Kendo mixin to automate closing of kendo elements on ui

gistfile1.coffee

## this is the mixin 
  Concerns.Kendo =
    onBeforeClose: ->
      @destroyKendos()

    destroyKendos: ->
      for key, el of @ui
        widget = kendo.widgetInstance(el, kendo.ui)
        widget?.destroy?()
        

## this is the view consumer
class View extends App.Views.ItemView
  template: "kendo"

  ui:
    foo:          "#foo"
    input:        "#not-kendo-input"
    autoComplete: "#autoComplete"
    dropDownList: "#dropDownList"

  onShow: ->
    @ui.autoComplete.kendoAutoComplete()
    @ui.dropDownList.kendoDropDownList()

  @include "Kendo"