def update_ui(self):
        if self.target_poses:
            count_target_poses = len(self.target_poses)
        else:
            count_target_poses = 1
        self.progress_bar.setMaximum(count_target_poses)
        self.progress_bar.setValue(self.current_target_pose + 1)
        self.pose_number_lbl.setText('{}/{}'.format(
            self.current_target_pose + 1, count_target_poses))

        if self.state == CalibrationMovementsGUI.BAD_PLAN:
            self.bad_plan_lbl.setText('BAD plan!! Don\'t do it!!!!')
            self.bad_plan_lbl.setStyleSheet('QLabel { background-color : red}')
        elif self.state == CalibrationMovementsGUI.GOOD_PLAN:
            self.bad_plan_lbl.setText('Good plan')
            self.bad_plan_lbl.setStyleSheet(
                'QLabel { background-color : green}')
        else:
            self.bad_plan_lbl.setText('No plan yet')
            self.bad_plan_lbl.setStyleSheet('')

        if self.state == CalibrationMovementsGUI.NOT_INITED_YET:
            self.guide_lbl.setText(
                'Bring the robot to a plausible position and check if it is a suitable starting pose'
            )
        elif self.state == CalibrationMovementsGUI.CHECKING_STARTING_POSITION:
            self.guide_lbl.setText(
                'Checking if the robot can translate and rotate in all directions from the current pose'
            )
        elif self.state == CalibrationMovementsGUI.BAD_STARTING_POSITION:
            self.guide_lbl.setText('Cannot calibrate from current position')
        elif self.state == CalibrationMovementsGUI.GOOD_STARTING_POSITION:
            self.guide_lbl.setText('Ready to start: click on next pose')
        elif self.state == CalibrationMovementsGUI.GOOD_PLAN:
            self.guide_lbl.setText(
                'The plan seems good: press execute to move the robot')
        elif self.state == CalibrationMovementsGUI.BAD_PLAN:
            self.guide_lbl.setText('Planning failed: try again')
        elif self.state == CalibrationMovementsGUI.MOVED_TO_POSE:
            self.guide_lbl.setText(
                'Pose reached: take a sample and go on to next pose')

        can_plan = self.state == CalibrationMovementsGUI.GOOD_STARTING_POSITION
        self.plan_btn.setEnabled(can_plan)
        can_move = self.state == CalibrationMovementsGUI.GOOD_PLAN
        self.execute_btn.setEnabled(can_move)
        QCoreApplication.processEvents()