chrome/browser/extensions/chrome_process_manager_delegate.cc

   1 // Copyright 2014 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 "chrome/browser/extensions/chrome_process_manager_delegate.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/logging.h"
   9 #include "chrome/browser/browser_process.h"
  10 #include "chrome/browser/chrome_notification_types.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "chrome/browser/profiles/profile_manager.h"
  13 #include "chrome/browser/ui/browser.h"
  14 #include "chrome/browser/ui/browser_finder.h"
  15 #include "chrome/common/chrome_switches.h"
  16 #include "components/user_manager/user_manager.h"
  17 #include "content/public/browser/notification_service.h"
  18 #include "extensions/browser/extension_system.h"
  19 #include "extensions/browser/process_manager.h"
  20 #include "extensions/browser/process_manager_factory.h"
  21 #include "extensions/common/one_shot_event.h"
  22
  23 namespace extensions {
  24
  25 ChromeProcessManagerDelegate::ChromeProcessManagerDelegate() {
  26   registrar_.Add(this,
  27                  chrome::NOTIFICATION_BROWSER_WINDOW_READY,
  28                  content::NotificationService::AllSources());
  29   registrar_.Add(this,
  30                  chrome::NOTIFICATION_PROFILE_CREATED,
  31                  content::NotificationService::AllSources());
  32   registrar_.Add(this,
  33                  chrome::NOTIFICATION_PROFILE_DESTROYED,
  34                  content::NotificationService::AllSources());
  35 }
  36
  37 ChromeProcessManagerDelegate::~ChromeProcessManagerDelegate() {
  38 }
  39
  40 bool ChromeProcessManagerDelegate::IsBackgroundPageAllowed(
  41     content::BrowserContext* context) const {
  42   Profile* profile = static_cast<Profile*>(context);
  43
  44   bool is_normal_session = !profile->IsGuestSession() &&
  45                            !profile->IsSystemProfile();
  46 #if defined(OS_CHROMEOS)
  47   is_normal_session = is_normal_session &&
  48                       user_manager::UserManager::Get()->IsUserLoggedIn();
  49 #endif
  50
  51   // Disallow if the current session is a Guest mode session or login screen but
  52   // the current browser context is *not* off-the-record. Such context is
  53   // artificial and background page shouldn't be created in it.
  54   // http://crbug.com/329498
  55   return is_normal_session || profile->IsOffTheRecord();
  56 }
  57
  58 bool ChromeProcessManagerDelegate::DeferCreatingStartupBackgroundHosts(
  59     content::BrowserContext* context) const {
  60   Profile* profile = static_cast<Profile*>(context);
  61
  62   // The profile may not be valid yet if it is still being initialized.
  63   // In that case, defer loading, since it depends on an initialized profile.
  64   // Background hosts will be loaded later via NOTIFICATION_PROFILE_CREATED.
  65   // http://crbug.com/222473
  66   if (!g_browser_process->profile_manager()->IsValidProfile(profile))
  67     return true;
  68
  69   // There are no browser windows open and the browser process was
  70   // started to show the app launcher. Background hosts will be loaded later
  71   // via NOTIFICATION_BROWSER_WINDOW_READY. http://crbug.com/178260
  72   return chrome::GetTotalBrowserCountForProfile(profile) == 0 &&
  73          base::CommandLine::ForCurrentProcess()->HasSwitch(
  74              switches::kShowAppList);
  75 }
  76
  77 void ChromeProcessManagerDelegate::Observe(
  78     int type,
  79     const content::NotificationSource& source,
  80     const content::NotificationDetails& details) {
  81   switch (type) {
  82     case chrome::NOTIFICATION_BROWSER_WINDOW_READY: {
  83       Browser* browser = content::Source<Browser>(source).ptr();
  84       OnBrowserWindowReady(browser);
  85       break;
  86     }
  87     case chrome::NOTIFICATION_PROFILE_CREATED: {
  88       Profile* profile = content::Source<Profile>(source).ptr();
  89       OnProfileCreated(profile);
  90       break;
  91     }
  92     case chrome::NOTIFICATION_PROFILE_DESTROYED: {
  93       Profile* profile = content::Source<Profile>(source).ptr();
  94       OnProfileDestroyed(profile);
  95       break;
  96     }
  97     default:
  98       NOTREACHED();
  99   }
 100 }
 101
 102 void ChromeProcessManagerDelegate::OnBrowserWindowReady(Browser* browser) {
 103   Profile* profile = browser->profile();
 104   DCHECK(profile);
 105
 106   // If the extension system isn't ready yet the background hosts will be
 107   // created automatically when it is.
 108   ExtensionSystem* system = ExtensionSystem::Get(profile);
 109   if (!system->ready().is_signaled())
 110     return;
 111
 112   // Inform the process manager for this profile that the window is ready.
 113   // We continue to observe the notification in case browser windows open for
 114   // a related incognito profile or other regular profiles.
 115   ProcessManager* manager = ProcessManager::Get(profile);
 116   DCHECK(manager);
 117   DCHECK_EQ(profile, manager->browser_context());
 118   manager->MaybeCreateStartupBackgroundHosts();
 119
 120   // For incognito profiles also inform the original profile's process manager
 121   // that the window is ready. This will usually be a no-op because the
 122   // original profile's process manager should have been informed when the
 123   // non-incognito window opened.
 124   if (profile->IsOffTheRecord()) {
 125     Profile* original_profile = profile->GetOriginalProfile();
 126     ProcessManager* original_manager = ProcessManager::Get(original_profile);
 127     DCHECK(original_manager);
 128     DCHECK_EQ(original_profile, original_manager->browser_context());
 129     original_manager->MaybeCreateStartupBackgroundHosts();
 130   }
 131 }
 132
 133 void ChromeProcessManagerDelegate::OnProfileCreated(Profile* profile) {
 134   // Incognito profiles are handled by their original profile.
 135   if (profile->IsOffTheRecord())
 136     return;
 137
 138   // The profile can be created before the extension system is ready.
 139   if (!ExtensionSystem::Get(profile)->ready().is_signaled())
 140     return;
 141
 142   // The profile might have been initialized asynchronously (in parallel with
 143   // extension system startup). Now that initialization is complete the
 144   // ProcessManager can load deferred background pages.
 145   ProcessManager::Get(profile)->MaybeCreateStartupBackgroundHosts();
 146 }
 147
 148 void ChromeProcessManagerDelegate::OnProfileDestroyed(Profile* profile) {
 149   // Close background hosts when the last profile is closed so that they
 150   // have time to shutdown various objects on different threads. The
 151   // ProfileManager destructor is called too late in the shutdown sequence.
 152   // http://crbug.com/15708
 153   ProcessManager* manager =
 154       ProcessManagerFactory::GetForBrowserContextIfExists(profile);
 155   if (manager) {
 156     manager->CloseBackgroundHosts();
 157   }
 158
 159   // If this profile owns an incognito profile, but it is destroyed before the
 160   // incognito profile is destroyed, then close the incognito background hosts
 161   // as well. This happens in a few tests. http://crbug.com/138843
 162   if (!profile->IsOffTheRecord() && profile->HasOffTheRecordProfile()) {
 163     ProcessManager* incognito_manager =
 164         ProcessManagerFactory::GetForBrowserContextIfExists(
 165             profile->GetOffTheRecordProfile());
 166     if (incognito_manager) {
 167       incognito_manager->CloseBackgroundHosts();
 168     }
 169   }
 170 }
 171
 172 }  // namespace extensions