source: Dev/trunk/src/client/dojox/mobile/SpinWheel.js

define([
        "dojo/_base/declare",
        "dojo/_base/array",
        "dojo/dom-construct",
        "./_PickerBase",
        "./SpinWheelSlot" // to load SpinWheelSlot for you (no direct references)
], function(declare, array, domConstruct, PickerBase){

        // module:
        //              dojox/mobile/SpinWheel

        return declare("dojox.mobile.SpinWheel", PickerBase, {
                // summary:
                //              A value picker widget that has spin wheels.
                // description:
                //              SpinWheel is a value picker component. It is a sectioned wheel
                //              that can be used to pick up some values from the wheel slots by
                //              spinning them.

                /* internal properties */       
                baseClass: "mblSpinWheel",

                buildRendering: function(){
                        this.inherited(arguments);
                        domConstruct.create("div", {className: "mblSpinWheelBar"}, this.domNode);
                },

                startup: function(){
                        if(this._started){ return; }
                        this.centerPos = Math.round(this.domNode.offsetHeight / 2);
                        this.inherited(arguments);
                },

                resize: function() {
                        this.centerPos = Math.round(this.domNode.offsetHeight / 2);
                        array.forEach(this.getChildren(), function(child){
                                child.resize && child.resize();
                        });
                },

                addChild: function(/*Widget*/ widget, /*int?*/ insertIndex){
                        this.inherited(arguments);
                        if(this._started){
                                widget.setInitialValue();
                        }
                }
        });
});