Re: Launched window not activating

FROM : Ken Tozier
DATE : Tue Apr 12 03:51:09 2005

Sorry to keep beating this issue, but there is something fundamentally
wrong somewhere in the following six steps and I'm just not experienced
enough with Cocoa GUI stuff to see it. To me, the algorithm looks fine,
but there is some subtle thing that Cocoa doesn't like.

The problem is that the window generated in step 6.A and displayed in
6.B is never frontmost and can't even be forced to front by clicking on
it. The only way to bring it to front is to put the window load code
inside a thread (which I'm told is bad for GUI stuff) Even when it's
placed in a thread, it doesn't become frontmost without manually
clicking on it.

Anyone see the error?

Thanks

Ken

Sequence of events:
--------------------------------
1. Application opens "main" nib

2. "AppController" instance inside "main" nib initializes it's
"downloader" instance

   - (id) init
   {
       self = [super init];
       if (self)
       {
           downloader        = [[ICADownloader alloc] init];
       }
       
       return self;
   }

3. Downloader instance registers for camera connect events in it's
"init" method


   - (id) init
   {
       self    = [super init];
       if (self)
       {
           [self registerForCameraConnectNotifications];
       }
       
       return self;
   }


4. Time passes

5. User plugs in a camera

6. Downloader receives camera connect notification and performs
following actions:

   A. Creates a new window by loading the "DownloadWindow" nib file using
NSWindowController with an owner of "self".
   B. Displays the window.
   C. Downloads photos to a specified directory.
   D. Closes window.

7. Done/Waits for another camera connect event.


Hierarchically, the location of the window create code is

App
{
    Main Nib
    {
      AppController
      {
          downloader
          {
            handleCameraConnect <- (callback method)
            {
                NSWindowController    *wind
            }
          }
      }
    }
}