Re: Ephemeral Changes

FROM : Graham Cox
DATE : Tue Mar 25 23:12:32 2008

There may be a simpler way, but this is what occurred to me when I 
read this:

Subclass NSTextView and override -changeFont: -changeAttributes: and 
any other "ephemeral" method. Turn off the undo manager using -
disableUndoRegistration, call super, then turn it back on again.

Be warned I haven't tried it, so may be way off.

------
S.O.S.



On 26 Mar 2008, at 4:48 am, Gerriet M. Denkmann wrote:
>
> I have a document based Cocoa editor, which handles simple text 
> files (setRichText: NO).
> It handles undo and font changes.
>
> But the files are just plain text files; no font information gets 
> stored.
>
> So I would like that the document does NOT get dirty 
> (isDocumentEdited) if only the font has been changed.
>
> This would imply that we have two kinds of changes: "real" changes 
> (like typing, cut and paste of text, etc.) and "ephemeral" changes 
> (e.g. change of font).
> Both are recorded by the NSUndoManager, but only "real" changes make 
> the document dirty.
>
> How could this be done in 10.4.11 ?
>
> Kind regards,
>
> Gerriet.
>
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