NSLayoutManager didCompleteLayout callback & NSFormFeedCharacter
NSLayoutManager didCompleteLayout callback & NSFormFeedCharacter
- Subject: NSLayoutManager didCompleteLayout callback & NSFormFeedCharacter
- From: Philip Dow <email@hidden>
- Date: Mon, 09 May 2011 14:36:29 -0500
I just submitted the following bug report and wanted to post it here as well to see if anyone had a recommended workaround.
NSLayoutManager layoutManager:didCompleteLayoutForTextContainer:atEnd callback is never called with atEnd flag set to YES if last character of text is NSFormFeedCharacter.
Summary:
The NSLayoutManager callback layoutManager:didCompleteLayoutForTextContainer:atEnd: is called as layout is completed for each text container in a multipage view. The atEnd flag is set to YES when the last text container is layed out. This method is never called with the atEnd flag set to YES if the last character in the text is the page break (NSFormFeedCharacter) control character.
This is verifiable on Mac OS 10.6.7 through testing with TextEdit source code that is included in the Xcode distro.
Steps to Reproduce:
Create a multipage text document in TextEdit with text wrapping enabled. Add a page break as the last character in the document and save the document. Next time the document is opened, the layout manager callback never occurs with the atEnd flag set to YES.
Expected Results:
When the last container is layed out, the atEnd flag should be set to YES.
Actual Results:
The didCompleteLayoutForTextContainer is correctly called a number of times for each text container with the atEnd flag set to NO, but it is never finally called with the atEnd flag set to YES for the last text container.
~
I'm hoping someone might have some insight into this or a possible workaround. I have some code that depends on a correct count of the number of layed out pages and that count is determined when layout is completed, as indicated by the atEnd flag set to YES.
~Phil_______________________________________________
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