| // 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 content { |
| class BrowserContext; |
| } |
| |
| 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(content::BrowserContext* context, |
| const std::string& app_id) {} |
| // Called when the app becomes active to the user, i.e. the first window |
| // becomes visible. |
| virtual void OnAppActivated(content::BrowserContext* context, |
| const std::string& app_id) {} |
| // Called when the app becomes inactive to the user, i.e. the last window is |
| // hidden or closed. |
| virtual void OnAppDeactivated(content::BrowserContext* context, |
| const std::string& app_id) {} |
| // Called when the app stops running. |
| virtual void OnAppStop(content::BrowserContext* context, |
| const std::string& app_id) {} |
| |
| protected: |
| virtual ~Observer() = default; |
| }; |
| |
| explicit AppLifetimeMonitor(content::BrowserContext* context); |
| AppLifetimeMonitor(const AppLifetimeMonitor&) = delete; |
| AppLifetimeMonitor& operator=(const AppLifetimeMonitor&) = delete; |
| ~AppLifetimeMonitor() override; |
| |
| void AddObserver(Observer* observer); |
| void RemoveObserver(Observer* observer); |
| |
| private: |
| // content::NotificationObserver overrides: |
| void Observe(int type, |
| const content::NotificationSource& source, |
| const content::NotificationDetails& details) override; |
| |
| // extensions::AppWindowRegistry::Observer overrides: |
| void OnAppWindowRemoved(extensions::AppWindow* app_window) override; |
| void OnAppWindowHidden(extensions::AppWindow* app_window) override; |
| void OnAppWindowShown(extensions::AppWindow* app_window, |
| bool was_hidden) override; |
| |
| // KeyedService overrides: |
| void Shutdown() override; |
| |
| bool HasOtherVisibleAppWindows(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); |
| |
| content::NotificationRegistrar registrar_; |
| content::BrowserContext* context_; |
| base::ObserverList<Observer>::Unchecked observers_; |
| }; |
| |
| } // namespace apps |
| |
| #endif // APPS_APP_LIFETIME_MONITOR_H_ |