As discussed previously on this list I am using the data source methods of NSOutlineView to display the contents of two separate NSArrayControllers. When an item is selected I use outlineViewSelectionDidChange: to manually update the selection of the appropriate array controller and deselect all items in the other array controller (i.e. I pass an empty index set to setSelectionIndexes).
I would like a toolbar item to only be enabled when an item in the first controller is selected so I tried binding it's Enabled property to selectedobjec...@count and then canRemove. With either binding when the selection changes I see the button flicker as though it is being disabled and then reenabled but it never stays disabled. I verified that empty selections are allowed. I am observing changes to the outline view's selectionIndex and I can verify that even though [[myArrayController selectedObjects] count] == 0, the item is not [staying?] disabled. Using the "No Selection Placeholder" value doesn't make a difference either. Out of curiosity/desparation I even tried the inverse (enabling it when an object from the other array controller is selected) and two different complements (disabling it when an object from the other array controller is selected AND disabling it when an abject from this controller is not selected). No matter what I tried it would only flicker when I was expecting it to stop being enabled. Am I missing something obvious? Regards, Matt P.S. The following two threads <rhetorical>(from quite some time ago - is Leopard REALLY that old?)</rhetorical> seem to discuss something similar but neither post was answered. http://www.cocoabuilder.com/archive/message/cocoa/2007/1/6/176732 http://www.cocoabuilder.com/archive/message/cocoa/2007/12/28/195544 _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
