Home | History | Annotate | Download | only in renderer 
      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