TypeError: this.contentWindow.windowRoot is null PictureInPictureChild.jsm:353:5
Warning: attempting to write 12282 bytes to preference browser.uiCustomization.state. This is bad for general performance and memory usage. Such an amount of data should rather be written to an external file. This preference will not be sent to any content processes.
[Custom Buttons :: Source Editor] 26:23:658 initWindow(): isFrame: false
[Custom Buttons :: Source Editor] 26:24:162 loadOverlay(): chrome://global/content/editMenuOverlay.xul
[Custom Buttons :: Source Editor] 26:24:163 loadOverlay(): chrome://browser/content/devtools/source-editor-overlay.xul
[Custom Buttons :: Source Editor] 26:48:433 destroyWindow(): isFrame: undefined
Unchecked lastError value: Error: Could not establish connection. Receiving end does not exist. 2 background.js:4408
Unchecked lastError value: Error: Could not establish connection. Receiving end does not exist. background.js:68
Warning: attempting to write 12307 bytes to preference browser.uiCustomization.state. This is bad for general performance and memory usage. Such an amount of data should rather be written to an external file. This preference will not be sent to any content processes.
TypeError: doc.getAnonymousElementByAttribute is not a function button.js:2429:11
TypeError: doc.getAnonymousElementByAttribute is not a function button.js:2429:11
toggleImage aftercustomization
toggleImage aftercustomization done

// Настройка функций кликов мыши для кнопки ...................
this.onmousedown = e => {

    if (e.button == 0) // длинный левый клик
        self.timer = setTimeout(() => {
            self.onmouseup = null;
            cbu.getPrefs("CB.Proxy.connectionsInTab")
                ? openConnectionsInTab() : openConnections();
        }, 500);

    this.onmouseup = e => { // левый клик
        if (e.button) return;
        clearTimeout(self.timer);

        switch(cbu.getPrefs("network.proxy.type")) {
            case 0:  var data = 1; break;
            case 1:  var data = 2; break;
            //case 2:  var data = 0; break;
            default: var data = 0; 
        }
        cbu.setPrefs("network.proxy.type", data);
    }
}
// правый клик
this.oncontextmenu = e => e.detail == 2 && !menuPopup.hidePopup()
    || e.ctrlKey || !!menuPopup.openPopup(this, "after_start");


// Подсказка для кнопки ...................
this.onmouseover = () => this.tooltipText =
    "Proxy \nЛ:  Переключить прокси \nДЛ: Открыть настройки прокси" +
    "\nП:  Mеню кнопки \nДП: CB меню \n\nТекущие настройки прокси: " +
    "\nIP: " + cbu.getPrefs("network.proxy.http") + "\nПорт: " +
    cbu.getPrefs("network.proxy.http_port");


// Создать меню для кнопки ...................
var array = [
    {label: "Добавление прокси в контекстом меню", value: 'CB.Proxy.inContextMenu'},
    {label: "Открывать настройки прокси как вкладку", value: 'CB.Proxy.connectionsInTab'},
    {label: "Переключать на режим 'Без прокси' при закрытии браузера ", value: 'CB.Proxy.reset'}
];

var menuPopup = document.getElementById('mainPopupSet').appendChild(document.createElementNS(xulns, "menupopup"));
array.forEach(m => {
    var mItem = document.createElementNS(xulns, "menuitem");
    mItem.setAttribute("label", m.label);
    mItem.setAttribute("type", "checkbox");
    mItem.setAttribute("checked", cbu.getPrefs(m.value));
    mItem.onclick = () => cbu.setPrefs(m.value, !cbu.getPrefs(m.value));  
    menuPopup.appendChild(mItem);
});
addDestructor(() => menuPopup.remove());


var listenClick = win => {
    var args = ["click", win.close.bind(win), true];
    var unload = () => gBrowser.removeEventListener(...args);
    gBrowser.addEventListener(...args);
    win.addEventListener("unload", unload, {once: true});
}
var version = parseInt(Services.appinfo.platformVersion);
var url = `chrome://browser/content/preferences/connection.x${version >= 72 ? "htm" : "u"}l`;

var fox73 = version >= 73, noop = () => {};
if (fox73) var grid = win => {
    var url = "data:text/css;charset=utf-8," + encodeURIComponent(`
        #proxy-grid, #dnsOverHttps-grid {
            display: grid;
            grid-template-columns: auto 1fr;
            align-items: center;
        }
        #proxy-grid > .thin {
            grid-column-end: 3;
            height: 20px;
        }
        #dnsOverHttps-grid.custom-container-hidden #networkCustomDnsOverHttpsInput,
        #dnsOverHttps-grid.custom-container-hidden #networkCustomDnsOverHttpsInputLabelContainer {
            display: none;
        }
    `);
    (grid = win => win.windowUtils.loadSheetUsingURIString(url, win.windowUtils.AUTHOR_SHEET))(win);
}
var winOpen = win => win.addEventListener("readystatechange", winReady, {once: true, capture: true});
var winReady = e => {
    var win = e.target.ownerGlobal, cw = win.isChromeWindow;
    if (cw || (win.location == url && !win.docShell.name)) winPatch(win, cw);
}
var winPatch = (win, cw) => {
    win.opener = {gSubDialog: {_dialogs: [{
        _frame: {get contentDocument() {
            cw && listenClick(win);
            delete this.contentDocument;
            return this.contentDocument = win.document;
        }},
        resizeVertically: cw ? () => win.sizeToContent() : noop
    }]}};
    fox73 && grid(win);
}
addEventListener("MozBeforeInitialXULLayout", winReady, false, gBrowser.tabpanels || 1);

for(var {contentWindow: win} of gBrowser.browsers)
    win && win.location == url && !win.opener && winPatch(win);


// Функция открывает настройки прокси в окне ...................  
function openConnections() {
    var win = [...Services.wm.getEnumerator(null)].find(w => w.location == url);
    win ? win.focus() : winOpen(openDialog(url, "Proxy", "centerscreen"));
}

// Функция открывает настройки прокси в вкладке ...................
function openConnectionsInTab() {
    var connections = gBrowser.getBrowserForTab(
        gBrowser.selectedTab = gBrowser.addTrustedTab(url)
    );

    // oбработчик ждет пока откроется прокси, удаляет себя и добавляет атрибут
    connections.addEventListener("pageshow",
        e => e.target.documentElement.setAttribute("type", "prefwindow")
    , {once: true});
}


// Установливать нужную иконку кнопки при старте баузера или при изменениях в 'about:config' ...................
var s = "network.proxy.type";
function toggleImage() {
    var {icon} = self;
    switch( cbu.getPrefs(s) ) {
        //case 0: icon.src = self.image; break;
        case 1: icon.src = 'data:image/x-icon;base64,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'; break;
        case 2: icon.src = 'data:image/x-icon;base64,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'; break;
        default: icon.src = self.image;
    }
}
toggleImage();
Services.prefs.addObserver(s, toggleImage, false);
addDestructor(() => Services.prefs.removeObserver(s, toggleImage));


// Переключать на режим 'Без прокси' при закрытии браузера если это разрешено в 'about:config' ...................
var toggleButton = {
    observe(s, t, data) {
        cbu.getPrefs("CB.Proxy.reset") && data == "shutdown" && cbu.setPrefs("network.proxy.type", 0);
    }
};
Services.obs.addObserver(toggleButton, "quit-application", false);


// Создаем меню для добавление прокси в контекстном меню выделенного текста на странице ...................
var contextMenu = document.getElementById("contentAreaContextMenu");
var menuitem = document.createElementNS(xulns,"menuitem");
menuitem.setAttribute("label", "Добавить прокси");
menuitem.setAttribute("class", "menuitem-iconic");
menuitem.setAttribute("image", self.image);
menuitem.onclick =()=> addNewProxy(menuitem);
contextMenu.appendChild(menuitem); // как последний пункт меню
addDestructor(() => menuitem.remove());
addEventListener("popupshowing", () => {
    menuitem.hidden = !cbu.getPrefs("CB.Proxy.inContextMenu") || !gContextMenu.isContentSelected; // !gContextMenu.isTextSelected;
}, false, contextMenu);


// добавление прокси ...................
function addNewProxy(menuitem) {
    var sel = gBrowser.contentDocument
        ? gBrowser.contentDocument.defaultView.getSelection().toString() // Pale Moon  
        : gContextMenu.selectionInfo.fullText; // Firefox

    sel = sel.replace(/^\s+|\s+$/g, ""); // удалить пробелы, слева и справа от строки
    sel = sel.replace(/\s+/g, ":");      // заменить пробелы внутри строки

    // если только порт ...
    if (sel.length < 6 && isFinite(sel)) { 
        var lab = 'порт';
        cbu.setPrefs("network.proxy.http_port", +sel);                    
    }

    // если только адрес ...
    if (sel.length > 5 && !/:/.test(sel) && sel.split(".").length == 4) {
        var lab = 'адрес';
        cbu.setPrefs("network.proxy.http", convertFromUnicode("UTF-8", sel));  
    }

    // если адрес и порт ...    
    if (sel.length > 5 && /:/.test(sel) && sel.split(":").length == 2 && sel.split(".").length == 4) {
        var lab = 'адрес и порт';
        var arr = sel.split(":"), IP = arr[0], port = arr[1];
        cbu.setPrefs("network.proxy.http_port", +port);
        cbu.setPrefs("network.proxy.http", convertFromUnicode("UTF-8", IP));
    }

    // всплывающая подсказка рядом с выделенным текстом ...
    var mainPopupSet = document.getElementById('mainPopupSet');
    var tooltip = mainPopupSet.appendChild(document.createElementNS(xulns,"tooltip"));
    tooltip.style.cssText = "color: red !important; font-weight: bold !important; font-size: 14px !important; -moz-box-orient: horizontal; text-align: center;";

    var image = tooltip.appendChild(document.createElementNS(xulns, "image"));
    image.setAttribute("src", self.image);

    var label = tooltip.appendChild(document.createElementNS(xulns, "label"));
    label.setAttribute("value", "Установлен " + lab + " прокси: " + sel);

    tooltip.openPopup(menuitem.parentNode, "before_start");
    setTimeout(() => mainPopupSet.removeChild(tooltip), 3000);
};


// Конвертировать текст в юникод .............  
function convertFromUnicode(charset, str) {
    var converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].createInstance(Ci.nsIScriptableUnicodeConverter);
    converter.charset = charset;
    str = converter.ConvertFromUnicode(str);
    return str + converter.Finish();
}

/*Initialization Code*/
window.arycb_BBCodeClipboardStrings = this.clipboardStrings = [];   // Массив буфера обмена
//this.label="";
// -------------------------------------------------------
// Функция fHLD_Get_ListClipboardPrim 
// получить список сохранёного буфера обмена
//
fnHLD_Get_ListClipboardPrim = function (){
var cs = arycb_BBCodeClipboardStrings; 
return (cs.slice(0)); 
}; 

//Список сохранёного буфера обмена
//Не вызываем это, обработка по таймеру или по событию ЛКМ
//-----Обработчики буфера обмена

this.MAX_ENTRIES = 16;               //Максимальное число записей 16
this.CHECK_INTERVAL = 1000;      //Время опроса буфера 1000 миллисекунд
this.type = "menu";
this.orient = "horizontal";
this._menupopup = this.appendChild(document.createXULElement("menupopup"));
this._menupopup.setAttribute("oncommand", "this.parentNode.handleCommand(event.target);");

this.checkClipboard = function() {
    var clipStr = readFromClipboard();
    if(clipStr && this.clipboardStrings.indexOf(clipStr) == -1)
        this.storeString(clipStr);
};

this.storeString = function(str) {
    var cs = this.clipboardStrings;
    cs.push(str);
    while(cs.length > this.MAX_ENTRIES)
        cs.shift(); 

    var mi = document.createXULElement("menuitem");
    mi.setAttribute("label", str);
   

    this._menupopup.appendChild(mi);
    while(this._menupopup.childNodes.length > this.MAX_ENTRIES)
        this._menupopup.removeChild(this._menupopup.firstChild);
};

this.handleCommand = function(mi) {
    //var indx = Array.indexOf(mi.parentNode.childNodes, mi);
    var indx = Array.prototype.indexOf.call(mi.parentNode.childNodes, mi);
    if(indx != -1)
        inserter.insert(this.clipboardStrings[indx]);
};

var inserter = {
        get docShell() {
            delete this.docShell;
            return this.docShell = "docShell" in document
                && document.docShell instanceof Ci.nsIDocShell
                ? document.docShell : window.docShell;
        },
        get insertText() {
            delete this.insertText;
            return this.insertText = text => {
                if (!this.docShell.isCommandEnabled("cmd_insertText")) return;
                var params = "createCommandParams" in Components.utils
                    ? Cu.createCommandParams()
                    : Components.classes["@mozilla.org/embedcomp/command-params;1"]
                        .createInstance(Components.interfaces.nsICommandParams);
                params.setStringValue("state_data", text);
                this.docShell.doCommandWithParams("cmd_insertText", params);
            }
        },
        insert(text) {
            var br = document.activeElement;
            !br || br.localName != "browser" || !br.isRemoteBrowser
            ? this.insertText(text) : br.messageManager.loadFrameScript(
                `data:,(${this.insertText})${encodeURIComponent(text.toSource())}`
            , false, true);
        }
    };

setInterval(function(button) {
    button.checkClipboard();
}, this.CHECK_INTERVAL, this);

this.setAttribute("onpopupshowing", "this.checkClipboard();");


var ios = Components.classes["@mozilla.org/network/io-service;1"].
  getService(Components.interfaces.nsIIOService);
var sss = Components.classes["@mozilla.org/content/style-sheet-service;1"].
  getService(Components.interfaces.nsIStyleSheetService);
var css = new String();
css = css + '@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");';
css = css + 'tooltip {';
css = css + "-moz-appearance: none !important;";
css = css + "border: 1px solid black !important;";
css = css + "max-width: none !important;";
css = css + "background: #ffffe0 !important;";
css = css + "color: #8b0000 !important; !important;";
css = css + "font-family: verdana !important;";
css = css + "border-radius: 5px !important;";
css = css + "-moz-border-radius: 5px !important;";
css = css + "font-size: 14px !important;";
css = css + "padding: 4px 8px !important;";
css = css + "}";
var uss = ios.newURI("data:text/css," + encodeURIComponent(css), null, null);
if (!sss.sheetRegistered(uss, sss.AGENT_SHEET)) sss.loadAndRegisterSheet(uss, sss.AGENT_SHEET);
this.onDestroy = function(reason) {
  if (reason == "update") {
    if (sss.sheetRegistered(uss, sss.AGENT_SHEET)) sss.unregisterSheet(uss, sss.AGENT_SHEET);
  }
  if (reason == "delete") {
    if (sss.sheetRegistered(uss, sss.AGENT_SHEET)) sss.unregisterSheet(uss, sss.AGENT_SHEET);
  }
}
this.showClipboard = function() {
  var code = custombuttons.cbService.readFromClipboard();
 this.tooltipText = code ? this.label  + "\n\n" + code: this.label;
   
}
this.setAttribute("onmouseover", "this.showClipboard()");