1// Copyright (c) 2012 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.
4
5#include "apps/app_restore_service.h"
6
7#include "apps/app_lifetime_monitor_factory.h"
8#include "apps/app_restore_service_factory.h"
9#include "apps/launcher.h"
10#include "apps/saved_files_service.h"
11#include "chrome/browser/chrome_notification_types.h"
12#include "chrome/browser/profiles/profile.h"
13#include "extensions/browser/app_window/app_window.h"
14#include "extensions/browser/extension_host.h"
15#include "extensions/browser/extension_prefs.h"
16#include "extensions/browser/extension_registry.h"
17#include "extensions/common/extension.h"
18#include "extensions/common/extension_set.h"
19
20using extensions::Extension;
21using extensions::ExtensionHost;
22using extensions::ExtensionPrefs;
23using extensions::ExtensionRegistry;
24
25namespace apps {
26
27// static
28bool AppRestoreService::ShouldRestoreApps(bool is_browser_restart) {
29  bool should_restore_apps = is_browser_restart;
30#if defined(OS_CHROMEOS)
31  // Chromeos always restarts apps, even if it was a regular shutdown.
32  should_restore_apps = true;
33#endif
34  return should_restore_apps;
35}
36
37AppRestoreService::AppRestoreService(Profile* profile)
38    : profile_(profile) {
39  StartObservingAppLifetime();
40}
41
42void AppRestoreService::HandleStartup(bool should_restore_apps) {
43  const extensions::ExtensionSet& extensions =
44      ExtensionRegistry::Get(profile_)->enabled_extensions();
45  ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(profile_);
46
47  for (extensions::ExtensionSet::const_iterator it = extensions.begin();
48      it != extensions.end(); ++it) {
49    const Extension* extension = it->get();
50    if (extension_prefs->IsExtensionRunning(extension->id())) {
51      RecordAppStop(extension->id());
52      // If we are not restoring apps (e.g., because it is a clean restart), and
53      // the app does not have retain permission, explicitly clear the retained
54      // entries queue.
55      if (should_restore_apps) {
56        RestoreApp(it->get());
57      } else {
58        SavedFilesService::Get(profile_)->ClearQueueIfNoRetainPermission(
59            extension);
60      }
61    }
62  }
63}
64
65bool AppRestoreService::IsAppRestorable(const std::string& extension_id) {
66  return ExtensionPrefs::Get(profile_)->IsExtensionRunning(extension_id);
67}
68
69// static
70AppRestoreService* AppRestoreService::Get(Profile* profile) {
71  return apps::AppRestoreServiceFactory::GetForProfile(profile);
72}
73
74void AppRestoreService::OnAppStart(Profile* profile,
75                                   const std::string& app_id) {
76  RecordAppStart(app_id);
77}
78
79void AppRestoreService::OnAppActivated(Profile* profile,
80                                       const std::string& app_id) {
81  RecordAppActiveState(app_id, true);
82}
83
84void AppRestoreService::OnAppDeactivated(Profile* profile,
85                                         const std::string& app_id) {
86  RecordAppActiveState(app_id, false);
87}
88
89void AppRestoreService::OnAppStop(Profile* profile, const std::string& app_id) {
90  RecordAppStop(app_id);
91}
92
93void AppRestoreService::OnChromeTerminating() {
94  // We want to preserve the state when the app begins terminating, so stop
95  // listening to app lifetime events.
96  StopObservingAppLifetime();
97}
98
99void AppRestoreService::Shutdown() {
100  StopObservingAppLifetime();
101}
102
103void AppRestoreService::RecordAppStart(const std::string& extension_id) {
104  ExtensionPrefs::Get(profile_)->SetExtensionRunning(extension_id, true);
105}
106
107void AppRestoreService::RecordAppStop(const std::string& extension_id) {
108  ExtensionPrefs::Get(profile_)->SetExtensionRunning(extension_id, false);
109}
110
111void AppRestoreService::RecordAppActiveState(const std::string& id,
112                                             bool is_active) {
113  ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(profile_);
114
115  // If the extension isn't running then we will already have recorded whether
116  // it is active or not.
117  if (!extension_prefs->IsExtensionRunning(id))
118    return;
119
120  extension_prefs->SetIsActive(id, is_active);
121}
122
123void AppRestoreService::RestoreApp(const Extension* extension) {
124  RestartPlatformApp(profile_, extension);
125}
126
127void AppRestoreService::StartObservingAppLifetime() {
128  AppLifetimeMonitor* app_lifetime_monitor =
129      AppLifetimeMonitorFactory::GetForProfile(profile_);
130  DCHECK(app_lifetime_monitor);
131  app_lifetime_monitor->AddObserver(this);
132}
133
134void AppRestoreService::StopObservingAppLifetime() {
135  AppLifetimeMonitor* app_lifetime_monitor =
136      AppLifetimeMonitorFactory::GetForProfile(profile_);
137  // This might be NULL in tests.
138  if (app_lifetime_monitor)
139    app_lifetime_monitor->RemoveObserver(this);
140}
141
142}  // namespace apps
143