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// 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.
#ifndef CHROME_BROWSER_SYNC_SYNC_STARTUP_TRACKER_H_
#define CHROME_BROWSER_SYNC_SYNC_STARTUP_TRACKER_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "chrome/browser/sync/profile_sync_service_observer.h"
class Profile;
// SyncStartupTracker provides a centralized way for observers to detect when
// ProfileSyncService 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 ProfileSyncServiceObserver {
public:
// Observer interface used to notify observers when sync has started up.
class Observer {
public:
virtual ~Observer() {}
virtual void SyncStartupCompleted() = 0;
virtual void SyncStartupFailed() = 0;
};
SyncStartupTracker(Profile* profile, Observer* observer);
virtual ~SyncStartupTracker();
enum SyncServiceState {
// Sync backend is still starting up.
SYNC_STARTUP_PENDING,
// An error has been detected that prevents the sync backend from starting
// up.
SYNC_STARTUP_ERROR,
// Sync startup has completed (i.e. ProfileSyncService::sync_initialized()
// returns true).
SYNC_STARTUP_COMPLETE
};
// Returns the current state of the sync service.
static SyncServiceState GetSyncServiceState(Profile* profile);
// ProfileSyncServiceObserver implementation.
virtual void OnStateChanged() OVERRIDE;
private:
// 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();
// Profile whose ProfileSyncService we should track.
Profile* profile_;
// Weak pointer to the observer to notify.
Observer* observer_;
DISALLOW_COPY_AND_ASSIGN(SyncStartupTracker);
};
#endif // CHROME_BROWSER_SYNC_SYNC_STARTUP_TRACKER_H_
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