apps/app_restore_service.cc

   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/app_window.h"
  10 #include "apps/launcher.h"
  11 #include "apps/saved_files_service.h"
  12 #include "chrome/browser/chrome_notification_types.h"
  13 #include "chrome/browser/profiles/profile.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
  20 using extensions::Extension;
  21 using extensions::ExtensionHost;
  22 using extensions::ExtensionPrefs;
  23 using extensions::ExtensionRegistry;
  24
  25 namespace apps {
  26
  27 // static
  28 bool 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
  37 AppRestoreService::AppRestoreService(Profile* profile)
  38     : profile_(profile) {
  39   StartObservingAppLifetime();
  40 }
  41
  42 void 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
  65 bool AppRestoreService::IsAppRestorable(const std::string& extension_id) {
  66   return ExtensionPrefs::Get(profile_)->IsExtensionRunning(extension_id);
  67 }
  68
  69 // static
  70 AppRestoreService* AppRestoreService::Get(Profile* profile) {
  71   return apps::AppRestoreServiceFactory::GetForProfile(profile);
  72 }
  73
  74 void AppRestoreService::OnAppStart(Profile* profile,
  75                                    const std::string& app_id) {
  76   RecordAppStart(app_id);
  77 }
  78
  79 void AppRestoreService::OnAppActivated(Profile* profile,
  80                                        const std::string& app_id) {
  81   RecordAppActiveState(app_id, true);
  82 }
  83
  84 void AppRestoreService::OnAppDeactivated(Profile* profile,
  85                                          const std::string& app_id) {
  86   RecordAppActiveState(app_id, false);
  87 }
  88
  89 void AppRestoreService::OnAppStop(Profile* profile, const std::string& app_id) {
  90   RecordAppStop(app_id);
  91 }
  92
  93 void 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
  99 void AppRestoreService::Shutdown() {
 100   StopObservingAppLifetime();
 101 }
 102
 103 void AppRestoreService::RecordAppStart(const std::string& extension_id) {
 104   ExtensionPrefs::Get(profile_)->SetExtensionRunning(extension_id, true);
 105 }
 106
 107 void AppRestoreService::RecordAppStop(const std::string& extension_id) {
 108   ExtensionPrefs::Get(profile_)->SetExtensionRunning(extension_id, false);
 109 }
 110
 111 void 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
 123 void AppRestoreService::RestoreApp(const Extension* extension) {
 124   RestartPlatformApp(profile_, extension);
 125 }
 126
 127 void AppRestoreService::StartObservingAppLifetime() {
 128   AppLifetimeMonitor* app_lifetime_monitor =
 129       AppLifetimeMonitorFactory::GetForProfile(profile_);
 130   DCHECK(app_lifetime_monitor);
 131   app_lifetime_monitor->AddObserver(this);
 132 }
 133
 134 void 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