Add Support for Drag and Drop to SwiftUI-based macOS App

There are 2 types of drag and drop I'm interested in for SimplyDiskSweeper:

• Drag and drop folders onto the app icon in the Dock
• Drag and drop folders onto the app window

It's easy to implement both in SwiftUI.

DRAG AND DROP FOLDERS ONTO THE APP ICON IN THE DOCK

ContentView() .onOpenURL { url in handleDropOnDockAppIcon(url: url) }

If you use XcodeGen, add this to project.yml:

targets: : #settings, dependencies, scheme, entitlements etc info: path: /Info.plist properties: CFBundleDocumentTypes: - CFBundleTypeRole: Viewer LSHandlerRank: Default LSItemContentTypes: - public.folder

otherwise amend Info.plist accordingly.

DRAG AND DROP FOLDERS ONTO THE APP WINDOW

ContentView() .onDrop(of: ["public.file-url"], isTargeted: nil) { providers -> Bool in providers.first?.loadDataRepresentation(forTypeIdentifier: "public.file-url", completionHandler: { data, _ in if let data = data, let path = String(data: data, encoding: .utf8), let url = URL(string: path as String) { handleDropInWindow(url: url) } }) return true }