> On Sep 16, 2014, at 4:48 PM, Jerry Krinock <je...@ieee.org> wrote:
> 
> 
> On 2014 Sep 16, at 15:23, Kyle Sluder <k...@ksluder.com> wrote:
> 
>> I'd try wrapping things in an NSAnimationContext with 
>> allowsImplicitAnimation=NO. Though I'm not sure where you would have the 
>> opportunity to wrap the built-in expand behavior.
> 
> Yes, I’ve never understood “graphics contexts” and its new friend 
> NSAnimationContext.  They seem like these magic singletons that just exist in 
> the ether.  Anyhow, I tried doing this…
> 
>    [[NSAnimationContext currentContext] setAllowsImplicitAnimation:NO] ;
> 
> both in -applicationDidFinishLaunching and in 
> -outlineView:numberOfChildrenOfItem:.  The latter is about the last thing 
> that happens before the data source becomes deluged with messages on all 
> items.  There was no effect.
> 
> I also looked at the NSTableViewAnimationOptions stuff suggested by Jens, but 
> the only place to plug that in is in the -insertRows… and -removeRows… 
> methods, and the documentation indicates that these options are all about 
> view-based tables.
> 
> Finally, I did a video capture on the animation so I could look at it 
> frame-by-frame to see what was going on.  Interestingly, when there are 1000 
> rows to be expanded but only 10 will fit in the window, the animation starts 
> by drawing the tenth item at the top, then moves it down, and then the other 
> nine progressively do the same.  So, the animation should not be a cause for 
> fetching the bottom 990 items.
> 
> Conclusion: I don’t think this has anything to do with animation.
> 
> * * *
> 
> Weird that here we are with the Apple Watch and Swift, and old NSOutlineView 
> still doesn’t work as it should.

Have you logged a bug on this issue? It will not likely get fixed unless you 
report it.

corbin


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