Open Radar

 
Summary:

Notifications registered for NSWorkspace's notification center, using the block syntax do not fire.

Notifications using the old-school syntax work fine, and if they exist, cause the block-syntax blocks to trigger as well.



Steps to Reproduce:

Register a notification handler with:

  center = [[NSWorkspace sharedWorkspace] notificationCenter];
    [center addObserverForName: nil
                        object: nil
                         queue: nil
                    usingBlock: ^(NSNotification *notification) {
                        NSLog (@"+++++++ WORKSPACE??? %@ -> %@", notification.name, notification.userInfo);
                    }];


Expected Results:

A flurry of notifications


Actual Results:

nothing


Regression:

If I register a notification handler with the old-school syntax, it works great.  In fact, the block-based version starts working.


Notes:

A sample project is attached.


(OpenRadar folks - here's the function in question)


- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    NSNotificationCenter *center;
   
#if 0
    center = [[NSWorkspace sharedWorkspace]
              notificationCenter]; 
    
    [center addObserver: self
               selector: @selector(observeWorkspaceStuff:)
                   name: nil
                 object: nil];
#endif
    
    center = [[NSWorkspace sharedWorkspace] notificationCenter];
    [center addObserverForName: nil
                        object: nil
                         queue: nil
                    usingBlock: ^(NSNotification *notification) {
                        NSLog (@"+++++++ WORKSPACE??? %@ -> %@", notification.name, notification.userInfo);
                    }];

}

Run it as-is, juggle between apps, no notifications show at all.  Change the #if 0  to #if 1  and re-run, and juggle between apps.  Now *both* notifications fire.