I have an NSPopupButton whose menu I need to change based on a model
property. I'm observing selection.property of the relevant
NSArrayController to be notified when the menu needs to change. I need
to alternate between a provided menu and a content array provided by
another array controller.
I have it working with the code below it just seems awfully long
winded to accomplish something seemingly simple, I was hoping someone
could take a look at it and point out where I could improve my
implementation.
Thanks,
Keith
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDictionary *)change context:(void *)context {
if ([[keyPath lastKeyPathComponent]
isEqualToString:KDAlarmTypeKey]) {
NSString *alarmNameSubpath = nil;
if ([[object valueForKeyPath:keyPath] integerValue] == ITUNES) {
alarmNameSubpath = KDAlarmNameKey;
[advancedAlarmNameButton unbind:NSContentBinding];
[advancedAlarmNameButton unbind:NSContentValuesBinding];
[advancedAlarmNameButton removeAllItems];
[advancedAlarmNameButton setMenu:[[sourceMenu copy]
autorelease]];
} else {
alarmNameSubpath = KDBackupAlarmNameKey;
[advancedAlarmNameButton removeAllItems];
[advancedAlarmNameButton bind:NSContentBinding
toObject:backupAlarmsController withKeyPath:@"arrangedObjects"
options:nil];
[advancedAlarmNameButton bind:NSContentValuesBinding
toObject:backupAlarmsController withKeyPath:@"arrangedObjects.key"
options:nil];
}
[advancedAlarmNameButton bind:NSSelectedValueBinding
toObject:calendarController withKeyPath:[NSString
keyPathForComponents:@"selection", alarmNameSubpath, nil] options:nil];
// This is a dirty hack, setting the menu/binding the selected value
seems to disable the selected menu item!?
[[advancedAlarmNameButton selectedItem] setEnabled:YES];
} else [super observeValueForKeyPath:keyPath ofObject:object
change:change context:context];
}
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