source: Dev/trunk/src/client/dojox/mvc/resolve.js

define([
        "dojo/_base/lang",
        "dijit/registry",
        "dojo/Stateful"
], function(lang, registry){
        var resolve = function(/*dojo/Stateful|String*/ target, /*dojo/Stateful?*/ parent){
                // summary:
                //              Find a dojo/Stateful for the target.
                // description:
                //              If target is not a string, return target itself.
                //              If target is "widget:widgetid", returns the widget whose ID is widgetid.
                //              If target is "rel:object.path", or target is other string, returns an object under parent (if specified) or under global scope.
                // target: dojo/Stateful|String
                //              The data binding to resolve.
                // parent: dojo/Stateful?
                //              The parent data binding. Used when the data binding is defined inside repeat.

                if(typeof target == "string"){
                        var tokens = target.match(/^(expr|rel|widget):(.*)$/) || [];
                        try{
                                if(tokens[1] == "rel"){
                                        target = lang.getObject(tokens[2] || "", false, parent);
                                }else if(tokens[1] == "widget"){
                                        target = registry.byId(tokens[2]);
                                }else{
                                        target = lang.getObject(tokens[2] || target, false, parent);
                                }
                        }catch(e){}
                }

                return target; // dojo/Stateful
        };

        // lang.setObject() thing is for back-compat, remove it in 2.0
        return lang.setObject("dojox.mvc.resolve", resolve);
});