content/browser/loader/layered_resource_handler.h

   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_BROWSER_LOADER_LAYERED_RESOURCE_HANDLER_H_
   6 #define CONTENT_BROWSER_LOADER_LAYERED_RESOURCE_HANDLER_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "content/browser/loader/resource_handler.h"
  10 #include "content/common/content_export.h"
  11
  12 namespace net {
  13 class URLRequest;
  14 }  // namespace net
  15
  16 namespace content {
  17
  18 // A ResourceHandler that simply delegates all calls to a next handler.  This
  19 // class is intended to be subclassed.
  20 class CONTENT_EXPORT LayeredResourceHandler : public ResourceHandler {
  21  public:
  22   LayeredResourceHandler(net::URLRequest* request,
  23                          scoped_ptr<ResourceHandler> next_handler);
  24   ~LayeredResourceHandler() override;
  25
  26   // ResourceHandler implementation:
  27   void SetController(ResourceController* controller) override;
  28   bool OnRequestRedirected(const net::RedirectInfo& redirect_info,
  29                            ResourceResponse* response,
  30                            bool* defer) override;
  31   bool OnResponseStarted(ResourceResponse* response, bool* defer) override;
  32   bool OnWillStart(const GURL& url, bool* defer) override;
  33   bool OnBeforeNetworkStart(const GURL& url, bool* defer) override;
  34   bool OnWillRead(scoped_refptr<net::IOBuffer>* buf,
  35                   int* buf_size,
  36                   int min_size) override;
  37   bool OnReadCompleted(int bytes_read, bool* defer) override;
  38   void OnResponseCompleted(const net::URLRequestStatus& status,
  39                            const std::string& security_info,
  40                            bool* defer) override;
  41   void OnDataDownloaded(int bytes_downloaded) override;
  42
  43   scoped_ptr<ResourceHandler> next_handler_;
  44 };
  45
  46 }  // namespace content
  47
  48 #endif  // CONTENT_BROWSER_LOADER_LAYERED_RESOURCE_HANDLER_H_