Question

I have GUI application with gtk.Treeview component. It’s model is set to gtk.Treestore, which I fill with a hierarchical structure. Everything is working fine – the treeview is what I expect it to be.

Now I’d like to filter the leaf nodes to contain only a given string. I tried creating model filter like this:

 self.modelfilter = treestore.filter_new()
 self.modelfilter.set_visible_func(self.visible_cb, self.txt)

and define filtering function like the one below (self.txt is the text i’m filtering):

 def visible_cb(self, model, iter, data):
    return self.txt.lower() in model.get_value(iter, 0).lower()

Unfortunately this approach is not a good one because filtering is done on all nodes, and not only leafs.

Is there an elegant solution for this problem in GTK?

Answer 1

I’ve never used the toolkit, but after browsing through the api docs… wouldn’t the following work?

def visible_cb(self, model, iter, data):
    return model.iter_has_child(iter) or data.lower() in model.get_value(iter, 0).lower()

Not sure why you’re passing self.txt to set_visible_func and not using the corresponding data argument to visible_cb.