1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_PUBLIC_BROWSER_DOWNLOAD_DESTINATION_OBSERVER_H_ 6 #define CONTENT_PUBLIC_BROWSER_DOWNLOAD_DESTINATION_OBSERVER_H_ 7 8 #include <string> 9 10 #include "content/public/browser/download_interrupt_reasons.h" 11 12 namespace content { 13 14 // Class that receives asynchronous events from a DownloadDestination about 15 // downloading progress and completion. These should report status when the 16 // data arrives at its final location; i.e. DestinationUpdate should be 17 // called after the destination is finished with whatever operation it 18 // is doing on the data described by |bytes_so_far| and DestinationCompleted 19 // should only be called once that is true for all data. 20 // 21 // All methods are invoked on the UI thread. 22 // 23 // Note that this interface does not deal with cross-thread lifetime issues. 24 class DownloadDestinationObserver { 25 public: 26 virtual void DestinationUpdate(int64 bytes_so_far, 27 int64 bytes_per_sec, 28 const std::string& hash_state) = 0; 29 30 virtual void DestinationError(DownloadInterruptReason reason) = 0; 31 32 virtual void DestinationCompleted(const std::string& final_hash) = 0; 33 }; 34 35 } // namespace content 36 37 #endif // CONTENT_PUBLIC_BROWSER_DOWNLOAD_DESTINATION_OBSERVER_H_ 38