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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8-80 compliant>
"""
This module contains RestrictBlend context manager.
"""
__all__ = (
"RestrictBlend",
)
import bpy as _bpy
class _RestrictContext:
__slots__ = ()
_real_data = _bpy.data
# safe, the pointer never changes
_real_pref = _bpy.context.preferences
@property
def window_manager(self):
return self._real_data.window_managers[0]
@property
def preferences(self):
return self._real_pref
class _RestrictData:
__slots__ = ()
_context_restrict = _RestrictContext()
_data_restrict = _RestrictData()
class RestrictBlend:
__slots__ = ("context", "data")
def __enter__(self):
self.data = _bpy.data
self.context = _bpy.context
_bpy.data = _data_restrict
_bpy.context = _context_restrict
def __exit__(self, type, value, traceback):
_bpy.data = self.data
_bpy.context = self.context
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