NSTokenFieldの補完データをコアデータで管理する。

gistfile2.txt

コアデータとNSTokenField
NSTokenFieldの補完データをコアデータで管理する。

NSTokenField_delegate.m

#pragma mark#### NSTokenField Delegate ####
- (NSArray *)tokenField:(NSTokenField *)tokenField
completionsForSubstring:(NSString *)substring
		   indexOfToken:(NSInteger)tokenIndex
	indexOfSelectedItem:(NSInteger *)selectedIndex
{
	NSManagedObjectContext *moc = [appDelegate managedObjectContext];
	NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name BEGINSWITH[cd] %@", substring];
	NSEntityDescription *entry = [NSEntityDescription entityForName:@"VoiceActor"
											 inManagedObjectContext:moc];
	NSFetchRequest *fetch = [[[NSFetchRequest alloc] init] autorelease];
	[fetch setEntity:entry];
	[fetch setPredicate:predicate];
	
	NSError *error = nil;
	NSArray *objects = [moc executeFetchRequest:fetch error:&error];
	if(!objects) {
		if(error) {
			NSLog(@"fail fetch reason -> %@", error);
		}
	}
	
	NSMutableArray *result = [NSMutableArray array];
	for(id obj in objects) {
		[result addObject:[obj valueForKey:@"name"]];
	}
	
	return result;
}

- (void)registerVoiceActor:(NSTokenField *)tokenField
{
	id array = [tokenField objectValue];
	if(![array isKindOfClass:[NSArray class]]) return;
	
	NSManagedObjectContext *moc = [appDelegate managedObjectContext];
	NSEntityDescription *entry = [NSEntityDescription entityForName:@"VoiceActor"
											 inManagedObjectContext:moc];
	NSFetchRequest *fetch = [[[NSFetchRequest alloc] init] autorelease];
	[fetch setEntity:entry];
	
	for(id token in array) {
		NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name LIKE[cd] %@", token];
		[fetch setPredicate:predicate];
		
		NSError *error = nil;
		NSUInteger count = [moc countForFetchRequest:fetch error:&error];
		if(error) {
			NSLog(@"fail fetch reason -> %@", error);
			continue;
		}
		if(count == 0) {
			id obj = [NSEntityDescription insertNewObjectForEntityForName:@"VoiceActor" inManagedObjectContext:moc];
			[obj setValue:token forKey:@"name"];
		}
	}
}
- (BOOL)control:(id)control textShouldEndEditing:(NSText *)fieldEditor
{
	if([control tag] == 2000) {
		[self registerVoiceActor:control];
	}
	
	return YES;
}