| // Copyright 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. |
| |
| #ifndef APPS_APP_LIFETIME_MONITOR_H_ |
| #define APPS_APP_LIFETIME_MONITOR_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/observer_list.h" |
| #include "components/keyed_service/core/keyed_service.h" |
| #include "content/public/browser/notification_observer.h" |
| #include "content/public/browser/notification_registrar.h" |
| #include "extensions/browser/app_window/app_window_registry.h" |
| |
| namespace extensions { |
| class Extension; |
| } |
| |
| class Profile; |
| |
| namespace apps { |
| |
| // Observes startup of apps and their windows and notifies observers of these |
| // events. |
| class AppLifetimeMonitor : public KeyedService, |
| public content::NotificationObserver, |
| public extensions::AppWindowRegistry::Observer { |
| public: |
| class Observer { |
| public: |
| // Called when the app starts running. |
| virtual void OnAppStart(Profile* profile, const std::string& app_id) {} |
| // Called when the app becomes active to the user, i.e. it opens a window. |
| virtual void OnAppActivated(Profile* profile, const std::string& app_id) {} |
| // Called when the app becomes inactive to the user. |
| virtual void OnAppDeactivated(Profile* profile, const std::string& app_id) { |
| } |
| // Called when the app stops running. |
| virtual void OnAppStop(Profile* profile, const std::string& app_id) {} |
| // Called when chrome is about to terminate. This gives observers a chance |
| // to do something before the apps shut down. This is a system-wide event |
| // so there is no associated profile and app id. |
| virtual void OnChromeTerminating() {} |
| |
| protected: |
| virtual ~Observer() {} |
| }; |
| |
| explicit AppLifetimeMonitor(Profile* profile); |
| virtual ~AppLifetimeMonitor(); |
| |
| void AddObserver(Observer* observer); |
| void RemoveObserver(Observer* observer); |
| |
| private: |
| // content::NotificationObserver overrides: |
| virtual void Observe(int type, |
| const content::NotificationSource& source, |
| const content::NotificationDetails& details) OVERRIDE; |
| |
| // extensions::AppWindowRegistry::Observer overrides: |
| virtual void OnAppWindowRemoved(extensions::AppWindow* app_window) OVERRIDE; |
| virtual void OnAppWindowHidden(extensions::AppWindow* app_window) OVERRIDE; |
| virtual void OnAppWindowShown(extensions::AppWindow* app_window) OVERRIDE; |
| |
| // KeyedService overrides: |
| virtual void Shutdown() OVERRIDE; |
| |
| bool HasVisibleAppWindows(extensions::AppWindow* app_window) const; |
| |
| void NotifyAppStart(const std::string& app_id); |
| void NotifyAppActivated(const std::string& app_id); |
| void NotifyAppDeactivated(const std::string& app_id); |
| void NotifyAppStop(const std::string& app_id); |
| void NotifyChromeTerminating(); |
| |
| content::NotificationRegistrar registrar_; |
| Profile* profile_; |
| ObserverList<Observer> observers_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AppLifetimeMonitor); |
| }; |
| |
| } // namespace apps |
| |
| #endif // APPS_APP_LIFETIME_MONITOR_H_ |