Setup a ComboBox or ComboBoxEntry based on a list of strings.

def combobox_set_model_from_list(cb, items):
    """Setup a ComboBox or ComboBoxEntry based on a list of strings."""
    cb.clear()
    model = gtk.ListStore(str)
    for i in items:
        model.append([i])
    cb.set_model(model)
    if type(cb) == gtk.ComboBoxEntry:
        cb.set_text_column(0)
    elif type(cb) == gtk.ComboBox:
        cell = gtk.CellRendererText()
        cb.pack_start(cell, True)
        cb.add_attribute(cell, 'text', 0)