Re: NSLayoutManagers
Re: NSLayoutManagers
- Subject: Re: NSLayoutManagers
- From: Brian Webster <email@hidden>
- Date: Fri, 9 Aug 2002 14:40:44 -0500
My first inclination is that something is going awry in the way
you're setting up your text system hierarchy. Like perhaps
you're calling -[NSLayoutManager setTextStorage:] instead of
-[NSLayoutManager replaceTextStorage:] or something like that.
Could you post the code where you do your setup?
On Friday, August 9, 2002, at 02:09 PM, cocoa-dev-
email@hidden wrote:
I have some questions about the relationship between
NSTestStorage and NSLayoutManagers. I have a pretty basic text
editor in which I've implemented a concrete sub-class of
NSTextStorage. In order to keep the coloring of the text up to
date, I have chosen to send an
invalidateDisplayForCharacterRange: message to the
layoutmanager(s) from within the text storage. This seems
pretty straight forward, as I just call [self layoutManagers]
to create an array of layout managers. My first inclination
was to place that in a for loop and send the message to every
layout manager in the array. For some reason, however, the
array is getting an invalid member, which is causing a run time
error because "NSSubTextStorage" (which is NOT my subclass)
does not respond to invalidateDisplayForCharacterRange. My
answer to this is to simply send the message to the first
layout manager. Does anyone know of any problems that might
arise from just sending it to the first member of the array? !
I don't have multiple layouts in my view, so I shouldn't
actually have to worry about multiple layout managers, but the
Cocoa text system is so cryptic that I'm never confident that
it won't try and pull something on me behind the scenes ;).
Also, does anyone have any clue why I'd be getting an invalid
member in my layout manager array?
--
Brian Webster
email@hidden
http://homepage.mac.com/bwebster
_______________________________________________
cocoa-dev mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/cocoa-dev
Do not post admin requests to the list. They will be ignored.