content/renderer/fetchers/web_url_loader_client_impl.h

   1 // Copyright (c) 2011 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_RENDERER_FETCHERS_WEB_URL_LOADER_CLIENT_IMPL_H_
   6 #define CONTENT_RENDERER_FETCHERS_WEB_URL_LOADER_CLIENT_IMPL_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
  12 #include "third_party/WebKit/public/platform/WebURLResponse.h"
  13
  14 namespace blink {
  15 class WebURLLoader;
  16 struct WebURLError;
  17 }
  18
  19 namespace content {
  20
  21 class WebURLLoaderClientImpl : public blink::WebURLLoaderClient {
  22  protected:
  23   enum LoadStatus {
  24     LOADING,
  25     LOAD_FAILED,
  26     LOAD_SUCCEEDED,
  27   };
  28
  29   WebURLLoaderClientImpl();
  30   virtual ~WebURLLoaderClientImpl();
  31
  32   virtual void Cancel();
  33
  34   bool completed() const { return completed_; }
  35   const std::string& data() const { return data_; }
  36   const blink::WebURLResponse& response() const { return response_; }
  37   const std::string& metadata() const { return metadata_; }
  38   LoadStatus status() const { return status_; }
  39
  40   virtual void OnLoadComplete() = 0;
  41
  42  private:
  43   void OnLoadCompleteInternal(LoadStatus);
  44
  45   // WebWebURLLoaderClientImpl methods:
  46   virtual void didReceiveResponse(
  47       blink::WebURLLoader* loader, const blink::WebURLResponse& response);
  48   virtual void didReceiveCachedMetadata(
  49       blink::WebURLLoader* loader, const char* data, int data_length);
  50   virtual void didReceiveData(
  51       blink::WebURLLoader* loader,
  52       const char* data,
  53       int data_length,
  54       int encoded_data_length);
  55   virtual void didFinishLoading(
  56       blink::WebURLLoader* loader,
  57       double finishTime,
  58       int64_t total_encoded_data_length);
  59   virtual void didFail(
  60       blink::WebURLLoader* loader, const blink::WebURLError& error);
  61
  62  private:
  63   // Set to true once the request is complete.
  64   bool completed_;
  65
  66   // Buffer to hold the content from the server.
  67   std::string data_;
  68
  69   // A copy of the original resource response.
  70   blink::WebURLResponse response_;
  71
  72   // Buffer to hold metadata from the cache.
  73   std::string metadata_;
  74
  75   LoadStatus status_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(WebURLLoaderClientImpl);
  78 };
  79
  80 }  // namespace content
  81
  82 #endif  // CONTENT_RENDERER_FETCHERS_WEB_URL_LOADER_CLIENT_IMPL_H_