[bugs #9487] NSOutlineView reloadItem generates errors

[Alexander Malmberg]

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/**************************************************************************/
[bugs #9487] Latest Modifications:

Changes by: 
                Alexander Malmberg <alexander@malmberg.org>
'Date: 
                Tue 09/21/04 at 23:13 (Europe/Stockholm)

            What     | Removed                   | Added
---------------------------------------------------------------------------
          Resolution | None                      | Fixed
              Status | In Test                   | Closed


------------------ Additional Follow-up Comments ----------------------------
This has been "In test" long enough now. While there may still be issues with 
NSOutlineView, these two issues seem to be fixed.






/**************************************************************************/
[bugs #9487] Full Item Snapshot:

URL: <http://savannah.gnu.org/bugs/?func=detailitem&item_id=9487>
Project: GNUstep
Submitted by: Rob Burns
On: Tue 06/29/04 at 03:06

Category:  Gui/AppKit
Severity:  5 - Average
Item Group:  Change Request
Resolution:  Fixed
Privacy:  Public
Assigned to:  None
Status:  Closed


Summary:  NSOutlineView reloadItem generates errors

Original Submission:  NSoutline reloadItem: generates an "NSNull does not 
respond to setObjectForKey:" error and an "NSInvalidArgumentException: Tried to 
insert nil to arrray" error most (not all) of the times it is called.

Example code for this can be found at 
http://www.eskimo.com/~pburns/rob/misc/NSOutlineView-reloadItem.tar.gz
It's a GSTest bundle.

Follow-up Comments
------------------


-------------------------------------------------------
Date: Tue 09/21/04 at 23:13         By: Alexander Malmberg <alexm>
This has been "In test" long enough now. While there may still be issues with 
NSOutlineView, these two issues seem to be fixed.

-------------------------------------------------------
Date: Sat 07/03/04 at 19:12         By: Rob Burns <rburns>
now, it does redisplay the item being reloaded, but happens to redispaly all 
the other items too. This doesn't seem quite right to me. In any case it works 
for my purposes

Thanks



-------------------------------------------------------
Date: Sat 07/03/04 at 17:51         By: Rob Burns <rburns>
now, it does redisplay the item being reloaded, but happens to redispaly all 
the other items too. This doesn't seem quite right to me. In any case it works 
for my purposes

Thanks



-------------------------------------------------------
Date: Sat 07/03/04 at 16:36         By: Fred Kiefer <FredKiefer>
The specific problem should be fixed now, but investigation did show loads of 
issues in the outline view code. We really should try and find somebody to 
check to whole class.

-------------------------------------------------------
Date: Fri 07/02/04 at 19:23         By: Fred Kiefer <FredKiefer>
Opened again, due to Robs new failing example

-------------------------------------------------------
Date: Thu 07/01/04 at 23:38         By: Rob Burns <rburns>
Thanks, that indeed fixed the problem I was having. Though, I have found 
others. I was expecting reloadItem to redisplay the item as well. This doesn't 
currently happen under GNUstep. 

I modified the test a little bit to check for this too. I also got the test 
running on OSX, and can verify that on OSX, the item is redisplayed. A new one 
is here:

http://www.eskimo.com/~pburns/rob/misc/Testing-20040701.tar.gz

Also, after playing with the test a bit more I found that if you reproduce the 
following steps:

1) open the NSOutlineView test
2) expand the 'wet' item
3) select the 'wet' item
4) check the 'Children' checkbox
5) press the 'Reload Selected Item' button

The contents of the OutlineView will disappear 

-------------------------------------------------------
Date: Thu 07/01/04 at 18:42         By: Fred Kiefer <FredKiefer>
This problem is caused by the inconsistent use of NSNull in NSOutlineView. The 
shared null object is used here for  the key nil in object mappings, but 
sometimes when iterating over the keys the reverse conversion is not applied.
I changed that and the code is now working for me.












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