/* Код Vitaliy V. */
#TabsToolbar .tabbrowser-tab .tab-content .tab-label-container::before {
    content: "Соединение…" !important;
    display: -moz-box !important;
    visibility: collapse !important;
    font-size: inherit !important;
    font-weight: inherit !important;
    white-space: nowrap !important;
    line-height: 1.7em !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    pointer-events: none !important;
    color: inherit !important;
    text-shadow: inherit !important;
}
#TabsToolbar .tabbrowser-tab[busy="true"]:not([progress="true"]) .tab-content .tab-label-container::before {
    visibility: visible !important;
}
#TabsToolbar .tabbrowser-tab[busy="true"]:not([progress="true"]) .tab-content .tab-text.tab-label {
    visibility: collapse !important;
}

/* Код Vitaliy V. */
#TabsToolbar .tabbrowser-tab .tab-content .tab-label-container::before {
    content: "" !important;
    display: -moz-box !important;
    visibility: collapse !important;
    font-size: inherit !important;
    font-weight: inherit !important;
    white-space: nowrap !important;
    line-height: 1.7em !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    pointer-events: none !important;
    color: inherit !important;
    text-shadow: inherit !important;
}
#TabsToolbar .tabbrowser-tab[busy="true"]:not([progress="true"]) .tab-content .tab-label-container::before {
    content: "Соединение…" !important;
    visibility: visible !important;
}
#TabsToolbar .tabbrowser-tab[progress="true"] .tab-content .tab-label-container::before {
    content: "Соединение…" !important;
    visibility: visible !important;
}
#TabsToolbar .tabbrowser-tab:-moz-any([busy="true"],[progress="true"]) .tab-content .tab-text.tab-label {
    visibility: collapse !important;
}

var ddMenu =
'<menupopup xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"\n\
       oncommand="this.parentNode.setDocEncoding(event)">\n\
    <menuitem type="radio" charset="KOI8-R" label="Кириллица (KOI8-R)"/>\n\
    <menuitem type="radio" charset="windows-1251" label="Кириллица (Windows-1251)"/>\n\
    <menuitem type="radio" charset="UTF-8" label="Unicode (UTF-8)"/>\n\
</menupopup>';
ddMenu = new DOMParser().parseFromString(ddMenu,"application/xml").documentElement;
this.type = "menu"; this.orient = "horizontal";
document.getAnonymousElementByAttribute(this, "class", "toolbarbutton-menu-dropmarker").hidden = true;
this.appendChild(ddMenu);
this.setDocEncoding = function(evt) {
    var _charset = evt.target.getAttribute("charset");
    try { SetForcedCharset(_charset);
    } catch(e) { BrowserSetForcedCharacterSet(_charset);
    }
}
getDocEncoding = function() {
    var docCharset = getBrowser().docShell.QueryInterface(Components.interfaces.nsIDocCharset);
    var curChar = docCharset.charset;
    switch (curChar) {
        case "KOI8-R": ddMenu.childNodes[1].setAttribute("checked", "true"); break;
        case "windows-1251": ddMenu.childNodes[3].setAttribute("checked", "true"); break;
        case "IBM866": ddMenu.childNodes[5].setAttribute("checked", "true"); break;
        case "UTF-8": ddMenu.childNodes[7].setAttribute("checked", "true"); break;
        default: ddMenu.childNodes[1].removeAttribute("checked"); ddMenu.childNodes[3].removeAttribute("checked"); ddMenu.childNodes[5].removeAttribute("checked"); ddMenu.childNodes[7].removeAttribute("checked");
    }
}
this.setAttribute('onclick', "getDocEncoding();");

(blurTab => {
    var find = (t, key = "previousSibling") => {
        while((t = t[key])) if (!t.hidden && !t.closing) return t;
    }
    gBrowser._blurTab = tab => {
        if (!tab.selected) return;
        var tabToSelect = find(tab) || find(tab, "nextSibling");
        if (tabToSelect) gBrowser.selectedTab = tabToSelect;
        else blurTab.call(gBrowser, tab);
    }
    addDestructor(() => gBrowser._blurTab = blurTab);
})(gBrowser._blurTab);

addEventListener("popupshowing", {
    handleEvent(e) {
        if (e.originalTarget != this.popup) return;
        removeEventListener("popupshowing", this, false, gURLBar);

        var sep = this.append("menuseparator", this.popup);
        var menu = this.append("menu", this.popup, {label: "Вставить ^ * + % ~ # @"});
        var popup = this.append("menupopup", menu, {oncommand: "insert(event);"});
        addDestructor(() => sep.remove(menu.remove()));

        this.handleEvent = e => {
            removeEventListener("popupshowing", this, false, popup);
            var df = document.createDocumentFragment();
            for(var label of [
                "^ История",
                "* Закладки",
                "+ Страницы с метками",
                "% Текущие открытые вкладки",
                "~ Набранные",
                "# Названия",
                "@ Веб-адреса (URLs)"
            ])
                this.append("menuitem", df, {label});
            popup.append(df);

            popup.insert = e => {
                var str = e.target.label[0] + " ";
                var val = gURLBar.value;
                if (val && !val.endsWith(" ")) str = " " + str;
                gURLBar.editor.endOfDocument();
                gURLBar.editor.insertText(str);
            }
        }
        addEventListener("popupshowing", this, false, popup);
    },
    get popup() {
        delete this.popup;
        return this.popup = gURLBar.inputField.parentNode.menupopup;
    },
    append(name, parent, attrs) {
        var elm = document.createElement(name);
        if (attrs) for(var a in attrs) elm.setAttribute(a, attrs[a]);
        return parent.appendChild(elm);
    }
}, false, gURLBar);