(async sel => {
	var trees = ["places", "historySidebar"];
	var url = "resource://gre/modules/BrowserUtils.jsm";
	var bu = ChromeUtils.import(url).BrowserUtils, {whereToOpenLink} = bu;

	bu.whereToOpenLink = function(e) {
		var res = whereToOpenLink.apply(bu, arguments);
		if (res != "current" || !Event.isInstance(e)) return res;
		try {
			var skip = true, trg = e.composedTarget, win = trg.ownerGlobal;
			var name = win.document.documentURIObject
				.QueryInterface(Ci.nsIURL).fileName.slice(0, -6);

			if (name == "browser")
				skip = win.gBrowser.selectedTab.isEmpty || !trg.closest(sel);

			else if (trees.includes(name))
				skip = (win.opener || win.windowRoot.ownerGlobal).gBrowser.selectedTab.isEmpty
					|| trg.closest("tree").selectedNode.itemId != -1;

			return skip ? res : "tab";
		}
		catch {return res;}
	}
})("#historyMenuPopup,#PanelUI-history");

(async (id, url) => {
	if (location != url) return;
	var menuitem = document.createXULElement("menuitem");
	document.getElementById(id).after(menuitem);
	var hidden = () => !nsContextMenu.contentData.context.linkTextStr;	
	menuitem.hidden = true;
	menuitem.render = () => {
		if (hidden()) return;
		menuitem.hidden = false;
		menuitem.id = id + "text";
		menuitem.label = "Скопировать текст ссылки";
		menuitem.setAttribute("oncommand", "navigator.clipboard.writeText(gContextMenu.linkTextStr);");
		delete menuitem.render;
		menuitem.render();
		menuitem.render = () => menuitem.hidden = hidden();
	}
})("context-copylink", "chrome://browser/content/browser.xhtml");

(async (flag, url) => {
	if (location != url) return;
	await delayedStartupPromise;
	if (Downloads[flag]) return;
	Downloads[flag] = true;

	var bwt = BrowserWindowTracker;
	var show = function(download) {
		download.newDownloadNotified ||
		bwt.getTopWindow(this)?.DownloadsPanel.showPanel();
	};
	["PUBLIC", "PRIVATE"].forEach(async (type, ind) => {
		var view = Object.create(null);
		view.private = Boolean(ind);
		view.onDownloadChanged = show;
		(await Downloads.getList(Downloads[type])).addView(view);
	});
})("806555", "chrome://browser/content/browser.xhtml");

(async id => ({

  delay: 2e3,

  val: "",
  init(topic, mm) {
    Services.obs.addObserver(mm = this, topic);
    Services.obs.addObserver(function quit(s, t) {
      this.timer?.cancel();
      Services.obs.removeObserver(mm, topic);
      Services.obs.removeObserver(quit, t);
    }, "quit-application-granted");
  },
  observe(win) {
    var df = win.MozXULElement.parseXULToFragment(
      `<hbox id="${id}" tooltiptext="${
        "ЛКМ: Минимизировать потребление памяти&#xA;ПКМ: about:performance&#xA;Ctrl+ПКМ: about:debugging#/runtime/this-firefox"
      }" onclick="event.button || ${
        "memoryMinimizationButton.doMinimize(event)"
      }"><label id="${id += "-label"}"/></hbox>`
    );
    this.timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
    (this.observe = async win => {
      this.timer.cancel();
      await new Promise(ChromeUtils.idleDispatch);
      var clone = win.document.importNode(df, true);
      clone.firstChild.oncontextmenu = this.about;
      win.document.getElementById("star-button-box").after(clone);
      this.notify();
    })(win);
  },
  about(e) {
    var gb = e.view.gBrowser;
    gb.selectedTab = gb.addTrustedTab(`about:${
      e.ctrlKey ? "debugging#/runtime/this-firefox" : "performance"
    }`);
  },
  async notify() {
    var info = await ChromeUtils.requestProcInfo();
    var bytes = info.memory;
    for(var child of info.children) bytes += child.memory;
    this.timer.initWithCallback(this, this.delay, this.timer.TYPE_ONE_SHOT);

    var prev = this.val;
    if ((this.val = this.mgb(bytes)) != prev)
      for(var win of CustomizableUI.windows) {
        var lab = win.document.getElementById(id);
        if (lab) lab.value = this.val;
      }
  },
  mgb: bytes => bytes < 1073741824
    ? Math.round(bytes / 1048576) + "MB"
    : (bytes / 1073741824).toFixed(2) + "GB"
}).init("browser-delayed-startup-finished"))("ucf-mem-indicator");