextSelected ? this.textSelected : this.linkTextStr;
+
+    // Store searchTerms in context menu item so we know what to search onclick
+    menuItem.searchTerms = selectedText;
+
+    // Copied to alert.js' prefillAlertInfo().
+    // If the JS character after our truncation point is a trail surrogate,
+    // include it in the truncated string to avoid splitting a surrogate pair.
+    if (selectedText.length > 15) {
+      let truncLength = 15;
+      let truncChar = selectedText[15].charCodeAt(0);
+      if (truncChar >= 0xDC00 && truncChar <= 0xDFFF)
+        truncLength++;
+      selectedText = selectedText.substr(0,truncLength) + this.ellipsis;
+    }
+
+    // format "Search <engine> for <selection>" string to show in menu
+    let engineName = Services.search.currentEngine.name;
+    var menuLabel = gNavigatorBundle.getFormattedString("contextMenuSearch",
+                                                        [engineName,
+                                                         selectedText]);
+    menuItem.label = menuLabel;
+    menuItem.accessKey = gNavigatorBundle.getString("contextMenuSearch.accesskey");
+  },
+
+  _getTelemetryClickInfo: function(aXulMenu) {
+    this._onPopupHiding = () => {
+      aXulMenu.ownerDocument.removeEventListener("command", activationHandler, true);
+      aXulMenu.removeEventListener("popuphiding", this._onPopupHiding, true);
+      delete this._onPopupHiding;
+
+      let eventKey = [
+          this._telemetryPageContext,
+          this._telemetryHadCustomItems ? "withcustom" : "withoutcustom"
+      ];
+      let target = this._telemetryClickID || "close-without-interaction";
+      BrowserUITelemetry.registerContextMenuInteraction(eventKey, target);
+    };
+    let activationHandler = (e) => {
+      // Deal with command events being routed to command elements; figure out
+      // what triggered the event (which will have the right e.target)
+      if (e.sourceEvent) {
+        e = e.sourceEvent;
+      }
+      // Target should be in the menu (this catches using shortcuts for items
+      // not in the menu while the menu is up)
+      if (!aXulMenu.contains(e.target)) {
+        return;
+      }
+
+      // Check if this is a page menu item:
+      if (e.target.hasAttribute(PageMenuParent.GENERATEDITEMID_ATTR)) {
+        this._telemetryClickID = "custom-page-item";
+      } else {
+        this._telemetryClickID = (e.target.id || "unknown").replace(/^context-/i, "");
+      }
+    };
+    aXulMenu.ownerDocument.addEventListener("command", activationHandler, true);
+    aXulMenu.addEventListener("popuphiding", this._onPopupHiding, true);
+  },
+
+  _getTelemetryPageContextInfo: function() {
+    let rv = [];
+    for (let k of ["isContentSelected", "onLink", "onImage", "onCanvas", "onVideo", "onAudio",
+                   "onTextInput"]) {
+      if (this[k]) {
+        rv.push(k.replace(/^(?:is|on)(.)/, (match, firstLetter) => firstLetter.toLowerCase()));
+      }
+    }
+    if (!rv.length) {
+      rv.push('other');
+    }
+
+    return JSON.stringify(rv);
+  },
+
+  _checkTelemetryForMenu: function(aXulMenu) {
+    this._telemetryClickID = null;
+    this._telemetryPageContext = this._getTelemetryPageContextInfo();
+    this._telemetryHadCustomItems = this.hasPageMenu;
+    this._getTelemetryClickInfo(aXulMenu);
+  },
+
+  createContainerMenu: function(aEvent) {
+    let createMenuOptions = {
+      isContextMenu: true,
+      excludeUserContextId: gContextMenuContentData.userContextId,
+    };
+    return createUserContextMenu(aEvent, createMenuOptions);
+  },
+};