541e84076a
A module for gathering code related to visibility automation and the like. Contains DepGraphTools.py and TempoVis.py, to be withdrawn from Part/AttachmentEditor. Also: changes to TempoVis: * keep TempoVis from from raising (TempoVis is non-essential functionality, so breaking execution of unsuspecting routines that use it seems like a bad idea. * implement saving/restoring camera (Unfortunately, I failed to implement nice animated restoration.) * almost proper support of saving to file (I still couldn't figure out a way to restore reference to document and viewer. So, falling to using active ones instead (might cause bugs).)
38 lines
2.2 KiB
Python
38 lines
2.2 KiB
Python
#/***************************************************************************
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# * Copyright (c) Victor Titov (DeepSOIC) *
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# * (vv.titov@gmail.com) 2016 *
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# * *
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# * This file is part of the FreeCAD CAx development system. *
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# * *
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# * This library is free software; you can redistribute it and/or *
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# * modify it under the terms of the GNU Library General Public *
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# * License as published by the Free Software Foundation; either *
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# * version 2 of the License, or (at your option) any later version. *
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# * *
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# * This library is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Library General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with this library; see the file COPYING.LIB. If not, *
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# * write to the Free Software Foundation, Inc., 59 Temple Place, *
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# * Suite 330, Boston, MA 02111-1307, USA *
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# * *
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# ***************************************************************************/
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# adapted from http://stackoverflow.com/a/3603824/6285007
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class FrozenClass(object):
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'''FrozenClass: prevents adding new attributes to class outside of __init__'''
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__isfrozen = False
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def __setattr__(self, key, value):
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if self.__isfrozen and not hasattr(self, key):
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raise TypeError( "{cls} has no attribute {attr}".format(cls= self.__class__.__name__, attr= key) )
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object.__setattr__(self, key, value)
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def _freeze(self):
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self.__isfrozen = True
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def _unfreeze(self):
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self.__isfrozen = False
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