BabyModel is a model class to help create model class easily. Normally, MVC pattern ask us to create a signal structure for Model-View-Controller that don't let Model-View have strong coupling. But, hooking up the signal structure through KVO is a little bit.... not so convenient. Therefore, that comes with this BabyModel for easy to use.
OBModel is a basic class that help you create your own model subclass with desired properties.
OBCollection subclassed from OBModel and provides collection changes monitoring.
Yes. They are all backed up by KVO behind the scene.
// Create your own model class
@interface VGModel : OBModel
@property (nonatomic, strong) NSString *title;
@property (nonatomic, strong) UIImage *backgroundImage;
@end// Start monitor property change in your viewcontroller or elsewhere
VGModel *aModel = [[VGModel alloc] init];
aModel.title = @"Bob";
aModel.backgroundImage = [UIImage imageNamed:@"green.png"];
[aModel addObserver:self forProperty:@"title" withEvent:^(NSString * _Nonnull propertyName, NSDictionary * _Nonnull changes) {
NSLog(@"Change property: %@, changes: %@", propertyName, changes);
}];
[aModel addObserver:self forProperty:@"backgroundImage" withEvent:^(NSString * _Nonnull propertyName, NSDictionary * _Nonnull changes) {
NSLog(@"I got the images: %@", changes);
}];
self.testModel = aModel;