From e98e7b8f9195d698c86891aef6eebe2ec0e4079f Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Tue, 25 Nov 2025 21:24:19 -0500
Subject: [PATCH] Add file/directory discriminator.

---
 .../Clock Signal/MachinePicker/MachinePicker.swift    | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/OSBindings/Mac/Clock Signal/MachinePicker/MachinePicker.swift b/OSBindings/Mac/Clock Signal/MachinePicker/MachinePicker.swift
index 737649b25..fb2895c6f 100644
--- a/OSBindings/Mac/Clock Signal/MachinePicker/MachinePicker.swift	
+++ b/OSBindings/Mac/Clock Signal/MachinePicker/MachinePicker.swift	
@@ -551,10 +551,13 @@ class MachinePicker: NSObject, NSTableViewDataSource, NSTableViewDelegate, NSPat
 	}
 
 	func pathControl(_ pathControl: NSPathControl, validateDrop info: any NSDraggingInfo) -> NSDragOperation {
-		// TODO: accept if the pasteboard contains NSURLPboardType or NSFilenamesPboardType,
-		// and if the referenced file is a directory.
-
-		return NSDragOperation.link
+		// Accept only directories.
+		if let url = NSURL(from: info.draggingPasteboard) {
+			if url.hasDirectoryPath {
+				return NSDragOperation.link
+			}
+		}
+		return []
 	}
 
 	func establishPathControl(_ pathControl: NSPathControl, userDefaultsKey: String) {