[news.eclipse.platform] how to let the "New" dialog's tree remember whic

[zhang-wei@xxxxxxxxxx (wei zhang)]

Hi all,

When you follow this steps:
1.Select "File"Menu->"new"SubMenu->"other"Item, then "New" dialog will 
shown. On this dialog, there is a list-box which name is "Wizards". This 
list-box contain a Tree which shows "Simple" category.
When you expand this category, you will see some items("File", "Folder", 
"Project").

2.On this dialog("New" dialog), select "Simple"->"File"("Simple" category 
is expanded), you can create a new file.

3.After you create the new file, reselect "File"->"new"->"other", On "New" 
dialog, "Simple" category's status is expanded(Keep the Tree status like 
last time).

I don't know, how to let the "New" dialog's tree remember which category 
is expanded/collapsed on last time?

Could you give me more hints?
Thanks