From 4c9fc452b6a2053f708617e1c95abe44199e6615 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Sun, 21 Jan 2024 17:07:24 -0800
Subject: [PATCH] macos: register that we accept/send text types for services

---
 macos/Sources/App/macOS/AppDelegate.swift     |  5 ++-
 .../Sources/Ghostty/SurfaceView_AppKit.swift  | 39 +++++++++++++++++++
 2 files changed, 42 insertions(+), 2 deletions(-)

diff --git a/macos/Sources/App/macOS/AppDelegate.swift b/macos/Sources/App/macOS/AppDelegate.swift
index f4dd9f1cb..d3d3e1f4b 100644
--- a/macos/Sources/App/macOS/AppDelegate.swift
+++ b/macos/Sources/App/macOS/AppDelegate.swift
@@ -109,9 +109,10 @@ class AppDelegate: NSObject,
         // Initial config loading
         configDidReload(ghostty)
         
-        // Register our service provider. This must happen after everything
-        // else is initialized.
+        // Register our service provider. This must happen after everything is initialized.
         NSApp.servicesProvider = ServiceProvider()
+        
+        // This registers the Ghostty => Services menu to exist.
         NSApp.servicesMenu = menuServices
 
         // Configure user notifications
diff --git a/macos/Sources/Ghostty/SurfaceView_AppKit.swift b/macos/Sources/Ghostty/SurfaceView_AppKit.swift
index fb1915fc1..1938ffecd 100644
--- a/macos/Sources/Ghostty/SurfaceView_AppKit.swift
+++ b/macos/Sources/Ghostty/SurfaceView_AppKit.swift
@@ -953,3 +953,42 @@ extension Ghostty.SurfaceView: NSTextInputClient {
         print("SEL: \(selector)")
     }
 }
+
+// MARK: Services
+
+// https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/SysServices/Articles/using.html
+extension Ghostty.SurfaceView: NSServicesMenuRequestor {
+    override func validRequestor(
+        forSendType sendType: NSPasteboard.PasteboardType?,
+        returnType: NSPasteboard.PasteboardType?
+    ) -> Any? {
+        // Types that we accept sent to us
+        let accepted: [NSPasteboard.PasteboardType] = [.string, .init("public.utf8-plain-text")]
+        
+        // We can always receive the accepted types
+        if (returnType == nil || accepted.contains(returnType!)) {
+            return self
+        }
+        
+        // If we have a selection we can send the accepted types too
+        // TODO selection
+        if (sendType == nil || accepted.contains(sendType!)) {
+            return self
+        }
+        
+        return super.validRequestor(forSendType: sendType, returnType: returnType)
+    }
+    
+    func writeSelection(
+        to pboard: NSPasteboard,
+        types: [NSPasteboard.PasteboardType]
+    ) -> Bool {
+        // TODO
+        return false
+    }
+    
+    func readSelection(from pboard: NSPasteboard) -> Bool {
+        // TODO
+        return false
+    }
+}