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 "chrome/browser/extensions/api/app_runtime/app_runtime_api.h"
   8 #include "chrome/browser/extensions/api/file_handlers/app_file_handler_util.h"
   9 #include "chrome/browser/extensions/event_router.h"
  10 #include "chrome/browser/extensions/extension_host.h"
  11 #include "chrome/browser/extensions/extension_service.h"
  12 #include "chrome/browser/extensions/extension_system.h"
  13 #include "chrome/browser/extensions/platform_app_launcher.h"
  14 #include "chrome/common/chrome_notification_types.h"
  15 #include "chrome/common/extensions/extension.h"
  16 #include "chrome/common/extensions/extension_set.h"
  17 #include "content/public/browser/notification_details.h"
  18 #include "content/public/browser/notification_service.h"
  19 #include "content/public/browser/notification_types.h"
  20
  21 #if defined(OS_WIN)
  22 #include "win8/util/win8_util.h"
  23 #endif
  24
  25 using extensions::AppEventRouter;
  26 using extensions::Extension;
  27 using extensions::ExtensionHost;
  28 using extensions::ExtensionPrefs;
  29 using extensions::ExtensionSystem;
  30
  31 namespace apps {
  32
  33 // static
  34 bool AppRestoreService::ShouldRestoreApps(bool is_browser_restart) {
  35   bool should_restore_apps = is_browser_restart;
  36 #if defined(OS_CHROMEOS)
  37   // Chromeos always restarts apps, even if it was a regular shutdown.
  38   should_restore_apps = true;
  39 #elif defined(OS_WIN)
  40   // Packaged apps are not supported in Metro mode, so don't try to start them.
  41   if (win8::IsSingleWindowMetroMode())
  42     should_restore_apps = false;
  43 #endif
  44   return should_restore_apps;
  45 }
  46
  47 AppRestoreService::AppRestoreService(Profile* profile)
  48     : profile_(profile) {
  49   registrar_.Add(
  50       this, chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING,
  51       content::NotificationService::AllSources());
  52   registrar_.Add(
  53       this, chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED,
  54       content::NotificationService::AllSources());
  55   registrar_.Add(
  56       this, chrome::NOTIFICATION_APP_TERMINATING,
  57       content::NotificationService::AllSources());
  58 }
  59
  60 void AppRestoreService::HandleStartup(bool should_restore_apps) {
  61   ExtensionService* extension_service =
  62       ExtensionSystem::Get(profile_)->extension_service();
  63   const ExtensionSet* extensions = extension_service->extensions();
  64   ExtensionPrefs* extension_prefs = extension_service->extension_prefs();
  65
  66   for (ExtensionSet::const_iterator it = extensions->begin();
  67       it != extensions->end(); ++it) {
  68     const Extension* extension = *it;
  69     if (extension_prefs->IsExtensionRunning(extension->id())) {
  70       std::vector<SavedFileEntry> file_entries;
  71       extension_prefs->GetSavedFileEntries(extension->id(), &file_entries);
  72       RecordAppStop(extension->id());
  73       if (should_restore_apps)
  74         RestoreApp(*it, file_entries);
  75     }
  76   }
  77 }
  78
  79 void AppRestoreService::Observe(int type,
  80                                 const content::NotificationSource& source,
  81                                 const content::NotificationDetails& details) {
  82   switch (type) {
  83     case chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING: {
  84       ExtensionHost* host = content::Details<ExtensionHost>(details).ptr();
  85       const Extension* extension = host->extension();
  86       if (extension && extension->is_platform_app())
  87         RecordAppStart(extension->id());
  88       break;
  89     }
  90
  91     case chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED: {
  92       ExtensionHost* host = content::Details<ExtensionHost>(details).ptr();
  93       const Extension* extension = host->extension();
  94       if (extension && extension->is_platform_app())
  95         RecordAppStop(extension->id());
  96       break;
  97     }
  98
  99     case chrome::NOTIFICATION_APP_TERMINATING: {
 100       // Stop listening to NOTIFICATION_EXTENSION_HOST_DESTROYED in particular
 101       // as all extension hosts will be destroyed as a result of shutdown.
 102       registrar_.RemoveAll();
 103       break;
 104     }
 105   }
 106 }
 107
 108
 109 void AppRestoreService::RecordAppStart(const std::string& extension_id) {
 110   ExtensionPrefs* extension_prefs =
 111       ExtensionSystem::Get(profile_)->extension_service()->extension_prefs();
 112   extension_prefs->SetExtensionRunning(extension_id, true);
 113 }
 114
 115 void AppRestoreService::RecordAppStop(const std::string& extension_id) {
 116   ExtensionPrefs* extension_prefs =
 117       ExtensionSystem::Get(profile_)->extension_service()->extension_prefs();
 118   extension_prefs->SetExtensionRunning(extension_id, false);
 119   extension_prefs->ClearSavedFileEntries(extension_id);
 120 }
 121
 122 void AppRestoreService::RestoreApp(
 123     const Extension* extension,
 124     const std::vector<SavedFileEntry>& file_entries) {
 125   extensions::RestartPlatformAppWithFileEntries(profile_,
 126                                                 extension,
 127                                                 file_entries);
 128 }
 129
 130 }  // namespace apps