From: akbarhome <akbarhome@...>
Date: 2006-11-02T00:40:21+09:00
Subject: Re: Gtk::FileFilter

WoodHacker wrote:
> Can anyone explain to me how the Gtk::FileFilter work in a
> FileChooserDialog?    If I do the following, it works:
>
>      filter.add_pattern("*.rb")
>
> However, if I try:    filter.add_pattern("*.{rb, txt}") it does not
> work.   (As does nothing else I try)
>
> And in the cases where it works (i.e. "*.rb") it gets a dropdown on the
> FileChooser that's labeled "Untitled filter". Pressing it does nothing.
>    Obviously, I should be able to set the filter to rows labeled "All
> Files, Ruby Files, Text Files", etc., with a default of say Ruby files
> to start with.
>
> Thanks in advanced...
>
> Bill

Haven't use Ruby Gtk, but I have use pygtk. Because python is ruby
cousin, maybe my example in pygtk is useful to you.
    # image filter
    images_type = ('rgb', 'gif', 'pbm', 'pgm', 'ppm', 'tiff', 'rast',
'xbm', 'jpeg', 'jpg', 'bmp', 'png')
    imagefilter = gtk.FileFilter()
    for image_type in images_type:
      imagefilter.add_pattern('*.' + image_type)
    imagefilter.set_name(_("Images"))
    filechooser_dialog.add_filter(imagefilter)

    # all files filter
    allfilter = gtk.FileFilter()
    allfilter.add_pattern("*")
    allfilter.set_name(_("All files"))
    filechooser_dialog.add_filter(allfilter)

My guess is you have to do once for each pattern:
 filter.add_pattern("*.rb")
 filter.add_pattern("*.txt")

My understanding is you want a filter for ruby files and text files.
The case will be different if you want to use ruby files filter and
text files filter. Notice the different.