put cocoa ui in a package

ui/cocoa/EventListener.h

@@ -1,5 +1,5 @@
 #import <Cocoa/Cocoa.h>
-#import "ui_darwin.h"
+#import "ui.h"
 
 @protocol EventListener
 - (void) serverDidSetRoot:(NSString *)path;

ui/cocoa/RequestHistory.h

@@ -1,5 +1,5 @@
 #import <Cocoa/Cocoa.h>
-#import "ui_darwin.h"
+#import "ui.h"
 
 @interface RequestHistory : NSObject <NSTableViewDataSource>
 - (void) addRequestItem:(RequestMeta *)meta;

ui/cocoa/RequestHistoryItem.h

@@ -1,5 +1,5 @@
 #import <Cocoa/Cocoa.h>
-#import "ui_darwin.h"
+#import "ui.h"
 
 @interface RequestHistoryItem : NSObject
 

ui/cocoa/ui.go

@@ -0,0 +1,79 @@
+package cocoa
+
+import (
+	"log"
+
+	"github.com/jordanorelli/dws/events"
+)
+
+/*
+#cgo CFLAGS: -x objective-c
+#cgo LDFLAGS: -framework Cocoa
+#include <stdlib.h>
+#include "ui.h"
+*/
+import "C"
+
+var instance *ui
+
+type ui struct {
+	in  chan events.BackgroundEvent
+	out chan events.UserEvent
+}
+
+func Desktop() *ui {
+	if instance != nil {
+		return instance
+	}
+	log.Println("Creating new Cocoa UI")
+	C.ui_init()
+	instance = new(ui)
+	return instance
+}
+
+func (ui *ui) Run(out chan events.UserEvent, in chan events.BackgroundEvent) error {
+	log.Println("Running Desktop UI")
+	ui.in = in
+	ui.out = out
+	go ui.forwardEvents()
+	C.ui_run()
+	return nil
+}
+
+func (ui *ui) forwardEvent(e events.BackgroundEvent) {
+	switch v := e.(type) {
+	case events.SigIntEvent:
+		log.Println("Cocoa UI sees sig int, forwarding to NSApp")
+		C.bg_shutdown()
+
+	case events.SetRootEvent:
+		cpath := C.CString(v.Path)
+		C.bg_set_root(cpath)
+
+	case events.BeginRequestEvent:
+		cpath := C.CString(v.Path)
+		req := (*C.struct_RequestMeta)(C.malloc(C.sizeof_struct_RequestMeta))
+		req.seq = C.int(v.Seq)
+		req.path = cpath
+		C.bg_received_request(req)
+
+	case events.EndRequestEvent:
+		res := (*C.struct_ResponseMeta)(C.malloc(C.sizeof_struct_ResponseMeta))
+		res.seq = C.int(v.Seq)
+		res.status = C.int(v.Status)
+		res.bytes = C.int(v.Bytes)
+		C.bg_sent_response(res)
+	}
+}
+
+func (ui *ui) forwardEvents() {
+	for e := range ui.in {
+		ui.forwardEvent(e)
+	}
+}
+
+//export selectDirectory
+func selectDirectory(cpath *C.char) {
+	path := C.GoString(cpath)
+	instance.out <- events.UserSelectedDirectory{Path: path}
+}

ui/cocoa/ui.m

@@ -1,7 +1,7 @@
 #import <Cocoa/Cocoa.h>
 #import "AppDelegate.h"
 #import "EventBridge.h"
-#import "ui_darwin.h"
+#import "ui.h"
 
 id defaultAutoreleasePool;
 id appDelegate;

ui/ui_darwin.go

@@ -1,80 +1,9 @@
 package ui
 
 import (
-	"log"
-
-	"github.com/jordanorelli/dws/events"
+	"github.com/jordanorelli/dws/ui/cocoa"
 )
 
-/*
-#cgo CFLAGS: -x objective-c
-#cgo LDFLAGS: -framework Cocoa
-#include <stdlib.h>
-#include "ui_darwin.h"
-*/
-import "C"
-
-var desktopUI *cocoaUI
-
 func Desktop() UI {
-	if desktopUI != nil {
-		return desktopUI
-	}
-
-	log.Println("Creating new Cocoa UI")
-	C.ui_init()
-	desktopUI = new(cocoaUI)
-	return desktopUI
-}
-
-type cocoaUI struct {
-	in  chan events.BackgroundEvent
-	out chan events.UserEvent
-}
-
-func (ui *cocoaUI) Run(out chan events.UserEvent, in chan events.BackgroundEvent) error {
-	log.Println("Running Desktop UI")
-	ui.in = in
-	ui.out = out
-	go ui.forwardEvents()
-	C.ui_run()
-	return nil
-}
-
-func (ui *cocoaUI) forwardEvent(e events.BackgroundEvent) {
-	switch v := e.(type) {
-	case events.SigIntEvent:
-		log.Println("Cocoa UI sees sig int, forwarding to NSApp")
-		C.bg_shutdown()
-
-	case events.SetRootEvent:
-		cpath := C.CString(v.Path)
-		C.bg_set_root(cpath)
-
-	case events.BeginRequestEvent:
-		cpath := C.CString(v.Path)
-		req := (*C.struct_RequestMeta)(C.malloc(C.sizeof_struct_RequestMeta))
-		req.seq = C.int(v.Seq)
-		req.path = cpath
-		C.bg_received_request(req)
-
-	case events.EndRequestEvent:
-		res := (*C.struct_ResponseMeta)(C.malloc(C.sizeof_struct_ResponseMeta))
-		res.seq = C.int(v.Seq)
-		res.status = C.int(v.Status)
-		res.bytes = C.int(v.Bytes)
-		C.bg_sent_response(res)
-	}
-}
-
-func (ui *cocoaUI) forwardEvents() {
-	for e := range ui.in {
-		ui.forwardEvent(e)
-	}
-}
-
-//export selectDirectory
-func selectDirectory(cpath *C.char) {
-	path := C.GoString(cpath)
-	desktopUI.out <- events.UserSelectedDirectory{Path: path}
+	return cocoa.Desktop()
 }