#--------------------- streams/model data accesss ---------------------------

    # traverse category TreeModel to set current, expand parent nodes
    def select_current(self, name):
        log.UI("reselect .current category in treelist:", name)
        model = self.gtk_cat.get_model()
           # [Gtk3] Warning: g_object_ref_sink: assertion 'object->ref_count >= 1' failed
           # ERROR:../../gi/pygobject.c:688:pygobject_register_wrapper: assertion failed: (gself->obj->ref_count >= 1)
        iter = model.get_iter_first()
        self.iter_cats(name, model, iter)

    # iterate over children to find current category        
    def iter_cats(self, name, model, iter):
        while iter:
            val = model.get_value(iter, 0)

        if not self.current:
            log.STAT(self.module, "→ first_show(); use first category as current =", self.current)
            self.current = self.str_from_struct(self.categories) or None

        # put selection/cursor on last position
        if True:
            uikit.do(self.select_current, self.current)
            #uikit.do(lambda:self.gtk_list.get_selection().select_path(self.shown))

        # Show current category in any case
        log.UI(self.module, "→ first_show(); station list → load(", self.current, ")")
        self.load(self.current)
            
        # Invoke only once
        self.shown = 55555

        # if it's a short list of categories, there's probably subfolders
        if len(self.categories) < 20:
            self.gtk_cat.expand_all()
            
        # Select last .current or any first element
        if self.current:
            self.select_current(self.current)
            uikit.do(self.select_current, self.current)
            #self.currentcat()
        #else: self.gtk_cat.get_selection().select_path("0") #set_cursor

            

    
    # Insert/append new station rows - used by importing/drag'n'drop plugins