GWT. Multiple widget's instances.

Portlets and GWT look nice together. At first sight.
There is one problem in their cooperation: we can't use multiple instances of same GWT modules in one html page, so we can't build normal portlet.

For example, I have simple GWT module with this entry point:

public class XLam implements EntryPoint {
...
 public void onModuleLoad()
 {
     RootPanel.get("unique_html_element_id").add(somewidget);
 }
}

And I would like to add this GWT module into my portlet. For this case I write code:

public class XLamPortlet extends GenericPortlet
{
 protected void doView(RenderRequest renderRequest, RenderResponse renderResponse) throws PortletException, PortletSecurityException, IOException
 {
  ...
     writer.println("<script language='javascript' src='" + renderRequest.getContextPath() + "/xqx.web.xlam.XLam.nocache.js'></script>");
     writer.println("<div id='unique_html_element_id'></div>");
     ...
 }
}

When I try to place two same portlets into one page I get collision between GWT instances, of course.

I think, that should be way to resolve this problem and I'm trying to find it.

Has someone any solution for this?

Today I've researched JavaScript, which generated by GWT compiler.
I found some ways how to resolve this problem.

It is possible to change some parts of the *.js compiled code, e.g.:.

Rewrite in *.cache.html
..
function wq(a)
{
    hh(pi('unique_html_element_id'), a.b);
    hh(pi($wnd.unique_html_element_id), a.b);
    a.c = lq(new kq(), a);
    id(a.c, 1000);
}
...
Define variables 'on the fly' in *.nocache.js
...
var unique_html_element_id='unique_html_element_id';
...

Or, maybe, rewrite or append additional parameters to some functions like this:

function gwtOnLoad(b, d, c)

But all these are dead-end ways :-(


I think, Google may create useful mechanism for this.

How? I mean, via special parameter in EntryPoint.onModuleLoad() function.


GWT Team, it is really necessary for many web developers!