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// 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 "apps/shell_window_registry.h"
#include "base/observer_list.h"
#include "components/browser_context_keyed_service/browser_context_keyed_service.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.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 BrowserContextKeyedService,
public content::NotificationObserver,
public ShellWindowRegistry::Observer {
public:
class Observer {
public:
// Called when the app starts running.
virtual void OnAppStart(Profile* profile, const std::string& app_id) = 0;
// 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) = 0;
// Called when the app becomes inactive to the user.
virtual void OnAppDeactivated(Profile* profile,
const std::string& app_id) = 0;
// Called when the app stops running.
virtual void OnAppStop(Profile* profile, const std::string& app_id) = 0;
// 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() = 0;
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;
// ShellWindowRegistry::Observer overrides:
virtual void OnShellWindowAdded(ShellWindow* shell_window) OVERRIDE;
virtual void OnShellWindowIconChanged(ShellWindow* shell_window) OVERRIDE;
virtual void OnShellWindowRemoved(ShellWindow* shell_window) OVERRIDE;
// BrowserContextKeyedService overrides:
virtual void Shutdown() OVERRIDE;
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_
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