((obj, re) => {
	for(var p in klaBa) {
		var func = klaBa[p];
		if (typeof func == "string") func = klaBa[func];

		var [key, mod] = p.split("_");
		mod = mod || "";

		var first = key[0];
		var upper = first.toUpperCase();
		var prevent = first == upper;

		var [, m, i] = mod.match(re);
		m = m || 0; // modifiers bitmap

		var arr = [func, prevent, i ? i == "I" ? 1 : 0 : -1]; // textfields flag

		var prop = prevent ? key : upper + key.slice(1);
		var o = obj[prop] || (obj[prop] = Object.create(null));

		o[m] ? o[m].push(arr) : o[m] = [arr];
	}
	klaBa = obj;
})(Object.create(null), /(\d+)?(i)?/i);

keydown_win = e => { // перехват клавиш, учитывая поля ввода

	if (e.repeat) return;

	var data = klaBa[e.code]?.[e.metaKey*8 + e.ctrlKey*4 + e.shiftKey*2 + e.altKey];
	if (data) {
		var cmd = docShell.isCommandEnabled("cmd_insertText");

		for(var [func, p, i] of data) if (i ^ cmd)
			p && e.preventDefault(), func(e, gBrowser.selectedTab);
	}
},

var keyMap = Object.create(null);
(re => {
    var parse = (str, test) => {
        if (name.length < 2 || str.endsWith("_")) return null;

        var first = str[0];
        var upper = first.toUpperCase();
        var prevent = first == upper;
        upper = prevent ? str : upper + str.slice(1);

        if (test) return re.test(upper);

        var match = upper.match(re);
        if (match) {
            var [, kode, mod, i] = match;
            return [kode, str, prevent, i ? i == "I" ? 1 : 0 : -1, mod || 0];
        }
    }
    for(var name in klaBa) {
        var arr = parse(name);
        if (!arr) continue;

        var desc = Object.getOwnPropertyDescriptor(klaBa, name);
        if ("value" in desc) {
            var val = klaBa[name];
            if (typeof val == "string") {

                if (klaBa.hasOwnProperty(val) && parse(val, true)) arr[1] = val;
                else continue; // skip not alias strings
            }
            else if (typeof val != "function") continue; // skip not functions
        }
        else if (!desc.get) continue; // skip only setters

        var kode = arr.shift(), mod = arr.pop();

        var o = keyMap[kode] || (keyMap[kode] = Object.create(null));
        o[mod] ? o[mod].push(arr) : o[mod] = [arr];
    }

})(new RegExp(`^(${[
    // https://developer.mozilla.org/en-US/docs/Web/API/UI_Events/Keyboard_event_code_values

    "Key[A-Z]|F(?:1?\\d|2[0-4])|Digit\\d",
    "Numpad(?:\\d|Enter|Add|Comma|Subtract|Decimal|Divide|Multiply|Equal)",
    "(?:Bracket|Arrow|Control|Shift|Alt|OS)(?:Left|Right)|(?:Arrow|Page)(?:Up|Down)",
    "Space|Quote|Equal|Comma|Minus|Period|Slash|Semicolon|Backslash|CapsLock|ContextMenu",
    "Backquote|Help|Backspace|Tab|Enter|Escape|End|Home|Insert|Delete|PrintScreen|NumLock",
    "Again|Convert|Copy|Cut|Eject|Find|IntlBackslash|IntlRo|IntlYen|KanaMode|NonConvert",
    "Open|Paste|Pause|Power|Props|ScrollLock|Select|Sleep|Undo|WakeUp|Lang[1-2]",
    "Media(?:PlayPause|Select|Stop|TrackNext|TrackPrevious)|Volume(?:Up|Down|Mute)",
    "Browser(?:Back|Favorites|Forward|Home|Refresh|Search|Stop)|Launch(?:App1|App2|Mail)"

].join("|")})(?:_(\\d\\d?)?([iI])?)?$`));

keydown_win = e => { // перехват клавиш, учитывая поля ввода

    if (e.repeat) return;

    var data = keyMap[e.code]?.[e.metaKey*8 + e.ctrlKey*4 + e.shiftKey*2 + e.altKey];
    if (data) {
        var cmd = docShell.isCommandEnabled("cmd_insertText");

        for(var [name, p, i] of data) if (i ^ cmd)
            p && e.preventDefault(), klaBa[name](e, gBrowser.selectedTab);
    }
},

(async style => {
	var uri = Services.io.newURI("data:text/css;charset=utf-8," + encodeURIComponent(style));
	var sss = Cc["@mozilla.org/content/style-sheet-service;1"].getService(Ci.nsIStyleSheetService);
	sss.loadAndRegisterSheet(uri, sss.USER_SHEET);
})(`
...
`);

// сделать кнопку All Tabs (alltabs-button) съемной
(async topic => {
	var obs = doc => doc.getElementById("alltabs-button")?.setAttribute("removable", true);
	Services.obs.addObserver(obs, topic);
	Services.obs.addObserver(function quit(s, t) {
		Services.obs.removeObserver(quit, t);
		Services.obs.removeObserver(obs, topic);
	}, "quit-application-granted");
})("chrome-document-interactive");

// сделать кнопку unified-extensions-button съемной
(async topic => {
	var obs = doc => doc.getElementById("unified-extensions-button")?.setAttribute("removable", true);
	Services.obs.addObserver(obs, topic);
	Services.obs.addObserver(function quit(s, t) {
		Services.obs.removeObserver(quit, t);
		Services.obs.removeObserver(obs, topic);
	}, "quit-application-granted");
})("chrome-document-interactive");

((obj, re) => {
	var del = new Set();
	var platformRe = /_(?:win|linux|macosx)$/;
	var {platform} = AppConstants, num = -platform.length - 1;

	for(var p in klaBa) platformRe.test(p) && del.add(
		p.endsWith(platform) ? p.slice(0, num) : p
	);
	for(p in klaBa) del.has(klaBa[p]) && del.add(p);
	for(var d of del) delete klaBa[d];