Move application menu bar code to a new file

Put the menu code in its own file to keep it more organised. We're also
going to be adding a lot more code here for the base main menu.

Wasn't sure if I should be releasing these menu objects, but it looks
like the application works when I do release them, so maybe
`setMainMenu` does a retain or copy.

I can't decide if I should use C-style identifiers or Foundation-style
in the menu file.

4 files changed, 35 insertions, 18 deletions

diff --git a/src/AppDelegate.m b/src/AppDelegate.m
index 270be25..86ba5f6 100644
--- a/src/AppDelegate.m
+++ b/src/AppDelegate.m
@@ -1,4 +1,5 @@
 #import "AppDelegate.h"
+#import "main_menu.h"
 
 @implementation AppDelegate
 
@@ -10,6 +11,10 @@
 
 - (void)applicationWillFinishLaunching:(NSNotification *)notification
 {
+	NSMenu *menubar = main_menu_create();
+	[NSApp setMainMenu:menubar];
+	[menubar release];
+
 	_window = [[NSWindow alloc]
 		initWithContentRect:NSMakeRect(0, 0, 400, 400)
 		styleMask:NSWindowStyleMaskTitled
diff --git a/src/main.m b/src/main.m
index c7dac1b..5316dc2 100644
--- a/src/main.m
+++ b/src/main.m
@@ -10,29 +10,11 @@ int main() {
 	NSApplication *application = [NSApplication sharedApplication];
 	[application setActivationPolicy:NSApplicationActivationPolicyRegular];
 
-	NSMenu *menubar = [[NSMenu alloc] init];
-	NSMenuItem *application_menu_item = [[NSMenuItem alloc] init];
-	[menubar addItem:application_menu_item];
-
-	NSMenu *application_menu = [[NSMenu alloc] init];
-	NSMenuItem *quit_menu_item = [[NSMenuItem alloc]
-		initWithTitle:@"Quit"
-		action:@selector(terminate:)
-		keyEquivalent:@"q"];
-	[application_menu addItem:quit_menu_item];
-	[application_menu_item setSubmenu:application_menu];
-
-	[application setMainMenu:menubar];
-
 	NSObject<NSApplicationDelegate> *app_delegate = [[AppDelegate alloc] init];
 
 	[application setDelegate:app_delegate];
 	[application run];
 
-	[quit_menu_item release];
-	[application_menu release];
-	[application_menu_item release];
-	[menubar release];
 	[pool drain];
 
 	return EXIT_SUCCESS;
diff --git a/src/main_menu.h b/src/main_menu.h
new file mode 100644
index 0000000..2ed9ed6
--- /dev/null
+++ b/src/main_menu.h
@@ -0,0 +1,8 @@
+#ifndef MAIN_MENU_H
+#define MAIN_MENU_H
+
+#import <Cocoa/Cocoa.h>
+
+NSMenu *main_menu_create();
+
+#endif /* MAIN_MENU_H */
diff --git a/src/main_menu.m b/src/main_menu.m
new file mode 100644
index 0000000..6cf11af
--- /dev/null
+++ b/src/main_menu.m
@@ -0,0 +1,22 @@
+#import "main_menu.h"
+
+NSMenu *main_menu_create()
+{
+	NSMenu *menubar = [[NSMenu alloc] init];
+	NSMenuItem *application_menu_item = [[NSMenuItem alloc] init];
+	[menubar addItem:application_menu_item];
+
+	NSMenu *application_menu = [[NSMenu alloc] init];
+	NSMenuItem *quit_menu_item = [[NSMenuItem alloc]
+		initWithTitle:@"Quit"
+		action:@selector(terminate:)
+		keyEquivalent:@"q"];
+	[application_menu addItem:quit_menu_item];
+	[application_menu_item setSubmenu:application_menu];
+
+	[quit_menu_item release];
+	[application_menu release];
+	[application_menu_item release];
+
+	return menubar;
+}