how do autocomplete with ASE editor after character "."?

I using ANTLR with the editor ACE to build my own language ... so my question is tow part :

the first part :

I want to do autocomplete on ACE but after character "." I.e in programming languge when we do autocomplete for methods follow class ,example I want when I write (nameofclass. )after "." I want to show me ACE editor all method contain in class ...if I can how I do it ?.

the second part :

Can I use ANTLR and ACE in a dynamic web project , if I can how I can do it ?