i would like to use a subclass of NSFormatter with a NSTokenField.
i've discovered that the partial string passed to
-isPartialStringValid:proposedSelectedRange:originalString:originalSelectedRange:errorDescription:
consists of zero or more unicode object replacement characters
(\ufffc) as "place holders" and the text for the token currently
being edited (where the place holder characters represent other
tokens before or after the token being edited), this is undocumented
and thus i'm concerned about making this assumption. however, if i do
use this assumption, i can get this method to do what i want.
but... i haven't been able to figure out what to return (directly or
by reference) from any of the following methods:
- (NSAttributedString *)attributedStringForObjectValue:(id)anObject
withDefaultAttributes:(NSDictionary *)attributes
- (NSString *)editingStringForObjectValue:(id)anObject
- (BOOL)getObjectValue:(id *)anObject forString:(NSString *)string
errorDescription:(NSString **)error
i have the following 2 main problems (and a few other minor problems,
which probably stem from these 2):
1) i can't get a field that has more than one token to display
properly when double clicked (to be edited)
2) if i attempt to add a new token to a field that already has one or
more tokens, instead of adding the token, it replaces any/all
existing tokens with the new one
anyone know if it is possible to use a custom formatter with
NSTokenField? if so, could you possibly please give me some pointers
(to code or documentation) or advice?
thanx,
ken
ps. i've aleady searched the archives and haven't found any relevant info
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