How can I replicate a user created table?

This is a part of the iTunes smart playlist creation window; for my application I need to create something very similar to this:

The changes I'll be making would be the column that says artist would be integers (but still a pop up button), same with the second column. The third column would be text input like in the picture. I would like to keep the functionality of the "+" and "-" buttons but I don't have much use for the "..." button. Is there any easy way to recreate this? I need the user to be able to add as many or few fields as necessary.开发者_如何学Go Thanks in advance!

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If you don't need to support 10.4, take a look at NSPredicateEditor. It should allow you to easily recreate iTunes' interface with the changes you describe. http://nvie.com/posts/nspredicateeditor-tutorial/ may be useful to help you get started.