Dojo Application Object

/**
 * Main application instance
 */
define(["dojo/_base/declare", "dojo/_base/config"], function(declare, dojoConfig) {
    "use strict";

    var AppSingletonClass = declare(null, {
        config: {},

        constructor: function () {
            this.config = dojoConfig.appConfig || {};
            console.debug("app config:", this.config);
        },

        run: function () {
            console.debug("app starting");
            this._initUI();
        // ....
            console.debug("app started");
        },

        _initUI: function () {
        // ....
        },

        doRefreshData: function(){
            require(["dojo/request"], function(request){
                request.post("app/hello", {
            // .....
                });
            }
        },

        doHello: function () {
            window.alert("hello");
        }
    });

    AppSingletonClass.getSingleton = function () {
        if (AppSingletonClass._singletonInstance === undefined || AppSingletonClass._singletonInstance === null) {
            AppSingletonClass._singletonInstance = new AppSingletonClass();
        }
        return AppSingletonClass._singletonInstance;
    };

    return AppSingletonClass.getSingleton();
});