140   var eventsApi = function(iteratee, events, name, callback, opts) {  argument
144 …  if (callback !== void 0 && 'context' in opts && opts.context === void 0) opts.context = callback;
151         events = iteratee(events, names[i], callback, opts);
155       events = iteratee(events, name, callback, opts);
162   Events.on = function(name, callback, context) {  argument
163     return internalOn(this, name, callback, context);
167   var internalOn = function(obj, name, callback, context, listening) {  argument
168     obj._events = eventsApi(onApi, obj._events || {}, name, callback, {
185   Events.listenTo = function(obj, name, callback) {  argument
199     internalOn(obj, name, callback, this, listening);
204   var onApi = function(events, name, callback, options) {  argument
205     if (callback) {
210 …  handlers.push({callback: callback, context: context, ctx: context || ctx, listening: listening});
219   Events.off = function(name, callback, context) {  argument
221     this._events = eventsApi(offApi, this._events, name, callback, {
230   Events.stopListening = function(obj, name, callback) {  argument
243       listening.obj.off(name, callback, this);
250   var offApi = function(events, name, callback, options) {  argument
257     if (!name && !callback && !context) {
280           callback && callback !== handler.callback &&
281             callback !== handler.callback._callback ||
308   Events.once = function(name, callback, context) {  argument
310     var events = eventsApi(onceMap, {}, name, callback, _.bind(this.off, this));
311     if (typeof name === 'string' && context == null) callback = void 0;
312     return this.on(events, callback, context);
316   Events.listenToOnce = function(obj, name, callback) {  argument
318     var events = eventsApi(onceMap, {}, name, callback, _.bind(this.stopListening, this, obj));
324   var onceMap = function(map, name, callback, offer) {  argument
325     if (callback) {
328         callback.apply(this, arguments);
330       once._callback = callback;
351   var triggerApi = function(objEvents, name, callback, args) {  argument
368       case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return;
369       case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return;
370       case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return;
371       case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return;
372       default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args); return;
1518     route: function(route, name, callback) {  argument
1521         callback = name;
1524       if (!callback) callback = this[name];
1528         if (router.execute(callback, args, name) !== false) {
1539     execute: function(callback, args, name) {  argument
1540       if (callback) callback.apply(this, args);
1782     route: function(route, callback) {  argument
1783       this.handlers.unshift({route: route, callback: callback});
1811           handler.callback(fragment);