[news.eclipse.platform.rcp] Command Parameter and dynamic menu

[Till Amma <till@xxxxxxxxxxx>]

Hello,

I'm trying to combine the nice turorials from Prakash about the command 
framework (http://wiki.eclipse.org/Platform_Command_Framework) and those 
about menu contributions (http://wiki.eclipse.org/Menu_Contributions).

What I try to accomplish is a dynamic submenu populated with a 
parameterized command. (a couple of items with the same command)

So, I defined the command with a parameter in the manifest. Also I 
defined the menu with a dynamic field which uses a CompoundContributionItem.

During the call from CompoundContributionItem#getContributionItems() I 
create CommandContributionItem s using CommandContributionItemParameter.

It actually works fine when there are no parameters given - the menu is 
populated with the Command and the label set in 
CommandContributionItemParameter.
But once I set a parameter the whole submenu is set inactive (grayed out).

Maybe I don't see the obvious solution but up to now i couldn't find one.
Creating a breakpoint during those calls causes eclipse, java and parts 
of the operating system to hang. (I assume because it stops during a 
system call, right?)

Using ISelectionService instead of a CommandParameter won't work for me 
because the information I need is not in a selection - if I understood 
the concepts right.

#######
#######

Code:
Some parts are shortened.

####
# plugin.xml (most interesting parts)
####
   <extension
         point="org.eclipse.ui.commands">
      <command
            defaultHandler="my.commandhandler"
            description="%command.description"
            id="my.commandid"
            name="%command.name">
         <commandParameter
               id="my.parameterid"
               name="ID"
               optional="true">
         </commandParameter>
      </command>
   </extension>

   <extension
         point="org.eclipse.ui.menus">
      <menuContribution
            locationURI="popup:my.menu">

         <menu
               label="Add from Repository">
            <dynamic
                  class="my.MyContributionItem"
                  id="my.dynamicMenu">
            </dynamic>
         </menu>
      </menuContribution>
   </extension>

####
# my CompoundContributionItem#getContributionItems()
####

@Override
protected IContributionItem[] getContributionItems()
{
	URepository repo = 
URepositoryUtils.getRepository(Activator.getDefault().getUView().getEditingDomain());
	EList<U> us = repo.getUs();

        Map<String, String> params;
	LinkedList<IContributionItem> list = new LinkedList<IContributionItem>();
	for(U u : us)
	{
		params = new HashMap<String, String>();
	        params.put("ID", Long.toString(u.getId()));
	
		CommandContributionItemParameter para = new 
CommandContributionItemParameter(PlatformUI.getWorkbench().getActiveWorkbenchWindow(), 
				"my.parameterid",
				"my.commandid",
				params,
				null,		// icon
				null,		// disabled icon
				null,		// hover icon
				u.getName(),	// label
				null,		// mnemonic
				u.getName(),	// tooltip
				CommandContributionItem.STYLE_PUSH,
				null,		// help context id
				true		// visibleEnable
			);
			list.add(new CommandContributionItem(para));
		}
		
		return (IContributionItem[]) list.toArray(new 
IContributionItem[list.size()]);
	}