Re: accessing/setting file name for NSSavePanel

[Wolfgang Lux]

Hi Riccardo,

> I was already using setRequirtedFileType. But as you write, the  
> extension is not shown automatically. Furthermore two things  
> confuse: the first call to the change extension won't actually  
> change it..., the second yes.

-setRequiredFileType: at present changes the extension of the file  
name only if it matches the current required extension (or more  
generally one of the allowed extensions). If the name's current  
extension is different it will not change. So if you have a file name  
ending with a wrong extension, then call -setRequiredFileType: with  
the name's current extension and then call -setRequiredFileType:  
again it would change. In all other cases it shouldn't change. This  
may be confusing, but I think this was the behavior on OS X when I  
last touched the NSSavePanel code. On the other hand, Apple's stance  
on multiple file name extensions has changed over time, so it may no  
longer match the current behavior.

> Thus when just opening a file with a certain extension, trying to  
> save it with another file type would try to add a second extension.  
> Mac warns about that. But the new extension wasn't been shown.

I agree that a warning would be very useful here. If I find time,  
I'll try to add it.

> SO my solution is to first remove the file extension of the file.  
> That way either it gets automatically (not shown, but set  
> correctly) or at a change it will be shown.

If you want the correct extension to be shown initially, just replace  
the file name's current extension by the one of the file type  
selected initially in your accessory view. In that case you should  
also see the extension changing when you select a different type from  
the menu.

> I think maybe not totally straight, but that is how it is set up on  
> the mac. Now I hope my code works on GNUstep.


I'm quite confident that it does work on GNUstep, too.

Wolfgang