A Boolean that controls how the panel responds to ubiquitous documents that aren't yet fully downloaded locally.
- macOS 10.10+
When the value of this property is
true, then the receiver will disallow opening non-local ubiquitous files. If the user attempts to select a non-local file, the panel will trigger or re-prioritize downloading for that file so that it can be opened as soon as possible. When the value of this property is
false, then the panel will allow the user to select and open non-local files, giving your application responsibility for downloading and reporting progress. The default value is
true, except for applications linked against the OS X v10.9 SDK or earlier that have adopted iCloud by specifying a ubiquitous container identifier entitlement.
To provide the ideal user experience, you should set this property to
false and download the file’s contents (with
NSFile) and show downloading progress (with
NSMetadata) in the context of your application, instead of relying on the Open panel to do it.