Prevent Chrome from quitting when apps are open. (Mac)

chrome/browser/ui/cocoa/apps/quit_with_apps_controller_mac.cc

+// Copyright 2014 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.
+
+#include "chrome/browser/ui/cocoa/apps/quit_with_apps_controller_mac.h"
+
+#include "apps/app_window.h"
+#include "apps/app_window_registry.h"
+#include "apps/ui/native_app_window.h"
+#include "base/command_line.h"
+#include "base/i18n/number_formatting.h"
+#include "base/prefs/pref_registry_simple.h"
+#include "base/prefs/pref_service.h"
+#include "base/strings/sys_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/notifications/notification.h"
+#include "chrome/browser/notifications/notification_ui_manager.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/ui/browser_iterator.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/common/pref_names.h"
+#include "extensions/common/extension.h"
+#include "grit/chromium_strings.h"
+#include "grit/generated_resources.h"
+#include "grit/google_chrome_strings.h"
+#include "grit/theme_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/l10n/l10n_util_mac.h"
+#include "ui/base/resource/resource_bundle.h"
+
+namespace {
+
+const char kQuitWithAppsOriginUrl[] = "chrome://quit-with-apps";
+const int kQuitAllAppsButtonIndex = 0;
+const int kDontShowAgainButtonIndex = 1;
+
+}  // namespace
+
+const char QuitWithAppsController::kQuitWithAppsNotificationID[] =
+    "quit-with-apps";
+
+QuitWithAppsController::QuitWithAppsController()
+    : suppress_for_session_(false) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  // There is only ever one notification to replace, so use the same replace_id
+  // each time.
+  base::string16 replace_id = base::UTF8ToUTF16(id());
+
+  message_center::ButtonInfo quit_apps_button_info(
+      l10n_util::GetStringUTF16(IDS_QUIT_WITH_APPS_QUIT_LABEL));
+  message_center::ButtonInfo suppression_button_info(
+      l10n_util::GetStringUTF16(IDS_QUIT_WITH_APPS_SUPPRESSION_LABEL));
+  message_center::RichNotificationData rich_notification_data;
+  rich_notification_data.buttons.push_back(quit_apps_button_info);
+  rich_notification_data.buttons.push_back(suppression_button_info);
+
+  notification_.reset(new Notification(
+      message_center::NOTIFICATION_TYPE_SIMPLE,
+      GURL(kQuitWithAppsOriginUrl),
+      l10n_util::GetStringUTF16(IDS_QUIT_WITH_APPS_TITLE),
+      l10n_util::GetStringUTF16(IDS_QUIT_WITH_APPS_EXPLANATION),
+      ui::ResourceBundle::GetSharedInstance().GetImageNamed(
+          IDR_APP_DEFAULT_ICON),
+      blink::WebTextDirectionDefault,
+      message_center::NotifierId(message_center::NotifierId::SYSTEM_COMPONENT,
+                                 kQuitWithAppsNotificationID),
+      l10n_util::GetStringUTF16(IDS_QUIT_WITH_APPS_NOTIFICATION_DISPLAY_SOURCE),
+      replace_id,
+      rich_notification_data,
+      this));
+}
+
+QuitWithAppsController::~QuitWithAppsController() {}
+
+void QuitWithAppsController::Display() {}
+
+void QuitWithAppsController::Error() {
+  LOG(ERROR) << "Error displaying notification while quitting with apps open.";
+}
+
+void QuitWithAppsController::Close(bool by_user) {
+  if (by_user)
+    suppress_for_session_ = true;
+}
+
+void QuitWithAppsController::Click() {
+  g_browser_process->notification_ui_manager()->CancelById(id());
+}
+
+void QuitWithAppsController::ButtonClick(int button_index) {
+  typedef apps::AppWindowRegistry::AppWindowList AppWindowList;
+
+  g_browser_process->notification_ui_manager()->CancelById(id());
+  if (button_index == kQuitAllAppsButtonIndex) {
+    ProfileManager* profile_manager = g_browser_process->profile_manager();
+    if (!profile_manager)
+      return;
+
+    std::vector<Profile*> profiles(profile_manager->GetLoadedProfiles());
+    for (size_t i = 0; i < profiles.size(); ++i) {
+      const AppWindowList& windows =
+          apps::AppWindowRegistry::Get(profiles[i])->app_windows();
+      while (windows.size())

[tapted, 2014/04/03 01:45:38]

(once moved): !windows.empty() -- AppWindowList is *actually* a list, so .size()
is O(n).. at least until C++11 is properly implemented (trivia: gcc implemented
it but had to revert due to ABI incompatability
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49561)

[jackhou1, 2014/04/03 03:07:07]

Done.

+        windows.front()->GetBaseWindow()->Close();
+    }
+  } else if (button_index == kDontShowAgainButtonIndex) {
+    g_browser_process->local_state()->SetBoolean(
+        prefs::kNotifyWhenAppsKeepChromeAlive, false);
+  }
+}
+
+content::RenderViewHost* QuitWithAppsController::GetRenderViewHost() const {
+  return NULL;
+}
+
+std::string QuitWithAppsController::id() const {
+  return kQuitWithAppsNotificationID;
+}
+
+bool QuitWithAppsController::ShouldQuit() {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  if (!CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kAppsKeepChromeAlive)) {
+    g_browser_process->local_state()->ClearPref(
+        prefs::kNotifyWhenAppsKeepChromeAlive);
+    return true;
+  }
+
+  // Quit immediately if there are no windows or the confirmation has been
+  // suppressed.
+  if (!apps::AppWindowRegistry::IsAppWindowRegisteredInAnyProfile(0))
+    return true;
+
+  // If there are browser windows, and this notification has been suppressed for
+  // this session or permanently, then just return false to prevent Chrome from
+  // quitting. If there are no browser windows, always show the notification.
+  bool suppress_always = !g_browser_process->local_state()->GetBoolean(
+      prefs::kNotifyWhenAppsKeepChromeAlive);
+  if (!chrome::BrowserIterator().done() &&
+      (suppress_for_session_ || suppress_always)) {
+    return false;
+  }
+
+  ProfileManager* profile_manager = g_browser_process->profile_manager();
+  if (!profile_manager)

[tapted, 2014/04/03 01:45:38]

nit: this can maybe be a DCHECK too (for same reasons as !profiles.empty below)

[jackhou1, 2014/04/03 03:07:07]

Done.

+    return true;
+
+  std::vector<Profile*> profiles(profile_manager->GetLoadedProfiles());
+  DCHECK(profiles.size());
+
+  // Delete any existing notification to ensure this one is shown.
+  g_browser_process->notification_ui_manager()->CancelById(id());
+  g_browser_process->notification_ui_manager()->Add(*notification_,
+                                                    profiles[0]);
+
+  // Always return false, the notification UI can be used to quit all apps which
+  // will cause Chrome to quit.
+  return false;
+}
+
+void QuitWithAppsController::RegisterPrefs(PrefRegistrySimple* registry) {

[tapted, 2014/04/03 01:45:38]

nit: // static

[jackhou1, 2014/04/03 03:07:07]

Done.

+  registry->RegisterBooleanPref(prefs::kNotifyWhenAppsKeepChromeAlive, true);
+}