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// 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_INTERNAL_API_PUBLIC_BASE_ACK_HANDLE_H
#define SYNC_INTERNAL_API_PUBLIC_BASE_ACK_HANDLE_H
#include <string>
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "sync/base/sync_export.h"
namespace base {
class DictionaryValue;
}
namespace syncer {
// Opaque class that represents a local ack handle. We don't reuse the
// invalidation ack handles to avoid unnecessary dependencies.
class SYNC_EXPORT AckHandle {
public:
static AckHandle CreateUnique();
static AckHandle InvalidAckHandle();
bool Equals(const AckHandle& other) const;
scoped_ptr<base::DictionaryValue> ToValue() const;
bool ResetFromValue(const base::DictionaryValue& value);
bool IsValid() const;
~AckHandle();
private:
// Explicitly copyable and assignable for STL containers.
AckHandle(const std::string& state, base::Time timestamp);
std::string state_;
base::Time timestamp_;
};
} // namespace syncer
#endif // SYNC_INTERNAL_API_PUBLIC_BASE_ACK_HANDLE_H
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