Hi, I have a NSCollectionView in which selection changes are observed by a viewcontroller object, that will in turn change its view according to the nature of the selection change.
(Think of it as a image browser or something similar) In some circumstances however, I want to alert the user before such a change takes place, so I determine the circumstance and if applicable display a sheet using NSAlert. (For instance, if the current image has changed, I want to alert the user he is about to loose the changes he made to the image). If the user acknowledges the change, everything is fine and the viewcontroller changes its view as desired (eg. display the next image). BUT, if the user cancels the action, I would also like to cancel the selection change in the nscollectionview. Here, I'm getting in a catch-22 situation because restoring the 'previous' selection of the nscollectionview, will again trigger the observing viewcontroller, etc. Does anyone have some suggestions about how to solve this in an elegant way? Thanks, -- Luc Van Bogaert _______________________________________________ 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
