blob: d89ed92ad5d9ed41bd8e316f0cbd0a7b01d1025a [file] [log] [blame]
// Copyright (c) 2013 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 "base/compiler_specific.h"
#include "base/macros.h"
#include "components/sync/driver/sync_service_observer.h"
// SyncStartupTracker provides a centralized way for observers to detect when
// SyncService has successfully started up, or when startup has failed
// due to some kind of error. This code was originally part of SigninTracker
// but now that sync initialization is no longer a required part of signin,
// it has been broken out of that class so only those places that care about
// sync initialization depend on it.
class SyncStartupTracker : public syncer::SyncServiceObserver {
// Observer interface used to notify observers when sync has started up.
class Observer {
virtual ~Observer() {}
virtual void SyncStartupCompleted() = 0;
virtual void SyncStartupFailed() = 0;
SyncStartupTracker(syncer::SyncService* sync_service, Observer* observer);
~SyncStartupTracker() override;
enum SyncServiceState {
// Sync backend is still starting up.
// An error has been detected that prevents the sync backend from starting
// up.
// Sync startup has completed (i.e. SyncService::IsEngineInitialized()
// returns true).
// Returns the current state of the sync service.
static SyncServiceState GetSyncServiceState(
syncer::SyncService* sync_service);
// syncer::SyncServiceObserver implementation.
void OnStateChanged(syncer::SyncService* sync) override;
// Checks the current service state and notifies |observer_| if the state
// has changed. Note that it is expected that the observer will free this
// object, so callers should not reference this object after making this call.
void CheckServiceState();
// The SyncService we should track.
syncer::SyncService* sync_service_;
// Weak pointer to the observer to notify.
Observer* observer_;