code: def add_ordered_combo_item(
          combo, text, data=None, count_selected_features=None, icon=None):
      if count_selected_features is not None:
          text += ' (' + tr('{count} selected features').format(
              count=count_selected_features) + ')'
      size = combo.count()
      for combo_index in range(0, size):
          item_text = combo.itemText(combo_index)
          if cmp(text.lower(), item_text.lower()) < 0:
              if icon:
                  combo.insertItem(combo_index, icon, text, data)
              else:
                  combo.insertItem(combo_index, text, data)
              return
      if icon:
          combo.insertItem(size, icon, text, data)
      else:
          combo.insertItem(size, text, data)