# SPDX-License-Identifier: LGPL-2.1-or-later

# ***************************************************************************
# *   Copyright (c) 2024 Mario Passaglia <mpassaglia[at]cbc.uba.ar>         *
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__title__ = "FreeCAD FEM base element object"
__author__ = "Mario Passaglia"
__url__ = "https://www.freecad.org"

## @package base_femelement
#  \ingroup FEM
#  \brief base object for FEM Element Features

from FreeCAD import Base
from . import base_fempythonobject

_PropHelper = base_fempythonobject._PropHelper


class BaseFemElement(base_fempythonobject.BaseFemPythonObject):

    BaseType = "Fem::BaseFemElement"

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

        for prop in self._get_properties():
            prop.add_to_object(obj)

    def _get_properties(self):
        prop = []

        prop.append(
            _PropHelper(
                type="App::PropertyLinkSubListGlobal",
                name="References",
                group="Element",
                doc="List of element shapes",
                value=[],
            )
        )

        return prop

    def onDocumentRestored(self, obj):
        # update old project with new properties
        for prop in self._get_properties():
            try:
                obj.getPropertyByName(prop.name)
            except Base.PropertyError:
                prop.add_to_object(obj)

            if prop.name == "References":
                # change References to App::PropertyLinkSubListGlobal
                prop.handle_change_type(obj, old_type="App::PropertyLinkSubList")
