def _cursor_position_changed(self):
        cursor = self._text_edit.textCursor()
        if cursor.position() <= self._start_position:
            self.hide()
        else:
            position, commas = self._find_parenthesis(self._start_position + 1)
            if position != -1:
                self.hide()
Updates the tip based on user cursor movement.
dataset/ETHPy150Open enthought/pyface/pyface/ui/qt4/console/call_tip_widget.py/CallTipWidget._cursor_position_changed