cocoa-bindings

I'm doing a simple test program using bindings in Swift on OSX. Having an NSTableView, NSArrayController and a model class I try to hook them up together, but without success! The build compiles but gives instantly this error: Thread 1: EXC_BAD_ACCESS(code=1, address = 0x0) Code looks like this: model class: import Foundation class Name { var firstName = "Brook" var lastName = "Brooklyn" } view controller: import Cocoa class ViewController: NSViewController { dynamic var names = [Name]() // serves as the content for Array-Controller override func viewDidLoad() { super.viewDidLoad() // populate

Apple introduced ordered to-many-relationships in Core Data in Lion. I created an entity named TreeNode with an 1:1-object-relation, a 1:1-parent-relation and an ordered to-many-relationship children. Then I have an NSTreeController with the children key path set to TreeNode.children. Running the application only shows first level elements. So children is not working. Since children is an ordered to-many-relationship, the corresponding class has an NSOrderedSet children. I added a custom method - (NSArray *) childrenArray { return [children array]; } to TreeNode which works. I could not find

How does one bind an NSArrayController's content to the entities in an ordered to-many relationship? I have an unordered to-many relationship in my Core Data model, and an NSArrayController whose Content Set is bound to that relationship from the parent entity. This works fine, the data is accessible from the NSArrayController, no problem. I decided during development that it would be better to allow users to manually reorder these child objects, so I changed the relationship to an ordered one. Now, when my NSArrayController is being created from my nib, the following error is presented:

I have an NSView subclass which has property which I want to be bindable. I've implemented the following in the subclass: myView.h: @property (readwrite, retain) NSArray *representedObjects; myView.m: @synthesize representedObjects; +(void)initialize { [self exposeBinding: @"representedObjects"]; } -(void)bind:(NSString *)binding toObject:(id)observableController withKeyPath:(NSString *)keyPath options:(NSDictionary *)options { if ([binding isEqualToString:@"representedObjects"]) { [observableController addObserver: self forKeyPath:@"arrangedObjects" options:NSKeyValueChangeNewKey context:nil]

What I want to accomplish seems like it should be fairly straightforward. I have placed a sample project here . I have a NSArrayController filled with an array of NSDictionaries. [[self controller] addObject:@{ @"name" : @"itemA", @"part" : @"partA" }]; [[self controller] addObject:@{ @"name" : @"itemB", @"part" : @"partB" }]; [[self controller] addObject:@{ @"name" : @"itemC", @"part" : @"partC" }]; I am populating a NSPopupButton with the items in this array based on the 'name' key. This is easily accomplished with the following bindings I would then like to populate a NSTextField with the

I have an NSView subclass which is bound to the arrangedObjects of an NSArrayController . When the array has an item inserted or removed the view is notified. How do I get it to be notified if a model stored in the array has an attribute changed? Do I need to add my view as an observer to every (relevant) attribute of every item added to the array? When an item is added to or removed from the array I am notified via observeValueForKeyPath:ofObject:change:context: in my NSView subclass. I am not notified of changes to the models stored in the array but I could, every time I am notified of an

I'm starting a project which I think would benefit from bindings (I've got a source list table, several browser views, etc), but I think it would also be quite doable, and perhaps more understandable, without them. From my limited experience I've found bindings to be difficult to troubleshoot and very "magic" (e.g. it's difficult to insert logging anywhere to figure out where stuff is breaking, everything either works or it doesn't). Is this just my inexperience talking (in which case I could sit down and spend some time just working on my understanding of bindings and expect things to start