How do I bind the enabled binding of a button to whether or not an NSArrayController has a selection?

Question

I want to bind the enabled state of an NSButton to whether or not an NSArrayController has any selected items.

How do I do this?

score 22 · Accepted Answer · edited Aug 17 '11 at 20:26

22

Another option is to bind to selectedObjects.@count

edited Aug 17 '11 at 20:26

Quinn Taylor

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answered Jun 05 '09 at 15:37

sbooth

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That should be selectedObjects.@count I believe – Mike Abdullah Jun 22 '09 at 15:32
Currently, Xcode accepts (and breaks the above into) `selectedObjects` in Controller Key and `@count` in Model Key Path – David Aug 17 '16 at 21:55

score 18 · Answer 2 · answered Jun 04 '09 at 19:17

18

Generally speaking, binding the enabled binding to the canRemove property of the array controller should give you what you want. After all, you can only remove an object if there's one selected.

answered Jun 04 '09 at 19:17

Alex

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At a much later date than written, this does not work. – David Aug 17 '16 at 21:57
This works for me configuring the binding in IB in Xcode 8.2.1. Making sure that only the "Controller Key" is filled out with "canAdd" or "canRemove", there is no model key path or value transformer. – Andrew Sep 29 '17 at 23:11

score 3 · Answer 3 · answered Feb 18 '16 at 09:09

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This is the answer for IB:

If you need to setup the OR relationship with other NSArrayController (or other value), there is the section Enabled 2 , and so on. So, in my case, i have:

answered Feb 18 '16 at 09:09

CheshireKat

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How do I bind the enabled binding of a button to whether or not an NSArrayController has a selection?

3 Answers3