.tabbrowser-tab:not([pinned])[fadein][label$=".pdf"] {
    min-width: 40px !important;
    max-width: 40px !important;
}

.tabbrowser-tab:not([pinned])[label$=".pdf"] .tab-content > :is(.tab-label-container,.tab-close-button:not([selected="true"])) {
    display: none !important;
}

var tabs_focus = {
    ...
    observe: function(subject, topic, pref) {
        var func_by_prefs = {
            ...
            "extensions.tabs_focus.previewmode": () => {
                var onMouseIn, onMouseOut, onMouseClicked;
                if (this.previewmode = this.Prefs.getBoolPref("previewmode")) {
                    onMouseIn = "__onMouseIn";
                    onMouseOut = "__onMouseOut";
                    onMouseClicked = "__onMouseClicked";
                } else {
                    onMouseIn = "_onMouseIn";
                    onMouseOut = "_onMouseOut";
                    onMouseClicked = "_onMouseClicked";
                }
                for (let [winInfo, obj] of objectMap) {
                    obj.onMouseIn = obj[onMouseIn];
                    obj.onMouseOut = obj[onMouseOut];
                    obj.onMouseClicked = obj[onMouseClicked];
                }
            },
            ...
        };
        ...
    },
    ...
};

Tabsfocus.prototype = {
    ...
    onMouseIn(e) {
        if (!tabs_focus.previewmode)
            this.onMouseIn = this._onMouseIn;
        else
            this.onMouseIn = this.__onMouseIn;
        this.onMouseIn(e);
    },
    ...
    onMouseOut() {
        if (!tabs_focus.previewmode)
            this.onMouseOut = this._onMouseOut;
        else
            this.onMouseOut = this.__onMouseOut;
        this.onMouseOut();
    },
    ...
    onMouseClicked(e) {
        if (!tabs_focus.previewmode)
            this.onMouseClicked = this._onMouseClicked;
        else
            this.onMouseClicked = this.__onMouseClicked;
        this.onMouseClicked(e);
    },
    ...
};

var {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
var PREF_BRANCH = "extensions.tabs_focus.", objectMap = new Map(), contExt;
var tabs_focus = {
    delay: 150,
    returndelay: 50,
    previewmode: false,
    clickreloadtab: false,
    Prefs: null,
    init: function() {
        var branch = Services.prefs.getDefaultBranch(PREF_BRANCH);
        branch.setIntPref("delay", 150);
        branch.setBoolPref("previewmode", false);
        branch.setIntPref("returndelay", 50);
        branch.setBoolPref("clickreloadtab", false);
        var Prefs = this.Prefs = Services.prefs.getBranch(PREF_BRANCH);
        var delay = Prefs.getIntPref("delay");
        if (delay < 1)
            Prefs.setIntPref("delay", (delay = 150));
        this.delay = delay;
        var returndelay = Prefs.getIntPref("returndelay");
        if (returndelay < 1)
            Prefs.setIntPref("returndelay", (returndelay = 50));
        this.returndelay = returndelay;

        // ■■■■■■■■■■■■■■■■
        //this.previewmode = Prefs.getBoolPref("previewmode");
        this.observe(null, null, PREF_BRANCH + "previewmode");

        this.clickreloadtab = Prefs.getBoolPref("clickreloadtab");
        for (let win of contExt.windowManager.getAll())
            this.loadIntoWindow(win.window, win.id);
        Services.prefs.addObserver(PREF_BRANCH, this);
    },
    loadIntoWindow: function(win, winInfo) {
        var obj = new Tabsfocus();
        obj.load(win);
        objectMap.set(winInfo, obj);
    },
    unloadFromWindow: function(winInfo) {
        objectMap.get(winInfo).unload();
        objectMap.delete(winInfo);
    },
    // ■■■■■■■■■■■■■■■■
    mouseFunctions: {
        // functions for Tabsfocus.prototype if extensions.tabs_focus.previewmode = false
        false: {
            mouseover(e) {
                var tab = e.target.closest("tab.tabbrowser-tab:not([selected='true'])");
                if (!tab) return;
                this.callback.setTarget(tab);
                this.tid.initWithCallback(this.callback, tabs_focus.delay, this.tid.TYPE_ONE_SHOT);
            },
            mouseout() {
                this.tid.cancel();
                this.callback.setTarget(null);
            },
            click(e) {
                if (tabs_focus.clickreloadtab && e.detail == 1 && e.button == 0 && !this.callback.target && (e.composedTarget || e.originalTarget || e.target).matches("tab.tabbrowser-tab :not(toolbarbutton):not(image):scope, tab.tabbrowser-tab image.tab-icon-image:scope")) {
                    if (e.shiftKey)
                        this.win.BrowserReloadSkipCache();
                    else
                        this.win.BrowserReload();
                }
                this.tid.cancel();
                this.callback.setTarget(null);
            }
        },
        // functions for Tabsfocus.prototype if extensions.tabs_focus.previewmode = true
        true: {
            mouseover(e) {
                this.previewReturnTid.cancel();
                var tab = e.target.closest("tab.tabbrowser-tab:not([selected='true'])");
                if (!tab) return;
                this.callback.setTarget(tab);
                this.tid.initWithCallback(this.callback, tabs_focus.delay, this.tid.TYPE_ONE_SHOT);
            },
            mouseout() {
                this.tid.cancel();
                this.callback.setTarget(null);
                if (!this.previewBaseTab) return;
                this.previewReturnTid.cancel();
                this.previewCallback.setTarget(this.previewBaseTab);
                this.previewReturnTid.initWithCallback(this.previewCallback, tabs_focus.returndelay, this.previewReturnTid.TYPE_ONE_SHOT);
            },
            click(e) {
                this.previewReturnTid.cancel();
                this.previewCallback.setTarget(null);
                var tab = this.win.gBrowser.selectedTab;
                if (tabs_focus.clickreloadtab && e.detail == 1 && e.button == 0 && !this.callback.target && this.previewBaseTab == tab && (e.composedTarget || e.originalTarget || e.target).matches("tab.tabbrowser-tab :not(toolbarbutton):not(image):scope, tab.tabbrowser-tab image.tab-icon-image:scope")) {
                    if (e.shiftKey)
                        this.win.BrowserReloadSkipCache();
                    else
                        this.win.BrowserReload();
                }
                this.tid.cancel();
                this.callback.setTarget(null);
                this.previewBaseTab = tab;
            }
        }
    },
    observe: function(subject, topic, pref) {
        var func_by_prefs = {
            "extensions.tabs_focus.delay": () => {
                var delay = this.Prefs.getIntPref("delay");
                if (delay < 1)
                    //this.Prefs.setIntPref("delay", (delay = 150));
                    this.Prefs.setIntPref("delay", delay = 150);
                this.delay = delay;
            },
            "extensions.tabs_focus.returndelay": () => {
                var returndelay = this.Prefs.getIntPref("returndelay");
                if (returndelay < 1)
                    //this.Prefs.setIntPref("returndelay", (returndelay = 50));
                    this.Prefs.setIntPref("returndelay", returndelay = 50);
                this.returndelay = returndelay;
            },
            // ■■■■■■■■■■■■■■■■
            /*
            "extensions.tabs_focus.previewmode": () => {
                var onMouseIn, onMouseOut, onMouseClicked;
                if (this.previewmode = this.Prefs.getBoolPref("previewmode")) {
                    onMouseIn = "__onMouseIn";
                    onMouseOut = "__onMouseOut";
                    onMouseClicked = "__onMouseClicked";
                } else {
                    onMouseIn = "_onMouseIn";
                    onMouseOut = "_onMouseOut";
                    onMouseClicked = "_onMouseClicked";
                }
                for (let [winInfo, obj] of objectMap) {
                    obj.onMouseIn = obj[onMouseIn];
                    obj.onMouseOut = obj[onMouseOut];
                    obj.onMouseClicked = obj[onMouseClicked];
                }
            },
            */
            "extensions.tabs_focus.previewmode": () => Object.assign(
                Tabsfocus.prototype,
                this.mouseFunctions[this.Prefs.getBoolPref("previewmode", false)]
            ),

            "extensions.tabs_focus.clickreloadtab": () => {
                this.clickreloadtab = this.Prefs.getBoolPref("clickreloadtab");
            }
        };
        func_by_prefs[pref]?.();
    },
    GetPref: function(name) {
        var type = Services.prefs.getPrefType(name);
        switch (type) {
            case Services.prefs.PREF_BOOL:
                return Services.prefs.getBoolPref(name);
            case Services.prefs.PREF_INT:
                return Services.prefs.getIntPref(name);
            case Services.prefs.PREF_STRING:
                return Services.prefs.getStringPref(name);
        }
    },
    SetPref: function(name, value) {
        var type = Services.prefs.getPrefType(name);
        switch (type) {
            case Services.prefs.PREF_BOOL:
                Services.prefs.setBoolPref(name, value);
                break;
            case Services.prefs.PREF_INT:
                Services.prefs.setIntPref(name, value);
                break;
            case Services.prefs.PREF_STRING:
                Services.prefs.setStringPref(name, value);
                break;
        }
    },
    uninit: function() {
        Services.prefs.removeObserver(PREF_BRANCH, this);
        for (let win of contExt.windowManager.getAll())
            this.unloadFromWindow(win.id);
    }
};

function TabfocusCallback() {
    this.win = null;
    this.target = null;
}
TabfocusCallback.prototype = {
    setTarget(target) {
        this.target = target;
    },
    setWindow(win) {
        this.win = win;
    },
    notify() {
        var target = this.target;
        if (target != null) {
            this.win.gBrowser.selectedTab = target;
            this.target = null;
        }
    },
};

function Tabsfocus() {
    this.win = null;
    this.tid = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
    this.callback = new TabfocusCallback();
    this.previewBaseTab = null;
    this.previewCallback = new TabfocusCallback();
    this.previewReturnTid = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
}

// ■■■■■■■■■■■■■■■■
/*
Tabsfocus.prototype = {
    load(win) {
        this.win = win;
        this.callback.setWindow(win);
        this.previewCallback.setWindow(win);
        var gBrowser = win.gBrowser;
        this.previewBaseTab = gBrowser.selectedTab;
        this.onMouseIn_ = this.onMouseIn.bind(this);
        var slot = this.slot = gBrowser.tabs[0].flattenedTreeParentNode;
        slot.addEventListener("mouseover", this.onMouseIn_);
        this.onMouseOut_ = this.onMouseOut.bind(this);
        slot.addEventListener("mouseout", this.onMouseOut_);
        this.onMouseClicked_ = this.onMouseClicked.bind(this);
        slot.addEventListener("click", this.onMouseClicked_);
    },
    unload() {
        var slot = this.slot;
        slot.removeEventListener("mouseover", this.onMouseIn_);
        slot.removeEventListener("mouseout", this.onMouseOut_);
        slot.removeEventListener("click", this.onMouseClicked_);
    },
    onMouseIn(e) {
        Cu.reportError("onMouseIn_ORIGINAL\n" + this.onMouseIn);
        if (!tabs_focus.previewmode)
            this.onMouseIn = this._onMouseIn;
        else
            this.onMouseIn = this.__onMouseIn;
        this.onMouseIn(e);
    },
    _onMouseIn(e) {
        var tab = e.target.closest("tab.tabbrowser-tab:not([selected='true'])");
        if (!tab) return;
        this.callback.setTarget(tab);
        this.tid.initWithCallback(this.callback, tabs_focus.delay, this.tid.TYPE_ONE_SHOT);
    },
    __onMouseIn(e) {
        this.previewReturnTid.cancel();
        var tab = e.target.closest("tab.tabbrowser-tab:not([selected='true'])");
        if (!tab) return;
        this.callback.setTarget(tab);
        this.tid.initWithCallback(this.callback, tabs_focus.delay, this.tid.TYPE_ONE_SHOT);
    },
    onMouseOut() {
        if (!tabs_focus.previewmode)
            this.onMouseOut = this._onMouseOut;
        else
            this.onMouseOut = this.__onMouseOut;
        this.onMouseOut();
    },
    _onMouseOut() {
        this.tid.cancel();
        this.callback.setTarget(null);
    },
    __onMouseOut() {
        this.tid.cancel();
        this.callback.setTarget(null);
        if (!this.previewBaseTab) return;
        this.previewReturnTid.cancel();
        this.previewCallback.setTarget(this.previewBaseTab);
        this.previewReturnTid.initWithCallback(this.previewCallback, tabs_focus.returndelay, this.previewReturnTid.TYPE_ONE_SHOT);
    },
    onMouseClicked(e) {
        if (!tabs_focus.previewmode)
            this.onMouseClicked = this._onMouseClicked;
        else
            this.onMouseClicked = this.__onMouseClicked;
        this.onMouseClicked(e);
    },
    _onMouseClicked(e) {
        if (tabs_focus.clickreloadtab && e.detail == 1 && e.button == 0 && !this.callback.target && (e.composedTarget || e.originalTarget || e.target).matches("tab.tabbrowser-tab :not(toolbarbutton):not(image):scope, tab.tabbrowser-tab image.tab-icon-image:scope")) {
            if (!e.shiftKey)
                this.win.BrowserReload();
            else
                this.win.BrowserReloadSkipCache();
        }
        this.tid.cancel();
        this.callback.setTarget(null);
    },
    __onMouseClicked(e) {
        this.previewReturnTid.cancel();
        this.previewCallback.setTarget(null);
        var tab = this.win.gBrowser.selectedTab;
        if (tabs_focus.clickreloadtab && e.detail == 1 && e.button == 0 && !this.callback.target && this.previewBaseTab == tab && (e.composedTarget || e.originalTarget || e.target).matches("tab.tabbrowser-tab :not(toolbarbutton):not(image):scope, tab.tabbrowser-tab image.tab-icon-image:scope")) {
            if (!e.shiftKey)
                this.win.BrowserReload();
            else
                this.win.BrowserReloadSkipCache();
        }
        this.tid.cancel();
        this.callback.setTarget(null);
        this.previewBaseTab = tab;
    },
};
*/
Tabsfocus.prototype = {
    events: ["mouseover", "mouseout", "click"],
    load(win) {
        this.callback.setWindow(this.win = win);
        this.previewCallback.setWindow(win);
        this.previewBaseTab = win.gBrowser.selectedTab;
        var slot = this.slot = win.gBrowser.tabs[0].flattenedTreeParentNode;

        for(var type of this.events)
            slot.addEventListener(type, this);
    },
    unload() {
        for(var type of this.events)
            this.slot.removeEventListener(type, this);
    },
    handleEvent(e) {
        this[e.type](e);
    }
};

this.TabsFocus = class extends ExtensionAPI {
    onShutdown(reason) {
        if (reason != "APP_SHUTDOWN")
            tabs_focus.uninit();
    }
    getAPI(context) {
        contExt = context.extension;
        return {
            TabsFocus: {
                initExt() {
                    tabs_focus.init();
                },
                loadWin(winInfo) {
                    tabs_focus.loadIntoWindow(contExt.windowManager.get(winInfo).window, winInfo);
                },
                unloadWin(winInfo) {
                    tabs_focus.unloadFromWindow(winInfo);
                },
                getPref(arr) {
                    return arr.map(name => [name, tabs_focus.GetPref(name)]);
                },
                setPref(arr) {
                    arr.forEach(nv => {
                        tabs_focus.SetPref(nv[0], nv[1]);
                    });
                }
            }
        };
    }
};

var {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
var PREF_BRANCH = "extensions.tabs_focus.", objectMap = new Map(), contExt;
var tabs_focus = {
    delay: 150,
    returndelay: 50,
    previewmode: false,
    clickreloadtab: false,
    Prefs: null,
    init: function() {
        var branch = Services.prefs.getDefaultBranch(PREF_BRANCH);
        branch.setIntPref("delay", 150);
        branch.setBoolPref("previewmode", false);
        branch.setIntPref("returndelay", 50);
        branch.setBoolPref("clickreloadtab", false);
        var Prefs = this.Prefs = Services.prefs.getBranch(PREF_BRANCH);
        var delay = Prefs.getIntPref("delay");
        if (delay < 1)
            Prefs.setIntPref("delay", (delay = 150));
        this.delay = delay;
        var returndelay = Prefs.getIntPref("returndelay");
        if (returndelay < 1)
            Prefs.setIntPref("returndelay", (returndelay = 50));
        this.returndelay = returndelay;
        this.previewmode = Prefs.getBoolPref("previewmode");
        this.clickreloadtab = Prefs.getBoolPref("clickreloadtab");
        for (let win of contExt.windowManager.getAll())
            this.loadIntoWindow(win.window, win.id);
        Services.prefs.addObserver(PREF_BRANCH, this);
    },
    loadIntoWindow: function(win, winInfo) {
        var obj = new Tabsfocus();
        obj.load(win);
        objectMap.set(winInfo, obj);
    },
    unloadFromWindow: function(winInfo) {
        objectMap.get(winInfo).unload();
        objectMap.delete(winInfo);
    },
    observe: function(subject, topic, pref) {
        ({
            "extensions.tabs_focus.delay": () => {
                var delay = this.Prefs.getIntPref("delay");
                if (delay < 1)
                    this.Prefs.setIntPref("delay", (delay = 150));
                this.delay = delay;
            },
            "extensions.tabs_focus.returndelay": () => {
                var returndelay = this.Prefs.getIntPref("returndelay");
                if (returndelay < 1)
                    this.Prefs.setIntPref("returndelay", (returndelay = 50));
                this.returndelay = returndelay;
            },
            "extensions.tabs_focus.previewmode": () => {
                var onMouseIn, onMouseOut, onMouseClicked;
                if (this.previewmode = this.Prefs.getBoolPref("previewmode")) {
                    onMouseIn = "__onMouseIn";
                    onMouseOut = "__onMouseOut";
                    onMouseClicked = "__onMouseClicked";
                } else {
                    onMouseIn = "_onMouseIn";
                    onMouseOut = "_onMouseOut";
                    onMouseClicked = "_onMouseClicked";
                }
                for (let [winInfo, obj] of objectMap) {
                    obj.unload();
                    obj.onMouseIn = obj[onMouseIn];
                    obj.onMouseOut = obj[onMouseOut];
                    obj.onMouseClicked = obj[onMouseClicked];
                    obj.loadListeners();
                }
            },
            "extensions.tabs_focus.clickreloadtab": () => {
                this.clickreloadtab = this.Prefs.getBoolPref("clickreloadtab");
            }
        })[pref]?.();
    },
    GetPref: function(name) {
        var type = Services.prefs.getPrefType(name);
        switch (type) {
            case Services.prefs.PREF_BOOL:
                return Services.prefs.getBoolPref(name);
            case Services.prefs.PREF_INT:
                return Services.prefs.getIntPref(name);
            case Services.prefs.PREF_STRING:
                return Services.prefs.getStringPref(name);
        }
    },
    SetPref: function(name, value) {
        var type = Services.prefs.getPrefType(name);
        switch (type) {
            case Services.prefs.PREF_BOOL:
                Services.prefs.setBoolPref(name, value);
                break;
            case Services.prefs.PREF_INT:
                Services.prefs.setIntPref(name, value);
                break;
            case Services.prefs.PREF_STRING:
                Services.prefs.setStringPref(name, value);
                break;
        }
    },
    uninit: function() {
        Services.prefs.removeObserver(PREF_BRANCH, this);
        for (let win of contExt.windowManager.getAll())
            this.unloadFromWindow(win.id);
    }
};

function TabfocusCallback() {
    this.win = null;
    this.target = null;
}
TabfocusCallback.prototype = {
    setTarget(target) {
        this.target = target;
    },
    setWindow(win) {
        this.win = win;
    },
    notify() {
        var target = this.target;
        if (target != null) {
            this.win.gBrowser.selectedTab = target;
            this.target = null;
        }
    },
};

function Tabsfocus() {
    this.win = null;
    this.tid = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
    this.callback = new TabfocusCallback();
    this.previewBaseTab = null;
    this.previewCallback = new TabfocusCallback();
    this.previewReturnTid = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
}
Tabsfocus.prototype = {
    load(win) {
        this.win = win;
        this.callback.setWindow(win);
        this.previewCallback.setWindow(win);
        var gBrowser = win.gBrowser;
        this.previewBaseTab = gBrowser.selectedTab;
        if (!tabs_focus.previewmode) {
            this.onMouseIn = this._onMouseIn;
            this.onMouseOut = this._onMouseOut;
            this.onMouseClicked = this._onMouseClicked;
        } else {
            this.onMouseIn = this.__onMouseIn;
            this.onMouseOut = this.__onMouseOut;
            this.onMouseClicked = this.__onMouseClicked;
        }
        this.slot = gBrowser.tabs[0].flattenedTreeParentNode;
        this.loadListeners();
    },
    loadListeners() {
        var slot = this.slot;
        this.onMouseIn_ = this.onMouseIn.bind(this);
        slot.addEventListener("mouseover", this.onMouseIn_);
        this.onMouseOut_ = this.onMouseOut.bind(this);
        slot.addEventListener("mouseout", this.onMouseOut_);
        this.onMouseClicked_ = this.onMouseClicked.bind(this);
        slot.addEventListener("click", this.onMouseClicked_);
    },
    unload() {
        var slot = this.slot;
        slot.removeEventListener("mouseover", this.onMouseIn_);
        slot.removeEventListener("mouseout", this.onMouseOut_);
        slot.removeEventListener("click", this.onMouseClicked_);
    },
    _onMouseIn(e) {console.log("_onMouseIn\n" + this.onMouseIn);
        var tab = e.target.closest("tab.tabbrowser-tab:not([selected='true'])");
        if (!tab) return;
        this.callback.setTarget(tab);
        this.tid.initWithCallback(this.callback, tabs_focus.delay, this.tid.TYPE_ONE_SHOT);
    },
    __onMouseIn(e) {console.log("__onMouseIn\n" + this.onMouseIn);
        this.previewReturnTid.cancel();
        var tab = e.target.closest("tab.tabbrowser-tab:not([selected='true'])");
        if (!tab) return;
        this.callback.setTarget(tab);
        this.tid.initWithCallback(this.callback, tabs_focus.delay, this.tid.TYPE_ONE_SHOT);
    },
    _onMouseOut() {console.log("_onMouseOut\n" + this.onMouseOut);
        this.tid.cancel();
        this.callback.setTarget(null);
    },
    __onMouseOut() {console.log("__onMouseOut\n" + this.onMouseOut);
        this.tid.cancel();
        this.callback.setTarget(null);
        if (!this.previewBaseTab) return;
        this.previewReturnTid.cancel();
        this.previewCallback.setTarget(this.previewBaseTab);
        this.previewReturnTid.initWithCallback(this.previewCallback, tabs_focus.returndelay, this.previewReturnTid.TYPE_ONE_SHOT);
    },
    _onMouseClicked(e) {console.log("_onMouseClicked\n" + this.onMouseClicked);
        if (tabs_focus.clickreloadtab && e.detail == 1 && e.button == 0 && !this.callback.target && (e.composedTarget || e.originalTarget || e.target).matches("tab.tabbrowser-tab :not(toolbarbutton):not(image):scope, tab.tabbrowser-tab image.tab-icon-image:scope")) {
            if (!e.shiftKey)
                this.win.BrowserReload();
            else
                this.win.BrowserReloadSkipCache();
        }
        this.tid.cancel();
        this.callback.setTarget(null);
    },
    __onMouseClicked(e) {console.log("__onMouseClicked\n" + this.onMouseClicked);
        this.previewReturnTid.cancel();
        this.previewCallback.setTarget(null);
        var tab = this.win.gBrowser.selectedTab;
        if (tabs_focus.clickreloadtab && e.detail == 1 && e.button == 0 && !this.callback.target && this.previewBaseTab == tab && (e.composedTarget || e.originalTarget || e.target).matches("tab.tabbrowser-tab :not(toolbarbutton):not(image):scope, tab.tabbrowser-tab image.tab-icon-image:scope")) {
            if (!e.shiftKey)
                this.win.BrowserReload();
            else
                this.win.BrowserReloadSkipCache();
        }
        this.tid.cancel();
        this.callback.setTarget(null);
        this.previewBaseTab = tab;
    },
};

this.TabsFocus = class extends ExtensionAPI {
    onShutdown(reason) {
        if (reason != "APP_SHUTDOWN")
            tabs_focus.uninit();
    }
    getAPI(context) {
        contExt = context.extension;
        return {
            TabsFocus: {
                initExt() {
                    tabs_focus.init();
                },
                loadWin(winInfo) {
                    tabs_focus.loadIntoWindow(contExt.windowManager.get(winInfo).window, winInfo);
                },
                unloadWin(winInfo) {
                    tabs_focus.unloadFromWindow(winInfo);
                },
                getPref(arr) {
                    return arr.map(name => [name, tabs_focus.GetPref(name)]);
                },
                setPref(arr) {
                    arr.forEach(nv => {
                        tabs_focus.SetPref(nv[0], nv[1]);
                    });
                }
            }
        };
    }
};

#BMB_bookmarksPopup menupopup[placespopup="true"] {
    padding-inline-start: 6px !important;
}