How to succesfully replace 4 components with 7? :)

[Leo Budima]

Related to my previous post, I'm trying to allow a user to click a link and show 3 more file components upload and not to complicate things too much. Since javascript can't be of any help with setting rendered attribute and I don't like the solution of showing and hiding additional div with comps inside (if nothing than because of the possitioning problems), I thought I could try something like this:

If a user clicks a link, I call the same page with "more" parameter:

<a href="upload.jsp?more=1" target="_self">link</a>

and in the page I have:

  
 
//checking the parameter and if it's set show 6 upload comps and a submit //button
<%if (request.getParameter("more") != null){
        String param = request.getParameter("more");
if (param.equals("1")) {
%>
     <h:form enctype="multipart/form-data">
<u:upload styleClass="upinput"/>
        <u:upload styleClass="upinput"/>
        <u:upload styleClass="upinput"/>
        <u:upload styleClass="upinput"/>
        <u:upload styleClass="upinput"/>
        <u:upload styleClass="upinput"/><br/><br/>
<h:commandButton value="Upload" styleClass="upbutt" action="submit"/></h:form>
 
//else showing just 3 of them and a submit button
 
<% }} else { %>
        <h:form enctype="multipart/form-data">
<u:upload styleClass="upinput"/>
        <u:upload styleClass="upinput"/>
        <u:upload styleClass="upinput"/>
        <h:commandButton value="Upload" styleClass="upbutt" action="submit"/>
</h:form>
<% }; %>

Logically, it should work ok, but guess what - it doesn't.
Instead of getting 6 upload components followed by a submit button, I
get 3 comps, then a button, 2 more components and again a button ?!

I've tried several variants, mostly placing <h:form> and <h:commandButton> in and out of the JSP code and it gives different results all leading to one conclusion - it is obvious the renderer does not "substitute" component correctly if the new one is different, but I still don't know enough about JSF to solve this myself.

Does anyone have a clue how to solve this? Thanks!