| // 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. |
| |
| #ifndef CONTENT_PUBLIC_BROWSER_DOWNLOAD_DESTINATION_OBSERVER_H_ |
| #define CONTENT_PUBLIC_BROWSER_DOWNLOAD_DESTINATION_OBSERVER_H_ |
| |
| #include <string> |
| |
| #include "content/public/browser/download_interrupt_reasons.h" |
| |
| namespace content { |
| |
| // 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 UI thread. |
| // |
| // Note that this interface does not deal with cross-thread lifetime issues. |
| class DownloadDestinationObserver { |
| public: |
| virtual void DestinationUpdate(int64 bytes_so_far, |
| int64 bytes_per_sec, |
| const std::string& hash_state) = 0; |
| |
| virtual void DestinationError(DownloadInterruptReason reason) = 0; |
| |
| virtual void DestinationCompleted(const std::string& final_hash) = 0; |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_PUBLIC_BROWSER_DOWNLOAD_DESTINATION_OBSERVER_H_ |