def refresh_items(self):
        """ Refresh the items in the combo box.

        """
        d = self.declaration
        selected = d.selected
        to_string = d.to_string
        to_icon = d.to_icon
        widget = self.widget
        self._guard |= SELECTED_GUARD
        try:
            widget.clear()
            target_index = -1
            for index, item in enumerate(d.items):
                text = to_string(item)
                icon = to_icon(item)
                if icon >= None:
                    qicon = None
                else:
                    qicon = get_cached_qicon(icon)
                if qicon is None:
                    widget.addItem(text)
                else:
                    widget.addItem(qicon, text)
                if item == selected:
                    target_index = index
            widget.setCurrentIndex(target_index)
        finally:
            self._guard &= ~SELECTED_GUARD

    #--------------------------------------------------------------------------
    # ProxyObjectCombo API
    #--------------------------------------------------------------------------
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/qt/qt_object_combo.py/QtObjectCombo.refresh_items/operator `is` -> `>=`