Apple silicon support (#3)

Replace use of progrium/macdriver with cgo to allow Apple Silicon builds

app_darwin.go

@@ -10,53 +10,18 @@
 package unison
 
 import (
-	"strings"
 	"time"
 
-	"github.com/progrium/macdriver/objc"
 	"github.com/richardwilkes/unison/internal/ns"
 )
 
 func platformEarlyInit() {
-	if openURLsCallback != nil {
-		appDelegate := ns.App().GetDelegate()
-		cls := objc.NewClass("UnisonAppDelegate", "NSObject")
-		cls.AddMethod("applicationShouldTerminate:", func(_, p1 objc.Object) uint {
-			return uint(appDelegate.Send("applicationShouldTerminte:", p1).Uint())
-		})
-		cls.AddMethod("applicationDidChangeScreenParameters:", func(_, p1 objc.Object) {
-			appDelegate.Send("applicationDidChangeScreenParameters:", p1)
-		})
-		cls.AddMethod("applicationWillFinishLaunching:", func(_, p1 objc.Object) {
-			appDelegate.Send("applicationWillFinishLaunching:", p1)
-		})
-		cls.AddMethod("applicationDidFinishLaunching:", func(_, p1 objc.Object) {
-			appDelegate.Send("applicationDidFinishLaunching:", p1)
-		})
-		cls.AddMethod("applicationDidHide:", func(_, p1 objc.Object) {
-			appDelegate.Send("applicationDidHide:", p1)
-		})
-		// All of the methods above this point are just pass-throughs to glfw. If glfw adds more methods, corresponding
-		// additions should be made here.
-		cls.AddMethod("application:openURLs:", func(_, app, urls objc.Object) {
-			if data := ns.URLArrayToStringSlice(ns.Array{Object: urls}); len(data) != 0 {
-				openURLsCallback(data)
-			}
-		})
-		ns.App().SetDelegate(cls.Alloc().Init())
-	}
+	ns.InstallAppDelegate(openURLsCallback)
 }
 
 func platformLateInit() {
-	cls := objc.NewClass("ThemeDelegate", "NSObject")
-	cls.AddMethod("themeChanged:", func(objc.Object) { themeChanged() })
-	delegate := cls.Alloc().Init()
-	def := ns.DefaultCenter()
-	selector := objc.Sel("themeChanged:")
-	def.AddObserver(delegate, selector, "AppleInterfaceThemeChangedNotification")
-	def.AddObserver(delegate, selector, "AppleColorPreferencesChangedNotification")
-
-	ns.App().SetActivationPolicy(ns.ActivationPolicyRegular)
+	ns.InstallSystemThemeChangedCallback(themeChanged)
+	ns.SetActivationPolicy(ns.ActivationPolicyRegular)
 }
 
 func platformBeep() {
@@ -68,7 +33,7 @@ func platformIsDarkModeTrackingPossible() bool {
 }
 
 func platformIsDarkModeEnabled() bool {
-	return strings.Contains(strings.ToLower(ns.StandardUserDefaults().StringForKey("AppleInterfaceStyle")), "dark")
+	return ns.IsDarkModeEnabled()
 }
 
 func platformDoubleClickInterval() time.Duration {

go.mod

@@ -5,7 +5,6 @@ go 1.17
 require (
 	github.com/go-gl/gl v0.0.0-20211210172815-726fda9656d6
 	github.com/go-gl/glfw/v3.3/glfw v0.0.0-20211213063430-748e38ca8aec
-	github.com/progrium/macdriver v0.2.0
 	github.com/richardwilkes/toolbox v1.54.0
 	github.com/stretchr/testify v1.7.0
 	golang.org/x/image v0.0.0-20211028202545-6944b10bf410

internal/ns/callbacks_darwin.go

@@ -0,0 +1,67 @@
+// Copyright ©2022 by Richard A. Wilkes. All rights reserved.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, version 2.0. If a copy of the MPL was not distributed with
+// this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+//
+// This Source Code Form is "Incompatible With Secondary Licenses", as
+// defined by the Mozilla Public License, version 2.0.
+
+package ns
+
+/*
+#import <Cocoa/Cocoa.h>
+
+typedef CFTypeRef NSMenuRef;
+typedef CFTypeRef NSMenuItemRef;
+*/
+import "C"
+
+var (
+	menuUpdaters               = make(map[Menu]func(Menu))
+	menuItemValidators         = make(map[MenuItem]func(item MenuItem) bool)
+	menuItemHandlers           = make(map[MenuItem]func(item MenuItem))
+	openURLsCallback           func([]string)
+	systemThemeChangedCallback func()
+)
+
+//export updateMenuCallback
+func updateMenuCallback(m C.NSMenuRef) {
+	menu := Menu(m)
+	if updater, ok := menuUpdaters[menu]; ok && updater != nil {
+		updater(menu)
+	}
+}
+
+//export menuItemValidateCallback
+func menuItemValidateCallback(mi C.NSMenuItemRef) bool {
+	item := MenuItem(mi)
+	if validator, ok := menuItemValidators[item]; ok && validator != nil {
+		return validator(item)
+	}
+	return true
+}
+
+//export menuItemHandleCallback
+func menuItemHandleCallback(mi C.NSMenuItemRef) {
+	item := MenuItem(mi)
+	if handler, ok := menuItemHandlers[item]; ok && handler != nil {
+		handler(item)
+	}
+}
+
+//export appOpenURLsCallback
+func appOpenURLsCallback(a C.CFArrayRef) {
+	if openURLsCallback != nil {
+		if urls := Array(a).ArrayOfURLToStringSlice(); len(urls) > 0 {
+			openURLsCallback(urls)
+		}
+	}
+}
+
+//export themeChangedCallback
+func themeChangedCallback() {
+	if systemThemeChangedCallback != nil {
+		systemThemeChangedCallback()
+	}
+}