(function ($) {(function ($) {Utility class to manage multiple callbacks.
$.CustomEvent = function (host, eventType) {
this._host = host;
this.eventType = eventType;
this._callbacks = new $.Callbacks();
};Triggers the event, and returns a jQuery.Event object.
$.CustomEvent.prototype.fire = function (data, host) {
var evt = new $.Event(this.eventType);
$.extend(evt, data);
evt.data = $.extend({}, evt.data, data);
this._callbacks.fireWith(host || this._host, [evt]);
return evt;
};Assigns an event handler
$.CustomEvent.prototype.add = function (callback) {
if (callback) {
this._callbacks.add(callback);
}
}; $.CustomEvent.prototype.one = function (callback) {
if (!callback) {
return;
}
var me = this;
var wrapper = $.proxy(function () {
try {
callback.apply(this, arguments);
} finally {
me.remove(wrapper);
}
}, this);
this.add(wrapper);
}; $.CustomEvent.prototype.remove = function (callback) {
if (callback) {
this._callbacks.remove(callback);
}
};Removes all event handlers
$.CustomEvent.prototype.empty = function () {
this._callbacks.empty();
};Utility for adding an event to an object more tersely
$.CustomEvent.create = function (host, eventType) {
var onEventType = "on" + eventType;
var evt = new $.CustomEvent(host, eventType);
host[onEventType] = evt;
return evt;
};
})(jQuery);