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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_DOWNLOAD_PUBLIC_COMMON_DOWNLOAD_DESTINATION_OBSERVER_H_
#define COMPONENTS_DOWNLOAD_PUBLIC_COMMON_DOWNLOAD_DESTINATION_OBSERVER_H_
#include <stdint.h>
#include <memory>
#include "components/download/public/common/download_export.h"
#include "components/download/public/common/download_interrupt_reasons.h"
#include "components/download/public/common/download_item.h"
#include "crypto/secure_hash.h"
namespace download {
// Class that receives asynchronous events from a DownloadDestination about
// downloading progress and completion. These should report status when the
// data arrives at its final location; i.e. DestinationUpdate should be
// called after the destination is finished with whatever operation it
// is doing on the data described by |bytes_so_far| and DestinationCompleted
// should only be called once that is true for all data.
//
// All methods are invoked on the same thread the observer was created.
//
// Note that this interface does not deal with cross-thread lifetime issues.
class COMPONENTS_DOWNLOAD_EXPORT DownloadDestinationObserver {
public:
virtual ~DownloadDestinationObserver();
virtual void DestinationUpdate(
int64_t bytes_so_far,
int64_t bytes_per_sec,
const std::vector<DownloadItem::ReceivedSlice>& received_slices) = 0;
virtual void DestinationError(
DownloadInterruptReason reason,
int64_t bytes_so_far,
std::unique_ptr<crypto::SecureHash> hash_state) = 0;
virtual void DestinationCompleted(
int64_t total_bytes,
std::unique_ptr<crypto::SecureHash> hash_state) = 0;
};
} // namespace download
#endif // COMPONENTS_DOWNLOAD_PUBLIC_COMMON_DOWNLOAD_DESTINATION_OBSERVER_H_
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