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 content {
  13
  14 // A ResourceHandler that simply delegates all calls to a next handler.  This
  15 // class is intended to be subclassed.
  16 class CONTENT_EXPORT LayeredResourceHandler : public ResourceHandler {
  17  public:
  18   explicit LayeredResourceHandler(scoped_ptr<ResourceHandler> next_handler);
  19   virtual ~LayeredResourceHandler();
  20
  21   // ResourceHandler implementation:
  22   virtual void SetController(ResourceController* controller) OVERRIDE;
  23   virtual bool OnUploadProgress(int request_id, uint64 position,
  24                                 uint64 size) OVERRIDE;
  25   virtual bool OnRequestRedirected(int request_id, const GURL& url,
  26                                    ResourceResponse* response,
  27                                    bool* defer) OVERRIDE;
  28   virtual bool OnResponseStarted(int request_id,
  29                                  ResourceResponse* response,
  30                                  bool* defer) OVERRIDE;
  31   virtual bool OnWillStart(int request_id, const GURL& url,
  32                            bool* defer) OVERRIDE;
  33   virtual bool OnWillRead(int request_id, net::IOBuffer** buf, int* buf_size,
  34                           int min_size) OVERRIDE;
  35   virtual bool OnReadCompleted(int request_id, int bytes_read,
  36                                bool* defer) OVERRIDE;
  37   virtual bool OnResponseCompleted(int request_id,
  38                                    const net::URLRequestStatus& status,
  39                                    const std::string& security_info) OVERRIDE;
  40   virtual void OnDataDownloaded(int request_id, int bytes_downloaded) OVERRIDE;
  41
  42   scoped_ptr<ResourceHandler> next_handler_;
  43 };
  44
  45 }  // namespace content
  46
  47 #endif  // CONTENT_BROWSER_LOADER_LAYERED_RESOURCE_HANDLER_H_