# ***************************************************************************
# *   Copyright (c) 2020 Bernd Hahnebach <bernd@bimstatik.org>              *
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# *   This file is part of the FreeCAD CAx development system.              *
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__title__ = "FreeCAD FEM constraint tie task panel for the document object"
__author__ = "Bernd Hahnebach"
__url__ = "https://www.freecad.org"

## @package task_constraint_tie
#  \ingroup FEM
#  \brief task panel for constraint tie object

from PySide import QtCore
from PySide import QtGui

import FreeCAD
import FreeCADGui

from femguiutils import selection_widgets
from . import base_femtaskpanel


class _TaskPanel(base_femtaskpanel._BaseTaskPanel):
    """
    The TaskPanel for editing References property of FemConstraintTie objects
    """

    def __init__(self, obj):
        super().__init__(obj)

        # parameter widget
        self.parameterWidget = FreeCADGui.PySideUic.loadUi(
            FreeCAD.getHomePath() + "Mod/Fem/Resources/ui/ConstraintTie.ui"
        )
        QtCore.QObject.connect(
            self.parameterWidget.spb_tolerance,
            QtCore.SIGNAL("valueChanged(Base::Quantity)"),
            self.tolerance_changed,
        )
        QtCore.QObject.connect(
            self.parameterWidget.ckb_adjust, QtCore.SIGNAL("toggled(bool)"), self.adjust_changed
        )
        self.init_parameter_widget()

        # geometry selection widget
        self.selectionWidget = selection_widgets.GeometryElementsSelection(
            obj.References, ["Edge", "Face"], False, False
        )

        # form made from param and selection widget
        self.form = [self.selectionWidget, self.parameterWidget]

    def accept(self):
        # check values
        items = len(self.selectionWidget.references)
        FreeCAD.Console.PrintMessage(
            f"Task panel: found references: {items}\n{self.selectionWidget.references}\n"
        )

        if items != 2:
            msgBox = QtGui.QMessageBox()
            msgBox.setIcon(QtGui.QMessageBox.Question)
            msgBox.setText(
                f"Constraint Tie requires exactly two faces\n\nfound references: {items}"
            )
            msgBox.setWindowTitle("FreeCAD FEM Constraint Tie")
            retryButton = msgBox.addButton(QtGui.QMessageBox.Retry)
            ignoreButton = msgBox.addButton(QtGui.QMessageBox.Ignore)
            msgBox.exec_()

            if msgBox.clickedButton() == retryButton:
                return False
            elif msgBox.clickedButton() == ignoreButton:
                pass
        self.obj.Tolerance = self.tolerance
        self.obj.Adjust = self.adjust
        self.obj.References = self.selectionWidget.references
        self.selectionWidget.finish_selection()
        return super().accept()

    def reject(self):
        self.selectionWidget.finish_selection()
        return super().reject()

    def init_parameter_widget(self):
        self.tolerance = self.obj.Tolerance
        self.adjust = self.obj.Adjust
        FreeCADGui.ExpressionBinding(self.parameterWidget.spb_tolerance).bind(self.obj, "Tolerance")
        self.parameterWidget.spb_tolerance.setProperty("value", self.tolerance)
        self.parameterWidget.ckb_adjust.setChecked(self.adjust)

    def tolerance_changed(self, base_quantity_value):
        self.tolerance = base_quantity_value

    def adjust_changed(self, bool_value):
        self.adjust = bool_value