My web-browser app makes menu items with paired submenus for each day that has WebHistoryItem instances. It’s done with a custom coordinator object that publishes a KVO-compliant array, each element a menu item with a submenu. I made another coordinator object to handle Today’s history items. I set it’s source-menu attribute to one of the day menu-items, and it publishes two KVO-compliant arrays. The first array holds copies of the source menu’s items up to a limit, the second array holds copies of the remaining menu items. (The limit is also an attribute.) Note that these menu items arrays are read-only from the outside.
Right now, the menu item that holds the submenu where the overflow menu items go is always visible. I was thinking of controlling its visibility with Cocoa Bindings. I select the menu item in the Interface Builder part of Xcode, go to the Bindings Inspector, reveal the Hidden attribute settings, and set the binding to my app’s delegate. Under the Model Key Path, I put “self.my2ndCoordinator.overflowArray”. Now, that’s an array and I need a Boolean. I tried “.count” and “.@count” at the end, and neither worked. How do I get that part to work? Even then, I still need to stick in the “> 0” part somewhere (unless Bindings does the zero vs. non-zero to Boolean conversion C does). What about that? Or do I have to go indirect and use something like an NSArrayController? — Daryle Walker Mac, Internet, and Video Game Junkie darylew AT mac DOT com _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
