I have an application which I am trying to update to use the new pasteboard protocols, NSDragSession, etc. The new version requires Lion. Drag/drop has been an absolute nightmare. The main windows have to handle a large number of drop types, plus there is a separate library with its own coredata database which must also be able to store and provide a large number of types. The pasteboard handlers are monsters, which I have tried to parse out into more manageable chunks. My first level approach it to try to identify pasteboard objects which conform to the new protocols or have been placed into an NSPasteboardItem. The latter is being successfully used for private data types. (Can¹t use the read/write object protocols because these are managed objects and require a custom unarchiver. Yes, I¹ve filed an enhancement request about this.)
Text handling has been especially difficult. I try to drag in text from MSWord (2008) or TextEdit, and have all kinds of issues. Apparently MS not only posts an RTF, but an image or a PDF of the text. ³canReadObjectForClasses² determines it has an NSImage class and I end up with a text image, not the text, which I would like to get or convert to an NSAttributedString. Somehow, it gets recognized as an NSImage object and attempts to use it as such. Although the application is for Lion, obviously, I still want it to work with pre-Lion apps. That means the application has to handle everything, old and new, and somehow come up with the best handler for whatever is on the pasteboard. It ain¹t easy. It might help if there were a pasteboard guide somewhere with suggestions and examples for how to handle complex pasteboards using both new and old techniques. If anyone has some words of wisdom on how to better attack this, they would be greatly appreciated. _______________________________________________ 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
