Mousetrap.js

/* mousetrap v1.4.6 craig.is/killing/mice */
(function (J, r, f) {
	function s(a, b, d) {
		a.addEventListener ? a.addEventListener(b, d, !1) : a.attachEvent("on" + b, d)
	}

	function A(a) {
		if ("keypress" == a.type) {
			var b = String.fromCharCode(a.which);
			a.shiftKey || (b = b.toLowerCase());
			return b
		}
		return h[a.which] ? h[a.which] : B[a.which] ? B[a.which] : String.fromCharCode(a.which).toLowerCase()
	}

	function t(a) {
		a = a || {};
		var b = !1,
			d;
		for (d in n) a[d] ? b = !0 : n[d] = 0;
		b || (u = !1)
	}

	function C(a, b, d, c, e, v) {
		var g, k, f = [],
			h = d.type;
		if (!l[a]) return [];
		"keyup" == h && w(a) && (b = [a]);
		for (g = 0; g < l[a].length; ++g)
			if (k =
				l[a][g], !(!c && k.seq && n[k.seq] != k.level || h != k.action || ("keypress" != h || d.metaKey || d.ctrlKey) && b.sort().join(",") !== k.modifiers.sort().join(","))) {
				var m = c && k.seq == c && k.level == v;
				(!c && k.combo == e || m) && l[a].splice(g, 1);
				f.push(k)
			}
		return f
	}

	function K(a) {
		var b = [];
		a.shiftKey && b.push("shift");
		a.altKey && b.push("alt");
		a.ctrlKey && b.push("ctrl");
		a.metaKey && b.push("meta");
		return b
	}

	function x(a, b, d, c) {
		m.stopCallback(b, b.target || b.srcElement, d, c) || !1 !== a(b, d) || (b.preventDefault ? b.preventDefault() : b.returnValue = !1, b.stopPropagation ?
			b.stopPropagation() : b.cancelBubble = !0)
	}

	function y(a) {
		"number" !== typeof a.which && (a.which = a.keyCode);
		var b = A(a);
		b && ("keyup" == a.type && z === b ? z = !1 : m.handleKey(b, K(a), a))
	}

	function w(a) {
		return "shift" == a || "ctrl" == a || "alt" == a || "meta" == a
	}

	function L(a, b, d, c) {
		function e(b) {
			return function () {
				u = b;
				++n[a];
				clearTimeout(D);
				D = setTimeout(t, 1E3)
			}
		}

		function v(b) {
			x(d, b, a);
			"keyup" !== c && (z = A(b));
			setTimeout(t, 10)
		}
		for (var g = n[a] = 0; g < b.length; ++g) {
			var f = g + 1 === b.length ? v : e(c || E(b[g + 1]).action);
			F(b[g], f, c, a, g)
		}
	}

	function E(a, b) {
		var d,
			c, e, f = [];
		d = "+" === a ? ["+"] : a.split("+");
		for (e = 0; e < d.length; ++e) c = d[e], G[c] && (c = G[c]), b && "keypress" != b && H[c] && (c = H[c], f.push("shift")), w(c) && f.push(c);
		d = c;
		e = b;
		if (!e) {
			if (!p) {
				p = {};
				for (var g in h) 95 < g && 112 > g || h.hasOwnProperty(g) && (p[h[g]] = g)
			}
			e = p[d] ? "keydown" : "keypress"
		}
		"keypress" == e && f.length && (e = "keydown");
		return {
			key: c,
			modifiers: f,
			action: e
		}
	}

	function F(a, b, d, c, e) {
		q[a + ":" + d] = b;
		a = a.replace(/\s+/g, " ");
		var f = a.split(" ");
		1 < f.length ? L(a, f, b, d) : (d = E(a, d), l[d.key] = l[d.key] || [], C(d.key, d.modifiers, {
				type: d.action
			},
			c, a, e), l[d.key][c ? "unshift" : "push"]({
			callback: b,
			modifiers: d.modifiers,
			action: d.action,
			seq: c,
			level: e,
			combo: a
		}))
	}
	var h = {
		8: "backspace",
		9: "tab",
		13: "enter",
		16: "shift",
		17: "ctrl",
		18: "alt",
		20: "capslock",
		27: "esc",
		32: "space",
		33: "pageup",
		34: "pagedown",
		35: "end",
		36: "home",
		37: "left",
		38: "up",
		39: "right",
		40: "down",
		45: "ins",
		46: "del",
		91: "meta",
		93: "meta",
		224: "meta"
	}, B = {
			106: "*",
			107: "+",
			109: "-",
			110: ".",
			111: "/",
			186: ";",
			187: "=",
			188: ",",
			189: "-",
			190: ".",
			191: "/",
			192: "`",
			219: "[",
			220: "\\",
			221: "]",
			222: "'"
		}, H = {
			"~": "`",
			"!": "1",
			"@": "2",
			"#": "3",
			$: "4",
			"%": "5",
			"^": "6",
			"&": "7",
			"*": "8",
			"(": "9",
			")": "0",
			_: "-",
			"+": "=",
			":": ";",
			'"': "'",
			"<": ",",
			">": ".",
			"?": "/",
			"|": "\\"
		}, G = {
			option: "alt",
			command: "meta",
			"return": "enter",
			escape: "esc",
			mod: /Mac|iPod|iPhone|iPad/.test(navigator.platform) ? "meta" : "ctrl"
		}, p, l = {}, q = {}, n = {}, D, z = !1,
		I = !1,
		u = !1;
	for (f = 1; 20 > f; ++f) h[111 + f] = "f" + f;
	for (f = 0; 9 >= f; ++f) h[f + 96] = f;
	s(r, "keypress", y);
	s(r, "keydown", y);
	s(r, "keyup", y);
	var m = {
		bind: function (a, b, d) {
			a = a instanceof Array ? a : [a];
			for (var c = 0; c < a.length; ++c) F(a[c], b, d);
			return this
		},
		unbind: function (a, b) {
			return m.bind(a, function () {}, b)
		},
		trigger: function (a, b) {
			if (q[a + ":" + b]) q[a + ":" + b]({}, a);
			return this
		},
		reset: function () {
			l = {};
			q = {};
			return this
		},
		stopCallback: function (a, b) {
			return -1 < (" " + b.className + " ").indexOf(" mousetrap ") ? !1 : "INPUT" == b.tagName || "SELECT" == b.tagName || "TEXTAREA" == b.tagName || b.isContentEditable
		},
		handleKey: function (a, b, d) {
			var c = C(a, b, d),
				e;
			b = {};
			var f = 0,
				g = !1;
			for (e = 0; e < c.length; ++e) c[e].seq && (f = Math.max(f, c[e].level));
			for (e = 0; e < c.length; ++e) c[e].seq ? c[e].level == f && (g = !0,
				b[c[e].seq] = 1, x(c[e].callback, d, c[e].combo, c[e].seq)) : g || x(c[e].callback, d, c[e].combo);
			c = "keypress" == d.type && I;
			d.type != u || w(a) || c || t(b);
			I = g && "keydown" == d.type
		}
	};
	J.Mousetrap = m;
	"function" === typeof define && define.amd && define(m)
})(window, document);