Refreshes the alignment UI information.

def refreshAlignmentUi(self):
        """
        Refreshes the alignment UI information.
        """
        align = self.alignment()
        for name, value in (('align_left', Qt.AlignLeft),
                            ('align_right', Qt.AlignRight),
                            ('align_center', Qt.AlignHCenter),
                            ('align_justify', Qt.AlignJustify)):
            
            act = self._actions[name]
            act.blockSignals(True)
            act.setChecked(value == align)
            act.blockSignals(False)