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