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/sync/sessions/session_data_type_controller.h" 6 7#include "base/prefs/pref_service.h" 8#include "chrome/browser/chrome_notification_types.h" 9#include "chrome/browser/profiles/profile.h" 10#include "chrome/browser/sync/glue/chrome_report_unrecoverable_error.h" 11#include "chrome/browser/sync/glue/synced_window_delegate.h" 12#include "chrome/browser/sync/sessions/synced_window_delegates_getter.h" 13#include "chrome/common/pref_names.h" 14#include "content/public/browser/browser_thread.h" 15#include "content/public/browser/notification_details.h" 16#include "content/public/browser/notification_service.h" 17#include "content/public/browser/notification_source.h" 18 19using content::BrowserThread; 20 21namespace browser_sync { 22 23SessionDataTypeController::SessionDataTypeController( 24 sync_driver::SyncApiComponentFactory* sync_factory, 25 Profile* profile, 26 SyncedWindowDelegatesGetter* synced_window_getter, 27 sync_driver::LocalDeviceInfoProvider* local_device) 28 : UIDataTypeController( 29 BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI), 30 base::Bind(&ChromeReportUnrecoverableError), 31 syncer::SESSIONS, 32 sync_factory), 33 profile_(profile), 34 synced_window_getter_(synced_window_getter), 35 local_device_(local_device), 36 waiting_on_session_restore_(false), 37 waiting_on_local_device_info_(false) { 38 DCHECK(local_device_); 39 pref_registrar_.Init(profile->GetPrefs()); 40 pref_registrar_.Add( 41 prefs::kSavingBrowserHistoryDisabled, 42 base::Bind(&SessionDataTypeController::OnSavingBrowserHistoryPrefChanged, 43 base::Unretained(this))); 44} 45 46SessionDataTypeController::~SessionDataTypeController() {} 47 48bool SessionDataTypeController::StartModels() { 49 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); 50 std::set<browser_sync::SyncedWindowDelegate*> window = 51 synced_window_getter_->GetSyncedWindowDelegates(); 52 for (std::set<browser_sync::SyncedWindowDelegate*>::const_iterator i = 53 window.begin(); i != window.end(); ++i) { 54 if ((*i)->IsSessionRestoreInProgress()) { 55 notification_registrar_.Add( 56 this, 57 chrome::NOTIFICATION_SESSION_RESTORE_COMPLETE, 58 content::Source<Profile>(profile_)); 59 waiting_on_session_restore_ = true; 60 break; 61 } 62 } 63 64 if (!local_device_->GetLocalDeviceInfo()) { 65 subscription_ = local_device_->RegisterOnInitializedCallback( 66 base::Bind(&SessionDataTypeController::OnLocalDeviceInfoInitialized, 67 this)); 68 waiting_on_local_device_info_ = true; 69 } 70 71 return !IsWaiting(); 72} 73 74void SessionDataTypeController::StopModels() { 75 notification_registrar_.RemoveAll(); 76} 77 78bool SessionDataTypeController::ReadyForStart() const { 79 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); 80 return !profile_->GetPrefs()->GetBoolean( 81 prefs::kSavingBrowserHistoryDisabled); 82} 83 84bool SessionDataTypeController::IsWaiting() { 85 return waiting_on_session_restore_ || waiting_on_local_device_info_; 86} 87 88void SessionDataTypeController::MaybeCompleteLoading() { 89 if (state_ == MODEL_STARTING && !IsWaiting()) { 90 OnModelLoaded(); 91 } 92} 93 94void SessionDataTypeController::Observe( 95 int type, 96 const content::NotificationSource& source, 97 const content::NotificationDetails& details) { 98 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); 99 DCHECK_EQ(chrome::NOTIFICATION_SESSION_RESTORE_COMPLETE, type); 100 DCHECK_EQ(profile_, content::Source<Profile>(source).ptr()); 101 notification_registrar_.RemoveAll(); 102 103 waiting_on_session_restore_ = false; 104 MaybeCompleteLoading(); 105} 106 107void SessionDataTypeController::OnLocalDeviceInfoInitialized() { 108 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); 109 subscription_.reset(); 110 111 waiting_on_local_device_info_ = false; 112 MaybeCompleteLoading(); 113} 114 115void SessionDataTypeController::OnSavingBrowserHistoryPrefChanged() { 116 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); 117 if (profile_->GetPrefs()->GetBoolean(prefs::kSavingBrowserHistoryDisabled)) { 118 // If history and tabs persistence is turned off then generate an 119 // unrecoverable error. SESSIONS won't be a registered type on the next 120 // Chrome restart. 121 if (state() != NOT_RUNNING && state() != STOPPING) { 122 syncer::SyncError error( 123 FROM_HERE, 124 syncer::SyncError::DATATYPE_POLICY_ERROR, 125 "History and tab saving is now disabled by policy.", 126 syncer::SESSIONS); 127 OnSingleDataTypeUnrecoverableError(error); 128 } 129 } 130} 131 132} // namespace browser_sync 133