First step to handle missing libs/datablocks when reading a file.
authorBastien Montagne <montagne29@wanadoo.fr>
Tue, 20 Oct 2015 12:44:57 +0000 (14:44 +0200)
committerBastien Montagne <montagne29@wanadoo.fr>
Tue, 20 Oct 2015 12:44:57 +0000 (14:44 +0200)
commite5916187e808c1c22229589d103f4de4d4411b5b
treed2424f858d51a976d21d2e9339f7d53aa9ddeee4
parentdcb56d79a87966d93fe0509e64ab51eb90c1d486
First step to handle missing libs/datablocks when reading a file.

Idea is, instead of ignoring completely missing linked datablocks, to
create void placeholders for them.

That way, you can work on your file, save it, and find again your missing data once
lib becomes available again. Or you can edit missing lib's path (in Outliner),
save and reload the file, and you are done.

Also, Outliner now shows broken libraries (and placeholders) with a 'broken lib' icon.

Future plans are also to be able to relocate missing libs and reload them at runtime.

Code notes:
    - Placeholder ID is just a regular datablock of same type as expected linked one,
      with 'default' data, and a LIB_MISSING bitflag set.
    - To allow creation of such datablocks, creation of datablocks in BKE was split in two step:
        + Allocation of memory itself.
        + Setting of all internal data to default values.

See also the design task (T43351).

Reviewed by @campbellbarton, thanks a bunch!

Differential Revision: https://developer.blender.org/D1394
38 files changed:
source/blender/blenkernel/BKE_brush.h
source/blender/blenkernel/BKE_camera.h
source/blender/blenkernel/BKE_curve.h
source/blender/blenkernel/BKE_font.h
source/blender/blenkernel/BKE_lamp.h
source/blender/blenkernel/BKE_lattice.h
source/blender/blenkernel/BKE_library.h
source/blender/blenkernel/BKE_linestyle.h
source/blender/blenkernel/BKE_material.h
source/blender/blenkernel/BKE_mball.h
source/blender/blenkernel/BKE_mesh.h
source/blender/blenkernel/BKE_node.h
source/blender/blenkernel/BKE_object.h
source/blender/blenkernel/BKE_scene.h
source/blender/blenkernel/BKE_speaker.h
source/blender/blenkernel/BKE_text.h
source/blender/blenkernel/BKE_world.h
source/blender/blenkernel/intern/brush.c
source/blender/blenkernel/intern/camera.c
source/blender/blenkernel/intern/curve.c
source/blender/blenkernel/intern/font.c
source/blender/blenkernel/intern/lamp.c
source/blender/blenkernel/intern/lattice.c
source/blender/blenkernel/intern/library.c
source/blender/blenkernel/intern/linestyle.c
source/blender/blenkernel/intern/material.c
source/blender/blenkernel/intern/mball.c
source/blender/blenkernel/intern/mesh.c
source/blender/blenkernel/intern/node.c
source/blender/blenkernel/intern/object.c
source/blender/blenkernel/intern/scene.c
source/blender/blenkernel/intern/speaker.c
source/blender/blenkernel/intern/text.c
source/blender/blenkernel/intern/texture.c
source/blender/blenkernel/intern/world.c
source/blender/blenloader/intern/readfile.c
source/blender/editors/space_outliner/outliner_draw.c
source/blender/makesdna/DNA_ID.h