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// Copyright (c) 2012 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.
//
// Interface to the sync notifier, which is an object that receives
// notifications when updates are available for a set of sync types.
// All the observers are notified when such an event happens.
#ifndef SYNC_NOTIFIER_SYNC_NOTIFIER_H_
#define SYNC_NOTIFIER_SYNC_NOTIFIER_H_
#include <string>
#include "sync/internal_api/public/base/model_type.h"
#include "sync/notifier/invalidation_util.h"
namespace syncer {
class SyncNotifierObserver;
class SyncNotifier {
public:
SyncNotifier() {}
virtual ~SyncNotifier() {}
// Updates the set of ObjectIds associated with a given |handler|.
// Passing an empty ObjectIdSet will unregister |handler|.
// There should be at most one handler registered per object id.
virtual void UpdateRegisteredIds(SyncNotifierObserver* handler,
const ObjectIdSet& ids) = 0;
// SetUniqueId must be called once, before any call to
// UpdateCredentials. |unique_id| should be a non-empty globally
// unique string.
virtual void SetUniqueId(const std::string& unique_id) = 0;
// SetState must be called once, before any call to
// UpdateCredentials. |state| may be empty.
// Deprecated in favour of InvalidationStateTracker persistence.
virtual void SetStateDeprecated(const std::string& state) = 0;
// The observers won't be notified of any notifications until
// UpdateCredentials is called at least once. It can be called more than
// once.
virtual void UpdateCredentials(
const std::string& email, const std::string& token) = 0;
// This is here only to support the old p2p notification implementation,
// which is still used by sync integration tests.
// TODO(akalin): Remove this once we move the integration tests off p2p
// notifications.
virtual void SendNotification(ModelTypeSet changed_types) = 0;
};
} // namespace syncer
#endif // SYNC_NOTIFIER_SYNC_NOTIFIER_H_
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