src/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   virtual ~LayeredResourceHandler();
  25
  26   // ResourceHandler implementation:
  27   virtual void SetController(ResourceController* controller) OVERRIDE;
  28   virtual bool OnUploadProgress(int request_id, uint64 position,
  29                                 uint64 size) OVERRIDE;
  30   virtual bool OnRequestRedirected(int request_id, const GURL& url,
  31                                    ResourceResponse* response,
  32                                    bool* defer) OVERRIDE;
  33   virtual bool OnResponseStarted(int request_id,
  34                                  ResourceResponse* response,
  35                                  bool* defer) OVERRIDE;
  36   virtual bool OnWillStart(int request_id, const GURL& url,
  37                            bool* defer) OVERRIDE;
  38   virtual bool OnWillRead(int request_id,
  39                           scoped_refptr<net::IOBuffer>* buf,
  40                           int* buf_size,
  41                           int min_size) OVERRIDE;
  42   virtual bool OnReadCompleted(int request_id, int bytes_read,
  43                                bool* defer) OVERRIDE;
  44   virtual bool OnResponseCompleted(int request_id,
  45                                    const net::URLRequestStatus& status,
  46                                    const std::string& security_info) OVERRIDE;
  47   virtual void OnDataDownloaded(int request_id, int bytes_downloaded) OVERRIDE;
  48
  49   scoped_ptr<ResourceHandler> next_handler_;
  50 };
  51
  52 }  // namespace content
  53
  54 #endif  // CONTENT_BROWSER_LOADER_LAYERED_RESOURCE_HANDLER_H_