In UIKit UIProgressView has an observedProgress property. If you set the observedProgress property on a UIProgressView, it will automatically update its appearance when you make changes to the NSProgress object. On macOS (in AppKit at least) NSProgressIndicator does not have an equivalent API. I created a simple category on NSProgressIndicator that adds an observedProgress property on NSProgressIndicator. The source code is available on Github here.
File Cabinet Pro version 7.6 has been released for macOS.
-Added the option to have File Cabinet Pro automatically close the main window on outside mouse click in Settings.
-Fixed bug that caused three finger dragging not to work for users that have a Force Touch trackpad and also have three finger dragging enabled in System Preferences.