distiller_url_fetcher.h revision f2477e01787aa58f445919b809d89e252beef54f 
1// Copyright 2013 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 COMPONENTS_DOM_DISTILLER_CORE_DISTILLER_URL_FETCHER_H_
6#define COMPONENTS_DOM_DISTILLER_CORE_DISTILLER_URL_FETCHER_H_
7
8#include "base/callback.h"
9#include "net/url_request/url_fetcher.h"
10#include "net/url_request/url_fetcher_delegate.h"
11#include "net/url_request/url_request_context_getter.h"
12
13namespace dom_distiller {
14
15class DistillerURLFetcher;
16
17// Class for creating a DistillerURLFetcher.
18class DistillerURLFetcherFactory {
19 public:
20  DistillerURLFetcherFactory(net::URLRequestContextGetter* context_getter);
21  virtual ~DistillerURLFetcherFactory() {}
22  virtual DistillerURLFetcher* CreateDistillerURLFetcher() const;
23
24 private:
25  net::URLRequestContextGetter* context_getter_;
26};
27
28// This class fetches a URL, and notifies the caller when the operation
29// completes or fails. If the request fails, an empty string will be returned.
30class DistillerURLFetcher : public net::URLFetcherDelegate {
31 public:
32  DistillerURLFetcher(net::URLRequestContextGetter* context_getter);
33  virtual ~DistillerURLFetcher();
34
35  // Indicates when a fetch is done.
36  typedef base::Callback<void(const std::string& data)> URLFetcherCallback;
37
38  // Fetches a |url|. Notifies when the fetch is done via |callback|.
39  virtual void FetchURL(const std::string& url,
40                        const URLFetcherCallback& callback);
41
42 protected:
43  virtual net::URLFetcher* CreateURLFetcher(
44      net::URLRequestContextGetter* context_getter,
45      const std::string& url);
46
47 private:
48  // net::URLFetcherDelegate:
49  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
50
51  scoped_ptr<net::URLFetcher> url_fetcher_;
52  URLFetcherCallback callback_;
53  net::URLRequestContextGetter* context_getter_;
54  DISALLOW_COPY_AND_ASSIGN(DistillerURLFetcher);
55};
56
57} // namespace dom_distiller
58
59#endif  // COMPONENTS_DOM_DISTILLER_CORE_DISTILLER_URL_FETCHER_H_
60