I'm building my first sencha touch application and I'm looking into creating a custom field.

What I am trying to do I guess is similar to a select field, however instead of the drop down select with the static options, I want to have another panel pop up where I can do a location selection with a search field that queries a rest service for location names which match your search txt.

Kind of similar to using Autocomplete in jquery i guess.

Is anyone aware of any existing examples of this? Or can provide some pointers in the right direction?