How to have a grid's cells dependent contextual menu refreshed from the server?

[enguerran]

I would like to share my experience regarding a contextmenu attached to a listgrid which is refreshed from server according to the row the user clicks.

First of all, the context:
* a ListGrid attached to a DataSource
* a Menu attached to another DataSource
* both DataSources are set with 'DSProtocol.POSTXML' and a servlet DataURL

To set a Menu content with xml data, I tried this tags:

<List>
   <menuItem>
      <name>menu1</name>
      <icon>action/approve.png</icon>
      <title>Menu 1</title>
   </menuItem>
   <menuItem>
      <isSeparator>true</isSeparator>
   </menuItem>
</List>

To refresh data from server according to the row selected by the user, I tried to add a RowContextClickHandler to the ListGrid:

            grid.addRowContextClickHandler(new RowContextClickHandler()
            {
                public void onRowContextClick(RowContextClickEvent event)
                {
                    final ListGrid listGrid = (ListGrid) event.getSource();
                    Criteria criteria = new Criteria();
                    for(ListGridRecord rec : listGrid.getSelection())
                        criteria.addCriteria("ID", rec.getAttribute("ID"));
                    listGrid.getContextMenu().filterData(criteria);
                }
            });

And to execute action depending on the MenuItem the user clicks, I tried to add a RecordClickHandler to the Menu:

        contextMenu.addRecordClickHandler(new RecordClickHandler()
        {
            public void onRecordClick(RecordClickEvent event)
            {
                execute(event.getRecord().getAttribute("title"));
            }
        });

*Beware*
- The line "listGrid.getContextMenu().filterData(criteria);" disable the ItemClickHandler which have to be replaced as we can by a RecordClickHandler.
- The line "listGrid.getContextMenu().filterData(criteria);" disable the possibility shown by the showcase to build a hierarchical Menu (http://www.smartclient.com/smartgwt/showcase/#menus_category_treebinding).