Is there a standard Cocoa design pattern or idiom to have an object
find out when another object has been destroyed? In PowerPlant, I'd
use LBroadcaster and LListener, with the listener listening for
msg_BroadcasterDied.
Here's my specific situation. I have several controllers that can
create tasks, using an NSTask wrapper based on the Moriarty sample.
When a task completes, it sends a message to the controller that
created it. If the controller dies before the task completes, I'd
like to abort the task. But I'd prefer not to have the controllers
explicitly keep track of all their tasks.
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