1// Copyright (c) 2011 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 WEBKIT_GLUE_IMAGE_RESOURCE_FETCHER_H_
6#define WEBKIT_GLUE_IMAGE_RESOURCE_FETCHER_H_
7
8#include "base/basictypes.h"
9#include "base/callback.h"
10#include "webkit/glue/resource_fetcher.h"
11
12class SkBitmap;
13
14namespace webkit_glue {
15
16// ImageResourceFetcher handles downloading an image for a webview. Once
17// downloading is done the supplied callback is notified. ImageResourceFetcher
18// is used to download the favicon and images for web apps.
19class ImageResourceFetcher {
20 public:
21  typedef Callback2<ImageResourceFetcher*, const SkBitmap&>::Type Callback;
22
23  ImageResourceFetcher(const GURL& image_url,
24                       WebKit::WebFrame* frame,
25                       int id,
26                       int image_size,
27                       WebKit::WebURLRequest::TargetType target_type,
28                       Callback* callback);
29
30  virtual ~ImageResourceFetcher();
31
32  // URL of the image we're downloading.
33  const GURL& image_url() const { return image_url_; }
34
35  // Unique identifier for the request.
36  int id() const { return id_; }
37
38 private:
39  // ResourceFetcher::Callback. Decodes the image and invokes callback_.
40  void OnURLFetchComplete(const WebKit::WebURLResponse& response,
41                          const std::string& data);
42
43  scoped_ptr<Callback> callback_;
44
45  // Unique identifier for the request.
46  const int id_;
47
48  // URL of the image.
49  const GURL image_url_;
50
51  // The size of the image. This is only a hint that is used if the image
52  // contains multiple sizes. A value of 0 results in using the first frame
53  // of the image.
54  const int image_size_;
55
56  // Does the actual download.
57  scoped_ptr<ResourceFetcher> fetcher_;
58
59  DISALLOW_COPY_AND_ASSIGN(ImageResourceFetcher);
60};
61
62}  // namespace webkit_glue
63
64#endif  // WEBKIT_GLUE_IMAGE_RESOURCE_FETCHER_H_
65