Custom sort descriptor compare method

gistfile1.txt

@interface NSString (GroupComparison)

- (NSComparisonResult)groupCompare:(NSString *)otherGroup;

@end


@implementation NSString (GroupComparison)

- (NSComparisonResult)groupCompare:(NSString *)otherGroup {
	NSArray *orderedGroups = [NSArray arrayWithObjects:HSGeneralShortcutGroup, HSChangeSpaceWithoutDirectionShortcutGroup, HSChangeSpaceWithDirectionShortcutGroup, HSIndividualSpaceShortcutGroup, HSAddRemoveSpacesShortcutGroup, nil];

	NSUInteger selfGroupIndex  = [orderedGroups indexOfObject:self];
	NSUInteger otherGroupIndex = [orderedGroups indexOfObject:otherGroup];

	if (selfGroupIndex < otherGroupIndex) {
		return NSOrderedAscending;
	}	else if (selfGroupIndex > otherGroupIndex) {
		return NSOrderedDescending;
	} else {
		return NSOrderedSame;
	}
}

@end