1 files changed, 71 insertions, 0 deletions
diff --git a/uitask_darwin.go b/uitask_darwin.go
new file mode 100644
index 0000000..7eecd4f
--- /dev/null
+++ b/uitask_darwin.go
@@ -0,0 +1,71 @@
+// 28 february 2014
+
+package ui
+
+import (
+	"fmt"
+	"unsafe"
+)
+
+// #cgo CFLAGS: -mmacosx-version-min=10.7 -DMACOSX_DEPLOYMENT_TARGET=10.7
+// #cgo LDFLAGS: -mmacosx-version-min=10.7 -lobjc -framework Foundation -framework AppKit
+// /* application compatibilty stuff via https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/cross_development/Configuring/configuring.html, http://www.cocoawithlove.com/2009/09/building-for-earlier-os-versions-in.html, http://opensource.apple.com/source/xnu/xnu-2422.1.72/EXTERNAL_HEADERS/AvailabilityMacros.h (via http://stackoverflow.com/questions/20485797/what-macro-to-use-to-identify-mavericks-osx-10-9-in-c-c-code), and Beelsebob and LookyLuke_ICBM on irc.freenode.net/#macdev */
+// #include "objc_darwin.h"
+import "C"
+
+// the performSelectorOnMainThread: in our uitask functions is told to wait until the action is done before it returns
+// so we're fine keeping this on the Go side since the GC won't collect it from under us
+type uitaskParams struct {
+	window	*Window		// createWindow
+	control	Control		// createWindow
+	show	bool			// createWindow
+}
+
+//export uitask_createWindow
+func uitask_createWindow(data unsafe.Pointer) {
+	uc := (*uitaskParams)(data)
+	uc.window.create(uc.control, uc.show)
+}
+
+func (_uitask) createWindow(w *Window, c Control, s bool) {
+	uc := &uitaskParams{
+		window:	w,
+		control:	c,
+		show:	s,
+	}
+	C.douitask(appDelegate, C.createWindow, unsafe.Pointer(uc))
+}
+
+func uiinit() error {
+	err := initCocoa()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func ui() {
+	// Cocoa must run on the first thread created by the program, so we run our dispatcher on another thread instead
+	go func() {
+		<-Stop
+		// TODO is this function thread-safe?
+		C.breakMainLoop()
+	}()
+
+	C.cocoaMainLoop()
+}
+
+func initCocoa() (err error) {
+	makeAppDelegate()
+	if C.initCocoa(appDelegate) != C.YES {
+		return fmt.Errorf("error setting NSApplication activation policy (basically identifies our program as a separate program; needed for several things, such as Dock icon, application menu, window resizing, etc.) (unknown reason)")
+	}
+	return nil
+}
+
+//export appDelegate_uitask
+func appDelegate_uitask(p unsafe.Pointer) {
+	f := (*func())(unsafe.Pointer(p))
+	(*f)()
+}