Re: Hiding individual TreeRows

[Matt Bragano <maestro485 comcast net>]

Jonathon Jongsma wrote:
> On 5/26/06, Matt Bragano <maestro485 comcast net> wrote:
> > Hi all,
> >
> > I've been experimenting with different ways to hide individual TreeRows
> > on the fly, but with limited success.  Basically if a row's name begins
> > with a " . " then I'd like to hide it, but not necessarily erase it from
> > the TreeView using erase() since I'd like to be able to reverse this
> > action without recreating the entire view.  I was looking around the
> > mailing list archives and I stumbled upon this post:
> >
> > http://marc.theaimsgroup.com/?l=gtkmm&m=109957757907166&w=2
>
> using the cell_data_func, you'd be able to customize the data that
> gets displayed in the particular cell, but I don't think you'd be able
> to hide the row entirely.  GTK makes it easy to selectively hide or
> display certain columns from your model, but I don't know of any easy
> way to show or hide rows from the model.  The only way I can think of
> to hide a row entirely would be by creating a custom TreeModel
> (something I've been experimenting with lately), but there's not a lot
> of documentation about doing that, and it's a bit advanced for
> somebody just learning gtkmm.
>
> If you're up for a challenge, you might try looking through the
> nautilus source code to see how they do it, since nautilus has an
> option for whether to display 'hidden' files.  It's written in GTK+,
> but the basic concepts should be the same for gtkmm.  For all I know,
> they might just rescan the directory each time the option is changed
> (which would be more-or-less equivalent to what you're doing by
> erasing the items from the model), but they might have a more clever
> way as well.
>
> Perhaps somebody else has a better idea, though...
>
> Jonner
I was browsing around the xffm source since I'm using xfce on this 
machine, and xffm (the file manager) also includes the option to hide 
hidden files.  It is a bit easier to browse through since xffm is a 
rather small program as far as file managers are concerned.  I'm still 
trying to get a bearing on the whole thing, but I'll post back if I find 
something useful.

Matt Bragano