blob: 1c8081ff166a96105c59bc93513b0bcb14cbd4d7 [file] [log] [blame]
// 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.
#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 {
class Observer {
// 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) {}
virtual ~Observer() {}
explicit AppLifetimeMonitor(content::BrowserContext* context);
~AppLifetimeMonitor() override;
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
// 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