1!function(i, e) {
2    var s, u, a = i.config.menuSettings, t = Function.prototype.bind ? function(e, t) {
3        return e.bind(t);
4    } : function(e, t) {
5        return function() {
6            e.apply(t, arguments);
7        };
8    }, o = Object.keys || function(e) {
9        var t = [];
10        for (var n in e) e.hasOwnProperty(n) && t.push(n);
11        return t;
12    }, n = MathJax.Ajax.config.path;
13    n.a11y || (n.a11y = i.config.root + "/extensions/a11y");
14    var l = e["accessibility-menu"] = {
15        version: "1.6.0",
16        prefix: "",
17        defaults: {},
18        modules: [],
19        MakeOption: function(e) {
20            return l.prefix + e;
21        },
22        GetOption: function(e) {
23            return a[l.MakeOption(e)];
24        },
25        AddDefaults: function() {
26            for (var e, t = o(l.defaults), n = 0; e = t[n]; n++) {
27                var i = l.MakeOption(e);
28                void 0 === a[i] && (a[i] = l.defaults[e]);
29            }
30        },
31        AddMenu: function() {
32            for (var e, t = Array(this.modules.length), n = 0; e = this.modules[n]; n++) t[n] = e.placeHolder;
33            var i, a, o = u.FindId("Accessibility");
34            o ? (t.unshift(s.RULE()), o.submenu.items.push.apply(o.submenu.items, t)) : ((i = (u.FindId("Settings", "Renderer") || {}).submenu) && (t.unshift(s.RULE()),
35            t.unshift(i.items.pop()), t.unshift(i.items.pop())), t.unshift("Accessibility"),
36            o = s.SUBMENU.apply(s.SUBMENU, t), (a = u.IndexOfId("Locale")) ? u.items.splice(a, 0, o) : u.items.push(s.RULE(), o));
37        },
38        Register: function(e) {
39            l.defaults[e.option] = !1, l.modules.push(e);
40        },
41        Startup: function() {
42            s = MathJax.Menu.ITEM, u = MathJax.Menu.menu;
43            for (var e, t = 0; e = this.modules[t]; t++) e.CreateMenu();
44            this.AddMenu();
45        },
46        LoadExtensions: function() {
47            for (var e, t = [], n = 0; e = this.modules[n]; n++) a[e.option] && t.push(e.module);
48            return t.length ? i.Startup.loadArray(t) : null;
49        }
50    }, r = MathJax.Extension.ModuleLoader = MathJax.Object.Subclass({
51        option: "",
52        name: [ "", "" ],
53        module: "",
54        placeHolder: null,
55        submenu: !1,
56        extension: null,
57        Init: function(e, t, n, i, a) {
58            this.option = e, this.name = [ t.replace(/ /g, ""), t ], this.module = n, this.extension = i,
59            this.submenu = a || !1;
60        },
61        CreateMenu: function() {
62            var e = t(this.Load, this);
63            this.submenu ? this.placeHolder = s.SUBMENU(this.name, s.CHECKBOX([ "Activate", "Activate" ], l.MakeOption(this.option), {
64                action: e
65            }), s.RULE(), s.COMMAND([ "OptionsWhenActive", "(Options when Active)" ], null, {
66                disabled: !0
67            })) : this.placeHolder = s.CHECKBOX(this.name, l.MakeOption(this.option), {
68                action: e
69            });
70        },
71        Load: function() {
72            i.Queue([ "Require", MathJax.Ajax, this.module, [ "Enable", this ] ]);
73        },
74        Enable: function(e) {
75            var t = MathJax.Extension[this.extension];
76            t && (t.Enable(!0, !0), MathJax.Menu.saveCookie());
77        }
78    });
79    l.Register(r("collapsible", "Collapsible Math", "[a11y]/collapsible.js", "collapsible")),
80    l.Register(r("autocollapse", "Auto Collapse", "[a11y]/auto-collapse.js", "auto-collapse")),
81    l.Register(r("explorer", "Explorer", "[a11y]/explorer.js", "explorer", !0)), l.AddDefaults(),
82    i.Register.StartupHook("End Extensions", function() {
83        i.Register.StartupHook("MathMenu Ready", function() {
84            l.Startup(), i.Startup.signal.Post("Accessibility Menu Ready");
85        }, 5);
86    }, 5), MathJax.Hub.Register.StartupHook("End Cookie", function() {
87        MathJax.Callback.Queue([ "LoadExtensions", l ], [ "loadComplete", MathJax.Ajax, "[a11y]/accessibility-menu.js" ]);
88    });
89}(MathJax.Hub, MathJax.Extension);