Re: nsformatters and focus
Re: nsformatters and focus
- Subject: Re: nsformatters and focus
- From: Bill Cheeseman <email@hidden>
- Date: Thu, 20 Feb 2003 06:19:34 -0500
My experience is that isPartialStringValid... will always let you leave a
field blank, since leaving a field blank is often desired behavior even
though a non-blank entry must be formatted.
A good solution to prevent the user from leaving the textfield blank is to
implement the textShouldEndEditing: delegate method, and return NO from it
if [([fieldEditor string] isEqualToString:@""]).
on 03-02-19 11:42 PM, Jonathan Jackel at email@hidden wrote:
>
Take a look at NSFormatter's isPartialStringValid... methods. You'll
>
want to override to return NO when the user has not yet typed a good
>
entry. IIRC, the user cannot leave the field until the formatter
>
validates the entry.
>
>
Jonathan
>
>
On Wednesday, February 19, 2003, at 08:19 PM, Francisco Tolmasky wrote:
>
>
> With Cocoa Frameworks formatters (such as date, number, etc.) you are
>
> NOT allowed to leave focus if certain requirements are not met. In my
>
> formatter, I'd like it to not allow the user to to leave focus unless
>
> there is input, for example if he deletes all of "9999" to "", id like
>
> it to force him to input something. How do I do this? (Hopefully
>
> this can be done through the formatter and not through the
>
> nstextfieldcell)
>
>
>
> Francisco Tolmasky
>
> email@hidden
>
> http://users.adelphia.net/~ftolmasky
>
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--
Bill Cheeseman - email@hidden
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