try {(() => {
    var label = "Sidebar Tabs",
    tooltiptext = "ЛКМ              Sidebar Tabs\nShift+ЛКМ   Toggle AutoHide",
    img = "data:image/svg+xml;base64...",
    pref = "extensions.ucf.sidebar_tabs.auto_hide";

    var sidebar_tabs_button = {
        get style() {
            delete this.style;
            return this.style = "data:text/css;charset=utf-8," + encodeURIComponent(`
            #st_toolbox {
                --v-sidebar-min-width: 2px;
                --v-sidebar-min-width-normal: 10px;
                --v-sidebar-max-width: 20em;
                --v-sidebar-transition-delay-show: .3s;
                --v-sidebar-transition-delay-hide: .6s;
                --v-sidebar-transition-duration: .3s;
                /* ********************************************** */

                position: relative !important;
                z-index: 1 !important;
                min-width: var(--v-sidebar-max-width) !important;
                width: var(--v-sidebar-max-width) !important;
                max-width: var(--v-sidebar-max-width) !important;
                overflow: hidden !important;
                opacity: 0 !important;
                --v-sidebar-margin-max-width: calc(-1 * var(--v-sidebar-max-width));
                --v-sidebar-margin-left-locale-dir: 0;
                --v-sidebar-margin-right-locale-dir: var(--v-sidebar-margin-max-width);
                --v-sidebar-transform-locale-dir: -1;
                --v-sidebar-transform-locale-dir-visible: 1;
                margin-left: var(--v-sidebar-margin-left-locale-dir) !important;
                margin-right: var(--v-sidebar-margin-right-locale-dir) !important;
                transform: translateX(calc(var(--v-sidebar-transform-locale-dir) * (var(--v-sidebar-max-width) - var(--v-sidebar-min-width)))) !important;
                transition-timing-function: linear, step-start !important;
                transition-delay: var(--v-sidebar-transition-delay-hide), calc(var(--v-sidebar-transition-delay-hide) + var(--v-sidebar-transition-duration)) !important;
                transition-duration: var(--v-sidebar-transition-duration), 0s !important;
                transition-property: transform, opacity !important;
                border-inline-end: 1px solid var(--chrome-content-separator-color, rgba(127,127,127,.5)) !important;
            }

            *|*:root[sidebar_tabs_right="true"] #st_toolbox {
                border-inline-start: 1px solid var(--chrome-content-separator-color, rgba(127,127,127,.5)) !important;
                border-inline-end: none !important;
            }

            *|*:root[sidebar_tabs_right="true"] #st_toolbox,
            #st_toolbox:-moz-locale-dir(rtl) {
                --v-sidebar-margin-left-locale-dir: var(--v-sidebar-margin-max-width);
                --v-sidebar-margin-right-locale-dir: 0;
                --v-sidebar-transform-locale-dir: 1;
                --v-sidebar-transform-locale-dir-visible: -1;
            }

            *|*:root[sidebar_tabs_right="true"] #st_toolbox:-moz-locale-dir(rtl) {
                --v-sidebar-margin-left-locale-dir: 0;
                --v-sidebar-margin-right-locale-dir: var(--v-sidebar-margin-max-width);
                --v-sidebar-transform-locale-dir: -1;
                --v-sidebar-transform-locale-dir-visible: 1;
            }

            *|*:root[sizemode="normal"] #st_toolbox {
                --v-sidebar-min-width: var(--v-sidebar-min-width-normal) !important;
            }

            #st_toolbox:hover,
            #st_toolbox[sidebardrag] {
                transform: translateX(0px) !important;
                opacity: 1 !important;
                transition-delay: var(--v-sidebar-transition-delay-show) !important;
            }

            *|*:root[v_vertical_bar_visible][v_vertical_bar_start="true"][sidebar_tabs_right="false"] #st_toolbox,
            *|*:root[v_vertical_bar_visible][v_vertical_bar_start="false"][sidebar_tabs_right="true"] #st_toolbox {
                transform: translateX(calc(var(--v-sidebar-transform-locale-dir-visible) * var(--v-vertical_bar_width, 0px))) !important;
                opacity: 1 !important;
                transition-delay: 0s !important;
            }

            #browser > #st_splitter {
                display: none !important;
            }
            `);
        },
        loadstyle(win) {
            try {
                win.windowUtils.loadSheetUsingURIString(this.style, win.windowUtils.USER_SHEET);
            } catch (e) {}
        },
        removestyle(win) {
            try {
                win.windowUtils.removeSheetUsingURIString(this.style, win.windowUtils.USER_SHEET);
            } catch (e) {}
        },
    };
    CustomizableUI.createWidget({
        id: "sidebar_tabs_button",
        label: label,
        tooltiptext: tooltiptext,
        defaultArea: CustomizableUI.AREA_NAVBAR,
        localized: false,
        onBeforeCreated(doc) {
            if (Services.prefs.getBoolPref(pref, true))
                sidebar_tabs_button.loadstyle(doc.defaultView);
        },
        onCreated: function(btn) {
            btn.style.setProperty("list-style-image", `url("${img}")`);
        },
        onCommand: function(e) {
            if (!e.shiftKey)
                e.target.sidebar_tabs_toggle();
            else {
                let prf = Services.prefs.getBoolPref(pref, true),
                loadremove = !prf ? "loadstyle" : "removestyle";
                Services.prefs.setBoolPref(pref, !prf);
                for (let win of CustomizableUI.windows)
                    sidebar_tabs_button[loadremove](win);
            }
        }
    });
})();} catch(e) {}

(async (
    id = "ucf_sidebar_tabs_button",
    label = "Sidebar Tabs",
    tooltiptext = "ЛКМ: Открыть / Закрыть\nControl + ЛКМ: Отключить / Включить\nСКМ: Отключить / Включить\nПКМ: Переключить AutoHide",
    img = "resource://ucf_sidebar_tabs",
    pref = "extensions.ucf.sidebar_tabs.auto_hide",

    sidebar_tabs = {
        get style() {
            delete this.style;
            return this.style = `data:text/css;charset=utf-8,${encodeURIComponent(`
            #browser > #st_toolbox {
                --v-sidebar-min-width: 10px;
                --v-sidebar-transition-delay-show: .3s;
                --v-sidebar-transition-delay-hide: 2s;
                --v-sidebar-transition-duration: .2s;
                /* ********************************************** */

                position: relative !important;
                z-index: calc(var(--browser-area-z-index-tabbox, 2) + 2) !important;
                min-width: var(--v-sidebar-tabs-width) !important;
                width: var(--v-sidebar-tabs-width) !important;
                max-width: var(--v-sidebar-tabs-width) !important;
                overflow: hidden !important;
                opacity: 0 !important;
                --v-sidebar-margin-max-width: calc(-1 * var(--v-sidebar-tabs-width));
                --v-sidebar-transform-locale-dir: -1;
                --v-sidebar-transform-locale-dir-visible: 1;
                margin-inline-start: 0 !important;
                margin-inline-end: var(--v-sidebar-margin-max-width) !important;
                transform: translateX(calc(var(--v-sidebar-transform-locale-dir) * (var(--v-sidebar-tabs-width) - var(--v-sidebar-min-width)))) !important;
                &[sidebar_tabs_auto_hide] {
                    transition-timing-function: linear, step-start, linear !important;
                    transition-delay: var(--v-sidebar-transition-delay-hide), calc(var(--v-sidebar-transition-delay-hide) + var(--v-sidebar-transition-duration)), 0s !important;
                    transition-duration: var(--v-sidebar-transition-duration), 0s, .2s !important;
                    transition-property: transform, opacity, margin-top !important;
                }
                &[sidebar_tabs_auto_hide][sidebar_tabs_visible="hidden"] {
                    transition-delay: 0s, var(--v-sidebar-transition-duration), 0s !important;
                }
                :root[sidebar_tabs_start="false"] & {
                    margin-inline-start: var(--v-sidebar-margin-max-width) !important;
                    margin-inline-end: 0 !important;
                }
                :root[sidebar_tabs_start="false"]:-moz-locale-dir(ltr) &,
                :root[sidebar_tabs_start="true"]:-moz-locale-dir(rtl) & {
                    --v-sidebar-transform-locale-dir: 1;
                    --v-sidebar-transform-locale-dir-visible: -1;
                }
                &[sidebar_tabs_auto_hide]:hover {
                    transform: translateX(0px) !important;
                    opacity: 1 !important;
                    transition-delay: var(--v-sidebar-transition-delay-show), var(--v-sidebar-transition-delay-show), 0s !important;
                }
                &[sidebar_tabs_auto_hide][sidebar_tabs_visible^="visible"] {
                    transform: translateX(0px) !important;
                    opacity: 1 !important;
                    transition-delay: 0s !important;
                }
                :root[v_vertical_bar_start="true"][sidebar_tabs_start="true"]:is([v_vertical_bar_visible="visible"],[v_vertical_bar_sidebar="true"]) &[sidebar_tabs_auto_hide],
                :root[v_vertical_bar_start="false"][sidebar_tabs_start="false"]:is([v_vertical_bar_visible="visible"],[v_vertical_bar_sidebar="true"]) &[sidebar_tabs_auto_hide] {
                    transform: translateX(calc(var(--v-sidebar-transform-locale-dir-visible) * var(--v-vertical-bar-width, 0px))) !important;
                    opacity: 1 !important;
                    transition-delay: 0s !important;
                }
                :root[v_vertical_bar_visible] & {
                    padding-inline: 0 !important;
                }
            }
            #browser > #st_splitter {
                display: none !important;
            }
        `)}`;
        },
        async loadstyle(win) {
            win.windowUtils.loadSheetUsingURIString(this.style, win.windowUtils.USER_SHEET);
            win.setTimeout(() => win.ucf_custom_scripts_win.ucf_sidebar_tabs.toolbox.setAttribute("sidebar_tabs_auto_hide", "true"), 0);
        },
        async removestyle(win) {
            win.windowUtils.removeSheetUsingURIString(this.style, win.windowUtils.USER_SHEET);
            win.ucf_custom_scripts_win.ucf_sidebar_tabs.toolbox.removeAttribute("sidebar_tabs_auto_hide");
        },
        showHide(win) {
            var st = win.ucf_custom_scripts_win.ucf_sidebar_tabs;
            if (!st.toolbox.hasAttribute("sidebar_tabs_auto_hide")) {
                st.toggle();
                return;
            }
            st.st_vbox_container ||= st.toolbox;
            if (!st._open && st._visible) {
                st.isPanel = false;
                st.hideToolbar(true);
            }
            st.showHide();
            if (!st._visible)
                win.setTimeout(() => st.toolbox.removeAttribute("sidebar_tabs_visible"), 0);
        },
    },
) => CustomizableUI.createWidget({
    id,
    label,
    tooltiptext,
    defaultArea: CustomizableUI.AREA_NAVBAR,
    localized: false,
    onBeforeCreated_(doc) {
        if (Services.prefs.getBoolPref(pref, true))
            sidebar_tabs.loadstyle(doc.defaultView);
    },
    onBeforeCreated(doc) {
        this.onBeforeCreated = this.onBeforeCreated_;
        this.onBeforeCreated_(doc);
        CustomizableUI.destroyWidget("ucf_sidebar_tabs");
    },
    onCreated(btn) {
        btn.style.setProperty("list-style-image", `url("${img}")`);
        btn.setAttribute("context", "");
        var st = btn.ownerGlobal.ucf_custom_scripts_win.ucf_sidebar_tabs;
        btn.checked = st._open;
        st.button = btn;
        var func = st.mouseup.toString();
        Services.scriptloader.loadSubScript(`data:charset=utf-8,${encodeURIComponent(`this.mouseup = ${func.replace(/^(async\s)?.*?\(/, '$1function mouseup(')
            .replace(/\}$/g, 'setTimeout(() => this.toolbox.removeAttribute("sidebar_tabs_visible"), 0);}')}`)}`, st);
    },
    onClick(e) {
        switch (e.button) {
            case 0:
                if (!e.getModifierState("Control"))
                    sidebar_tabs.showHide(e.view);
                else
                    e.view.ucf_custom_scripts_win.ucf_sidebar_tabs.toggle();
                break;
            case 1:
                e.view.ucf_custom_scripts_win.ucf_sidebar_tabs.toggle();
                break;
            case 2:
                let prf = Services.prefs.getBoolPref(pref, true),
                loadremove = !prf ? "loadstyle" : "removestyle";
                Services.prefs.setBoolPref(pref, !prf);
                for (let win of CustomizableUI.windows)
                    sidebar_tabs[loadremove](win);
                break;
        }
    },
}))();

(async sel => {
	var sep = document.querySelector(sel);
	if (!sep) return;

	var popup = sep.parentNode;
	var menuitem = document.createXULElement("menuitem");
	for(var args of Object.entries({
		"node-type": "link",
		"selection-type": "single",
		label: "Открыть в Sidebar Tabs",
		id: "placesContext_open:sidebartabs",
	}))
		menuitem.setAttribute(...args);

	menuitem.addEventListener("command", () => {
		var {uri} = popup.triggerNode._placesNode || popup._view.selectedNode;
		Services.wm.getMostRecentBrowserWindow()
			.ucf_custom_script_win.ucf_sidebar_tabs.setPanel(4, uri);
	});
	sep.before(menuitem);
})("menupopup#placesContext > #placesContext_openSeparator");