cocoa: Add some bare-bones menus on the Mac to conform better to the

Apple Human Interface Guidelines.

For now, we only add menu items that are either completely implemented
by Cocoa or implemented ourselves. This means that, in particular, the
Edit and Help menus are absent, since Glutin does not implement these
features yet.

Requires servo/cocoa-rs#125.

src/api/cocoa/mod.rs

@@ -44,6 +44,7 @@ use std::sync::Mutex;
 use std::ascii::AsciiExt;
 use std::ops::Deref;
 use std::path::PathBuf;
+use std::env;
 
 use events::ElementState::{Pressed, Released};
 use events::Event::{Awakened, MouseInput, MouseMoved, ReceivedCharacter, KeyboardInput};
@@ -397,6 +398,9 @@ impl Window {
                     }
                 }
                 app.finishLaunching();
+
+                Window::create_menus(app_name);
+
                 Some(app)
             }
         }
@@ -588,6 +592,97 @@ impl Window {
         }
     }
 
+    fn create_menus(app_name: Option<&str>) {
+        unsafe {
+            let main_menu = NSMenu::alloc(nil).init();
+
+            let app_name = match app_name {
+                None => {
+                    match env::current_exe().ok().and_then(|path| {
+                        path.file_name().and_then(|name| name.to_str()
+                                                             .map(|name| name.to_owned()))
+                    }) {
+                        None => "Glutin".to_owned(),
+                        Some(name) => name,
+                    }
+                }
+                Some(name) => name.to_owned(),
+            };
+            let application_menu_name = NSString::alloc(nil).init_str(&app_name);
+
+            let application_menu = NSMenu::alloc(nil).initWithTitle_(application_menu_name);
+            let empty_string = NSString::alloc(nil).init_str("");
+            application_menu.addItemWithTitle_action_keyEquivalent(
+                NSString::alloc(nil).init_str("About ")
+                                    .stringByAppendingString_(application_menu_name),
+                sel!(orderFrontStandardAboutPanel:),
+                empty_string);
+            application_menu.addItem_(NSMenuItem::separatorItem(nil));
+            let services_string = NSString::alloc(nil).init_str("Services");
+            let menu = NSMenu::alloc(nil).initWithTitle_(services_string);
+            let item = NSMenuItem::alloc(nil).init();
+            item.setTitle_(services_string);
+            item.setSubmenu_(menu);
+            application_menu.addItem_(item);
+            NSApp().setServicesMenu_(menu);
+            application_menu.addItem_(NSMenuItem::separatorItem(nil));
+            application_menu.addItemWithTitle_action_keyEquivalent(
+                NSString::alloc(nil).init_str("Hide ")
+                                    .stringByAppendingString_(application_menu_name),
+                sel!(hide:),
+                NSString::alloc(nil).init_str("h"));
+            let item = application_menu.addItemWithTitle_action_keyEquivalent(
+                NSString::alloc(nil).init_str("Hide Others"),
+                sel!(hideOtherApplications:),
+                NSString::alloc(nil).init_str("h"));
+            item.setKeyEquivalentModifierMask_(NSCommandKeyMask | NSAlternateKeyMask);
+            application_menu.addItemWithTitle_action_keyEquivalent(
+                NSString::alloc(nil).init_str("Show All"),
+                sel!(unhideAllApplications:),
+                empty_string);
+            application_menu.addItem_(NSMenuItem::separatorItem(nil));
+            application_menu.addItemWithTitle_action_keyEquivalent(
+                NSString::alloc(nil).init_str("Quit ")
+                            .stringByAppendingString_(application_menu_name),
+                sel!(terminate:),
+                NSString::alloc(nil).init_str("q"));
+            let item = NSMenuItem::alloc(nil).init();
+            item.setTitle_(application_menu_name);
+            item.setSubmenu_(application_menu);
+            main_menu.addItem_(item);
+
+            let view_string = NSString::alloc(nil).init_str("View");
+            let menu = NSMenu::alloc(nil).initWithTitle_(view_string);
+            let item = menu.addItemWithTitle_action_keyEquivalent(
+                NSString::alloc(nil).init_str("Enter Full Screen"),
+                sel!(toggleFullScreen:),
+                NSString::alloc(nil).init_str("f"));
+            item.setKeyEquivalentModifierMask_(NSCommandKeyMask | NSControlKeyMask);
+            let item = NSMenuItem::alloc(nil).init();
+            item.setTitle_(view_string);
+            item.setSubmenu_(menu);
+            main_menu.addItem_(item);
+
+            let window_string = NSString::alloc(nil).init_str("Window");
+            let menu = NSMenu::alloc(nil).initWithTitle_(window_string);
+            menu.addItemWithTitle_action_keyEquivalent(
+                NSString::alloc(nil).init_str("Minimize"),
+                sel!(performMiniaturize:),
+                NSString::alloc(nil).init_str("m"));
+            menu.addItemWithTitle_action_keyEquivalent(
+                NSString::alloc(nil).init_str("Zoom"),
+                sel!(performZoom:),
+                empty_string);
+            let item = NSMenuItem::alloc(nil).init();
+            item.setTitle_(window_string);
+            item.setSubmenu_(menu);
+            main_menu.addItem_(item);
+
+            NSApp().setMainMenu_(main_menu);
+            NSApp().setWindowsMenu_(menu);
+        }
+    }
+
     pub fn set_title(&self, title: &str) {
         unsafe {
             let title = IdRef::new(NSString::alloc(nil).init_str(title));