polymer.go

func Register(proto Interface) {
	// Type detection
	refType := reflect.TypeOf(proto)
	if refType.Kind() == reflect.Ptr {
		refType = refType.Elem()
	}

	// Setup js.M object
	m := js.M{}
	m["is"] = proto.TagName()
	m["extends"] = proto.Extends()
	m["created"] = createdCallback(refType)

	// Register our prototype with polymer
	js.Global.Call("Polymer", m)
}

func createdCallback(refType reflect.Type) *js.Object {
	return js.MakeFunc(func(this *js.Object, arguments []*js.Object) interface{} {
		// Create a new Go side object and keep it around in this closure
		// That way, we can keep track of it across callbacks and calls
		newVal := reflect.New(refType).Interface().(Interface)

		// Call Created on the newly initialized struct
		fmt.Println("Calling created callback")
		newVal.Created()

		// Setup other callbacks
		this.Set("ready", func() {
			fmt.Println("Calling ready callback")
			newVal.Ready()
		})

		this.Set("attached", func() {
			fmt.Println("Calling attached callback")
			newVal.Attached()
		})

		this.Set("detached", func() {
			fmt.Println("Calling detached callback")
			newVal.Detached()
		})

		return nil
	})
}