Started conversion of delegate_darwin.go to use Objective-C directly.

delegate_darwin.go

@@ -18,10 +18,9 @@ This creates a class goAppDelegate that will be used as the delegate for /everyt
 // #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
 // #include <stdlib.h>
 // #include "objc_darwin.h"
-// extern void appDelegate_uitask(id, SEL, id);		/* from uitask_darwin.go */
-// extern BOOL appDelegate_windowShouldClose(id, SEL, id);
-// extern void appDelegate_windowDidResize(id, SEL, id);
-// extern void appDelegate_buttonClicked(id, SEL, id);
+// /* TODO this goes in objc_darwin.h once I take care of everything else */
+// extern id makeAppDelegate(void);
+// extern id windowGetContentView(id);
 import "C"
 
 var (
@@ -37,34 +36,15 @@ var (
 	_buttonClicked = sel_getUid("buttonClicked:")		// used by sysdata_darwin.go
 )
 
-var appDelegateSels = []selector{
-	selector{"uitask:", uintptr(C.appDelegate_uitask), sel_void_id,
-		"performing/dispatching UI events"},
-	selector{"windowShouldClose:", uintptr(C.appDelegate_windowShouldClose), sel_bool_id,
-		"handling window close button events"},
-	selector{"windowDidResize:", uintptr(C.appDelegate_windowDidResize), sel_void_id,
-		"handling window resize events"},
-	selector{"buttonClicked:", uintptr(C.appDelegate_buttonClicked), sel_bool_id,
-		"handling button clicks"},
-	selector{"applicationShouldTerminate:", uintptr(C._appDelegate_applicationShouldTerminate), sel_terminatereply_id,
-		"handling Quit menu items (such as from the Dock)/the AppQuit channel"},
-}
-
 func mkAppDelegate() error {
-	id, err := makeClass(_goAppDelegate, _NSObject, appDelegateSels,
-		"application delegate (handles events)")
-	if err != nil {
-		return err
-	}
-	appDelegate = C.objc_msgSend_noargs(id, _new)
+	appDelegate = C.makeAppDelegate()
 	return nil
 }
 
 //export appDelegate_windowShouldClose
-func appDelegate_windowShouldClose(self C.id, sel C.SEL, win C.id) C.BOOL {
+func appDelegate_windowShouldClose(win C.id) {
 	sysData := getSysData(win)
 	sysData.signal()
-	return C.BOOL(C.NO)		// don't close
 }
 
 var (
@@ -73,10 +53,9 @@ var (
 )
 
 //export appDelegate_windowDidResize
-func appDelegate_windowDidResize(self C.id, sel C.SEL, notification C.id) {
-	win := C.objc_msgSend_noargs(notification, _object)
+func appDelegate_windowDidResize(win C.id) {
 	s := getSysData(win)
-	wincv := C.objc_msgSend_noargs(win, _contentView)		// we want the content view's size, not the window's; selector defined in sysdata_darwin.go
+	wincv := C.windowGetContentView(win)		// we want the content view's size, not the window's
 	r := C.objc_msgSend_stret_rect_noargs(wincv, _frame)
 	// winheight is used here because (0,0) is the bottom-left corner, not the top-left corner
 	s.doResize(0, 0, int(r.width), int(r.height), int(r.height))
@@ -84,7 +63,7 @@ func appDelegate_windowDidResize(self C.id, sel C.SEL, notification C.id) {
 }
 
 //export appDelegate_buttonClicked
-func appDelegate_buttonClicked(self C.id, sel C.SEL, button C.id) {
+func appDelegate_buttonClicked(button C.id) {
 	sysData := getSysData(button)
 	sysData.signal()
 }
@@ -95,5 +74,4 @@ func appDelegate_applicationShouldTerminate() {
 	go func() {
 		AppQuit <- struct{}{}
 	}()
-	// xxx in bleh_darwin.m tells Cocoa not to quit
 }

delegate_darwin.m

@@ -0,0 +1,53 @@
+// 13 may 2014
+
+#include "objc_darwin.h"
+#include "_cgo_export.h"
+#include <Foundation/NSObject.h>
+#include <Foundation/NSValue.h>
+#include <Foundation/NSNotification.h>
+#include <AppKit/NSApplication.h>
+#include <AppKit/NSWindow.h>
+
+@interface appDelegate : NSObject
+@end
+
+@implementation appDelegate
+
+- (void)uitask:(NSValue *)fp
+{
+	appDelegate_uitask([fp pointerValue]);
+}
+
+- (BOOL)windowShouldClose:(id)win
+{
+	appDelegate_windowShouldClose(win);
+	return NO;		// don't close
+}
+
+- (void)windowDidResize:(NSNotification *)n
+{
+	appDelegate_windowDidResize([n object]);
+}
+
+- (void)buttonClicked:(id)button
+{
+	appDelegate_buttonClicked(button);
+}
+
+- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)app
+{
+	appDelegate_applicationShouldTerminate();
+	return NSTerminateCancel;
+}
+
+@end
+
+id makeAppDelegate(void)
+{
+	return [appDelegate new];
+}
+
+id windowGetContentView(id window)
+{
+	return [((NSWindow *) window) contentView];
+}

uitask_darwin.go

@@ -104,8 +104,7 @@ func initCocoa() (NSApp C.id, err error) {
 }
 
 //export appDelegate_uitask
-func appDelegate_uitask(self C.id, sel C.SEL, arg C.id) {
-	p := C.objc_msgSend_noargs(arg, _pointerValue)
+func appDelegate_uitask(p unsafe.Pointer) {
 	f := (*func ())(unsafe.Pointer(p))
 	(*f)()
 }