c.set_current_name(fn)
            fn = ""
        for fname,ftype in formats:
            f = gtk.FileFilter()
            f.set_name(fname)
            f.add_pattern(ftype)
            c.add_filter(f)
        # Yes, that's how to retrieve signals for changed filter selections
        try:
            filterbox = c.get_children()[0].get_children()[0]
            filterbox.connect("notify::filter", lambda *w: uikit.save_file_filterchange(c))
        except: pass
        
        # Filter handlers don't work either.

        # Display and wait
        if c.run():
            fn = c.get_filename()  # return filaname
        c.destroy()
        return fn

    # Callback for changed FileFilter, updates current filename extension
    @staticmethod
    def save_file_filterchange(c):
        fn, ext = c.get_filename(), c.get_filter().get_name()
        if fn and ext:
            fn = os.path.basename(fn)
            c.set_current_name(re.sub(r"\.(m3u|pls|xspf|jspf|asx|json|smil|wpl)$", ext, fn))
        
    
    
    
    # pass updates from another thread, ensures that it is called just once
    @staticmethod
    def do(lambda_func):
        gobject.idle_add(lambda: lambda_func() and False)