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
12namespace net {
13class URLRequest;
14}  // namespace net
15
16namespace content {
17
18// A ResourceHandler that simply delegates all calls to a next handler.  This
19// class is intended to be subclassed.
20class 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_
52