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      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/glue/history_delete_directives_data_type_controller.h"
      6 
      7 #include "chrome/browser/sync/glue/chrome_report_unrecoverable_error.h"
      8 #include "chrome/browser/sync/profile_sync_service.h"
      9 #include "content/public/browser/browser_thread.h"
     10 
     11 using content::BrowserThread;
     12 
     13 namespace browser_sync {
     14 
     15 HistoryDeleteDirectivesDataTypeController::
     16     HistoryDeleteDirectivesDataTypeController(
     17         sync_driver::SyncApiComponentFactory* factory,
     18         ProfileSyncService* sync_service)
     19     : sync_driver::UIDataTypeController(
     20           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
     21           base::Bind(&ChromeReportUnrecoverableError),
     22           syncer::HISTORY_DELETE_DIRECTIVES,
     23           factory),
     24       sync_service_(sync_service) {
     25 }
     26 
     27 HistoryDeleteDirectivesDataTypeController::
     28     ~HistoryDeleteDirectivesDataTypeController() {
     29 }
     30 
     31 bool HistoryDeleteDirectivesDataTypeController::ReadyForStart() const {
     32   return !sync_service_->EncryptEverythingEnabled();
     33 }
     34 
     35 bool HistoryDeleteDirectivesDataTypeController::StartModels() {
     36   if (DisableTypeIfNecessary())
     37     return false;
     38   sync_service_->AddObserver(this);
     39   return true;
     40 }
     41 
     42 void HistoryDeleteDirectivesDataTypeController::StopModels() {
     43   if (sync_service_->HasObserver(this))
     44     sync_service_->RemoveObserver(this);
     45 }
     46 
     47 void HistoryDeleteDirectivesDataTypeController::OnStateChanged() {
     48   DisableTypeIfNecessary();
     49 }
     50 
     51 bool HistoryDeleteDirectivesDataTypeController::DisableTypeIfNecessary() {
     52   if (!sync_service_->ShouldPushChanges())
     53     return false;
     54 
     55   if (ReadyForStart())
     56     return false;
     57 
     58   if (sync_service_->HasObserver(this))
     59     sync_service_->RemoveObserver(this);
     60   syncer::SyncError error(
     61       FROM_HERE,
     62       syncer::SyncError::DATATYPE_POLICY_ERROR,
     63       "Delete directives not supported with encryption.",
     64       type());
     65   OnSingleDataTypeUnrecoverableError(error);
     66   return true;
     67 }
     68 
     69 }  // namespace browser_sync
     70