text: // Copyright (c) 2012 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/bookmarks/bookmark_model_factory.h"
  
  #include "base/command_line.h"
  #include "base/deferred_sequenced_task_runner.h"
  #include "base/memory/singleton.h"
  #include "base/prefs/pref_service.h"
  #include "base/values.h"
  #include "chrome/browser/bookmarks/chrome_bookmark_client.h"
  #include "chrome/browser/bookmarks/chrome_bookmark_client_factory.h"
  #include "chrome/browser/profiles/incognito_helpers.h"
  #include "chrome/browser/profiles/profile.h"
  #include "chrome/browser/profiles/startup_task_runner_service.h"
  #include "chrome/browser/profiles/startup_task_runner_service_factory.h"
  #include "chrome/browser/undo/bookmark_undo_service.h"
  #include "chrome/browser/undo/bookmark_undo_service_factory.h"
  #include "chrome/common/chrome_switches.h"
  #include "chrome/common/pref_names.h"
  #include "components/bookmarks/browser/bookmark_model.h"
  #include "components/bookmarks/common/bookmark_pref_names.h"
  #include "components/keyed_service/content/browser_context_dependency_manager.h"
  #include "components/pref_registry/pref_registry_syncable.h"
  #include "content/public/browser/browser_thread.h"
  
  // static
  BookmarkModel* BookmarkModelFactory::GetForProfile(Profile* profile) {
    return static_cast<BookmarkModel*>(
        GetInstance()->GetServiceForBrowserContext(profile, true));
  }
  
  // static
  BookmarkModel* BookmarkModelFactory::GetForProfileIfExists(Profile* profile) {
    return static_cast<BookmarkModel*>(
        GetInstance()->GetServiceForBrowserContext(profile, false));
  }
  
  // static
  BookmarkModelFactory* BookmarkModelFactory::GetInstance() {
    return Singleton<BookmarkModelFactory>::get();
  }
  
  BookmarkModelFactory::BookmarkModelFactory()
      : BrowserContextKeyedServiceFactory(
          "BookmarkModel",
          BrowserContextDependencyManager::GetInstance()) {
    DependsOn(ChromeBookmarkClientFactory::GetInstance());
    DependsOn(StartupTaskRunnerServiceFactory::GetInstance());
  }
  
  BookmarkModelFactory::~BookmarkModelFactory() {
  }
  
  KeyedService* BookmarkModelFactory::BuildServiceInstanceFor(
      content::BrowserContext* context) const {
    Profile* profile = static_cast<Profile*>(context);
    ChromeBookmarkClient* bookmark_client =
        ChromeBookmarkClientFactory::GetForProfile(profile);
    BookmarkModel* bookmark_model = new BookmarkModel(bookmark_client);
    bookmark_client->Init(bookmark_model);
    bookmark_model->Load(profile->GetPrefs(),
                         profile->GetPrefs()->GetString(prefs::kAcceptLanguages),
                         profile->GetPath(),
                         StartupTaskRunnerServiceFactory::GetForProfile(profile)
                             ->GetBookmarkTaskRunner(),
                         content::BrowserThread::GetMessageLoopProxyForThread(
                             content::BrowserThread::UI));
    bool register_bookmark_undo_service_as_observer = true;
  #if !defined(OS_IOS) && !defined(OS_ANDROID)
    register_bookmark_undo_service_as_observer =
        CommandLine::ForCurrentProcess()->HasSwitch(
            switches::kEnableBookmarkUndo);
  #endif  // !defined(OS_IOS)
    if (register_bookmark_undo_service_as_observer) {
      bookmark_model->AddObserver(
          BookmarkUndoServiceFactory::GetForProfile(profile));
    }
    return bookmark_model;
  }
  
  void BookmarkModelFactory::RegisterProfilePrefs(
      user_prefs::PrefRegistrySyncable* registry) {
    // Don't sync this, as otherwise, due to a limitation in sync, it
    // will cause a deadlock (see http://crbug.com/97955).  If we truly
    // want to sync the expanded state of folders, it should be part of
    // bookmark sync itself (i.e., a property of the sync folder nodes).
    registry->RegisterListPref(bookmarks::prefs::kBookmarkEditorExpandedNodes,
                               new base::ListValue,
                               user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
    registry->RegisterListPref(
        bookmarks::prefs::kManagedBookmarks,
        user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
  }
  
  content::BrowserContext* BookmarkModelFactory::GetBrowserContextToUse(
      content::BrowserContext* context) const {
    return chrome::GetBrowserContextRedirectedInIncognito(context);
  }
  
  bool BookmarkModelFactory::ServiceIsNULLWhileTesting() const {
    return true;
  }
  