Combo box data validation question
Combo box data validation question
- Subject: Combo box data validation question
- From: Josh Anon <email@hidden>
- Date: Fri, 21 Jun 2002 09:36:18 -0700
So I have this nifty little nib with a popup menu and a combo box. The popup menu contains various fields, each of which will take a different type of data (e.g. there's a "Name" item which will take a NSString and a "Date" item which will take a NSDate, etc.). Then, I have a combo box so that either the user can type in a value (e.g. you'd type in a name) or select a value from a list if it's appropriate (e.g. if the field we're working with takes a boolean).
What I'd like to be able to do is take the value the user types in and check and see if it's the right type--did the user actually type in a date or did he type in a number. My first thought was NSFormatter, but that doesn't seem appropriate. Second thought was to call -objectValue: on the combo box and see if -isKindOfClass:neededClass. However, -objectValue: is always returning a string; I'm guessing this is because a combo box is a subclass of a text field, and anything the user types can be a string.
Any thoughts on how to do the type of data validation I'm looking for? Didn't see this in the archives :)
Thanks,
Josh
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