Is it a good pattern that no objects should know more than what it needs to know?

Posted by Jim Thio on Programmers See other posts from Programmers or by Jim Thio
Published on 2012-05-30T15:54:32Z Indexed on 2012/05/30 16:59 UTC
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programming-practices

I am implementing a viewController class. The view controller class got NSNotification when the Grabbing class start or finish updating.

I have 2 choices.

I can make the grabbing class to provide a public read only property so all other classes can know whether it is still uploading.

Or I can let view Controller to listen to 2 different events. Start updating and finish updating events.

The truth is the viewController do need to know whether the grabbing class is still updating or not at any other time.

So I am thinking of creating 2 events would be a better way to go.

Actually, what do you think>?

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