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 NET_URL_REQUEST_URL_REQUEST_SIMPLE_JOB_H_
6#define NET_URL_REQUEST_URL_REQUEST_SIMPLE_JOB_H_
7
8#include <string>
9
10#include "base/memory/weak_ptr.h"
11#include "net/base/completion_callback.h"
12#include "net/base/net_export.h"
13#include "net/url_request/url_range_request_job.h"
14
15namespace net {
16
17class URLRequest;
18
19class NET_EXPORT URLRequestSimpleJob : public URLRangeRequestJob {
20 public:
21  URLRequestSimpleJob(URLRequest* request, NetworkDelegate* network_delegate);
22
23  virtual void Start() OVERRIDE;
24  virtual bool ReadRawData(IOBuffer* buf,
25                           int buf_size,
26                           int *bytes_read) OVERRIDE;
27  virtual bool GetMimeType(std::string* mime_type) const OVERRIDE;
28  virtual bool GetCharset(std::string* charset) OVERRIDE;
29
30 protected:
31  virtual ~URLRequestSimpleJob();
32
33  // Subclasses must override the way response data is determined.
34  // The return value should be:
35  //  - OK if data is obtained;
36  //  - ERR_IO_PENDING if async processing is needed to finish obtaining data.
37  //    This is the only case when |callback| should be called after
38  //    completion of the operation. In other situations |callback| should
39  //    never be called;
40  //  - any other ERR_* code to indicate an error. This code will be used
41  //    as the error code in the URLRequestStatus when the URLRequest
42  //    is finished.
43  virtual int GetData(std::string* mime_type,
44                      std::string* charset,
45                      std::string* data,
46                      const CompletionCallback& callback) const = 0;
47
48 protected:
49  void StartAsync();
50
51 private:
52  void OnGetDataCompleted(int result);
53
54  HttpByteRange byte_range_;
55  std::string mime_type_;
56  std::string charset_;
57  std::string data_;
58  int data_offset_;
59  base::WeakPtrFactory<URLRequestSimpleJob> weak_factory_;
60};
61
62}  // namespace net
63
64#endif  // NET_URL_REQUEST_URL_REQUEST_SIMPLE_JOB_H_
65