(async topic => {
  var imp = (m, n = m) => Cu.import(`resource://gre/modules/${m}.jsm`, {})[n];
  var exporter = {
    get dps() {
      delete this.dps;
      return this.dps = imp("DownloadPaths");
    },
    get exporter() {
      delete this.exporter;
      return this.exporter = imp("BookmarkHTMLUtils", "BookmarkExporter");
    },
    async export(popup) {
      var win = popup.ownerGlobal, tn = popup.triggerNode;
      var node, pu = win.PlacesUtils, bm = pu.bookmarks;

      if (tn.nodeName == "treechildren") node = popup._view.selectedNode;
      else if (tn.id == "OtherBookmarks")
        node = {bookmarkGuid: bm.unfiledGuid, title: tn.getAttribute("label")};
      else node = tn._placesNode || popup._view.result.root;

      var fp = Cc["@mozilla.org/filepicker;1"].createInstance(Ci.nsIFilePicker);
      fp.init(
        !("inIsolatedMozBrowser" in win.browsingContext.originAttributes)
        ? win.browsingContext
        : win, win.PlacesUIUtils.promptLocalization.formatValueSync("places-bookmarks-export"), fp.modeSave);
      fp.appendFilters(fp.filterHTML);
      fp.defaultString = (node.title ? this.dps.sanitize(node.title) : "untitled") + ".html";

      if (await new Promise(fp.open) == fp.returnCancel) return;

      var tree = await pu.promiseBookmarksTree(pu.getConcreteItemGuid(node), {includeItemIds: true});
      tree.title = bm.getLocalizedTitle(tree);
      var bookmarks = {children: [
        {root: "toolbarFolder"},
        {root: "unfiledBookmarksFolder"},
        {root: "bookmarksMenuFolder", children: [tree], guid: bm.menuGuid}
      ]};
      new this.exporter(bookmarks).exportToFile(fp.file.path);
    },
    observe(doc) {
      var popup = doc.querySelector("menupopup#placesContext");
      if (!popup) return;

      var menuitem = (doc.createXULElement || doc.createElement).call(doc, "menuitem");
      for(var args of Object.entries({
        label: "Экспорт папки в HTML",
        selection: "folder",
        "node-type": "folder",
        "selection-type": "single|none",
        id: "placesContext_exportFolder",
        oncommand: "exporter.export(parentNode);"
      }))
        menuitem.setAttribute(...args);

      menuitem.exporter = this;
      doc.getElementById("placesContext_openSeparator").before(menuitem);
    }
  };
  Services.obs.addObserver(exporter, topic);
  Services.obs.addObserver(function quit(s, t) {
    Services.obs.removeObserver(quit, t);
    Services.obs.removeObserver(exporter, topic);
  }, "quit-application-granted");
})("chrome-document-loaded");

// Назначить клавишу F8 для исправления раскладки введенного текста
// код SwitchKeyboardLayout в файле custom_script.js

try {(id => {
    var listener = {
        get obj() {
            var obj = document.getElementById(id);
            if (obj) obj = obj.linkedObj;
            else {
                obj = Cu.import("resource:///modules/CustomizableUI.jsm", {})
                    .gPalette.get(id);
                if (obj) obj = obj.implementation;
                else {
                    Services.console.logStringMessage(id + " not found");
                    return this.destroy() || {switch() {}};
                }
            }
            delete this.obj; return this.obj = obj;
        },
        handleEvent(e) {
            if (e.key != "F8" || e.ctrlKey || e.shiftKey || e.altKey || e.repeat)
                return;
            //e.preventDefault();
            //e.stopPropagation();
            this.obj.switch(document);
        },
        destroy: function destroy() {
            removeEventListener("keydown", this, true);
            removeEventListener("unload", destroy);
        }
    };
    addEventListener("keydown", listener, true);
    addEventListener("unload", listener.destroy);
})("SwitchKeyboardLayout");} catch(ex) {Cu.reportError(ex);}

// Switch Keyboard Layout button (порт с СВ)

try {(keybUtils => CustomizableUI.createWidget({
    type: "custom",
    id: "SwitchKeyboardLayout",
    onBuild(doc) {
        var btn = doc.createXULElement("toolbarbutton");
        btn.id = this.id;
        btn.label = btn.tooltipText = "Switch Keyboard Layout";
        btn.image = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAMAAAAoLQ9TAAAAk1BMVEX///8/Pz8BAQF8fHwJCQkCAgIJCQl8fHx9fX0AAABJSUkBAQENDQ0wMDBVVVUAAABra2t0dHR7e3thYWEBAQEAAAAAAAABAQEAAAAgICABAQEBAQH8/Pzw8PDp6en39/fj4+Pe3t41V9I/YeWKioqDg4N9fX0jRa8wUrVoaGhkhuxWeNx1dXVCZMhvb28kRqsqTL4KidXxAAAAHHRSTlMAAABndwAAAAA0blVZcm1naWhNa6hrcJ8AAKRU4jk/3gAAAHVJREFUeF6FyMUCwjAUBdEbaQupUMOjqMv/fx1dQN6yZ3aDcWnyw6ezoRWNYc15kqKQZCFlgTKQQwgllL/dn5f3+bPb+6P3CpWNw56srdCZOMzDmA61i8O9nKvRaHLVukEryFKIFtnkj7ENYxmNdd5v+5xj1BcJ/w9Kj6K7ZAAAAABJRU5ErkJggg==";

        btn.setAttribute("oncommand", "linkedObj.switch(document);");
        btn.className = "toolbarbutton-1 chromeclass-toolbar-additional";
        btn.linkedObj = this;
        return btn;
    },
    switch(doc) {
        var br = doc.activeElement;
        br && br.localName == "browser" && br.isRemoteBrowser
            ? br.messageManager.loadFrameScript(this.url, false)
            : this.keybUtils.switchSelKeybLayout();
    },
    get url() {
        delete this.url;
        return this.url = `data:;charset=utf-8,(${
            encodeURIComponent(keybUtils)
        }).switchSelKeybLayout()`;
    },
    get keybUtils() {
        delete this.keybUtils;
        var def = "let{KeyEvent,HTMLInputElement,HTMLTextAreaElement}=Cu.getGlobalForObject(Services);";
        var url = `data:;charset=utf-8,${def}%0Athis.keybUtils=${encodeURIComponent(keybUtils)}`;
        Services.scriptloader.loadSubScript(url, this);
        var {id} = this;
        this.keybUtils.getFocusedElement = function(_subCall, _focusFixed) {
            var window = Services.focus.activeWindow, {document} = window;
            var button = document.getElementById(id);
            if(
                !_focusFixed
                && "closeMenus" in window
                && document.commandDispatcher.focusedElement == button
            ) {
                window.closeMenus(button);
                window.setTimeout(function(_this) {
                    _this.switchSelKeybLayout(_subCall, true);
                }, 0, this);
                return;
            }
            return document.commandDispatcher.focusedElement;
        }
        return this.keybUtils;
    }
}))(`{
    //== Options
    noSelBehavior: { // Shift+Home
        ctrlKey:  false,
        altKey:   false,
        shiftKey: true,
        metaKey:  false,
        keyCode:  KeyEvent.DOM_VK_HOME,
        charCode: 0
    },
    // 0 - do nothing
    // 1 - convert all text
    // Or use object like following to simulate "keypress" event:

    convTableForward: { // ru -> en
        "\\"": "@",
        ":": "^",
        ";": "$",
        "?": "&",
        ",": "?",
        "/": "|",
        ".": "/",
        "э": "'",
        "б": ",",
        "ю": ".",
        "Ж": ":",
        "ж": ";",
        "Б": "<",
        "Ю": ">",
        "Э": "\\"",
        "х": "[",
        "ъ": "]",
        "ё": "\`",
        "Х": "{",
        "Ъ": "}",
        "Ё": "~",
        "№": "#",
        "Ф": "A",
        "ф": "a",
        "И": "B",
        "и": "b",
        "С": "C",
        "с": "c",
        "В": "D",
        "в": "d",
        "У": "E",
        "у": "e",
        "А": "F",
        "а": "f",
        "П": "G",
        "п": "g",
        "Р": "H",
        "р": "h",
        "Ш": "I",
        "ш": "i",
        "О": "J",
        "о": "j",
        "Л": "K",
        "л": "k",
        "Д": "L",
        "д": "l",
        "Ь": "M",
        "ь": "m",
        "Т": "N",
        "т": "n",
        "Щ": "O",
        "щ": "o",
        "З": "P",
        "з": "p",
        "Й": "Q",
        "й": "q",
        "К": "R",
        "к": "r",
        "Ы": "S",
        "ы": "s",
        "Е": "T",
        "е": "t",
        "Г": "U",
        "г": "u",
        "М": "V",
        "м": "v",
        "Ц": "W",
        "ц": "w",
        "Ч": "X",
        "ч": "x",
        "Н": "Y",
        "н": "y",
        "Я": "Z",
        "я": "z",
        __proto__: null
    },
    //== End of options

    get convTableBackward() {
        var ctb = { __proto__: null };
        var ctf = this.convTableForward;
        for(var c in ctf)
            ctb[ctf[c]] = c;
        delete this.convTableBackward;
        return this.convTableBackward = ctb;
    },
    inPrimaryLayout: function(s) {
        for(var i = 0, l = s.length; i < l; ++i) {
            var c = s.charAt(i);
/*
            if(c in this.convTableForward)
                return true;
            if(c in this.convTableBackward)
                return false;
*/
            var primary = c in this.convTableForward;
            if(primary ^ c in this.convTableBackward)
                return primary;        }

        return false;
    },
    switchKeybLayout: function(s, convTable) {
        var res = "";
        for(var i = 0, l = s.length; i < l; ++i) {
            var c = s.charAt(i);
            res += c in convTable ? convTable[c] : c;
        }
        return res;
    },
    getFocusedElement: function() {
        return Cc["@mozilla.org/focus-manager;1"].getService(Ci.nsIFocusManager)
            .getFocusedElementForWindow(content, true, {});
    },
    switchSelKeybLayout: function(_subCall, _focusFixed) {
        var fe = this.getFocusedElement(_subCall, _focusFixed);
        if(!fe)
            return;
        if(HTMLInputElement.isInstance(fe) || HTMLTextAreaElement.isInstance(fe)) {
            var ta = fe;
            try {
                var val = ta.value;
                var sel = val.substring(ta.selectionStart, ta.selectionEnd);
            }
            catch(e) { // Non-text HTMLInputElement
                return;
            }
            if(!sel && val && this.noSelBehavior && !_subCall) {
                if(this.noSelBehavior == 1) {
                    ta.selectionStart = 0;
                    ta.selectionEnd = val.length;
                    sel = val;
                }
                else {
                    this.handleNoSel(ta);
                    return;
                }
            }
            if(!sel)
                return;
            var res = this.switchKeybLayout(
                sel,
                this.inPrimaryLayout(sel)
                    ? this.convTableForward
                    : this.convTableBackward
            );
            if(res != sel)
                this.insertText(ta, res);
        }
        else if(fe.contentEditable == "true") {
            var doc = fe.ownerDocument;

            var docURI = doc.documentURI;
            if(
                docURI.substr(0, 5) == "data:"
                && docURI.indexOf("chrome://browser/skin/devtools/") != -1
            ) {
                //~ todo: seems like we only can use paste from clipboard here...
                return;
            }

            var sel = doc.defaultView.getSelection();
            var rng = sel.rangeCount && sel.getRangeAt(0);
            var tmpNode;
            if(!rng || rng.collapsed) {
                if(!this.noSelBehavior || _subCall)
                    return;
                if(this.noSelBehavior == 1) {
                    var r = doc.createRange();
                    r.selectNodeContents(fe);
                    sel.removeAllRanges();
                    sel.addRange(r);
                    tmpNode = fe.cloneNode(true);
                }
                else {
                    this.handleNoSel(fe);
                    return;
                }
            }
            else {
                tmpNode = doc.createElementNS("http://www.w3.org/1999/xhtml", "div");
                tmpNode.appendChild(rng.cloneContents());
            }

            var orig = tmpNode.innerHTML;
            var convTable = this.inPrimaryLayout(tmpNode.textContent)
                ? this.convTableForward
                : this.convTableBackward;

            var _this = this;
            var parseChildNodes = function(node) {
                if(Element.isInstance(node)) {
                    var childNodes = node.childNodes;
                    for(var i = childNodes.length - 1; i >= 0; --i)
                        parseChildNodes(childNodes[i]);
                }
                else if(node.nodeType == node.TEXT_NODE) {
                    var text = node.nodeValue;
                    var newText = _this.switchKeybLayout(node.nodeValue, convTable);
                    if(newText != text)
                        node.parentNode.replaceChild(doc.createTextNode(newText), node);
                }
            }
            parseChildNodes(tmpNode);

            var res = tmpNode.innerHTML;
            if(res != orig)
                doc.execCommand("insertHTML", false, res);
        }
    },
    handleNoSel: function(node) {
        this.select(node);
        this.switchSelKeybLayout(true);
    },
    select: function(node) {
        var e = this.noSelBehavior;
        if(!e || typeof e != "object")
            return;

/*
        var evt = new node.ownerGlobal.KeyboardEvent(
            "keypress", {bubbles: true, cancelable: true, ...e}
        );

        node.dispatchEvent(evt);
    },
*/

	if(ChromeUtils.domProcessChild.childID) {
            var cmd = this.beh2cmd[e.ctrlKey + "_" + e.shiftKey + "_" + e.keyCode];
            cmd && docShell.doCommand(cmd);
        }
        else node.dispatchEvent(new node.ownerGlobal.KeyboardEvent(
            "keypress", {bubbles: true, cancelable: true, ...e}
        ));
    },
    beh2cmd: { // Ctrl_Shift_VK
        false_true_36: "cmd_selectLinePrevious", // Shift+Home
    },

    insertText: function(ta, text) {
        //var editor = ta.QueryInterface(Components.interfaces.nsIDOMNSEditableElement).editor
        var editor = ta.editor
            .QueryInterface(Components.interfaces.nsIPlaintextEditor || Ci.nsIEditor);
        if(editor.flags & editor.eEditorReadonlyMask)
            return;

        var sTop = ta.scrollTop;
        var sHeight = ta.scrollHeight;
        var sLeft = ta.scrollLeft;
        // var sWidth = ta.scrollWidth;

        if(text)
            editor.insertText(text);
        else
            editor.deleteSelection(0, 0);

        ta.scrollTop = sTop + (ta.scrollHeight - sHeight);
        ta.scrollLeft = sLeft; // + (ta.scrollWidth - sWidth);
    }
}`)} catch(ex) {Cu.reportError(ex);}