components/sync_user_events/user_event_model_type_controller.cc

// Copyright 2018 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 "components/sync_user_events/user_event_model_type_controller.h"

#include <utility>

#include "base/bind.h"
#include "components/sync/driver/sync_auth_util.h"
#include "components/sync/driver/sync_service.h"
#include "components/sync/driver/sync_user_settings.h"
#include "google_apis/gaia/google_service_auth_error.h"

namespace syncer {

UserEventModelTypeController::UserEventModelTypeController(
    SyncService* sync_service,
    std::unique_ptr<ModelTypeControllerDelegate> delegate_for_full_sync_mode)
    : ModelTypeController(syncer::USER_EVENTS,
                          std::move(delegate_for_full_sync_mode)),
      sync_service_(sync_service) {
  DCHECK(sync_service_);
  sync_service_->AddObserver(this);
}

UserEventModelTypeController::~UserEventModelTypeController() {
  sync_service_->RemoveObserver(this);
}

void UserEventModelTypeController::Stop(syncer::ShutdownReason shutdown_reason,
                                        StopCallback callback) {
  DCHECK(CalledOnValidThread());
  switch (shutdown_reason) {
    case syncer::STOP_SYNC:
      // Special case: For USER_EVENT, we want to clear all data even when Sync
      // is stopped temporarily.
      shutdown_reason = syncer::DISABLE_SYNC;
      break;
    case syncer::DISABLE_SYNC:
    case syncer::BROWSER_SHUTDOWN:
      break;
  }
  ModelTypeController::Stop(shutdown_reason, std::move(callback));
}

DataTypeController::PreconditionState
UserEventModelTypeController::GetPreconditionState() const {
  if (sync_service_->GetUserSettings()->IsUsingSecondaryPassphrase()) {
    return PreconditionState::kMustStopAndClearData;
  }
  // TODO(crbug.com/938819): Remove the syncer::IsWebSignout() check once we
  // stop sync in this state. Also remove the "+google_apis/gaia" include
  // dependency and the "//google_apis" build dependency of sync_user_events.
  if (syncer::IsWebSignout(sync_service_->GetAuthError())) {
    return PreconditionState::kMustStopAndClearData;
  }
  return PreconditionState::kPreconditionsMet;
}

void UserEventModelTypeController::OnStateChanged(syncer::SyncService* sync) {
  sync->DataTypePreconditionChanged(type());
}

}  // namespace syncer