JSF complicated custom component

[de valentino]

Hi. I need to write complicated custom JSF component.

I know how to write simple custom components, and receive String variables from tag attributes e.g.
https://github.com/devalentino/temp/blob/master/src/main/java/net/monopolyclub/components/component/UserData.java

But now I need to write custom component with additional tags (for example like dataTable and column tags).
How can I write such component? How can I receive collections in my component? How can I work with additional tags in my component.

for example I need something like:

<m:chat> <m:tab value="#{UserList}" /> <m:message value="#{MesageMap}" /> </m:chat>

where UserList - Collection with current users and MessageMap is Map with User as key and message as value.