Swap main menu with app-specific menu when app window focused.

chrome/browser/ui/cocoa/apps/app_menu_controller_mac_browsertest.mm

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "chrome/browser/ui/cocoa/apps/app_menu_controller_mac.h"
+
+#import <Cocoa/Cocoa.h>
+
+#include "apps/shell_window_registry.h"
+#include "base/command_line.h"
+#include "base/mac/scoped_nsobject.h"
+#include "base/strings/sys_string_conversions.h"
+#include "chrome/browser/extensions/extension_test_message_listener.h"
+#include "chrome/browser/extensions/platform_app_browsertest_util.h"
+#import "chrome/common/chrome_switches.h"
+#include "chrome/common/extensions/extension.h"
+
+namespace {
+
+class AppMenuControllerBrowserTest
+    : public extensions::PlatformAppBrowserTest {
+ protected:
+  AppMenuControllerBrowserTest() {}
+};
+
+// Test that focusing an app window changes the menu bar.
+IN_PROC_BROWSER_TEST_F(AppMenuControllerBrowserTest,
+                       PlatformAppFocusUpdatesMenuBar) {
+  // Start two apps and wait for them to be launched.
+  ExtensionTestMessageListener listener_1("Launched", false);
+  const extensions::Extension* app_1 =
+      InstallAndLaunchPlatformApp("minimal_id");
+  ASSERT_TRUE(listener_1.WaitUntilSatisfied());
+  ExtensionTestMessageListener listener_2("Launched", false);
+  const extensions::Extension* app_2 =
+      InstallAndLaunchPlatformApp("minimal");
+  ASSERT_TRUE(listener_2.WaitUntilSatisfied());
+
+  NSMenu* main_menu = [NSApp mainMenu];
+  NSUInteger initial_menu_item_count = [[main_menu itemArray] count];
+
+  // When an app is focused, all Chrome menu items should be hidden, and a menu
+  // item for the app should be added.
+  apps::ShellWindow* app_1_shell_window =
+      apps::ShellWindowRegistry::Get(profile())->
+          GetShellWindowsForApp(app_1->id()).front();
+  [[NSNotificationCenter defaultCenter]
+      postNotificationName:NSWindowDidBecomeMainNotification
+                    object:app_1_shell_window->GetNativeWindow()];
+  NSArray* item_array = [main_menu itemArray];
+  EXPECT_EQ(initial_menu_item_count + 1, [item_array count]);
+  for (NSUInteger i = 0; i < initial_menu_item_count; ++i)
+    EXPECT_TRUE([[item_array objectAtIndex:i] isHidden]);
+  NSMenuItem* last_item = [item_array lastObject];
+  EXPECT_EQ(app_1->id(), base::SysNSStringToUTF8([last_item title]));
+  EXPECT_EQ(app_1->name(),
+            base::SysNSStringToUTF8([[last_item submenu] title]));
+  EXPECT_FALSE([last_item isHidden]);
+
+  // When another app is focused, the menu item for the app should change.
+  apps::ShellWindow* app_2_shell_window =
+      apps::ShellWindowRegistry::Get(profile())->
+          GetShellWindowsForApp(app_2->id()).front();
+  [[NSNotificationCenter defaultCenter]
+      postNotificationName:NSWindowDidBecomeMainNotification
+                    object:app_2_shell_window->GetNativeWindow()];
+  item_array = [main_menu itemArray];
+  EXPECT_EQ(initial_menu_item_count + 1, [item_array count]);
+  for (NSUInteger i = 0; i < initial_menu_item_count; ++i)
+    EXPECT_TRUE([[item_array objectAtIndex:i] isHidden]);
+  last_item = [item_array lastObject];
+  EXPECT_EQ(app_2->id(), base::SysNSStringToUTF8([last_item title]));
+  EXPECT_EQ(app_2->name(),
+            base::SysNSStringToUTF8([[last_item submenu] title]));
+  EXPECT_FALSE([last_item isHidden]);
+
+  // When the app window loses focus, the menu items for the app should be
+  // removed.
+  [[NSNotificationCenter defaultCenter]
+      postNotificationName:NSWindowDidResignMainNotification
+                    object:app_2_shell_window->GetNativeWindow()];
+  item_array = [main_menu itemArray];
+  EXPECT_EQ(initial_menu_item_count, [item_array count]);
+  for (NSUInteger i = 0; i < initial_menu_item_count; ++i)
+    EXPECT_FALSE([[item_array objectAtIndex:i] isHidden]);
+}
+
+}  // namespace