[pygtk] Displaying children in a gtk.TreeModelFilter

[Lionel Dricot]

Hello,

I'm currently working closely with gtk.TreeModelFilter and I'm currently
stuck.

I've discovered that in order to have a row visible, that row has to return
True against the visible_func but, also, that *all his parents have to be
visible*.

This is rather important and not written in any GTK documentation I've seen
(maybe I should send a patch against pygtk doc for that).


As I consequence, I'm currently looking for a way to display children that
have an hidden parent. That children would be displayed at the root.

For example :

a
--> b
------->c
---------->d
 (d is child of c which is child of b which is child of b)
if b is not visible, my tree would display :

a
c
-->d


(currently, it only display "a").


How can I do that with my treemodelfilter ? It seems for me a rather
important usecase for a treemodelfilter but I cannot find any documentation
or code sample on the web about a way of doing that.

Thanks in advance for help or any useful input on this.


Lionel
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