1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef APPS_APP_LIFETIME_MONITOR_H_
6 #define APPS_APP_LIFETIME_MONITOR_H_
11 #include "apps/app_window_registry.h"
12 #include "base/observer_list.h"
13 #include "components/keyed_service/core/keyed_service.h"
14 #include "content/public/browser/notification_observer.h"
15 #include "content/public/browser/notification_registrar.h"
17 namespace extensions
{
25 // Observes startup of apps and their windows and notifies observers of these
27 class AppLifetimeMonitor
: public KeyedService
,
28 public content::NotificationObserver
,
29 public AppWindowRegistry::Observer
{
33 // Called when the app starts running.
34 virtual void OnAppStart(Profile
* profile
, const std::string
& app_id
) = 0;
35 // Called when the app becomes active to the user, i.e. it opens a window.
36 virtual void OnAppActivated(Profile
* profile
,
37 const std::string
& app_id
) = 0;
38 // Called when the app becomes inactive to the user.
39 virtual void OnAppDeactivated(Profile
* profile
,
40 const std::string
& app_id
) = 0;
41 // Called when the app stops running.
42 virtual void OnAppStop(Profile
* profile
, const std::string
& app_id
) = 0;
43 // Called when chrome is about to terminate. This gives observers a chance
44 // to do something before the apps shut down. This is a system-wide event
45 // so there is no associated profile and app id.
46 virtual void OnChromeTerminating() = 0;
49 virtual ~Observer() {}
52 explicit AppLifetimeMonitor(Profile
* profile
);
53 virtual ~AppLifetimeMonitor();
55 void AddObserver(Observer
* observer
);
56 void RemoveObserver(Observer
* observer
);
59 // content::NotificationObserver overrides:
60 virtual void Observe(int type
,
61 const content::NotificationSource
& source
,
62 const content::NotificationDetails
& details
) OVERRIDE
;
64 // AppWindowRegistry::Observer overrides:
65 virtual void OnAppWindowAdded(AppWindow
* app_window
) OVERRIDE
;
66 virtual void OnAppWindowIconChanged(AppWindow
* app_window
) OVERRIDE
;
67 virtual void OnAppWindowRemoved(AppWindow
* app_window
) OVERRIDE
;
69 // KeyedService overrides:
70 virtual void Shutdown() OVERRIDE
;
72 void NotifyAppStart(const std::string
& app_id
);
73 void NotifyAppActivated(const std::string
& app_id
);
74 void NotifyAppDeactivated(const std::string
& app_id
);
75 void NotifyAppStop(const std::string
& app_id
);
76 void NotifyChromeTerminating();
78 content::NotificationRegistrar registrar_
;
80 ObserverList
<Observer
> observers_
;
82 DISALLOW_COPY_AND_ASSIGN(AppLifetimeMonitor
);
87 #endif // APPS_APP_LIFETIME_MONITOR_H_