source: Dev/branches/rest-dojo-ui/client/dojo/Evented.js @ 256

define(["./aspect", "./on"], function(aspect, on){
        // summary:
        //              The export of this module is a class that can be used as a mixin or base class, 
        //              to add on() and emit() methods to a class
        //              for listening for events and emiting events:
        //              |define(["dojo/Evented"], function(Evented){
        //              |       var EventedWidget = dojo.declare([Evented, dijit._Widget], {...});
        //              |       widget = new EventedWidget();
        //              |       widget.on("open", function(event){
        //              |       ... do something with event
        //              |        });
        //              |
        //              |       widget.emit("open", {name:"some event", ...});

        "use strict";
        var after = aspect.after;
        function Evented(){
        }
        Evented.prototype = {
                on: function(type, listener){
                        return on.parse(this, type, listener, function(target, type){
                                return after(target, 'on' + type, listener, true);
                        });
                },
                emit: function(type, event){
                        var args = [this];
                        args.push.apply(args, arguments);
                        return on.emit.apply(on, args);
                }
        };
        return Evented;
});