Hello,
I'm trying to create a custom NSPredicateEditorRowTemplate subclass
that has a single view, an NSPopUpButton with a single item and am
having some trouble. Basically what I'm trying to do is create a
predicate like the one in Apple Mail when creating a rule for handling
e-mail in which you can select "Any Message".
In my subclass I have:
- (id)initWithView:(NSView *)view
{
if (self = [super initWithLeftExpressions:[NSArray
arrayWithObject:[NSExpression
expressionForConstantValue:@"kAnyCalendar"]]
rightExpressionAttributeType:NSBooleanAttributeType
modifier:NSDirectPredicateModifier
operators:[NSArray
arrayWithObject:[NSNumber
numberWithInteger:NSEqualToPredicateOperatorType]]
options:0]) {
self.parentView = view;
}
}
- (NSArray *)templateViews {
return [self.parentView subviews]; // This returns my single
NSPopUpButton instance
}
In my controller I have an outlet variable named predicateView set to
a NSView in my NIB that has a single NSPopUpButton instance, and I'm
configuring the NSPredicateEditor as follows:
[predicateEditor setRowTemplates:[NSArray arrayWithObject:
[[AnyCalendarTemplate alloc] initWithView:predicateView]]];
When I call [predicateEditor addRow:self] an exception is thrown and
my application crashes:
2008-05-19 14:48:51.614 PredicateDebugger[15062:10b] *** Terminating
app due to uncaught exception 'NSInternalInconsistencyException',
reason: 'In <NSPredicateEditor: 0x1023aa0>, different number of items
(1) than predicate template views (0) for template
<AnyCalendarTemplate 0x105a7c0: ["kAnyCalendar"] [4]
NSBooleanAttributeType>'
I've tried different settings for the NSPredicateEditor in IB, and
also tried returning more than one view or type of view in my custom
row template, all without luck.
Does anyone have any sample code or suggestions to help me get this
working?
Thanks,
Steve
--
Steven Huey Software - http://www.stevenhuey.com
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