Qt Override.

def data(self, index, role=Qt.DisplayRole):
        """Qt Override."""
        row = index.row()
        if not index.isValid() or not (0 <= row < len(self.servers)):
            return to_qvariant()

        server = self.servers[row]
        column = index.column()

        if role == Qt.DisplayRole:
            if column == LANGUAGE:
                return to_qvariant(server.language)
            elif column == ADDR:
                text = '{0}:{1}'.format(server.host, server.port)
                return to_qvariant(text)
            elif column == CMD:
                text = '&nbsp;<tt style="color:{0}">{{0}} {{1}}</tt>'
                text = text.format(self.text_color)
                if server.external:
                    text = '&nbsp;<tt>External server</tt>'
                return to_qvariant(text.format(server.cmd, server.args))
        elif role == Qt.TextAlignmentRole:
            return to_qvariant(int(Qt.AlignHCenter | Qt.AlignVCenter))
        return to_qvariant()