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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 #include "chrome/browser/favicon/favicon_downloader.h" | |
6 | |
7 #include "base/bind.h" | |
8 #include "chrome/browser/favicon/favicon_tab_helper.h" | |
9 #include "content/public/browser/web_contents.h" | |
10 #include "content/public/common/favicon_url.h" | |
11 #include "third_party/skia/include/core/SkBitmap.h" | |
pkotwicz
2013/12/03 19:06:49
You should include "ui/gfx/size.h"
calamity
2013/12/04 05:31:48
Done.
| |
12 | |
13 FaviconDownloader::FaviconDownloader(content::WebContents* web_contents, | |
14 std::vector<GURL> extra_favicon_urls, | |
15 FaviconDownloaderCallback callback) | |
16 : content::WebContentsObserver(web_contents), | |
17 favicon_url_candidates_(NULL), | |
18 extra_favicon_urls_(extra_favicon_urls), | |
19 callback_(callback), | |
20 weak_ptr_factory_(this) { | |
21 } | |
22 | |
23 FaviconDownloader::~FaviconDownloader() { | |
24 } | |
25 | |
26 void FaviconDownloader::Start() { | |
pkotwicz
2013/12/03 19:06:49
If |extra_favicon_urls_| is non empty, you can sta
calamity
2013/12/04 05:31:48
Done.
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27 PopulateFaviconURLsFromWebContents(); | |
28 // If the candidates aren't loaded, icons will be fetched when | |
29 // DidUpdateFaviconURL() is called. | |
30 if (favicon_url_candidates_) | |
31 FetchIcons(); | |
32 } | |
33 | |
34 int FaviconDownloader::DownloadImage(const GURL& url) { | |
35 return web_contents()->DownloadImage( | |
36 url, | |
37 true, // is_favicon | |
38 0, // no max size | |
39 base::Bind(&FaviconDownloader::DidDownloadFavicon, | |
40 weak_ptr_factory_.GetWeakPtr())); | |
41 } | |
42 | |
43 void FaviconDownloader::PopulateFaviconURLsFromWebContents() { | |
44 FaviconTabHelper* favicon_tab_helper = | |
45 web_contents() ? FaviconTabHelper::FromWebContents(web_contents()) : NULL; | |
46 favicon_url_candidates_ = | |
47 favicon_tab_helper ? favicon_tab_helper->GetFaviconURLs() : NULL; | |
48 } | |
49 | |
50 void FaviconDownloader::FetchIcons() { | |
51 // Ensure we only download each URL once. | |
52 std::set<GURL> favicon_urls; | |
53 for (std::vector<content::FaviconURL>::const_iterator it = | |
54 favicon_url_candidates_->begin(); | |
55 it != favicon_url_candidates_->end(); ++it) { | |
56 if (it->icon_type != content::FaviconURL::INVALID_ICON) | |
57 favicon_urls.insert(it->icon_url); | |
58 } | |
59 | |
60 for (std::vector<GURL>::const_iterator it = extra_favicon_urls_.begin(); | |
61 it != extra_favicon_urls_.end(); ++it) | |
62 favicon_urls.insert(*it); | |
63 | |
64 // Download icons and put their ids into |in_progress_requests_|. | |
65 for (std::set<GURL>::const_iterator it = favicon_urls.begin(); | |
66 it != favicon_urls.end(); ++it) | |
67 in_progress_requests_.insert(DownloadImage(*it)); | |
68 | |
69 // If no downloads were initiated, we can proceed directly to running the | |
70 // callback. | |
71 if (in_progress_requests_.empty()) | |
72 callback_.Run(true, favicon_map_); | |
73 } | |
74 | |
75 void FaviconDownloader::DidDownloadFavicon( | |
76 int id, | |
77 int http_status_code, | |
78 const GURL& image_url, | |
79 const std::vector<SkBitmap>& bitmaps, | |
80 const std::vector<gfx::Size>& original_bitmap_sizes) { | |
81 // Request canceled by DidNavigateMainFrame(). | |
pkotwicz
2013/12/03 19:06:49
How about: "Request may have been canceled by DidN
calamity
2013/12/04 05:31:48
Done.
| |
82 if (in_progress_requests_.erase(id) == 0) | |
83 return; | |
84 | |
85 favicon_map_[image_url] = bitmaps; | |
86 | |
87 // Once all requests have been resolved, perform post-download tasks. | |
88 if (in_progress_requests_.empty()) | |
89 callback_.Run(true, favicon_map_); | |
90 } | |
91 | |
92 // content::WebContentsObserver overrides: | |
93 void FaviconDownloader::DidNavigateMainFrame( | |
94 const content::LoadCommittedDetails& details, | |
95 const content::FrameNavigateParams& params) { | |
96 // Clear all pending requests. | |
97 in_progress_requests_.clear(); | |
98 favicon_map_.clear(); | |
99 callback_.Run(false, favicon_map_); | |
100 } | |
101 | |
102 void FaviconDownloader::DidUpdateFaviconURL( | |
103 int32 page_id, | |
104 const std::vector<content::FaviconURL>& candidates) { | |
105 // Only consider the first candidates we are given. This prevents pages that | |
106 // change their favicon from spamming us. | |
107 if (favicon_url_candidates_) | |
108 return; | |
109 | |
110 favicon_url_candidates_ = &candidates; | |
pkotwicz
2013/12/03 19:06:49
You need to make a copy here. |candidates| does no
calamity
2013/12/04 05:31:48
Done.
| |
111 FetchIcons(); | |
112 } | |
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