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