Paul, You're quite right. I commented out the call to shouldChangeTextInRange: and my code still does what I want. Thanks for pointing this out.
I'll have a look at the documentation on methods for bracketing multiple changes to the text (after I get my head around efficiently creating triangular matrices). Boyd On Jun 7, 2010, at 9:30 AM, Paul Sanders wrote: > > /** ADDED CODE **/ > > NSMutableDictionary* typingAttributes = [[myTextView typingAttributes] > > mutableCopy]; > > [typingAttributes setObject:paraStyle forKey:NSParagraphStyleAttributeName]; > > [myTextView setTypingAttributes:typingAttributes]; > > NSRange rangeOfChange = NSMakeRange(0, [[myTextView string] length]); > > [myTextView shouldChangeTextInRange:rangeOfChange replacementString:nil]; > > [[myTextView textStorage] setAttributes:typingAttributes > > range:rangeOfChange]; > > [myTextView didChangeText]; > > [typingAttributes release]; > > // end added code > > It's probably harmless but I don't think it's appropriate to call > shouldChangeTextInRange: here as this is not a 'user-initiated editing > change', see > > http://developer.apple.com/mac/library/documentation/cocoa/reference/ApplicationKit/Classes/NSTextView_Class/Reference/Reference.html#//apple_ref/doc/uid/20000373-BBCCCCBE > > You should call didChangeText though, so that the appropriate notifications > are sent. didChangeText doesn't get called for you when you modify the > NSTextStorage object programmatically. > > Just in case you missed it, you might also like to know about the > beginEditing and endEditing methods of NSMutableAttributedString (from which > NSTextStorage derives). These can be used to 'bracket' multiple changes to > the text and so doing improves efficiency. This is covered here: > > http://developer.apple.com/mac/library/documentation/cocoa/conceptual/TextEditing/Tasks/BatchEditing.html > > Again, for what you are doing here this is not really relevant; the code you > posted should work just fine. But if you are making a number of changes at > the same time it is worth calling these methods. > > Regards, > > Paul Sanders. > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
