On 03/07/2009, at 12:26 PM, Tom wrote:
Hi everyone,
I'm either doing something wrong, or I've found a bug in
NSPredicateEditor.
Whenever I use setObjectValue: on the NSPredicateEditor, it displays
the new predicate, but if I change a couple of the operators (is,
contains, begins with, etc) the text fields on the rows disappear.
Screenshot: http://www.tomdalling.com/wp-content/Picture-1.png
Demo project: http://www.tomdalling.com/wp-content/PredicateEditorBug.zip
Here is the relevant code:
-(IBAction) setPredicateEditorObjectValue:(id)sender
{
NSPredicate* single = [NSPredicate predicateWithFormat:@"name ==
'test'"];
NSMutableArray* subpredicates = [NSMutableArray array];
[subpredicates addObject:[[single copy] autorelease]];
[subpredicates addObject:[[single copy] autorelease]];
[subpredicates addObject:[[single copy] autorelease]];
[subpredicates addObject:[[single copy] autorelease]];
NSPredicate* compound = [NSCompoundPredicate
orPredicateWithSubpredicates:subpredicates];
[m_predicateEditor setObjectValue:compound];
}
Am I doing something wrong?
--Tom
For anyone having the same problem, here is the workaround I've
discovered. It's not the most elegant solution, but it works.
1. Set the NSPredicateEditor's target/action to an IBAction on your
controller
2. Put this code in the controller's IBAction method:
NSPredicate* objectValue = [[[m_predEditor objectValue] retain]
autorelease];
[m_predEditor setObjectValue:nil];
[m_predEditor setObjectValue:objectValue];
--Tom
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