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KVO notifications and threads

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KVO notifications and threads

Subject: KVO notifications and threads
From: Jerry Isdale <email@hidden>
Date: Fri, 11 Jul 2008 09:30:07 -0700

I have an application whose data model (classes, shared Instances, etc) gets updated by various threads for calculations, network comms, etc. Some of the application's Views use binding and KVO. For example an NSTextField may get bound to SharedInstance.currentLattitude

It the property gets updated using KVO compliant code, on what thread is the NSTextField updated?

Possible answers include:
* thread that invokes the set method
* MainThread - because all UI updates should happen there.

Perhaps the KVO means that the View gets marked as needing an update in next update cycle, and thus we have a combination of these two answers: * invoking thread marks the View for update * MainThread does the update in its next graphics update cycle

Jerry Isdale
email@hidden

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