# ***************************************************************************
# *   Copyright (c) 2020 Bernd Hahnebach <bernd@bimstatik.org>              *
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__title__ = "FreeCAD FEM constraint section print task panel for the document object"
__author__ = "Bernd Hahnebach"
__url__ = "https://www.freecad.org"

## @package task_constraint_sectionprint
#  \ingroup FEM
#  \brief task panel for constraint section print object

from PySide import QtGui

import FreeCAD
import FreeCADGui

from femguiutils import selection_widgets


# TODO uses the old style Add button, move to the new style. See constraint fixed
class _TaskPanel:
    """
    The TaskPanel for editing References property of ConstraintSectionPrint objects
    """

    def __init__(self, obj):

        self.obj = obj

        # parameter widget
        self.parameterWidget = FreeCADGui.PySideUic.loadUi(
            FreeCAD.getHomePath() + "Mod/Fem/Resources/ui/ConstraintSectionPrint.ui"
        )

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

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

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

        if items != 1:
            msgBox = QtGui.QMessageBox()
            msgBox.setIcon(QtGui.QMessageBox.Question)
            msgBox.setText(
                "Constraint SectionPrint requires exactly one face\n\nfound references: {}"
                .format(items)
            )
            msgBox.setWindowTitle("FreeCAD FEM Constraint SectionPrint")
            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.References = self.selectionWidget.references
        self.recompute_and_set_back_all()
        return True

    def reject(self):
        self.recompute_and_set_back_all()
        return True

    def recompute_and_set_back_all(self):
        doc = FreeCADGui.getDocument(self.obj.Document)
        doc.Document.recompute()
        self.selectionWidget.setback_listobj_visibility()
        if self.selectionWidget.sel_server:
            FreeCADGui.Selection.removeObserver(self.selectionWidget.sel_server)
        doc.resetEdit()