(async self => CustomizableUI.createWidget(self = {
	label: "AkelPad",
	tooltiptext: "ЛКМ: AkelPad\nПКМ: AkelPad + вставка из буфера",
	akelpadPath: "C:\\Program Files\\AkelPad\\AkelPad.exe",
	image: "data:image/x-icon;base64,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",

	id: "ucf-AkelPad",
	localized: false,
	onCreated(btn) {
		btn.setAttribute("image", this.image);
		btn._handleClick = btn.oncontextmenu = this.akelpad;
	},
	akelpad(e) {
		if (e && (e.ctrlKey || e.shiftKey)) return;

		var akelpad = Components.Constructor(
			"@mozilla.org/file/local;1", "nsIFile", "initWithPath"
		)(self.akelpadPath);

		if (!e) return akelpad.launch();

		e.preventDefault();

		var process = Cc["@mozilla.org/process/util;1"].createInstance(Ci.nsIProcess);
		process.init(akelpad);
		var args = [
			//"/NewInstance",	// Форсировать создание нового экземпляра программы
			//"/Command(4157)",	// Выделить всё
			"/Command(4155)",	// Вставить
		];
		process.runwAsync(args, args.length);
	}
}))();

(async (url, pa = ChromeUtils.import(url).PageActions) => pa.addAction(new pa.Action({

	title: "Копировать ссылку",
	tooltip: "Копировать ссылку",
	iconURL: "chrome://browser/skin/link.svg",

	id: "ucf-copyURL",
	pinnedToUrlbar: true,		
	onCommand(e) {
		var gBrowserBundle = {
			GetStringFromName: () => "Скопировано в буфер обмена!"
		};
		var show = eval(`(function ${e.view.ConfirmationHint.show})`);
		var helper = Cc["@mozilla.org/widget/clipboardhelper;1"]
			.getService(Ci.nsIClipboardHelper);

		(this.onCommand = e => {
			var win = e.view;
			var uri = win.gBrowser.selectedBrowser.currentURI;
			helper.copyString(win.gURLBar.makeURIReadable(uri).displaySpec);

			var anchor = win.BrowserPageActions.panelAnchorNodeForAction(this, e);
			show.call(win.ConfirmationHint, anchor, "", {event: e, hideArrow: true});
		})(e);
	},
	onPlacedInUrlbar: node => node.style.setProperty("--urlbar-icon-fill-opacity", ".6", "important")
})))("resource:///modules/PageActions.jsm");

(async (sel, self) => ({

	icon: "circle",
	colors: [
		"#FF9800",
		"#03A9F4",
		"#FFC107",
		"#00BCD4",
		"#FFEB3B",
		"#009688",
		"#CDDC39",
		"#4CAF50",
		"#8BC34A",
		"#D32F2F",
		"#4949ff",
		"#C2185B",
		"#607D8B",
		"#7B1FA2",
		"#9E9E9E",
		"#673AB7",
		"#795548",
		"#3F51B5",
		"#FF5722",
		"#2196F3",
	],

	initColors() {
		var colorName = "ucf-gen";
		var css = "@-moz-document url(about:preferences#containers),"
			+ " url-prefix(chrome://browser/content/browser.x) {\n";
		this.colors.forEach((color, ind) => {
			var [ic, tc] = color.split(/\s*\|\s*/);
			css += `\t.identity-color-${colorName}${ind} {\n`
				+ `\t\t--identity-tab-color: ${tc || ic};\n`
				+ `\t\t--identity-icon-color: ${ic};\n\t}\n`
		});
		var url = "data:text/css;charset=utf-8," + encodeURIComponent(css + "}");
		var sss = Cc["@mozilla.org/content/style-sheet-service;1"]
			.getService(Ci.nsIStyleSheetService);
		sss.loadAndRegisterSheet(Services.io.newURI(url), sss.USER_SHEET);

		var len = this.colors.length;
		var pref = "ucf.openInGeneratedContainer.lastColor";
		var ind = Math.min(Services.prefs.getIntPref(pref, -1), len - 1);
		this.nextColor = () => {
			var next = ind + 1;
			Services.prefs.setIntPref(pref, ind = next == len ? 0 : next);
			return colorName + ind;
		}
	},
	quit: false,
	init(topic) {
		Services.obs.addObserver(self = this, topic);

		var lt = "browser-lastwindow-close-granted";
		var lw = () => this.quit = true;
		Services.obs.addObserver(lw, lt);

		Services.obs.addObserver(function quit(s, t) {
			self.quit = true;
			Services.obs.removeObserver(self, topic);
			Services.obs.removeObserver(lw, lt);
			Services.obs.removeObserver(quit, t);
		}, "quit-application-granted");
		this.initColors();
		this.newUsercontext = name => {
			var id = this.cis.create(
				name || `[ ${this.cis._lastUserContextId + 1} ]`, this.icon, this.nextColor()
			).userContextId;
			this.saveGens(this.gens.add(id));
			return id;
		}
		var cpref = "ucf.openInGeneratedContainer.containers";
		var arr = Services.prefs.getStringPref(cpref, "").split(",").map(Number).filter(Boolean);
		if (arr.length) {
			var ids = this.cis.getPublicIdentities().map(i => i.userContextId);
			arr = arr.filter(id => ids.includes(id));
		}
		this.gens = new Set(arr);
		(this.saveGens = () => Services.prefs.setStringPref(cpref, Array.from(this.gens).join(",")))();
	},
	observe(doc) {
		var list = doc.querySelectorAll(sel);
		if (!list.length) return;

		var menuitem = doc.createXULElement("menuitem");
		for(var args of Object.entries({
			selectiontype: "single",
			oncommand: "cmd(window)",
			nodetype: "folder|query",
			selection: "folder|query",
			label: "Открыть всё в контейнере",
			id: "placesContext_openContainer:tabs:newUsercontext"
		}))
			menuitem.setAttribute(...args);
		menuitem.cmd = this.cmd;
		menuitem.rnd = menuitem.constructor.prototype.render;
		menuitem.render = this.render;
		var [m1, m2] = menuitem.list = Array.from(list);
		(m2 || m1).after(menuitem);

		if (doc.documentElement.getAttribute("windowtype") != "navigator:browser") return;

		for(var btn of [
			doc.getElementById("tabs-newtab-button"),
			doc.getElementById("new-tab-button") ||
				doc.ownerGlobal.gNavToolbox.palette.querySelector("#new-tab-button")
		])
			if (btn) btn.checkForMiddleClick = this.click;

		var win = doc.ownerGlobal;
		this.redefDoSearch(win, win.customElements.get("searchbar").prototype);

		win.gBrowser.tabContainer.addEventListener("TabClose", this.tabClose);
		win.addEventListener("unload", this.winUnload, {once: true});
		this.quit = false;
	},
	winUnload(e) {
		var win = e.target.ownerGlobal;
		win.removeEventListener("TabClose", self.tabClose);
		if (self.quit) return;
		var gb = win.gBrowser;
		if (gb) for(var tab of gb.tabs) self.tabClose(null, tab);
	},
	closed: new Set(),
	cis: ChromeUtils.import("resource://gre/modules/ContextualIdentityService.jsm")
		.ContextualIdentityService,
	tabClose(e, tab = e.target) {
		var id = +tab.getAttribute("usercontextid");
		id && self.gens.has(id) && self.closed.add(id);
		self.closed.size == 1 && ChromeUtils.idleDispatch(self.meaybeRemove);
	},
	meaybeRemove() {
		var ids = Array.from(self.closed);
		self.closed.clear();
		for(var id of ids) self.meaybeRemoveById(id);
	},
	meaybeRemoveById(id) {
		for(var win of CustomizableUI.windows)
			if (win.document.querySelector(`tab.tabbrowser-tab[usercontextid="${id}"]`))
				return;
		this.saveGens(this.gens.delete(id));
		this.cis.remove(id);
	},
	redefDoSearch(win, proto) {
		var code = `(openTrustedLinkIn => [
			{${proto.doSearch}}, openTrustedLinkIn
		])(
			function otl(url, where, params) {
				/*
				if (where != "current")
*/
				if (where != "current") params.resolveOnNewTabCreated =
					br => gBrowser.moveTabTo(
						gBrowser.getTabForBrowser(br), Infinity
					),
					params.userContextId = otl.newUsercontext(
						document.getElementById("searchbar").value
					);
				openTrustedLinkIn(url, where, params);
			}
		);`;
		(this.redefDoSearch = (win, proto) => {
			var [obj, func] = win.eval(code);
			Object.assign(proto, obj);
			func.newUsercontext = this.newUsercontext;
		})(win, proto);
	},
	click(btn, e) {
		if (!(e.button != 2 || e.ctrlKey || e.shiftKey)) {
			var txt = e.view.readFromClipboard();
			if (txt) {
				var urls = txt.split("\n").map(self.map).filter(Boolean);
				if (urls.length) return e.preventDefault(),
					self.openFromClipboard(e.view, urls);
			}
		}
		e.view.checkForMiddleClick(btn, e);
	},
	eo: Object.create(null),
	map(str) {
		str = str.trim();
		try {
			var scheme = Services.io.extractScheme(str);
			var ph = Services.io.getProtocolHandler(scheme);
			if (ph.scheme == scheme)
				return Services.io.newURI(str) && {uri: str};
		} catch {}
	},
	openFromClipboard(win, urls) {
		if (win.OpenInTabsUtils.confirmOpenInTabs(urls.length, win))
			urls.load = true,
			this.open(win, this.eo, urls);
	},
	async render() {
		this.rnd();
		await new Promise(this.ownerGlobal.requestAnimationFrame);
		this.hidden || (this.hidden = this.list.every(self.every));
	},
	every: node => node.disabled || node.hidden,
	cmd(win) {
		var view = this.parentNode._view;
		var node = win.document.popupNode;
		node = node._placesView && node._placesView.result.root;
		self.open(win, node || view.selectedNode || view.result.root);
	},
	open(win, node, list) {
		var gbw = Cu.import("resource:///modules/PlacesUIUtils.jsm", {}).getBrowserWindow;
		var w = gbw(win);
		this.pu = w.PlacesUIUtils;
		this.fs = w.PlacesUtils.favicons;
		this.sysp = w.E10SUtils.SERIALIZED_SYSTEMPRINCIPAL;

		(this.open = (win, node, list) => {
			this.openURLs(gbw(win), list || win.PlacesUtils.getURLsForContainerNode(node));
			node.bookmarkGuid && this.pu.doCommand(win, "placesCmd_delete");
		})(win, node, list);
	},
	async openURLs(win, urls) {
		var userContextId = this.newUsercontext();
		var mark = !win.PrivateBrowsingUtils.isWindowPrivate(win);
		var {load} = urls, gb = win.gBrowser, pos = gb.selectedTab._tPos;

		for(var {uri, title, isBookmark} of urls) try {
			if (mark) isBookmark
				? this.pu.markPageAsFollowedBookmark(uri)
				: this.pu.markPageAsTyped(uri);

			if (load) {
				gb.addTrustedTab(uri, {index: ++pos, userContextId});
				continue;
			}
			var state = {userContextId, entries: [{
				url: uri,
				title: title || uri,
				triggeringPrincipal_base64: this.sysp
			}]};
			var [,, data, mime] = await new Promise(
				resolve => this.fs.getFaviconDataForPage(
					Services.io.newURI(uri), (...args) => resolve(args), 16
				)
			);
			if (data.length) state.image = `data:${
				mime || "image/x-icon"
			};base64,${
				btoa(String.fromCharCode(...data))
			}`;
			var tab = gb.addTrustedTab(null, {index: ++pos, userContextId});
			win.SessionStore.setTabState(tab, state);
		} catch {};
	}
}).init("chrome-document-loaded"))(
	"#placesContext_openBookmarkContainer\\:tabs,#placesContext_openContainer\\:tabs"
);

// Добавить контейнер в закладки....................
(async id => {
	var menuitem = document.createXULElement("menuitem");
	document.getElementById(id).after(menuitem);
	typeof addDestructor == "function"
		&& addDestructor(() => menuitem.remove());
	menuitem.render = function() {
		this.id = "context_bookmarkContainer";
		this.label = "Добавить контейнер в закладки";
		this.setAttribute("oncommand", "bookmark()");

		var bm = PlacesUtils.bookmarks, attr = "usercontextid";
		var {toolbarGuid: parentGuid, TYPE_FOLDER: type} = bm;
		this.bookmark = async () => {
			var tab = TabContextMenu.contextTab;
			var title = tab.label, id = tab.getAttribute(attr);
			var {guid} = await bm.insert({title, parentGuid, type});
			var tabs = [];
			for(tab of gBrowser.visibleTabs)
				tab.getAttribute(attr) == id
				&& tabs.unshift(tab) && await bm.insert({
					parentGuid: guid, title: tab.label,
					url: tab.linkedBrowser.currentURI.spec
				});
			gBrowser.removeTabs(tabs);
		}
		var raf = () => menuitem.hidden =
			!TabContextMenu.contextTab.hasAttribute(attr);
		var {render} = this.constructor.prototype;
		(this.render = () => {
			requestAnimationFrame(raf);
			render.call(menuitem);
		})();
	}
})("context_reopenInContainer");

(async query => {
	var width = 300;

	var tid, once = {once: true};
	var nh = tab => !tab.matches(":hover");

	await delayedStartupPromise;
	var slot = gBrowser.selectedTab.flattenedTreeParentNode;
	var lst = e => {
		var tab = e.target;
		if (
			tab.nodeName == "tab"
			//&& !tab.selected
			&& tab.linkedPanel
		)
			tid && clearTimeout(tid),
			tid = setTimeout(onTab, 200, tab);
	}
	var args = ["mouseenter", lst, true], cb;
	if (addEventListener != window.addEventListener)
		cb = true,
		addEventListener(...args, slot);
	else
		slot.addEventListener(...args),
		addEventListener("unload", () => 
			slot.removeEventListener(...args)
		, once);

	var onTab = tab => {
		tid = 0;
		if (nh(tab)) return;
		var br = tab.linkedBrowser;
		var cwg = br.browsingContext?.currentWindowGlobal;
		cwg && showPanel(tab, br, cwg);
	}
	var showPanel = (...args) => {
		var popup = (cb ? this : mainPopupSet)
			.appendChild(document.createXULElement("panel"));
		popup.setAttribute("noautofocus", true);
		popup.setAttribute("consumeoutsideclicks", "never");
		var hide = () => popup.hidePopup();

		var canvas = popup.appendChild(document.createElement("canvas"));
		canvas.width = width;
		var context = canvas.getContext("2d", {alpha: false});

		if (parseInt(Services.appinfo.platformVersion) >= 81) {
			var wp = "width", hp = "height";
			query += "Info";
		} else {
			var wp = 0, hp = 1;
			query += "Size";
		}
		(showPanel = async (tab, br, cwg) => {
			var res = await cwg.getActor("Thumbnails").sendQuery(query);
			if (nh(tab)) return;

			var w = res[wp];
			if (w < width) return;

			var h = res[hp], k = width / w;
			try {var bitmap = await cwg.drawSnapshot(
				new DOMRect(0, 0, w, h), k, "white"
			);} catch {return;}

			if (nh(tab) || !bitmap) return;

			canvas.height = k * h;
			context.drawImage(bitmap, 0, 0);
			bitmap.close();
			popup.openPopup(tab, "after_start");
			tab.addEventListener("mouseleave", hide, once);
		})(...args);
	}
})("Browser:Thumbnail:Content");

(async query => {
	var width = 300;

	var tid, once = {once: true};
	var nh = tab => !tab.matches(":hover");

	await delayedStartupPromise;
	var slot = gBrowser.selectedTab.flattenedTreeParentNode;
	var lst = e => {
		var tab = e.target;
		if (
			tab.nodeName == "tab"
			//&& !tab.selected
		)
			tid && clearTimeout(tid),
			tid = setTimeout(onTab, 200, tab);
	}
	var args = ["mouseenter", lst, true], cb = false;
	if (addEventListener != window.addEventListener)
		cb = true,
		addEventListener(...args, slot);
	else
		slot.addEventListener(...args),
		addEventListener("unload", () => 
			slot.removeEventListener(...args)
		, once);

	var g = Cu.getGlobalForObject(Cu);
	var key = "TabHoverSnapshotsStorage";
	var storage = g[key];
	if (!storage) {
		var func = (key, cb) => (this[key] = {get data() {
			var mo = p => ChromeUtils.import(`resource://gre/modules/${p}.jsm`)[p];

			var file = mo("Services").dirsvc.get("ProfD", Ci.nsIFile);
			file.append(key + ".json");

			var data = Object.create(null);
			try {Object.assign(data, JSON.parse(Cu.readUTF8File(file)));} catch {}

			var skip = true;
			var blocker = () => {
				if (skip) return Promise.resolve();
				var fu = mo("FileUtils");
				var sfs = fu.openSafeFileOutputStream(file);
				var sis = Cc["@mozilla.org/io/string-input-stream;1"]
					.createInstance(Ci.nsISupportsCString);
				sis.data = JSON.stringify(data, null, "\t");

				return new Promise(resolve => mo("NetUtil").asyncCopy(
					sis, sfs, () => resolve(fu.closeSafeFileOutputStream(sfs))
				));
			}
			var pbc = mo("AsyncShutdown").profileBeforeChange;
			pbc.addBlocker(key, blocker);
			if (cb) this.destroy = save => {
				delete globalThis[key];
				pbc.removeBlocker(blocker);
				save && blocker();
			}
			this.images = Object.create(null);
			this.set = (...args) => {
				skip = false;
				(this.set = (url, src) => data[url] = src)(...args);
			}
			delete this.data;
			return this.data = data;
		}});
		storage = g.eval(`(${func})("${key}", ${cb});`);
	}
	cb && addDestructor(r => r[5] == "e" && g[key]?.destroy(r[0] == "u"));

	var onTab = tab => {
		tid = 0;
		if (nh(tab)) return;
		var br = tab.linkedBrowser;
		var cwg = br.browsingContext?.currentWindowGlobal;
		openPopup(tab, br, cwg);
	}
	var openPopup = (...args) => {
		var popup = (cb ? this : mainPopupSet)
			.appendChild(document.createXULElement("menupopup"));

		popup.setAttribute("ignorekeys", true);
		popup.setAttribute("consumeoutsideclicks", "never");
		popup.shadowRoot.querySelector("style").append(`
			:host {
				padding: 0 !important;
				margin-top: 1px !important;
				-moz-appearance: none !important;
			}
			arrowscrollbox::part(scrollbutton-up),
			arrowscrollbox::part(scrollbutton-down) {
				display: none !important;
			}
		`);
		var hide = () => popup.hidePopup();

		var canvas = popup.appendChild(document.createElement("canvas"));
		canvas.width = width;
		var context = canvas.getContext("2d", {alpha: false});
		
		if (parseInt(Services.appinfo.platformVersion) >= 81) {
			var wp = "width", hp = "height";
			query += "Info";
		} else {
			var wp = 0, hp = 1;
			query += "Size";
		}
		(openPopup = async (tab, br, cwg) => {
			var url = br.currentURI.specIgnoringRef;
			var store = url.length < 640;
			if (tab.linkedPanel) {
				if (!cwg) return;
				var res = await cwg.getActor("Thumbnails").sendQuery(query);
				if (nh(tab)) return;

				var w = res[wp];
				if (w < width) return;

				var h = res[hp], k = width / w;
				try {var bitmap = await cwg.drawSnapshot(
					new DOMRect(0, 0, w, h), k, "white"
				);} catch {}

				if (nh(tab) || !bitmap) return;

				canvas.height = k * h;
				context.drawImage(bitmap, 0, 0);
				bitmap.close();
				if (store) {
					var src = canvas.toDataURL();
					if (src != storage.data[url])
						storage.set(url, src),
						delete storage.images[url];
				}
			} else {
				if (!store) return;
				var img = storage.images?.[url];
				if (!img) {
					var src = storage.data[url];
					if (!src) return;
					img = storage.images[url] = new Image();
					img.src = src;
					await new Promise(resolve => img.onloadend = resolve);
					if (nh(tab)) return;
				}
				context.drawImage(img, 0, 0, width, canvas.height =
					img.naturalHeight * width / img.naturalWidth
				);
			}
			popup.openPopup(tab, "after_start");
			tab.addEventListener("mouseleave", hide, once);
		})(...args);
	}
})("Browser:Thumbnail:Content");

var EXPORTED_SYMBOLS = ["TreeStyleTabPreviewPopupChild", "TreeStyleTabPreviewPopupParent"];
if (!ChromeUtils.domProcessChild.childID) {

	var popupWidth = 300;

	var name = "TreeStyleTabPreviewPopup";
	var host, tstId = "treestyletab@piro.sakura.ne.jp";

	var manager = ChromeUtils.import("resource://gre/modules/ExtensionParent.jsm")
		.ExtensionParent.apiManager;
	var tt = manager.global.tabTracker;

	var wait = (e, isAppShutdown) => isAppShutdown || manager.on("ready", onReady);
	var onReady = (e, addon) => {
		if (addon.id != tstId) return;
		manager.off("ready", onReady);
		addon.once("shutdown", wait);
		init(addon.uuid);
	}
	wait();

	var init = uuid => {
		if (host == uuid) return;
		host && ChromeUtils.unregisterWindowActor(name);

		ChromeUtils.registerWindowActor(name, {
			parent: {moduleURI: __URI__},
			messageManagerGroups: ["webext-browsers"],
			child: {moduleURI: __URI__, events: {mouseover: {}}},
			matches: [`moz-extension://${host = uuid}/sidebar/sidebar.html*`]
		});
	}
	var popupId = "ucf-tst-preview-popup";

	var TreeStyleTabPreviewPopupParent = class extends JSWindowActorParent {
		actorCreated() {
			var doc = this.browsingContext.topChromeWindow.document;
			var popup = doc.getElementById(popupId);
			if (!popup) {
				popup = doc.createXULElement("menupopup");
				popup.id = popupId;
				popup.setAttribute("ignorekeys", true);
				popup.setAttribute("consumeoutsideclicks", "never");
				popup.shadowRoot.querySelector("style").append(`
					:host {
						padding: 0 !important;
						-moz-appearance: none !important;
					}
					arrowscrollbox::part(scrollbutton-up),
					arrowscrollbox::part(scrollbutton-down) {
						display: none !important;
					}
				`);
				(popup.canvas = popup.appendChild(doc.createElement("canvas")))
					.width = popupWidth;
				popup.context = popup.canvas.getContext("2d", {alpha: false});
				doc.getElementById("mainPopupSet").append(popup);
			}
			this.popup = popup;
		}
		receiveMessage(msg) {
			var id = msg.data;
			if (!id) return this.popup.hidePopup();

			var tab = tt.getTab(+id.slice(4));
			if (tab/* && !tab.selected*/) {
				var cwg = tab.linkedBrowser.browsingContext?.currentWindowGlobal;
				cwg && this.drawSnapshot(tab.ownerDocument, cwg, id);
			}
		}
		async drawSnapshot(doc, cwg, id) {
			var {width, height} = await cwg.getActor("Thumbnails")
				.sendQuery("Browser:Thumbnail:ContentInfo");
			if (width < 200) return;

			var k = popupWidth / width;
			try {var bitmap = await cwg.drawSnapshot(
				new DOMRect(0, 0, width, height), k, "white"
			);} catch {}

			if (bitmap) {
				var data = await this.sendQuery(id);
				if (data) {
					this.popup.canvas.height = k * height;
					this.popup.context.drawImage(bitmap, 0, 0);
					bitmap.close();
					this.popup.openPopupAtScreenRect("after_start", ...data);
				}
			}
		}
		didDestroy() {
			this.popup = null;
		}
	}
}

class TreeStyleTabPreviewPopupChild extends JSWindowActorChild {
	actorCreated() {
		this.args = ["mouseleave", () => {
			this.tab = null;
			this.tid || this.sendAsyncMessage("");
			this.tid = this.clearTimeout();
		}, {once: true}];
	}
	mult(val) {
		return this * val;
	}
	receiveMessage(msg) {
		var tab = this.document.getElementById(msg.name);
		var res = tab?.matches(":hover");
		if (res) {
			var {x, y, width, height} = tab.getBoundingClientRect();
			var win = tab.ownerGlobal;
			res = [
				x + win.mozInnerScreenX,
				y + win.mozInnerScreenY,
				width, height
			];
			var z = win.windowUtils.screenPixelsPerCSSPixel;
			if (z != 1) res = res.map(this.mult, z);
		}
		return res;
	}
	handleEvent(e) {
		var tab = e.target.closest("tab-item");
		if (!tab || tab == this.tab) return;
		this.clearTimeout();
		this.tid = this.contentWindow
			.setTimeout(this.onTab, 200, this.tab = tab, this);
		tab.addEventListener(...this.args);
	}
	clearTimeout() {
		this.tid && this.contentWindow.clearTimeout(this.tid);
	}
	onTab(tab, self) {
		self.tid = null;
		tab.wrappedJSObject.apiTab.discarded
			|| self.sendAsyncMessage("", tab.id);
	}
	didDestroy() {
		this.tab = null;
	}
}

(async query => {
	var width = 300;

	var tid, once = {once: true};
	var nh = tab => !tab.matches(":hover");

	await delayedStartupPromise;
	var slot = gBrowser.selectedTab.flattenedTreeParentNode;
	var lst = e => {
		var tab = e.target;
		if (
			tab.nodeName == "tab"
			//&& !tab.selected
		)
			tid && clearTimeout(tid),
			tid = setTimeout(onTab, 200, tab);
	}
	var args = ["mouseenter", lst, true], cb = false;
	if (addEventListener != window.addEventListener)
		cb = true,
		addEventListener(...args, slot);
	else
		slot.addEventListener(...args),
		addEventListener("unload", () => 
			slot.removeEventListener(...args)
		, once);

	var g = Cu.getGlobalForObject(Cu);
	var key = "TabHoverSnapshotsStorage";
	var storage = g[key];
	if (!storage) {
		var func = (key, cb) => (this[key] = {get data() {
			var mo = p => ChromeUtils.import(`resource://gre/modules/${p}.jsm`)[p];

			var file = mo("Services").dirsvc.get("ProfD", Ci.nsIFile);
			file.append(key + ".json");

			var data = Object.create(null);
			try {Object.assign(data, JSON.parse(Cu.readUTF8File(file)));} catch {}

			var skip = true;
			var blocker = () => {
				if (skip) return Promise.resolve();
				var fu = mo("FileUtils");
				var sfs = fu.openSafeFileOutputStream(file);
				var sis = Cc["@mozilla.org/io/string-input-stream;1"]
					.createInstance(Ci.nsISupportsCString);
				sis.data = JSON.stringify(data, null, "\t");

				return new Promise(resolve => mo("NetUtil").asyncCopy(
					sis, sfs, () => resolve(fu.closeSafeFileOutputStream(sfs))
				));
			}
			var pbc = mo("AsyncShutdown").profileBeforeChange;
			pbc.addBlocker(key, blocker);
			if (cb) this.destroy = save => {
				delete globalThis[key];
				pbc.removeBlocker(blocker);
				save && blocker();
			}
			this.images = Object.create(null);
			this.set = (...args) => {
				skip = false;
				(this.set = (url, src) => data[url] = src)(...args);
			}
			delete this.data;
			return this.data = data;
		}});
		storage = g.eval(`(${func})("${key}", ${cb});`);
	}
	cb && addDestructor(r => r[5] == "e" && g[key]?.destroy(r[0] == "u"));

	var onTab = tab => {
		tid = 0;
		if (nh(tab)) return;
		var br = tab.linkedBrowser;
		var cwg = br.browsingContext?.currentWindowGlobal;
		openPopup(tab, br, cwg);
	}
	var openPopup = (...args) => {
		var popup = (cb ? this : mainPopupSet)
			.appendChild(document.createXULElement("menupopup"));

		popup.setAttribute("ignorekeys", true);
		popup.setAttribute("consumeoutsideclicks", "never");
		popup.shadowRoot.querySelector("style").append(`
			:host {
				padding: 0 !important;
				margin-top: 1px !important;
				-moz-appearance: none !important;
			}
			arrowscrollbox::part(scrollbutton-up),
			arrowscrollbox::part(scrollbutton-down) {
				display: none !important;
			}
		`);
		var hide = () => popup.hidePopup();

		var canvas = popup.appendChild(document.createElement("canvas"));
		canvas.width = width;
		var context = canvas.getContext("2d", {alpha: false});
		
		if (parseInt(Services.appinfo.platformVersion) >= 81) {
			var wp = "width", hp = "height";
			query += "Info";
		} else {
			var wp = 0, hp = 1;
			query += "Size";
		}
		(openPopup = async (tab, br, cwg) => {
			var url = br.currentURI.specIgnoringRef;
			var store = url.length < 640;
			if (tab.linkedPanel) {
				if (!cwg) return;
				var res = await cwg.getActor("Thumbnails").sendQuery(query);
				if (nh(tab)) return;

				var w = res[wp];
				if (w < width) return;

				var h = res[hp], k = width / w;
				try {var bitmap = await cwg.drawSnapshot(
					new DOMRect(0, 0, w, h), k, "white"
				);} catch {}

				if (nh(tab) || !bitmap) return;

				canvas.height = k * h;
				context.drawImage(bitmap, 0, 0);
				bitmap.close();
				if (store) {
					var src = canvas.toDataURL();
					if (src != storage.data[url])
						storage.set(url, src),
						delete storage.images[url];
				}
			} else {
				if (!store) return;
				var img = storage.images?.[url];
				if (!img) {
					var src = storage.data[url];
					if (!src) return;
					img = storage.images[url] = new Image();
					img.src = src;
					await new Promise(resolve => img.onloadend = resolve);
					if (nh(tab)) return;
				}
				context.drawImage(img, 0, 0, width, canvas.height =
					img.naturalHeight * width / img.naturalWidth
				);
			}
			popup.openPopup(tab, "after_start");
			tab.addEventListener("mouseleave", hide, once);
		})(...args);
	}
})("Browser:Thumbnail:Content");