Migrated the Mac OS X delegate code to the new API.

delegate_darwin.go

@@ -24,9 +24,11 @@ func makeAppDelegate() {
 }
 
 //export appDelegate_windowShouldClose
-func appDelegate_windowShouldClose(win C.id) {
+func appDelegate_windowShouldClose(win C.id) C.BOOL {
 	sysData := getSysData(win)
-	sysData.signal()
+	b := false		// TODO
+	sysData.close(&b)
+	return toBOOL(b)
 }
 
 //export appDelegate_windowDidResize
@@ -42,13 +44,5 @@ func appDelegate_windowDidResize(win C.id) {
 //export appDelegate_buttonClicked
 func appDelegate_buttonClicked(button C.id) {
 	sysData := getSysData(button)
-	sysData.signal()
-}
-
-//export appDelegate_applicationShouldTerminate
-func appDelegate_applicationShouldTerminate() {
-	// asynchronous so as to return control to the event loop
-	go func() {
-		AppQuit <- struct{}{}
-	}()
+	sysData.event()
 }

delegateuitask_darwin.m

@@ -63,8 +63,7 @@ extern NSRect dummyRect;
 
 - (BOOL)windowShouldClose:(id)win
 {
-	appDelegate_windowShouldClose(win);
-	return NO;		// don't close
+	return appDelegate_windowShouldClose(win);
 }
 
 - (void)windowDidResize:(NSNotification *)n
@@ -79,8 +78,18 @@ extern NSRect dummyRect;
 
 - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)app
 {
-	appDelegate_applicationShouldTerminate();
-	return NSTerminateCancel;
+	NSArray *windows;
+	NSUInteger i;
+
+	// try to close all windows
+	windows = [NSApp windows];
+	for (i = 0; i < [windows count]; i++)
+		[[windows objectAtIndex:i] performClose:self];
+	// if any windows are left, cancel
+	if ([[NSApp windows] count] != 0)
+		return NSTerminateCancel;
+	// no windows are left; we're good
+	return NSTerminateNow;
 }
 
 - (void)alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)chan