1 // Copyright 2014 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 #include <string> 6 7 #include "base/callback.h" 8 #include "base/files/file.h" 9 #include "ppapi/c/private/ppb_nacl_private.h" 10 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h" 11 12 namespace blink { 13 struct WebURLError; 14 class WebURLLoader; 15 class WebURLResponse; 16 } 17 18 namespace nacl { 19 20 // Downloads a file and writes the contents to a specified file open for 21 // writing. 22 class FileDownloader : public blink::WebURLLoaderClient { 23 public: 24 enum Status { 25 SUCCESS, 26 ACCESS_DENIED, 27 FAILED 28 }; 29 30 // Provides the FileDownloader status and the HTTP status code. 31 typedef base::Callback<void(Status, base::File, int)> StatusCallback; 32 33 // Provides the bytes received so far, and the total bytes expected to be 34 // received. 35 typedef base::Callback<void(int64_t, int64_t)> ProgressCallback; 36 37 FileDownloader(scoped_ptr<blink::WebURLLoader> url_loader, 38 base::File file, 39 StatusCallback status_cb, 40 ProgressCallback progress_cb); 41 42 virtual ~FileDownloader(); 43 44 void Load(const blink::WebURLRequest& request); 45 46 private: 47 // WebURLLoaderClient implementation. 48 virtual void didReceiveResponse(blink::WebURLLoader* loader, 49 const blink::WebURLResponse& response); 50 virtual void didReceiveData(blink::WebURLLoader* loader, 51 const char* data, 52 int data_length, 53 int encoded_data_length); 54 virtual void didFinishLoading(blink::WebURLLoader* loader, 55 double finish_time, 56 int64_t total_encoded_data_length); 57 virtual void didFail(blink::WebURLLoader* loader, 58 const blink::WebURLError& error); 59 60 scoped_ptr<blink::WebURLLoader> url_loader_; 61 base::File file_; 62 StatusCallback status_cb_; 63 ProgressCallback progress_cb_; 64 int http_status_code_; 65 int64_t total_bytes_received_; 66 int64_t total_bytes_to_be_received_; 67 Status status_; 68 }; 69 70 } // namespace nacl 71