I am afraid that at the time being, you can only define a string (comma separated values) to which the list could bind to. You can still use a kendo
DataSource object, but you should manually concatenate its dataItems, in order to create such string and supply the editors with it.
The other option that you have is to use the custom editor and place a DropDown in the window. Then you can set the preferable datasource
for this editor:
Hope this would help.