| // Copyright 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 SYNC_NOTIFIER_ACK_HANDLER_H_ |
| #define SYNC_NOTIFIER_ACK_HANDLER_H_ |
| |
| #include <vector> |
| |
| #include "sync/base/sync_export.h" |
| |
| namespace invalidation { |
| class ObjectId; |
| } // namespace invalidation |
| |
| namespace syncer { |
| |
| class AckHandle; |
| |
| // An interface for classes that keep track of invalidation acknowledgements. |
| // |
| // We don't expect to support more than one "real" implementation of AckHandler, |
| // but this interface is very useful for testing and implementation hiding. |
| class SYNC_EXPORT AckHandler { |
| public: |
| AckHandler(); |
| virtual ~AckHandler() = 0; |
| |
| // Record the local acknowledgement of an invalidation identified by |handle|. |
| virtual void Acknowledge( |
| const invalidation::ObjectId& id, |
| const AckHandle& handle) = 0; |
| |
| // Record the drop of an invalidation identified by |handle|. |
| virtual void Drop( |
| const invalidation::ObjectId& id, |
| const AckHandle& handle) = 0; |
| }; |
| |
| } // namespace syncer |
| |
| #endif // SYNC_NOTIFIER_ACK_HANDLER_H_ |