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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/extensions/chrome_process_manager_delegate.h"
#include "base/command_line.h"
#include "base/logging.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/common/chrome_switches.h"
#include "content/public/browser/notification_service.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/process_manager.h"
#include "extensions/browser/process_manager_factory.h"
#include "extensions/common/one_shot_event.h"
namespace extensions {
ChromeProcessManagerDelegate::ChromeProcessManagerDelegate() {
registrar_.Add(this,
chrome::NOTIFICATION_BROWSER_WINDOW_READY,
content::NotificationService::AllSources());
registrar_.Add(this,
chrome::NOTIFICATION_PROFILE_CREATED,
content::NotificationService::AllSources());
registrar_.Add(this,
chrome::NOTIFICATION_PROFILE_DESTROYED,
content::NotificationService::AllSources());
}
ChromeProcessManagerDelegate::~ChromeProcessManagerDelegate() {
}
bool ChromeProcessManagerDelegate::IsBackgroundPageAllowed(
content::BrowserContext* context) const {
Profile* profile = static_cast<Profile*>(context);
// Disallow if the current session is a Guest mode session but the current
// browser context is *not* off-the-record. Such context is artificial and
// background page shouldn't be created in it.
// http://crbug.com/329498
return !(profile->IsGuestSession() && !profile->IsOffTheRecord());
}
bool ChromeProcessManagerDelegate::DeferCreatingStartupBackgroundHosts(
content::BrowserContext* context) const {
Profile* profile = static_cast<Profile*>(context);
// The profile may not be valid yet if it is still being initialized.
// In that case, defer loading, since it depends on an initialized profile.
// Background hosts will be loaded later via NOTIFICATION_PROFILE_CREATED.
// http://crbug.com/222473
if (!g_browser_process->profile_manager()->IsValidProfile(profile))
return true;
// There are no browser windows open and the browser process was
// started to show the app launcher. Background hosts will be loaded later
// via NOTIFICATION_BROWSER_WINDOW_READY. http://crbug.com/178260
return chrome::GetTotalBrowserCountForProfile(profile) == 0 &&
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kShowAppList);
}
void ChromeProcessManagerDelegate::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
switch (type) {
case chrome::NOTIFICATION_BROWSER_WINDOW_READY: {
Browser* browser = content::Source<Browser>(source).ptr();
OnBrowserWindowReady(browser);
break;
}
case chrome::NOTIFICATION_PROFILE_CREATED: {
Profile* profile = content::Source<Profile>(source).ptr();
OnProfileCreated(profile);
break;
}
case chrome::NOTIFICATION_PROFILE_DESTROYED: {
Profile* profile = content::Source<Profile>(source).ptr();
OnProfileDestroyed(profile);
break;
}
default:
NOTREACHED();
}
}
void ChromeProcessManagerDelegate::OnBrowserWindowReady(Browser* browser) {
Profile* profile = browser->profile();
DCHECK(profile);
// If the extension system isn't ready yet the background hosts will be
// created automatically when it is.
ExtensionSystem* system = ExtensionSystem::Get(profile);
if (!system->ready().is_signaled())
return;
// Inform the process manager for this profile that the window is ready.
// We continue to observe the notification in case browser windows open for
// a related incognito profile or other regular profiles.
ProcessManager* manager = ProcessManager::Get(profile);
DCHECK(manager);
DCHECK_EQ(profile, manager->GetBrowserContext());
manager->MaybeCreateStartupBackgroundHosts();
// For incognito profiles also inform the original profile's process manager
// that the window is ready. This will usually be a no-op because the
// original profile's process manager should have been informed when the
// non-incognito window opened.
if (profile->IsOffTheRecord()) {
Profile* original_profile = profile->GetOriginalProfile();
ProcessManager* original_manager = ProcessManager::Get(original_profile);
DCHECK(original_manager);
DCHECK_EQ(original_profile, original_manager->GetBrowserContext());
original_manager->MaybeCreateStartupBackgroundHosts();
}
}
void ChromeProcessManagerDelegate::OnProfileCreated(Profile* profile) {
// Incognito profiles are handled by their original profile.
if (profile->IsOffTheRecord())
return;
// The profile can be created before the extension system is ready.
if (!ExtensionSystem::Get(profile)->ready().is_signaled())
return;
// The profile might have been initialized asynchronously (in parallel with
// extension system startup). Now that initialization is complete the
// ProcessManager can load deferred background pages.
ProcessManager::Get(profile)->MaybeCreateStartupBackgroundHosts();
}
void ChromeProcessManagerDelegate::OnProfileDestroyed(Profile* profile) {
// Close background hosts when the last profile is closed so that they
// have time to shutdown various objects on different threads. The
// ProfileManager destructor is called too late in the shutdown sequence.
// http://crbug.com/15708
ProcessManager* manager =
ProcessManagerFactory::GetForBrowserContextIfExists(profile);
if (manager) {
manager->CloseBackgroundHosts();
}
// If this profile owns an incognito profile, but it is destroyed before the
// incognito profile is destroyed, then close the incognito background hosts
// as well. This happens in a few tests. http://crbug.com/138843
if (!profile->IsOffTheRecord() && profile->HasOffTheRecordProfile()) {
ProcessManager* incognito_manager =
ProcessManagerFactory::GetForBrowserContextIfExists(
profile->GetOffTheRecordProfile());
if (incognito_manager) {
incognito_manager->CloseBackgroundHosts();
}
}
}
} // namespace extensions
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