NSTextField and bindings
NSTextField and bindings
- Subject: NSTextField and bindings
- From: Steve Sims <email@hidden>
- Date: Tue, 4 May 2004 11:45:51 -0400
Hi all,
I have an NSTextField in my app and I'm using bindings to hook it up to
my data model. Now it's important that this text field keeps a value,
and is not set to an empty string. With that in mind I wrote a quick
setter method as follows:
- (void)setText:(NSMutableString *)newText {
if ((text != newText) && ([newText length]>0)) {
[text release];
text = [newText copy];
}
}
Now whilst this ensures that within my data model the text field keeps
its value when an empty string is attempted to be entered in the UI the
UI does not reflect this: the text field on screen stays empty.
I tried adding in [self willChangeValueForKey:@"text"]; and [self
didChangeValueForKey:@"text"]; calls at the beginning and end of this
setter (outside the if) since I thought that may force the UI to
update, but it didn't work.
Any suggestions?
Steve
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