mac/apphub: fix opening several files at once via Finder or App icon

when dropping more than one file on the App icon or opening via Finder
the open(urls:) event might not pass all files at once in the array, but
may consecutivly call open(urls:) for each of the files or batched in
several arrays.

to fix this append any file passed to the open(urls:) event within 0.1
seconds of each other to the current playlist. the first event uses the
default behaviour.

2 files changed, 12 insertions, 6 deletions

diff --git a/osdep/mac/app_hub.swift b/osdep/mac/app_hub.swift
index 44373b17a6..e86e707dd3 100644
--- a/osdep/mac/app_hub.swift
+++ b/osdep/mac/app_hub.swift
@@ -38,6 +38,7 @@ class AppHub: NSObject {
 
     let MPV_PROTOCOL: String = "mpv://"
     var isApplication: Bool { get { NSApp is Application } }
+    var openEvents: Int = 0
 
     private override init() {
         input = InputHelper()
@@ -106,8 +107,10 @@ class AppHub: NSObject {
         }.sorted { (strL: String, strR: String) -> Bool in
             return strL.localizedStandardCompare(strR) == .orderedAscending
         }
-        log.verbose("Opening dropped files: \(files)")
-        input.open(files: files)
+        log.verbose("\(openEvents > 0 ? "Appending" : "Opening") dropped files: \(files)")
+        input.open(files: files, append: openEvents > 0)
+        openEvents += 1
+        DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) { self.openEvents -= 1 }
     }
 
     func getIcon() -> NSImage {
diff --git a/osdep/mac/input_helper.swift b/osdep/mac/input_helper.swift
index 52a5404f0a..0e4ec1f55c 100644
--- a/osdep/mac/input_helper.swift
+++ b/osdep/mac/input_helper.swift
@@ -230,14 +230,17 @@ class InputHelper: NSObject {
         return Int32(buttonMapping[button] ?? SWIFT_MBTN9 + Int32(button - 5));
     }
 
-    @objc func open(files: [String]) {
+    @objc func open(files: [String], append: Bool = false) {
         lock.withLock {
             guard let input = input else { return }
             if (option?.vo.drag_and_drop ?? -1) == -2 { return }
 
-            var action = NSEvent.modifierFlags.contains(.shift) ? DND_APPEND : DND_REPLACE
-            if (option?.vo.drag_and_drop ?? -1) >= 0  {
-                action = mp_dnd_action(UInt32(option?.vo.drag_and_drop ?? Int32(DND_REPLACE.rawValue)))
+            var action = DND_APPEND
+            if !append {
+                action = NSEvent.modifierFlags.contains(.shift) ? DND_APPEND : DND_REPLACE
+                if (option?.vo.drag_and_drop ?? -1) >= 0  {
+                    action = mp_dnd_action(UInt32(option?.vo.drag_and_drop ?? Int32(DND_REPLACE.rawValue)))
+                }
             }
 
             let filesClean = files.map{ $0.hasPrefix("file:///.file/id=") ? (URL(string: $0)?.path ?? $0) : $0 }