Fit in Map error when models closed

[Elaine Meng]

The following bug report has been submitted:
Platform:        Darwin-17.7.0-x86_64-i386-64bit
ChimeraX Version: 0.91 (2019-06-29)
Description
Traceback upon "close" after opening map, atomic structure, making molmap, moving atomic structure with translate-selection mouse mode, and starting some tools, as shown in Command History below.  I tried a few times to reproduce this traceback with fewer actions (like just opening the map and structure) but was not successful.  I did reproduce it by doing all the steps again.

** see comment below **

open 5020 format ccp4 fromDatabase emdb
open 1gc1 format mmCIF fromDatabase pdb
rainbow chain
select /G:465
molmap /h,l 8
toolshed show "Segment Map"
toolshed show "Fit in Map"
close


Log:
UCSF ChimeraX version: 0.91 (2019-06-29)  
© 2016-2019 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open 5020 format ccp4 fromDatabase emdb

Opened emd_5020.map, grid size 100,100,100, pixel 4.1, shown at level 1.83,
step 1, values float32  

> open 1gc1 format mmCIF fromDatabase pdb

1gc1 title:  
Hiv-1 GP120 core complexed with CD4 and A neutralizing human antibody [more
info...]  
  
Chain information for 1gc1 #2  
---  
Chain | Description  
C | CD4  
G | envelope protein GP120  
H | antibody 17B  
L | antibody 17B  
  
Non-standard residues in 1gc1 #2  
---  
FUC — α-L-fucose  
NAG — N-acetyl-D-glucosamine  
NDG — 2-(acetylamino)-2-deoxy-A-D-glucopyranose  
  
  

> close

> open 5020 format ccp4 fromDatabase emdb

Opened emd_5020.map, grid size 100,100,100, pixel 4.1, shown at level 1.83,
step 1, values float32  

> open 1gc1 format mmCIF fromDatabase pdb

1gc1 title:  
Hiv-1 GP120 core complexed with CD4 and A neutralizing human antibody [more
info...]  
  
Chain information for 1gc1 #2  
---  
Chain | Description  
C | CD4  
G | envelope protein GP120  
H | antibody 17B  
L | antibody 17B  
  
Non-standard residues in 1gc1 #2  
---  
FUC — α-L-fucose  
NAG — N-acetyl-D-glucosamine  
NDG — 2-(acetylamino)-2-deoxy-A-D-glucopyranose  
  
  

> select /C:152

9 atoms, 8 bonds, 1 model selected  

> ui mousemode rightMode "translate selected models"

> rainbow chains

> close

> open 5020 format ccp4 fromDatabase emdb

Opened emd_5020.map, grid size 100,100,100, pixel 4.1, shown at level 1.83,
step 1, values float32  

> open 1gc1 format mmCIF fromDatabase pdb

1gc1 title:  
Hiv-1 GP120 core complexed with CD4 and A neutralizing human antibody [more
info...]  
  
Chain information for 1gc1 #2  
---  
Chain | Description  
C | CD4  
G | envelope protein GP120  
H | antibody 17B  
L | antibody 17B  
  
Non-standard residues in 1gc1 #2  
---  
FUC — α-L-fucose  
NAG — N-acetyl-D-glucosamine  
NDG — 2-(acetylamino)-2-deoxy-A-D-glucopyranose  
  
  

> rainbow chains

> select clear

> select clear

> select clear

> select clear

> select /G:465

6 atoms, 5 bonds, 1 model selected  

> molmap /h,l 8

> toolshed show "Segment Map"

> toolshed show "Fit in Map"

> close

Traceback (most recent call last):  
File
"/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/triggerset.py", line 130, in invoke  
return self._func(self._name, data)  
File
"/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/ui/widgets/item_chooser.py", line 297, in _items_change  
self.value = (list(self.value_map.keys()) + self._special_items)[0]  
File
"/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/ui/widgets/item_chooser.py", line 262, in value  
or (val is not None and self.value == val):  
File
"/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/ui/widgets/item_chooser.py", line 255, in value  
return self.item_map[text]  
KeyError: '1gc1 #2'  
  
Error processing trigger "remove models": '1gc1 #2':  
KeyError: '1gc1 #2'  
  
File
"/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/ui/widgets/item_chooser.py", line 255, in value  
return self.item_map[text]  
  
See log for complete Python traceback.  
  




OpenGL version: 4.1 NVIDIA-10.32.0 355.11.10.10.40.102
OpenGL renderer: NVIDIA GeForce GTX 675MX OpenGL Engine
OpenGL vendor: NVIDIA Corporation

[Elaine Meng]

Oh, now I see traceback is just because "Fit in Map" tool has trouble removing the closed model from its pulldown menu. Can be reproduced just by opening stuff, starting Fit in Map, and then closing stuff.

[Eric Pettersen]

Fixed.

Auto-selection of "special" items caused self.value to be fetched, which is not a happy time in the middle of a "close models" trigger.