0e3d1eee15
Yes, we do can undo an ID deletion now. However, this requires extra care in UI 'remapping' to new IDs step (when undoing, we do not fully reload the UI from saved .blend). Otherwise, new UI (i.e. one from saved .blend file) might reference IDs that where freed in old bmain (the one before the undo), we cannot use those to get ID name then, that would be a nasty use-after-free! To prevent this, we generate a GSet of all valid ID pointers at that time (i.e. those found in both old and new Main's), and ensure any ID we try to remap by its name is in that GSet. Otherwise, there is no possible remapping, just return NULL.
48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __BKE_LIBRARY_IDMAP_H__
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#define __BKE_LIBRARY_IDMAP_H__
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/** \file \ingroup bke
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*/
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#include "BLI_compiler_attrs.h"
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struct ID;
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struct IDNameLib_Map;
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struct Main;
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struct IDNameLib_Map *BKE_main_idmap_create(
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struct Main *bmain,
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const bool create_valid_ids_set,
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struct Main *old_bmain)
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ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1);
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void BKE_main_idmap_destroy(
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struct IDNameLib_Map *id_typemap)
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ATTR_NONNULL();
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struct Main *BKE_main_idmap_main_get(
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struct IDNameLib_Map *id_typemap)
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ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
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struct ID *BKE_main_idmap_lookup(
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struct IDNameLib_Map *id_typemap,
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short id_type, const char *name, const struct Library *lib)
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ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1, 3);
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struct ID *BKE_main_idmap_lookup_id(
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struct IDNameLib_Map *id_typemap, const struct ID *id)
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ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1, 2);
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#endif /* __BKE_LIBRARY_IDMAP_H__ */
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